diff options
| -rw-r--r-- | ChangeLog | 18 | ||||
| -rw-r--r-- | elf/Versions | 3 | ||||
| -rw-r--r-- | elf/dl-iteratephdr.c | 61 | ||||
| -rw-r--r-- | elf/link.h | 22 | ||||
| -rw-r--r-- | include/link.h | 15 | ||||
| -rw-r--r-- | sysdeps/generic/dl-iteratephdr-static.c | 31 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/ia64/dl-iteratephdr-static.c | 61 |
7 files changed, 208 insertions, 3 deletions
@@ -1,7 +1,21 @@ +2001-07-25 Jakub Jelinek <jakub@redhat.com> + + * elf/Makefile (routines): Add dl-iteratephdr and + dl-iteratephdr-static. + (elide-routines.os): Add dl-iteratephdr-static. + * elf/dl-iteratephdr.c: New file. + * elf/link.h (struct dl_phdr_info): New definition. + (dl_iterate_phdr): New prototype. + * elf/Versions (dl_iterate_phdr): Add at GLIBC_2.2.4. + * include/link.h (struct dl_phdr_info): New definition. + (dl_iterate_phdr, __dl_iterate_phdr): New prototypes. + * sysdeps/generic/dl-iteratephdr-static.c: New file. + * sysdeps/unix/sysv/linux/ia64/dl-iteratephdr-static.c: New file. + 2001-07-24 Igor Khavkine <i_khavki@alcor.concordia.ca> - * hurd/hurdsig.c (_hurdsig_init): Fix incorrect initialization - of pending signals. + * hurd/hurdsig.c (_hurdsig_init): Fix incorrect initialization + of pending signals. 2001-06-22 Jakub Jelinek <jakub@redhat.com> diff --git a/elf/Versions b/elf/Versions index b72cedbcef..2506d100a6 100644 --- a/elf/Versions +++ b/elf/Versions @@ -14,6 +14,9 @@ libc { # functions used in other libraries _dl_sym; _dl_vsym; } + GLIBC_2.2.4 { + dl_iterate_phdr; + } } ld { diff --git a/elf/dl-iteratephdr.c b/elf/dl-iteratephdr.c new file mode 100644 index 0000000000..fa62dc760e --- /dev/null +++ b/elf/dl-iteratephdr.c @@ -0,0 +1,61 @@ +/* Get loaded objects program headers. + Copyright (C) 2001 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Jakub Jelinek <jakub@redhat.com>, 2001. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <errno.h> +#include <ldsodefs.h> +#include <stddef.h> +#include <bits/libc-lock.h> + +__libc_lock_define (extern, _dl_load_lock) + +int +__dl_iterate_phdr (int (*callback) (struct dl_phdr_info *info, + size_t size, void *data), void *data) +{ + struct link_map *l; + struct dl_phdr_info info; + int ret = 0; + + /* Make sure we are alone. */ + __libc_lock_lock (_dl_load_lock); + + for (l = _dl_loaded; l != NULL; l = l->l_next) + { + /* Skip the dynamic linker. */ + if (l->l_phdr == NULL) + continue; + info.dlpi_addr = l->l_addr; + info.dlpi_name = l->l_name; + info.dlpi_phdr = l->l_phdr; + info.dlpi_phnum = l->l_phnum; + ret = callback (&info, sizeof (struct dl_phdr_info), data); + if (ret) + break; + } + + /* Release the lock. */ + __libc_lock_unlock (_dl_load_lock); + + return ret; +} + +#ifdef SHARED +weak_alias (__dl_iterate_phdr, dl_iterate_phdr); +#endif diff --git a/elf/link.h b/elf/link.h index 1aa0a3e597..f8e7f629d0 100644 --- a/elf/link.h +++ b/elf/link.h @@ -1,6 +1,6 @@ /* Data structure for communication from the run-time dynamic linker for loaded ELF shared objects. - Copyright (C) 1995-1999, 2000 Free Software Foundation, Inc. + Copyright (C) 1995-1999, 2000, 2001 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -92,4 +92,24 @@ struct link_map struct link_map *l_next, *l_prev; /* Chain of loaded objects. */ }; +#ifdef __USE_GNU + +struct dl_phdr_info + { + ElfW(Addr) dlpi_addr; + const char *dlpi_name; + const ElfW(Phdr) *dlpi_phdr; + ElfW(Half) dlpi_phnum; + }; + +__BEGIN_DECLS + +extern int dl_iterate_phdr (int (*callback) (struct dl_phdr_info *info, + size_t size, void *data), + void *data) __THROW; + +__END_DECLS + +#endif + #endif /* link.h */ diff --git a/include/link.h b/include/link.h index 259866a057..1964b6bad3 100644 --- a/include/link.h +++ b/include/link.h @@ -230,4 +230,19 @@ struct link_map unsigned int l_idx; }; +struct dl_phdr_info + { + ElfW(Addr) dlpi_addr; + const char *dlpi_name; + const ElfW(Phdr) *dlpi_phdr; + ElfW(Half) dlpi_phnum; + }; + +extern int dl_iterate_phdr (int (*callback) (struct dl_phdr_info *info, + size_t size, void *data), + void *data); +extern int __dl_iterate_phdr (int (*callback) (struct dl_phdr_info *info, + size_t size, void *data), + void *data); + #endif /* link.h */ diff --git a/sysdeps/generic/dl-iteratephdr-static.c b/sysdeps/generic/dl-iteratephdr-static.c new file mode 100644 index 0000000000..8483b483c2 --- /dev/null +++ b/sysdeps/generic/dl-iteratephdr-static.c @@ -0,0 +1,31 @@ +/* Get static program's program headers. + Copyright (C) 2001 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Jakub Jelinek <jakub@redhat.com>, 2001. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <errno.h> +#include <elf/link.h> +#include <stddef.h> + +int +dl_iterate_phdr (int (*callback) (struct dl_phdr_info *info, + size_t size, void *data), void *data) +{ + __set_errno (ENOSYS); + return -1; +} diff --git a/sysdeps/unix/sysv/linux/ia64/dl-iteratephdr-static.c b/sysdeps/unix/sysv/linux/ia64/dl-iteratephdr-static.c new file mode 100644 index 0000000000..af646233aa --- /dev/null +++ b/sysdeps/unix/sysv/linux/ia64/dl-iteratephdr-static.c @@ -0,0 +1,61 @@ +/* Get static program's program headers. IA-64 version. + Copyright (C) 2001 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Jakub Jelinek <jakub@redhat.com>, 2001. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <assert.h> +#include <errno.h> +#include <link.h> +#include <stddef.h> + +extern unsigned long ip_segrel; + +asm (".section .rodata; ip_segrel: data8 @segrel(ip#); .previous"); + +int +dl_iterate_phdr (int (*callback) (struct dl_phdr_info *info, + size_t size, void *data), void *data) +{ + char *ip; + ElfW(Ehdr) *ehdr; + struct dl_phdr_info info; + int ret; + + asm ("ip: mov %0 = ip" : "=r" (ip)); + ehdr = (ElfW(Ehdr) *) (ip - ip_segrel); + + assert (ehdr->e_ident[0] == 0x7f + && ehdr->e_ident[1] == 'E' + && ehdr->e_ident[2] == 'L' + && ehdr->e_ident[3] == 'F' + && ehdr->e_ident[EI_CLASS] == ELFCLASS64 + && ehdr->e_ident[EI_DATA] == ELFDATA2LSB + && ehdr->e_machine == EM_IA_64 + && ehdr->e_type == ET_EXEC); + + info.dlpi_addr = 0; + info.dlpi_name = NULL; + info.dlpi_phdr = (ElfW(Phdr) *) ((char *) ehdr + ehdr->e_phoff); + info.dlpi_phnum = ehdr->e_phnum; + + ret = callback (&info, sizeof (struct dl_phdr_info), data); + if (ret) + return ret; + + return __dl_iterate_phdr (callback, data); +} |