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| // 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 ·Syscall(SB),NOSPLIT,$0-56
| BL runtime·entersyscall(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·exitsyscall(SB)
| RET
| ok:
| MOVD R0, r1+32(FP) // r1
| MOVD R1, r2+40(FP) // r2
| MOVD ZR, err+48(FP) // err
| BL runtime·exitsyscall(SB)
| RET
|
| // func RawSyscall(trap uintptr, a1, a2, a3 uintptr) (r1, r2, err uintptr)
| TEXT ·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 ·Syscall6(SB),NOSPLIT,$0-80
| BL runtime·entersyscall(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·exitsyscall(SB)
| RET
| ok:
| MOVD R0, r1+56(FP) // r1
| MOVD R1, r2+64(FP) // r2
| MOVD ZR, err+72(FP) // err
| BL runtime·exitsyscall(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), 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 ·Syscall9(SB),NOSPLIT,$0-104
| BL runtime·entersyscall(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·exitsyscall(SB)
| RET
| ok:
| MOVD R0, r1+80(FP) // r1
| MOVD R1, r2+88(FP) // r2
| MOVD ZR, err+96(FP) // err
| BL runtime·exitsyscall(SB)
| RET
|
|
