// 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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#include "funcdata.h"
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//
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// System call support for ARM, OpenBSD
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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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// func RawSyscall(trap int32, a1, a2, a3 int32) (r1, r2, err int32);
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// func RawSyscall6(trap int32, a1, a2, a3, a4, a5, a6 int32) (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 trap+0(FP), R12 // syscall number
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MOVW a1+4(FP), R0 // arg 1
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MOVW a2+8(FP), R1 // arg 2
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MOVW a3+12(FP), R2 // arg 3
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SWI $0
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MOVW $0, R2
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BCS error
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MOVW R0, r1+16(FP) // ret 1
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MOVW R1, r2+20(FP) // ret 2
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MOVW R2, err+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, r1+16(FP) // ret 1
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MOVW R2, r2+20(FP) // ret 2
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MOVW R0, err+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 trap+0(FP), R12 // syscall number
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MOVW a1+4(FP), R0 // arg 1
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MOVW a2+8(FP), R1 // arg 2
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MOVW a3+12(FP), R2 // arg 3
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MOVW a4+16(FP), R3 // arg 4
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MOVW R13, R4
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MOVW $a5+20(FP), R13 // arg 5 to arg 6 are passed on stack
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SWI $0
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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, r1+28(FP) // ret 1
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MOVW R1, r2+32(FP) // ret 2
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MOVW R2, err+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, r1+28(FP) // ret 1
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MOVW R2, r2+32(FP) // ret 2
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MOVW R0, err+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 num+0(FP), R12 // syscall number
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MOVW a1+4(FP), R0 // arg 1
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MOVW a2+8(FP), R1 // arg 2
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MOVW a3+12(FP), R2 // arg 3
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MOVW a4+16(FP), R3 // arg 4
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MOVW R13, R4
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MOVW $a5+20(FP), R13 // arg 5 to arg 9 are passed on stack
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SWI $0
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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, r1+40(FP) // ret 1
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MOVW R1, r2+44(FP) // ret 2
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MOVW R2, err+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, r1+40(FP) // ret 1
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MOVW R2, r2+44(FP) // ret 2
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MOVW R0, err+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 trap+0(FP), R12 // syscall number
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MOVW a1+4(FP), R0 // arg 1
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MOVW a2+8(FP), R1 // arg 2
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MOVW a3+12(FP), R2 // arg 3
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SWI $0
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MOVW $0, R2
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BCS errorr
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MOVW R0, r1+16(FP) // ret 1
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MOVW R1, r2+20(FP) // ret 2
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MOVW R2, err+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, r1+16(FP) // ret 1
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MOVW R2, r2+20(FP) // ret 2
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MOVW R0, err+24(FP) // err
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RET
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TEXT ·RawSyscall6(SB),NOSPLIT,$0-40
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MOVW trap+0(FP), R12 // syscall number
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MOVW a1+4(FP), R0 // arg 1
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MOVW a2+8(FP), R1 // arg 2
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MOVW a3+12(FP), R2 // arg 3
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MOVW a4+16(FP), R3 // arg 4
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MOVW R13, R4
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MOVW $a5+20(FP), R13 // arg 5 to arg 6 are passed on stack
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SWI $0
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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, r1+28(FP) // ret 1
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MOVW R1, r2+32(FP) // ret 2
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MOVW R2, err+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, r1+28(FP) // ret 1
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MOVW R2, r2+32(FP) // ret 2
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MOVW R0, err+36(FP) // err
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RET
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