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| author | Andrew Kelley <andrew@ziglang.org> | 2023-01-02 14:08:50 -0700 |
|---|---|---|
| committer | Andrew Kelley <andrew@ziglang.org> | 2023-01-02 14:08:50 -0700 |
| commit | 72560b8db525ac81877799035ef093d9badd6bfd (patch) | |
| tree | a574ee1fd11375a0778c7eda2905ffb410bbff92 | |
| parent | 4776128099e3c5096ee7365a59dd73adce04f0e9 (diff) | |
| download | zig-72560b8db525ac81877799035ef093d9badd6bfd.tar.gz zig-72560b8db525ac81877799035ef093d9badd6bfd.zip | |
add some comments to explain workarounds
| -rw-r--r-- | lib/std/os/windows.zig | 2 | ||||
| -rw-r--r-- | lib/std/zig/system/x86.zig | 4 |
2 files changed, 6 insertions, 0 deletions
diff --git a/lib/std/os/windows.zig b/lib/std/os/windows.zig index 268e13a379..2a4d0d9a9b 100644 --- a/lib/std/os/windows.zig +++ b/lib/std/os/windows.zig @@ -1776,6 +1776,8 @@ pub fn UnlockFile( } } +/// This is a workaround for the C backend until zig has the ability to put +/// C code in inline assembly. extern fn zig_x86_64_windows_teb() callconv(.C) *anyopaque; pub fn teb() *TEB { diff --git a/lib/std/zig/system/x86.zig b/lib/std/zig/system/x86.zig index 634a04fb43..873659e58c 100644 --- a/lib/std/zig/system/x86.zig +++ b/lib/std/zig/system/x86.zig @@ -528,6 +528,8 @@ const CpuidLeaf = packed struct { edx: u32, }; +/// This is a workaround for the C backend until zig has the ability to put +/// C code in inline assembly. extern fn zig_x86_cpuid(leaf_id: u32, subid: u32, eax: *u32, ebx: *u32, ecx: *u32, edx: *u32) callconv(.C) void; fn cpuid(leaf_id: u32, subid: u32) CpuidLeaf { @@ -553,6 +555,8 @@ fn cpuid(leaf_id: u32, subid: u32) CpuidLeaf { return .{ .eax = eax, .ebx = ebx, .ecx = ecx, .edx = edx }; } +/// This is a workaround for the C backend until zig has the ability to put +/// C code in inline assembly. extern fn zig_x86_get_xcr0() callconv(.C) u32; // Read control register 0 (XCR0). Used to detect features such as AVX. |