| // 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 |