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main: rewrap linked_list_allocator

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This commit is contained in:
Astro 2019-10-31 19:20:49 +01:00
parent f688eb83ab
commit 54e4b9281f
3 changed files with 45 additions and 24 deletions
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9
Cargo.lock generated
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@ -24,9 +24,6 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
name = "linked_list_allocator"
version = "0.6.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
"spin 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "managed"
@ -48,11 +45,6 @@ dependencies = [
"managed 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
]
[[package]]
name = "spin"
version = "0.5.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
[[package]]
name = "vcell"
version = "0.1.0"
@ -88,6 +80,5 @@ dependencies = [
"checksum managed 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)" = "fdcec5e97041c7f0f1c5b7d93f12e57293c831c646f4cc7a5db59460c7ea8de6"
"checksum r0 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "e2a38df5b15c8d5c7e8654189744d8e396bddc18ad48041a500ce52d6948941f"
"checksum smoltcp 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "fef582369edb298c6c41319a544ca9c4e83622f226055ccfcb35974fbb55ed34"
"checksum spin 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "6e63cff320ae2c57904679ba7cb63280a3dc4613885beafb148ee7bf9aa9042d"
"checksum vcell 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "45c297f0afb6928cd08ab1ff9d95e99392595ea25ae1b5ecf822ff8764e57a0d"
"checksum volatile-register 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "0d67cb4616d99b940db1d6bd28844ff97108b498a6ca850e5b6191a532063286"

2
Cargo.toml
View File

@ -24,4 +24,4 @@ volatile-register = "0.2"
bit_field = "0.10"
compiler_builtins = { version = "~0.1", default-features = false, features = ["mem", "no-lang-items"]}
smoltcp = { version = "0.5", default-features = false, features = ["proto-ipv4", "socket-tcp"] }
linked_list_allocator = "0.6"
linked_list_allocator = { version = "0.6", default-features = false }

58
src/main.rs
View File

@ -9,6 +9,11 @@
// TODO: disallow unused/dead_code when code moves into a lib crate
#![allow(dead_code)]
extern crate alloc;
use alloc::{vec, vec::Vec, alloc::Layout};
use core::alloc::GlobalAlloc;
use core::ptr::NonNull;
use core::cell::RefCell;
use core::mem::{uninitialized, transmute};
use r0::zero_bss;
use compiler_builtins as _;
@ -16,7 +21,7 @@ use smoltcp::wire::{EthernetAddress, IpAddress, IpCidr};
use smoltcp::iface::{NeighborCache, EthernetInterfaceBuilder, EthernetInterface};
use smoltcp::time::Instant;
use smoltcp::socket::SocketSet;
use linked_list_allocator::LockedHeap;
use linked_list_allocator::Heap;
mod regs;
mod cortex_a9;
@ -84,9 +89,6 @@ fn l1_cache_init() {
dciall();
}
#[global_allocator]
static ALLOCATOR: LockedHeap = LockedHeap::empty();
const HWADDR: [u8; 6] = [0, 0x23, 0xde, 0xea, 0xbe, 0xef];
fn main() {
@ -97,33 +99,38 @@ fn main() {
ddr.memtest();
unsafe {
ALLOCATOR.lock().init(ddr.ptr::<u8>() as usize, ddr.size());
ALLOCATOR.0.borrow_mut()
.init(ddr.ptr::<u8>() as usize, ddr.size());
}
let eth = zynq::eth::Eth::default(HWADDR.clone());
println!("Eth on");
const RX_LEN: usize = 2;
let mut rx_descs: [zynq::eth::rx::DescEntry; RX_LEN] = unsafe { uninitialized() };
let mut rx_buffers = [[0u8; zynq::eth::MTU]; RX_LEN];
const RX_LEN: usize = 8;
let mut rx_descs = (0..RX_LEN)
.map(|_| zynq::eth::rx::DescEntry::zeroed())
.collect::<Vec<_>>();
let mut rx_buffers = vec![[0u8; zynq::eth::MTU]; RX_LEN];
// Number of transmission buffers (minimum is two because with
// one, duplicate packet transmission occurs)
const TX_LEN: usize = 2;
let mut tx_descs: [zynq::eth::tx::DescEntry; TX_LEN] = unsafe { uninitialized() };
let mut tx_buffers = [[0u8; zynq::eth::MTU]; TX_LEN];
const TX_LEN: usize = 8;
let mut tx_descs = (0..TX_LEN)
.map(|_| zynq::eth::tx::DescEntry::zeroed())
.collect::<Vec<_>>();
let mut tx_buffers = vec![[0u8; zynq::eth::MTU]; TX_LEN];
let eth = eth.start_rx(&mut rx_descs, &mut rx_buffers);
//let mut eth = eth.start_tx(&mut tx_descs, &mut tx_buffers);
let mut eth = eth.start_tx(
// HACK
unsafe { transmute(tx_descs.as_mut()) },
unsafe { transmute(tx_buffers.as_mut()) },
unsafe { transmute(tx_descs.as_mut_slice()) },
unsafe { transmute(tx_buffers.as_mut_slice()) },
);
let ethernet_addr = EthernetAddress(HWADDR);
// IP stack
let local_addr = IpAddress::v4(10, 0, 0, 1);
let mut ip_addrs = [IpCidr::new(local_addr, 24)];
let mut neighbor_storage = [None; 16];
let mut neighbor_storage = vec![None; 256];
let neighbor_cache = NeighborCache::new(&mut neighbor_storage[..]);
let mut iface = EthernetInterfaceBuilder::new(&mut eth)
.ethernet_addr(ethernet_addr)
@ -184,6 +191,29 @@ fn panic(info: &core::panic::PanicInfo) -> ! {
loop {}
}
#[global_allocator]
static ALLOCATOR: HeapAlloc = HeapAlloc(RefCell::new(Heap::empty()));
/// LockedHeap doesn't locking properly
struct HeapAlloc(RefCell<Heap>);
/// FIXME: unsound; lock properly
unsafe impl Sync for HeapAlloc {}
unsafe impl GlobalAlloc for HeapAlloc {
unsafe fn alloc(&self, layout: Layout) -> *mut u8 {
self.0.borrow_mut()
.allocate_first_fit(layout)
.ok()
.map_or(0 as *mut u8, |allocation| allocation.as_ptr())
}
unsafe fn dealloc(&self, ptr: *mut u8, layout: Layout) {
self.0.borrow_mut()
.deallocate(NonNull::new_unchecked(ptr), layout)
}
}
#[alloc_error_handler]
fn alloc_error(_: core::alloc::Layout) -> ! {
panic!("alloc_error")