mirror of
https://github.com/rwinkhart/sys.git
synced 2026-08-28 04:46:44 -04:00
Rob Pike
8768103c90
Darwin/amd64 now builds. No others tested yet. mkall.sh also runs correctly. The updates, which are substantial, are not yet applied to avoid unnecessary churn. Restore mkerrors.sh, which is needed in the unix directory. LGTM=rsc R=rsc CC=golang-codereviews https://golang.org/cl/122410044
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 "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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