2013-02-12 10:03:25 -07:00
|
|
|
// 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.
|
|
|
|
|
|
|
|
//
|
|
|
|
// 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)
|
|
|
|
|
2013-07-16 14:23:53 -06:00
|
|
|
TEXT ·Syscall(SB),7,$0-28
|
2013-02-12 10:03:25 -07:00
|
|
|
BL runtime·entersyscall(SB)
|
|
|
|
MOVW 0(FP), R0 // sigcall num
|
|
|
|
MOVW 4(FP), R1 // a1
|
|
|
|
MOVW 8(FP), R2 // a2
|
|
|
|
MOVW 12(FP), R3 // a3
|
|
|
|
SWI $0 // syscall
|
|
|
|
MOVW $0, R2
|
|
|
|
BCS error
|
|
|
|
MOVW R0, 16(FP) // r1
|
|
|
|
MOVW R1, 20(FP) // r2
|
|
|
|
MOVW R2, 24(FP) // err
|
|
|
|
BL runtime·exitsyscall(SB)
|
|
|
|
RET
|
|
|
|
error:
|
|
|
|
MOVW $-1, R3
|
|
|
|
MOVW R3, 16(FP) // r1
|
|
|
|
MOVW R2, 20(FP) // r2
|
|
|
|
MOVW R0, 24(FP) // err
|
|
|
|
BL runtime·exitsyscall(SB)
|
|
|
|
RET
|
|
|
|
|
2013-07-16 14:23:53 -06:00
|
|
|
TEXT ·Syscall6(SB),7,$0-40
|
2013-02-12 10:03:25 -07:00
|
|
|
BL runtime·entersyscall(SB)
|
|
|
|
MOVW 0(FP), R0 // sigcall num
|
|
|
|
MOVW 4(FP), R1 // a1
|
|
|
|
MOVW 8(FP), R2 // a2
|
|
|
|
MOVW 12(FP), R3 // a3
|
|
|
|
MOVW R13, R4
|
|
|
|
MOVW $16(FP), R13 // a4 to a6 are passed on stack
|
|
|
|
SWI $0 // syscall
|
|
|
|
MOVW R4, R13
|
|
|
|
MOVW $0, R2
|
|
|
|
BCS error6
|
|
|
|
MOVW R0, 28(FP) // r1
|
|
|
|
MOVW R1, 32(FP) // r2
|
|
|
|
MOVW R2, 36(FP) // err
|
|
|
|
BL runtime·exitsyscall(SB)
|
|
|
|
RET
|
|
|
|
error6:
|
|
|
|
MOVW $-1, R3
|
|
|
|
MOVW R3, 28(FP) // r1
|
|
|
|
MOVW R2, 32(FP) // r2
|
|
|
|
MOVW R0, 36(FP) // err
|
|
|
|
BL runtime·exitsyscall(SB)
|
|
|
|
RET
|
|
|
|
|
2013-07-16 14:23:53 -06:00
|
|
|
TEXT ·Syscall9(SB),7,$0-52
|
2013-02-12 10:03:25 -07:00
|
|
|
BL runtime·entersyscall(SB)
|
|
|
|
MOVW 0(FP), R0 // sigcall num
|
|
|
|
MOVW 4(FP), R1 // a1
|
|
|
|
MOVW 8(FP), R2 // a2
|
|
|
|
MOVW 12(FP), R3 // a3
|
|
|
|
MOVW R13, R4
|
|
|
|
MOVW $16(FP), R13 // a4 to a9 are passed on stack
|
|
|
|
SWI $0 // syscall
|
|
|
|
MOVW R4, R13
|
|
|
|
MOVW $0, R2
|
|
|
|
BCS error9
|
|
|
|
MOVW R0, 40(FP) // r1
|
|
|
|
MOVW R1, 44(FP) // r2
|
|
|
|
MOVW R2, 48(FP) // err
|
|
|
|
BL runtime·exitsyscall(SB)
|
|
|
|
RET
|
|
|
|
error9:
|
|
|
|
MOVW $-1, R3
|
|
|
|
MOVW R3, 40(FP) // r1
|
|
|
|
MOVW R2, 44(FP) // r2
|
|
|
|
MOVW R0, 48(FP) // err
|
|
|
|
BL runtime·exitsyscall(SB)
|
|
|
|
RET
|
|
|
|
|
2013-07-16 14:23:53 -06:00
|
|
|
TEXT ·RawSyscall(SB),7,$0-28
|
2013-02-12 10:03:25 -07:00
|
|
|
MOVW 0(FP), R0 // sigcall num
|
|
|
|
MOVW 4(FP), R1 // a1
|
|
|
|
MOVW 8(FP), R2 // a2
|
|
|
|
MOVW 12(FP), R3 // a3
|
|
|
|
SWI $0 // syscall
|
|
|
|
MOVW $0, R2
|
|
|
|
BCS errorr
|
|
|
|
MOVW R0, 16(FP) // r1
|
|
|
|
MOVW R1, 20(FP) // r2
|
|
|
|
MOVW R2, 24(FP) // err
|
|
|
|
RET
|
|
|
|
errorr:
|
|
|
|
MOVW $-1, R3
|
|
|
|
MOVW R3, 16(FP) // r1
|
|
|
|
MOVW R2, 20(FP) // r2
|
|
|
|
MOVW R0, 24(FP) // err
|
|
|
|
RET
|
|
|
|
|
2013-07-16 14:23:53 -06:00
|
|
|
TEXT ·RawSyscall6(SB),7,$0-40
|
2013-02-12 10:03:25 -07:00
|
|
|
MOVW 0(FP), R0 // sigcall num
|
|
|
|
MOVW 4(FP), R1 // a1
|
|
|
|
MOVW 8(FP), R2 // a2
|
|
|
|
MOVW 12(FP), R3 // a3
|
|
|
|
MOVW R13, R4
|
|
|
|
MOVW $16(FP), R13 // a4 to a9 are passed on stack
|
|
|
|
SWI $0 // syscall
|
|
|
|
MOVW R4, R13
|
|
|
|
MOVW $0, R2
|
|
|
|
BCS errorr6
|
|
|
|
MOVW R0, 28(FP) // r1
|
|
|
|
MOVW R1, 32(FP) // r2
|
|
|
|
MOVW R2, 36(FP) // err
|
|
|
|
RET
|
|
|
|
errorr6:
|
|
|
|
MOVW $-1, R3
|
|
|
|
MOVW R3, 28(FP) // r1
|
|
|
|
MOVW R2, 32(FP) // r2
|
|
|
|
MOVW R0, 36(FP) // err
|
|
|
|
RET
|