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/* Get loaded objects program headers.
Based on GNU C library (file: libc/elf/dl-iteratephdr.c)
Copyright (C) 2001,2002,2003,2004,2006,2007 Free Software Foundation, Inc.
Contributed by Jakub Jelinek <jakub@redhat.com>, 2001.
Copyright (C) 2008 STMicroelectronics Ltd.
Author: Carmelo Amoroso <carmelo.amoroso@st.com>
Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
*/
#include <link.h>
#include <ldso.h>
/* we want this in libc but nowhere else */
#ifdef __USE_GNU
extern __typeof(dl_iterate_phdr) __dl_iterate_phdr;
hidden_proto(__dl_iterate_phdr)
int
__dl_iterate_phdr (int (*callback) (struct dl_phdr_info *info, size_t size, void *data), void *data)
{
int ret = 0;
#ifndef __ARCH_HAS_NO_SHARED__
struct elf_resolve *l;
struct dl_phdr_info info;
for (l = _dl_loaded_modules; l != NULL; l = l->next) {
info.dlpi_addr = l->loadaddr;
info.dlpi_name = l->libname;
info.dlpi_phdr = l->ppnt;
info.dlpi_phnum = l->n_phent;
ret = callback (&info, sizeof (struct dl_phdr_info), data);
if (ret)
break;
}
#endif
return ret;
}
hidden_def (__dl_iterate_phdr)
# ifdef SHARED
weak_alias(__dl_iterate_phdr, dl_iterate_phdr)
# else
/* dl-support.c defines these and initializes them early on. */
extern ElfW(Phdr) *_dl_phdr;
extern size_t _dl_phnum;
int
dl_iterate_phdr (int (*callback) (struct dl_phdr_info *info,
size_t size, void *data), void *data)
{
if (_dl_phnum != 0)
{
/* This entry describes this statically-linked program itself. */
struct dl_phdr_info info;
int ret;
#if defined(__FDPIC__)
info.dlpi_addr.map = NULL;
info.dlpi_addr.got_value = NULL;
#elif defined(__DSBT__)
info.dlpi_addr.map = NULL;
#else
info.dlpi_addr = 0;
#endif
info.dlpi_name = "";
info.dlpi_phdr = _dl_phdr;
info.dlpi_phnum = _dl_phnum;
ret = (*callback) (&info, sizeof (struct dl_phdr_info), data);
if (ret)
return ret;
}
/* Then invoke callback on loaded modules, if any */
return __dl_iterate_phdr (callback, data);
}
# endif
#endif
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