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Add the temporary panic support for LoongArch

This commit is contained in:
王英泰 2025-07-08 15:27:13 +08:00 committed by Tate, Hongliang Tian
parent ef1d26d81b
commit b0b242edbc
2 changed files with 34 additions and 7 deletions
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7
ostd/Cargo.toml
View File

@ -34,7 +34,6 @@ ostd-test = { version = "0.15.2", path = "libs/ostd-test" }
ostd-pod = { git = "https://github.com/asterinas/ostd-pod", rev = "c4644be", version = "0.1.1" }
spin = "0.9.4"
smallvec = "1.13.2"
unwinding = { version = "=0.2.5", default-features = false, features = ["fde-gnu-eh-frame-hdr", "hide-trace", "panic", "personality", "unwinder"] }
volatile = "0.6.1"
bitvec = { version = "1.0", default-features = false, features = ["alloc"] }
@ -51,11 +50,17 @@ iced-x86 = { version = "1.21.0", default-features = false, features = [
"gas",
], optional = true }
tdx-guest = { version = "0.2.1", optional = true }
unwinding = { version = "=0.2.5", default-features = false, features = ["fde-gnu-eh-frame-hdr", "hide-trace", "panic", "personality", "unwinder"] }
[target.riscv64gc-unknown-none-elf.dependencies]
riscv = { version = "0.11.1", features = ["s-mode"] }
sbi-rt = "0.0.3"
fdt = { version = "0.1.5", features = ["pretty-printing"] }
unwinding = { version = "=0.2.5", default-features = false, features = ["fde-gnu-eh-frame-hdr", "hide-trace", "panic", "personality", "unwinder"] }
[target.loongarch64-unknown-none.dependencies]
loongArch64 = "0.2.5"
fdt = { version = "0.1.5", features = ["pretty-printing"] }
[features]
default = ["cvm_guest"]

34
ostd/src/panic.rs
View File

@ -4,8 +4,6 @@
use core::ffi::c_void;
pub use unwinding::panic::{begin_panic, catch_unwind};
use crate::{
arch::qemu::{exit_qemu, QemuExitCode},
early_print, early_println,
@ -16,10 +14,6 @@ extern crate cfg_if;
extern crate gimli;
use gimli::Register;
use unwinding::abi::{
UnwindContext, UnwindReasonCode, _Unwind_Backtrace, _Unwind_FindEnclosingFunction,
_Unwind_GetGR, _Unwind_GetIP,
};
/// The default panic handler for OSTD based kernels.
///
@ -52,10 +46,19 @@ pub fn abort() -> ! {
exit_qemu(QemuExitCode::Failed);
}
#[cfg(not(target_arch = "loongarch64"))]
pub use unwinding::panic::{begin_panic, catch_unwind};
/// Prints the stack trace of the current thread to the console.
///
/// The printing procedure is protected by a spin lock to prevent interleaving.
#[cfg(not(target_arch = "loongarch64"))]
pub fn print_stack_trace() {
use unwinding::abi::{
UnwindContext, UnwindReasonCode, _Unwind_Backtrace, _Unwind_FindEnclosingFunction,
_Unwind_GetGR, _Unwind_GetIP,
};
/// We acquire a global lock to prevent the frames in the stack trace from
/// interleaving. The spin lock is used merely for its simplicity.
static BACKTRACE_PRINT_LOCK: SpinLock<()> = SpinLock::new(());
@ -106,3 +109,22 @@ pub fn print_stack_trace() {
let mut data = CallbackData { counter: 0 };
_Unwind_Backtrace(callback, &mut data as *mut _ as _);
}
#[cfg(target_arch = "loongarch64")]
pub fn catch_unwind<R, F: FnOnce() -> R>(
f: F,
) -> Result<R, alloc::boxed::Box<dyn core::any::Any + Send>> {
// TODO: Support unwinding in LoongArch.
Ok(f())
}
#[cfg(target_arch = "loongarch64")]
pub fn begin_panic<R>(_: alloc::boxed::Box<R>) {
// TODO: Support panic context in LoongArch.
}
#[cfg(target_arch = "loongarch64")]
pub fn print_stack_trace() {
// TODO: Support stack trace print in LoongArch.
early_println!("Printing stack trace:");
}