mirror of
https://github.com/rwinkhart/sys.git
synced 2026-08-31 22:36:44 -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
42 lines
907 B
ArmAsm
42 lines
907 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 "../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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