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https://github.com/golang/go
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a6cb053026
Please see golang.org/cl/2588 for reasons behind the name change. We also need NO_LOCAL_POINTERS for assembly function with non-zero local frame size. Change-Id: Iac60aa7e76f4c2ece3726e28878fd539bfebf7a4 Reviewed-on: https://go-review.googlesource.com/2589 Reviewed-by: Ian Lance Taylor <iant@golang.org>
43 lines
894 B
ArmAsm
43 lines
894 B
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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#include "funcdata.h"
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#include "../runtime/syscall_nacl.h"
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//
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// System call support for amd64, Native Client
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//
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#define NACL_SYSCALL(code) \
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MOVL $(0x10000 + ((code)<<5)), AX; CALL AX
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#define NACL_SYSJMP(code) \
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MOVL $(0x10000 + ((code)<<5)), AX; JMP AX
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TEXT ·Syscall(SB),NOSPLIT,$0-28
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CALL runtime·entersyscall(SB)
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MOVL trap+0(FP), AX
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MOVL a1+4(FP), DI
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MOVL a2+8(FP), SI
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MOVL a3+12(FP), DX
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// more args would use CX, R8, R9
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SHLL $5, AX
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ADDL $0x10000, AX
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CALL AX
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CMPL AX, $0
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JGE ok
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MOVL $-1, r1+16(FP)
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MOVL $-1, r2+20(FP)
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NEGL AX
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MOVL AX, err+24(FP)
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CALL runtime·exitsyscall(SB)
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RET
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ok:
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MOVL AX, r1+16(FP)
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MOVL DX, r2+20(FP)
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MOVL $0, err+24(FP)
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CALL runtime·exitsyscall(SB)
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RET
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