| // 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<ABIInternal>(SB),NOSPLIT,$0-80 | |
| #ifdef GOEXPERIMENT_regabiargs | |
| MOVD R2, R1 | |
| MOVD R3, R2 | |
| MOVD R4, R3 | |
| MOVD R5, R4 | |
| MOVD R6, R5 | |
| MOVD R7, R6 | |
| MOVD R8, R7 | |
| #else | |
| MOVD num+0(FP), R1 // syscall entry | |
| MOVD a1+8(FP), R2 | |
| MOVD a2+16(FP), R3 | |
| MOVD a3+24(FP), R4 | |
| MOVD a4+32(FP), R5 | |
| MOVD a5+40(FP), R6 | |
| MOVD a6+48(FP), R7 | |
| #endif | |
| SYSCALL | |
| MOVD $0xfffffffffffff001, R8 | |
| CMPUBLT R2, R8, ok | |
| #ifdef GOEXPERIMENT_regabiargs | |
| MOVD $0, R3 | |
| NEG R2, R4 | |
| MOVD $-1, R2 | |
| #else | |
| MOVD $-1, r1+56(FP) | |
| MOVD $0, r2+64(FP) | |
| NEG R2, R2 | |
| MOVD R2, errno+72(FP) | |
| #endif | |
| RET | |
| ok: | |
| #ifdef GOEXPERIMENT_regabiargs | |
| MOVD $0, R4 | |
| #else | |
| MOVD R2, r1+56(FP) | |
| MOVD R3, r2+64(FP) | |
| MOVD $0, errno+72(FP) | |
| #endif | |
| RET | |