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
86 lines
2.7 KiB
C
86 lines
2.7 KiB
C
/*-
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* Copyright (c) 2013 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 Matt Thomas of 3am Software Foundry.
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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 <sys/cdefs.h>
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#ifndef lint
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__RCSID("$NetBSD: find_exidx.c,v 1.3 2013/05/03 10:27:06 skrll Exp $");
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#endif /* not lint */
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#include "debug.h"
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#include "rtld.h"
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_Unwind_Ptr
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__gnu_Unwind_Find_exidx(_Unwind_Ptr pc, int * pcount)
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{
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const Obj_Entry *obj;
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_Unwind_Ptr start = NULL;
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int count = 0;
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dbg(("__gnu_Unwind_Find_exidx"));
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_rtld_shared_enter();
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vaddr_t va = (vaddr_t)pc;
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for (obj = _rtld_objlist; obj != NULL; obj = obj->next) {
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/*
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* If the address we are looking for is inside this object,
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* we've found the object to inspect.
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*/
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if ((vaddr_t)obj->mapbase <= va
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&& va < (vaddr_t)obj->mapbase + obj->mapsize)
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break;
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}
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/*
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* If we found an object and it has some exception data, we
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* need to see if the address matches a PT_LOAD section.
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*/
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if (obj != NULL && obj->exidx_start != NULL) {
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va -= (vaddr_t)obj->relocbase;
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const Elf_Phdr *ph = obj->phdr;
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const Elf_Phdr * const phlimit = ph + obj->phsize / sizeof(*ph);
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for (; ph < phlimit; ph++) {
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if (ph->p_type == PT_LOAD
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&& ph->p_vaddr <= va
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&& va < ph->p_vaddr + ph->p_memsz) {
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count = obj->exidx_sz / 8;
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start = obj->exidx_start;
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break;
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}
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}
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}
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_rtld_shared_exit();
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/*
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* deal with the return values.
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*/
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*pcount = count;
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return start;
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}
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