| // 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" | |
| // | |
| // System call support for ARM64, Darwin | |
| // | |
| // func Syscall(trap uintptr, a1, a2, a3 uintptr) (r1, r2, err uintptr) | |
| TEXT 路Syscall(SB),NOSPLIT,$0-56 | |
| BL runtime路entersyscall<ABIInternal>(SB) | |
| MOVD trap+0(FP), R16 | |
| MOVD a1+8(FP), R0 | |
| MOVD a2+16(FP), R1 | |
| MOVD a3+24(FP), R2 | |
| SVC $0x80 | |
| BCC ok | |
| MOVD $-1, R1 | |
| MOVD R1, r1+32(FP) // r1 | |
| MOVD ZR, r2+40(FP) // r2 | |
| MOVD R0, err+48(FP) // err | |
| BL runtime路exitsyscall<ABIInternal>(SB) | |
| RET | |
| ok: | |
| MOVD R0, r1+32(FP) // r1 | |
| MOVD R1, r2+40(FP) // r2 | |
| MOVD ZR, err+48(FP) // err | |
| BL runtime路exitsyscall<ABIInternal>(SB) | |
| RET | |
| // func RawSyscall(trap uintptr, a1, a2, a3 uintptr) (r1, r2, err uintptr) | |
| TEXT 路RawSyscall(SB),NOSPLIT,$0-56 | |
| MOVD trap+0(FP), R16 // syscall entry | |
| MOVD a1+8(FP), R0 | |
| MOVD a2+16(FP), R1 | |
| MOVD a3+24(FP), R2 | |
| SVC $0x80 | |
| BCC ok | |
| MOVD $-1, R1 | |
| MOVD R1, r1+32(FP) // r1 | |
| MOVD ZR, r2+40(FP) // r2 | |
| MOVD R0, err+48(FP) // err | |
| RET | |
| ok: | |
| MOVD R0, r1+32(FP) // r1 | |
| MOVD R1, r2+40(FP) // r2 | |
| MOVD ZR, err+48(FP) // err | |
| RET | |
| // func Syscall6(trap uintptr, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, err uintptr) | |
| TEXT 路Syscall6(SB),NOSPLIT,$0-80 | |
| BL runtime路entersyscall<ABIInternal>(SB) | |
| MOVD trap+0(FP), R16 // syscall entry | |
| MOVD a1+8(FP), R0 | |
| MOVD a2+16(FP), R1 | |
| MOVD a3+24(FP), R2 | |
| MOVD a4+32(FP), R3 | |
| MOVD a5+40(FP), R4 | |
| MOVD a6+48(FP), R5 | |
| SVC $0x80 | |
| BCC ok | |
| MOVD $-1, R1 | |
| MOVD R1, r1+56(FP) // r1 | |
| MOVD ZR, r2+64(FP) // r2 | |
| MOVD R0, err+72(FP) // err | |
| BL runtime路exitsyscall<ABIInternal>(SB) | |
| RET | |
| ok: | |
| MOVD R0, r1+56(FP) // r1 | |
| MOVD R1, r2+64(FP) // r2 | |
| MOVD ZR, err+72(FP) // err | |
| BL runtime路exitsyscall<ABIInternal>(SB) | |
| RET | |
| // func RawSyscall6(trap uintptr, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, err uintptr) | |
| TEXT 路RawSyscall6(SB),NOSPLIT,$0-80 | |
| MOVD trap+0(FP), R16 // syscall entry | |
| MOVD a1+8(FP), R0 | |
| MOVD a2+16(FP), R1 | |
| MOVD a3+24(FP), R2 | |
| MOVD a4+32(FP), R3 | |
| MOVD a5+40(FP), R4 | |
| MOVD a6+48(FP), R5 | |
| SVC $0x80 | |
| BCC ok | |
| MOVD $-1, R1 | |
| MOVD R1, r1+56(FP) // r1 | |
| MOVD ZR, r2+64(FP) // r2 | |
| MOVD R0, err+72(FP) // err | |
| RET | |
| ok: | |
| MOVD R0, r1+56(FP) // r1 | |
| MOVD R1, r2+64(FP) // r2 | |
| MOVD ZR, R0 | |
| MOVD R0, err+72(FP) // err | |
| RET | |
| // Actually Syscall7 | |
| TEXT 路Syscall9(SB),NOSPLIT,$0-104 | |
| BL runtime路entersyscall<ABIInternal>(SB) | |
| MOVD num+0(FP), R16 // syscall entry | |
| MOVD a1+8(FP), R0 | |
| MOVD a2+16(FP), R1 | |
| MOVD a3+24(FP), R2 | |
| MOVD a4+32(FP), R3 | |
| MOVD a5+40(FP), R4 | |
| MOVD a6+48(FP), R5 | |
| MOVD a7+56(FP), R6 | |
| //MOVD a8+64(FP), R7 | |
| //MOVD a9+72(FP), R8 | |
| SVC $0x80 | |
| BCC ok | |
| MOVD $-1, R1 | |
| MOVD R1, r1+80(FP) // r1 | |
| MOVD ZR, r2+88(FP) // r2 | |
| MOVD R0, err+96(FP) // err | |
| BL runtime路exitsyscall<ABIInternal>(SB) | |
| RET | |
| ok: | |
| MOVD R0, r1+80(FP) // r1 | |
| MOVD R1, r2+88(FP) // r2 | |
| MOVD ZR, err+96(FP) // err | |
| BL runtime路exitsyscall<ABIInternal>(SB) | |
| RET | |