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Add __fastfail for Windows on arm/aarch64

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This commit is contained in:
Ryan Levick 2020-08-27 19:11:48 +02:00
parent 6ead62235a
commit 970e7793bf
2 changed files with 26 additions and 5 deletions
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16
library/std/src/sys/windows/mod.rs
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@ -306,10 +306,20 @@ pub fn dur2timeout(dur: Duration) -> c::DWORD {
/// that function for more information on `__fastfail`
#[allow(unreachable_code)]
pub fn abort_internal() -> ! {
#[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
const FAST_FAIL_FATAL_APP_EXIT: usize = 7;
unsafe {
llvm_asm!("int $$0x29" :: "{ecx}"(7) ::: volatile); // 7 is FAST_FAIL_FATAL_APP_EXIT
crate::intrinsics::unreachable();
cfg_if::cfg_if! {
if #[cfg(any(target_arch = "x86", target_arch = "x86_64"))] {
llvm_asm!("int $$0x29" :: "{ecx}"(FAST_FAIL_FATAL_APP_EXIT) ::: volatile);
crate::intrinsics::unreachable();
} else if #[cfg(target_arch = "arm")] {
llvm_asm!(".inst 0xDEFB" :: "{r0}"(FAST_FAIL_FATAL_APP_EXIT) ::: volatile);
crate::intrinsics::unreachable();
} else if #[cfg(target_arch = "aarch64")] {
llvm_asm!(".inst 0xF003" :: "{x0}"(FAST_FAIL_FATAL_APP_EXIT) ::: volatile);
crate::intrinsics::unreachable();
}
}
}
crate::intrinsics::abort();
}