| // 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" | |
| #include "funcdata.h" | |
| // | |
| // System call support for 386, Darwin | |
| // | |
| // func Syscall(trap int32, a1, a2, a3 int32) (r1, r2, err int32); | |
| // func Syscall6(trap int32, a1, a2, a3, a4, a5, a6 int32) (r1, r2, err int32); | |
| // Trap # in AX, args on stack above caller pc. | |
| TEXT ·Syscall(SB),NOSPLIT,$0-28 | |
| CALL runtime·entersyscall(SB) | |
| MOVL trap+0(FP), AX // syscall entry | |
| // slide args down on top of system call number | |
| LEAL a1+4(FP), SI | |
| LEAL trap+0(FP), DI | |
| CLD | |
| MOVSL | |
| MOVSL | |
| MOVSL | |
| INT $0x80 | |
| JAE ok | |
| MOVL $-1, r1+16(FP) | |
| MOVL $-1, r2+20(FP) | |
| 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 | |
| TEXT ·Syscall6(SB),NOSPLIT,$0-40 | |
| CALL runtime·entersyscall(SB) | |
| MOVL trap+0(FP), AX // syscall entry | |
| // slide args down on top of system call number | |
| LEAL a1+4(FP), SI | |
| LEAL trap+0(FP), DI | |
| CLD | |
| MOVSL | |
| MOVSL | |
| MOVSL | |
| MOVSL | |
| MOVSL | |
| MOVSL | |
| INT $0x80 | |
| JAE ok6 | |
| MOVL $-1, r1+28(FP) | |
| MOVL $-1, r2+32(FP) | |
| MOVL AX, err+36(FP) | |
| CALL runtime·exitsyscall(SB) | |
| RET | |
| ok6: | |
| MOVL AX, r1+28(FP) | |
| MOVL DX, r2+32(FP) | |
| MOVL $0, err+36(FP) | |
| CALL runtime·exitsyscall(SB) | |
| RET | |
| TEXT ·Syscall9(SB),NOSPLIT,$0-52 | |
| CALL runtime·entersyscall(SB) | |
| MOVL num+0(FP), AX // syscall entry | |
| // slide args down on top of system call number | |
| LEAL a1+4(FP), SI | |
| LEAL num+0(FP), DI | |
| CLD | |
| MOVSL | |
| MOVSL | |
| MOVSL | |
| MOVSL | |
| MOVSL | |
| MOVSL | |
| MOVSL | |
| MOVSL | |
| MOVSL | |
| INT $0x80 | |
| JAE ok9 | |
| MOVL $-1, r1+40(FP) | |
| MOVL $-1, r2+44(FP) | |
| MOVL AX, err+48(FP) | |
| CALL runtime·exitsyscall(SB) | |
| RET | |
| ok9: | |
| MOVL AX, r1+40(FP) | |
| MOVL DX, r2+44(FP) | |
| MOVL $0, err+48(FP) | |
| CALL runtime·exitsyscall(SB) | |
| RET | |
| TEXT ·RawSyscall(SB),NOSPLIT,$0-28 | |
| MOVL trap+0(FP), AX // syscall entry | |
| // slide args down on top of system call number | |
| LEAL a1+4(FP), SI | |
| LEAL trap+0(FP), DI | |
| CLD | |
| MOVSL | |
| MOVSL | |
| MOVSL | |
| INT $0x80 | |
| JAE ok1 | |
| MOVL $-1, r1+16(FP) | |
| MOVL $-1, r2+20(FP) | |
| MOVL AX, err+24(FP) | |
| RET | |
| ok1: | |
| MOVL AX, r1+16(FP) | |
| MOVL DX, r2+20(FP) | |
| MOVL $0, err+24(FP) | |
| RET | |
| TEXT ·RawSyscall6(SB),NOSPLIT,$0-40 | |
| MOVL trap+0(FP), AX // syscall entry | |
| // slide args down on top of system call number | |
| LEAL a1+4(FP), SI | |
| LEAL trap+0(FP), DI | |
| CLD | |
| MOVSL | |
| MOVSL | |
| MOVSL | |
| MOVSL | |
| MOVSL | |
| MOVSL | |
| INT $0x80 | |
| JAE ok2 | |
| MOVL $-1, r1+28(FP) | |
| MOVL $-1, r2+32(FP) | |
| MOVL AX, err+36(FP) | |
| RET | |
| ok2: | |
| MOVL AX, r1+28(FP) | |
| MOVL DX, r2+32(FP) | |
| MOVL $0, err+36(FP) | |
| RET |