| // 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 路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 路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 | |