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// 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