mirror of
https://github.com/rwinkhart/sys.git
synced 2026-09-03 15:47:35 -04:00
Rob Pike
20acc5cf31
This CL copies to each package of go.sys the files from syscall it will need.
Different directories have different files, but these:
mkall.sh
str.go
syscall.go
mksyscall.pl
race.go
race0.go
syscall_test.go
are copied to all three.
No changes yet, these are just copies. They are not ready to use yet:
package names are wrong, for starters. But this clean copy will make
it easier to follow the changes as the packages are enabled.
LGTM=rsc
R=golang-codereviews, rsc
CC=golang-codereviews
https://golang.org/cl/126960043
42 lines
892 B
ArmAsm
42 lines
892 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"
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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·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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