mirror of
https://github.com/rwinkhart/sys.git
synced 2026-08-27 20:36:31 -04:00
Rob Pike
8442dd2c63
Semi-automatic migration from package syscall to package {plan9,windows,unix}.
No builds attempted yet, but this gets a lot of noise behind us so subsequent
CLs will be more concise and easier to follow.
Subsequent CLs will have semantic content.
LGTM=rsc
R=golang-codereviews, rsc
CC=golang-codereviews
https://golang.org/cl/121520043
42 lines
951 B
ArmAsm
42 lines
951 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 "../../cmd/ld/textflag.h" // TODO: how to refer to this?
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#include "../runtime/syscall_nacl.h" // TODO: how to refer to this?
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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 unix·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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