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ksupport: handle riscv exceptions

This commit is contained in:
occheung 2021-08-11 12:20:41 +08:00
parent 50a62b3d42
commit 905330b0f1
2 changed files with 8 additions and 4 deletions
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2
artiq/firmware/ksupport/Cargo.toml
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@ -19,4 +19,4 @@ io = { path = "../libio", features = ["byteorder"] }
dyld = { path = "../libdyld" } dyld = { path = "../libdyld" }
board_misoc = { path = "../libboard_misoc" } board_misoc = { path = "../libboard_misoc" }
board_artiq = { path = "../libboard_artiq" } board_artiq = { path = "../libboard_artiq" }
proto_artiq = { path = "../libproto_artiq" } riscv = { version = "0.6.0", features = ["inline-asm"] }

10
artiq/firmware/ksupport/lib.rs
View File

@ -12,8 +12,9 @@ extern crate dyld;
extern crate board_misoc; extern crate board_misoc;
extern crate board_artiq; extern crate board_artiq;
extern crate proto_artiq; extern crate proto_artiq;
extern crate riscv;
use core::{mem, ptr, slice, str}; use core::{mem, ptr, slice, str, convert::TryFrom};
use cslice::{CSlice, AsCSlice}; use cslice::{CSlice, AsCSlice};
use io::Cursor; use io::Cursor;
use dyld::Library; use dyld::Library;
@ -22,6 +23,7 @@ use proto_artiq::{kernel_proto, rpc_proto};
use kernel_proto::*; use kernel_proto::*;
#[cfg(has_rtio_dma)] #[cfg(has_rtio_dma)]
use board_misoc::csr; use board_misoc::csr;
use riscv::register::{mcause, mepc};
fn send(request: &Message) { fn send(request: &Message) {
unsafe { mailbox::send(request as *const _ as usize) } unsafe { mailbox::send(request as *const _ as usize) }
@ -519,8 +521,10 @@ pub unsafe fn main() {
#[no_mangle] #[no_mangle]
#[unwind(allowed)] #[unwind(allowed)]
pub extern fn exception(vect: u32, _regs: *const u32, pc: u32, ea: u32) { pub extern fn exception(_regs: *const u32) {
panic!("exception {:?} at PC 0x{:x}, EA 0x{:x}", vect, pc, ea) let pc = mepc::read();
let cause = mcause::read().cause();
panic!("{:?} at PC {:#08x}", cause, u32::try_from(pc).unwrap())
} }
#[no_mangle] #[no_mangle]