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| author | Tianon Gravi <admwiggin@gmail.com> | 2015-01-15 11:54:00 -0700 |
|---|---|---|
| committer | Tianon Gravi <admwiggin@gmail.com> | 2015-01-15 11:54:00 -0700 |
| commit | f154da9e12608589e8d5f0508f908a0c3e88a1bb (patch) | |
| tree | f8255d51e10c6f1e0ed69702200b966c9556a431 /src/runtime/cgo/asm_amd64.s | |
| parent | 8d8329ed5dfb9622c82a9fbec6fd99a580f9c9f6 (diff) | |
| download | golang-f154da9e12608589e8d5f0508f908a0c3e88a1bb.tar.gz | |
Imported Upstream version 1.4upstream/1.4
Diffstat (limited to 'src/runtime/cgo/asm_amd64.s')
| -rw-r--r-- | src/runtime/cgo/asm_amd64.s | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/src/runtime/cgo/asm_amd64.s b/src/runtime/cgo/asm_amd64.s new file mode 100644 index 000000000..6095bd133 --- /dev/null +++ b/src/runtime/cgo/asm_amd64.s @@ -0,0 +1,47 @@ +// Copyright 2009 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +#include "textflag.h" + +/* + * void crosscall2(void (*fn)(void*, int32), void*, int32) + * Save registers and call fn with two arguments. + */ +TEXT crosscall2(SB),NOSPLIT,$0 + SUBQ $0x58, SP /* keeps stack pointer 32-byte aligned */ + MOVQ BX, 0x10(SP) + MOVQ BP, 0x18(SP) + MOVQ R12, 0x20(SP) + MOVQ R13, 0x28(SP) + MOVQ R14, 0x30(SP) + MOVQ R15, 0x38(SP) + +#ifdef GOOS_windows + // Win64 save RBX, RBP, RDI, RSI, RSP, R12, R13, R14, and R15 + MOVQ DI, 0x40(SP) + MOVQ SI, 0x48(SP) + + MOVQ DX, 0(SP) /* arg */ + MOVQ R8, 8(SP) /* argsize (includes padding) */ + + CALL CX /* fn */ + + MOVQ 0x40(SP), DI + MOVQ 0x48(SP), SI +#else + MOVQ SI, 0(SP) /* arg */ + MOVQ DX, 8(SP) /* argsize (includes padding) */ + + CALL DI /* fn */ +#endif + + MOVQ 0x10(SP), BX + MOVQ 0x18(SP), BP + MOVQ 0x20(SP), R12 + MOVQ 0x28(SP), R13 + MOVQ 0x30(SP), R14 + MOVQ 0x38(SP), R15 + + ADDQ $0x58, SP + RET |