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
44 lines
981 B
ArmAsm
44 lines
981 B
ArmAsm
// Copyright 2014 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 ARM, Native Client
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//
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#define NACL_SYSCALL(code) \
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MOVW $(0x10000 + ((code)<<5)), R8; BL (R8)
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#define NACL_SYSJMP(code) \
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MOVW $(0x10000 + ((code)<<5)), R8; B (R8)
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TEXT unix·Syscall(SB),NOSPLIT,$0-28
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BL runtime·entersyscall(SB)
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MOVW trap+0(FP), R8
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MOVW a1+4(FP), R0
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MOVW a2+8(FP), R1
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MOVW a3+12(FP), R2
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// more args would use R3, and then stack.
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MOVW $0x10000, R7
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ADD R8<<5, R7
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BL (R7)
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CMP $0, R0
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BGE ok
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MOVW $-1, R1
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MOVW R1, r1+16(FP)
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MOVW R1, r2+20(FP)
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RSB $0, R0
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MOVW R0, err+24(FP)
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BL runtime·exitsyscall(SB)
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RET
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ok:
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MOVW R0, r1+16(FP)
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MOVW R1, r2+20(FP)
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MOVW $0, R2
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MOVW R2, err+24(FP)
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BL runtime·exitsyscall(SB)
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RET
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