| // 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" | |
| // func Syscall6(num, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, errno uintptr) | |
| TEXT ·Syscall6(SB),NOSPLIT,$0-80 | |
| MOVV num+0(FP), R11 // syscall entry | |
| MOVV a1+8(FP), R4 | |
| MOVV a2+16(FP), R5 | |
| MOVV a3+24(FP), R6 | |
| MOVV a4+32(FP), R7 | |
| MOVV a5+40(FP), R8 | |
| MOVV a6+48(FP), R9 | |
| SYSCALL | |
| MOVW $-4096, R12 | |
| BGEU R12, R4, ok | |
| MOVV $-1, R12 | |
| MOVV R12, r1+56(FP) | |
| MOVV R0, r2+64(FP) | |
| SUBVU R4, R0, R4 | |
| MOVV R4, errno+72(FP) | |
| RET | |
| ok: | |
| MOVV R4, r1+56(FP) | |
| MOVV R0, r2+64(FP) // r2 is not used. Always set to 0. | |
| MOVV R0, errno+72(FP) | |
| RET |