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Relax constraints a bit to compile on aarch64.

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This commit is contained in:
losfair
2019-09-15 18:23:42 +08:00
parent d3227f830c
commit 9b77677e4b
4 changed files with 110 additions and 84 deletions
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18
lib/runtime-core/src/fault.rs
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@ -1,9 +1,13 @@
pub mod raw {
use std::ffi::c_void;
#[cfg(target_arch = "x86_64")]
extern "C" {
pub fn run_on_alternative_stack(stack_end: *mut u64, stack_begin: *mut u64) -> u64;
pub fn register_preservation_trampoline(); // NOT safe to call directly
}
extern "C" {
pub fn setjmp(env: *mut c_void) -> i32;
pub fn longjmp(env: *mut c_void, val: i32) -> !;
}
@ -25,13 +29,14 @@ use std::process;
use std::sync::atomic::{AtomicBool, Ordering};
use std::sync::Once;
#[cfg(target_arch = "x86_64")]
pub(crate) unsafe fn run_on_alternative_stack(stack_end: *mut u64, stack_begin: *mut u64) -> u64 {
raw::run_on_alternative_stack(stack_end, stack_begin)
}
const TRAP_STACK_SIZE: usize = 1048576; // 1MB
const SETJMP_BUFFER_LEN: usize = 27;
const SETJMP_BUFFER_LEN: usize = 128;
type SetJmpBuffer = [i32; SETJMP_BUFFER_LEN];
struct UnwindInfo {
@ -181,6 +186,12 @@ unsafe fn with_breakpoint_map<R, F: FnOnce(Option<&BreakpointMap>) -> R>(f: F) -
f(inner.breakpoints.as_ref())
}
#[cfg(not(target_arch = "x86_64"))]
pub fn allocate_and_run<R, F: FnOnce() -> R>(size: usize, f: F) -> R {
unimplemented!("allocate_and_run only supported on x86_64");
}
#[cfg(target_arch = "x86_64")]
pub fn allocate_and_run<R, F: FnOnce() -> R>(size: usize, f: F) -> R {
struct Context<F: FnOnce() -> R, R> {
f: Option<F>,
@ -353,6 +364,11 @@ pub struct FaultInfo {
pub known_registers: [Option<u64>; 24],
}
#[cfg(target_arch = "aarch64")]
pub unsafe fn get_fault_info(siginfo: *const c_void, ucontext: *const c_void) -> FaultInfo {
unimplemented!("get_fault_info is not yet implemented for aarch64.");
}
#[cfg(all(target_os = "linux", target_arch = "x86_64"))]
pub unsafe fn get_fault_info(siginfo: *const c_void, ucontext: *const c_void) -> FaultInfo {
use libc::{