| // Copyright 2022 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" |
| |
| // See ../sys_linux_386.s for the reason why we always use int 0x80 |
| // instead of the glibc-specific "CALL 0x10(GS)". |
| #define INVOKE_SYSCALL INT $0x80 |
| |
| // func Syscall6(num, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, errno uintptr) |
| // |
| // Syscall # in AX, args in BX CX DX SI DI BP, return in AX |
| TEXT ·Syscall6(SB),NOSPLIT,$0-40 |
| MOVL num+0(FP), AX // syscall entry |
| MOVL a1+4(FP), BX |
| MOVL a2+8(FP), CX |
| MOVL a3+12(FP), DX |
| MOVL a4+16(FP), SI |
| MOVL a5+20(FP), DI |
| MOVL a6+24(FP), BP |
| INVOKE_SYSCALL |
| CMPL AX, $0xfffff001 |
| JLS ok |
| MOVL $-1, r1+28(FP) |
| MOVL $0, r2+32(FP) |
| NEGL AX |
| MOVL AX, errno+36(FP) |
| RET |
| ok: |
| MOVL AX, r1+28(FP) |
| MOVL DX, r2+32(FP) |
| MOVL $0, errno+36(FP) |
| RET |
