firmware: create and apply rustfmt policy

Co-authored-by: Egor Savkin <es@m-labs.hk>
Co-committed-by: Egor Savkin <es@m-labs.hk>

flake.nix

@@ -253,6 +253,23 @@
         '';
     };
 
+    fmt-check = pkgs.stdenv.mkDerivation {
+      name = "fmt-check";
+
+      nativeBuildInputs = [
+        rustPlatform.rust.cargo
+      ];
+
+      phases = [ "buildPhase" ];
+
+      buildPhase =
+        ''
+        cd ${self}/src
+        cargo fmt -- --check
+        touch $out
+        '';
+    };
+
     # for hitl-tests
     zc706-nist_qc2 = (build { target = "zc706"; variant = "nist_qc2"; });
     zc706-hitl-tests = pkgs.stdenv.mkDerivation {
@@ -341,7 +358,7 @@
       (build { target = "kasli_soc"; variant = "master"; json = ./kasli-soc-master.json; }) //
       (build { target = "kasli_soc"; variant = "satellite"; json = ./kasli-soc-satellite.json; });
 
-    hydraJobs = packages.x86_64-linux // { inherit zc706-hitl-tests; inherit gateware-sim; };
+    hydraJobs = packages.x86_64-linux // { inherit zc706-hitl-tests; inherit gateware-sim; inherit fmt-check; };
 
     devShell.x86_64-linux = pkgs.mkShell {
       name = "artiq-zynq-dev-shell";

src/libboard_artiq/src/drtio_routing.rs

@@ -1,9 +1,10 @@
-use libconfig::Config;
-#[cfg(has_drtio_routing)]
-use crate::pl::csr;
 use core::fmt;
 
-use log::{warn, info};
+use libconfig::Config;
+use log::{info, warn};
+
+#[cfg(has_drtio_routing)]
+use crate::pl::csr;
 
 #[cfg(has_drtio_routing)]
 pub const DEST_COUNT: usize = 256;
@@ -58,10 +59,10 @@ impl fmt::Display for RoutingTable {
 pub fn config_routing_table(default_n_links: usize, cfg: &Config) -> RoutingTable {
     let mut ret = RoutingTable::default_master(default_n_links);
     if let Ok(data) = cfg.read("routing_table") {
-        if data.len() == DEST_COUNT*MAX_HOPS {
+        if data.len() == DEST_COUNT * MAX_HOPS {
             for i in 0..DEST_COUNT {
                 for j in 0..MAX_HOPS {
-                    ret.0[i][j] = data[i*MAX_HOPS+j];
+                    ret.0[i][j] = data[i * MAX_HOPS + j];
                 }
             }
         } else {

src/libboard_artiq/src/drtioaux.rs

@@ -1,14 +1,12 @@
+use core_io::{Error as IoError, ErrorKind as IoErrorKind};
 use crc;
-
+use io::{proto::{ProtoRead, ProtoWrite},
-use core_io::{ErrorKind as IoErrorKind, Error as IoError};
+         Cursor};
-use io::{proto::ProtoRead, proto::ProtoWrite, Cursor};
+use libboard_zynq::{time::Milliseconds, timer::GlobalTimer};
-use libboard_zynq::{timer::GlobalTimer, time::Milliseconds};
 use libcortex_a9::asm::dmb;
-use crate::mem::mem::DRTIOAUX_MEM;
-use crate::pl::csr::DRTIOAUX;
-use crate::drtioaux_proto::Error as ProtocolError;
 
 pub use crate::drtioaux_proto::Packet;
+use crate::{drtioaux_proto::Error as ProtocolError, mem::mem::DRTIOAUX_MEM, pl::csr::DRTIOAUX};
 
 #[derive(Debug)]
 pub enum Error {
@@ -21,7 +19,7 @@ pub enum Error {
 
     RoutingError,
 
-    Protocol(ProtocolError)
+    Protocol(ProtocolError),
 }
 
 impl From<ProtocolError> for Error {
@@ -63,7 +61,7 @@ pub fn copy_work_buffer(src: *mut u32, dst: *mut u32, len: isize) {
     // and AXI burst reads/writes are not implemented yet in gateware
     // thus the need for a work buffer for transmitting and copying it over
     unsafe {
-        for i in 0..(len/4) {
+        for i in 0..(len / 4) {
             *dst.offset(i) = *src.offset(i);
             //data memory barrier to prevent bursts
             dmb();
@@ -72,8 +70,7 @@ pub fn copy_work_buffer(src: *mut u32, dst: *mut u32, len: isize) {
 }
 
 fn receive<F, T>(linkno: u8, f: F) -> Result<Option<T>, Error>
-    where F: FnOnce(&[u8]) -> Result<T, Error>
+where F: FnOnce(&[u8]) -> Result<T, Error> {
-{
     let linkidx = linkno as usize;
     unsafe {
         if (DRTIOAUX[linkidx].aux_rx_present_read)() == 1 {
@@ -93,12 +90,12 @@ fn receive<F, T>(linkno: u8, f: F) -> Result<Option<T>, Error>
 
 pub fn recv(linkno: u8) -> Result<Option<Packet>, Error> {
     if has_rx_error(linkno) {
-        return Err(Error::GatewareError)
+        return Err(Error::GatewareError);
     }
 
     receive(linkno, |buffer| {
         if buffer.len() < 8 {
-            return Err(IoError::new(IoErrorKind::UnexpectedEof, "Unexpected end").into())
+            return Err(IoError::new(IoErrorKind::UnexpectedEof, "Unexpected end").into());
         }
 
         let mut reader = Cursor::new(buffer);
@@ -107,7 +104,7 @@ pub fn recv(linkno: u8) -> Result<Option<Packet>, Error> {
         let checksum = crc::crc32::checksum_ieee(&reader.get_ref()[0..checksum_at]);
         reader.set_position(checksum_at);
         if reader.read_u32()? != checksum {
-            return Err(Error::CorruptedPacket)
+            return Err(Error::CorruptedPacket);
         }
         reader.set_position(0);
 
@@ -115,9 +112,7 @@ pub fn recv(linkno: u8) -> Result<Option<Packet>, Error> {
     })
 }
 
-pub fn recv_timeout(linkno: u8, timeout_ms: Option<u64>,
+pub fn recv_timeout(linkno: u8, timeout_ms: Option<u64>, timer: GlobalTimer) -> Result<Packet, Error> {
-    timer: GlobalTimer) -> Result<Packet, Error> 
-{
     let timeout_ms = Milliseconds(timeout_ms.unwrap_or(10));
     let limit = timer.get_time() + timeout_ms;
     while timer.get_time() < limit {
@@ -130,8 +125,7 @@ pub fn recv_timeout(linkno: u8, timeout_ms: Option<u64>,
 }
 
 fn transmit<F>(linkno: u8, f: F) -> Result<(), Error>
-    where F: FnOnce(&mut [u8]) -> Result<usize, Error>
+where F: FnOnce(&mut [u8]) -> Result<usize, Error> {
-{
     let linkno = linkno as usize;
     unsafe {
         while (DRTIOAUX[linkno].aux_tx_read)() != 0 {}

src/libboard_artiq/src/drtioaux_async.rs

@@ -1,18 +1,16 @@
+use core_io::{Error as IoError, ErrorKind as IoErrorKind};
 use crc;
-
+use io::{proto::{ProtoRead, ProtoWrite},
-use core_io::{ErrorKind as IoErrorKind, Error as IoError};
+         Cursor};
-use void::Void;
+use libasync::{block_async, task};
+use libboard_zynq::{time::Milliseconds, timer::GlobalTimer};
 use nb;
-
+use void::Void;
-use libboard_zynq::{timer::GlobalTimer, time::Milliseconds};
-use libasync::{task, block_async};
-
-use io::{proto::ProtoRead, proto::ProtoWrite, Cursor};
-use crate::mem::mem::DRTIOAUX_MEM;
-use crate::pl::csr::DRTIOAUX;
-use crate::drtioaux::{Error, has_rx_error, copy_work_buffer};
 
 pub use crate::drtioaux_proto::Packet;
+use crate::{drtioaux::{copy_work_buffer, has_rx_error, Error},
+            mem::mem::DRTIOAUX_MEM,
+            pl::csr::DRTIOAUX};
 
 pub async fn reset(linkno: u8) {
     let linkno = linkno as usize;
@@ -29,16 +27,14 @@ fn tx_ready(linkno: usize) -> nb::Result<(), Void> {
     unsafe {
         if (DRTIOAUX[linkno].aux_tx_read)() != 0 {
             Err(nb::Error::WouldBlock)
-        }
+        } else {
-        else {
             Ok(())
         }
     }
 }
 
 async fn receive<F, T>(linkno: u8, f: F) -> Result<Option<T>, Error>
-    where F: FnOnce(&[u8]) -> Result<T, Error>
+where F: FnOnce(&[u8]) -> Result<T, Error> {
-{
     let linkidx = linkno as usize;
     unsafe {
         if (DRTIOAUX[linkidx].aux_rx_present_read)() == 1 {
@@ -58,12 +54,12 @@ async fn receive<F, T>(linkno: u8, f: F) -> Result<Option<T>, Error>
 
 pub async fn recv(linkno: u8) -> Result<Option<Packet>, Error> {
     if has_rx_error(linkno) {
-        return Err(Error::GatewareError)
+        return Err(Error::GatewareError);
     }
 
     receive(linkno, |buffer| {
         if buffer.len() < 8 {
-            return Err(IoError::new(IoErrorKind::UnexpectedEof, "Unexpected end").into())
+            return Err(IoError::new(IoErrorKind::UnexpectedEof, "Unexpected end").into());
         }
 
         let mut reader = Cursor::new(buffer);
@@ -72,17 +68,16 @@ pub async fn recv(linkno: u8) -> Result<Option<Packet>, Error> {
         let checksum = crc::crc32::checksum_ieee(&reader.get_ref()[0..checksum_at]);
         reader.set_position(checksum_at);
         if reader.read_u32()? != checksum {
-            return Err(Error::CorruptedPacket)
+            return Err(Error::CorruptedPacket);
         }
         reader.set_position(0);
 
         Ok(Packet::read_from(&mut reader)?)
-    }).await
+    })
+    .await
 }
 
-pub async fn recv_timeout(linkno: u8, timeout_ms: Option<u64>,
+pub async fn recv_timeout(linkno: u8, timeout_ms: Option<u64>, timer: GlobalTimer) -> Result<Packet, Error> {
-    timer: GlobalTimer) -> Result<Packet, Error> 
-{
     let timeout_ms = Milliseconds(timeout_ms.unwrap_or(10));
     let limit = timer.get_time() + timeout_ms;
     let mut would_block = false;
@@ -93,7 +88,9 @@ pub async fn recv_timeout(linkno: u8, timeout_ms: Option<u64>,
             task::r#yield().await;
         }
         match recv(linkno).await? {
-            None => { would_block = true; },
+            None => {
+                would_block = true;
+            }
             Some(packet) => return Ok(packet),
         }
     }
@@ -101,8 +98,7 @@ pub async fn recv_timeout(linkno: u8, timeout_ms: Option<u64>,
 }
 
 async fn transmit<F>(linkno: u8, f: F) -> Result<(), Error>
-    where F: FnOnce(&mut [u8]) -> Result<usize, Error>
+where F: FnOnce(&mut [u8]) -> Result<usize, Error> {
-{
     let linkno = linkno as usize;
     unsafe {
         let _ = block_async!(tx_ready(linkno)).await;
@@ -134,5 +130,6 @@ pub async fn send(linkno: u8, packet: &Packet) -> Result<(), Error> {
         writer.write_u32(checksum)?;
 
         Ok(writer.position())
-    }).await
+    })
+    .await
 }

src/libboard_artiq/src/drtioaux_proto.rs

@@ -1,11 +1,10 @@
-use core_io::{Write, Read, Error as IoError};
+use core_io::{Error as IoError, Read, Write};
-
+use io::proto::{ProtoRead, ProtoWrite};
-use io::proto::{ProtoWrite, ProtoRead};
 
 #[derive(Debug)]
 pub enum Error {
     UnknownPacket(u8),
-    Io(IoError)
+    Io(IoError),
 }
 
 impl From<IoError> for Error {
@@ -22,45 +21,122 @@ pub enum Packet {
     ResetAck,
     TSCAck,
 
-    DestinationStatusRequest { destination: u8 },
+    DestinationStatusRequest {
+        destination: u8,
+    },
     DestinationDownReply,
     DestinationOkReply,
-    DestinationSequenceErrorReply { channel: u16 },
+    DestinationSequenceErrorReply {
-    DestinationCollisionReply { channel: u16 },
+        channel: u16,
-    DestinationBusyReply { channel: u16 },
+    },
+    DestinationCollisionReply {
+        channel: u16,
+    },
+    DestinationBusyReply {
+        channel: u16,
+    },
 
-    RoutingSetPath { destination: u8, hops: [u8; 32] },
+    RoutingSetPath {
-    RoutingSetRank { rank: u8 },
+        destination: u8,
+        hops: [u8; 32],
+    },
+    RoutingSetRank {
+        rank: u8,
+    },
     RoutingAck,
 
-    MonitorRequest { destination: u8, channel: u16, probe: u8 },
+    MonitorRequest {
-    MonitorReply { value: u64 },
+        destination: u8,
-    InjectionRequest { destination: u8, channel: u16, overrd: u8, value: u8 },
+        channel: u16,
-    InjectionStatusRequest { destination: u8, channel: u16, overrd: u8 },
+        probe: u8,
-    InjectionStatusReply { value: u8 },
+    },
+    MonitorReply {
+        value: u64,
+    },
+    InjectionRequest {
+        destination: u8,
+        channel: u16,
+        overrd: u8,
+        value: u8,
+    },
+    InjectionStatusRequest {
+        destination: u8,
+        channel: u16,
+        overrd: u8,
+    },
+    InjectionStatusReply {
+        value: u8,
+    },
 
-    I2cStartRequest { destination: u8, busno: u8 },
+    I2cStartRequest {
-    I2cRestartRequest { destination: u8, busno: u8 },
+        destination: u8,
-    I2cStopRequest { destination: u8, busno: u8 },
+        busno: u8,
-    I2cWriteRequest { destination: u8, busno: u8, data: u8 },
+    },
-    I2cWriteReply { succeeded: bool, ack: bool },
+    I2cRestartRequest {
-    I2cReadRequest { destination: u8, busno: u8, ack: bool },
+        destination: u8,
-    I2cReadReply { succeeded: bool, data: u8 },
+        busno: u8,
-    I2cBasicReply { succeeded: bool },
+    },
-    I2cSwitchSelectRequest { destination: u8, busno: u8, address: u8, mask: u8 },
+    I2cStopRequest {
-
+        destination: u8,
-    SpiSetConfigRequest { destination: u8, busno: u8, flags: u8, length: u8, div: u8, cs: u8 },
+        busno: u8,
-    SpiWriteRequest { destination: u8, busno: u8, data: u32 },
+    },
-    SpiReadRequest { destination: u8, busno: u8 },
+    I2cWriteRequest {
-    SpiReadReply { succeeded: bool, data: u32 },
+        destination: u8,
-    SpiBasicReply { succeeded: bool },
+        busno: u8,
+        data: u8,
+    },
+    I2cWriteReply {
+        succeeded: bool,
+        ack: bool,
+    },
+    I2cReadRequest {
+        destination: u8,
+        busno: u8,
+        ack: bool,
+    },
+    I2cReadReply {
+        succeeded: bool,
+        data: u8,
+    },
+    I2cBasicReply {
+        succeeded: bool,
+    },
+    I2cSwitchSelectRequest {
+        destination: u8,
+        busno: u8,
+        address: u8,
+        mask: u8,
+    },
 
+    SpiSetConfigRequest {
+        destination: u8,
+        busno: u8,
+        flags: u8,
+        length: u8,
+        div: u8,
+        cs: u8,
+    },
+    SpiWriteRequest {
+        destination: u8,
+        busno: u8,
+        data: u32,
+    },
+    SpiReadRequest {
+        destination: u8,
+        busno: u8,
+    },
+    SpiReadReply {
+        succeeded: bool,
+        data: u32,
+    },
+    SpiBasicReply {
+        succeeded: bool,
+    },
 }
 
 impl Packet {
     pub fn read_from<R>(reader: &mut R) -> Result<Self, Error>
-        where R: Read + ?Sized
+    where R: Read + ?Sized {
-    {
         Ok(match reader.read_u8()? {
             0x00 => Packet::EchoRequest,
             0x01 => Packet::EchoReply,
@@ -69,18 +145,18 @@ impl Packet {
             0x04 => Packet::TSCAck,
 
             0x20 => Packet::DestinationStatusRequest {
-                destination: reader.read_u8()?
+                destination: reader.read_u8()?,
             },
             0x21 => Packet::DestinationDownReply,
             0x22 => Packet::DestinationOkReply,
             0x23 => Packet::DestinationSequenceErrorReply {
-                channel: reader.read_u16()?
+                channel: reader.read_u16()?,
             },
             0x24 => Packet::DestinationCollisionReply {
-                channel: reader.read_u16()?
+                channel: reader.read_u16()?,
             },
             0x25 => Packet::DestinationBusyReply {
-                channel: reader.read_u16()?
+                channel: reader.read_u16()?,
             },
 
             0x30 => {
@@ -89,75 +165,75 @@ impl Packet {
                 reader.read_exact(&mut hops)?;
                 Packet::RoutingSetPath {
                     destination: destination,
-                    hops: hops
+                    hops: hops,
+                }
             }
-            },
             0x31 => Packet::RoutingSetRank {
-                rank: reader.read_u8()?
+                rank: reader.read_u8()?,
             },
             0x32 => Packet::RoutingAck,
 
             0x40 => Packet::MonitorRequest {
                 destination: reader.read_u8()?,
                 channel: reader.read_u16()?,
-                probe: reader.read_u8()?
+                probe: reader.read_u8()?,
             },
             0x41 => Packet::MonitorReply {
-                value: reader.read_u64()?
+                value: reader.read_u64()?,
             },
             0x50 => Packet::InjectionRequest {
                 destination: reader.read_u8()?,
                 channel: reader.read_u16()?,
                 overrd: reader.read_u8()?,
-                value: reader.read_u8()?
+                value: reader.read_u8()?,
             },
             0x51 => Packet::InjectionStatusRequest {
                 destination: reader.read_u8()?,
                 channel: reader.read_u16()?,
-                overrd: reader.read_u8()?
+                overrd: reader.read_u8()?,
             },
             0x52 => Packet::InjectionStatusReply {
-                value: reader.read_u8()?
+                value: reader.read_u8()?,
             },
 
             0x80 => Packet::I2cStartRequest {
                 destination: reader.read_u8()?,
-                busno: reader.read_u8()?
+                busno: reader.read_u8()?,
             },
             0x81 => Packet::I2cRestartRequest {
                 destination: reader.read_u8()?,
-                busno: reader.read_u8()?
+                busno: reader.read_u8()?,
             },
             0x82 => Packet::I2cStopRequest {
                 destination: reader.read_u8()?,
-                busno: reader.read_u8()?
+                busno: reader.read_u8()?,
             },
             0x83 => Packet::I2cWriteRequest {
                 destination: reader.read_u8()?,
                 busno: reader.read_u8()?,
-                data: reader.read_u8()?
+                data: reader.read_u8()?,
             },
             0x84 => Packet::I2cWriteReply {
                 succeeded: reader.read_bool()?,
-                ack: reader.read_bool()?
+                ack: reader.read_bool()?,
             },
             0x85 => Packet::I2cReadRequest {
                 destination: reader.read_u8()?,
                 busno: reader.read_u8()?,
-                ack: reader.read_bool()?
+                ack: reader.read_bool()?,
             },
             0x86 => Packet::I2cReadReply {
                 succeeded: reader.read_bool()?,
-                data: reader.read_u8()?
+                data: reader.read_u8()?,
             },
             0x87 => Packet::I2cBasicReply {
-                succeeded: reader.read_bool()?
+                succeeded: reader.read_bool()?,
             },
             0x88 => Packet::I2cSwitchSelectRequest {
                 destination: reader.read_u8()?,
                 busno: reader.read_u8()?,
                 address: reader.read_u8()?,
-                mask: reader.read_u8()?
+                mask: reader.read_u8()?,
             },
 
             0x90 => Packet::SpiSetConfigRequest {
@@ -166,157 +242,180 @@ impl Packet {
                 flags: reader.read_u8()?,
                 length: reader.read_u8()?,
                 div: reader.read_u8()?,
-                cs: reader.read_u8()?
+                cs: reader.read_u8()?,
             },
             /* 0x91: was Packet::SpiSetXferRequest */
             0x92 => Packet::SpiWriteRequest {
                 destination: reader.read_u8()?,
                 busno: reader.read_u8()?,
-                data: reader.read_u32()?
+                data: reader.read_u32()?,
             },
             0x93 => Packet::SpiReadRequest {
                 destination: reader.read_u8()?,
-                busno: reader.read_u8()?
+                busno: reader.read_u8()?,
             },
             0x94 => Packet::SpiReadReply {
                 succeeded: reader.read_bool()?,
-                data: reader.read_u32()?
+                data: reader.read_u32()?,
             },
             0x95 => Packet::SpiBasicReply {
-                succeeded: reader.read_bool()?
+                succeeded: reader.read_bool()?,
             },
 
-            ty => return Err(Error::UnknownPacket(ty))
+            ty => return Err(Error::UnknownPacket(ty)),
         })
     }
 
     pub fn write_to<W>(&self, writer: &mut W) -> Result<(), IoError>
-        where W: Write + ?Sized
+    where W: Write + ?Sized {
-    {
-
         match *self {
-            Packet::EchoRequest =>
+            Packet::EchoRequest => writer.write_u8(0x00)?,
-                writer.write_u8(0x00)?,
+            Packet::EchoReply => writer.write_u8(0x01)?,
-            Packet::EchoReply =>
+            Packet::ResetRequest => writer.write_u8(0x02)?,
-                writer.write_u8(0x01)?,
+            Packet::ResetAck => writer.write_u8(0x03)?,
-            Packet::ResetRequest =>
+            Packet::TSCAck => writer.write_u8(0x04)?,
-                writer.write_u8(0x02)?,
-            Packet::ResetAck =>
-                writer.write_u8(0x03)?,
-            Packet::TSCAck =>
-                writer.write_u8(0x04)?,
 
             Packet::DestinationStatusRequest { destination } => {
                 writer.write_u8(0x20)?;
                 writer.write_u8(destination)?;
-            },
+            }
-            Packet::DestinationDownReply =>
+            Packet::DestinationDownReply => writer.write_u8(0x21)?,
-                writer.write_u8(0x21)?,
+            Packet::DestinationOkReply => writer.write_u8(0x22)?,
-            Packet::DestinationOkReply =>
-                writer.write_u8(0x22)?,
             Packet::DestinationSequenceErrorReply { channel } => {
                 writer.write_u8(0x23)?;
                 writer.write_u16(channel)?;
-            },
+            }
             Packet::DestinationCollisionReply { channel } => {
                 writer.write_u8(0x24)?;
                 writer.write_u16(channel)?;
-            },
+            }
             Packet::DestinationBusyReply { channel } => {
                 writer.write_u8(0x25)?;
                 writer.write_u16(channel)?;
-            },
+            }
 
             Packet::RoutingSetPath { destination, hops } => {
                 writer.write_u8(0x30)?;
                 writer.write_u8(destination)?;
                 writer.write_all(&hops)?;
-            },
+            }
             Packet::RoutingSetRank { rank } => {
                 writer.write_u8(0x31)?;
                 writer.write_u8(rank)?;
-            },
+            }
-            Packet::RoutingAck =>
+            Packet::RoutingAck => writer.write_u8(0x32)?,
-                writer.write_u8(0x32)?,
 
-            Packet::MonitorRequest { destination, channel, probe } => {
+            Packet::MonitorRequest {
+                destination,
+                channel,
+                probe,
+            } => {
                 writer.write_u8(0x40)?;
                 writer.write_u8(destination)?;
                 writer.write_u16(channel)?;
                 writer.write_u8(probe)?;
-            },
+            }
             Packet::MonitorReply { value } => {
                 writer.write_u8(0x41)?;
                 writer.write_u64(value)?;
-            },
+            }
-            Packet::InjectionRequest { destination, channel, overrd, value } => {
+            Packet::InjectionRequest {
+                destination,
+                channel,
+                overrd,
+                value,
+            } => {
                 writer.write_u8(0x50)?;
                 writer.write_u8(destination)?;
                 writer.write_u16(channel)?;
                 writer.write_u8(overrd)?;
                 writer.write_u8(value)?;
-            },
+            }
-            Packet::InjectionStatusRequest { destination, channel, overrd } => {
+            Packet::InjectionStatusRequest {
+                destination,
+                channel,
+                overrd,
+            } => {
                 writer.write_u8(0x51)?;
                 writer.write_u8(destination)?;
                 writer.write_u16(channel)?;
                 writer.write_u8(overrd)?;
-            },
+            }
             Packet::InjectionStatusReply { value } => {
                 writer.write_u8(0x52)?;
                 writer.write_u8(value)?;
-            },
+            }
 
             Packet::I2cStartRequest { destination, busno } => {
                 writer.write_u8(0x80)?;
                 writer.write_u8(destination)?;
                 writer.write_u8(busno)?;
-            },
+            }
             Packet::I2cRestartRequest { destination, busno } => {
                 writer.write_u8(0x81)?;
                 writer.write_u8(destination)?;
                 writer.write_u8(busno)?;
-            },
+            }
             Packet::I2cStopRequest { destination, busno } => {
                 writer.write_u8(0x82)?;
                 writer.write_u8(destination)?;
                 writer.write_u8(busno)?;
-            },
+            }
-            Packet::I2cWriteRequest { destination, busno, data } => {
+            Packet::I2cWriteRequest {
+                destination,
+                busno,
+                data,
+            } => {
                 writer.write_u8(0x83)?;
                 writer.write_u8(destination)?;
                 writer.write_u8(busno)?;
                 writer.write_u8(data)?;
-            },
+            }
             Packet::I2cWriteReply { succeeded, ack } => {
                 writer.write_u8(0x84)?;
                 writer.write_bool(succeeded)?;
                 writer.write_bool(ack)?;
-            },
+            }
-            Packet::I2cReadRequest { destination, busno, ack } => {
+            Packet::I2cReadRequest {
+                destination,
+                busno,
+                ack,
+            } => {
                 writer.write_u8(0x85)?;
                 writer.write_u8(destination)?;
                 writer.write_u8(busno)?;
                 writer.write_bool(ack)?;
-            },
+            }
             Packet::I2cReadReply { succeeded, data } => {
                 writer.write_u8(0x86)?;
                 writer.write_bool(succeeded)?;
                 writer.write_u8(data)?;
-            },
+            }
             Packet::I2cBasicReply { succeeded } => {
                 writer.write_u8(0x87)?;
                 writer.write_bool(succeeded)?;
-            },
+            }
-            Packet::I2cSwitchSelectRequest { destination, busno, address, mask } => {
+            Packet::I2cSwitchSelectRequest {
+                destination,
+                busno,
+                address,
+                mask,
+            } => {
                 writer.write_u8(0x88)?;
                 writer.write_u8(destination)?;
                 writer.write_u8(busno)?;
                 writer.write_u8(address)?;
                 writer.write_u8(mask)?;
-            },
+            }
 
-            Packet::SpiSetConfigRequest { destination, busno, flags, length, div, cs } => {
+            Packet::SpiSetConfigRequest {
+                destination,
+                busno,
+                flags,
+                length,
+                div,
+                cs,
+            } => {
                 writer.write_u8(0x90)?;
                 writer.write_u8(destination)?;
                 writer.write_u8(busno)?;
@@ -324,30 +423,32 @@ impl Packet {
                 writer.write_u8(length)?;
                 writer.write_u8(div)?;
                 writer.write_u8(cs)?;
-            },
+            }
-            Packet::SpiWriteRequest { destination, busno, data } => {
+            Packet::SpiWriteRequest {
+                destination,
+                busno,
+                data,
+            } => {
                 writer.write_u8(0x92)?;
                 writer.write_u8(destination)?;
                 writer.write_u8(busno)?;
                 writer.write_u32(data)?;
-            },
+            }
             Packet::SpiReadRequest { destination, busno } => {
                 writer.write_u8(0x93)?;
                 writer.write_u8(destination)?;
                 writer.write_u8(busno)?;
-            },
+            }
             Packet::SpiReadReply { succeeded, data } => {
                 writer.write_u8(0x94)?;
                 writer.write_bool(succeeded)?;
                 writer.write_u32(data)?;
-            },
+            }
             Packet::SpiBasicReply { succeeded } => {
                 writer.write_u8(0x95)?;
                 writer.write_bool(succeeded)?;
-            },
+            }
-
         }
         Ok(())
     }
-    
 }

src/libboard_artiq/src/io_expander.rs

@@ -19,10 +19,8 @@ pub struct IoExpander<'a> {
     registers: Registers,
 }
 
-
 impl<'a> IoExpander<'a> {
     pub fn new(i2c: &'a mut i2c::I2c, index: u8) -> Result<Self, &'static str> {
-
         // Both expanders on SHARED I2C bus
         let mut io_expander = match index {
             0 => IoExpander {
@@ -54,10 +52,7 @@ impl<'a> IoExpander<'a> {
             _ => return Err("incorrect I/O expander index"),
         };
         if !io_expander.check_ack()? {
-            info!(
+            info!("MCP23017 io expander {} not found. Checking for PCA9539.", index);
-                "MCP23017 io expander {} not found. Checking for PCA9539.",
-                index
-            );
             io_expander.address += 0xa8; // translate to PCA9539 addresses (see schematic)
             io_expander.registers = Registers {
                 iodira: 0x06,

src/libboard_artiq/src/lib.rs

@@ -1,34 +1,36 @@
 #![no_std]
 #![feature(never_type)]
 
-extern crate log;
+extern crate core_io;
 extern crate crc;
 extern crate embedded_hal;
-extern crate core_io;
 extern crate io;
+extern crate libasync;
 extern crate libboard_zynq;
-extern crate libregister;
 extern crate libconfig;
 extern crate libcortex_a9;
-extern crate libasync;
+extern crate libregister;
+extern crate log;
 extern crate log_buffer;
 
-#[path = "../../../build/pl.rs"]
-pub mod pl;
-pub mod drtioaux_proto;
 pub mod drtio_routing;
-pub mod logger;
-#[cfg(has_si5324)]
-pub mod si5324;
 #[cfg(has_drtio)]
 pub mod drtioaux;
 #[cfg(has_drtio)]
 pub mod drtioaux_async;
-#[cfg(has_drtio)]
+pub mod drtioaux_proto;
-#[path = "../../../build/mem.rs"]
-pub mod mem;
 #[cfg(feature = "target_kasli_soc")]
 pub mod io_expander;
+pub mod logger;
+#[cfg(has_drtio)]
+#[rustfmt::skip]
+#[path = "../../../build/mem.rs"]
+pub mod mem;
+#[rustfmt::skip]
+#[path = "../../../build/pl.rs"]
+pub mod pl;
+#[cfg(has_si5324)]
+pub mod si5324;
 
 use core::{cmp, str};
 

src/libboard_artiq/src/logger.rs

@@ -1,13 +1,13 @@
-use core::cell::Cell;
+use core::{cell::Cell, fmt::Write};
-use core::fmt::Write;
+
-use log::{Log, LevelFilter};
-use log_buffer::LogBuffer;
-use libcortex_a9::mutex::{Mutex, MutexGuard};
 use libboard_zynq::{println, timer::GlobalTimer};
+use libcortex_a9::mutex::{Mutex, MutexGuard};
+use log::{LevelFilter, Log};
+use log_buffer::LogBuffer;
 
 pub struct LogBufferRef<'a> {
     buffer: MutexGuard<'a, LogBuffer<&'static mut [u8]>>,
-    old_log_level: LevelFilter
+    old_log_level: LevelFilter,
 }
 
 impl<'a> LogBufferRef<'a> {
@@ -56,8 +56,7 @@ impl BufferLogger {
     pub fn register(self) {
         unsafe {
             LOGGER = Some(self);
-            log::set_logger(LOGGER.as_ref().unwrap())
+            log::set_logger(LOGGER.as_ref().unwrap()).expect("global logger can only be initialized once");
-                .expect("global logger can only be initialized once");
         }
     }
 
@@ -66,9 +65,7 @@ impl BufferLogger {
     }
 
     pub fn buffer<'a>(&'a self) -> Option<LogBufferRef<'a>> {
-        self.buffer
+        self.buffer.try_lock().map(LogBufferRef::new)
-            .try_lock()
-            .map(LogBufferRef::new)
     }
 
     pub fn uart_log_level(&self) -> LevelFilter {
@@ -99,25 +96,36 @@ impl Log for BufferLogger {
 
     fn log(&self, record: &log::Record) {
         if self.enabled(record.metadata()) {
-            let timestamp = unsafe {
+            let timestamp = unsafe { GlobalTimer::get() }.get_us().0;
-                GlobalTimer::get()
-            }.get_us().0;
             let seconds = timestamp / 1_000_000;
             let micros = timestamp % 1_000_000;
 
             if record.level() <= self.buffer_log_level() {
                 let mut buffer = self.buffer.lock();
-                writeln!(buffer, "[{:6}.{:06}s] {:>5}({}): {}", seconds, micros,
+                writeln!(
-                         record.level(), record.target(), record.args()).unwrap();
+                    buffer,
+                    "[{:6}.{:06}s] {:>5}({}): {}",
+                    seconds,
+                    micros,
+                    record.level(),
+                    record.target(),
+                    record.args()
+                )
+                .unwrap();
             }
 
             if record.level() <= self.uart_log_level() {
-                println!("[{:6}.{:06}s] {:>5}({}): {}", seconds, micros,
+                println!(
-                         record.level(), record.target(), record.args());
+                    "[{:6}.{:06}s] {:>5}({}): {}",
+                    seconds,
+                    micros,
+                    record.level(),
+                    record.target(),
+                    record.args()
+                );
             }
         }
     }
 
-    fn flush(&self) {
+    fn flush(&self) {}
-    }
 }

src/libboard_artiq/src/si5324.rs

@@ -1,7 +1,9 @@
 use core::result;
-use log::info;
+
-use libboard_zynq::{i2c::I2c, timer::GlobalTimer, time::Milliseconds};
 use embedded_hal::blocking::delay::DelayUs;
+use libboard_zynq::{i2c::I2c, time::Milliseconds, timer::GlobalTimer};
+use log::info;
+
 #[cfg(not(si5324_soft_reset))]
 use crate::pl::csr;
 
@@ -11,9 +13,13 @@ const ADDRESS: u8 = 0x68;
 
 #[cfg(not(si5324_soft_reset))]
 fn hard_reset(timer: &mut GlobalTimer) {
-    unsafe { csr::si5324_rst_n::out_write(0); }
+    unsafe {
+        csr::si5324_rst_n::out_write(0);
+    }
     timer.delay_us(1_000);
-    unsafe { csr::si5324_rst_n::out_write(1); }
+    unsafe {
+        csr::si5324_rst_n::out_write(1);
+    }
     timer.delay_us(10_000);
 }
 
@@ -29,7 +35,7 @@ pub struct FrequencySettings {
     pub n31: u32,
     pub n32: u32,
     pub bwsel: u8,
-    pub crystal_as_ckin2: bool
+    pub crystal_as_ckin2: bool,
 }
 
 pub enum Input {
@@ -39,22 +45,22 @@ pub enum Input {
 
 fn map_frequency_settings(settings: &FrequencySettings) -> Result<FrequencySettings> {
     if settings.nc1_ls != 0 && (settings.nc1_ls % 2) == 1 {
-        return Err("NC1_LS must be 0 or even")
+        return Err("NC1_LS must be 0 or even");
     }
     if settings.nc1_ls > (1 << 20) {
-        return Err("NC1_LS is too high")
+        return Err("NC1_LS is too high");
     }
     if (settings.n2_ls % 2) == 1 {
-        return Err("N2_LS must be even")
+        return Err("N2_LS must be even");
     }
     if settings.n2_ls > (1 << 20) {
-        return Err("N2_LS is too high")
+        return Err("N2_LS is too high");
     }
     if settings.n31 > (1 << 19) {
-        return Err("N31 is too high")
+        return Err("N31 is too high");
     }
     if settings.n32 > (1 << 19) {
-        return Err("N32 is too high")
+        return Err("N32 is too high");
     }
     let r = FrequencySettings {
         n1_hs: match settings.n1_hs {
@@ -66,7 +72,7 @@ fn map_frequency_settings(settings: &FrequencySettings) -> Result<FrequencySetti
             9 => 0b101,
             10 => 0b110,
             11 => 0b111,
-            _  => return Err("N1_HS has an invalid value")
+            _ => return Err("N1_HS has an invalid value"),
         },
         nc1_ls: settings.nc1_ls - 1,
         n2_hs: match settings.n2_hs {
@@ -78,13 +84,13 @@ fn map_frequency_settings(settings: &FrequencySettings) -> Result<FrequencySetti
             9 => 0b101,
             10 => 0b110,
             11 => 0b111,
-            _  => return Err("N2_HS has an invalid value")
+            _ => return Err("N2_HS has an invalid value"),
         },
         n2_ls: settings.n2_ls - 1,
         n31: settings.n31 - 1,
         n32: settings.n32 - 1,
         bwsel: settings.bwsel,
-        crystal_as_ckin2: settings.crystal_as_ckin2
+        crystal_as_ckin2: settings.crystal_as_ckin2,
     };
     Ok(r)
 }
@@ -92,13 +98,13 @@ fn map_frequency_settings(settings: &FrequencySettings) -> Result<FrequencySetti
 fn write(i2c: &mut I2c, reg: u8, val: u8) -> Result<()> {
     i2c.start().unwrap();
     if !i2c.write(ADDRESS << 1).unwrap() {
-        return Err("Si5324 failed to ack write address")
+        return Err("Si5324 failed to ack write address");
     }
     if !i2c.write(reg).unwrap() {
-        return Err("Si5324 failed to ack register")
+        return Err("Si5324 failed to ack register");
     }
     if !i2c.write(val).unwrap() {
-        return Err("Si5324 failed to ack value")
+        return Err("Si5324 failed to ack value");
     }
     i2c.stop().unwrap();
     Ok(())
@@ -108,10 +114,10 @@ fn write(i2c: &mut I2c, reg: u8, val: u8) -> Result<()> {
 fn write_no_ack_value(i2c: &mut I2c, reg: u8, val: u8) -> Result<()> {
     i2c.start().unwrap();
     if !i2c.write(ADDRESS << 1).unwrap() {
-        return Err("Si5324 failed to ack write address")
+        return Err("Si5324 failed to ack write address");
     }
     if !i2c.write(reg).unwrap() {
-        return Err("Si5324 failed to ack register")
+        return Err("Si5324 failed to ack register");
     }
     i2c.write(val).unwrap();
     i2c.stop().unwrap();
@@ -121,22 +127,22 @@ fn write_no_ack_value(i2c: &mut I2c, reg: u8, val: u8) -> Result<()> {
 fn read(i2c: &mut I2c, reg: u8) -> Result<u8> {
     i2c.start().unwrap();
     if !i2c.write(ADDRESS << 1).unwrap() {
-        return Err("Si5324 failed to ack write address")
+        return Err("Si5324 failed to ack write address");
     }
     if !i2c.write(reg).unwrap() {
-        return Err("Si5324 failed to ack register")
+        return Err("Si5324 failed to ack register");
     }
     i2c.restart().unwrap();
     if !i2c.write((ADDRESS << 1) | 1).unwrap() {
-        return Err("Si5324 failed to ack read address")
+        return Err("Si5324 failed to ack read address");
     }
     let val = i2c.read(false).unwrap();
     i2c.stop().unwrap();
     Ok(val)
 }
 
-fn rmw<F>(i2c: &mut I2c, reg: u8, f: F) -> Result<()> where
+fn rmw<F>(i2c: &mut I2c, reg: u8, f: F) -> Result<()>
-        F: Fn(u8) -> u8 {
+where F: Fn(u8) -> u8 {
     let value = read(i2c, reg)?;
     write(i2c, reg, f(value))?;
     Ok(())
@@ -235,15 +241,15 @@ pub fn setup(i2c: &mut I2c, settings: &FrequencySettings, input: Input, timer: &
     rmw(i2c, 3, |v| (v & 0x2f) | (cksel_reg << 6) | 0x10)?; // CKSEL_REG, SQ_ICAL=1
     rmw(i2c, 4, |v| (v & 0x3f) | (0b00 << 6))?; // AUTOSEL_REG=b00
     rmw(i2c, 6, |v| (v & 0xc0) | 0b111111)?; // SFOUT2_REG=b111 SFOUT1_REG=b111
-    write(i2c, 25,  (s.n1_hs  << 5 ) as u8)?;
+    write(i2c, 25, (s.n1_hs << 5) as u8)?;
     write(i2c, 31, (s.nc1_ls >> 16) as u8)?;
-    write(i2c, 32,  (s.nc1_ls >> 8 ) as u8)?;
+    write(i2c, 32, (s.nc1_ls >> 8) as u8)?;
     write(i2c, 33, (s.nc1_ls) as u8)?;
     write(i2c, 34, (s.nc1_ls >> 16) as u8)?; // write to NC2_LS as well
-    write(i2c, 35,  (s.nc1_ls >> 8 ) as u8)?;
+    write(i2c, 35, (s.nc1_ls >> 8) as u8)?;
     write(i2c, 36, (s.nc1_ls) as u8)?;
-    write(i2c, 40,  (s.n2_hs  << 5 ) as u8 | (s.n2_ls  >> 16) as u8)?;
+    write(i2c, 40, (s.n2_hs << 5) as u8 | (s.n2_ls >> 16) as u8)?;
-    write(i2c, 41,  (s.n2_ls  >> 8 ) as u8)?;
+    write(i2c, 41, (s.n2_ls >> 8) as u8)?;
     write(i2c, 42, (s.n2_ls) as u8)?;
     write(i2c, 43, (s.n31 >> 16) as u8)?;
     write(i2c, 44, (s.n31 >> 8) as u8)?;
@@ -309,9 +315,7 @@ pub mod siphaser {
             csr::siphaser::error_write(1);
         }
         timer.delay_us(5_000);
-        unsafe {
+        unsafe { csr::siphaser::error_read() != 0 }
-            csr::siphaser::error_read() != 0
-        }
     }
 
     fn find_edge(target: bool, timer: &mut GlobalTimer) -> Result<u32> {
@@ -340,11 +344,16 @@ pub mod siphaser {
         }
         let width = find_edge(true, timer)? + jitter_margin;
         // width is 360 degrees (one full rotation of the phase between s/h limits) minus jitter
-        info!("calibration successful, lead: {}, width: {} ({}deg)", lead, width, width*360/(56*8));
+        info!(
+            "calibration successful, lead: {}, width: {} ({}deg)",
+            lead,
+            width,
+            width * 360 / (56 * 8)
+        );
 
         // Apply reverse phase shift for half the width to get into the
         // middle of the working region.
-        for _ in 0..width/2 {
+        for _ in 0..width / 2 {
             phase_shift(0, timer);
         }
 

src/libbuild_zynq/lib.rs

@@ -1,8 +1,7 @@
-use std::env;
+use std::{env,
-use std::fs::File;
+          fs::File,
-use std::io::{BufRead, BufReader, Write};
+          io::{BufRead, BufReader, Write},
-use std::path::PathBuf;
+          path::PathBuf};
-
 
 pub fn add_linker_script() {
     // Put the linker script somewhere the linker can find it

src/libc/build.rs

@@ -4,8 +4,7 @@ fn main() {
 }
 
 mod libc {
-    use std::path::Path;
+    use std::{env, path::Path};
-    use std::env;
 
     pub fn compile() {
         let cfg = &mut cc::Build::new();
@@ -32,9 +31,7 @@ mod libc {
         cfg.flag("-U_FORTIFY_SOURCE");
         cfg.define("_FORTIFY_SOURCE", Some("0"));
 
-        let sources = vec![
+        let sources = vec!["printf.c"];
-            "printf.c"
-        ];
 
         let root = Path::new("./");
         for src in sources {

src/libdwarf/src/eh.rs

@@ -11,10 +11,12 @@
 #![allow(non_upper_case_globals)]
 #![allow(unused)]
 
-use crate::DwarfReader;
 use core::mem;
+
 use cslice::CSlice;
 
+use crate::DwarfReader;
+
 pub const DW_EH_PE_omit: u8 = 0xFF;
 pub const DW_EH_PE_absptr: u8 = 0x00;
 
@@ -160,15 +162,11 @@ pub unsafe fn find_eh_action(
                         if ar_filter == 0 {
                             saw_cleanup = true;
                         } else if ar_filter > 0 {
-                            let catch_type = get_ttype_entry(
+                            let catch_type =
-                                ar_filter as usize,
+                                get_ttype_entry(ar_filter as usize, ttype_encoding, ttype_base, ttype_table)?;
-                                ttype_encoding,
-                                ttype_base,
-                                ttype_table,
-                            )?;
                             match catch_type {
                                 Some(clause_ptr) if *(clause_ptr as *const u32) == id => {
-                                    return Ok(EHAction::Catch(lpad))
+                                    return Ok(EHAction::Catch(lpad));
                                 }
                                 None => return Ok(EHAction::Catch(lpad)),
                                 _ => {}
@@ -251,19 +249,11 @@ fn get_base(encoding: u8, context: &EHContext<'_>) -> Result<usize, ()> {
     }
 }
 
-unsafe fn read_encoded_pointer(
+unsafe fn read_encoded_pointer(reader: &mut DwarfReader, context: &EHContext<'_>, encoding: u8) -> Result<usize, ()> {
-    reader: &mut DwarfReader,
-    context: &EHContext<'_>,
-    encoding: u8,
-) -> Result<usize, ()> {
     read_encoded_pointer_with_base(reader, encoding, get_base(encoding, context)?)
 }
 
-unsafe fn read_encoded_pointer_with_base(
+unsafe fn read_encoded_pointer_with_base(reader: &mut DwarfReader, encoding: u8, base: usize) -> Result<usize, ()> {
-    reader: &mut DwarfReader,
-    encoding: u8,
-    base: usize,
-) -> Result<usize, ()> {
     if encoding == DW_EH_PE_omit {
         return Err(());
     }

src/libdyld/src/elf.rs

@@ -1451,8 +1451,7 @@ pub const R_AARCH64_TLSDESC_CALL: usize = 569;
 pub const R_AARCH64_TLSLE_LDST128_TPREL_LO12: usize = 570;
 pub const R_AARCH64_TLSLE_LDST128_TPREL_LO12_NC: usize = 571;
 pub const R_AARCH64_TLSLD_LDST128_DTPREL_LO12: usize = 572;
-pub const R_AARCH64_TLSLD_LDST128_DTPREL_LO12_NC: usize =
+pub const R_AARCH64_TLSLD_LDST128_DTPREL_LO12_NC: usize = 573;
-    573;
 pub const R_AARCH64_COPY: usize = 1024;
 pub const R_AARCH64_GLOB_DAT: usize = 1025;
 pub const R_AARCH64_JUMP_SLOT: usize = 1026;
@@ -2267,7 +2266,9 @@ pub struct Elf32_Ehdr {
     pub e_shstrndx: Elf32_Half,
 }
 impl Clone for Elf32_Ehdr {
-    fn clone(&self) -> Self { *self }
+    fn clone(&self) -> Self {
+        *self
+    }
 }
 #[repr(C)]
 #[derive(Debug, Copy)]
@@ -2288,7 +2289,9 @@ pub struct Elf64_Ehdr {
     pub e_shstrndx: Elf64_Half,
 }
 impl Clone for Elf64_Ehdr {
-    fn clone(&self) -> Self { *self }
+    fn clone(&self) -> Self {
+        *self
+    }
 }
 #[repr(C)]
 #[derive(Debug, Copy)]
@@ -2305,7 +2308,9 @@ pub struct Elf32_Shdr {
     pub sh_entsize: Elf32_Word,
 }
 impl Clone for Elf32_Shdr {
-    fn clone(&self) -> Self { *self }
+    fn clone(&self) -> Self {
+        *self
+    }
 }
 #[repr(C)]
 #[derive(Debug, Copy)]
@@ -2322,7 +2327,9 @@ pub struct Elf64_Shdr {
     pub sh_entsize: Elf64_Xword,
 }
 impl Clone for Elf64_Shdr {
-    fn clone(&self) -> Self { *self }
+    fn clone(&self) -> Self {
+        *self
+    }
 }
 #[repr(C)]
 #[derive(Debug, Copy)]
@@ -2335,7 +2342,9 @@ pub struct Elf32_Sym {
     pub st_shndx: Elf32_Section,
 }
 impl Clone for Elf32_Sym {
-    fn clone(&self) -> Self { *self }
+    fn clone(&self) -> Self {
+        *self
+    }
 }
 #[repr(C)]
 #[derive(Debug, Copy)]
@@ -2348,7 +2357,9 @@ pub struct Elf64_Sym {
     pub st_size: Elf64_Xword,
 }
 impl Clone for Elf64_Sym {
-    fn clone(&self) -> Self { *self }
+    fn clone(&self) -> Self {
+        *self
+    }
 }
 #[repr(C)]
 #[derive(Debug, Copy)]
@@ -2357,7 +2368,9 @@ pub struct Elf32_Syminfo {
     pub si_flags: Elf32_Half,
 }
 impl Clone for Elf32_Syminfo {
-    fn clone(&self) -> Self { *self }
+    fn clone(&self) -> Self {
+        *self
+    }
 }
 #[repr(C)]
 #[derive(Debug, Copy)]
@@ -2366,7 +2379,9 @@ pub struct Elf64_Syminfo {
     pub si_flags: Elf64_Half,
 }
 impl Clone for Elf64_Syminfo {
-    fn clone(&self) -> Self { *self }
+    fn clone(&self) -> Self {
+        *self
+    }
 }
 #[repr(C)]
 #[derive(Debug, Copy)]
@@ -2375,7 +2390,9 @@ pub struct Elf32_Rel {
     pub r_info: Elf32_Word,
 }
 impl Clone for Elf32_Rel {
-    fn clone(&self) -> Self { *self }
+    fn clone(&self) -> Self {
+        *self
+    }
 }
 #[repr(C)]
 #[derive(Debug, Copy)]
@@ -2384,7 +2401,9 @@ pub struct Elf64_Rel {
     pub r_info: Elf64_Xword,
 }
 impl Clone for Elf64_Rel {
-    fn clone(&self) -> Self { *self }
+    fn clone(&self) -> Self {
+        *self
+    }
 }
 #[repr(C)]
 #[derive(Debug, Copy)]
@@ -2394,7 +2413,9 @@ pub struct Elf32_Rela {
     pub r_addend: Elf32_Sword,
 }
 impl Clone for Elf32_Rela {
-    fn clone(&self) -> Self { *self }
+    fn clone(&self) -> Self {
+        *self
+    }
 }
 #[repr(C)]
 #[derive(Debug, Copy)]
@@ -2404,7 +2425,9 @@ pub struct Elf64_Rela {
     pub r_addend: Elf64_Sxword,
 }
 impl Clone for Elf64_Rela {
-    fn clone(&self) -> Self { *self }
+    fn clone(&self) -> Self {
+        *self
+    }
 }
 #[repr(C)]
 #[derive(Debug, Copy)]
@@ -2419,7 +2442,9 @@ pub struct Elf32_Phdr {
     pub p_align: Elf32_Word,
 }
 impl Clone for Elf32_Phdr {
-    fn clone(&self) -> Self { *self }
+    fn clone(&self) -> Self {
+        *self
+    }
 }
 #[repr(C)]
 #[derive(Debug, Copy)]
@@ -2434,7 +2459,9 @@ pub struct Elf64_Phdr {
     pub p_align: Elf64_Xword,
 }
 impl Clone for Elf64_Phdr {
-    fn clone(&self) -> Self { *self }
+    fn clone(&self) -> Self {
+        *self
+    }
 }
 #[repr(C)]
 #[derive(Copy)]
@@ -2449,10 +2476,14 @@ pub union Elf32_Dyn__bindgen_ty_1 {
     pub d_ptr: Elf32_Addr,
 }
 impl Clone for Elf32_Dyn__bindgen_ty_1 {
-    fn clone(&self) -> Self { *self }
+    fn clone(&self) -> Self {
+        *self
+    }
 }
 impl Clone for Elf32_Dyn {
-    fn clone(&self) -> Self { *self }
+    fn clone(&self) -> Self {
+        *self
+    }
 }
 #[repr(C)]
 #[derive(Copy)]
@@ -2467,10 +2498,14 @@ pub union Elf64_Dyn__bindgen_ty_1 {
     pub d_ptr: Elf64_Addr,
 }
 impl Clone for Elf64_Dyn__bindgen_ty_1 {
-    fn clone(&self) -> Self { *self }
+    fn clone(&self) -> Self {
+        *self
+    }
 }
 impl Clone for Elf64_Dyn {
-    fn clone(&self) -> Self { *self }
+    fn clone(&self) -> Self {
+        *self
+    }
 }
 #[repr(C)]
 #[derive(Debug, Copy)]
@@ -2484,7 +2519,9 @@ pub struct Elf32_Verdef {
     pub vd_next: Elf32_Word,
 }
 impl Clone for Elf32_Verdef {
-    fn clone(&self) -> Self { *self }
+    fn clone(&self) -> Self {
+        *self
+    }
 }
 #[repr(C)]
 #[derive(Debug, Copy)]
@@ -2498,7 +2535,9 @@ pub struct Elf64_Verdef {
     pub vd_next: Elf64_Word,
 }
 impl Clone for Elf64_Verdef {
-    fn clone(&self) -> Self { *self }
+    fn clone(&self) -> Self {
+        *self
+    }
 }
 #[repr(C)]
 #[derive(Debug, Copy)]
@@ -2507,7 +2546,9 @@ pub struct Elf32_Verdaux {
     pub vda_next: Elf32_Word,
 }
 impl Clone for Elf32_Verdaux {
-    fn clone(&self) -> Self { *self }
+    fn clone(&self) -> Self {
+        *self
+    }
 }
 #[repr(C)]
 #[derive(Debug, Copy)]
@@ -2516,7 +2557,9 @@ pub struct Elf64_Verdaux {
     pub vda_next: Elf64_Word,
 }
 impl Clone for Elf64_Verdaux {
-    fn clone(&self) -> Self { *self }
+    fn clone(&self) -> Self {
+        *self
+    }
 }
 #[repr(C)]
 #[derive(Debug, Copy)]
@@ -2528,7 +2571,9 @@ pub struct Elf32_Verneed {
     pub vn_next: Elf32_Word,
 }
 impl Clone for Elf32_Verneed {
-    fn clone(&self) -> Self { *self }
+    fn clone(&self) -> Self {
+        *self
+    }
 }
 #[repr(C)]
 #[derive(Debug, Copy)]
@@ -2540,7 +2585,9 @@ pub struct Elf64_Verneed {
     pub vn_next: Elf64_Word,
 }
 impl Clone for Elf64_Verneed {
-    fn clone(&self) -> Self { *self }
+    fn clone(&self) -> Self {
+        *self
+    }
 }
 #[repr(C)]
 #[derive(Debug, Copy)]
@@ -2552,7 +2599,9 @@ pub struct Elf32_Vernaux {
     pub vna_next: Elf32_Word,
 }
 impl Clone for Elf32_Vernaux {
-    fn clone(&self) -> Self { *self }
+    fn clone(&self) -> Self {
+        *self
+    }
 }
 #[repr(C)]
 #[derive(Debug, Copy)]
@@ -2564,7 +2613,9 @@ pub struct Elf64_Vernaux {
     pub vna_next: Elf64_Word,
 }
 impl Clone for Elf64_Vernaux {
-    fn clone(&self) -> Self { *self }
+    fn clone(&self) -> Self {
+        *self
+    }
 }
 #[repr(C)]
 #[derive(Copy)]
@@ -2578,10 +2629,14 @@ pub union Elf32_auxv_t__bindgen_ty_1 {
     pub a_val: u32,
 }
 impl Clone for Elf32_auxv_t__bindgen_ty_1 {
-    fn clone(&self) -> Self { *self }
+    fn clone(&self) -> Self {
+        *self
+    }
 }
 impl Clone for Elf32_auxv_t {
-    fn clone(&self) -> Self { *self }
+    fn clone(&self) -> Self {
+        *self
+    }
 }
 #[repr(C)]
 #[derive(Copy)]
@@ -2595,10 +2650,14 @@ pub union Elf64_auxv_t__bindgen_ty_1 {
     pub a_val: u64,
 }
 impl Clone for Elf64_auxv_t__bindgen_ty_1 {
-    fn clone(&self) -> Self { *self }
+    fn clone(&self) -> Self {
+        *self
+    }
 }
 impl Clone for Elf64_auxv_t {
-    fn clone(&self) -> Self { *self }
+    fn clone(&self) -> Self {
+        *self
+    }
 }
 #[repr(C)]
 #[derive(Debug, Copy)]
@@ -2608,7 +2667,9 @@ pub struct Elf32_Nhdr {
     pub n_type: Elf32_Word,
 }
 impl Clone for Elf32_Nhdr {
-    fn clone(&self) -> Self { *self }
+    fn clone(&self) -> Self {
+        *self
+    }
 }
 #[repr(C)]
 #[derive(Debug, Copy)]
@@ -2618,7 +2679,9 @@ pub struct Elf64_Nhdr {
     pub n_type: Elf64_Word,
 }
 impl Clone for Elf64_Nhdr {
-    fn clone(&self) -> Self { *self }
+    fn clone(&self) -> Self {
+        *self
+    }
 }
 #[repr(C)]
 #[derive(Debug, Copy)]
@@ -2630,7 +2693,9 @@ pub struct Elf32_Move {
     pub m_stride: Elf32_Half,
 }
 impl Clone for Elf32_Move {
-    fn clone(&self) -> Self { *self }
+    fn clone(&self) -> Self {
+        *self
+    }
 }
 #[repr(C)]
 #[derive(Debug, Copy)]
@@ -2642,7 +2707,9 @@ pub struct Elf64_Move {
     pub m_stride: Elf64_Half,
 }
 impl Clone for Elf64_Move {
-    fn clone(&self) -> Self { *self }
+    fn clone(&self) -> Self {
+        *self
+    }
 }
 #[repr(C)]
 #[derive(Copy)]
@@ -2657,7 +2724,9 @@ pub struct Elf32_gptab__bindgen_ty_1 {
     pub gt_unused: Elf32_Word,
 }
 impl Clone for Elf32_gptab__bindgen_ty_1 {
-    fn clone(&self) -> Self { *self }
+    fn clone(&self) -> Self {
+        *self
+    }
 }
 #[repr(C)]
 #[derive(Debug, Copy)]
@@ -2666,10 +2735,14 @@ pub struct Elf32_gptab__bindgen_ty_2 {
     pub gt_bytes: Elf32_Word,
 }
 impl Clone for Elf32_gptab__bindgen_ty_2 {
-    fn clone(&self) -> Self { *self }
+    fn clone(&self) -> Self {
+        *self
+    }
 }
 impl Clone for Elf32_gptab {
-    fn clone(&self) -> Self { *self }
+    fn clone(&self) -> Self {
+        *self
+    }
 }
 #[repr(C)]
 #[derive(Debug, Copy)]
@@ -2679,7 +2752,9 @@ pub struct Elf32_RegInfo {
     pub ri_gp_value: Elf32_Sword,
 }
 impl Clone for Elf32_RegInfo {
-    fn clone(&self) -> Self { *self }
+    fn clone(&self) -> Self {
+        *self
+    }
 }
 #[repr(C)]
 #[derive(Debug, Copy)]
@@ -2690,7 +2765,9 @@ pub struct Elf_Options {
     pub info: Elf32_Word,
 }
 impl Clone for Elf_Options {
-    fn clone(&self) -> Self { *self }
+    fn clone(&self) -> Self {
+        *self
+    }
 }
 #[repr(C)]
 #[derive(Debug, Copy)]
@@ -2699,7 +2776,9 @@ pub struct Elf_Options_Hw {
     pub hwp_flags2: Elf32_Word,
 }
 impl Clone for Elf_Options_Hw {
-    fn clone(&self) -> Self { *self }
+    fn clone(&self) -> Self {
+        *self
+    }
 }
 #[repr(C)]
 #[derive(Debug, Copy)]
@@ -2711,7 +2790,9 @@ pub struct Elf32_Lib {
     pub l_flags: Elf32_Word,
 }
 impl Clone for Elf32_Lib {
-    fn clone(&self) -> Self { *self }
+    fn clone(&self) -> Self {
+        *self
+    }
 }
 #[repr(C)]
 #[derive(Debug, Copy)]
@@ -2723,17 +2804,31 @@ pub struct Elf64_Lib {
     pub l_flags: Elf64_Word,
 }
 impl Clone for Elf64_Lib {
-    fn clone(&self) -> Self { *self }
+    fn clone(&self) -> Self {
+        *self
+    }
 }
 pub type Elf32_Conflict = Elf32_Addr;
 #[repr(C)]
 #[derive(Clone, Copy)]
 pub struct EXIDX_Entry(u32, u32);
 
-pub fn ELF32_R_SYM(info: Elf32_Word) -> Elf32_Word { info >> 8 }
+pub fn ELF32_R_SYM(info: Elf32_Word) -> Elf32_Word {
-pub fn ELF32_R_TYPE(info: Elf32_Word) -> u8 { info as u8 }
+    info >> 8
-pub fn ELF32_R_INFO(sym: Elf32_Word, ty: u8) -> Elf32_Word { sym << 8 | ty as Elf32_Word }
+}
+pub fn ELF32_R_TYPE(info: Elf32_Word) -> u8 {
+    info as u8
+}
+pub fn ELF32_R_INFO(sym: Elf32_Word, ty: u8) -> Elf32_Word {
+    sym << 8 | ty as Elf32_Word
+}
 
-pub fn ELF32_ST_BIND(info: u8) -> u8 { info >> 4 }
+pub fn ELF32_ST_BIND(info: u8) -> u8 {
-pub fn ELF32_ST_TYPE(info: u8) -> u8 { info & 0xf }
+    info >> 4
-pub fn ELF32_ST_INFO(bind: u8, ty: u8) -> u8 { (bind << 4) | (ty & 0xf) }
+}
+pub fn ELF32_ST_TYPE(info: u8) -> u8 {
+    info & 0xf
+}
+pub fn ELF32_ST_INFO(bind: u8, ty: u8) -> u8 {
+    (bind << 4) | (ty & 0xf)
+}

src/libdyld/src/file.rs

@@ -1,8 +1,8 @@
-use core::{mem, ptr, ops::{Deref, Range}};
+use core::{mem,
-use super::{
+           ops::{Deref, Range},
-    Arch,
+           ptr};
-    elf::*,
+
-};
+use super::{elf::*, Arch};
 
 fn read_unaligned<T: Copy>(data: &[u8], offset: usize) -> Option<T> {
     if data.len() < offset + mem::size_of::<T>() {
@@ -31,14 +31,40 @@ impl<'a> File<'a> {
 
     pub fn arch(&self) -> Option<Arch> {
         const IDENT_OPENRISC: [u8; EI_NIDENT] = [
-            ELFMAG0,    ELFMAG1,     ELFMAG2,    ELFMAG3,
+            ELFMAG0,
-            ELFCLASS32, ELFDATA2MSB, EV_CURRENT, ELFOSABI_NONE,
+            ELFMAG1,
-            /* ABI version */ 0, /* padding */ 0, 0, 0, 0, 0, 0, 0
+            ELFMAG2,
+            ELFMAG3,
+            ELFCLASS32,
+            ELFDATA2MSB,
+            EV_CURRENT,
+            ELFOSABI_NONE,
+            /* ABI version */ 0,
+            /* padding */ 0,
+            0,
+            0,
+            0,
+            0,
+            0,
+            0,
         ];
         const IDENT_ARM: [u8; EI_NIDENT] = [
-            ELFMAG0,    ELFMAG1,     ELFMAG2,    ELFMAG3,
+            ELFMAG0,
-            ELFCLASS32, ELFDATA2LSB, EV_CURRENT, ELFOSABI_NONE,
+            ELFMAG1,
-            /* ABI version */ 0, /* padding */ 0, 0, 0, 0, 0, 0, 0
+            ELFMAG2,
+            ELFMAG3,
+            ELFCLASS32,
+            ELFDATA2LSB,
+            EV_CURRENT,
+            ELFOSABI_NONE,
+            /* ABI version */ 0,
+            /* padding */ 0,
+            0,
+            0,
+            0,
+            0,
+            0,
+            0,
         ];
 
         match (self.ehdr.e_ident, self.ehdr.e_machine) {
@@ -48,16 +74,14 @@ impl<'a> File<'a> {
         }
     }
 
-    pub fn program_headers<'b>(&'b self) -> impl Iterator<Item = Option<Elf32_Phdr>> + 'b
+    pub fn program_headers<'b>(&'b self) -> impl Iterator<Item = Option<Elf32_Phdr>> + 'b {
-    {
         (0..self.ehdr.e_phnum).map(move |i| {
             let phdr_off = self.ehdr.e_phoff as usize + mem::size_of::<Elf32_Phdr>() * i as usize;
             self.read_unaligned::<Elf32_Phdr>(phdr_off)
         })
     }
 
-    pub fn section_headers<'b>(&'b self) -> impl Iterator<Item = Option<Elf32_Shdr>> + 'b
+    pub fn section_headers<'b>(&'b self) -> impl Iterator<Item = Option<Elf32_Shdr>> + 'b {
-    {
         (0..self.ehdr.e_shnum).map(move |i| {
             let shdr_off = self.ehdr.e_shoff as usize + mem::size_of::<Elf32_Shdr>() * i as usize;
             self.read_unaligned::<Elf32_Shdr>(shdr_off)

src/libdyld/src/image.rs

@@ -1,13 +1,9 @@
-use core::{
-    ops::{Deref, DerefMut, Range},
-    mem,
-    slice,
-};
 use alloc::alloc::{alloc_zeroed, dealloc, Layout, LayoutError};
-use super::{
+use core::{mem,
-    elf::*,
+           ops::{Deref, DerefMut, Range},
-    Error,
+           slice};
-};
+
+use super::{elf::*, Error};
 
 pub struct DynamicSection {
     pub strtab: Range<usize>,
@@ -34,17 +30,12 @@ impl Image {
             slice::from_raw_parts_mut(ptr, size)
         };
 
-        Ok(Image {
+        Ok(Image { layout, data })
-            layout,
-            data,
-        })
     }
 
     /// assumes that self.data is properly aligned
     pub(crate) fn get_ref<T>(&self, offset: usize) -> Option<&T>
-    where
+    where T: Copy {
-        T: Copy,
-    {
         if self.data.len() < offset + mem::size_of::<T>() {
             None
         } else if (self.data.as_ptr() as usize + offset) & (mem::align_of::<T>() - 1) != 0 {
@@ -66,14 +57,10 @@ impl Image {
         unsafe { slice::from_raw_parts(ptr, len) }
     }
 
-    fn dyn_headers<'a>(&'a self, range: Range<usize>) ->
+    fn dyn_headers<'a>(&'a self, range: Range<usize>) -> impl Iterator<Item = &'a Elf32_Dyn> + 'a {
-        impl Iterator<Item = &'a Elf32_Dyn> + 'a
-    {
         range
             .step_by(mem::size_of::<Elf32_Dyn>())
-            .filter_map(move |offset| {
+            .filter_map(move |offset| self.get_ref::<Elf32_Dyn>(offset))
-                self.get_ref::<Elf32_Dyn>(offset)
-            })
             .take_while(|d| unsafe { d.d_un.d_val } as i32 != DT_NULL)
     }
 
@@ -107,14 +94,16 @@ impl Image {
                 DT_JMPREL => pltrel_off = val,
                 DT_PLTRELSZ => pltrel_sz = val,
                 DT_HASH => {
-                    nbucket  = *self.get_ref::<Elf32_Word>(val + 0)
+                    nbucket = *self
+                        .get_ref::<Elf32_Word>(val + 0)
                         .ok_or("cannot read hash bucket count")? as usize;
-                    nchain   = *self.get_ref::<Elf32_Word>(val + 4)
+                    nchain = *self
+                        .get_ref::<Elf32_Word>(val + 4)
                         .ok_or("cannot read hash chain count")? as usize;
                     hash_off = val + 8;
                     hash_sz = (nbucket + nchain) * mem::size_of::<Elf32_Word>();
                 }
-                _ => ()
+                _ => (),
             }
         }
 
@@ -123,28 +112,28 @@ impl Image {
         let symtab_sz = nchain * mem::size_of::<Elf32_Sym>();
 
         if strtab_off + strtab_sz > self.data.len() {
-            return Err("invalid strtab offset/size")?
+            return Err("invalid strtab offset/size")?;
         }
         if symtab_off + symtab_sz > self.data.len() {
-            return Err("invalid symtab offset/size")?
+            return Err("invalid symtab offset/size")?;
         }
         if sym_ent != mem::size_of::<Elf32_Sym>() {
-            return Err("incorrect symbol entry size")?
+            return Err("incorrect symbol entry size")?;
         }
         if rel_off + rel_sz > self.data.len() {
-            return Err("invalid rel offset/size")?
+            return Err("invalid rel offset/size")?;
         }
         if rel_ent != 0 && rel_ent != mem::size_of::<Elf32_Rel>() {
-            return Err("incorrect relocation entry size")?
+            return Err("incorrect relocation entry size")?;
         }
         if rela_off + rela_sz > self.data.len() {
-            return Err("invalid rela offset/size")?
+            return Err("invalid rela offset/size")?;
         }
         if rela_ent != 0 && rela_ent != mem::size_of::<Elf32_Rela>() {
-            return Err("incorrect relocation entry size")?
+            return Err("incorrect relocation entry size")?;
         }
         if pltrel_off + pltrel_sz > self.data.len() {
-            return Err("invalid pltrel offset/size")?
+            return Err("invalid pltrel offset/size")?;
         }
 
         Ok(DynamicSection {
@@ -165,7 +154,7 @@ impl Image {
 
     pub fn write(&self, offset: usize, value: Elf32_Word) -> Result<(), Error> {
         if offset + mem::size_of::<Elf32_Addr>() > self.data.len() {
-            return Err("relocation out of image bounds")?
+            return Err("relocation out of image bounds")?;
         }
 
         let ptr = (self.data.as_ptr() as usize + offset) as *mut Elf32_Addr;

src/libdyld/src/lib.rs

@@ -1,13 +1,14 @@
 #![no_std]
 
 extern crate alloc;
-extern crate log;
 extern crate libcortex_a9;
+extern crate log;
 
-use core::{convert, fmt, ops::Range, str};
 use alloc::string::String;
-use log::{debug, trace};
+use core::{convert, fmt, ops::Range, str};
+
 use elf::*;
+use log::{debug, trace};
 
 pub mod elf;
 mod file;
@@ -21,11 +22,10 @@ pub enum Arch {
     OpenRisc,
 }
 
-
 #[derive(Debug)]
 pub enum Error {
     Parsing(&'static str),
-    Lookup(String)
+    Lookup(String),
 }
 
 impl convert::From<&'static str> for Error {
@@ -37,10 +37,8 @@ impl convert::From<&'static str> for Error {
 impl fmt::Display for Error {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         match self {
-            &Error::Parsing(desc) =>
+            &Error::Parsing(desc) => write!(f, "parse error: {}", desc),
-                write!(f, "parse error: {}", desc),
+            &Error::Lookup(ref sym) => write!(f, "symbol lookup error: {}", sym),
-            &Error::Lookup(ref sym) =>
-                write!(f, "symbol lookup error: {}", sym),
         }
     }
 }
@@ -103,20 +101,22 @@ impl Library {
         let mut index = self.hash_bucket()[hash as usize % self.hash_bucket().len()] as usize;
 
         loop {
-            if index == STN_UNDEF { return None }
+            if index == STN_UNDEF {
+                return None;
+            }
 
             let sym = &self.symtab()[index];
             let sym_name_off = sym.st_name as usize;
             match self.strtab().get(sym_name_off..sym_name_off + name.len()) {
                 Some(sym_name) if sym_name == name => {
                     if ELF32_ST_BIND(sym.st_info) & STB_GLOBAL == 0 {
-                        return None
+                        return None;
                     }
 
                     match sym.st_shndx {
                         SHN_UNDEF => return None,
                         SHN_ABS => return Some(self.image.ptr() as u32 + sym.st_value),
-                        _ => return Some(self.image.ptr() as u32 + sym.st_value)
+                        _ => return Some(self.image.ptr() as u32 + sym.st_value),
                     }
                 }
                 _ => (),
@@ -127,9 +127,15 @@ impl Library {
     }
 
     pub fn name_starting_at(&self, offset: usize) -> Result<&[u8], Error> {
-        let size = self.strtab().iter().skip(offset).position(|&x| x == 0)
+        let size = self
+            .strtab()
+            .iter()
+            .skip(offset)
+            .position(|&x| x == 0)
             .ok_or("symbol in symbol table not null-terminated")?;
-        Ok(self.strtab().get(offset..offset + size)
+        Ok(self
+            .strtab()
+            .get(offset..offset + size)
             .ok_or("cannot read symbol name")?)
     }
 
@@ -143,53 +149,59 @@ impl Library {
     }
 }
 
-pub fn load(
+pub fn load(data: &[u8], resolve: &dyn Fn(&[u8]) -> Option<Elf32_Word>) -> Result<Library, Error> {
-    data: &[u8],
-    resolve: &dyn Fn(&[u8]) -> Option<Elf32_Word>
-) -> Result<Library, Error> {
     // validate ELF file
-    let file = file::File::new(data)
+    let file = file::File::new(data).ok_or("cannot read ELF header")?;
-        .ok_or("cannot read ELF header")?;
     if file.ehdr.e_type != ET_DYN {
-        return Err("not a shared library")?
+        return Err("not a shared library")?;
     }
-    let arch = file.arch()
+    let arch = file.arch().ok_or("not for a supported architecture")?;
-        .ok_or("not for a supported architecture")?;
 
     // prepare target memory
-    let image_size = file.program_headers()
+    let image_size = file
+        .program_headers()
         .filter_map(|phdr| phdr.map(|phdr| phdr.p_vaddr + phdr.p_memsz))
         .max()
         .unwrap_or(0) as usize;
-    let image_align = file.program_headers()
+    let image_align = file
-        .filter_map(|phdr| phdr.and_then(|phdr| {
+        .program_headers()
+        .filter_map(|phdr| {
+            phdr.and_then(|phdr| {
                 if phdr.p_type == PT_LOAD {
                     Some(phdr.p_align)
                 } else {
                     None
                 }
-        }))
+            })
+        })
         .max()
         .unwrap_or(4) as usize;
     // 1 image for all segments
-    let mut image = image::Image::new(image_size, image_align)
+    let mut image = image::Image::new(image_size, image_align).map_err(|_| "cannot allocate target image")?;
-        .map_err(|_| "cannot allocate target image")?;
+    debug!(
-    debug!("ELF target: {} bytes, align to {:X}, allocated at {:08X}", image_size, image_align, image.ptr() as usize);
+        "ELF target: {} bytes, align to {:X}, allocated at {:08X}",
+        image_size,
+        image_align,
+        image.ptr() as usize
+    );
 
     // LOAD
     for phdr in file.program_headers() {
         let phdr = phdr.ok_or("cannot read program header")?;
-        trace!("Program header: {:08X}+{:08X} to {:08X}",
+        trace!(
-              phdr.p_offset, phdr.p_filesz,
+            "Program header: {:08X}+{:08X} to {:08X}",
+            phdr.p_offset,
+            phdr.p_filesz,
             image.ptr() as u32
         );
         let file_range = phdr.p_offset as usize..(phdr.p_offset + phdr.p_filesz) as usize;
         match phdr.p_type {
             PT_LOAD => {
-                let src = file.get(file_range)
+                let src = file
+                    .get(file_range)
                     .ok_or("program header requests an out of bounds load (in file)")?;
-                let dst = image.get_mut(phdr.p_vaddr as usize..
+                let dst = image
-                                        (phdr.p_vaddr + phdr.p_filesz) as usize)
+                    .get_mut(phdr.p_vaddr as usize..(phdr.p_vaddr + phdr.p_filesz) as usize)
                     .ok_or("program header requests an out of bounds load (in target)")?;
                 dst.copy_from_slice(src);
             }
@@ -203,9 +215,9 @@ pub fn load(
         let shdr = shdr.ok_or("cannot read section header")?;
         match shdr.sh_type as usize {
             SHT_ARM_EXIDX => {
-                let range = shdr.sh_addr as usize..
+                let range = shdr.sh_addr as usize..(shdr.sh_addr + shdr.sh_size) as usize;
-                    (shdr.sh_addr + shdr.sh_size) as usize;
+                let _ = image
-                let _ = image.get(range.clone())
+                    .get(range.clone())
                     .ok_or("section header specifies EXIDX outside of image (in target)")?;
                 exidx = Some(range);
             }
@@ -214,11 +226,14 @@ pub fn load(
     }
 
     // relocate DYNAMIC
-    let dyn_range = file.dyn_header_vaddr()
+    let dyn_range = file.dyn_header_vaddr().ok_or("cannot find a dynamic header")?;
-        .ok_or("cannot find a dynamic header")?;
     let dyn_section = image.dyn_section(dyn_range.clone())?;
-    debug!("Relocating {} rela, {} rel, {} pltrel",
+    debug!(
-           dyn_section.rela.len(), dyn_section.rel.len(), dyn_section.pltrel.len());
+        "Relocating {} rela, {} rel, {} pltrel",
+        dyn_section.rela.len(),
+        dyn_section.rel.len(),
+        dyn_section.pltrel.len()
+    );
     let lib = Library {
         arch,
         image,

src/libdyld/src/reloc.rs

@@ -1,16 +1,10 @@
 use alloc::string::String;
+
+use libcortex_a9::{asm::{dsb, isb},
+                   cache::{bpiall, dcci_slice, iciallu}};
 use log::trace;
-use super::{
+
-    Arch,
+use super::{elf::*, image::Image, Arch, Error, Library};
-    elf::*,
-    Error,
-    image::Image,
-    Library,
-};
-use libcortex_a9::{
-    cache::{dcci_slice, iciallu, bpiall},
-    asm::{dsb, isb},
-};
 
 pub trait Relocatable {
     fn offset(&self) -> usize;
@@ -66,25 +60,18 @@ enum RelType {
 impl RelType {
     pub fn new(arch: Arch, type_info: u8) -> Option<Self> {
         match type_info {
-            R_OR1K_NONE if arch == Arch::OpenRisc =>
+            R_OR1K_NONE if arch == Arch::OpenRisc => Some(RelType::None),
-                Some(RelType::None),
+            R_ARM_NONE if arch == Arch::Arm => Some(RelType::None),
-            R_ARM_NONE if arch == Arch::Arm =>
-                Some(RelType::None),
 
-            R_OR1K_RELATIVE if arch == Arch::OpenRisc =>
+            R_OR1K_RELATIVE if arch == Arch::OpenRisc => Some(RelType::Relative),
-                Some(RelType::Relative),
+            R_ARM_RELATIVE if arch == Arch::Arm => Some(RelType::Relative),
-            R_ARM_RELATIVE if arch == Arch::Arm =>
-                Some(RelType::Relative),
 
-            R_OR1K_32 | R_OR1K_GLOB_DAT | R_OR1K_JMP_SLOT
+            R_OR1K_32 | R_OR1K_GLOB_DAT | R_OR1K_JMP_SLOT if arch == Arch::OpenRisc => Some(RelType::LookupAbs),
-                if arch == Arch::OpenRisc => Some(RelType::LookupAbs),
+            R_ARM_GLOB_DAT | R_ARM_JUMP_SLOT | R_ARM_ABS32 if arch == Arch::Arm => Some(RelType::LookupAbs),
-            R_ARM_GLOB_DAT | R_ARM_JUMP_SLOT | R_ARM_ABS32
-                if arch == Arch::Arm => Some(RelType::LookupAbs),
 
             R_ARM_PREL31 if arch == Arch::Arm => Some(RelType::LookupRel),
 
-            _ =>
+            _ => None,
-                None
         }
     }
 }
@@ -96,22 +83,25 @@ fn format_sym_name(sym_name: &[u8]) -> String {
 }
 
 pub fn relocate<R: Relocatable>(
-    arch: Arch, lib: &Library,
+    arch: Arch,
-    rel: &R, resolve: &dyn Fn(&[u8]) -> Option<Elf32_Word>
+    lib: &Library,
+    rel: &R,
+    resolve: &dyn Fn(&[u8]) -> Option<Elf32_Word>,
 ) -> Result<(), Error> {
     let sym;
     if rel.sym_info() == 0 {
         sym = None;
     } else {
-        sym = Some(lib.symtab().get(rel.sym_info() as usize)
+        sym = Some(
-                   .ok_or("symbol out of bounds of symbol table")?)
+            lib.symtab()
+                .get(rel.sym_info() as usize)
+                .ok_or("symbol out of bounds of symbol table")?,
+        )
     }
 
-    let rel_type = RelType::new(arch, rel.type_info())
+    let rel_type = RelType::new(arch, rel.type_info()).ok_or("unsupported relocation type")?;
-        .ok_or("unsupported relocation type")?;
     let value = match rel_type {
-        RelType::None =>
+        RelType::None => return Ok(()),
-            return Ok(()),
 
         RelType::Relative => {
             let addend = rel.addend(&lib.image);
@@ -132,42 +122,48 @@ pub fn relocate<R: Relocatable>(
                 addr
             } else {
                 // We couldn't find it anywhere.
-                return Err(Error::Lookup(format_sym_name(sym_name)))
+                return Err(Error::Lookup(format_sym_name(sym_name)));
             };
 
             match rel_type {
                 RelType::LookupAbs => sym_addr,
-                RelType::LookupRel =>
+                RelType::LookupRel => {
-                    sym_addr.wrapping_sub(
+                    sym_addr.wrapping_sub(lib.image.ptr().wrapping_offset(rel.offset() as isize) as Elf32_Addr)
-                        lib.image.ptr().wrapping_offset(rel.offset() as isize) as Elf32_Addr),
+                }
-                _ => unreachable!()
+                _ => unreachable!(),
             }
         }
     };
 
     match rel.type_info() {
         R_ARM_PREL31 => {
-            let reloc_word = lib.image.get_ref::<Elf32_Word>(rel.offset())
+            let reloc_word = lib
+                .image
+                .get_ref::<Elf32_Word>(rel.offset())
                 .ok_or("relocation offset cannot be read")?;
-            lib.image.write(rel.offset(), (reloc_word & 0x80000000) | (value & 0x7FFFFFFF))
+            lib.image
-        },
+                .write(rel.offset(), (reloc_word & 0x80000000) | (value & 0x7FFFFFFF))
+        }
 
         _ => lib.image.write(rel.offset(), value),
     }
 }
 
-pub fn rebind(
+pub fn rebind(arch: Arch, lib: &Library, name: &[u8], value: Elf32_Word) -> Result<(), Error> {
-    arch: Arch, lib: &Library, name: &[u8], value: Elf32_Word
-) -> Result<(), Error> {
     fn rebind_symbol_to_value<R: Relocatable>(
-        arch: Arch, lib: &Library,name: &[u8], value: Elf32_Word, relocs: &[R]
+        arch: Arch,
+        lib: &Library,
+        name: &[u8],
+        value: Elf32_Word,
+        relocs: &[R],
     ) -> Result<(), Error> {
         for reloc in relocs {
-            let rel_type = RelType::new(arch, reloc.type_info())
+            let rel_type = RelType::new(arch, reloc.type_info()).ok_or("unsupported relocation type")?;
-                .ok_or("unsupported relocation type")?;
             match rel_type {
                 RelType::LookupAbs => {
-                    let sym = lib.symtab().get(reloc.sym_info() as usize)
+                    let sym = lib
+                        .symtab()
+                        .get(reloc.sym_info() as usize)
                         .ok_or("symbol out of bounds of symbol table")?;
                     let sym_name = lib.name_starting_at(sym.st_name as usize)?;
 

src/libio/cursor.rs

@@ -1,9 +1,9 @@
-use core_io::{Read, Write, Error as IoError};
+use core_io::{Error as IoError, Read, Write};
 
 #[derive(Debug, Clone)]
 pub struct Cursor<T> {
     inner: T,
-    pos:   usize
+    pos: usize,
 }
 
 impl<T> Cursor<T> {
@@ -39,7 +39,6 @@ impl<T> Cursor<T> {
 }
 
 impl<T: AsRef<[u8]>> Read for Cursor<T> {
-
     fn read(&mut self, buf: &mut [u8]) -> Result<usize, IoError> {
         let data = &self.inner.as_ref()[self.pos..];
         let len = buf.len().min(data.len());
@@ -50,7 +49,6 @@ impl<T: AsRef<[u8]>> Read for Cursor<T> {
 }
 
 impl Write for Cursor<&mut [u8]> {
-
     fn write(&mut self, buf: &[u8]) -> Result<usize, IoError> {
         let data = &mut self.inner[self.pos..];
         let len = buf.len().min(data.len());
@@ -67,7 +65,6 @@ impl Write for Cursor<&mut [u8]> {
 
 #[cfg(feature = "alloc")]
 impl Write for Cursor<::alloc::Vec<u8>> {
-
     #[inline]
     fn write(&mut self, buf: &[u8]) -> Result<usize, IoError> {
         self.inner.extend_from_slice(buf);

src/libio/lib.rs

@@ -16,7 +16,7 @@ pub mod cursor;
 pub mod proto;
 
 pub use cursor::Cursor;
-#[cfg(feature = "byteorder")]
-pub use proto::{ProtoRead, ProtoWrite};
 #[cfg(all(feature = "byteorder", feature = "alloc"))]
 pub use proto::ReadStringError;
+#[cfg(feature = "byteorder")]
+pub use proto::{ProtoRead, ProtoWrite};

src/libio/proto.rs

@@ -1,15 +1,14 @@
+use alloc::{string::String, vec};
 use core::str::Utf8Error;
-use byteorder::{ByteOrder, NativeEndian};
-use alloc::vec;
-use alloc::string::String;
 
-use core_io::{Read, Write, Error as IoError};
+use byteorder::{ByteOrder, NativeEndian};
+use core_io::{Error as IoError, Read, Write};
 
 #[allow(dead_code)]
 #[derive(Debug, Clone, PartialEq)]
 pub enum ReadStringError<T> {
     Utf8(Utf8Error),
-    Other(T)
+    Other(T),
 }
 
 pub trait ProtoRead {
@@ -141,7 +140,9 @@ pub trait ProtoWrite {
     }
 }
 
-impl<T> ProtoRead for T where T: Read + ?Sized {
+impl<T> ProtoRead for T
+where T: Read + ?Sized
+{
     type ReadError = IoError;
 
     fn read_exact(&mut self, buf: &mut [u8]) -> Result<(), Self::ReadError> {
@@ -149,7 +150,9 @@ impl<T> ProtoRead for T where T: Read + ?Sized {
     }
 }
 
-impl<T> ProtoWrite for T where T: Write + ?Sized {
+impl<T> ProtoWrite for T
+where T: Write + ?Sized
+{
     type WriteError = IoError;
 
     fn write_all(&mut self, buf: &[u8]) -> Result<(), Self::WriteError> {

src/libunwind/backtrace.rs

@@ -1,27 +1,25 @@
-use libc::{c_void, c_int};
+use libc::{c_int, c_void};
+
 use crate::libunwind as uw;
 
 const UW_REG_SP: c_int = 13;
 
 pub fn backtrace<F>(f: F) -> Result<(), uw::_Unwind_Reason_Code>
-    where F: FnMut(usize) -> ()
+where F: FnMut(usize) -> () {
-{
     struct TraceContext<F> {
         step_fn: F,
-        prev_sp: uw::_Unwind_Word
+        prev_sp: uw::_Unwind_Word,
     }
 
-    extern fn trace<F>(context: *mut uw::_Unwind_Context, arg: *mut c_void)
+    extern "C" fn trace<F>(context: *mut uw::_Unwind_Context, arg: *mut c_void) -> uw::_Unwind_Reason_Code
-                      -> uw::_Unwind_Reason_Code
+    where F: FnMut(usize) -> () {
-        where F: FnMut(usize) -> ()
-    {
         unsafe {
             let trace_context = &mut *(arg as *mut TraceContext<F>);
 
             // Detect the root of a libfringe thread
             let cur_sp = uw::_Unwind_GetGR(context, UW_REG_SP);
             if cur_sp == trace_context.prev_sp {
-                return uw::_URC_END_OF_STACK
+                return uw::_URC_END_OF_STACK;
             } else {
                 trace_context.prev_sp = cur_sp;
             }
@@ -35,7 +33,7 @@ pub fn backtrace<F>(f: F) -> Result<(), uw::_Unwind_Reason_Code>
         let mut trace_context = TraceContext { step_fn: f, prev_sp: 0 };
         match uw::_Unwind_Backtrace(trace::<F>, &mut trace_context as *mut _ as *mut c_void) {
             uw::_URC_NO_REASON => Ok(()),
-            err => Err(err)
+            err => Err(err),
         }
     }
 }

src/libunwind/build.rs

@@ -5,8 +5,7 @@ fn main() {
 }
 
 mod llvm_libunwind {
-    use std::path::Path;
+    use std::{env, path::Path};
-    use std::env;
 
     fn setup_options(cfg: &mut cc::Build) {
         cfg.no_default_flags(true);
@@ -82,11 +81,7 @@ mod llvm_libunwind {
         cfg.flag("-fvisibility=hidden");
         cfg.flag_if_supported("-fvisibility-global-new-delete-hidden");
 
-        let unwind_sources = vec![
+        let unwind_sources = vec!["Unwind-EHABI.cpp", "Unwind-seh.cpp", "libunwind.cpp"];
-            "Unwind-EHABI.cpp",
-            "Unwind-seh.cpp",
-            "libunwind.cpp"
-        ];
 
         let root = Path::new("../llvm_libunwind");
         cfg.include(root.join("include"));

src/libunwind/libunwind.rs

@@ -21,8 +21,7 @@ pub use _Unwind_Reason_Code::*;
 pub type _Unwind_Exception_Class = u64;
 pub type _Unwind_Word = uintptr_t;
 pub type _Unwind_Ptr = uintptr_t;
-pub type _Unwind_Trace_Fn =
+pub type _Unwind_Trace_Fn = extern "C" fn(ctx: *mut _Unwind_Context, arg: *mut c_void) -> _Unwind_Reason_Code;
-    extern "C" fn(ctx: *mut _Unwind_Context, arg: *mut c_void) -> _Unwind_Reason_Code;
 
 #[cfg(target_arch = "x86")]
 pub const unwinder_private_data_size: usize = 5;
@@ -279,7 +278,6 @@ if #[cfg(all(windows, target_arch = "x86_64", target_env = "gnu"))] {
 } // cfg_if!
 
 #[no_mangle]
-extern fn abort() {
+extern "C" fn abort() {
     panic!("Abort!");
 }
-

src/runtime/src/analyzer.rs

@@ -3,8 +3,7 @@ use libboard_zynq::smoltcp::Error;
 use libcortex_a9::cache;
 use log::{debug, info, warn};
 
-use crate::proto_async::*;
+use crate::{pl, proto_async::*};
-use crate::pl;
 
 const BUFFER_SIZE: usize = 512 * 1024;
 
@@ -13,9 +12,7 @@ struct Buffer {
     data: [u8; BUFFER_SIZE],
 }
 
-static mut BUFFER: Buffer = Buffer {
+static mut BUFFER: Buffer = Buffer { data: [0; BUFFER_SIZE] };
-    data: [0; BUFFER_SIZE]
-};
 
 fn arm() {
     debug!("arming RTIO analyzer");
@@ -46,7 +43,7 @@ struct Header {
     total_byte_count: u64,
     error_occurred: bool,
     log_channel: u8,
-    dds_onehot_sel: bool
+    dds_onehot_sel: bool,
 }
 
 async fn write_header(stream: &mut TcpStream, header: &Header) -> Result<(), Error> {
@@ -78,10 +75,14 @@ async fn handle_connection(stream: &mut TcpStream) -> Result<(), Error> {
 
     let header = Header {
         total_byte_count: total_byte_count,
-        sent_bytes: if wraparound { BUFFER_SIZE as u32 } else { total_byte_count as u32 },
+        sent_bytes: if wraparound {
+            BUFFER_SIZE as u32
+        } else {
+            total_byte_count as u32
+        },
         error_occurred: overflow_occurred | bus_error_occurred,
         log_channel: pl::csr::CONFIG_RTIO_LOG_CHANNEL as u8,
-        dds_onehot_sel: true  // kept for backward compatibility of analyzer dumps
+        dds_onehot_sel: true, // kept for backward compatibility of analyzer dumps
     };
     debug!("{:?}", header);
 

src/runtime/src/comms.rs

@@ -1,39 +1,33 @@
-use core::{fmt, slice, str};
+use alloc::{collections::BTreeMap, rc::Rc, string::String, vec, vec::Vec};
-use core::cell::RefCell;
+use core::{cell::RefCell, fmt, slice, str};
-use alloc::{vec, vec::Vec, string::String, collections::BTreeMap, rc::Rc};
+
-use log::{info, warn, error};
 use cslice::CSlice;
-
+use futures::{future::FutureExt, select_biased};
-use num_derive::{FromPrimitive, ToPrimitive};
+use libasync::{smoltcp::{Sockets, TcpStream},
-use num_traits::{FromPrimitive, ToPrimitive};
+               task};
-
-use libboard_zynq::{
-    self as zynq,
-    smoltcp::{
-        self,
-        wire::IpCidr,
-        iface::{NeighborCache, EthernetInterfaceBuilder},
-        time::Instant,
-    },
-    timer::GlobalTimer,
-};
-use libcortex_a9::{semaphore::Semaphore, mutex::Mutex, sync_channel::{Sender, Receiver}};
-use futures::{select_biased, future::FutureExt};
-use libasync::{smoltcp::{Sockets, TcpStream}, task};
-use libconfig::{Config, net_settings};
 use libboard_artiq::drtio_routing;
 #[cfg(feature = "target_kasli_soc")]
 use libboard_zynq::error_led::ErrorLED;
+use libboard_zynq::{self as zynq,
+                    smoltcp::{self,
+                              iface::{EthernetInterfaceBuilder, NeighborCache},
+                              time::Instant,
+                              wire::IpCidr},
+                    timer::GlobalTimer};
+use libconfig::{net_settings, Config};
+use libcortex_a9::{mutex::Mutex,
+                   semaphore::Semaphore,
+                   sync_channel::{Receiver, Sender}};
+use log::{error, info, warn};
+use num_derive::{FromPrimitive, ToPrimitive};
+use num_traits::{FromPrimitive, ToPrimitive};
 
-use crate::proto_async::*;
-use crate::kernel;
-use crate::rpc;
-use crate::moninj;
-use crate::mgmt;
-use crate::analyzer;
-use crate::rtio_mgt::{self, resolve_channel_name};
 #[cfg(has_drtio)]
 use crate::pl;
+use crate::{analyzer, kernel, mgmt, moninj,
+            proto_async::*,
+            rpc,
+            rtio_mgt::{self, resolve_channel_name}};
 
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub enum Error {
@@ -88,15 +82,16 @@ static CACHE_STORE: Mutex<BTreeMap<String, Vec<i32>>> = Mutex::new(BTreeMap::new
 static DMA_RECORD_STORE: Mutex<BTreeMap<String, (Vec<u8>, i64)>> = Mutex::new(BTreeMap::new());
 
 async fn write_header(stream: &TcpStream, reply: Reply) -> Result<()> {
-    stream.send_slice(&[0x5a, 0x5a, 0x5a, 0x5a, reply.to_u8().unwrap()]).await?;
+    stream
+        .send_slice(&[0x5a, 0x5a, 0x5a, 0x5a, reply.to_u8().unwrap()])
+        .await?;
     Ok(())
 }
 
 async fn read_request(stream: &TcpStream, allow_close: bool) -> Result<Option<Request>> {
     match expect(stream, &[0x5a, 0x5a, 0x5a, 0x5a]).await {
         Ok(true) => {}
-        Ok(false) =>
+        Ok(false) => return Err(Error::UnexpectedPattern),
-            return Err(Error::UnexpectedPattern),
         Err(smoltcp::Error::Finished) => {
             if allow_close {
                 info!("peer closed connection");
@@ -105,11 +100,12 @@ async fn read_request(stream: &TcpStream, allow_close: bool) -> Result<Option<Re
                 error!("peer unexpectedly closed connection");
                 return Err(smoltcp::Error::Finished)?;
             }
-        },
-        Err(e) =>
-            return Err(e)?,
         }
-    Ok(Some(FromPrimitive::from_i8(read_i8(&stream).await?).ok_or(Error::UnrecognizedPacket)?))
+        Err(e) => return Err(e)?,
+    }
+    Ok(Some(
+        FromPrimitive::from_i8(read_i8(&stream).await?).ok_or(Error::UnrecognizedPacket)?,
+    ))
 }
 
 async fn read_bytes(stream: &TcpStream, max_length: usize) -> Result<Vec<u8>> {
@@ -128,9 +124,7 @@ async fn fast_send(sender: &mut Sender<'_, kernel::Message>, content: kernel::Me
     let mut content = content;
     for _ in 0..RETRY_LIMIT {
         match sender.try_send(content) {
-            Ok(()) => {
+            Ok(()) => return,
-                return
-            },
             Err(v) => {
                 content = v;
             }
@@ -142,10 +136,8 @@ async fn fast_send(sender: &mut Sender<'_, kernel::Message>, content: kernel::Me
 async fn fast_recv(receiver: &mut Receiver<'_, kernel::Message>) -> kernel::Message {
     for _ in 0..RETRY_LIMIT {
         match receiver.try_recv() {
-            Ok(v) => {
+            Ok(v) => return v,
-                return v;
+            Err(()) => (),
-            },
-            Err(()) => ()
         }
     }
     receiver.async_recv().await
@@ -161,7 +153,11 @@ async fn write_exception_string(stream: &TcpStream, s: CSlice<'static, u8>) -> R
     Ok(())
 }
 
-async fn handle_run_kernel(stream: Option<&TcpStream>, control: &Rc<RefCell<kernel::Control>>, _up_destinations: &Rc<RefCell<[bool; drtio_routing::DEST_COUNT]>>) -> Result<()> {
+async fn handle_run_kernel(
+    stream: Option<&TcpStream>,
+    control: &Rc<RefCell<kernel::Control>>,
+    _up_destinations: &Rc<RefCell<[bool; drtio_routing::DEST_COUNT]>>,
+) -> Result<()> {
     control.borrow_mut().tx.async_send(kernel::Message::StartRequest).await;
     loop {
         let reply = control.borrow_mut().rx.async_recv().await;
@@ -169,7 +165,7 @@ async fn handle_run_kernel(stream: Option<&TcpStream>, control: &Rc<RefCell<kern
             kernel::Message::RpcSend { is_async, data } => {
                 if stream.is_none() {
                     error!("Unexpected RPC from startup/idle kernel!");
-                    break
+                    break;
                 }
                 let stream = stream.unwrap();
                 write_header(stream, Reply::RPCRequest).await?;
@@ -196,13 +192,20 @@ async fn handle_run_kernel(stream: Option<&TcpStream>, control: &Rc<RefCell<kern
                                         fast_send(&mut control.tx, kernel::Message::RpcRecvReply(Ok(size))).await;
                                         match fast_recv(&mut control.rx).await {
                                             kernel::Message::RpcRecvRequest(slot) => slot,
-                                            other => panic!("expected nested value slot from kernel CPU, not {:?}", other),
+                                            other => {
+                                                panic!("expected nested value slot from kernel CPU, not {:?}", other)
                                             }
                                         }
                                     }
-                            }).await?;
+                                }
-                            control.borrow_mut().tx.async_send(kernel::Message::RpcRecvReply(Ok(0))).await;
+                            })
-                        },
+                            .await?;
+                            control
+                                .borrow_mut()
+                                .tx
+                                .async_send(kernel::Message::RpcRecvReply(Ok(0)))
+                                .await;
+                        }
                         Request::RPCException => {
                             let mut control = control.borrow_mut();
                             match control.rx.async_recv().await {
@@ -211,31 +214,42 @@ async fn handle_run_kernel(stream: Option<&TcpStream>, control: &Rc<RefCell<kern
                             }
                             let id = read_i32(stream).await? as u32;
                             let message = read_i32(stream).await? as u32;
-                            let param =    [read_i64(stream).await?,
+                            let param = [
                                 read_i64(stream).await?,
-                                            read_i64(stream).await?];
+                                read_i64(stream).await?,
+                                read_i64(stream).await?,
+                            ];
                             let file = read_i32(stream).await? as u32;
                             let line = read_i32(stream).await?;
                             let column = read_i32(stream).await?;
                             let function = read_i32(stream).await? as u32;
-                            control.tx.async_send(kernel::Message::RpcRecvReply(Err(kernel::RPCException {
+                            control
-                                id, message, param, file, line, column, function
+                                .tx
-                            }))).await;
+                                .async_send(kernel::Message::RpcRecvReply(Err(kernel::RPCException {
-                        },
+                                    id,
+                                    message,
+                                    param,
+                                    file,
+                                    line,
+                                    column,
+                                    function,
+                                })))
+                                .await;
+                        }
                         _ => {
                             error!("unexpected RPC request from host: {:?}", host_request);
-                            return Err(Error::UnrecognizedPacket)
+                            return Err(Error::UnrecognizedPacket);
+                        }
                     }
                 }
             }
-            },
             kernel::Message::KernelFinished(async_errors) => {
                 if let Some(stream) = stream {
                     write_header(stream, Reply::KernelFinished).await?;
                     write_i8(stream, async_errors as i8).await?;
                 }
                 break;
-            },
+            }
             kernel::Message::KernelException(exceptions, stack_pointers, backtrace, async_errors) => {
                 match stream {
                     Some(stream) => {
@@ -247,12 +261,22 @@ async fn handle_run_kernel(stream: Option<&TcpStream>, control: &Rc<RefCell<kern
                             let exception = exception.as_ref().unwrap();
                             write_i32(stream, exception.id as i32).await?;
 
-                            if exception.message.len() == usize::MAX { // exception with host string
+                            if exception.message.len() == usize::MAX {
+                                // exception with host string
                                 write_exception_string(stream, exception.message).await?;
                             } else {
-                                let msg = str::from_utf8(unsafe { slice::from_raw_parts(exception.message.as_ptr(), exception.message.len()) })
+                                let msg = str::from_utf8(unsafe {
+                                    slice::from_raw_parts(exception.message.as_ptr(), exception.message.len())
+                                })
                                 .unwrap()
-                                    .replace("{rtio_channel_info:0}", &format!("0x{:04x}:{}", exception.param[0], resolve_channel_name(exception.param[0] as u32)));
+                                .replace(
+                                    "{rtio_channel_info:0}",
+                                    &format!(
+                                        "0x{:04x}:{}",
+                                        exception.param[0],
+                                        resolve_channel_name(exception.param[0] as u32)
+                                    ),
+                                );
                                 write_exception_string(stream, unsafe { CSlice::new(msg.as_ptr(), msg.len()) }).await?;
                             }
 
@@ -275,7 +299,7 @@ async fn handle_run_kernel(stream: Option<&TcpStream>, control: &Rc<RefCell<kern
                             write_i32(stream, sp as i32).await?;
                         }
                         write_i8(stream, async_errors as i8).await?;
-                    },
+                    }
                     None => {
                         error!("Uncaught kernel exceptions: {:?}", exceptions);
                     }
@@ -284,27 +308,41 @@ async fn handle_run_kernel(stream: Option<&TcpStream>, control: &Rc<RefCell<kern
             }
             kernel::Message::CachePutRequest(key, value) => {
                 CACHE_STORE.lock().insert(key, value);
-            },
+            }
             kernel::Message::CacheGetRequest(key) => {
                 const DEFAULT: Vec<i32> = Vec::new();
                 let value = CACHE_STORE.lock().get(&key).unwrap_or(&DEFAULT).clone();
-                control.borrow_mut().tx.async_send(kernel::Message::CacheGetReply(value)).await;
+                control
-            },
+                    .borrow_mut()
+                    .tx
+                    .async_send(kernel::Message::CacheGetReply(value))
+                    .await;
+            }
             kernel::Message::DmaPutRequest(recorder) => {
-                DMA_RECORD_STORE.lock().insert(recorder.name, (recorder.buffer, recorder.duration));
+                DMA_RECORD_STORE
-            },
+                    .lock()
+                    .insert(recorder.name, (recorder.buffer, recorder.duration));
+            }
             kernel::Message::DmaEraseRequest(name) => {
                 // prevent possible OOM when we have large DMA record replacement.
                 DMA_RECORD_STORE.lock().remove(&name);
-            },
+            }
             kernel::Message::DmaGetRequest(name) => {
                 let result = DMA_RECORD_STORE.lock().get(&name).map(|v| v.clone());
-                control.borrow_mut().tx.async_send(kernel::Message::DmaGetReply(result)).await;
+                control
-            },
+                    .borrow_mut()
+                    .tx
+                    .async_send(kernel::Message::DmaGetReply(result))
+                    .await;
+            }
             #[cfg(has_drtio)]
             kernel::Message::UpDestinationsRequest(destination) => {
                 let result = _up_destinations.borrow()[destination as usize];
-                control.borrow_mut().tx.async_send(kernel::Message::UpDestinationsReply(result)).await;
+                control
+                    .borrow_mut()
+                    .tx
+                    .async_send(kernel::Message::UpDestinationsReply(result))
+                    .await;
             }
             _ => {
                 panic!("unexpected message from core1 while kernel was running: {:?}", reply);
@@ -314,11 +352,17 @@ async fn handle_run_kernel(stream: Option<&TcpStream>, control: &Rc<RefCell<kern
     Ok(())
 }
 
-
+async fn load_kernel(
-async fn load_kernel(buffer: &Vec<u8>, control: &Rc<RefCell<kernel::Control>>, stream: Option<&TcpStream>) -> Result<()> {
+    buffer: &Vec<u8>,
+    control: &Rc<RefCell<kernel::Control>>,
+    stream: Option<&TcpStream>,
+) -> Result<()> {
     let mut control = control.borrow_mut();
     control.restart();
-    control.tx.async_send(kernel::Message::LoadRequest(buffer.to_vec())).await;
+    control
+        .tx
+        .async_send(kernel::Message::LoadRequest(buffer.to_vec()))
+        .await;
     let reply = control.rx.async_recv().await;
     match reply {
         kernel::Message::LoadCompleted => {
@@ -326,7 +370,7 @@ async fn load_kernel(buffer: &Vec<u8>, control: &Rc<RefCell<kernel::Control>>, s
                 write_header(stream, Reply::LoadCompleted).await?;
             }
             Ok(())
-        },
+        }
         kernel::Message::LoadFailed => {
             if let Some(stream) = stream {
                 write_header(stream, Reply::LoadFailed).await?;
@@ -335,7 +379,7 @@ async fn load_kernel(buffer: &Vec<u8>, control: &Rc<RefCell<kernel::Control>>, s
                 error!("Kernel load failed");
             }
             Err(Error::UnexpectedPattern)
-        },
+        }
         _ => {
             error!("unexpected message from core1: {:?}", reply);
             if let Some(stream) = stream {
@@ -347,7 +391,11 @@ async fn load_kernel(buffer: &Vec<u8>, control: &Rc<RefCell<kernel::Control>>, s
     }
 }
 
-async fn handle_connection(stream: &mut TcpStream, control: Rc<RefCell<kernel::Control>>, up_destinations: &Rc<RefCell<[bool; drtio_routing::DEST_COUNT]>>) -> Result<()> {
+async fn handle_connection(
+    stream: &mut TcpStream,
+    control: Rc<RefCell<kernel::Control>>,
+    up_destinations: &Rc<RefCell<[bool; drtio_routing::DEST_COUNT]>>,
+) -> Result<()> {
     stream.set_ack_delay(None);
 
     if !expect(stream, b"ARTIQ coredev\n").await? {
@@ -364,17 +412,17 @@ async fn handle_connection(stream: &mut TcpStream, control: Rc<RefCell<kernel::C
             Request::SystemInfo => {
                 write_header(stream, Reply::SystemInfo).await?;
                 stream.send_slice("ARZQ".as_bytes()).await?;
-            },
+            }
             Request::LoadKernel => {
-                let buffer = read_bytes(stream, 1024*1024).await?;
+                let buffer = read_bytes(stream, 1024 * 1024).await?;
                 load_kernel(&buffer, &control, Some(stream)).await?;
-            },
+            }
             Request::RunKernel => {
                 handle_run_kernel(Some(stream), &control, &up_destinations).await?;
-            },
+            }
             _ => {
                 error!("unexpected request from host: {:?}", request);
-                return Err(Error::UnrecognizedPacket)
+                return Err(Error::UnrecognizedPacket);
             }
         }
     }
@@ -398,7 +446,7 @@ pub fn main(timer: GlobalTimer, cfg: Config) {
             let ip_addrs = [
                 IpCidr::new(net_addresses.ipv4_addr, 0),
                 IpCidr::new(net_addresses.ipv6_ll_addr, 0),
-                IpCidr::new(addr, 0)
+                IpCidr::new(addr, 0),
             ];
             EthernetInterfaceBuilder::new(&mut eth)
                 .ethernet_addr(net_addresses.hardware_addr)
@@ -409,7 +457,7 @@ pub fn main(timer: GlobalTimer, cfg: Config) {
         None => {
             let ip_addrs = [
                 IpCidr::new(net_addresses.ipv4_addr, 0),
-                IpCidr::new(net_addresses.ipv6_ll_addr, 0)
+                IpCidr::new(net_addresses.ipv6_ll_addr, 0),
             ];
             EthernetInterfaceBuilder::new(&mut eth)
                 .ethernet_addr(net_addresses.hardware_addr)
@@ -424,8 +472,10 @@ pub fn main(timer: GlobalTimer, cfg: Config) {
     // before, mutex was on io, but now that io isn't used...?
     let aux_mutex: Rc<Mutex<bool>> = Rc::new(Mutex::new(false));
     #[cfg(has_drtio)]
-    let drtio_routing_table = Rc::new(RefCell::new(
+    let drtio_routing_table = Rc::new(RefCell::new(drtio_routing::config_routing_table(
-        drtio_routing::config_routing_table(pl::csr::DRTIO.len(), &cfg)));
+        pl::csr::DRTIO.len(),
+        &cfg,
+    )));
     #[cfg(not(has_drtio))]
     let drtio_routing_table = Rc::new(RefCell::new(drtio_routing::RoutingTable::default_empty()));
     let up_destinations = Rc::new(RefCell::new([false; drtio_routing::DEST_COUNT]));
@@ -497,14 +547,10 @@ pub fn main(timer: GlobalTimer, cfg: Config) {
         }
     });
 
-    Sockets::run(&mut iface, || {
+    Sockets::run(&mut iface, || Instant::from_millis(timer.get_time().0 as i32));
-        Instant::from_millis(timer.get_time().0 as i32)
-    });
 }
 
-
 pub fn soft_panic_main(timer: GlobalTimer, cfg: Config) -> ! {
-
     let net_addresses = net_settings::get_addresses(&cfg);
     info!("network addresses: {}", net_addresses);
 
@@ -522,7 +568,7 @@ pub fn soft_panic_main(timer: GlobalTimer, cfg: Config) -> ! {
             let ip_addrs = [
                 IpCidr::new(net_addresses.ipv4_addr, 0),
                 IpCidr::new(net_addresses.ipv6_ll_addr, 0),
-                IpCidr::new(addr, 0)
+                IpCidr::new(addr, 0),
             ];
             EthernetInterfaceBuilder::new(&mut eth)
                 .ethernet_addr(net_addresses.hardware_addr)
@@ -533,7 +579,7 @@ pub fn soft_panic_main(timer: GlobalTimer, cfg: Config) -> ! {
         None => {
             let ip_addrs = [
                 IpCidr::new(net_addresses.ipv4_addr, 0),
-                IpCidr::new(net_addresses.ipv6_ll_addr, 0)
+                IpCidr::new(net_addresses.ipv6_ll_addr, 0),
             ];
             EthernetInterfaceBuilder::new(&mut eth)
                 .ethernet_addr(net_addresses.hardware_addr)
@@ -555,7 +601,5 @@ pub fn soft_panic_main(timer: GlobalTimer, cfg: Config) -> ! {
         err_led.toggle(true);
     }
 
-    Sockets::run(&mut iface, || {
+    Sockets::run(&mut iface, || Instant::from_millis(timer.get_time().0 as i32));
-        Instant::from_millis(timer.get_time().0 as i32)
-    });
 }

src/runtime/src/eh_artiq.rs

@@ -13,14 +13,14 @@
 #![allow(non_camel_case_types)]
 
 use core::mem;
+
 use cslice::CSlice;
-use unwind as uw;
-use libc::{c_int, c_void, uintptr_t};
-use log::{trace, error};
-use crate::kernel::KERNEL_IMAGE;
-
 use dwarf::eh::{self, EHAction, EHContext};
+use libc::{c_int, c_void, uintptr_t};
+use log::{error, trace};
+use unwind as uw;
 
+use crate::kernel::KERNEL_IMAGE;
 
 const EXCEPTION_CLASS: uw::_Unwind_Exception_Class = 0x4d_4c_42_53_41_52_54_51; /* 'MLBSARTQ' */
 
@@ -38,7 +38,7 @@ pub struct Exception<'a> {
     pub column: u32,
     pub function: CSlice<'a, u8>,
     pub message: CSlice<'a, u8>,
-    pub param:    [i64; 3]
+    pub param: [i64; 3],
 }
 
 fn str_err(_: core::str::Utf8Error) -> core::fmt::Error {
@@ -55,12 +55,16 @@ fn exception_str<'a>(s: &'a CSlice<'a, u8>) -> Result<&'a str, core::str::Utf8Er
 
 impl<'a> core::fmt::Debug for Exception<'a> {
     fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
-        write!(f, "Exception {} from {} in {}:{}:{}, message: {}",
+        write!(
+            f,
+            "Exception {} from {} in {}:{}:{}, message: {}",
             self.id,
             exception_str(&self.function).map_err(str_err)?,
             exception_str(&self.file).map_err(str_err)?,
-            self.line, self.column,
+            self.line,
-            exception_str(&self.message).map_err(str_err)?)
+            self.column,
+            exception_str(&self.message).map_err(str_err)?
+        )
     }
 }
 
@@ -102,12 +106,12 @@ static mut EXCEPTION_BUFFER: ExceptionBuffer = ExceptionBuffer {
     stack_pointers: [StackPointerBacktrace {
         stack_pointer: 0,
         initial_backtrace_size: 0,
-        current_backtrace_size: 0
+        current_backtrace_size: 0,
     }; MAX_INFLIGHT_EXCEPTIONS + 1],
-    exception_count: 0
+    exception_count: 0,
 };
 
-pub unsafe extern fn reset_exception_buffer() {
+pub unsafe extern "C" fn reset_exception_buffer() {
     trace!("reset exception buffer");
     EXCEPTION_BUFFER.uw_exceptions = [uw::_Unwind_Exception {
         exception_class: EXCEPTION_CLASS,
@@ -120,26 +124,25 @@ pub unsafe extern fn reset_exception_buffer() {
     EXCEPTION_BUFFER.exception_count = 0;
 }
 
-type _Unwind_Stop_Fn = extern "C" fn(version: c_int,
+type _Unwind_Stop_Fn = extern "C" fn(
+    version: c_int,
     actions: i32,
     exception_class: uw::_Unwind_Exception_Class,
     exception_object: *mut uw::_Unwind_Exception,
     context: *mut uw::_Unwind_Context,
-                                     stop_parameter: *mut c_void)
+    stop_parameter: *mut c_void,
-                                    -> uw::_Unwind_Reason_Code;
+) -> uw::_Unwind_Reason_Code;
 
-extern {
+extern "C" {
     // not defined in EHABI, but LLVM added it and is useful to us
-    fn _Unwind_ForcedUnwind(exception: *mut uw::_Unwind_Exception,
+    fn _Unwind_ForcedUnwind(
+        exception: *mut uw::_Unwind_Exception,
         stop_fn: _Unwind_Stop_Fn,
-                            stop_parameter: *mut c_void) -> uw::_Unwind_Reason_Code;
+        stop_parameter: *mut c_void,
+    ) -> uw::_Unwind_Reason_Code;
 }
 
-unsafe fn find_eh_action(
+unsafe fn find_eh_action(context: *mut uw::_Unwind_Context, foreign_exception: bool, id: u32) -> Result<EHAction, ()> {
-    context: *mut uw::_Unwind_Context,
-    foreign_exception: bool,
-    id: u32,
-) -> Result<EHAction, ()> {
     let lsda = uw::_Unwind_GetLanguageSpecificData(context) as *const u8;
     let mut ip_before_instr: c_int = 0;
     let ip = uw::_Unwind_GetIPInfo(context, &mut ip_before_instr);
@@ -154,10 +157,11 @@ unsafe fn find_eh_action(
     eh::find_eh_action(lsda, &eh_context, foreign_exception, id)
 }
 
-pub unsafe fn artiq_personality(_state: uw::_Unwind_State,
+pub unsafe fn artiq_personality(
+    _state: uw::_Unwind_State,
     exception_object: *mut uw::_Unwind_Exception,
-                                context: *mut uw::_Unwind_Context)
+    context: *mut uw::_Unwind_Context,
-                                -> uw::_Unwind_Reason_Code {
+) -> uw::_Unwind_Reason_Code {
     // we will only do phase 2 forced unwinding now
     // The DWARF unwinder assumes that _Unwind_Context holds things like the function
     // and LSDA pointers, however ARM EHABI places them into the exception object.
@@ -165,9 +169,7 @@ pub unsafe fn artiq_personality(_state: uw::_Unwind_State,
     // take only the context pointer, GCC personality routines stash a pointer to
     // exception_object in the context, using location reserved for ARM's
     // "scratch register" (r12).
-    uw::_Unwind_SetGR(context,
+    uw::_Unwind_SetGR(context, uw::UNWIND_POINTER_REG, exception_object as uw::_Unwind_Ptr);
-                      uw::UNWIND_POINTER_REG,
-                      exception_object as uw::_Unwind_Ptr);
     // ...A more principled approach would be to provide the full definition of ARM's
     // _Unwind_Context in our libunwind bindings and fetch the required data from there
     // directly, bypassing DWARF compatibility functions.
@@ -186,10 +188,8 @@ pub unsafe fn artiq_personality(_state: uw::_Unwind_State,
     };
     match eh_action {
         EHAction::None => return continue_unwind(exception_object, context),
-        EHAction::Cleanup(lpad) |
+        EHAction::Cleanup(lpad) | EHAction::Catch(lpad) => {
-        EHAction::Catch(lpad) => {
+            uw::_Unwind_SetGR(context, UNWIND_DATA_REG.0, exception_object as uintptr_t);
-            uw::_Unwind_SetGR(context, UNWIND_DATA_REG.0,
-                              exception_object as uintptr_t);
             uw::_Unwind_SetGR(context, UNWIND_DATA_REG.1, exception as *const _ as uw::_Unwind_Word);
             uw::_Unwind_SetIP(context, lpad);
             return uw::_URC_INSTALL_CONTEXT;
@@ -199,9 +199,10 @@ pub unsafe fn artiq_personality(_state: uw::_Unwind_State,
 
     // On ARM EHABI the personality routine is responsible for actually
     // unwinding a single stack frame before returning (ARM EHABI Sec. 6.1).
-    unsafe fn continue_unwind(exception_object: *mut uw::_Unwind_Exception,
+    unsafe fn continue_unwind(
-                              context: *mut uw::_Unwind_Context)
+        exception_object: *mut uw::_Unwind_Exception,
-                              -> uw::_Unwind_Reason_Code {
+        context: *mut uw::_Unwind_Context,
+    ) -> uw::_Unwind_Reason_Code {
         let reason = __gnu_unwind_frame(exception_object, context);
         if reason == uw::_URC_NO_REASON {
             uw::_URC_CONTINUE_UNWIND
@@ -211,13 +212,14 @@ pub unsafe fn artiq_personality(_state: uw::_Unwind_State,
     }
     // defined in libgcc
     extern "C" {
-        fn __gnu_unwind_frame(exception_object: *mut uw::_Unwind_Exception,
+        fn __gnu_unwind_frame(
-                              context: *mut uw::_Unwind_Context)
+            exception_object: *mut uw::_Unwind_Exception,
-                              -> uw::_Unwind_Reason_Code;
+            context: *mut uw::_Unwind_Context,
+        ) -> uw::_Unwind_Reason_Code;
     }
 }
 
-pub unsafe extern fn raise(exception: *const Exception) -> ! {
+pub unsafe extern "C" fn raise(exception: *const Exception) -> ! {
     use cslice::AsCSlice;
 
     let count = EXCEPTION_BUFFER.exception_count;
@@ -244,8 +246,11 @@ pub unsafe extern fn raise(exception: *const Exception) -> ! {
             }
         }
         assert!(found);
-        let _result = _Unwind_ForcedUnwind(&mut EXCEPTION_BUFFER.uw_exceptions[stack[count - 1] as usize],
+        let _result = _Unwind_ForcedUnwind(
-                                           stop_fn, core::ptr::null_mut());
+            &mut EXCEPTION_BUFFER.uw_exceptions[stack[count - 1] as usize],
+            stop_fn,
+            core::ptr::null_mut(),
+        );
     } else {
         if count < MAX_INFLIGHT_EXCEPTIONS {
             trace!("raising exception at level {}", count);
@@ -253,20 +258,19 @@ pub unsafe extern fn raise(exception: *const Exception) -> ! {
             for (i, slot) in EXCEPTION_BUFFER.exceptions.iter_mut().enumerate() {
                 // we should always be able to find a slot
                 if slot.is_none() {
-                    *slot = Some(
+                    *slot = Some(*mem::transmute::<*const Exception, *const Exception<'static>>(
-                        *mem::transmute::<*const Exception, *const Exception<'static>>
+                        exception,
-                        (exception));
+                    ));
                     EXCEPTION_BUFFER.exception_stack[count] = i as isize;
-                    EXCEPTION_BUFFER.uw_exceptions[i].private =
+                    EXCEPTION_BUFFER.uw_exceptions[i].private = [0; uw::unwinder_private_data_size];
-                        [0; uw::unwinder_private_data_size];
                     EXCEPTION_BUFFER.stack_pointers[i] = StackPointerBacktrace {
                         stack_pointer: 0,
                         initial_backtrace_size: EXCEPTION_BUFFER.backtrace_size,
                         current_backtrace_size: 0,
                     };
                     EXCEPTION_BUFFER.exception_count += 1;
-                    let _result = _Unwind_ForcedUnwind(&mut EXCEPTION_BUFFER.uw_exceptions[i],
+                    let _result =
-                                                       stop_fn, core::ptr::null_mut());
+                        _Unwind_ForcedUnwind(&mut EXCEPTION_BUFFER.uw_exceptions[i], stop_fn, core::ptr::null_mut());
                 }
             }
         } else {
@@ -280,7 +284,7 @@ pub unsafe extern fn raise(exception: *const Exception) -> ! {
                 // https://github.com/rust-lang/rfcs/pull/1719
                 function: "__artiq_raise".as_c_slice(),
                 message: "too many nested exceptions".as_c_slice(),
-                param:    [0, 0, 0]
+                param: [0, 0, 0],
             };
             EXCEPTION_BUFFER.exceptions[MAX_INFLIGHT_EXCEPTIONS] = Some(mem::transmute(exception));
             EXCEPTION_BUFFER.stack_pointers[MAX_INFLIGHT_EXCEPTIONS] = Default::default();
@@ -291,17 +295,20 @@ pub unsafe extern fn raise(exception: *const Exception) -> ! {
     unreachable!();
 }
 
-pub unsafe extern fn resume() -> ! {
+pub unsafe extern "C" fn resume() -> ! {
     trace!("resume");
     assert!(EXCEPTION_BUFFER.exception_count != 0);
     let i = EXCEPTION_BUFFER.exception_stack[EXCEPTION_BUFFER.exception_count - 1];
     assert!(i != -1);
-    let _result = _Unwind_ForcedUnwind(&mut EXCEPTION_BUFFER.uw_exceptions[i as usize],
+    let _result = _Unwind_ForcedUnwind(
-                                       stop_fn, core::ptr::null_mut());
+        &mut EXCEPTION_BUFFER.uw_exceptions[i as usize],
+        stop_fn,
+        core::ptr::null_mut(),
+    );
     unreachable!()
 }
 
-pub unsafe extern fn end_catch() {
+pub unsafe extern "C" fn end_catch() {
     let mut count = EXCEPTION_BUFFER.exception_count;
     assert!(count != 0);
     // we remove all exceptions with SP <= current exception SP
@@ -309,8 +316,7 @@ pub unsafe extern fn end_catch() {
     let index = EXCEPTION_BUFFER.exception_stack[count - 1] as usize;
     EXCEPTION_BUFFER.exception_stack[count - 1] = -1;
     EXCEPTION_BUFFER.exceptions[index] = None;
-    let outer_sp = EXCEPTION_BUFFER.stack_pointers
+    let outer_sp = EXCEPTION_BUFFER.stack_pointers[index].stack_pointer;
-        [index].stack_pointer;
     count -= 1;
     for i in (0..count).rev() {
         let index = EXCEPTION_BUFFER.exception_stack[i];
@@ -334,8 +340,7 @@ pub unsafe extern fn end_catch() {
     };
 }
 
-extern fn cleanup(_unwind_code: uw::_Unwind_Reason_Code,
+extern "C" fn cleanup(_unwind_code: uw::_Unwind_Reason_Code, _uw_exception: *mut uw::_Unwind_Exception) {
-                  _uw_exception: *mut uw::_Unwind_Exception) {
     unimplemented!()
 }
 
@@ -345,18 +350,26 @@ fn uncaught_exception() -> ! {
         for i in 0..EXCEPTION_BUFFER.exception_count {
             if EXCEPTION_BUFFER.exception_stack[i] != i as isize {
                 // find the correct index
-                let index = EXCEPTION_BUFFER.exception_stack
+                let index = EXCEPTION_BUFFER
+                    .exception_stack
                     .iter()
-                    .position(|v| *v == i as isize).unwrap();
+                    .position(|v| *v == i as isize)
+                    .unwrap();
                 let a = EXCEPTION_BUFFER.exception_stack[index];
                 let b = EXCEPTION_BUFFER.exception_stack[i];
                 assert!(a != -1 && b != -1);
-                core::mem::swap(&mut EXCEPTION_BUFFER.exception_stack[index],
+                core::mem::swap(
-                                &mut EXCEPTION_BUFFER.exception_stack[i]);
+                    &mut EXCEPTION_BUFFER.exception_stack[index],
-                core::mem::swap(&mut EXCEPTION_BUFFER.exceptions[a as usize],
+                    &mut EXCEPTION_BUFFER.exception_stack[i],
-                                &mut EXCEPTION_BUFFER.exceptions[b as usize]);
+                );
-                core::mem::swap(&mut EXCEPTION_BUFFER.stack_pointers[a as usize],
+                core::mem::swap(
-                                &mut EXCEPTION_BUFFER.stack_pointers[b as usize]);
+                    &mut EXCEPTION_BUFFER.exceptions[a as usize],
+                    &mut EXCEPTION_BUFFER.exceptions[b as usize],
+                );
+                core::mem::swap(
+                    &mut EXCEPTION_BUFFER.stack_pointers[a as usize],
+                    &mut EXCEPTION_BUFFER.stack_pointers[b as usize],
+                );
             }
         }
     }
@@ -364,17 +377,20 @@ fn uncaught_exception() -> ! {
         crate::kernel::core1::terminate(
             EXCEPTION_BUFFER.exceptions[..EXCEPTION_BUFFER.exception_count].as_ref(),
             EXCEPTION_BUFFER.stack_pointers[..EXCEPTION_BUFFER.exception_count].as_ref(),
-            EXCEPTION_BUFFER.backtrace[..EXCEPTION_BUFFER.backtrace_size].as_mut())
+            EXCEPTION_BUFFER.backtrace[..EXCEPTION_BUFFER.backtrace_size].as_mut(),
+        )
     }
 }
 
 // stop function which would be executed when we unwind each frame
-extern fn stop_fn(_version: c_int,
+extern "C" fn stop_fn(
+    _version: c_int,
     actions: i32,
     _uw_exception_class: uw::_Unwind_Exception_Class,
     _uw_exception: *mut uw::_Unwind_Exception,
     context: *mut uw::_Unwind_Context,
-                  _stop_parameter: *mut c_void) -> uw::_Unwind_Reason_Code {
+    _stop_parameter: *mut c_void,
+) -> uw::_Unwind_Reason_Code {
     unsafe {
         let load_addr = KERNEL_IMAGE.as_ref().unwrap().get_load_addr();
         let backtrace_size = EXCEPTION_BUFFER.backtrace_size;
@@ -423,7 +439,7 @@ static EXCEPTION_ID_LOOKUP: [(&str, u32); 11] = [
 pub fn get_exception_id(name: &str) -> u32 {
     for (n, id) in EXCEPTION_ID_LOOKUP.iter() {
         if *n == name {
-            return *id
+            return *id;
         }
     }
     unimplemented!("unallocated internal exception id")
@@ -431,7 +447,7 @@ pub fn get_exception_id(name: &str) -> u32 {
 
 #[macro_export]
 macro_rules! artiq_raise {
-    ($name:expr, $message:expr, $param0:expr, $param1:expr, $param2:expr) => ({
+    ($name:expr, $message:expr, $param0:expr, $param1:expr, $param2:expr) => {{
         use cslice::AsCSlice;
         let name_id = $crate::eh_artiq::get_exception_id($name);
         let message_cl = $message.clone();
@@ -443,14 +459,12 @@ macro_rules! artiq_raise {
             // https://github.com/rust-lang/rfcs/pull/1719
             function: "(Rust function)".as_c_slice(),
             message: message_cl.as_c_slice(),
-            param:    [$param0, $param1, $param2]
+            param: [$param0, $param1, $param2],
         };
         #[allow(unused_unsafe)]
         unsafe {
             $crate::eh_artiq::raise(&exn)
         }
-    });
+    }};
-    ($name:expr, $message:expr) => ({
+    ($name:expr, $message:expr) => {{ artiq_raise!($name, $message, 0, 0, 0) }};
-        artiq_raise!($name, $message, 0, 0, 0)
-    });
 }

src/runtime/src/i2c.rs

@@ -1,9 +1,10 @@
 use libboard_zynq;
+
 use crate::artiq_raise;
 
 pub static mut I2C_BUS: Option<libboard_zynq::i2c::I2c> = None;
 
-pub extern fn start(busno: i32) {
+pub extern "C" fn start(busno: i32) {
     if busno > 0 {
         artiq_raise!("I2CError", "I2C bus could not be accessed");
     }
@@ -14,7 +15,7 @@ pub extern fn start(busno: i32) {
     }
 }
 
-pub extern fn restart(busno: i32) {
+pub extern "C" fn restart(busno: i32) {
     if busno > 0 {
         artiq_raise!("I2CError", "I2C bus could not be accessed");
     }
@@ -25,7 +26,7 @@ pub extern fn restart(busno: i32) {
     }
 }
 
-pub extern fn stop(busno: i32) {
+pub extern "C" fn stop(busno: i32) {
     if busno > 0 {
         artiq_raise!("I2CError", "I2C bus could not be accessed");
     }
@@ -36,7 +37,7 @@ pub extern fn stop(busno: i32) {
     }
 }
 
-pub extern fn write(busno: i32, data: i32) -> bool {
+pub extern "C" fn write(busno: i32, data: i32) -> bool {
     if busno > 0 {
         artiq_raise!("I2CError", "I2C bus could not be accessed");
     }
@@ -48,7 +49,7 @@ pub extern fn write(busno: i32, data: i32) -> bool {
     }
 }
 
-pub extern fn read(busno: i32, ack: bool) -> i32 {
+pub extern "C" fn read(busno: i32, ack: bool) -> i32 {
     if busno > 0 {
         artiq_raise!("I2CError", "I2C bus could not be accessed");
     }
@@ -60,11 +61,12 @@ pub extern fn read(busno: i32, ack: bool) -> i32 {
     }
 }
 
-pub extern fn switch_select(busno: i32, address: i32, mask: i32) {
+pub extern "C" fn switch_select(busno: i32, address: i32, mask: i32) {
     if busno > 0 {
         artiq_raise!("I2CError", "I2C bus could not be accessed");
     }
-    let ch = match mask { //decode from mainline, PCA9548-centric API
+    let ch = match mask {
+        //decode from mainline, PCA9548-centric API
         0x00 => None,
         0x01 => Some(0),
         0x02 => Some(1),
@@ -74,10 +76,15 @@ pub extern fn switch_select(busno: i32, address: i32, mask: i32) {
         0x20 => Some(5),
         0x40 => Some(6),
         0x80 => Some(7),
-        _ => artiq_raise!("I2CError", "switch select supports only one channel")
+        _ => artiq_raise!("I2CError", "switch select supports only one channel"),
     };
     unsafe {
-        if (&mut I2C_BUS).as_mut().unwrap().pca954x_select(address as u8, ch).is_err() {
+        if (&mut I2C_BUS)
+            .as_mut()
+            .unwrap()
+            .pca954x_select(address as u8, ch)
+            .is_err()
+        {
             artiq_raise!("I2CError", "switch select failed");
         }
     }

src/runtime/src/irq.rs

@@ -1,12 +1,9 @@
-use libboard_zynq::{gic, mpcore, println, stdio};
-use libcortex_a9::{
-    asm, interrupt_handler,
-    regs::MPIDR,
-    spin_lock_yield, notify_spin_lock
-};
-use libregister::RegisterR;
 use core::sync::atomic::{AtomicBool, Ordering};
 
+use libboard_zynq::{gic, mpcore, println, stdio};
+use libcortex_a9::{asm, interrupt_handler, notify_spin_lock, regs::MPIDR, spin_lock_yield};
+use libregister::RegisterR;
+
 extern "C" {
     static mut __stack1_start: u32;
     fn main_core1() -> !;

src/runtime/src/kernel/api.rs

@@ -1,29 +1,25 @@
-use core::ffi::VaList;
+use alloc::vec;
-use core::ptr;
+use core::{ffi::VaList, ptr, str};
-use core::str;
+
 use libc::{c_char, c_int, size_t};
 use libm;
 use log::{info, warn};
 
-use alloc::vec;
+use super::{cache,
-
+            core1::rtio_get_destination_status,
-use crate::eh_artiq;
+            dma,
-use crate::rtio;
+            rpc::{rpc_recv, rpc_send, rpc_send_async}};
-use crate::i2c;
+use crate::{eh_artiq, i2c, rtio};
-use super::rpc::{rpc_send, rpc_send_async, rpc_recv};
-use super::dma;
-use super::cache;
-use super::core1::rtio_get_destination_status;
 
 extern "C" {
     fn vsnprintf_(buffer: *mut c_char, count: size_t, format: *const c_char, va: VaList) -> c_int;
 }
 
-unsafe extern fn core_log(fmt: *const c_char, mut args: ...) {
+unsafe extern "C" fn core_log(fmt: *const c_char, mut args: ...) {
     let size = vsnprintf_(ptr::null_mut(), 0, fmt, args.as_va_list()) as usize;
     let mut buf = vec![0; size + 1];
     vsnprintf_(buf.as_mut_ptr() as *mut i8, size + 1, fmt, args.as_va_list());
-    let buf: &[u8] = &buf.as_slice()[..size-1]; // strip \n and NUL
+    let buf: &[u8] = &buf.as_slice()[..size - 1]; // strip \n and NUL
     match str::from_utf8(buf) {
         Ok(s) => info!("kernel: {}", s),
         Err(e) => {
@@ -33,14 +29,13 @@ unsafe extern fn core_log(fmt: *const c_char, mut args: ...) {
     }
 }
 
-unsafe extern fn rtio_log(fmt: *const c_char, mut args: ...) {
+unsafe extern "C" fn rtio_log(fmt: *const c_char, mut args: ...) {
     let size = vsnprintf_(ptr::null_mut(), 0, fmt, args.as_va_list()) as usize;
     let mut buf = vec![0; size + 1];
     vsnprintf_(buf.as_mut_ptr(), size + 1, fmt, args.as_va_list());
     rtio::write_log(buf.as_slice());
 }
 
-
 macro_rules! api {
     ($i:ident) => ({
         extern { static $i: u8; }
@@ -56,24 +51,25 @@ macro_rules! api {
 }
 
 macro_rules! api_libm_f64f64 {
-    ($i:ident) => ({
+    ($i:ident) => {{
-        extern fn $i(x: f64) -> f64 {
+        extern "C" fn $i(x: f64) -> f64 {
             libm::$i(x)
         }
         api!($i = $i)
-    })
+    }};
 }
 
 macro_rules! api_libm_f64f64f64 {
-    ($i:ident) => ({
+    ($i:ident) => {{
-        extern fn $i(x: f64, y: f64) -> f64 {
+        extern "C" fn $i(x: f64, y: f64) -> f64 {
             libm::$i(x, y)
         }
         api!($i = $i)
-    })
+    }};
 }
 
 pub fn resolve(required: &[u8]) -> Option<u32> {
+    #[rustfmt::skip]
     let api = &[
         // timing
         api!(now_mu = rtio::now_mu),
@@ -124,6 +120,7 @@ pub fn resolve(required: &[u8]) -> Option<u32> {
         api!(__aeabi_ddiv),
         api!(__aeabi_dmul),
         api!(__aeabi_dsub),
+
         // Double-precision floating-point comparison helper functions
         // RTABI chapter 4.1.2, Table 3
         api!(__aeabi_dcmpeq),
@@ -133,12 +130,14 @@ pub fn resolve(required: &[u8]) -> Option<u32> {
         api!(__aeabi_dcmpge),
         api!(__aeabi_dcmpgt),
         api!(__aeabi_dcmpun),
+
         // Single-precision floating-point arithmetic helper functions
         // RTABI chapter 4.1.2, Table 4
         api!(__aeabi_fadd),
         api!(__aeabi_fdiv),
         api!(__aeabi_fmul),
         api!(__aeabi_fsub),
+
         // Single-precision floating-point comparison helper functions
         // RTABI chapter 4.1.2, Table 5
         api!(__aeabi_fcmpeq),
@@ -148,6 +147,7 @@ pub fn resolve(required: &[u8]) -> Option<u32> {
         api!(__aeabi_fcmpge),
         api!(__aeabi_fcmpgt),
         api!(__aeabi_fcmpun),
+
         // Floating-point to integer conversions.
         // RTABI chapter 4.1.2, Table 6
         api!(__aeabi_d2iz),
@@ -158,9 +158,11 @@ pub fn resolve(required: &[u8]) -> Option<u32> {
         api!(__aeabi_f2uiz),
         api!(__aeabi_f2lz),
         api!(__aeabi_f2ulz),
+
         // Conversions between floating types.
         // RTABI chapter 4.1.2, Table 7
         api!(__aeabi_f2d),
+
         // Integer to floating-point conversions.
         // RTABI chapter 4.1.2, Table 8
         api!(__aeabi_i2d),
@@ -171,12 +173,14 @@ pub fn resolve(required: &[u8]) -> Option<u32> {
         api!(__aeabi_ui2f),
         api!(__aeabi_l2f),
         api!(__aeabi_ul2f),
+
         // Long long helper functions
         // RTABI chapter 4.2, Table 9
         api!(__aeabi_lmul),
         api!(__aeabi_llsl),
         api!(__aeabi_llsr),
         api!(__aeabi_lasr),
+
         // Integer division functions
         // RTABI chapter 4.3.1
         api!(__aeabi_idiv),
@@ -184,6 +188,7 @@ pub fn resolve(required: &[u8]) -> Option<u32> {
         api!(__aeabi_idivmod),
         api!(__aeabi_uidiv),
         api!(__aeabi_uldivmod),
+
         // 4.3.4 Memory copying, clearing, and setting
         api!(__aeabi_memcpy8),
         api!(__aeabi_memcpy4),
@@ -199,10 +204,30 @@ pub fn resolve(required: &[u8]) -> Option<u32> {
         api!(__aeabi_memclr),
 
         // libc
-        api!(memcpy, extern { fn memcpy(dest: *mut u8, src: *const u8, n: usize) -> *mut u8; }),
+        api!(
-        api!(memmove, extern { fn memmove(dest: *mut u8, src: *const u8, n: usize) -> *mut u8; }),
+            memcpy,
-        api!(memset, extern { fn memset(s: *mut u8, c: i32, n: usize) -> *mut u8; }),
+            extern "C" {
-        api!(memcmp, extern { fn memcmp(s1: *const u8, s2: *const u8, n: usize) -> i32; }),
+                fn memcpy(dest: *mut u8, src: *const u8, n: usize) -> *mut u8;
+            }
+        ),
+        api!(
+            memmove,
+            extern "C" {
+                fn memmove(dest: *mut u8, src: *const u8, n: usize) -> *mut u8;
+            }
+        ),
+        api!(
+            memset,
+            extern "C" {
+                fn memset(s: *mut u8, c: i32, n: usize) -> *mut u8;
+            }
+        ),
+        api!(
+            memcmp,
+            extern "C" {
+                fn memcmp(s1: *const u8, s2: *const u8, n: usize) -> i32;
+            }
+        ),
 
         // exceptions
         api!(_Unwind_Resume = unwind::_Unwind_Resume),
@@ -210,6 +235,7 @@ pub fn resolve(required: &[u8]) -> Option<u32> {
         api!(__nac3_raise = eh_artiq::raise),
         api!(__nac3_resume = eh_artiq::resume),
         api!(__nac3_end_catch = eh_artiq::end_catch),
+
         // legacy exception symbols
         api!(__artiq_personality = eh_artiq::artiq_personality),
         api!(__artiq_raise = eh_artiq::raise),
@@ -241,7 +267,7 @@ pub fn resolve(required: &[u8]) -> Option<u32> {
         api_libm_f64f64!(fabs),
         api_libm_f64f64!(floor),
         {
-            extern fn fma(x: f64, y: f64, z: f64) -> f64 {
+            extern "C" fn fma(x: f64, y: f64, z: f64) -> f64 {
                 libm::fma(x, y, z)
             }
             api!(fma = fma)
@@ -253,7 +279,7 @@ pub fn resolve(required: &[u8]) -> Option<u32> {
         api_libm_f64f64!(j0),
         api_libm_f64f64!(j1),
         {
-            extern fn jn(n: i32, x: f64) -> f64 {
+            extern "C" fn jn(n: i32, x: f64) -> f64 {
                 libm::jn(n, x)
             }
             api!(jn = jn)
@@ -275,7 +301,7 @@ pub fn resolve(required: &[u8]) -> Option<u32> {
         api_libm_f64f64!(y0),
         api_libm_f64f64!(y1),
         {
-            extern fn yn(n: i32, x: f64) -> f64 {
+            extern "C" fn yn(n: i32, x: f64) -> f64 {
                 libm::yn(n, x)
             }
             api!(yn = yn)

src/runtime/src/kernel/cache.rs

@@ -1,12 +1,17 @@
-use alloc::{string::String, boxed::Box};
+use alloc::{boxed::Box, string::String};
-use cslice::{CSlice, AsCSlice};
+use core::mem::{forget, transmute};
-use core::mem::{transmute, forget};
-use super::{KERNEL_CHANNEL_0TO1, KERNEL_CHANNEL_1TO0, Message};
 
-pub extern fn get(key: CSlice<u8>) -> &CSlice<'static, i32> {
+use cslice::{AsCSlice, CSlice};
+
+use super::{Message, KERNEL_CHANNEL_0TO1, KERNEL_CHANNEL_1TO0};
+
+pub extern "C" fn get(key: CSlice<u8>) -> &CSlice<'static, i32> {
     let key = String::from_utf8(key.as_ref().to_vec()).unwrap();
     unsafe {
-        KERNEL_CHANNEL_1TO0.as_mut().unwrap().send(Message::CacheGetRequest(key));
+        KERNEL_CHANNEL_1TO0
+            .as_mut()
+            .unwrap()
+            .send(Message::CacheGetRequest(key));
         let msg = KERNEL_CHANNEL_0TO1.as_mut().unwrap().recv();
         if let Message::CacheGetReply(v) = msg {
             let leaked = Box::new(v.as_c_slice());
@@ -20,11 +25,13 @@ pub extern fn get(key: CSlice<u8>) -> &CSlice<'static, i32> {
     }
 }
 
-pub extern fn put(key: CSlice<u8>, list: &CSlice<i32>) {
+pub extern "C" fn put(key: CSlice<u8>, list: &CSlice<i32>) {
     let key = String::from_utf8(key.as_ref().to_vec()).unwrap();
     let value = list.as_ref().to_vec();
     unsafe {
-        KERNEL_CHANNEL_1TO0.as_mut().unwrap().send(Message::CachePutRequest(key, value));
+        KERNEL_CHANNEL_1TO0
+            .as_mut()
+            .unwrap()
+            .send(Message::CachePutRequest(key, value));
     }
 }
-

src/runtime/src/kernel/control.rs

@@ -1,11 +1,11 @@
-use libcortex_a9::sync_channel::{Sender, Receiver};
+use core::mem::{forget, replace};
+
+use libcortex_a9::sync_channel::{Receiver, Sender};
 use libsupport_zynq::boot::Core1;
 
-use super::{CHANNEL_0TO1, CHANNEL_1TO0, CHANNEL_SEM, INIT_LOCK, Message};
+use super::{Message, CHANNEL_0TO1, CHANNEL_1TO0, CHANNEL_SEM, INIT_LOCK};
 use crate::irq::restart_core1;
 
-use core::mem::{forget, replace};
-
 pub struct Control {
     pub tx: Sender<'static, Message>,
     pub rx: Receiver<'static, Message>,
@@ -53,4 +53,3 @@ impl Control {
         forget(replace(&mut self.rx, core0_rx));
     }
 }
-

src/runtime/src/kernel/core1.rs

@@ -1,31 +1,20 @@
 //! Kernel prologue/epilogue that runs on the 2nd CPU core
 
-use core::{mem, ptr, cell::UnsafeCell};
 use alloc::borrow::ToOwned;
-use log::{debug, info, error};
+use core::{cell::UnsafeCell, mem, ptr};
-use cslice::CSlice;
 
-use libcortex_a9::{
+use cslice::CSlice;
-    enable_fpu,
+use dyld::{self, elf::EXIDX_Entry, Library};
-    cache::{dcci_slice, iciallu, bpiall},
+use libboard_zynq::{gic, mpcore};
-    asm::{dsb, isb},
+use libcortex_a9::{asm::{dsb, isb},
-    sync_channel,
+                   cache::{bpiall, dcci_slice, iciallu},
-};
+                   enable_fpu, sync_channel};
-use libboard_zynq::{mpcore, gic};
 use libsupport_zynq::ram;
-use dyld::{self, Library, elf::EXIDX_Entry};
+use log::{debug, error, info};
+
+use super::{api::resolve, dma, rpc::rpc_send_async, Message, CHANNEL_0TO1, CHANNEL_1TO0, CHANNEL_SEM, INIT_LOCK,
+            KERNEL_CHANNEL_0TO1, KERNEL_CHANNEL_1TO0, KERNEL_IMAGE};
 use crate::{eh_artiq, get_async_errors, rtio};
-use super::{
-    api::resolve,
-    rpc::rpc_send_async,
-    INIT_LOCK,
-    CHANNEL_0TO1, CHANNEL_1TO0,
-    CHANNEL_SEM,
-    KERNEL_CHANNEL_0TO1, KERNEL_CHANNEL_1TO0,
-    KERNEL_IMAGE,
-    Message,
-    dma,
-};
 
 // linker symbols
 extern "C" {
@@ -39,12 +28,12 @@ unsafe fn attribute_writeback(typeinfo: *const ()) {
     struct Attr {
         offset: usize,
         tag: CSlice<'static, u8>,
-        name:   CSlice<'static, u8>
+        name: CSlice<'static, u8>,
     }
 
     struct Type {
         attributes: *const *const Attr,
-        objects:    *const *const ()
+        objects: *const *const (),
     }
 
     let mut tys = typeinfo as *const *const Type;
@@ -63,11 +52,16 @@ unsafe fn attribute_writeback(typeinfo: *const ()) {
                 attributes = attributes.offset(1);
 
                 if (*attribute).tag.len() > 0 {
-                    rpc_send_async(0, &(*attribute).tag, [
+                    rpc_send_async(
+                        0,
+                        &(*attribute).tag,
+                        [
                             &object as *const _ as *const (),
                             &(*attribute).name as *const _ as *const (),
-                        (object as usize + (*attribute).offset) as *const ()
+                            (object as usize + (*attribute).offset) as *const (),
-                    ].as_ptr());
+                        ]
+                        .as_ptr(),
+                    );
                 }
             }
         }
@@ -82,7 +76,8 @@ pub struct KernelImage {
 
 impl KernelImage {
     pub fn new(library: Library) -> Result<Self, dyld::Error> {
-        let __modinit__ = library.lookup(b"__modinit__")
+        let __modinit__ = library
+            .lookup(b"__modinit__")
             .ok_or(dyld::Error::Lookup("__modinit__".to_owned()))?;
         let typeinfo = library.lookup(b"typeinfo");
 
@@ -90,8 +85,7 @@ impl KernelImage {
         let bss_start = library.lookup(b"__bss_start");
         let end = library.lookup(b"_end");
         if let Some(bss_start) = bss_start {
-            let end = end
+            let end = end.ok_or(dyld::Error::Lookup("_end".to_owned()))?;
-                .ok_or(dyld::Error::Lookup("_end".to_owned()))?;
             unsafe {
                 ptr::write_bytes(bss_start as *mut u8, 0, (end - bss_start) as usize);
             }
@@ -126,9 +120,7 @@ impl KernelImage {
     }
 
     pub fn get_load_addr(&self) -> usize {
-        unsafe {
+        unsafe { self.library.get().as_ref().unwrap().image.as_ptr() as usize }
-            self.library.get().as_ref().unwrap().image.as_ptr() as usize
-        }
     }
 }
 
@@ -164,20 +156,19 @@ pub extern "C" fn main_core1() {
         let message = core1_rx.recv();
         match message {
             Message::LoadRequest(data) => {
-                let result = dyld::load(&data, &resolve)
+                let result = dyld::load(&data, &resolve).and_then(KernelImage::new);
-                    .and_then(KernelImage::new);
                 match result {
                     Ok(kernel) => {
                         loaded_kernel = Some(kernel);
                         debug!("kernel loaded");
                         core1_tx.send(Message::LoadCompleted);
-                    },
+                    }
                     Err(error) => {
                         error!("failed to load shared library: {}", error);
                         core1_tx.send(Message::LoadFailed);
                     }
                 }
-            },
+            }
             Message::StartRequest => {
                 info!("kernel starting");
                 if let Some(kernel) = loaded_kernel.take() {
@@ -202,9 +193,11 @@ pub extern "C" fn main_core1() {
 }
 
 /// Called by eh_artiq
-pub fn terminate(exceptions: &'static [Option<eh_artiq::Exception<'static>>],
+pub fn terminate(
+    exceptions: &'static [Option<eh_artiq::Exception<'static>>],
     stack_pointers: &'static [eh_artiq::StackPointerBacktrace],
-                 backtrace: &'static mut [(usize, usize)]) -> ! {
+    backtrace: &'static mut [(usize, usize)],
+) -> ! {
     {
         let core1_tx = unsafe { KERNEL_CHANNEL_1TO0.as_mut().unwrap() };
         let errors = unsafe { get_async_errors() };
@@ -215,7 +208,7 @@ pub fn terminate(exceptions: &'static [Option<eh_artiq::Exception<'static>>],
 
 /// Called by llvm_libunwind
 #[no_mangle]
-extern fn dl_unwind_find_exidx(pc: *const u32, len_ptr: *mut u32) -> *const u32 {
+extern "C" fn dl_unwind_find_exidx(pc: *const u32, len_ptr: *mut u32) -> *const u32 {
     let length;
     let start: *const EXIDX_Entry;
     unsafe {
@@ -223,9 +216,14 @@ extern fn dl_unwind_find_exidx(pc: *const u32, len_ptr: *mut u32) -> *const u32
             length = (&__exidx_end as *const EXIDX_Entry).offset_from(&__exidx_start) as u32;
             start = &__exidx_start;
         } else if KERNEL_IMAGE != ptr::null() {
-            let exidx = KERNEL_IMAGE.as_ref()
+            let exidx = KERNEL_IMAGE
+                .as_ref()
                 .expect("dl_unwind_find_exidx kernel image")
-                .library.get().as_ref().unwrap().exidx();
+                .library
+                .get()
+                .as_ref()
+                .unwrap()
+                .exidx();
             length = exidx.len() as u32;
             start = exidx.as_ptr();
         } else {
@@ -237,7 +235,7 @@ extern fn dl_unwind_find_exidx(pc: *const u32, len_ptr: *mut u32) -> *const u32
     start as *const u32
 }
 
-pub extern fn rtio_get_destination_status(destination: i32) -> bool {
+pub extern "C" fn rtio_get_destination_status(destination: i32) -> bool {
     #[cfg(has_drtio)]
     if destination > 0 && destination < 255 {
         let reply = unsafe {
@@ -248,7 +246,7 @@ pub extern fn rtio_get_destination_status(destination: i32) -> bool {
         };
         return match reply {
             Message::UpDestinationsReply(x) => x,
-            _ => panic!("received unexpected reply to UpDestinationsRequest: {:?}", reply)
+            _ => panic!("received unexpected reply to UpDestinationsRequest: {:?}", reply),
         };
     }
 

src/runtime/src/kernel/dma.rs

@@ -1,15 +1,12 @@
-use crate::{
+use alloc::{boxed::Box, string::String, vec::Vec};
-    pl::csr,
-    artiq_raise,
-    rtio,
-};
-use alloc::{vec::Vec, string::String, boxed::Box};
-use cslice::CSlice;
-use super::{KERNEL_IMAGE, KERNEL_CHANNEL_0TO1, KERNEL_CHANNEL_1TO0, Message};
 use core::mem;
 
+use cslice::CSlice;
 use libcortex_a9::cache::dcci_slice;
 
+use super::{Message, KERNEL_CHANNEL_0TO1, KERNEL_CHANNEL_1TO0, KERNEL_IMAGE};
+use crate::{artiq_raise, pl::csr, rtio};
+
 const ALIGNMENT: usize = 16 * 8;
 
 #[repr(C)]
@@ -33,10 +30,13 @@ pub unsafe fn init_dma_recorder() {
     mem::forget(mem::replace(&mut RECORDER, None));
 }
 
-pub extern fn dma_record_start(name: CSlice<u8>) {
+pub extern "C" fn dma_record_start(name: CSlice<u8>) {
     let name = String::from_utf8(name.as_ref().to_vec()).unwrap();
     unsafe {
-        KERNEL_CHANNEL_1TO0.as_mut().unwrap().send(Message::DmaEraseRequest(name.clone()));
+        KERNEL_CHANNEL_1TO0
+            .as_mut()
+            .unwrap()
+            .send(Message::DmaEraseRequest(name.clone()));
     }
     unsafe {
         if RECORDER.is_some() {
@@ -44,10 +44,10 @@ pub extern fn dma_record_start(name: CSlice<u8>) {
         }
 
         let library = KERNEL_IMAGE.as_ref().unwrap();
-        library.rebind(b"rtio_output",
+        library.rebind(b"rtio_output", dma_record_output as *const ()).unwrap();
-                       dma_record_output as *const ()).unwrap();
+        library
-        library.rebind(b"rtio_output_wide",
+            .rebind(b"rtio_output_wide", dma_record_output_wide as *const ())
-                       dma_record_output_wide as *const ()).unwrap();
+            .unwrap();
 
         RECORDER = Some(DmaRecorder {
             name,
@@ -57,29 +57,29 @@ pub extern fn dma_record_start(name: CSlice<u8>) {
     }
 }
 
-pub extern fn dma_record_stop(duration: i64) {
+pub extern "C" fn dma_record_stop(duration: i64) {
     unsafe {
         if RECORDER.is_none() {
             artiq_raise!("DMAError", "DMA is not recording")
         }
 
         let library = KERNEL_IMAGE.as_ref().unwrap();
-        library.rebind(b"rtio_output",
+        library.rebind(b"rtio_output", rtio::output as *const ()).unwrap();
-                       rtio::output as *const ()).unwrap();
+        library
-        library.rebind(b"rtio_output_wide",
+            .rebind(b"rtio_output_wide", rtio::output_wide as *const ())
-                       rtio::output_wide as *const ()).unwrap();
+            .unwrap();
 
         let mut recorder = RECORDER.take().unwrap();
         recorder.duration = duration;
-        KERNEL_CHANNEL_1TO0.as_mut().unwrap().send(
+        KERNEL_CHANNEL_1TO0
-            Message::DmaPutRequest(recorder)
+            .as_mut()
-        );
+            .unwrap()
+            .send(Message::DmaPutRequest(recorder));
     }
 }
 
 #[inline(always)]
-unsafe fn dma_record_output_prepare(timestamp: i64, target: i32,
+unsafe fn dma_record_output_prepare(timestamp: i64, target: i32, words: usize) {
-                                    words: usize) {
     // See gateware/rtio/dma.py.
     const HEADER_LENGTH: usize = /*length*/1 + /*channel*/3 + /*timestamp*/8 + /*address*/1;
     let length = HEADER_LENGTH + /*data*/words * 4;
@@ -103,7 +103,7 @@ unsafe fn dma_record_output_prepare(timestamp: i64, target: i32,
     ]);
 }
 
-pub extern fn dma_record_output(target: i32, word: i32) {
+pub extern "C" fn dma_record_output(target: i32, word: i32) {
     unsafe {
         let timestamp = rtio::now_mu();
         dma_record_output_prepare(timestamp, target, 1);
@@ -116,7 +116,7 @@ pub extern fn dma_record_output(target: i32, word: i32) {
     }
 }
 
-pub extern fn dma_record_output_wide(target: i32, words: CSlice<i32>) {
+pub extern "C" fn dma_record_output_wide(target: i32, words: CSlice<i32>) {
     assert!(words.len() <= 16); // enforce the hardware limit
 
     unsafe {
@@ -134,19 +134,22 @@ pub extern fn dma_record_output_wide(target: i32, words: CSlice<i32>) {
     }
 }
 
-pub extern fn dma_erase(name: CSlice<u8>) {
+pub extern "C" fn dma_erase(name: CSlice<u8>) {
     let name = String::from_utf8(name.as_ref().to_vec()).unwrap();
     unsafe {
-        KERNEL_CHANNEL_1TO0.as_mut().unwrap().send(Message::DmaEraseRequest(name));
+        KERNEL_CHANNEL_1TO0
+            .as_mut()
+            .unwrap()
+            .send(Message::DmaEraseRequest(name));
     }
 }
 
-pub extern fn dma_retrieve(name: CSlice<u8>) -> DmaTrace {
+pub extern "C" fn dma_retrieve(name: CSlice<u8>) -> DmaTrace {
     let name = String::from_utf8(name.as_ref().to_vec()).unwrap();
     unsafe {
         KERNEL_CHANNEL_1TO0.as_mut().unwrap().send(Message::DmaGetRequest(name));
     }
-    match unsafe {KERNEL_CHANNEL_0TO1.as_mut().unwrap()}.recv() {
+    match unsafe { KERNEL_CHANNEL_0TO1.as_mut().unwrap() }.recv() {
         Message::DmaGetReply(None) => (),
         Message::DmaGetReply(Some((mut v, duration))) => {
             v.reserve(ALIGNMENT - 1);
@@ -162,18 +165,15 @@ pub extern fn dma_retrieve(name: CSlice<u8>) -> DmaTrace {
             dcci_slice(&v);
             let v = Box::new(v);
             let address = Box::into_raw(v) as *mut Vec<u8> as i32;
-            return DmaTrace {
+            return DmaTrace { address, duration };
-                address,
+        }
-                duration,
-            };
-        },
         _ => panic!("Expected DmaGetReply after DmaGetRequest!"),
     }
     // we have to defer raising error as we have to drop the message first...
     artiq_raise!("DMAError", "DMA trace not found");
 }
 
-pub extern fn dma_playback(timestamp: i64, ptr: i32) {
+pub extern "C" fn dma_playback(timestamp: i64, ptr: i32) {
     unsafe {
         let v = Box::from_raw(ptr as *mut Vec<u8>);
         let padding = ALIGNMENT - v.as_ptr() as usize % ALIGNMENT;
@@ -197,16 +197,23 @@ pub extern fn dma_playback(timestamp: i64, ptr: i32) {
             let channel = csr::rtio_dma::error_channel_read();
             csr::rtio_dma::error_write(1);
             if error & 1 != 0 {
-                artiq_raise!("RTIOUnderflow",
+                artiq_raise!(
+                    "RTIOUnderflow",
                     "RTIO underflow at {1} mu, channel {rtio_channel_info:0}",
-                    channel as i64, timestamp as i64, 0);
+                    channel as i64,
+                    timestamp as i64,
+                    0
+                );
             }
             if error & 2 != 0 {
-                artiq_raise!("RTIODestinationUnreachable",
+                artiq_raise!(
+                    "RTIODestinationUnreachable",
                     "RTIO destination unreachable, output, at {1} mu, channel {rtio_channel_info:0}",
-                    channel as i64, timestamp as i64, 0);
+                    channel as i64,
+                    timestamp as i64,
+                    0
+                );
             }
         }
     }
 }
-

src/runtime/src/kernel/mod.rs

@@ -1,15 +1,16 @@
+use alloc::{string::String, vec::Vec};
 use core::ptr;
-use alloc::{vec::Vec, string::String};
 
-use libcortex_a9::{mutex::Mutex, sync_channel, semaphore::Semaphore};
+use libcortex_a9::{mutex::Mutex, semaphore::Semaphore, sync_channel};
+
 use crate::eh_artiq;
 
 mod control;
 pub use control::Control;
-pub mod core1;
 mod api;
-mod rpc;
+pub mod core1;
 mod dma;
+mod rpc;
 pub use dma::DmaRecorder;
 mod cache;
 
@@ -21,7 +22,7 @@ pub struct RPCException {
     pub file: u32,
     pub line: i32,
     pub column: i32,
-    pub function: u32
+    pub function: u32,
 }
 
 #[derive(Debug, Clone)]
@@ -31,11 +32,16 @@ pub enum Message {
     LoadFailed,
     StartRequest,
     KernelFinished(u8),
-    KernelException(&'static [Option<eh_artiq::Exception<'static>>],
+    KernelException(
+        &'static [Option<eh_artiq::Exception<'static>>],
         &'static [eh_artiq::StackPointerBacktrace],
         &'static [(usize, usize)],
-                    u8),
+        u8,
-    RpcSend { is_async: bool, data: Vec<u8> },
+    ),
+    RpcSend {
+        is_async: bool,
+        data: Vec<u8>,
+    },
     RpcRecvRequest(*mut ()),
     RpcRecvReply(Result<usize, RPCException>),
 
@@ -64,4 +70,3 @@ static mut KERNEL_CHANNEL_1TO0: Option<sync_channel::Sender<'static, Message>> =
 pub static mut KERNEL_IMAGE: *const core1::KernelImage = ptr::null();
 
 static INIT_LOCK: Mutex<()> = Mutex::new(());
-

src/runtime/src/kernel/rpc.rs

@@ -1,14 +1,11 @@
 //! Kernel-side RPC API
 
 use alloc::vec::Vec;
+
 use cslice::CSlice;
 
-use crate::eh_artiq;
+use super::{Message, KERNEL_CHANNEL_0TO1, KERNEL_CHANNEL_1TO0};
-use crate::rpc::send_args;
+use crate::{eh_artiq, rpc::send_args};
-use super::{
-    KERNEL_CHANNEL_0TO1, KERNEL_CHANNEL_1TO0,
-    Message,
-};
 
 fn rpc_send_common(is_async: bool, service: u32, tag: &CSlice<u8>, data: *const *const ()) {
     let core1_tx = unsafe { KERNEL_CHANNEL_1TO0.as_mut().unwrap() };
@@ -17,15 +14,15 @@ fn rpc_send_common(is_async: bool, service: u32, tag: &CSlice<u8>, data: *const
     core1_tx.send(Message::RpcSend { is_async, data: buffer });
 }
 
-pub extern fn rpc_send(service: u32, tag: &CSlice<u8>, data: *const *const ()) {
+pub extern "C" fn rpc_send(service: u32, tag: &CSlice<u8>, data: *const *const ()) {
     rpc_send_common(false, service, tag, data);
 }
 
-pub extern fn rpc_send_async(service: u32, tag: &CSlice<u8>, data: *const *const ()) {
+pub extern "C" fn rpc_send_async(service: u32, tag: &CSlice<u8>, data: *const *const ()) {
     rpc_send_common(true, service, tag, data);
 }
 
-pub extern fn rpc_recv(slot: *mut ()) -> usize {
+pub extern "C" fn rpc_recv(slot: *mut ()) -> usize {
     let reply = unsafe {
         let core1_rx = KERNEL_CHANNEL_0TO1.as_mut().unwrap();
         let core1_tx = KERNEL_CHANNEL_1TO0.as_mut().unwrap();
@@ -42,9 +39,9 @@ pub extern fn rpc_recv(slot: *mut ()) -> usize {
                 column: exception.column as u32,
                 function: CSlice::new(exception.function as *const u8, usize::MAX),
                 message: CSlice::new(exception.message as *const u8, usize::MAX),
-                param:    exception.param
+                param: exception.param,
             })
         },
-        _ => panic!("received unexpected reply to RpcRecvRequest: {:?}", reply)
+        _ => panic!("received unexpected reply to RpcRecvRequest: {:?}", reply),
     }
 }

src/runtime/src/main.rs

@@ -1,6 +1,6 @@
 #![no_std]
 #![no_main]
-#![recursion_limit="1024"]  // for futures_util::select!
+#![recursion_limit = "1024"] // for futures_util::select!
 #![feature(alloc_error_handler)]
 #![feature(panic_info_message)]
 #![feature(c_variadic)]
@@ -12,25 +12,32 @@
 #[macro_use]
 extern crate alloc;
 
-use log::{info, warn, error};
+use libasync::{block_async, task};
-
-use libboard_zynq::{timer::GlobalTimer, mpcore, gic};
-use libasync::{task, block_async};
-use libsupport_zynq::ram;
-use nb;
-use void::Void;
-use libconfig::Config;
-use libcortex_a9::l2c::enable_l2_cache;
-use libboard_artiq::{logger, identifier_read, pl};
 #[cfg(feature = "target_kasli_soc")]
 use libboard_artiq::io_expander;
+use libboard_artiq::{identifier_read, logger, pl};
+use libboard_zynq::{gic, mpcore, timer::GlobalTimer};
+use libconfig::Config;
+use libcortex_a9::l2c::enable_l2_cache;
+use libsupport_zynq::ram;
+use log::{error, info, warn};
+use nb;
+use void::Void;
 
 const ASYNC_ERROR_COLLISION: u8 = 1 << 0;
 const ASYNC_ERROR_BUSY: u8 = 1 << 1;
 const ASYNC_ERROR_SEQUENCE_ERROR: u8 = 1 << 2;
 
-mod proto_async;
+mod analyzer;
 mod comms;
+mod eh_artiq;
+mod i2c;
+mod irq;
+mod kernel;
+mod mgmt;
+mod moninj;
+mod panic;
+mod proto_async;
 mod rpc;
 #[cfg(ki_impl = "csr")]
 #[path = "rtio_csr.rs"]
@@ -38,16 +45,8 @@ mod rtio;
 #[cfg(ki_impl = "acp")]
 #[path = "rtio_acp.rs"]
 mod rtio;
-mod rtio_mgt;
 mod rtio_clocking;
-mod kernel;
+mod rtio_mgt;
-mod moninj;
-mod eh_artiq;
-mod panic;
-mod mgmt;
-mod analyzer;
-mod irq;
-mod i2c;
 
 static mut SEEN_ASYNC_ERRORS: u8 = 0;
 
@@ -74,15 +73,27 @@ async fn report_async_rtio_errors() {
             let errors = pl::csr::rtio_core::async_error_read();
             if errors & ASYNC_ERROR_COLLISION != 0 {
                 let channel = pl::csr::rtio_core::collision_channel_read();
-                error!("RTIO collision involving channel 0x{:04x}:{}", channel, rtio_mgt::resolve_channel_name(channel as u32));
+                error!(
+                    "RTIO collision involving channel 0x{:04x}:{}",
+                    channel,
+                    rtio_mgt::resolve_channel_name(channel as u32)
+                );
             }
             if errors & ASYNC_ERROR_BUSY != 0 {
                 let channel = pl::csr::rtio_core::busy_channel_read();
-                error!("RTIO busy error involving channel 0x{:04x}:{}", channel, rtio_mgt::resolve_channel_name(channel as u32));
+                error!(
+                    "RTIO busy error involving channel 0x{:04x}:{}",
+                    channel,
+                    rtio_mgt::resolve_channel_name(channel as u32)
+                );
             }
             if errors & ASYNC_ERROR_SEQUENCE_ERROR != 0 {
                 let channel = pl::csr::rtio_core::sequence_error_channel_read();
-                error!("RTIO sequence error involving channel 0x{:04x}:{}", channel, rtio_mgt::resolve_channel_name(channel as u32));
+                error!(
+                    "RTIO sequence error involving channel 0x{:04x}:{}",
+                    channel,
+                    rtio_mgt::resolve_channel_name(channel as u32)
+                );
             }
             SEEN_ASYNC_ERRORS = errors;
             pl::csr::rtio_core::async_error_write(errors);
@@ -90,18 +101,14 @@ async fn report_async_rtio_errors() {
     }
 }
 
-
+static mut LOG_BUFFER: [u8; 1 << 17] = [0; 1 << 17];
-
-static mut LOG_BUFFER: [u8; 1<<17] = [0; 1<<17];
 
 #[no_mangle]
 pub fn main_core0() {
     enable_l2_cache(0x8);
     let mut timer = GlobalTimer::start();
 
-    let buffer_logger = unsafe {
+    let buffer_logger = unsafe { logger::BufferLogger::new(&mut LOG_BUFFER[..]) };
-        logger::BufferLogger::new(&mut LOG_BUFFER[..])
-    };
     buffer_logger.set_uart_log_level(log::LevelFilter::Info);
     buffer_logger.register();
     log::set_max_level(log::LevelFilter::Info);

src/runtime/src/mgmt.rs

@@ -1,16 +1,17 @@
+use alloc::{rc::Rc, string::String, vec::Vec};
+use core::cell::RefCell;
+
 use futures::{future::poll_fn, task::Poll};
 use libasync::{smoltcp::TcpStream, task};
-use libboard_zynq::{smoltcp, slcr};
-use libconfig::Config;
-use core::cell::RefCell;
-use alloc::{rc::Rc, vec::Vec, string::String};
-use log::{self, info, debug, warn, error, LevelFilter};
-
 use libboard_artiq::logger::{BufferLogger, LogBufferRef};
-use crate::proto_async::*;
+use libboard_zynq::{slcr, smoltcp};
+use libconfig::Config;
+use log::{self, debug, error, info, warn, LevelFilter};
 use num_derive::FromPrimitive;
 use num_traits::FromPrimitive;
 
+use crate::proto_async::*;
+
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub enum Error {
     NetworkError(smoltcp::Error),
@@ -74,9 +75,7 @@ async fn read_log_level_filter(stream: &mut TcpStream) -> Result<log::LevelFilte
 }
 
 async fn get_logger_buffer_pred<F>(f: F) -> LogBufferRef<'static>
-where
+where F: Fn(&LogBufferRef) -> bool {
-    F: Fn(&LogBufferRef) -> bool,
-{
     poll_fn(|ctx| {
         let logger = unsafe { BufferLogger::get_logger().as_mut().unwrap() };
         match logger.buffer() {
@@ -112,10 +111,7 @@ async fn read_key(stream: &mut TcpStream) -> Result<String> {
     Ok(String::from_utf8(buffer).unwrap())
 }
 
-async fn handle_connection(
+async fn handle_connection(stream: &mut TcpStream, pull_id: Rc<RefCell<u32>>, cfg: Rc<Config>) -> Result<()> {
-    stream: &mut TcpStream,
-    pull_id: Rc<RefCell<u32>>,
-    cfg: Rc<Config>) -> Result<()> {
     if !expect(&stream, b"ARTIQ management\n").await? {
         return Err(Error::UnexpectedPattern);
     }
@@ -163,7 +159,7 @@ async fn handle_connection(
                         logger.set_buffer_log_level(LevelFilter::Trace);
                     }
                 }
-            },
+            }
             Request::SetLogFilter => {
                 let lvl = read_log_level_filter(stream).await?;
                 info!("Changing log level to {}", lvl);
@@ -174,10 +170,7 @@ async fn handle_connection(
                 let lvl = read_log_level_filter(stream).await?;
                 info!("Changing UART log level to {}", lvl);
                 unsafe {
-                    BufferLogger::get_logger()
+                    BufferLogger::get_logger().as_ref().unwrap().set_uart_log_level(lvl);
-                        .as_ref()
-                        .unwrap()
-                        .set_uart_log_level(lvl);
                 }
                 write_i8(stream, Reply::Success as i8).await?;
             }
@@ -193,16 +186,12 @@ async fn handle_connection(
                     warn!("read error: no such key");
                     write_i8(stream, Reply::Error as i8).await?;
                 }
-            },
+            }
             Request::ConfigWrite => {
                 let key = read_key(stream).await?;
                 debug!("write key: {}", key);
                 let len = read_i32(stream).await?;
-                let len = if len <= 0 {
+                let len = if len <= 0 { 0 } else { len as usize };
-                    0
-                } else {
-                    len as usize
-                };
                 let mut buffer = Vec::with_capacity(len);
                 unsafe {
                     buffer.set_len(len);
@@ -217,7 +206,7 @@ async fn handle_connection(
                     error!("failed to write: {:?}", value);
                     write_i8(stream, Reply::Error as i8).await?;
                 }
-            },
+            }
             Request::ConfigRemove => {
                 let key = read_key(stream).await?;
                 debug!("erase key: {}", key);
@@ -229,7 +218,7 @@ async fn handle_connection(
                     warn!("erase failed");
                     write_i8(stream, Reply::Error as i8).await?;
                 }
-            },
+            }
             Request::Reboot => {
                 info!("rebooting");
                 write_i8(stream, Reply::RebootImminent as i8).await?;

src/runtime/src/moninj.rs

@@ -1,26 +1,23 @@
-use core::{fmt, cell::RefCell};
 use alloc::{collections::BTreeMap, rc::Rc};
-use log::{debug, info, warn};
+use core::{cell::RefCell, fmt};
-use void::Void;
 
+use futures::{pin_mut, select_biased, FutureExt};
+use libasync::{block_async, nb, smoltcp::TcpStream, task};
 use libboard_artiq::drtio_routing;
-
+use libboard_zynq::{smoltcp, time::Milliseconds, timer::GlobalTimer};
-use libboard_zynq::{smoltcp, timer::GlobalTimer, time::Milliseconds};
-use libasync::{task, smoltcp::TcpStream, block_async, nb};
 use libcortex_a9::mutex::Mutex;
-
+use log::{debug, info, warn};
 use num_derive::{FromPrimitive, ToPrimitive};
 use num_traits::{FromPrimitive, ToPrimitive};
-use futures::{pin_mut, select_biased, FutureExt};
+use void::Void;
 
 use crate::proto_async::*;
 
-
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub enum Error {
     NetworkError(smoltcp::Error),
     UnexpectedPattern,
-    UnrecognizedPacket
+    UnrecognizedPacket,
 }
 
 pub type Result<T> = core::result::Result<T, Error>;
@@ -46,60 +43,102 @@ enum HostMessage {
     MonitorProbe = 0,
     MonitorInjection = 3,
     Inject = 1,
-    GetInjectionStatus = 2
+    GetInjectionStatus = 2,
 }
 
 #[derive(Debug, FromPrimitive, ToPrimitive)]
 enum DeviceMessage {
     MonitorStatus = 0,
-    InjectionStatus = 1
+    InjectionStatus = 1,
 }
 
 #[cfg(has_drtio)]
 mod remote_moninj {
-    use super::*;
     use libboard_artiq::drtioaux_async;
-    use crate::rtio_mgt::drtio;
     use log::error;
 
-    pub async fn read_probe(aux_mutex: &Rc<Mutex<bool>>, timer: GlobalTimer, linkno: u8, destination: u8, channel: i32, probe: i8) -> i64 {
+    use super::*;
-        let reply = drtio::aux_transact(aux_mutex, linkno, &drtioaux_async::Packet::MonitorRequest { 
+    use crate::rtio_mgt::drtio;
+
+    pub async fn read_probe(
+        aux_mutex: &Rc<Mutex<bool>>,
+        timer: GlobalTimer,
+        linkno: u8,
+        destination: u8,
+        channel: i32,
+        probe: i8,
+    ) -> i64 {
+        let reply = drtio::aux_transact(
+            aux_mutex,
+            linkno,
+            &drtioaux_async::Packet::MonitorRequest {
                 destination: destination,
                 channel: channel as _,
-            probe: probe as _},
+                probe: probe as _,
-            timer).await;
+            },
+            timer,
+        )
+        .await;
         match reply {
             Ok(drtioaux_async::Packet::MonitorReply { value }) => return value as i64,
             Ok(packet) => error!("received unexpected aux packet: {:?}", packet),
-            Err("link went down") => { debug!("link is down"); },
+            Err("link went down") => {
-            Err(e) => error!("aux packet error ({})", e)
+                debug!("link is down");
+            }
+            Err(e) => error!("aux packet error ({})", e),
         }
         0
     }
 
-    pub async fn inject(aux_mutex: &Rc<Mutex<bool>>, _timer: GlobalTimer, linkno: u8, destination: u8, channel: i32, overrd: i8, value: i8) {
+    pub async fn inject(
+        aux_mutex: &Rc<Mutex<bool>>,
+        _timer: GlobalTimer,
+        linkno: u8,
+        destination: u8,
+        channel: i32,
+        overrd: i8,
+        value: i8,
+    ) {
         let _lock = aux_mutex.lock();
-        drtioaux_async::send(linkno, &drtioaux_async::Packet::InjectionRequest {
+        drtioaux_async::send(
+            linkno,
+            &drtioaux_async::Packet::InjectionRequest {
                 destination: destination,
                 channel: channel as _,
                 overrd: overrd as _,
-            value: value as _
+                value: value as _,
-        }).await.unwrap();
+            },
+        )
+        .await
+        .unwrap();
     }
 
-    pub async fn read_injection_status(aux_mutex: &Rc<Mutex<bool>>, timer: GlobalTimer, linkno: u8, destination: u8, channel: i32, overrd: i8) -> i8 {
+    pub async fn read_injection_status(
-        let reply = drtio::aux_transact(aux_mutex, 
+        aux_mutex: &Rc<Mutex<bool>>,
+        timer: GlobalTimer,
+        linkno: u8,
+        destination: u8,
+        channel: i32,
+        overrd: i8,
+    ) -> i8 {
+        let reply = drtio::aux_transact(
+            aux_mutex,
             linkno,
             &drtioaux_async::Packet::InjectionStatusRequest {
                 destination: destination,
                 channel: channel as _,
-                overrd: overrd as _},
+                overrd: overrd as _,
-            timer).await;
+            },
+            timer,
+        )
+        .await;
         match reply {
             Ok(drtioaux_async::Packet::InjectionStatusReply { value }) => return value as i8,
             Ok(packet) => error!("received unexpected aux packet: {:?}", packet),
-            Err("link went down") => { debug!("link is down"); },
+            Err("link went down") => {
-            Err(e) => error!("aux packet error ({})", e)
+                debug!("link is down");
+            }
+            Err(e) => error!("aux packet error ({})", e),
         }
         0
     }
@@ -157,8 +196,12 @@ macro_rules! dispatch {
     }}
 }
 
-async fn handle_connection(stream: &TcpStream, timer: GlobalTimer, 
+async fn handle_connection(
-        _aux_mutex: &Rc<Mutex<bool>>, _routing_table: &drtio_routing::RoutingTable) -> Result<()> {
+    stream: &TcpStream,
+    timer: GlobalTimer,
+    _aux_mutex: &Rc<Mutex<bool>>,
+    _routing_table: &drtio_routing::RoutingTable,
+) -> Result<()> {
     if !expect(&stream, b"ARTIQ moninj\n").await? {
         return Err(Error::UnexpectedPattern);
     }

src/runtime/src/panic.rs

@@ -1,14 +1,13 @@
-use libboard_zynq::{print, println};
-use libregister::RegisterR;
-use libcortex_a9::regs::MPIDR;
-use unwind::backtrace;
-
 #[cfg(feature = "target_kasli_soc")]
 use libboard_zynq::error_led::ErrorLED;
-use crate::comms::soft_panic_main;
+use libboard_zynq::{print, println, timer::GlobalTimer};
-use log::error;
-use libboard_zynq::timer::GlobalTimer;
 use libconfig::Config;
+use libcortex_a9::regs::MPIDR;
+use libregister::RegisterR;
+use log::error;
+use unwind::backtrace;
+
+use crate::comms::soft_panic_main;
 
 static mut PANICKED: [bool; 2] = [false; 2];
 static mut SOFT_PANICKED: bool = false;
@@ -68,9 +67,7 @@ fn soft_panic(info: &core::panic::PanicInfo) -> ! {
     let timer = GlobalTimer::start();
     let cfg = match Config::new() {
         Ok(cfg) => cfg,
-        Err(_) => {
+        Err(_) => Config::new_dummy(),
-            Config::new_dummy()
-        }
     };
     soft_panic_main(timer, cfg);
 }

src/runtime/src/proto_async.rs

@@ -1,8 +1,7 @@
-use core::cmp::min;
+use core::{cell::RefCell, cmp::min};
-use core::cell::RefCell;
 
-use libboard_zynq::smoltcp;
 use libasync::smoltcp::TcpStream;
+use libboard_zynq::smoltcp;
 
 type Result<T> = core::result::Result<T, smoltcp::Error>;
 
@@ -14,7 +13,8 @@ enum RecvState<T> {
 pub async fn expect(stream: &TcpStream, pattern: &[u8]) -> Result<bool> {
     let mut state = RecvState::NeedsMore(0, true);
     loop {
-        state = stream.recv(|buf| {
+        state = stream
+            .recv(|buf| {
                 let mut consumed = 0;
                 if let RecvState::NeedsMore(mut cur_index, _) = state {
                     for b in buf.iter() {
@@ -32,7 +32,8 @@ pub async fn expect(stream: &TcpStream, pattern: &[u8]) -> Result<bool> {
                 } else {
                     unreachable!();
                 }
-        }).await?;
+            })
+            .await?;
         if let RecvState::Completed(result) = state {
             return Ok(result);
         }
@@ -40,15 +41,11 @@ pub async fn expect(stream: &TcpStream, pattern: &[u8]) -> Result<bool> {
 }
 
 pub async fn read_bool(stream: &TcpStream) -> Result<bool> {
-    Ok(stream.recv(|buf| {
+    Ok(stream.recv(|buf| (1, buf[0] != 0)).await?)
-        (1, buf[0] != 0)
-    }).await?)
 }
 
 pub async fn read_i8(stream: &TcpStream) -> Result<i8> {
-    Ok(stream.recv(|buf| {
+    Ok(stream.recv(|buf| (1, buf[0] as i8)).await?)
-        (1, buf[0] as i8)
-    }).await?)
 }
 
 pub async fn read_i32(stream: &TcpStream) -> Result<i32> {
@@ -68,12 +65,14 @@ pub async fn read_chunk(stream: &TcpStream, destination: &mut [u8]) -> Result<()
     let destination = RefCell::new(destination);
     let mut done = 0;
     while done < total {
-        let count = stream.recv(|buf| {
+        let count = stream
+            .recv(|buf| {
                 let mut destination = destination.borrow_mut();
                 let count = min(total - done, buf.len());
                 destination[done..done + count].copy_from_slice(&buf[..count]);
                 (count, count)
-        }).await?;
+            })
+            .await?;
         done += count;
     }
     Ok(())

src/runtime/src/rpc.rs

@@ -1,18 +1,17 @@
-use core::str;
-use core::future::Future;
-use cslice::{CSlice, CMutSlice};
-use log::trace;
-use byteorder::{NativeEndian, ByteOrder};
-
-use core_io::{Write, Error};
-use libboard_zynq::smoltcp;
-use libasync::smoltcp::TcpStream;
 use alloc::boxed::Box;
-use async_recursion::async_recursion;
+use core::{future::Future, str};
 
+use async_recursion::async_recursion;
+use byteorder::{ByteOrder, NativeEndian};
+use core_io::{Error, Write};
+use cslice::{CMutSlice, CSlice};
 use io::proto::ProtoWrite;
+use libasync::smoltcp::TcpStream;
+use libboard_zynq::smoltcp;
+use log::trace;
+
+use self::tag::{split_tag, Tag, TagIterator};
 use crate::proto_async;
-use self::tag::{Tag, TagIterator, split_tag};
 
 #[inline]
 fn round_up(val: usize, power_of_two: usize) -> usize {
@@ -52,17 +51,17 @@ async unsafe fn recv_elements<F>(
     elt_tag: Tag<'async_recursion>,
     length: usize,
     storage: *mut (),
-    alloc: &(impl Fn(usize) -> F + 'async_recursion)
+    alloc: &(impl Fn(usize) -> F + 'async_recursion),
 ) -> Result<(), smoltcp::Error>
 where
-    F: Future<Output=*mut ()>,
+    F: Future<Output = *mut ()>,
 {
     // List of simple types are special-cased in the protocol for performance.
     match elt_tag {
         Tag::Bool => {
             let dest = core::slice::from_raw_parts_mut(storage as *mut u8, length);
             proto_async::read_chunk(stream, dest).await?;
-        },
+        }
         Tag::Int32 => {
             let ptr = storage as *mut u32;
             let dest = core::slice::from_raw_parts_mut(ptr as *mut u8, length * 4);
@@ -70,7 +69,7 @@ where
             drop(dest);
             let dest = core::slice::from_raw_parts_mut(ptr, length);
             NativeEndian::from_slice_u32(dest);
-        },
+        }
         Tag::Int64 | Tag::Float64 => {
             let ptr = storage as *mut u64;
             let dest = core::slice::from_raw_parts_mut(ptr as *mut u8, length * 8);
@@ -78,7 +77,7 @@ where
             drop(dest);
             let dest = core::slice::from_raw_parts_mut(ptr, length);
             NativeEndian::from_slice_u64(dest);
-        },
+        }
         _ => {
             let mut data = storage;
             for _ in 0..length {
@@ -95,33 +94,34 @@ where
 /// invoked any number of times with the size of the required allocation as a parameter
 /// (which is assumed to be correctly aligned for all payload types).
 #[async_recursion(?Send)]
-async unsafe fn recv_value<F>(stream: &TcpStream, tag: Tag<'async_recursion>, data: &mut *mut (),
+async unsafe fn recv_value<F>(
-                              alloc: &(impl Fn(usize) -> F + 'async_recursion))
+    stream: &TcpStream,
-                             -> Result<(), smoltcp::Error>
+    tag: Tag<'async_recursion>,
-                          where F: Future<Output=*mut ()>
+    data: &mut *mut (),
+    alloc: &(impl Fn(usize) -> F + 'async_recursion),
+) -> Result<(), smoltcp::Error>
+where
+    F: Future<Output = *mut ()>,
 {
     macro_rules! consume_value {
-        ($ty:ty, |$ptr:ident| $map:expr) => ({
+        ($ty:ty, | $ptr:ident | $map:expr) => {{
             let $ptr = align_ptr_mut::<$ty>(*data);
             *data = $ptr.offset(1) as *mut ();
             $map
-        })
+        }};
     }
 
     match tag {
         Tag::None => Ok(()),
-        Tag::Bool =>
+        Tag::Bool => consume_value!(i8, |ptr| {
-            consume_value!(i8, |ptr| {
             *ptr = proto_async::read_i8(stream).await?;
             Ok(())
         }),
-        Tag::Int32 =>
+        Tag::Int32 => consume_value!(i32, |ptr| {
-            consume_value!(i32, |ptr| {
             *ptr = proto_async::read_i32(stream).await?;
             Ok(())
         }),
-        Tag::Int64 | Tag::Float64 =>
+        Tag::Int64 | Tag::Float64 => consume_value!(i64, |ptr| {
-            consume_value!(i64, |ptr| {
             *ptr = proto_async::read_i64(stream).await?;
             Ok(())
         }),
@@ -148,7 +148,10 @@ async unsafe fn recv_value<F>(stream: &TcpStream, tag: Tag<'async_recursion>, da
         }
         Tag::List(it) => {
             #[repr(C)]
-            struct List { elements: *mut (), length: usize }
+            struct List {
+                elements: *mut (),
+                length: usize,
+            }
             consume_value!(*mut List, |ptr_to_list| {
                 let tag = it.clone().next().expect("truncated tag");
                 let length = proto_async::read_i32(stream).await? as usize;
@@ -180,7 +183,7 @@ async unsafe fn recv_value<F>(stream: &TcpStream, tag: Tag<'async_recursion>, da
                 for _ in 0..num_dims {
                     let len = proto_async::read_i32(stream).await? as usize;
                     total_len *= len;
-                    consume_value!(usize, |ptr| *ptr = len )
+                    consume_value!(usize, |ptr| *ptr = len)
                 }
 
                 // Allocate backing storage for elements; deserialize them.
@@ -198,14 +201,18 @@ async unsafe fn recv_value<F>(stream: &TcpStream, tag: Tag<'async_recursion>, da
             Ok(())
         }
         Tag::Keyword(_) => unreachable!(),
-        Tag::Object => unreachable!()
+        Tag::Object => unreachable!(),
     }
 }
 
-pub async fn recv_return<F>(stream: &TcpStream, tag_bytes: &[u8], data: *mut (),
+pub async fn recv_return<F>(
-                            alloc: &impl Fn(usize) -> F)
+    stream: &TcpStream,
-                           -> Result<(), smoltcp::Error>
+    tag_bytes: &[u8],
-                        where F: Future<Output=*mut ()>
+    data: *mut (),
+    alloc: &impl Fn(usize) -> F,
+) -> Result<(), smoltcp::Error>
+where
+    F: Future<Output = *mut ()>,
 {
     let mut it = TagIterator::new(tag_bytes);
     trace!("recv ...->{}", it);
@@ -217,10 +224,8 @@ pub async fn recv_return<F>(stream: &TcpStream, tag_bytes: &[u8], data: *mut (),
     Ok(())
 }
 
-unsafe fn send_elements<W>(writer: &mut W, elt_tag: Tag, length: usize, data: *const ())
+unsafe fn send_elements<W>(writer: &mut W, elt_tag: Tag, length: usize, data: *const ()) -> Result<(), Error>
-                          -> Result<(), Error>
+where W: Write + ?Sized {
-    where W: Write + ?Sized
-{
     writer.write_u8(elt_tag.as_u8())?;
     match elt_tag {
         // we cannot use NativeEndian::from_slice_i32 as the data is not mutable,
@@ -228,15 +233,15 @@ unsafe fn send_elements<W>(writer: &mut W, elt_tag: Tag, length: usize, data: *c
         Tag::Bool => {
             let slice = core::slice::from_raw_parts(data as *const u8, length);
             writer.write_all(slice)?;
-        },
+        }
         Tag::Int32 => {
             let slice = core::slice::from_raw_parts(data as *const u8, length * 4);
             writer.write_all(slice)?;
-        },
+        }
         Tag::Int64 | Tag::Float64 => {
             let slice = core::slice::from_raw_parts(data as *const u8, length * 8);
             writer.write_all(slice)?;
-        },
+        }
         _ => {
             let mut data = data;
             for _ in 0..length {
@@ -247,36 +252,26 @@ unsafe fn send_elements<W>(writer: &mut W, elt_tag: Tag, length: usize, data: *c
     Ok(())
 }
 
-unsafe fn send_value<W>(writer: &mut W, tag: Tag, data: &mut *const ())
+unsafe fn send_value<W>(writer: &mut W, tag: Tag, data: &mut *const ()) -> Result<(), Error>
-                       -> Result<(), Error>
+where W: Write + ?Sized {
-    where W: Write + ?Sized
-{
     macro_rules! consume_value {
-        ($ty:ty, |$ptr:ident| $map:expr) => ({
+        ($ty:ty, | $ptr:ident | $map:expr) => {{
             let $ptr = align_ptr::<$ty>(*data);
             *data = $ptr.offset(1) as *const ();
             $map
-        })
+        }};
     }
 
     writer.write_u8(tag.as_u8())?;
     match tag {
         Tag::None => Ok(()),
-        Tag::Bool =>
+        Tag::Bool => consume_value!(u8, |ptr| writer.write_u8(*ptr)),
-            consume_value!(u8, |ptr|
+        Tag::Int32 => consume_value!(u32, |ptr| writer.write_u32(*ptr)),
-                writer.write_u8(*ptr)),
+        Tag::Int64 | Tag::Float64 => consume_value!(u64, |ptr| writer.write_u64(*ptr)),
-        Tag::Int32 =>
+        Tag::String => consume_value!(CSlice<u8>, |ptr| {
-            consume_value!(u32, |ptr|
+            writer.write_string(str::from_utf8((*ptr).as_ref()).unwrap())
-                writer.write_u32(*ptr)),
+        }),
-        Tag::Int64 | Tag::Float64 =>
+        Tag::Bytes | Tag::ByteArray => consume_value!(CSlice<u8>, |ptr| writer.write_bytes((*ptr).as_ref())),
-            consume_value!(u64, |ptr|
-                writer.write_u64(*ptr)),
-        Tag::String =>
-            consume_value!(CSlice<u8>, |ptr|
-                writer.write_string(str::from_utf8((*ptr).as_ref()).unwrap())),
-        Tag::Bytes | Tag::ByteArray =>
-            consume_value!(CSlice<u8>, |ptr|
-                writer.write_bytes((*ptr).as_ref())),
         Tag::Tuple(it, arity) => {
             let mut it = it.clone();
             writer.write_u8(arity)?;
@@ -291,7 +286,10 @@ unsafe fn send_value<W>(writer: &mut W, tag: Tag, data: &mut *const ())
         }
         Tag::List(it) => {
             #[repr(C)]
-            struct List { elements: *const (), length: u32 }
+            struct List {
+                elements: *const (),
+                length: u32,
+            }
             consume_value!(&List, |ptr| {
                 let length = (**ptr).length as usize;
                 writer.write_u32((*ptr).length)?;
@@ -301,7 +299,7 @@ unsafe fn send_value<W>(writer: &mut W, tag: Tag, data: &mut *const ())
         }
         Tag::Array(it, num_dims) => {
             writer.write_u8(num_dims)?;
-            consume_value!(*const(), |buffer| {
+            consume_value!(*const (), |buffer| {
                 let elt_tag = it.clone().next().expect("truncated tag");
 
                 let mut total_len = 1;
@@ -324,7 +322,9 @@ unsafe fn send_value<W>(writer: &mut W, tag: Tag, data: &mut *const ())
         }
         Tag::Keyword(it) => {
             #[repr(C)]
-            struct Keyword<'a> { name: CSlice<'a, u8> }
+            struct Keyword<'a> {
+                name: CSlice<'a, u8>,
+            }
             consume_value!(Keyword, |ptr| {
                 writer.write_string(str::from_utf8((*ptr).name.as_ref()).unwrap())?;
                 let tag = it.clone().next().expect("truncated tag");
@@ -336,17 +336,16 @@ unsafe fn send_value<W>(writer: &mut W, tag: Tag, data: &mut *const ())
         }
         Tag::Object => {
             #[repr(C)]
-            struct Object { id: u32 }
+            struct Object {
-            consume_value!(*const Object, |ptr|
+                id: u32,
-                writer.write_u32((**ptr).id))
+            }
+            consume_value!(*const Object, |ptr| writer.write_u32((**ptr).id))
         }
     }
 }
 
-pub fn send_args<W>(writer: &mut W, service: u32, tag_bytes: &[u8], data: *const *const ())
+pub fn send_args<W>(writer: &mut W, service: u32, tag_bytes: &[u8], data: *const *const ()) -> Result<(), Error>
-                   -> Result<(), Error>
+where W: Write + ?Sized {
-    where W: Write + ?Sized
-{
     let (arg_tags_bytes, return_tag_bytes) = split_tag(tag_bytes);
 
     let mut args_it = TagIterator::new(arg_tags_bytes);
@@ -359,7 +358,7 @@ pub fn send_args<W>(writer: &mut W, service: u32, tag_bytes: &[u8], data: *const
             let mut data = unsafe { *data.offset(index) };
             unsafe { send_value(writer, arg_tag, &mut data)? };
         } else {
-            break
+            break;
         }
     }
     writer.write_u8(0)?;
@@ -372,8 +371,8 @@ mod tag {
     use core::fmt;
 
     pub fn split_tag(tag_bytes: &[u8]) -> (&[u8], &[u8]) {
-        let tag_separator =
+        let tag_separator = tag_bytes
-            tag_bytes.iter()
+            .iter()
             .position(|&b| b == b':')
             .expect("tag without a return separator");
         let (arg_tags_bytes, rest) = tag_bytes.split_at(tag_separator);
@@ -396,7 +395,7 @@ mod tag {
         Array(TagIterator<'a>, u8),
         Range(TagIterator<'a>),
         Keyword(TagIterator<'a>),
-        Object
+        Object,
     }
 
     impl<'a> Tag<'a> {
@@ -431,14 +430,15 @@ mod tag {
                 Tag::Tuple(it, arity) => {
                     let it = it.clone();
                     it.take(arity.into()).map(|t| t.alignment()).max().unwrap()
-                },
+                }
                 Tag::Range(it) => {
                     let it = it.clone();
                     it.take(3).map(|t| t.alignment()).max().unwrap()
                 }
                 // the ptr/length(s) pair is basically CSlice
-                Tag::Bytes | Tag::String | Tag::ByteArray | Tag::List(_) | Tag::Array(_, _) =>
+                Tag::Bytes | Tag::String | Tag::ByteArray | Tag::List(_) | Tag::Array(_, _) => {
-                    core::mem::align_of::<CSlice<()>>(),
+                    core::mem::align_of::<CSlice<()>>()
+                }
                 Tag::Keyword(_) => unreachable!("Tag::Keyword should not appear in composite types"),
                 Tag::Object => core::mem::align_of::<u32>(),
             }
@@ -484,7 +484,7 @@ mod tag {
 
     #[derive(Debug, Clone, Copy)]
     pub struct TagIterator<'a> {
-        data: &'a [u8]
+        data: &'a [u8],
     }
 
     impl<'a> TagIterator<'a> {
@@ -492,13 +492,14 @@ mod tag {
             TagIterator { data }
         }
 
-
         fn sub(&mut self, count: u8) -> TagIterator<'a> {
             let data = self.data;
             for _ in 0..count {
                 self.next().expect("truncated tag");
             }
-            TagIterator { data: &data[..(data.len() - self.data.len())] }
+            TagIterator {
+                data: &data[..(data.len() - self.data.len())],
+            }
         }
     }
 
@@ -507,7 +508,7 @@ mod tag {
 
         fn next(&mut self) -> Option<Tag<'a>> {
             if self.data.len() == 0 {
-                return None
+                return None;
             }
 
             let tag_byte = self.data[0];
@@ -535,7 +536,7 @@ mod tag {
                 b'r' => Tag::Range(self.sub(1)),
                 b'k' => Tag::Keyword(self.sub(1)),
                 b'O' => Tag::Object,
-                _    => unreachable!()
+                _ => unreachable!(),
             })
         }
     }
@@ -552,22 +553,14 @@ mod tag {
                 }
 
                 match tag {
-                    Tag::None =>
+                    Tag::None => write!(f, "None")?,
-                        write!(f, "None")?,
+                    Tag::Bool => write!(f, "Bool")?,
-                    Tag::Bool =>
+                    Tag::Int32 => write!(f, "Int32")?,
-                        write!(f, "Bool")?,
+                    Tag::Int64 => write!(f, "Int64")?,
-                    Tag::Int32 =>
+                    Tag::Float64 => write!(f, "Float64")?,
-                        write!(f, "Int32")?,
+                    Tag::String => write!(f, "String")?,
-                    Tag::Int64 =>
+                    Tag::Bytes => write!(f, "Bytes")?,
-                        write!(f, "Int64")?,
+                    Tag::ByteArray => write!(f, "ByteArray")?,
-                    Tag::Float64 =>
-                        write!(f, "Float64")?,
-                    Tag::String =>
-                        write!(f, "String")?,
-                    Tag::Bytes =>
-                        write!(f, "Bytes")?,
-                    Tag::ByteArray =>
-                        write!(f, "ByteArray")?,
                     Tag::Tuple(it, _) => {
                         write!(f, "Tuple(")?;
                         it.fmt(f)?;
@@ -593,8 +586,7 @@ mod tag {
                         it.fmt(f)?;
                         write!(f, ")")?;
                     }
-                    Tag::Object =>
+                    Tag::Object => write!(f, "Object")?,
-                        write!(f, "Object")?,
                 }
             }
 

src/runtime/src/rtio_acp.rs

@@ -1,11 +1,10 @@
-use cslice::CSlice;
-use vcell::VolatileCell;
-use libcortex_a9::asm;
-use crate::artiq_raise;
 use core::sync::atomic::{fence, Ordering};
 
-use crate::pl::csr;
+use cslice::CSlice;
-use crate::rtio_mgt::resolve_channel_name;
+use libcortex_a9::asm;
+use vcell::VolatileCell;
+
+use crate::{artiq_raise, pl::csr, rtio_mgt::resolve_channel_name};
 
 pub const RTIO_O_STATUS_WAIT: i32 = 1;
 pub const RTIO_O_STATUS_UNDERFLOW: i32 = 2;
@@ -47,10 +46,10 @@ static mut TRANSACTION_BUFFER: Transaction = Transaction {
     reply_timestamp: VolatileCell::new(0),
     padding0: [0; 2],
     padding1: [0; 2],
-    padding2: [0; 2]
+    padding2: [0; 2],
 };
 
-pub extern fn init() {
+pub extern "C" fn init() {
     unsafe {
         csr::rtio_core::reset_write(1);
         csr::rtio::engine_addr_base_write(&TRANSACTION_BUFFER as *const Transaction as u32);
@@ -58,7 +57,7 @@ pub extern fn init() {
     }
 }
 
-pub extern fn get_counter() -> i64 {
+pub extern "C" fn get_counter() -> i64 {
     unsafe {
         csr::rtio::counter_update_write(1);
         csr::rtio::counter_read() as i64
@@ -67,15 +66,15 @@ pub extern fn get_counter() -> i64 {
 
 static mut NOW: i64 = 0;
 
-pub extern fn now_mu() -> i64 {
+pub extern "C" fn now_mu() -> i64 {
     unsafe { NOW }
 }
 
-pub extern fn at_mu(t: i64) {
+pub extern "C" fn at_mu(t: i64) {
     unsafe { NOW = t }
 }
 
-pub extern fn delay_mu(dt: i64) {
+pub extern "C" fn delay_mu(dt: i64) {
     unsafe { NOW += dt }
 }
 
@@ -87,18 +86,34 @@ unsafe fn process_exceptional_status(channel: i32, status: i32) {
         while csr::rtio::o_status_read() as i32 & RTIO_O_STATUS_WAIT != 0 {}
     }
     if status & RTIO_O_STATUS_UNDERFLOW != 0 {
-        artiq_raise!("RTIOUnderflow",
+        artiq_raise!(
-            format!("RTIO underflow at {{1}} mu, channel 0x{:04x}:{}, slack {{2}} mu", channel, resolve_channel_name(channel as u32)),
+            "RTIOUnderflow",
-                channel as i64, timestamp, timestamp - get_counter());
+            format!(
+                "RTIO underflow at {{1}} mu, channel 0x{:04x}:{}, slack {{2}} mu",
+                channel,
+                resolve_channel_name(channel as u32)
+            ),
+            channel as i64,
+            timestamp,
+            timestamp - get_counter()
+        );
     }
     if status & RTIO_O_STATUS_DESTINATION_UNREACHABLE != 0 {
-        artiq_raise!("RTIODestinationUnreachable",
+        artiq_raise!(
-            format!("RTIO destination unreachable, output, at {{0}} mu, channel 0x{:04x}:{}", channel, resolve_channel_name(channel as u32)),
+            "RTIODestinationUnreachable",
-            timestamp, channel as i64, 0);
+            format!(
+                "RTIO destination unreachable, output, at {{0}} mu, channel 0x{:04x}:{}",
+                channel,
+                resolve_channel_name(channel as u32)
+            ),
+            timestamp,
+            channel as i64,
+            0
+        );
     }
 }
 
-pub extern fn output(target: i32, data: i32) {
+pub extern "C" fn output(target: i32, data: i32) {
     unsafe {
         // Clear status so we can observe response
         TRANSACTION_BUFFER.reply_status.set(0);
@@ -126,7 +141,7 @@ pub extern fn output(target: i32, data: i32) {
     }
 }
 
-pub extern fn output_wide(target: i32, data: CSlice<i32>) {
+pub extern "C" fn output_wide(target: i32, data: CSlice<i32>) {
     unsafe {
         // Clear status so we can observe response
         TRANSACTION_BUFFER.reply_status.set(0);
@@ -143,7 +158,7 @@ pub extern fn output_wide(target: i32, data: CSlice<i32>) {
         loop {
             status = TRANSACTION_BUFFER.reply_status.get();
             if status != 0 {
-                break
+                break;
             }
         }
 
@@ -154,7 +169,7 @@ pub extern fn output_wide(target: i32, data: CSlice<i32>) {
     }
 }
 
-pub extern fn input_timestamp(timeout: i64, channel: i32) -> i64 {
+pub extern "C" fn input_timestamp(timeout: i64, channel: i32) -> i64 {
     unsafe {
         // Clear status so we can observe response
         TRANSACTION_BUFFER.reply_status.set(0);
@@ -171,29 +186,45 @@ pub extern fn input_timestamp(timeout: i64, channel: i32) -> i64 {
         loop {
             status = TRANSACTION_BUFFER.reply_status.get();
             if status != 0 {
-                break
+                break;
             }
         }
 
         if status & RTIO_I_STATUS_OVERFLOW != 0 {
-            artiq_raise!("RTIOOverflow",
+            artiq_raise!(
-                         format!("RTIO input overflow on channel 0x{:04x}:{}", channel, resolve_channel_name(channel as u32)),
+                "RTIOOverflow",
-                         channel as i64, 0, 0);
+                format!(
+                    "RTIO input overflow on channel 0x{:04x}:{}",
+                    channel,
+                    resolve_channel_name(channel as u32)
+                ),
+                channel as i64,
+                0,
+                0
+            );
         }
         if status & RTIO_I_STATUS_WAIT_EVENT != 0 {
-            return -1
+            return -1;
         }
         if status & RTIO_I_STATUS_DESTINATION_UNREACHABLE != 0 {
-            artiq_raise!("RTIODestinationUnreachable",
+            artiq_raise!(
-                         format!("RTIO destination unreachable, input, on channel 0x{:04x}:{}", channel, resolve_channel_name(channel as u32)),
+                "RTIODestinationUnreachable",
-                         channel as i64, 0, 0);
+                format!(
+                    "RTIO destination unreachable, input, on channel 0x{:04x}:{}",
+                    channel,
+                    resolve_channel_name(channel as u32)
+                ),
+                channel as i64,
+                0,
+                0
+            );
         }
 
         TRANSACTION_BUFFER.reply_timestamp.get()
     }
 }
 
-pub extern fn input_data(channel: i32) -> i32 {
+pub extern "C" fn input_data(channel: i32) -> i32 {
     unsafe {
         TRANSACTION_BUFFER.reply_status.set(0);
 
@@ -209,26 +240,42 @@ pub extern fn input_data(channel: i32) -> i32 {
         loop {
             status = TRANSACTION_BUFFER.reply_status.get();
             if status != 0 {
-                break
+                break;
             }
         }
 
         if status & RTIO_I_STATUS_OVERFLOW != 0 {
-            artiq_raise!("RTIOOverflow",
+            artiq_raise!(
-                         format!("RTIO input overflow on channel 0x{:04x}:{}", channel, resolve_channel_name(channel as u32)),
+                "RTIOOverflow",
-                         channel as i64, 0, 0);
+                format!(
+                    "RTIO input overflow on channel 0x{:04x}:{}",
+                    channel,
+                    resolve_channel_name(channel as u32)
+                ),
+                channel as i64,
+                0,
+                0
+            );
         }
         if status & RTIO_I_STATUS_DESTINATION_UNREACHABLE != 0 {
-            artiq_raise!("RTIODestinationUnreachable",
+            artiq_raise!(
-                         format!("RTIO destination unreachable, input, on channel 0x{:04x}:{}", channel, resolve_channel_name(channel as u32)),
+                "RTIODestinationUnreachable",
-                         channel as i64, 0, 0);
+                format!(
+                    "RTIO destination unreachable, input, on channel 0x{:04x}:{}",
+                    channel,
+                    resolve_channel_name(channel as u32)
+                ),
+                channel as i64,
+                0,
+                0
+            );
         }
 
         TRANSACTION_BUFFER.reply_data.get()
     }
 }
 
-pub extern fn input_timestamped_data(timeout: i64, channel: i32) -> TimestampedData {
+pub extern "C" fn input_timestamped_data(timeout: i64, channel: i32) -> TimestampedData {
     unsafe {
         TRANSACTION_BUFFER.reply_status.set(0);
 
@@ -244,19 +291,35 @@ pub extern fn input_timestamped_data(timeout: i64, channel: i32) -> TimestampedD
         loop {
             status = TRANSACTION_BUFFER.reply_status.get();
             if status != 0 {
-                break
+                break;
             }
         }
 
         if status & RTIO_I_STATUS_OVERFLOW != 0 {
-            artiq_raise!("RTIOOverflow",
+            artiq_raise!(
-                         format!("RTIO input overflow on channel 0x{:04x}:{}", channel, resolve_channel_name(channel as u32)),
+                "RTIOOverflow",
-                         channel as i64, 0, 0);
+                format!(
+                    "RTIO input overflow on channel 0x{:04x}:{}",
+                    channel,
+                    resolve_channel_name(channel as u32)
+                ),
+                channel as i64,
+                0,
+                0
+            );
         }
         if status & RTIO_I_STATUS_DESTINATION_UNREACHABLE != 0 {
-            artiq_raise!("RTIODestinationUnreachable",
+            artiq_raise!(
-                         format!("RTIO destination unreachable, input, on channel 0x{:04x}:{}", channel, resolve_channel_name(channel as u32)),
+                "RTIODestinationUnreachable",
-                         channel as i64, 0, 0);
+                format!(
+                    "RTIO destination unreachable, input, on channel 0x{:04x}:{}",
+                    channel,
+                    resolve_channel_name(channel as u32)
+                ),
+                channel as i64,
+                0,
+                0
+            );
         }
 
         TimestampedData {

src/runtime/src/rtio_clocking.rs

@@ -1,14 +1,15 @@
-use log::{info, warn};
-use libboard_zynq::timer::GlobalTimer;
 use embedded_hal::blocking::delay::DelayMs;
-use libconfig::Config;
 use libboard_artiq::pl;
 #[cfg(has_si5324)]
+use libboard_artiq::si5324;
+#[cfg(has_si5324)]
 use libboard_zynq::i2c::I2c;
+use libboard_zynq::timer::GlobalTimer;
+use libconfig::Config;
+use log::{info, warn};
+
 #[cfg(has_si5324)]
 use crate::i2c;
-#[cfg(has_si5324)]
-use libboard_artiq::si5324;
 
 #[derive(Debug, PartialEq, Copy, Clone)]
 #[allow(non_camel_case_types)]
@@ -42,17 +43,16 @@ fn get_rtio_clock_cfg(cfg: &Config) -> RtioClock {
                 RtioClock::Default
             }
         };
-    }
+    } else {
-    else {
         warn!("error reading configuration. Falling back to default.");
     }
     if res == RtioClock::Default {
-        #[cfg(rtio_frequency="100.0")]
+        #[cfg(rtio_frequency = "100.0")]
         {
             warn!("Using default configuration - internal 100MHz RTIO clock.");
             return RtioClock::Int_100;
         }
-        #[cfg(rtio_frequency="125.0")]
+        #[cfg(rtio_frequency = "125.0")]
         {
             warn!("Using default configuration - internal 125MHz RTIO clock.");
             return RtioClock::Int_125;
@@ -85,12 +85,10 @@ fn init_rtio(timer: &mut GlobalTimer) {
         pl::csr::rtio_core::reset_phy_write(1);
     }
     info!("SYS PLL locked");
-    
 }
 
 #[cfg(has_drtio)]
-fn init_drtio(timer: &mut GlobalTimer)
+fn init_drtio(timer: &mut GlobalTimer) {
-{
     unsafe {
         pl::csr::drtio_transceiver::stable_clkin_write(1);
     }
@@ -115,116 +113,126 @@ const SI5324_EXT_INPUT: si5324::Input = si5324::Input::Ckin1;
 #[cfg(has_si5324)]
 fn setup_si5324(i2c: &mut I2c, timer: &mut GlobalTimer, clk: RtioClock) {
     let (si5324_settings, si5324_ref_input) = match clk {
-        RtioClock::Ext0_Synth0_10to125 => { // 125 MHz output from 10 MHz CLKINx reference, 504 Hz BW
+        RtioClock::Ext0_Synth0_10to125 => {
+            // 125 MHz output from 10 MHz CLKINx reference, 504 Hz BW
             info!("using 10MHz reference to make 125MHz RTIO clock with PLL");
             (
                 si5324::FrequencySettings {
-                    n1_hs  : 10,
+                    n1_hs: 10,
-                    nc1_ls : 4,
+                    nc1_ls: 4,
-                    n2_hs  : 10,
+                    n2_hs: 10,
-                    n2_ls  : 300,
+                    n2_ls: 300,
-                    n31    : 6,
+                    n31: 6,
-                    n32    : 6,
+                    n32: 6,
-                    bwsel  : 4,
+                    bwsel: 4,
-                    crystal_as_ckin2: false
+                    crystal_as_ckin2: false,
                 },
-                SI5324_EXT_INPUT
+                SI5324_EXT_INPUT,
             )
-        },
+        }
-        RtioClock::Ext0_Synth0_100to125 => { // 125MHz output, from 100MHz CLKINx reference, 586 Hz loop bandwidth
+        RtioClock::Ext0_Synth0_100to125 => {
+            // 125MHz output, from 100MHz CLKINx reference, 586 Hz loop bandwidth
             info!("using 100MHz reference to make 125MHz RTIO clock with PLL");
             (
                 si5324::FrequencySettings {
-                    n1_hs  : 10,
+                    n1_hs: 10,
-                    nc1_ls : 4,
+                    nc1_ls: 4,
-                    n2_hs  : 10,
+                    n2_hs: 10,
-                    n2_ls  : 260,
+                    n2_ls: 260,
-                    n31    : 52,
+                    n31: 52,
-                    n32    : 52,
+                    n32: 52,
-                    bwsel  : 4,
+                    bwsel: 4,
-                    crystal_as_ckin2: false
+                    crystal_as_ckin2: false,
                 },
-                SI5324_EXT_INPUT
+                SI5324_EXT_INPUT,
             )
-        },
+        }
-        RtioClock::Ext0_Synth0_125to125 => { // 125MHz output, from 125MHz CLKINx reference, 606 Hz loop bandwidth
+        RtioClock::Ext0_Synth0_125to125 => {
+            // 125MHz output, from 125MHz CLKINx reference, 606 Hz loop bandwidth
             info!("using 125MHz reference to make 125MHz RTIO clock with PLL");
             (
                 si5324::FrequencySettings {
-                    n1_hs  : 5,
+                    n1_hs: 5,
-                    nc1_ls : 8,
+                    nc1_ls: 8,
-                    n2_hs  : 7,
+                    n2_hs: 7,
-                    n2_ls  : 360,
+                    n2_ls: 360,
-                    n31    : 63,
+                    n31: 63,
-                    n32    : 63,
+                    n32: 63,
-                    bwsel  : 4,
+                    bwsel: 4,
-                    crystal_as_ckin2: false
+                    crystal_as_ckin2: false,
                 },
-                SI5324_EXT_INPUT
+                SI5324_EXT_INPUT,
             )
-        },
+        }
-        RtioClock::Int_150 => { // 150MHz output, from crystal
+        RtioClock::Int_150 => {
+            // 150MHz output, from crystal
             info!("using internal 150MHz RTIO clock");
             (
                 si5324::FrequencySettings {
-                    n1_hs  : 9,
+                    n1_hs: 9,
-                    nc1_ls : 4,
+                    nc1_ls: 4,
-                    n2_hs  : 10,
+                    n2_hs: 10,
-                    n2_ls  : 33732,
+                    n2_ls: 33732,
-                    n31    : 7139,
+                    n31: 7139,
-                    n32    : 7139,
+                    n32: 7139,
-                    bwsel  : 3,
+                    bwsel: 3,
-                    crystal_as_ckin2: true
+                    crystal_as_ckin2: true,
                 },
-                si5324::Input::Ckin2
+                si5324::Input::Ckin2,
             )
-        },
+        }
-        RtioClock::Int_100 => { // 100MHz output, from crystal
+        RtioClock::Int_100 => {
+            // 100MHz output, from crystal
             info!("using internal 100MHz RTIO clock");
             (
                 si5324::FrequencySettings {
-                    n1_hs  : 9,
+                    n1_hs: 9,
-                    nc1_ls : 6,
+                    nc1_ls: 6,
-                    n2_hs  : 10,
+                    n2_hs: 10,
-                    n2_ls  : 33732,
+                    n2_ls: 33732,
-                    n31    : 7139,
+                    n31: 7139,
-                    n32    : 7139,
+                    n32: 7139,
-                    bwsel  : 3,
+                    bwsel: 3,
-                    crystal_as_ckin2: true
+                    crystal_as_ckin2: true,
                 },
-                si5324::Input::Ckin2
+                si5324::Input::Ckin2,
             )
-        },
+        }
-        RtioClock::Int_125 => { // 125MHz output, from crystal, 7 Hz
+        RtioClock::Int_125 => {
+            // 125MHz output, from crystal, 7 Hz
             info!("using internal 125MHz RTIO clock");
             (
                 si5324::FrequencySettings {
-                    n1_hs  : 10,
+                    n1_hs: 10,
-                    nc1_ls : 4,
+                    nc1_ls: 4,
-                    n2_hs  : 10,
+                    n2_hs: 10,
-                    n2_ls  : 19972,
+                    n2_ls: 19972,
-                    n31    : 4565,
+                    n31: 4565,
-                    n32    : 4565,
+                    n32: 4565,
-                    bwsel  : 4,
+                    bwsel: 4,
-                    crystal_as_ckin2: true
+                    crystal_as_ckin2: true,
                 },
-                si5324::Input::Ckin2
+                si5324::Input::Ckin2,
             )
-        },
+        }
-        _ => { // same setting  as Int_125, but fallback to default
+        _ => {
-            warn!("rtio_clock setting '{:?}' is unsupported. Falling back to default internal 125MHz RTIO clock.", clk);
+            // same setting  as Int_125, but fallback to default
+            warn!(
+                "rtio_clock setting '{:?}' is unsupported. Falling back to default internal 125MHz RTIO clock.",
+                clk
+            );
             (
                 si5324::FrequencySettings {
-                    n1_hs  : 10,
+                    n1_hs: 10,
-                    nc1_ls : 4,
+                    nc1_ls: 4,
-                    n2_hs  : 10,
+                    n2_hs: 10,
-                    n2_ls  : 19972,
+                    n2_ls: 19972,
-                    n31    : 4565,
+                    n31: 4565,
-                    n32    : 4565,
+                    n32: 4565,
-                    bwsel  : 4,
+                    bwsel: 4,
-                    crystal_as_ckin2: true
+                    crystal_as_ckin2: true,
                 },
-                si5324::Input::Ckin2
+                si5324::Input::Ckin2,
             )
         }
     };
@@ -232,7 +240,6 @@ fn setup_si5324(i2c: &mut I2c, timer: &mut GlobalTimer, clk: RtioClock) {
 }
 
 pub fn init(timer: &mut GlobalTimer, cfg: &Config) {
-
     let clk = get_rtio_clock_cfg(cfg);
     #[cfg(has_si5324)]
     {

src/runtime/src/rtio_csr.rs

@@ -1,10 +1,8 @@
 use core::ptr::{read_volatile, write_volatile};
+
 use cslice::CSlice;
 
-use crate::artiq_raise;
+use crate::{artiq_raise, pl::csr, rtio_mgt::resolve_channel_name};
-
-use crate::pl::csr;
-use crate::rtio_mgt::resolve_channel_name;
 
 pub const RTIO_O_STATUS_WAIT: u8 = 1;
 pub const RTIO_O_STATUS_UNDERFLOW: u8 = 2;
@@ -20,32 +18,30 @@ pub struct TimestampedData {
     data: i32,
 }
 
-pub extern fn init() {
+pub extern "C" fn init() {
     unsafe {
         csr::rtio_core::reset_write(1);
     }
 }
 
-pub extern fn get_counter() -> i64 {
+pub extern "C" fn get_counter() -> i64 {
     unsafe {
         csr::rtio::counter_update_write(1);
         csr::rtio::counter_read() as i64
     }
 }
 
-pub extern fn now_mu() -> i64 {
+pub extern "C" fn now_mu() -> i64 {
-    unsafe {
+    unsafe { csr::rtio::now_read() as i64 }
-        csr::rtio::now_read() as i64
-    }
 }
 
-pub extern fn at_mu(t: i64) {
+pub extern "C" fn at_mu(t: i64) {
     unsafe {
         csr::rtio::now_write(t as u64);
     }
 }
 
-pub extern fn delay_mu(dt: i64) {
+pub extern "C" fn delay_mu(dt: i64) {
     unsafe {
         csr::rtio::now_write(csr::rtio::now_read() + dt as u64);
     }
@@ -56,13 +52,13 @@ pub extern fn delay_mu(dt: i64) {
 pub unsafe fn rtio_o_data_write(offset: usize, data: u32) {
     write_volatile(
         csr::rtio::O_DATA_ADDR.offset((csr::rtio::O_DATA_SIZE - 1 - offset) as isize),
-        data);
+        data,
+    );
 }
 
 #[inline(always)]
 pub unsafe fn rtio_i_data_read(offset: usize) -> u32 {
-    read_volatile(
+    read_volatile(csr::rtio::I_DATA_ADDR.offset((csr::rtio::I_DATA_SIZE - 1 - offset) as isize))
-        csr::rtio::I_DATA_ADDR.offset((csr::rtio::I_DATA_SIZE - 1 - offset) as isize))
 }
 
 #[inline(never)]
@@ -72,18 +68,34 @@ unsafe fn process_exceptional_status(channel: i32, status: u8) {
         while csr::rtio::o_status_read() & RTIO_O_STATUS_WAIT != 0 {}
     }
     if status & RTIO_O_STATUS_UNDERFLOW != 0 {
-        artiq_raise!("RTIOUnderflow",
+        artiq_raise!(
-            format!("RTIO underflow at {{1}} mu, channel 0x{:04x}:{}, slack {{2}} mu", channel, resolve_channel_name(channel as u32)),
+            "RTIOUnderflow",
-            channel as i64, timestamp, timestamp - get_counter());
+            format!(
+                "RTIO underflow at {{1}} mu, channel 0x{:04x}:{}, slack {{2}} mu",
+                channel,
+                resolve_channel_name(channel as u32)
+            ),
+            channel as i64,
+            timestamp,
+            timestamp - get_counter()
+        );
     }
     if status & RTIO_O_STATUS_DESTINATION_UNREACHABLE != 0 {
-        artiq_raise!("RTIODestinationUnreachable",
+        artiq_raise!(
-            format!("RTIO destination unreachable, output, at {{0}} mu, channel 0x{:04x}:{}", channel, resolve_channel_name(channel as u32)),
+            "RTIODestinationUnreachable",
-            timestamp, channel as i64, 0);
+            format!(
+                "RTIO destination unreachable, output, at {{0}} mu, channel 0x{:04x}:{}",
+                channel,
+                resolve_channel_name(channel as u32)
+            ),
+            timestamp,
+            channel as i64,
+            0
+        );
     }
 }
 
-pub extern fn output(target: i32, data: i32) {
+pub extern "C" fn output(target: i32, data: i32) {
     unsafe {
         csr::rtio::target_write(target as u32);
         // writing target clears o_data
@@ -95,7 +107,7 @@ pub extern fn output(target: i32, data: i32) {
     }
 }
 
-pub extern fn output_wide(target: i32, data: CSlice<i32>) {
+pub extern "C" fn output_wide(target: i32, data: CSlice<i32>) {
     unsafe {
         csr::rtio::target_write(target as u32);
         // writing target clears o_data
@@ -109,7 +121,7 @@ pub extern fn output_wide(target: i32, data: CSlice<i32>) {
     }
 }
 
-pub extern fn input_timestamp(timeout: i64, channel: i32) -> i64 {
+pub extern "C" fn input_timestamp(timeout: i64, channel: i32) -> i64 {
     unsafe {
         csr::rtio::target_write((channel as u32) << 8);
         csr::rtio::i_timeout_write(timeout as u64);
@@ -120,24 +132,40 @@ pub extern fn input_timestamp(timeout: i64, channel: i32) -> i64 {
         }
 
         if status & RTIO_I_STATUS_OVERFLOW != 0 {
-            artiq_raise!("RTIOOverflow",
+            artiq_raise!(
-                         format!("RTIO input overflow on channel 0x{:04x}:{}", channel, resolve_channel_name(channel as u32)),
+                "RTIOOverflow",
-                         channel as i64, 0, 0);
+                format!(
+                    "RTIO input overflow on channel 0x{:04x}:{}",
+                    channel,
+                    resolve_channel_name(channel as u32)
+                ),
+                channel as i64,
+                0,
+                0
+            );
         }
         if status & RTIO_I_STATUS_WAIT_EVENT != 0 {
-            return -1
+            return -1;
         }
         if status & RTIO_I_STATUS_DESTINATION_UNREACHABLE != 0 {
-            artiq_raise!("RTIODestinationUnreachable",
+            artiq_raise!(
-                         format!("RTIO destination unreachable, input, on channel 0x{:04x}:{}", channel, resolve_channel_name(channel as u32)),
+                "RTIODestinationUnreachable",
-                         channel as i64, 0, 0);
+                format!(
+                    "RTIO destination unreachable, input, on channel 0x{:04x}:{}",
+                    channel,
+                    resolve_channel_name(channel as u32)
+                ),
+                channel as i64,
+                0,
+                0
+            );
         }
 
         csr::rtio::i_timestamp_read() as i64
     }
 }
 
-pub extern fn input_data(channel: i32) -> i32 {
+pub extern "C" fn input_data(channel: i32) -> i32 {
     unsafe {
         csr::rtio::target_write((channel as u32) << 8);
         csr::rtio::i_timeout_write(0xffffffff_ffffffff);
@@ -148,21 +176,37 @@ pub extern fn input_data(channel: i32) -> i32 {
         }
 
         if status & RTIO_I_STATUS_OVERFLOW != 0 {
-            artiq_raise!("RTIOOverflow",
+            artiq_raise!(
-                         format!("RTIO input overflow on channel 0x{:04x}:{}", channel, resolve_channel_name(channel as u32)),
+                "RTIOOverflow",
-                         channel as i64, 0, 0);
+                format!(
+                    "RTIO input overflow on channel 0x{:04x}:{}",
+                    channel,
+                    resolve_channel_name(channel as u32)
+                ),
+                channel as i64,
+                0,
+                0
+            );
         }
         if status & RTIO_I_STATUS_DESTINATION_UNREACHABLE != 0 {
-            artiq_raise!("RTIODestinationUnreachable",
+            artiq_raise!(
-                         format!("RTIO destination unreachable, input, on channel 0x{:04x}:{}", channel, resolve_channel_name(channel as u32)),
+                "RTIODestinationUnreachable",
-                         channel as i64, 0, 0);
+                format!(
+                    "RTIO destination unreachable, input, on channel 0x{:04x}:{}",
+                    channel,
+                    resolve_channel_name(channel as u32)
+                ),
+                channel as i64,
+                0,
+                0
+            );
         }
 
         rtio_i_data_read(0) as i32
     }
 }
 
-pub extern fn input_timestamped_data(timeout: i64, channel: i32) -> TimestampedData {
+pub extern "C" fn input_timestamped_data(timeout: i64, channel: i32) -> TimestampedData {
     unsafe {
         csr::rtio::target_write((channel as u32) << 8);
         csr::rtio::i_timeout_write(timeout as u64);
@@ -173,22 +217,38 @@ pub extern fn input_timestamped_data(timeout: i64, channel: i32) -> TimestampedD
         }
 
         if status & RTIO_I_STATUS_OVERFLOW != 0 {
-            artiq_raise!("RTIOOverflow",
+            artiq_raise!(
-                         format!("RTIO input overflow on channel 0x{:04x}:{}", channel, resolve_channel_name(channel as u32)),
+                "RTIOOverflow",
-                         channel as i64, 0, 0);
+                format!(
+                    "RTIO input overflow on channel 0x{:04x}:{}",
+                    channel,
+                    resolve_channel_name(channel as u32)
+                ),
+                channel as i64,
+                0,
+                0
+            );
         }
         if status & RTIO_I_STATUS_WAIT_EVENT != 0 {
-            return TimestampedData { timestamp: -1, data: 0 }
+            return TimestampedData { timestamp: -1, data: 0 };
         }
         if status & RTIO_I_STATUS_DESTINATION_UNREACHABLE != 0 {
-            artiq_raise!("RTIODestinationUnreachable",
+            artiq_raise!(
-                         format!("RTIO destination unreachable, input, on channel 0x{:04x}:{}", channel, resolve_channel_name(channel as u32)),
+                "RTIODestinationUnreachable",
-                         channel as i64, 0, 0);
+                format!(
+                    "RTIO destination unreachable, input, on channel 0x{:04x}:{}",
+                    channel,
+                    resolve_channel_name(channel as u32)
+                ),
+                channel as i64,
+                0,
+                0
+            );
         }
 
         TimestampedData {
             timestamp: csr::rtio::i_timestamp_read() as i64,
-            data: rtio_i_data_read(0) as i32
+            data: rtio_i_data_read(0) as i32,
         }
     }
 }

src/runtime/src/rtio_mgt.rs

@@ -1,33 +1,32 @@
+use alloc::{collections::BTreeMap, rc::Rc, string::String};
 use core::cell::RefCell;
-use alloc::rc::Rc;
+
-use alloc::collections::BTreeMap;
-use alloc::string::String;
-use libboard_zynq::timer::GlobalTimer;
-use libboard_artiq::{pl::csr, drtio_routing};
-use libcortex_a9::mutex::Mutex;
-use libconfig::Config;
 use io::{Cursor, ProtoRead};
+use libboard_artiq::{drtio_routing, pl::csr};
+use libboard_zynq::timer::GlobalTimer;
+use libconfig::Config;
+use libcortex_a9::mutex::Mutex;
 use log::error;
 
 static mut RTIO_DEVICE_MAP: BTreeMap<u32, String> = BTreeMap::new();
 
-
 #[cfg(has_drtio)]
 pub mod drtio {
-    use super::*;
-    use crate::{SEEN_ASYNC_ERRORS, ASYNC_ERROR_BUSY, ASYNC_ERROR_SEQUENCE_ERROR, ASYNC_ERROR_COLLISION};
-    use libboard_artiq::drtioaux_async;
-    use libboard_artiq::drtioaux_async::Packet;
-    use libboard_artiq::drtioaux::Error;
-    use log::{warn, error, info};
     use embedded_hal::blocking::delay::DelayMs;
-    use libasync::{task, delay};
+    use libasync::{delay, task};
+    use libboard_artiq::{drtioaux::Error, drtioaux_async, drtioaux_async::Packet};
     use libboard_zynq::time::Milliseconds;
+    use log::{error, info, warn};
 
-    pub fn startup(aux_mutex: &Rc<Mutex<bool>>,
+    use super::*;
+    use crate::{ASYNC_ERROR_BUSY, ASYNC_ERROR_COLLISION, ASYNC_ERROR_SEQUENCE_ERROR, SEEN_ASYNC_ERRORS};
+
+    pub fn startup(
+        aux_mutex: &Rc<Mutex<bool>>,
         routing_table: &Rc<RefCell<drtio_routing::RoutingTable>>,
         up_destinations: &Rc<RefCell<[bool; drtio_routing::DEST_COUNT]>>,
-            timer: GlobalTimer) {
+        timer: GlobalTimer,
+    ) {
         let aux_mutex = aux_mutex.clone();
         let routing_table = routing_table.clone();
         let up_destinations = up_destinations.clone();
@@ -39,9 +38,7 @@ pub mod drtio {
 
     async fn link_rx_up(linkno: u8) -> bool {
         let linkno = linkno as usize;
-        unsafe {
+        unsafe { (csr::DRTIO[linkno].rx_up_read)() == 1 }
-            (csr::DRTIO[linkno].rx_up_read)() == 1
-        }
     }
 
     async fn recv_aux_timeout(linkno: u8, timeout: u64, timer: GlobalTimer) -> Result<Packet, &'static str> {
@@ -55,8 +52,12 @@ pub mod drtio {
         }
     }
 
-    pub async fn aux_transact(aux_mutex: &Mutex<bool>, linkno: u8, request: &Packet,
+    pub async fn aux_transact(
-            timer: GlobalTimer) -> Result<Packet, &'static str> {
+        aux_mutex: &Mutex<bool>,
+        linkno: u8,
+        request: &Packet,
+        timer: GlobalTimer,
+    ) -> Result<Packet, &'static str> {
         if !link_rx_up(linkno).await {
             return Err("link went down");
         }
@@ -79,7 +80,7 @@ pub mod drtio {
         let mut count = 0;
         loop {
             if !link_rx_up(linkno).await {
-                return 0
+                return 0;
             }
             count += 1;
             if count > 100 {
@@ -115,13 +116,23 @@ pub mod drtio {
         }
     }
 
-    async fn load_routing_table(aux_mutex: &Rc<Mutex<bool>>, linkno: u8, routing_table: &drtio_routing::RoutingTable,
+    async fn load_routing_table(
-        timer: GlobalTimer) -> Result<(), &'static str> {
+        aux_mutex: &Rc<Mutex<bool>>,
+        linkno: u8,
+        routing_table: &drtio_routing::RoutingTable,
+        timer: GlobalTimer,
+    ) -> Result<(), &'static str> {
         for i in 0..drtio_routing::DEST_COUNT {
-            let reply = aux_transact(aux_mutex, linkno, &Packet::RoutingSetPath {
+            let reply = aux_transact(
+                aux_mutex,
+                linkno,
+                &Packet::RoutingSetPath {
                     destination: i as u8,
-                hops: routing_table.0[i]
+                    hops: routing_table.0[i],
-            }, timer).await?;
+                },
+                timer,
+            )
+            .await?;
             if reply != Packet::RoutingAck {
                 return Err("unexpected reply");
             }
@@ -129,10 +140,13 @@ pub mod drtio {
         Ok(())
     }
 
-    async fn set_rank(aux_mutex: &Rc<Mutex<bool>>, linkno: u8, rank: u8, timer: GlobalTimer) -> Result<(), &'static str> {
+    async fn set_rank(
-        let reply = aux_transact(aux_mutex, linkno, &Packet::RoutingSetRank {
+        aux_mutex: &Rc<Mutex<bool>>,
-            rank: rank
+        linkno: u8,
-        }, timer).await?;
+        rank: u8,
+        timer: GlobalTimer,
+    ) -> Result<(), &'static str> {
+        let reply = aux_transact(aux_mutex, linkno, &Packet::RoutingSetRank { rank: rank }, timer).await?;
         if reply != Packet::RoutingAck {
             return Err("unexpected reply");
         }
@@ -146,8 +160,11 @@ pub mod drtio {
             (csr::DRTIO[linkno].force_destination_write)(1);
             (csr::DRTIO[linkno].o_get_buffer_space_write)(1);
             while (csr::DRTIO[linkno].o_wait_read)() == 1 {}
-            info!("[DEST#{}] buffer space is {}",
+            info!(
-                destination, (csr::DRTIO[linkno].o_dbg_buffer_space_read)());
+                "[DEST#{}] buffer space is {}",
+                destination,
+                (csr::DRTIO[linkno].o_dbg_buffer_space_read)()
+            );
             (csr::DRTIO[linkno].force_destination_write)(0);
         }
     }
@@ -157,7 +174,7 @@ pub mod drtio {
         match drtioaux_async::recv(linkno).await {
             Ok(Some(packet)) => warn!("[LINK#{}] unsolicited aux packet: {:?}", linkno, packet),
             Ok(None) => (),
-            Err(_) => warn!("[LINK#{}] aux packet error", linkno)
+            Err(_) => warn!("[LINK#{}] aux packet error", linkno),
         }
     }
 
@@ -182,9 +199,12 @@ pub mod drtio {
         }
     }
 
-    async fn destination_set_up(routing_table: &drtio_routing::RoutingTable,
+    async fn destination_set_up(
+        routing_table: &drtio_routing::RoutingTable,
         up_destinations: &Rc<RefCell<[bool; drtio_routing::DEST_COUNT]>>,
-            destination: u8, up: bool) {
+        destination: u8,
+        up: bool,
+    ) {
         let mut up_destinations = up_destinations.borrow_mut();
         up_destinations[destination as usize] = up;
         if up {
@@ -201,10 +221,13 @@ pub mod drtio {
         up_destinations[destination as usize]
     }
 
-    async fn destination_survey(aux_mutex: &Rc<Mutex<bool>>, routing_table: &drtio_routing::RoutingTable,
+    async fn destination_survey(
+        aux_mutex: &Rc<Mutex<bool>>,
+        routing_table: &drtio_routing::RoutingTable,
         up_links: &[bool],
         up_destinations: &Rc<RefCell<[bool; drtio_routing::DEST_COUNT]>>,
-            timer: GlobalTimer) {
+        timer: GlobalTimer,
+    ) {
         for destination in 0..drtio_routing::DEST_COUNT {
             let hop = routing_table.0[destination][0];
             let destination = destination as u8;
@@ -218,44 +241,72 @@ pub mod drtio {
                 let linkno = hop - 1;
                 if destination_up(up_destinations, destination).await {
                     if up_links[linkno as usize] {
-                        let reply = aux_transact(aux_mutex, linkno, &Packet::DestinationStatusRequest {
+                        let reply = aux_transact(
-                            destination: destination
+                            aux_mutex,
-                        }, timer).await;
+                            linkno,
+                            &Packet::DestinationStatusRequest {
+                                destination: destination,
+                            },
+                            timer,
+                        )
+                        .await;
                         match reply {
-                            Ok(Packet::DestinationDownReply) =>
+                            Ok(Packet::DestinationDownReply) => {
-                                destination_set_up(routing_table, up_destinations, destination, false).await,
+                                destination_set_up(routing_table, up_destinations, destination, false).await
+                            }
                             Ok(Packet::DestinationOkReply) => (),
-                            Ok(Packet::DestinationSequenceErrorReply { channel }) =>{
+                            Ok(Packet::DestinationSequenceErrorReply { channel }) => {
-                                error!("[DEST#{}] RTIO sequence error involving channel 0x{:04x}:{}", destination, channel, resolve_channel_name(channel as u32));
+                                error!(
+                                    "[DEST#{}] RTIO sequence error involving channel 0x{:04x}:{}",
+                                    destination,
+                                    channel,
+                                    resolve_channel_name(channel as u32)
+                                );
                                 unsafe { SEEN_ASYNC_ERRORS |= ASYNC_ERROR_SEQUENCE_ERROR };
                             }
-                            Ok(Packet::DestinationCollisionReply { channel }) =>{
+                            Ok(Packet::DestinationCollisionReply { channel }) => {
-                                error!("[DEST#{}] RTIO collision involving channel 0x{:04x}:{}", destination, channel, resolve_channel_name(channel as u32));
+                                error!(
+                                    "[DEST#{}] RTIO collision involving channel 0x{:04x}:{}",
+                                    destination,
+                                    channel,
+                                    resolve_channel_name(channel as u32)
+                                );
                                 unsafe { SEEN_ASYNC_ERRORS |= ASYNC_ERROR_COLLISION };
                             }
-                            Ok(Packet::DestinationBusyReply { channel }) =>{
+                            Ok(Packet::DestinationBusyReply { channel }) => {
-                                error!("[DEST#{}] RTIO busy error involving channel 0x{:04x}:{}", destination, channel, resolve_channel_name(channel as u32));
+                                error!(
+                                    "[DEST#{}] RTIO busy error involving channel 0x{:04x}:{}",
+                                    destination,
+                                    channel,
+                                    resolve_channel_name(channel as u32)
+                                );
                                 unsafe { SEEN_ASYNC_ERRORS |= ASYNC_ERROR_BUSY };
                             }
                             Ok(packet) => error!("[DEST#{}] received unexpected aux packet: {:?}", destination, packet),
-                            Err(e) => error!("[DEST#{}] communication failed ({})", destination, e)
+                            Err(e) => error!("[DEST#{}] communication failed ({})", destination, e),
                         }
                     } else {
                         destination_set_up(routing_table, up_destinations, destination, false).await;
                     }
                 } else {
                     if up_links[linkno as usize] {
-                        let reply = aux_transact(aux_mutex, linkno, &Packet::DestinationStatusRequest {
+                        let reply = aux_transact(
-                            destination: destination
+                            aux_mutex,
-                        }, timer).await;
+                            linkno,
+                            &Packet::DestinationStatusRequest {
+                                destination: destination,
+                            },
+                            timer,
+                        )
+                        .await;
                         match reply {
                             Ok(Packet::DestinationDownReply) => (),
                             Ok(Packet::DestinationOkReply) => {
                                 destination_set_up(routing_table, up_destinations, destination, true).await;
                                 init_buffer_space(destination as u8, linkno).await;
-                            },
+                            }
                             Ok(packet) => error!("[DEST#{}] received unexpected aux packet: {:?}", destination, packet),
-                            Err(e) => error!("[DEST#{}] communication failed ({})", destination, e)
+                            Err(e) => error!("[DEST#{}] communication failed ({})", destination, e),
                         }
                     }
                 }
@@ -263,10 +314,12 @@ pub mod drtio {
         }
     }
 
-    pub async fn link_task(aux_mutex: &Rc<Mutex<bool>>,
+    pub async fn link_task(
+        aux_mutex: &Rc<Mutex<bool>>,
         routing_table: &drtio_routing::RoutingTable,
         up_destinations: &Rc<RefCell<[bool; drtio_routing::DEST_COUNT]>>,
-            timer: GlobalTimer) {
+        timer: GlobalTimer,
+    ) {
         let mut up_links = [false; csr::DRTIO.len()];
         loop {
             for linkno in 0..csr::DRTIO.len() {
@@ -327,12 +380,11 @@ pub mod drtio {
         for linkno in 0..csr::DRTIO.len() {
             let linkno = linkno as u8;
             if task::block_on(link_rx_up(linkno)) {
-                let reply = task::block_on(aux_transact(&aux_mutex, linkno,
+                let reply = task::block_on(aux_transact(&aux_mutex, linkno, &Packet::ResetRequest, timer));
-                    &Packet::ResetRequest, timer));
                 match reply {
                     Ok(Packet::ResetAck) => (),
                     Ok(_) => error!("[LINK#{}] reset failed, received unexpected aux packet", linkno),
-                    Err(e) => error!("[LINK#{}] reset failed, aux packet error ({})", linkno, e)
+                    Err(e) => error!("[LINK#{}] reset failed, aux packet error ({})", linkno, e),
                 }
             }
         }
@@ -341,19 +393,24 @@ pub mod drtio {
 
 fn read_device_map(cfg: &Config) -> BTreeMap<u32, String> {
     let mut device_map: BTreeMap<u32, String> = BTreeMap::new();
-    let _ = cfg.read("device_map").and_then(|raw_bytes| {
+    let _ = cfg
+        .read("device_map")
+        .and_then(|raw_bytes| {
             let mut bytes_cr = Cursor::new(raw_bytes);
             let size = bytes_cr.read_u32().unwrap();
             for _ in 0..size {
                 let channel = bytes_cr.read_u32().unwrap();
                 let device_name = bytes_cr.read_string().unwrap();
                 if let Some(old_entry) = device_map.insert(channel, device_name.clone()) {
-                error!("read_device_map: conflicting entries for channel {}: `{}` and `{}`",
+                    error!(
-                       channel, old_entry, device_name);
+                        "read_device_map: conflicting entries for channel {}: `{}` and `{}`",
+                        channel, old_entry, device_name
+                    );
                 }
             }
             Ok(())
-    } ).or_else(|err| {
+        })
+        .or_else(|err| {
             error!("read_device_map: error reading `device_map` from config: {}", err);
             Err(err)
         });
@@ -363,31 +420,40 @@ fn read_device_map(cfg: &Config) -> BTreeMap<u32, String> {
 fn _resolve_channel_name(channel: u32, device_map: &BTreeMap<u32, String>) -> String {
     match device_map.get(&channel) {
         Some(val) => val.clone(),
-        None => String::from("unknown")
+        None => String::from("unknown"),
     }
 }
 
 pub fn resolve_channel_name(channel: u32) -> String {
-    _resolve_channel_name(channel, unsafe{&RTIO_DEVICE_MAP})
+    _resolve_channel_name(channel, unsafe { &RTIO_DEVICE_MAP })
 }
 
 #[cfg(not(has_drtio))]
 pub mod drtio {
     use super::*;
 
-    pub fn startup(_aux_mutex: &Rc<Mutex<bool>>, _routing_table: &Rc<RefCell<drtio_routing::RoutingTable>>,
+    pub fn startup(
-        _up_destinations: &Rc<RefCell<[bool; drtio_routing::DEST_COUNT]>>, _timer: GlobalTimer) {}
+        _aux_mutex: &Rc<Mutex<bool>>,
+        _routing_table: &Rc<RefCell<drtio_routing::RoutingTable>>,
+        _up_destinations: &Rc<RefCell<[bool; drtio_routing::DEST_COUNT]>>,
+        _timer: GlobalTimer,
+    ) {
+    }
 
     #[allow(dead_code)]
     pub fn reset(_aux_mutex: Rc<Mutex<bool>>, mut _timer: GlobalTimer) {}
 }
 
-pub fn startup(aux_mutex: &Rc<Mutex<bool>>,
+pub fn startup(
+    aux_mutex: &Rc<Mutex<bool>>,
     routing_table: &Rc<RefCell<drtio_routing::RoutingTable>>,
     up_destinations: &Rc<RefCell<[bool; drtio_routing::DEST_COUNT]>>,
     timer: GlobalTimer,
-        cfg: &Config) {
+    cfg: &Config,
-    unsafe { RTIO_DEVICE_MAP = read_device_map(cfg); }
+) {
+    unsafe {
+        RTIO_DEVICE_MAP = read_device_map(cfg);
+    }
     drtio::startup(aux_mutex, routing_table, up_destinations, timer);
     unsafe {
         csr::rtio_core::reset_phy_write(1);

src/rustfmt.toml

@@ -0,0 +1,68 @@
+max_width = 120
+hard_tabs = false
+tab_spaces = 4
+newline_style = "Auto"
+use_small_heuristics = "Default"
+indent_style = "Block"
+wrap_comments = false
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+format_macro_matchers = true
+format_macro_bodies = true
+empty_item_single_line = true
+struct_lit_single_line = true
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+where_single_line = true
+imports_indent = "Visual"
+imports_layout = "Mixed"
+merge_imports = true
+group_imports = "StdExternalCrate"
+reorder_imports = true
+reorder_modules = true
+reorder_impl_items = false
+type_punctuation_density = "Wide"
+space_before_colon = false
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+spaces_around_ranges = false
+binop_separator = "Front"
+remove_nested_parens = true
+combine_control_expr = true
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+match_arm_blocks = true
+match_arm_leading_pipes = "Never"
+force_multiline_blocks = false
+fn_args_layout = "Tall"
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+match_block_trailing_comma = false
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+blank_lines_lower_bound = 0
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+version = "Two"
+inline_attribute_width = 0
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+use_field_init_shorthand = false
+force_explicit_abi = true
+condense_wildcard_suffixes = false
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+unstable_features = false
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+error_on_unformatted = false
+report_todo = "Never"
+report_fixme = "Never"
+ignore = []
+emit_mode = "Files"
+make_backup = false

src/satman/src/main.rs

@@ -8,30 +8,34 @@ extern crate log;
 
 extern crate embedded_hal;
 
-extern crate libboard_zynq;
 extern crate libboard_artiq;
-extern crate libsupport_zynq;
+extern crate libboard_zynq;
 extern crate libcortex_a9;
 extern crate libregister;
+extern crate libsupport_zynq;
 
 extern crate unwind;
 
 extern crate alloc;
 
-use libboard_zynq::{i2c::I2c, timer::GlobalTimer, time::Milliseconds, print, println, mpcore, gic, stdio};
+use core::sync::atomic::{AtomicBool, Ordering};
-use libsupport_zynq::ram;
-#[cfg(has_si5324)]
-use libboard_artiq::si5324;
-#[cfg(feature = "target_kasli_soc")]
-use libboard_artiq::io_expander;
-use libboard_artiq::{pl::csr, drtio_routing, drtioaux, logger, identifier_read};
-use libcortex_a9::{spin_lock_yield, interrupt_handler, regs::{MPIDR, SP}, notify_spin_lock, asm, l2c::enable_l2_cache};
-use libregister::{RegisterW, RegisterR};
-#[cfg(feature = "target_kasli_soc")]
-use libboard_zynq::error_led::ErrorLED;
 
 use embedded_hal::blocking::delay::DelayUs;
-use core::sync::atomic::{AtomicBool, Ordering};
+#[cfg(feature = "target_kasli_soc")]
+use libboard_artiq::io_expander;
+#[cfg(has_si5324)]
+use libboard_artiq::si5324;
+use libboard_artiq::{drtio_routing, drtioaux, identifier_read, logger, pl::csr};
+#[cfg(feature = "target_kasli_soc")]
+use libboard_zynq::error_led::ErrorLED;
+use libboard_zynq::{gic, i2c::I2c, mpcore, print, println, stdio, time::Milliseconds, timer::GlobalTimer};
+use libcortex_a9::{asm, interrupt_handler,
+                   l2c::enable_l2_cache,
+                   notify_spin_lock,
+                   regs::{MPIDR, SP},
+                   spin_lock_yield};
+use libregister::{RegisterR, RegisterW};
+use libsupport_zynq::ram;
 
 mod repeater;
 
@@ -48,9 +52,7 @@ fn drtiosat_reset_phy(reset: bool) {
 }
 
 fn drtiosat_link_rx_up() -> bool {
-    unsafe {
+    unsafe { csr::drtiosat::rx_up_read() == 1 }
-        csr::drtiosat::rx_up_read() == 1
-    }
 }
 
 fn drtiosat_tsc_loaded() -> bool {
@@ -63,7 +65,6 @@ fn drtiosat_tsc_loaded() -> bool {
     }
 }
 
-
 #[cfg(has_drtio_routing)]
 macro_rules! forward {
     ($routing_table:expr, $destination:expr, $rank:expr, $repeaters:expr, $packet:expr, $timer:expr) => {{
@@ -76,22 +77,26 @@ macro_rules! forward {
                 return Err(drtioaux::Error::RoutingError);
             }
         }
-    }}
+    }};
 }
 
 #[cfg(not(has_drtio_routing))]
 macro_rules! forward {
-    ($routing_table:expr, $destination:expr, $rank:expr, $repeaters:expr, $packet:expr, $timer:expr) => {}
+    ($routing_table:expr, $destination:expr, $rank:expr, $repeaters:expr, $packet:expr, $timer:expr) => {};
 }
 
-fn process_aux_packet(_repeaters: &mut [repeater::Repeater],
+fn process_aux_packet(
-        _routing_table: &mut drtio_routing::RoutingTable, _rank: &mut u8,
+    _repeaters: &mut [repeater::Repeater],
-        packet: drtioaux::Packet, timer: &mut GlobalTimer, i2c: &mut I2c) -> Result<(), drtioaux::Error> {
+    _routing_table: &mut drtio_routing::RoutingTable,
+    _rank: &mut u8,
+    packet: drtioaux::Packet,
+    timer: &mut GlobalTimer,
+    i2c: &mut I2c,
+) -> Result<(), drtioaux::Error> {
     // In the code below, *_chan_sel_write takes an u8 if there are fewer than 256 channels,
     // and u16 otherwise; hence the `as _` conversion.
     match packet {
-        drtioaux::Packet::EchoRequest =>
+        drtioaux::Packet::EchoRequest => drtioaux::send(0, &drtioaux::Packet::EchoReply),
-            drtioaux::send(0, &drtioaux::Packet::EchoReply),
         drtioaux::Packet::ResetRequest => {
             info!("resetting RTIO");
             drtiosat_reset(true);
@@ -103,9 +108,11 @@ fn process_aux_packet(_repeaters: &mut [repeater::Repeater],
                 }
             }
             drtioaux::send(0, &drtioaux::Packet::ResetAck)
-        },
+        }
 
-        drtioaux::Packet::DestinationStatusRequest { destination: _destination } => {
+        drtioaux::Packet::DestinationStatusRequest {
+            destination: _destination,
+        } => {
             #[cfg(has_drtio_routing)]
             let hop = _routing_table.0[_destination as usize][*_rank as usize];
             #[cfg(not(has_drtio_routing))]
@@ -122,26 +129,22 @@ fn process_aux_packet(_repeaters: &mut [repeater::Repeater],
                         channel = csr::drtiosat::sequence_error_channel_read();
                         csr::drtiosat::rtio_error_write(1);
                     }
-                    drtioaux::send(0,
+                    drtioaux::send(0, &drtioaux::Packet::DestinationSequenceErrorReply { channel })?;
-                        &drtioaux::Packet::DestinationSequenceErrorReply { channel })?;
                 } else if errors & 2 != 0 {
                     let channel;
                     unsafe {
                         channel = csr::drtiosat::collision_channel_read();
                         csr::drtiosat::rtio_error_write(2);
                     }
-                    drtioaux::send(0,
+                    drtioaux::send(0, &drtioaux::Packet::DestinationCollisionReply { channel })?;
-                        &drtioaux::Packet::DestinationCollisionReply { channel })?;
                 } else if errors & 4 != 0 {
                     let channel;
                     unsafe {
                         channel = csr::drtiosat::busy_channel_read();
                         csr::drtiosat::rtio_error_write(4);
                     }
-                    drtioaux::send(0,
+                    drtioaux::send(0, &drtioaux::Packet::DestinationBusyReply { channel })?;
-                        &drtioaux::Packet::DestinationBusyReply { channel })?;
+                } else {
-                }
-                else {
                     drtioaux::send(0, &drtioaux::Packet::DestinationOkReply)?;
                 }
             }
@@ -152,15 +155,20 @@ fn process_aux_packet(_repeaters: &mut [repeater::Repeater],
                     let hop = hop as usize;
                     if hop <= csr::DRTIOREP.len() {
                         let repno = hop - 1;
-                        match _repeaters[repno].aux_forward(&drtioaux::Packet::DestinationStatusRequest {
+                        match _repeaters[repno].aux_forward(
-                            destination: _destination
+                            &drtioaux::Packet::DestinationStatusRequest {
-                        }, timer) {
+                                destination: _destination,
+                            },
+                            timer,
+                        ) {
                             Ok(()) => (),
-                            Err(drtioaux::Error::LinkDown) => drtioaux::send(0, &drtioaux::Packet::DestinationDownReply)?,
+                            Err(drtioaux::Error::LinkDown) => {
+                                drtioaux::send(0, &drtioaux::Packet::DestinationDownReply)?
+                            }
                             Err(e) => {
                                 drtioaux::send(0, &drtioaux::Packet::DestinationDownReply)?;
                                 error!("aux error when handling destination status request: {:?}", e);
-                            },
+                            }
                         }
                     } else {
                         drtioaux::send(0, &drtioaux::Packet::DestinationDownReply)?;
@@ -200,15 +208,18 @@ fn process_aux_packet(_repeaters: &mut [repeater::Repeater],
         }
 
         #[cfg(not(has_drtio_routing))]
-        drtioaux::Packet::RoutingSetPath { destination: _, hops: _ } => {
+        drtioaux::Packet::RoutingSetPath {
-            drtioaux::send(0, &drtioaux::Packet::RoutingAck)
+            destination: _,
-        }
+            hops: _,
+        } => drtioaux::send(0, &drtioaux::Packet::RoutingAck),
         #[cfg(not(has_drtio_routing))]
-        drtioaux::Packet::RoutingSetRank { rank: _ } => {
+        drtioaux::Packet::RoutingSetRank { rank: _ } => drtioaux::send(0, &drtioaux::Packet::RoutingAck),
-            drtioaux::send(0, &drtioaux::Packet::RoutingAck)
-        }
 
-        drtioaux::Packet::MonitorRequest { destination: _destination, channel: _channel, probe: _probe } => {
+        drtioaux::Packet::MonitorRequest {
+            destination: _destination,
+            channel: _channel,
+            probe: _probe,
+        } => {
             forward!(_routing_table, _destination, *_rank, _repeaters, &packet, timer);
             let value;
             #[cfg(has_rtio_moninj)]
@@ -224,9 +235,13 @@ fn process_aux_packet(_repeaters: &mut [repeater::Repeater],
             }
             let reply = drtioaux::Packet::MonitorReply { value: value };
             drtioaux::send(0, &reply)
-        },
+        }
-        drtioaux::Packet::InjectionRequest { destination: _destination, channel: _channel, 
+        drtioaux::Packet::InjectionRequest {
-                                             overrd: _overrd, value: _value } => {
+            destination: _destination,
+            channel: _channel,
+            overrd: _overrd,
+            value: _value,
+        } => {
             forward!(_routing_table, _destination, *_rank, _repeaters, &packet, timer);
             #[cfg(has_rtio_moninj)]
             unsafe {
@@ -235,9 +250,12 @@ fn process_aux_packet(_repeaters: &mut [repeater::Repeater],
                 csr::rtio_moninj::inj_value_write(value);
             }
             Ok(())
-        },
+        }
-        drtioaux::Packet::InjectionStatusRequest { destination: _destination, 
+        drtioaux::Packet::InjectionStatusRequest {
-                                                   channel: _channel, overrd: _overrd } => {
+            destination: _destination,
+            channel: _channel,
+            overrd: _overrd,
+        } => {
             forward!(_routing_table, _destination, *_rank, _repeaters, &packet, timer);
             let value;
             #[cfg(has_rtio_moninj)]
@@ -251,44 +269,87 @@ fn process_aux_packet(_repeaters: &mut [repeater::Repeater],
                 value = 0;
             }
             drtioaux::send(0, &drtioaux::Packet::InjectionStatusReply { value: value })
-        },
+        }
 
-        drtioaux::Packet::I2cStartRequest { destination: _destination, busno: _busno } => {
+        drtioaux::Packet::I2cStartRequest {
+            destination: _destination,
+            busno: _busno,
+        } => {
             forward!(_routing_table, _destination, *_rank, _repeaters, &packet, timer);
             let succeeded = i2c.start().is_ok();
             drtioaux::send(0, &drtioaux::Packet::I2cBasicReply { succeeded: succeeded })
         }
-        drtioaux::Packet::I2cRestartRequest { destination: _destination, busno: _busno } => {
+        drtioaux::Packet::I2cRestartRequest {
+            destination: _destination,
+            busno: _busno,
+        } => {
             forward!(_routing_table, _destination, *_rank, _repeaters, &packet, timer);
             let succeeded = i2c.restart().is_ok();
             drtioaux::send(0, &drtioaux::Packet::I2cBasicReply { succeeded: succeeded })
         }
-        drtioaux::Packet::I2cStopRequest { destination: _destination, busno: _busno } => {
+        drtioaux::Packet::I2cStopRequest {
+            destination: _destination,
+            busno: _busno,
+        } => {
             forward!(_routing_table, _destination, *_rank, _repeaters, &packet, timer);
             let succeeded = i2c.stop().is_ok();
             drtioaux::send(0, &drtioaux::Packet::I2cBasicReply { succeeded: succeeded })
         }
-        drtioaux::Packet::I2cWriteRequest { destination: _destination, busno: _busno, data } => {
+        drtioaux::Packet::I2cWriteRequest {
+            destination: _destination,
+            busno: _busno,
+            data,
+        } => {
             forward!(_routing_table, _destination, *_rank, _repeaters, &packet, timer);
             match i2c.write(data) {
-                Ok(ack) => drtioaux::send(0,
+                Ok(ack) => drtioaux::send(
-                    &drtioaux::Packet::I2cWriteReply { succeeded: true, ack: ack }),
+                    0,
-                Err(_) => drtioaux::send(0,
+                    &drtioaux::Packet::I2cWriteReply {
-                    &drtioaux::Packet::I2cWriteReply { succeeded: false, ack: false })
+                        succeeded: true,
+                        ack: ack,
+                    },
+                ),
+                Err(_) => drtioaux::send(
+                    0,
+                    &drtioaux::Packet::I2cWriteReply {
+                        succeeded: false,
+                        ack: false,
+                    },
+                ),
             }
         }
-        drtioaux::Packet::I2cReadRequest { destination: _destination, busno: _busno, ack } => {
+        drtioaux::Packet::I2cReadRequest {
+            destination: _destination,
+            busno: _busno,
+            ack,
+        } => {
             forward!(_routing_table, _destination, *_rank, _repeaters, &packet, timer);
             match i2c.read(ack) {
-                Ok(data) => drtioaux::send(0,
+                Ok(data) => drtioaux::send(
-                    &drtioaux::Packet::I2cReadReply { succeeded: true, data: data }),
+                    0,
-                Err(_) => drtioaux::send(0,
+                    &drtioaux::Packet::I2cReadReply {
-                    &drtioaux::Packet::I2cReadReply { succeeded: false, data: 0xff })
+                        succeeded: true,
+                        data: data,
+                    },
+                ),
+                Err(_) => drtioaux::send(
+                    0,
+                    &drtioaux::Packet::I2cReadReply {
+                        succeeded: false,
+                        data: 0xff,
+                    },
+                ),
             }
         }
-        drtioaux::Packet::I2cSwitchSelectRequest { destination: _destination, busno: _busno, address, mask } => {
+        drtioaux::Packet::I2cSwitchSelectRequest {
+            destination: _destination,
+            busno: _busno,
+            address,
+            mask,
+        } => {
             forward!(_routing_table, _destination, *_rank, _repeaters, &packet, timer);
-            let ch = match mask { //decode from mainline, PCA9548-centric API
+            let ch = match mask {
+                //decode from mainline, PCA9548-centric API
                 0x00 => None,
                 0x01 => Some(0),
                 0x02 => Some(1),
@@ -298,28 +359,39 @@ fn process_aux_packet(_repeaters: &mut [repeater::Repeater],
                 0x20 => Some(5),
                 0x40 => Some(6),
                 0x80 => Some(7),
-                _ => { return drtioaux::send(0, &drtioaux::Packet::I2cBasicReply { succeeded: false }); }
+                _ => return drtioaux::send(0, &drtioaux::Packet::I2cBasicReply { succeeded: false }),
             };
             let succeeded = i2c.pca954x_select(address, ch).is_ok();
             drtioaux::send(0, &drtioaux::Packet::I2cBasicReply { succeeded: succeeded })
         }
 
-        drtioaux::Packet::SpiSetConfigRequest { destination: _destination, busno: _busno, 
+        drtioaux::Packet::SpiSetConfigRequest {
-                                                flags: _flags, length: _length, div: _div, cs: _cs } => {
+            destination: _destination,
+            busno: _busno,
+            flags: _flags,
+            length: _length,
+            div: _div,
+            cs: _cs,
+        } => {
             forward!(_routing_table, _destination, *_rank, _repeaters, &packet, timer);
             // todo: reimplement when/if SPI is available
             //let succeeded = spi::set_config(busno, flags, length, div, cs).is_ok();
-            drtioaux::send(0,
+            drtioaux::send(0, &drtioaux::Packet::SpiBasicReply { succeeded: false })
-                &drtioaux::Packet::SpiBasicReply { succeeded: false })
+        }
-        },
+        drtioaux::Packet::SpiWriteRequest {
-        drtioaux::Packet::SpiWriteRequest { destination: _destination, busno: _busno, data: _data } => {
+            destination: _destination,
+            busno: _busno,
+            data: _data,
+        } => {
             forward!(_routing_table, _destination, *_rank, _repeaters, &packet, timer);
             // todo: reimplement when/if SPI is available
             //let succeeded = spi::write(busno, data).is_ok();
-            drtioaux::send(0,
+            drtioaux::send(0, &drtioaux::Packet::SpiBasicReply { succeeded: false })
-                &drtioaux::Packet::SpiBasicReply { succeeded: false })
         }
-        drtioaux::Packet::SpiReadRequest { destination: _destination, busno: _busno } => {
+        drtioaux::Packet::SpiReadRequest {
+            destination: _destination,
+            busno: _busno,
+        } => {
             forward!(_routing_table, _destination, *_rank, _repeaters, &packet, timer);
             // todo: reimplement when/if SPI is available
             // match spi::read(busno) {
@@ -328,8 +400,13 @@ fn process_aux_packet(_repeaters: &mut [repeater::Repeater],
             //     Err(_) => drtioaux::send(0,
             //         &drtioaux::Packet::SpiReadReply { succeeded: false, data: 0 })
             // }
-            drtioaux::send(0,
+            drtioaux::send(
-                &drtioaux::Packet::SpiReadReply { succeeded: false, data: 0 })
+                0,
+                &drtioaux::Packet::SpiReadReply {
+                    succeeded: false,
+                    data: 0,
+                },
+            )
         }
 
         _ => {
@@ -339,11 +416,14 @@ fn process_aux_packet(_repeaters: &mut [repeater::Repeater],
     }
 }
 
-fn process_aux_packets(repeaters: &mut [repeater::Repeater],
+fn process_aux_packets(
-        routing_table: &mut drtio_routing::RoutingTable, rank: &mut u8, 
+    repeaters: &mut [repeater::Repeater],
-        timer: &mut GlobalTimer, i2c: &mut I2c) {
+    routing_table: &mut drtio_routing::RoutingTable,
-    let result =
+    rank: &mut u8,
-        drtioaux::recv(0).and_then(|packet| {
+    timer: &mut GlobalTimer,
+    i2c: &mut I2c,
+) {
+    let result = drtioaux::recv(0).and_then(|packet| {
         if let Some(packet) = packet {
             process_aux_packet(repeaters, routing_table, rank, packet, timer, i2c)
         } else {
@@ -352,7 +432,7 @@ fn process_aux_packets(repeaters: &mut [repeater::Repeater],
     });
     match result {
         Ok(()) => (),
-        Err(e) => warn!("aux packet error ({:?})", e)
+        Err(e) => warn!("aux packet error ({:?})", e),
     }
 }
 
@@ -372,7 +452,10 @@ fn drtiosat_process_errors() {
         unsafe {
             destination = csr::drtiosat::buffer_space_timeout_dest_read();
         }
-        error!("timeout attempting to get buffer space from CRI, destination=0x{:02x}", destination)
+        error!(
+            "timeout attempting to get buffer space from CRI, destination=0x{:02x}",
+            destination
+        )
     }
     if errors & 8 != 0 {
         let channel;
@@ -383,8 +466,13 @@ fn drtiosat_process_errors() {
             timestamp_event = csr::drtiosat::underflow_timestamp_event_read() as i64;
             timestamp_counter = csr::drtiosat::underflow_timestamp_counter_read() as i64;
         }
-        error!("write underflow, channel={}, timestamp={}, counter={}, slack={}",
+        error!(
-               channel, timestamp_event, timestamp_counter, timestamp_event-timestamp_counter);
+            "write underflow, channel={}, timestamp={}, counter={}, slack={}",
+            channel,
+            timestamp_event,
+            timestamp_counter,
+            timestamp_event - timestamp_counter
+        );
     }
     if errors & 16 != 0 {
         error!("write overflow");
@@ -404,42 +492,38 @@ fn hardware_tick(ts: &mut u64, timer: &mut GlobalTimer) {
 }
 
 #[cfg(all(has_si5324, rtio_frequency = "125.0"))]
-const SI5324_SETTINGS: si5324::FrequencySettings
+const SI5324_SETTINGS: si5324::FrequencySettings = si5324::FrequencySettings {
-    = si5324::FrequencySettings {
+    n1_hs: 5,
-    n1_hs  : 5,
+    nc1_ls: 8,
-    nc1_ls : 8,
+    n2_hs: 7,
-    n2_hs  : 7,
+    n2_ls: 360,
-    n2_ls  : 360,
+    n31: 63,
-    n31    : 63,
+    n32: 63,
-    n32    : 63,
+    bwsel: 4,
-    bwsel  : 4,
+    crystal_as_ckin2: true,
-    crystal_as_ckin2: true
 };
 
 #[cfg(all(has_si5324, rtio_frequency = "100.0"))]
-const SI5324_SETTINGS: si5324::FrequencySettings
+const SI5324_SETTINGS: si5324::FrequencySettings = si5324::FrequencySettings {
-    = si5324::FrequencySettings {
+    n1_hs: 5,
-    n1_hs  : 5,
+    nc1_ls: 10,
-    nc1_ls : 10,
+    n2_hs: 10,
-    n2_hs  : 10,
+    n2_ls: 250,
-    n2_ls  : 250,
+    n31: 50,
-    n31    : 50,
+    n32: 50,
-    n32    : 50,
+    bwsel: 4,
-    bwsel  : 4,
+    crystal_as_ckin2: true,
-    crystal_as_ckin2: true
 };
 
-static mut LOG_BUFFER: [u8; 1<<17] = [0; 1<<17];
+static mut LOG_BUFFER: [u8; 1 << 17] = [0; 1 << 17];
 
 #[no_mangle]
-pub extern fn main_core0() -> i32 {
+pub extern "C" fn main_core0() -> i32 {
     enable_l2_cache(0x8);
 
     let mut timer = GlobalTimer::start();
 
-    let buffer_logger = unsafe {
+    let buffer_logger = unsafe { logger::BufferLogger::new(&mut LOG_BUFFER[..]) };
-        logger::BufferLogger::new(&mut LOG_BUFFER[..])
-    };
     buffer_logger.set_uart_log_level(log::LevelFilter::Info);
     buffer_logger.register();
     log::set_max_level(log::LevelFilter::Info);
@@ -553,7 +637,7 @@ extern "C" {
 }
 
 interrupt_handler!(IRQ, irq, __irq_stack0_start, __irq_stack1_start, {
-    if MPIDR.read().cpu_id() == 1{
+    if MPIDR.read().cpu_id() == 1 {
         let mpcore = mpcore::RegisterBlock::mpcore();
         let mut gic = gic::InterruptController::gic(mpcore);
         let id = gic.get_interrupt_id();
@@ -593,18 +677,21 @@ pub fn main_core1() {
 }
 
 #[no_mangle]
-pub extern fn exception(_vect: u32, _regs: *const u32, pc: u32, ea: u32) {
+pub extern "C" fn exception(_vect: u32, _regs: *const u32, pc: u32, ea: u32) {
-
     fn hexdump(addr: u32) {
         let addr = (addr - addr % 4) as *const u32;
         let mut ptr = addr;
         println!("@ {:08p}", ptr);
         for _ in 0..4 {
             print!("+{:04x}: ", ptr as usize - addr as usize);
-            print!("{:08x} ",   unsafe { *ptr }); ptr = ptr.wrapping_offset(1);
+            print!("{:08x} ", unsafe { *ptr });
-            print!("{:08x} ",   unsafe { *ptr }); ptr = ptr.wrapping_offset(1);
+            ptr = ptr.wrapping_offset(1);
-            print!("{:08x} ",   unsafe { *ptr }); ptr = ptr.wrapping_offset(1);
+            print!("{:08x} ", unsafe { *ptr });
-            print!("{:08x}\n",  unsafe { *ptr }); ptr = ptr.wrapping_offset(1);
+            ptr = ptr.wrapping_offset(1);
+            print!("{:08x} ", unsafe { *ptr });
+            ptr = ptr.wrapping_offset(1);
+            print!("{:08x}\n", unsafe { *ptr });
+            ptr = ptr.wrapping_offset(1);
         }
     }
 
@@ -654,7 +741,7 @@ extern "C" {
 }
 
 #[no_mangle]
-extern fn dl_unwind_find_exidx(_pc: *const u32, len_ptr: *mut u32) -> *const u32 {
+extern "C" fn dl_unwind_find_exidx(_pc: *const u32, len_ptr: *mut u32) -> *const u32 {
     let length;
     let start: *const u32;
     unsafe {

src/satman/src/repeater.rs

@@ -1,19 +1,16 @@
-use libboard_artiq::{drtioaux, drtio_routing};
-use libboard_zynq::timer::GlobalTimer;
-
-#[cfg(has_drtio_routing)]
-use libboard_artiq::{pl::csr};
-#[cfg(has_drtio_routing)]
-use libboard_zynq::time::Milliseconds;
 #[cfg(has_drtio_routing)]
 use embedded_hal::prelude::_embedded_hal_blocking_delay_DelayUs;
+#[cfg(has_drtio_routing)]
+use libboard_artiq::pl::csr;
+use libboard_artiq::{drtio_routing, drtioaux};
+#[cfg(has_drtio_routing)]
+use libboard_zynq::time::Milliseconds;
+use libboard_zynq::timer::GlobalTimer;
 
 #[cfg(has_drtio_routing)]
 fn rep_link_rx_up(repno: u8) -> bool {
     let repno = repno as usize;
-    unsafe {
+    unsafe { (csr::DRTIOREP[repno].rx_up_read)() == 1 }
-        (csr::DRTIOREP[repno].rx_up_read)() == 1
-    }
 }
 
 #[cfg(has_drtio_routing)]
@@ -23,12 +20,14 @@ enum RepeaterState {
     SendPing { ping_count: u16 },
     WaitPingReply { ping_count: u16, timeout: Milliseconds },
     Up,
-    Failed
+    Failed,
 }
 
 #[cfg(has_drtio_routing)]
 impl Default for RepeaterState {
-    fn default() -> RepeaterState { RepeaterState::Down }
+    fn default() -> RepeaterState {
+        RepeaterState::Down
+    }
 }
 
 #[cfg(has_drtio_routing)]
@@ -36,7 +35,7 @@ impl Default for RepeaterState {
 pub struct Repeater {
     repno: u8,
     auxno: u8,
-    state: RepeaterState
+    state: RepeaterState,
 }
 
 #[cfg(has_drtio_routing)]
@@ -45,7 +44,7 @@ impl Repeater {
         Repeater {
             repno: repno,
             auxno: repno + 1,
-            state: RepeaterState::Down
+            state: RepeaterState::Down,
         }
     }
 
@@ -54,8 +53,7 @@ impl Repeater {
         self.state == RepeaterState::Up
     }
 
-    pub fn service(&mut self, routing_table: &drtio_routing::RoutingTable, rank: u8,
+    pub fn service(&mut self, routing_table: &drtio_routing::RoutingTable, rank: u8, timer: &mut GlobalTimer) {
-        timer: &mut GlobalTimer) {
         self.process_local_errors();
 
         match self.state {
@@ -70,7 +68,7 @@ impl Repeater {
                     drtioaux::send(self.auxno, &drtioaux::Packet::EchoRequest).unwrap();
                     self.state = RepeaterState::WaitPingReply {
                         ping_count: ping_count + 1,
-                        timeout: timer.get_time() + Milliseconds(100)
+                        timeout: timer.get_time() + Milliseconds(100),
                     }
                 } else {
                     error!("[REP#{}] link RX went down during ping", self.repno);
@@ -132,7 +130,7 @@ impl Repeater {
         match drtioaux::recv(self.auxno) {
             Ok(Some(packet)) => warn!("[REP#{}] unsolicited aux packet: {:?}", self.repno, packet),
             Ok(None) => (),
-            Err(_) => warn!("[REP#{}] aux packet error", self.repno)
+            Err(_) => warn!("[REP#{}] aux packet error", self.repno),
         }
     }
 
@@ -155,14 +153,20 @@ impl Repeater {
                 cmd = (csr::DRTIOREP[repno].command_missed_cmd_read)();
                 chan_sel = (csr::DRTIOREP[repno].command_missed_chan_sel_read)();
             }
-            error!("[REP#{}] CRI command missed, cmd={}, chan_sel=0x{:06x}", repno, cmd, chan_sel)
+            error!(
+                "[REP#{}] CRI command missed, cmd={}, chan_sel=0x{:06x}",
+                repno, cmd, chan_sel
+            )
         }
         if errors & 8 != 0 {
             let destination;
             unsafe {
                 destination = (csr::DRTIOREP[repno].buffer_space_timeout_dest_read)();
             }
-            error!("[REP#{}] timeout attempting to get remote buffer space, destination=0x{:02x}", repno, destination);
+            error!(
+                "[REP#{}] timeout attempting to get remote buffer space, destination=0x{:02x}",
+                repno, destination
+            );
         }
         unsafe {
             (csr::DRTIOREP[repno].protocol_error_write)(errors);
@@ -181,7 +185,7 @@ impl Repeater {
             match drtioaux::recv(self.auxno) {
                 Ok(Some(packet)) => return Ok(packet),
                 Ok(None) => (),
-                Err(e) => return Err(e)
+                Err(e) => return Err(e),
             }
         }
     }
@@ -217,15 +221,24 @@ impl Repeater {
         }
     }
 
-    pub fn set_path(&self, destination: u8, hops: &[u8; drtio_routing::MAX_HOPS], timer: &mut GlobalTimer) -> Result<(), drtioaux::Error> {
+    pub fn set_path(
+        &self,
+        destination: u8,
+        hops: &[u8; drtio_routing::MAX_HOPS],
+        timer: &mut GlobalTimer,
+    ) -> Result<(), drtioaux::Error> {
         if self.state != RepeaterState::Up {
             return Ok(());
         }
 
-        drtioaux::send(self.auxno, &drtioaux::Packet::RoutingSetPath {
+        drtioaux::send(
+            self.auxno,
+            &drtioaux::Packet::RoutingSetPath {
                 destination: destination,
-            hops: *hops
+                hops: *hops,
-        }).unwrap();
+            },
+        )
+        .unwrap();
         let reply = self.recv_aux_timeout(200, timer)?;
         if reply != drtioaux::Packet::RoutingAck {
             return Err(drtioaux::Error::UnexpectedReply);
@@ -233,7 +246,11 @@ impl Repeater {
         Ok(())
     }
 
-    pub fn load_routing_table(&self, routing_table: &drtio_routing::RoutingTable, timer: &mut GlobalTimer) -> Result<(), drtioaux::Error> {
+    pub fn load_routing_table(
+        &self,
+        routing_table: &drtio_routing::RoutingTable,
+        timer: &mut GlobalTimer,
+    ) -> Result<(), drtioaux::Error> {
         for i in 0..drtio_routing::DEST_COUNT {
             self.set_path(i as u8, &routing_table.0[i], timer)?;
         }
@@ -244,9 +261,7 @@ impl Repeater {
         if self.state != RepeaterState::Up {
             return Ok(());
         }
-        drtioaux::send(self.auxno, &drtioaux::Packet::RoutingSetRank {
+        drtioaux::send(self.auxno, &drtioaux::Packet::RoutingSetRank { rank: rank }).unwrap();
-            rank: rank
-        }).unwrap();
         let reply = self.recv_aux_timeout(200, timer)?;
         if reply != drtioaux::Packet::RoutingAck {
             return Err(drtioaux::Error::UnexpectedReply);
@@ -256,9 +271,13 @@ impl Repeater {
 
     pub fn rtio_reset(&self, timer: &mut GlobalTimer) -> Result<(), drtioaux::Error> {
         let repno = self.repno as usize;
-        unsafe { (csr::DRTIOREP[repno].reset_write)(1); }
+        unsafe {
+            (csr::DRTIOREP[repno].reset_write)(1);
+        }
         timer.delay_us(100);
-        unsafe { (csr::DRTIOREP[repno].reset_write)(0); }
+        unsafe {
+            (csr::DRTIOREP[repno].reset_write)(0);
+        }
 
         if self.state != RepeaterState::Up {
             return Ok(());
@@ -275,16 +294,21 @@ impl Repeater {
 
 #[cfg(not(has_drtio_routing))]
 #[derive(Clone, Copy, Default)]
-pub struct Repeater {
+pub struct Repeater {}
-}
 
 #[cfg(not(has_drtio_routing))]
 impl Repeater {
-    pub fn new(_repno: u8) -> Repeater { Repeater::default() }
+    pub fn new(_repno: u8) -> Repeater {
+        Repeater::default()
+    }
 
-    pub fn service(&self, _routing_table: &drtio_routing::RoutingTable, _rank: u8, _timer: &mut GlobalTimer) { }
+    pub fn service(&self, _routing_table: &drtio_routing::RoutingTable, _rank: u8, _timer: &mut GlobalTimer) {}
 
-    pub fn sync_tsc(&self, _timer: &mut GlobalTimer) -> Result<(), drtioaux::Error> { Ok(()) }
+    pub fn sync_tsc(&self, _timer: &mut GlobalTimer) -> Result<(), drtioaux::Error> {
+        Ok(())
+    }
 
-    pub fn rtio_reset(&self, _timer: &mut GlobalTimer) -> Result<(), drtioaux::Error> { Ok(()) }
+    pub fn rtio_reset(&self, _timer: &mut GlobalTimer) -> Result<(), drtioaux::Error> {
+        Ok(())
+    }
 }