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/*-
* Copyright (c) 2009 Kai Wang
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer
* in this position and unchanged.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/param.h>
#include <assert.h>
#include <errno.h>
#include <libelftc.h>
#include <stdlib.h>
#include <string.h>
#include "_libelftc.h"
ELFTC_VCSID("$Id: elftc_demangle.c 3296 2016-01-09 14:17:28Z jkoshy $");
static unsigned int
is_mangled(const char *s, unsigned int style)
{
switch (style) {
case ELFTC_DEM_ARM: return (is_cpp_mangled_ARM(s) ? style : 0);
case ELFTC_DEM_GNU2: return (is_cpp_mangled_gnu2(s) ? style : 0);
case ELFTC_DEM_GNU3: return (is_cpp_mangled_gnu3(s) ? style : 0);
}
/* No style or invalid style spcified, try to guess. */
if (is_cpp_mangled_gnu3(s))
return (ELFTC_DEM_GNU3);
if (is_cpp_mangled_gnu2(s))
return (ELFTC_DEM_GNU2);
if (is_cpp_mangled_ARM(s))
return (ELFTC_DEM_ARM);
/* Cannot be demangled. */
return (0);
}
static char *
demangle(const char *s, unsigned int style, unsigned int rc)
{
(void) rc; /* XXX */
switch (style) {
case ELFTC_DEM_ARM: return (cpp_demangle_ARM(s));
case ELFTC_DEM_GNU2: return (cpp_demangle_gnu2(s));
case ELFTC_DEM_GNU3: return (cpp_demangle_gnu3(s));
default:
assert(0);
return (NULL);
}
}
int
elftc_demangle(const char *mangledname, char *buffer, size_t bufsize,
unsigned int flags)
{
unsigned int style, rc;
char *rlt;
style = flags & 0xFFFF;
rc = flags >> 16;
if (mangledname == NULL ||
((style = is_mangled(mangledname, style)) == 0)) {
errno = EINVAL;
return (-1);
}
if ((rlt = demangle(mangledname, style, rc)) == NULL) {
errno = EINVAL;
return (-1);
}
if (buffer == NULL || bufsize < strlen(rlt) + 1) {
free(rlt);
errno = ENAMETOOLONG;
return (-1);
}
strncpy(buffer, rlt, bufsize);
buffer[bufsize - 1] = '\0';
free(rlt);
return (0);
}
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