| // Copyright 2019 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, FreeBSD |
| // |
| |
| #define SYS_syscall 0 |
| |
| // func Syscall(trap uintptr, a1, a2, a3 uintptr) (r1, r2, err uintptr) |
| TEXT ·Syscall(SB),NOSPLIT,$0-56 |
| BL runtime·entersyscall<ABIInternal>(SB) |
| MOVD trap+0(FP), R8 // syscall entry |
| MOVD a1+8(FP), R0 |
| MOVD a2+16(FP), R1 |
| MOVD a3+24(FP), R2 |
| SVC $SYS_syscall |
| BCC ok |
| MOVD $-1, R1 |
| MOVD R1, r1+32(FP) |
| MOVD ZR, r2+40(FP) |
| MOVD R0, err+48(FP) |
| BL runtime·exitsyscall<ABIInternal>(SB) |
| RET |
| ok: |
| MOVD R0, r1+32(FP) |
| MOVD R1, r2+40(FP) |
| MOVD ZR, err+48(FP) |
| BL runtime·exitsyscall<ABIInternal>(SB) |
| RET |
| |
| // func RawSyscall(trap uintptr, a1, a2, a3 uintptr) (r1, r2, err uintptr) |
| TEXT ·RawSyscall(SB),NOSPLIT,$0-56 |
| MOVD trap+0(FP), R8 // syscall entry |
| MOVD a1+8(FP), R0 |
| MOVD a2+16(FP), R1 |
| MOVD a3+24(FP), R2 |
| SVC $SYS_syscall |
| BCC ok |
| MOVD $-1, R1 |
| MOVD R1, r1+32(FP) |
| MOVD ZR, r2+40(FP) |
| MOVD R0, err+48(FP) |
| RET |
| ok: |
| MOVD R0, r1+32(FP) |
| MOVD R1, r2+40(FP) |
| MOVD ZR, err+48(FP) |
| RET |
| |
| // func Syscall6(trap uintptr, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, err uintptr) |
| TEXT ·Syscall6(SB),NOSPLIT,$0-80 |
| BL runtime·entersyscall<ABIInternal>(SB) |
| MOVD trap+0(FP), R8 // 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 $SYS_syscall |
| BCC ok |
| MOVD $-1, R1 |
| MOVD R1, r1+56(FP) |
| MOVD ZR, r2+64(FP) |
| MOVD R0, err+72(FP) |
| BL runtime·exitsyscall<ABIInternal>(SB) |
| RET |
| ok: |
| MOVD R0, r1+56(FP) |
| MOVD R1, r2+64(FP) |
| MOVD ZR, err+72(FP) |
| BL runtime·exitsyscall<ABIInternal>(SB) |
| RET |
| |
| // func RawSyscall6(trap uintptr, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, err uintptr) |
| TEXT ·RawSyscall6(SB),NOSPLIT,$0-80 |
| MOVD trap+0(FP), R8 // 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 $SYS_syscall |
| BCC ok |
| MOVD $-1, R1 |
| MOVD R1, r1+56(FP) |
| MOVD ZR, r2+64(FP) |
| MOVD R0, err+72(FP) |
| RET |
| ok: |
| MOVD R0, r1+56(FP) |
| MOVD R1, r2+64(FP) |
| MOVD ZR, err+72(FP) |
| RET |
| |
| // Actually Syscall7 |
| // func Syscall9(num uintptr, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2, err uintptr) |
| TEXT ·Syscall9(SB),NOSPLIT,$0-104 |
| BL runtime·entersyscall<ABIInternal>(SB) |
| MOVD num+0(FP), R8 // 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 $SYS_syscall |
| BCC ok |
| MOVD $-1, R1 |
| MOVD R1, r1+80(FP) |
| MOVD ZR, r2+88(FP) |
| MOVD R0, err+96(FP) |
| BL runtime·exitsyscall<ABIInternal>(SB) |
| RET |
| ok: |
| MOVD R0, r1+80(FP) |
| MOVD R1, r2+88(FP) |
| MOVD ZR, err+96(FP) |
| BL runtime·exitsyscall<ABIInternal>(SB) |
| RET |
