File size: 2,917 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 | // Copyright 2013 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 ARM, NetBSD
//
// func Syscall(trap int32, a1, a2, a3 int32) (r1, r2, err int32);
// func Syscall6(trap int32, a1, a2, a3, a4, a5, a6 int32) (r1, r2, err int32);
// func Syscall9(trap int32, a1, a2, a3, a4, a5, a6, a7, a8, a9 int64) (r1, r2, err int32)
TEXT 路Syscall(SB),NOSPLIT,$0-28
BL runtime路entersyscall(SB)
MOVW trap+0(FP), R0 // sigcall num
MOVW a1+4(FP), R1 // a1
MOVW a2+8(FP), R2 // a2
MOVW a3+12(FP), R3 // a3
SWI $0 // syscall
MOVW $0, R2
BCS error
MOVW R0, r1+16(FP) // r1
MOVW R1, r2+20(FP) // r2
MOVW R2, err+24(FP) // err
BL runtime路exitsyscall(SB)
RET
error:
MOVW $-1, R3
MOVW R3, r1+16(FP) // r1
MOVW R2, r2+20(FP) // r2
MOVW R0, err+24(FP) // err
BL runtime路exitsyscall(SB)
RET
TEXT 路Syscall6(SB),NOSPLIT,$0-40
BL runtime路entersyscall(SB)
MOVW trap+0(FP), R0 // sigcall num
MOVW a1+4(FP), R1 // a1
MOVW a2+8(FP), R2 // a2
MOVW a3+12(FP), R3 // a3
MOVW R13, R4
MOVW $a4+16(FP), R13 // a4 to a6 are passed on stack
SWI $0 // syscall
MOVW R4, R13
MOVW $0, R2
BCS error6
MOVW R0, r1+28(FP) // r1
MOVW R1, r2+32(FP) // r2
MOVW R2, err+36(FP) // err
BL runtime路exitsyscall(SB)
RET
error6:
MOVW $-1, R3
MOVW R3, r1+28(FP) // r1
MOVW R2, r2+32(FP) // r2
MOVW R0, err+36(FP) // err
BL runtime路exitsyscall(SB)
RET
TEXT 路Syscall9(SB),NOSPLIT,$0-52
BL runtime路entersyscall(SB)
MOVW num+0(FP), R0 // sigcall num
MOVW a1+4(FP), R1 // a1
MOVW a2+8(FP), R2 // a2
MOVW a3+12(FP), R3 // a3
MOVW R13, R4
MOVW $a4+16(FP), R13 // a4 to a9 are passed on stack
SWI $0 // syscall
MOVW R4, R13
MOVW $0, R2
BCS error9
MOVW R0, r1+40(FP) // r1
MOVW R1, r2+44(FP) // r2
MOVW R2, err+48(FP) // err
BL runtime路exitsyscall(SB)
RET
error9:
MOVW $-1, R3
MOVW R3, r1+40(FP) // r1
MOVW R2, r2+44(FP) // r2
MOVW R0, err+48(FP) // err
BL runtime路exitsyscall(SB)
RET
TEXT 路RawSyscall(SB),NOSPLIT,$0-28
MOVW trap+0(FP), R0 // sigcall num
MOVW a1+4(FP), R1 // a1
MOVW a2+8(FP), R2 // a2
MOVW a3+12(FP), R3 // a3
SWI $0 // syscall
MOVW $0, R2
BCS errorr
MOVW R0, r1+16(FP) // r1
MOVW R1, r2+20(FP) // r2
MOVW R2, err+24(FP) // err
RET
errorr:
MOVW $-1, R3
MOVW R3, r1+16(FP) // r1
MOVW R2, r2+20(FP) // r2
MOVW R0, err+24(FP) // err
RET
TEXT 路RawSyscall6(SB),NOSPLIT,$0-40
MOVW trap+0(FP), R0 // sigcall num
MOVW a1+4(FP), R1 // a1
MOVW a2+8(FP), R2 // a2
MOVW a3+12(FP), R3 // a3
MOVW R13, R4
MOVW $a4+16(FP), R13 // a4 to a9 are passed on stack
SWI $0 // syscall
MOVW R4, R13
MOVW $0, R2
BCS errorr6
MOVW R0, r1+28(FP) // r1
MOVW R1, r2+32(FP) // r2
MOVW R2, err+36(FP) // err
RET
errorr6:
MOVW $-1, R3
MOVW R3, r1+28(FP) // r1
MOVW R2, r2+32(FP) // r2
MOVW R0, err+36(FP) // err
RET
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