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author | Kai Wang <kaiw@FreeBSD.org> | 2014-01-15 08:43:20 +0000 |
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committer | Kai Wang <kaiw@FreeBSD.org> | 2014-01-15 08:43:20 +0000 |
commit | 5265ace0e440a23fb522c516f4ee20f43eaed2b3 (patch) | |
tree | 13068447bb61372f7540b168e913b8eb88ef7578 /libelftc/elftc_demangle.c | |
download | src-5265ace0e440a23fb522c516f4ee20f43eaed2b3.tar.gz src-5265ace0e440a23fb522c516f4ee20f43eaed2b3.zip |
Initial import of elftoolchain r2974.vendor/elftoolchain/elftoolchain-r2974
Obtained from: elftoolchain.org
Notes
Notes:
svn path=/vendor/elftoolchain/dist/; revision=260684
svn path=/vendor/elftoolchain/elftoolchain-r2974/; revision=260685; tag=vendor/elftoolchain/elftoolchain-r2974
Diffstat (limited to 'libelftc/elftc_demangle.c')
-rw-r--r-- | libelftc/elftc_demangle.c | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/libelftc/elftc_demangle.c b/libelftc/elftc_demangle.c new file mode 100644 index 000000000000..c55564e3df63 --- /dev/null +++ b/libelftc/elftc_demangle.c @@ -0,0 +1,110 @@ +/*- + * 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/cdefs.h> + +#include <sys/param.h> +#include <assert.h> +#include <errno.h> +#include <libelf.h> +#include <libelftc.h> +#include <stdlib.h> +#include <string.h> + +#include "_libelftc.h" + +ELFTC_VCSID("$Id: elftc_demangle.c 2065 2011-10-26 15:24:47Z jkoshy $"); + +static int +is_mangled(const char *s, 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, int style, 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) +{ + 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); +} |