File size: 2,954 Bytes
04dc9f2 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 | // 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, NetBSD
//
#define SYS_syscall 0
// func Syscall(trap uintptr, a1, a2, a3 uintptr) (r1, r2, err uintptr)
TEXT 路Syscall(SB),NOSPLIT,$0-56
BL runtime路entersyscall<ABIInternal>(SB)
MOVD trap+0(FP), R17
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) // r1
MOVD ZR, r2+40(FP) // r2
MOVD R0, err+48(FP) // err
BL runtime路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路exitsyscall<ABIInternal>(SB)
RET
// func RawSyscall(trap uintptr, a1, a2, a3 uintptr) (r1, r2, err uintptr)
TEXT 路RawSyscall(SB),NOSPLIT,$0-56
MOVD trap+0(FP), R17 // 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) // 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 路Syscall6(SB),NOSPLIT,$0-80
BL runtime路entersyscall<ABIInternal>(SB)
MOVD trap+0(FP), R17 // 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) // r1
MOVD ZR, r2+64(FP) // r2
MOVD R0, err+72(FP) // err
BL runtime路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路exitsyscall<ABIInternal>(SB)
RET
// func RawSyscall6(trap uintptr, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, err uintptr)
TEXT 路RawSyscall6(SB),NOSPLIT,$0-80
MOVD trap+0(FP), R17 // 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) // 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 路Syscall9(SB),NOSPLIT,$0-104
BL runtime路entersyscall<ABIInternal>(SB)
MOVD num+0(FP), R17 // 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) // r1
MOVD ZR, r2+88(FP) // r2
MOVD R0, err+96(FP) // err
BL runtime路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路exitsyscall<ABIInternal>(SB)
RET
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