/* 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 static 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; } # 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