| // Copyright 2015 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" |
| |
| // func rawVforkSyscall(trap, a1, a2, a3 uintptr) (r1, err uintptr) |
| TEXT ·rawVforkSyscall(SB),NOSPLIT,$0-48 |
| MOVD a1+8(FP), R0 |
| MOVD a2+16(FP), R1 |
| MOVD a3+24(FP), R2 |
| MOVD $0, R3 |
| MOVD $0, R4 |
| MOVD $0, R5 |
| MOVD trap+0(FP), R8 // syscall entry |
| SVC |
| CMN $4095, R0 |
| BCC ok |
| MOVD $-1, R4 |
| MOVD R4, r1+32(FP) // r1 |
| NEG R0, R0 |
| MOVD R0, err+40(FP) // errno |
| RET |
| ok: |
| MOVD R0, r1+32(FP) // r1 |
| MOVD ZR, err+40(FP) // errno |
| RET |
| |
| // func rawSyscallNoError(trap uintptr, a1, a2, a3 uintptr) (r1, r2 uintptr); |
| TEXT ·rawSyscallNoError(SB),NOSPLIT,$0-48 |
| MOVD a1+8(FP), R0 |
| MOVD a2+16(FP), R1 |
| MOVD a3+24(FP), R2 |
| MOVD $0, R3 |
| MOVD $0, R4 |
| MOVD $0, R5 |
| MOVD trap+0(FP), R8 // syscall entry |
| SVC |
| MOVD R0, r1+32(FP) |
| MOVD R1, r2+40(FP) |
| RET |
