rustc_target/spec/targets/
aarch64_pc_windows_msvc.rs

1use crate::spec::{FramePointer, Target, TargetMetadata, base};
2
3pub(crate) fn target() -> Target {
4    let mut base = base::windows_msvc::opts();
5    base.max_atomic_width = Some(128);
6    base.features = "+v8a,+neon,+fp-armv8".into();
7
8    // Microsoft recommends enabling frame pointers on Arm64 Windows.
9    // From https://learn.microsoft.com/en-us/cpp/build/arm64-windows-abi-conventions?view=msvc-170#integer-registers
10    // "The frame pointer (x29) is required for compatibility with fast stack walking used by ETW
11    // and other services. It must point to the previous {x29, x30} pair on the stack."
12    base.frame_pointer = FramePointer::NonLeaf;
13
14    Target {
15        llvm_target: "aarch64-pc-windows-msvc".into(),
16        metadata: TargetMetadata {
17            description: Some("ARM64 Windows MSVC".into()),
18            tier: Some(2),
19            host_tools: Some(true),
20            std: Some(true),
21        },
22        pointer_width: 64,
23        data_layout:
24            "e-m:w-p270:32:32-p271:32:32-p272:64:64-p:64:64-i32:32-i64:64-i128:128-n32:64-S128-Fn32"
25                .into(),
26        arch: "aarch64".into(),
27        options: base,
28    }
29}