mirror of https://github.com/golang/go.git
49 lines
1.2 KiB
ArmAsm
49 lines
1.2 KiB
ArmAsm
// +build dragonfly freebsd
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// Copyright 2016 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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// Syscall9 support for AMD64, DragonFly and FreeBSD
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//
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// func Syscall9(trap int64, a1, a2, a3, a4, a5, a6, a7, a8, a9 int64) (r1, r2, err int64);
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TEXT ·Syscall9(SB),NOSPLIT,$0-104
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CALL runtime·entersyscall(SB)
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MOVQ num+0(FP), AX // syscall entry
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MOVQ a1+8(FP), DI
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MOVQ a2+16(FP), SI
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MOVQ a3+24(FP), DX
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MOVQ a4+32(FP), R10
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MOVQ a5+40(FP), R8
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MOVQ a6+48(FP), R9
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// shift around the last three arguments so they're at the
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// top of the stack when the syscall is called.
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// note that we are scribbling over the Go arguments now.
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MOVQ SP, CX // hide (SP) writes from vet
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MOVQ a7+56(FP), R11 // arg 7
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MOVQ R11, 8(CX)
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MOVQ a8+64(FP), R11 // arg 8
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MOVQ R11, 16(CX)
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MOVQ a9+72(FP), R11 // arg 9
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MOVQ R11, 24(CX)
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SYSCALL
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JCC ok9
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MOVQ $-1, r1+80(FP) // r1
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MOVQ $0, r2+88(FP) // r2
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MOVQ AX, err+96(FP) // errno
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CALL runtime·exitsyscall(SB)
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RET
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ok9:
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MOVQ AX, r1+80(FP) // r1
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MOVQ DX, r2+88(FP) // r2
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MOVQ $0, err+96(FP) // errno
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CALL runtime·exitsyscall(SB)
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RET
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