mirror of
https://github.com/rwinkhart/sys.git
synced 2026-09-01 14:47:28 -04:00
Rob Pike
20acc5cf31
This CL copies to each package of go.sys the files from syscall it will need.
Different directories have different files, but these:
mkall.sh
str.go
syscall.go
mksyscall.pl
race.go
race0.go
syscall_test.go
are copied to all three.
No changes yet, these are just copies. They are not ready to use yet:
package names are wrong, for starters. But this clean copy will make
it easier to follow the changes as the packages are enabled.
LGTM=rsc
R=golang-codereviews, rsc
CC=golang-codereviews
https://golang.org/cl/126960043
127 lines
2.7 KiB
ArmAsm
127 lines
2.7 KiB
ArmAsm
// Copyright 2013 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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#include "../../cmd/ld/textflag.h"
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//
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// System call support for ARM, NetBSD
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//
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// func Syscall(trap int32, a1, a2, a3 int32) (r1, r2, err int32);
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// func Syscall6(trap int32, a1, a2, a3, a4, a5, a6 int32) (r1, r2, err int32);
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// func Syscall9(trap int32, a1, a2, a3, a4, a5, a6, a7, a8, a9 int64) (r1, r2, err int32)
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TEXT ·Syscall(SB),NOSPLIT,$0-28
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BL runtime·entersyscall(SB)
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MOVW 0(FP), R0 // sigcall num
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MOVW 4(FP), R1 // a1
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MOVW 8(FP), R2 // a2
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MOVW 12(FP), R3 // a3
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SWI $0 // syscall
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MOVW $0, R2
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BCS error
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MOVW R0, 16(FP) // r1
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MOVW R1, 20(FP) // r2
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MOVW R2, 24(FP) // err
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BL runtime·exitsyscall(SB)
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RET
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error:
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MOVW $-1, R3
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MOVW R3, 16(FP) // r1
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MOVW R2, 20(FP) // r2
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MOVW R0, 24(FP) // err
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BL runtime·exitsyscall(SB)
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RET
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TEXT ·Syscall6(SB),NOSPLIT,$0-40
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BL runtime·entersyscall(SB)
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MOVW 0(FP), R0 // sigcall num
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MOVW 4(FP), R1 // a1
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MOVW 8(FP), R2 // a2
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MOVW 12(FP), R3 // a3
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MOVW R13, R4
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MOVW $16(FP), R13 // a4 to a6 are passed on stack
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SWI $0 // syscall
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MOVW R4, R13
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MOVW $0, R2
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BCS error6
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MOVW R0, 28(FP) // r1
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MOVW R1, 32(FP) // r2
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MOVW R2, 36(FP) // err
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BL runtime·exitsyscall(SB)
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RET
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error6:
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MOVW $-1, R3
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MOVW R3, 28(FP) // r1
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MOVW R2, 32(FP) // r2
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MOVW R0, 36(FP) // err
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BL runtime·exitsyscall(SB)
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RET
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TEXT ·Syscall9(SB),NOSPLIT,$0-52
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BL runtime·entersyscall(SB)
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MOVW 0(FP), R0 // sigcall num
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MOVW 4(FP), R1 // a1
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MOVW 8(FP), R2 // a2
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MOVW 12(FP), R3 // a3
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MOVW R13, R4
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MOVW $16(FP), R13 // a4 to a9 are passed on stack
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SWI $0 // syscall
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MOVW R4, R13
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MOVW $0, R2
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BCS error9
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MOVW R0, 40(FP) // r1
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MOVW R1, 44(FP) // r2
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MOVW R2, 48(FP) // err
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BL runtime·exitsyscall(SB)
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RET
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error9:
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MOVW $-1, R3
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MOVW R3, 40(FP) // r1
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MOVW R2, 44(FP) // r2
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MOVW R0, 48(FP) // err
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BL runtime·exitsyscall(SB)
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RET
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TEXT ·RawSyscall(SB),NOSPLIT,$0-28
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MOVW 0(FP), R0 // sigcall num
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MOVW 4(FP), R1 // a1
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MOVW 8(FP), R2 // a2
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MOVW 12(FP), R3 // a3
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SWI $0 // syscall
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MOVW $0, R2
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BCS errorr
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MOVW R0, 16(FP) // r1
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MOVW R1, 20(FP) // r2
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MOVW R2, 24(FP) // err
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RET
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errorr:
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MOVW $-1, R3
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MOVW R3, 16(FP) // r1
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MOVW R2, 20(FP) // r2
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MOVW R0, 24(FP) // err
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RET
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TEXT ·RawSyscall6(SB),NOSPLIT,$0-40
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MOVW 0(FP), R0 // sigcall num
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MOVW 4(FP), R1 // a1
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MOVW 8(FP), R2 // a2
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MOVW 12(FP), R3 // a3
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MOVW R13, R4
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MOVW $16(FP), R13 // a4 to a9 are passed on stack
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SWI $0 // syscall
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MOVW R4, R13
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MOVW $0, R2
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BCS errorr6
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MOVW R0, 28(FP) // r1
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MOVW R1, 32(FP) // r2
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MOVW R2, 36(FP) // err
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RET
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errorr6:
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MOVW $-1, R3
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MOVW R3, 28(FP) // r1
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MOVW R2, 32(FP) // r2
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MOVW R0, 36(FP) // err
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RET
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