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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<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·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·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), 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<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·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·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), 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<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·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·exitsyscall<ABIInternal>(SB) RET