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71ab9fa312
Add missing function prototypes. Fix function prototypes. Use FP references instead of SP references. Fix variable names. Update comments. Clean up whitespace. (Not for vet.) All fairly minor fixes to make vet happy. Updates #11041 Change-Id: Ifab2cdf235ff61cdc226ab1d84b8467b5ac9446c Reviewed-on: https://go-review.googlesource.com/27713 Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
167 lines
2.9 KiB
ArmAsm
167 lines
2.9 KiB
ArmAsm
// Copyright 2009 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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// TODO(rsc): Rewrite all nn(SP) references into name+(nn-8)(FP)
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// so that go vet can check that they are correct.
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#include "textflag.h"
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#include "funcdata.h"
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//
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// System call support for 386, Plan 9
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//
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//func Syscall(trap, a1, a2, a3 uintptr) (r1, r2 uintptr, err string)
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//func Syscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err string)
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//func RawSyscall(trap, a1, a2, a3 uintptr) (r1, r2, err uintptr)
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//func RawSyscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, err uintptr)
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// Trap # in AX, args on stack above caller pc.
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TEXT ·Syscall(SB),NOSPLIT,$0-32
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CALL runtime·entersyscall(SB)
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MOVL trap+0(FP), AX // syscall entry
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// slide args down on top of system call number
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LEAL 8(SP), SI
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LEAL 4(SP), DI
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CLD
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MOVSL
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MOVSL
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MOVSL
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INT $64
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MOVL AX, r1+20(SP)
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MOVL $0, r2+24(SP)
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CMPL AX, $-1
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JNE ok3
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SUBL $8, SP
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CALL runtime·errstr(SB)
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MOVL SP, SI
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ADDL $8, SP
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JMP copyresult3
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ok3:
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LEAL runtime·emptystring(SB), SI
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copyresult3:
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LEAL err+28(SP), DI
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CLD
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MOVSL
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MOVSL
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CALL runtime·exitsyscall(SB)
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RET
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TEXT ·Syscall6(SB),NOSPLIT,$0-44
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CALL runtime·entersyscall(SB)
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MOVL trap+0(FP), AX // syscall entry
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// slide args down on top of system call number
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LEAL 8(SP), SI
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LEAL 4(SP), DI
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CLD
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MOVSL
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MOVSL
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MOVSL
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MOVSL
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MOVSL
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MOVSL
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INT $64
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MOVL AX, r1+32(SP)
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MOVL $0, r2+36(SP)
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CMPL AX, $-1
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JNE ok4
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SUBL $8, SP
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CALL runtime·errstr(SB)
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MOVL SP, SI
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ADDL $8, SP
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JMP copyresult4
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ok4:
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LEAL runtime·emptystring(SB), SI
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copyresult4:
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LEAL err+40(SP), DI
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CLD
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MOVSL
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MOVSL
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CALL runtime·exitsyscall(SB)
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RET
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TEXT ·RawSyscall(SB),NOSPLIT,$0-28
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MOVL trap+0(FP), AX // syscall entry
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// slide args down on top of system call number
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LEAL 8(SP), SI
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LEAL 4(SP), DI
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CLD
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MOVSL
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MOVSL
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MOVSL
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INT $64
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MOVL AX, r1+20(SP)
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MOVL AX, r2+24(SP)
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MOVL AX, err+28(SP)
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RET
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TEXT ·RawSyscall6(SB),NOSPLIT,$0-40
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MOVL trap+0(SP), AX // syscall entry
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// slide args down on top of system call number
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LEAL 8(SP), SI
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LEAL 4(SP), DI
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CLD
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MOVSL
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MOVSL
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MOVSL
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MOVSL
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MOVSL
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MOVSL
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INT $64
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MOVL AX, r1+32(SP)
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MOVL AX, r2+36(SP)
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MOVL AX, err+40(SP)
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RET
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#define SYS_SEEK 39 /* from zsysnum_plan9_386.go */
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//func seek(placeholder uintptr, fd int, offset int64, whence int) (newoffset int64, err string)
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TEXT ·seek(SB),NOSPLIT,$0-36
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LEAL newoffset+24(SP), AX
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MOVL AX, placeholder+4(SP)
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MOVL $SYS_SEEK, AX // syscall entry
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INT $64
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CMPL AX, $-1
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JNE ok6
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MOVL AX, newoffset_lo+20(FP)
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MOVL AX, newoffset_hi+24(FP)
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SUBL $8, SP
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CALL syscall·errstr(SB)
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MOVL SP, SI
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ADDL $8, SP
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JMP copyresult6
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ok6:
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LEAL runtime·emptystring(SB), SI
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copyresult6:
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LEAL err+32(SP), DI
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CLD
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MOVSL
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MOVSL
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RET
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//func exit(code int)
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// Import runtime·exit for cleanly exiting.
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TEXT ·exit(SB),NOSPLIT,$4-4
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NO_LOCAL_POINTERS
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MOVL code+0(FP), AX
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MOVL AX, 0(SP)
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CALL runtime·exit(SB)
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RET
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