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https://github.com/freebsd/freebsd-src
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839529caa9
Some notable improvements include: readelf: - Add AArch64 relocation definitions. - Report value of unknown relocation types. elfcopy: - Consider symbols with STB_GNU_UNIQUE binding as global symbols. - Fixed support for VMA adjustment for loadable sections found in relocatable objects. - Handle nameless global symbols. - Improve wildcard matching for !-prefixed symbols. - Add PE/COFF support. elfdump: - Improve section type reporting. - Add MIPS-specific section types. This update also includes a significant number of bug fixes. PR: 207091 [exp-run] Sponsored by: The FreeBSD Foundation
108 lines
3 KiB
C
108 lines
3 KiB
C
/*-
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* Copyright (c) 2009 Kai Wang
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* All rights reserved.
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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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* in this position and unchanged.
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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 AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/param.h>
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#include <assert.h>
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#include <errno.h>
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#include <libelftc.h>
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#include <stdlib.h>
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#include <string.h>
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#include "_libelftc.h"
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ELFTC_VCSID("$Id: elftc_demangle.c 3296 2016-01-09 14:17:28Z jkoshy $");
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static unsigned int
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is_mangled(const char *s, unsigned int style)
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{
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switch (style) {
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case ELFTC_DEM_ARM: return (is_cpp_mangled_ARM(s) ? style : 0);
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case ELFTC_DEM_GNU2: return (is_cpp_mangled_gnu2(s) ? style : 0);
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case ELFTC_DEM_GNU3: return (is_cpp_mangled_gnu3(s) ? style : 0);
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}
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/* No style or invalid style spcified, try to guess. */
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if (is_cpp_mangled_gnu3(s))
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return (ELFTC_DEM_GNU3);
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if (is_cpp_mangled_gnu2(s))
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return (ELFTC_DEM_GNU2);
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if (is_cpp_mangled_ARM(s))
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return (ELFTC_DEM_ARM);
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/* Cannot be demangled. */
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return (0);
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}
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static char *
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demangle(const char *s, unsigned int style, unsigned int rc)
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{
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(void) rc; /* XXX */
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switch (style) {
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case ELFTC_DEM_ARM: return (cpp_demangle_ARM(s));
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case ELFTC_DEM_GNU2: return (cpp_demangle_gnu2(s));
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case ELFTC_DEM_GNU3: return (cpp_demangle_gnu3(s));
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default:
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assert(0);
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return (NULL);
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}
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}
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int
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elftc_demangle(const char *mangledname, char *buffer, size_t bufsize,
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unsigned int flags)
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{
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unsigned int style, rc;
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char *rlt;
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style = flags & 0xFFFF;
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rc = flags >> 16;
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if (mangledname == NULL ||
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((style = is_mangled(mangledname, style)) == 0)) {
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errno = EINVAL;
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return (-1);
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}
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if ((rlt = demangle(mangledname, style, rc)) == NULL) {
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errno = EINVAL;
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return (-1);
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}
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if (buffer == NULL || bufsize < strlen(rlt) + 1) {
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free(rlt);
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errno = ENAMETOOLONG;
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return (-1);
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}
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strncpy(buffer, rlt, bufsize);
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buffer[bufsize - 1] = '\0';
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free(rlt);
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return (0);
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}
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