blob: 816f7dccfbf98ad77b5b67d75c12c2d8d418ff13 [file] [log] [blame]
// 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 "funcdata.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(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