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Enable non-leaf Frame Pointers for mingw-w64 Arm64 Windows

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Mateusz Mikuła
2025-05-15 21:13:29 +02:00
parent e0d014a3df
commit 7e9aee773a
1 changed files with 7 additions and 1 deletions
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8
compiler/rustc_target/src/spec/targets/aarch64_pc_windows_gnullvm.rs
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@@ -1,4 +1,4 @@
use crate::spec::{Target, TargetMetadata, base};
use crate::spec::{FramePointer, Target, TargetMetadata, base};
pub(crate) fn target() -> Target {
let mut base = base::windows_gnullvm::opts();
@@ -6,6 +6,12 @@ pub(crate) fn target() -> Target {
base.features = "+v8a,+neon,+fp-armv8".into();
base.linker = Some("aarch64-w64-mingw32-clang".into());
// Microsoft recommends enabling frame pointers on Arm64 Windows.
// From https://learn.microsoft.com/en-us/cpp/build/arm64-windows-abi-conventions?view=msvc-170#integer-registers
// "The frame pointer (x29) is required for compatibility with fast stack walking used by ETW
// and other services. It must point to the previous {x29, x30} pair on the stack."
base.frame_pointer = FramePointer::NonLeaf;
Target {
llvm_target: "aarch64-pc-windows-gnu".into(),
metadata: TargetMetadata {