diff options
Diffstat (limited to 'src/syscall/asm_nacl_amd64p32.s')
| -rw-r--r-- | src/syscall/asm_nacl_amd64p32.s | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/src/syscall/asm_nacl_amd64p32.s b/src/syscall/asm_nacl_amd64p32.s new file mode 100644 index 000000000..b91e09bd6 --- /dev/null +++ b/src/syscall/asm_nacl_amd64p32.s @@ -0,0 +1,41 @@ +// Copyright 2013 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" +#include "../runtime/syscall_nacl.h" + +// +// System call support for amd64, Native Client +// + +#define NACL_SYSCALL(code) \ + MOVL $(0x10000 + ((code)<<5)), AX; CALL AX + +#define NACL_SYSJMP(code) \ + MOVL $(0x10000 + ((code)<<5)), AX; JMP AX + +TEXT syscall·Syscall(SB),NOSPLIT,$0-28 + CALL runtime·entersyscall(SB) + MOVL trap+0(FP), AX + MOVL a1+4(FP), DI + MOVL a2+8(FP), SI + MOVL a3+12(FP), DX + // more args would use CX, R8, R9 + SHLL $5, AX + ADDL $0x10000, AX + CALL AX + CMPL AX, $0 + JGE ok + MOVL $-1, r1+16(FP) + MOVL $-1, r2+20(FP) + NEGL AX + MOVL AX, err+24(FP) + CALL runtime·exitsyscall(SB) + RET +ok: + MOVL AX, r1+16(FP) + MOVL DX, r2+20(FP) + MOVL $0, err+24(FP) + CALL runtime·exitsyscall(SB) + RET |