1// Copyright 2009 The Go Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style
3// license that can be found in the LICENSE file.
4
5//go:build gc
6
7#include "textflag.h"
8
9//
10// System calls for 386, Linux
11//
12
13// See ../runtime/sys_linux_386.s for the reason why we always use int 0x80
14// instead of the glibc-specific "CALL 0x10(GS)".
15#define INVOKE_SYSCALL INT $0x80
16
17// Just jump to package syscall's implementation for all these functions.
18// The runtime may know about them.
19
20TEXT 路Syscall(SB),NOSPLIT,$0-28
21 JMP syscall路Syscall(SB)
22
23TEXT 路Syscall6(SB),NOSPLIT,$0-40
24 JMP syscall路Syscall6(SB)
25
26TEXT 路SyscallNoError(SB),NOSPLIT,$0-24
27 CALL runtime路entersyscall(SB)
28 MOVL trap+0(FP), AX // syscall entry
29 MOVL a1+4(FP), BX
30 MOVL a2+8(FP), CX
31 MOVL a3+12(FP), DX
32 MOVL $0, SI
33 MOVL $0, DI
34 INVOKE_SYSCALL
35 MOVL AX, r1+16(FP)
36 MOVL DX, r2+20(FP)
37 CALL runtime路exitsyscall(SB)
38 RET
39
40TEXT 路RawSyscall(SB),NOSPLIT,$0-28
41 JMP syscall路RawSyscall(SB)
42
43TEXT 路RawSyscall6(SB),NOSPLIT,$0-40
44 JMP syscall路RawSyscall6(SB)
45
46TEXT 路RawSyscallNoError(SB),NOSPLIT,$0-24
47 MOVL trap+0(FP), AX // syscall entry
48 MOVL a1+4(FP), BX
49 MOVL a2+8(FP), CX
50 MOVL a3+12(FP), DX
51 MOVL $0, SI
52 MOVL $0, DI
53 INVOKE_SYSCALL
54 MOVL AX, r1+16(FP)
55 MOVL DX, r2+20(FP)
56 RET
57
58TEXT 路socketcall(SB),NOSPLIT,$0-36
59 JMP syscall路socketcall(SB)
60
61TEXT 路rawsocketcall(SB),NOSPLIT,$0-36
62 JMP syscall路rawsocketcall(SB)
63
64TEXT 路seek(SB),NOSPLIT,$0-28
65 JMP syscall路seek(SB)