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| // Copyright 2009 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"
| #include "funcdata.h"
|
| //
| // System call support for AMD64, Darwin
| //
|
| // Trap # in AX, args in DI SI DX, return in AX DX
|
| // func Syscall(trap, a1, a2, a3 uintptr) (r1, r2 uintptr, err Errno);
| TEXT ·Syscall(SB),NOSPLIT,$0-56
| CALL runtime·entersyscall(SB)
| MOVQ a1+8(FP), DI
| MOVQ a2+16(FP), SI
| MOVQ a3+24(FP), DX
| MOVQ $0, R10
| MOVQ $0, R8
| MOVQ $0, R9
| MOVQ trap+0(FP), AX // syscall entry
| ADDQ $0x2000000, AX
| SYSCALL
| JCC ok
| MOVQ $-1, r1+32(FP)
| MOVQ $0, r2+40(FP)
| MOVQ AX, err+48(FP)
| CALL runtime·exitsyscall(SB)
| RET
| ok:
| MOVQ AX, r1+32(FP)
| MOVQ DX, r2+40(FP)
| MOVQ $0, err+48(FP)
| CALL runtime·exitsyscall(SB)
| RET
|
| // func Syscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err Errno);
| TEXT ·Syscall6(SB),NOSPLIT,$0-80
| CALL runtime·entersyscall(SB)
| MOVQ a1+8(FP), DI
| MOVQ a2+16(FP), SI
| MOVQ a3+24(FP), DX
| MOVQ a4+32(FP), R10
| MOVQ a5+40(FP), R8
| MOVQ a6+48(FP), R9
| MOVQ trap+0(FP), AX // syscall entry
| ADDQ $0x2000000, AX
| SYSCALL
| JCC ok6
| MOVQ $-1, r1+56(FP)
| MOVQ $0, r2+64(FP)
| MOVQ AX, err+72(FP)
| CALL runtime·exitsyscall(SB)
| RET
| ok6:
| MOVQ AX, r1+56(FP)
| MOVQ DX, r2+64(FP)
| MOVQ $0, err+72(FP)
| CALL runtime·exitsyscall(SB)
| RET
|
| // func Syscall9(trap, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr, err Errno)
| TEXT ·Syscall9(SB),NOSPLIT,$0-104
| CALL runtime·entersyscall(SB)
| MOVQ trap+0(FP), AX // syscall entry
| MOVQ a1+8(FP), DI
| MOVQ a2+16(FP), SI
| MOVQ a3+24(FP), DX
| MOVQ a4+32(FP), R10
| MOVQ a5+40(FP), R8
| MOVQ a6+48(FP), R9
| MOVQ a7+56(FP), R11
| MOVQ a8+64(FP), R12
| MOVQ a9+72(FP), R13
| SUBQ $32, SP
| MOVQ R11, 8(SP)
| MOVQ R12, 16(SP)
| MOVQ R13, 24(SP)
| ADDQ $0x2000000, AX
| SYSCALL
| JCC ok9
| ADDQ $32, SP
| MOVQ $-1, r1+80(FP)
| MOVQ $0, r2+88(FP)
| MOVQ AX, err+96(FP)
| CALL runtime·exitsyscall(SB)
| RET
| ok9:
| ADDQ $32, SP
| MOVQ AX, r1+80(FP)
| MOVQ DX, r2+88(FP)
| MOVQ $0, err+96(FP)
| CALL runtime·exitsyscall(SB)
| RET
|
| // func RawSyscall(trap, a1, a2, a3 uintptr) (r1, r2 uintptr, err Errno)
| TEXT ·RawSyscall(SB),NOSPLIT,$0-56
| MOVQ a1+8(FP), DI
| MOVQ a2+16(FP), SI
| MOVQ a3+24(FP), DX
| MOVQ $0, R10
| MOVQ $0, R8
| MOVQ $0, R9
| MOVQ trap+0(FP), AX // syscall entry
| ADDQ $0x2000000, AX
| SYSCALL
| JCC ok1
| MOVQ $-1, r1+32(FP)
| MOVQ $0, r2+40(FP)
| MOVQ AX, err+48(FP)
| RET
| ok1:
| MOVQ AX, r1+32(FP)
| MOVQ DX, r2+40(FP)
| MOVQ $0, err+48(FP)
| RET
|
| // func RawSyscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err Errno)
| TEXT ·RawSyscall6(SB),NOSPLIT,$0-80
| MOVQ a1+8(FP), DI
| MOVQ a2+16(FP), SI
| MOVQ a3+24(FP), DX
| MOVQ a4+32(FP), R10
| MOVQ a5+40(FP), R8
| MOVQ a6+48(FP), R9
| MOVQ trap+0(FP), AX // syscall entry
| ADDQ $0x2000000, AX
| SYSCALL
| JCC ok2
| MOVQ $-1, r1+56(FP)
| MOVQ $0, r2+64(FP)
| MOVQ AX, err+72(FP)
| RET
| ok2:
| MOVQ AX, r1+56(FP)
| MOVQ DX, r2+64(FP)
| MOVQ $0, err+72(FP)
| RET
|
|
