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| author | Richard Wilkes <wilkes@me.com> | 2020-02-24 23:46:00 +0000 |
|---|---|---|
| committer | Alex Brainman <alex.brainman@gmail.com> | 2020-02-25 08:36:15 +0000 |
| commit | 450d0b2f30e820f402a638799de0b886c1da8dbe (patch) | |
| tree | f1365fc41a571eda5cb78b149f7818193edbd665 /src/runtime/sys_windows_amd64.s | |
| parent | 0d6b317ee6f232191eadee7ec8c1d4fe98458752 (diff) | |
| download | go-450d0b2f30e820f402a638799de0b886c1da8dbe.tar.xz | |
runtime: allow float syscall return values on windows amd64
RELNOTE=yes
Fixes #37273
Change-Id: Iedb7eab185dfeccb1b26902ef36411d2c53ea3e0
GitHub-Last-Rev: bbe30ba45d4a1bd53757b5824ad28024d5e2b179
GitHub-Pull-Request: golang/go#37380
Reviewed-on: https://go-review.googlesource.com/c/go/+/220578
Run-TryBot: Alex Brainman <alex.brainman@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
Diffstat (limited to 'src/runtime/sys_windows_amd64.s')
| -rw-r--r-- | src/runtime/sys_windows_amd64.s | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/runtime/sys_windows_amd64.s b/src/runtime/sys_windows_amd64.s index d2552e87fa..6c8eecd4e7 100644 --- a/src/runtime/sys_windows_amd64.s +++ b/src/runtime/sys_windows_amd64.s @@ -62,6 +62,10 @@ loadregs: // Return result. POPQ CX MOVQ AX, libcall_r1(CX) + // Floating point return values are returned in XMM0. Setting r2 to this + // value in case this call returned a floating point value. For details, + // see https://docs.microsoft.com/en-us/cpp/build/x64-calling-convention + MOVQ X0, libcall_r2(CX) // GetLastError(). MOVQ 0x30(GS), DI |