84d9c625bf
- Fix for possible unset uid/gid in toproto
- Fix for default mtree style
- Update libelf
- Importing libexecinfo
- Resynchronize GCC, mpc, gmp, mpfr
- build.sh: Replace params with show-params.
This has been done as the make target has been renamed in the same
way, while a new target named params has been added. This new
target generates a file containing all the parameters, instead of
printing it on the console.
- Update test48 with new etc/services (Fix by Ben Gras <ben@minix3.org)
get getservbyport() out of the inner loop
Change-Id: Ie6ad5226fa2621ff9f0dee8782ea48f9443d2091
84 lines
2.8 KiB
ArmAsm
84 lines
2.8 KiB
ArmAsm
/* $NetBSD: resumecontext.S,v 1.7 2013/09/12 15:36:15 joerg Exp $ */
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/*-
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* Copyright (c) 1999 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Klaus Klein.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <machine/asm.h>
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#include "SYS.h"
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#if defined(LIBC_SCCS) && !defined(lint)
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RCSID("$NetBSD: resumecontext.S,v 1.7 2013/09/12 15:36:15 joerg Exp $")
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#endif /* LIBC_SCCS && !lint */
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/*
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* This assembly-language implementation differs from the (obvious)
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* C-language implementation only in not clobbering the previous
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* function's return address (us), which is the point of the exercise.
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*/
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NENTRY(_resumecontext) /* profiling prologue would clobber TOS */
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leal -(4 + 776)(%esp),%ecx /* retaddr + sizeof (ucontext_t) */
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andl $~(0xf),%ecx /* align on _UC_UCONTEXT_ALIGN */
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movl %ecx,%esp
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PIC_PROLOGUE
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pushl %ecx
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#ifdef __PIC__
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call PIC_PLT(_C_LABEL(_getcontext))
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#else
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call _C_LABEL(_getcontext)
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#endif
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addl $4,%esp
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PIC_EPILOGUE
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movl 4(%esp),%ecx /* uc_link */
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PIC_PROLOGUE
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pushl %ecx /* argument for exit() or setcontext() */
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testl %ecx,%ecx /* link end? */
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jnz 9f /* watch out for local label use in PIC_* */
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/* normal exit */
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#ifdef __PIC__
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call PIC_PLT(_C_LABEL(exit))
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#else
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call _C_LABEL(exit)
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#endif
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/* NOTREACHED */
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9:
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#ifdef __PIC__
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call PIC_PLT(_C_LABEL(setcontext))
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#else
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call _C_LABEL(setcontext)
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#endif
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/* NOTREACHED */
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/* something is wrong, pull the brake */
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pushl $-1
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pushl %eax /* unused return address */
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SYSTRAP(exit)
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