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Diffstat (limited to 'src/runtime/sys_windows_amd64.s')
| -rw-r--r-- | src/runtime/sys_windows_amd64.s | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/runtime/sys_windows_amd64.s b/src/runtime/sys_windows_amd64.s index 9c197379fb..9679099c4e 100644 --- a/src/runtime/sys_windows_amd64.s +++ b/src/runtime/sys_windows_amd64.s @@ -45,6 +45,14 @@ loadregs: MOVQ 8(SI), DX MOVQ 16(SI), R8 MOVQ 24(SI), R9 + // Floating point arguments are passed in the XMM + // registers. Set them here in case any of the arguments + // are floating point values. For details see + // https://msdn.microsoft.com/en-us/library/zthk2dkh.aspx + MOVQ CX, X0 + MOVQ DX, X1 + MOVQ R8, X2 + MOVQ R9, X3 // Call stdcall function. CALL AX |