diff options
Diffstat (limited to 'elf')
| -rw-r--r-- | elf/Makefile | 2 | ||||
| -rw-r--r-- | elf/dl-misc.c | 122 | ||||
| -rw-r--r-- | elf/dl-reloc.c | 4 | ||||
| -rw-r--r-- | elf/dl-support.c | 52 | ||||
| -rw-r--r-- | elf/dynamic-link.h | 9 | ||||
| -rw-r--r-- | elf/rtld.c | 2 |
6 files changed, 129 insertions, 62 deletions
diff --git a/elf/Makefile b/elf/Makefile index 8d644aac8b..ae7dda9638 100644 --- a/elf/Makefile +++ b/elf/Makefile @@ -27,7 +27,7 @@ routines = $(dl-routines) dl-open dl-close dl-symbol dl-support \ # The core dynamic linking functions are in libc for the static and # profiled libraries. dl-routines = $(addprefix dl-,load cache lookup object reloc deps \ - runtime error init fini debug sysdepio) + runtime error init fini debug misc) # But they are absent from the shared libc, because that code is in ld.so. elide-routines.so = $(dl-routines) dl-support enbl-secure diff --git a/elf/dl-misc.c b/elf/dl-misc.c new file mode 100644 index 0000000000..d5b1464a6b --- /dev/null +++ b/elf/dl-misc.c @@ -0,0 +1,122 @@ +/* Miscellaneous support functions for dynamic linker + Copyright (C) 1997 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 + 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 <fcntl.h> +#include <unistd.h> +#include <stdarg.h> +#include <string.h> +#include <sys/mman.h> +#include <sys/stat.h> + +#ifndef MAP_ANON +/* This is the only dl-sysdep.c function that is actually needed at run-time + by _dl_map_object. */ + +int +_dl_sysdep_open_zero_fill (void) +{ + return __open ("/dev/zero", O_RDONLY); +} +#endif + +/* Read the whole contents of FILE into new mmap'd space with given + protections. *SIZEP gets the size of the file. */ + +void * +_dl_sysdep_read_whole_file (const char *file, size_t *sizep, int prot) +{ + void *result; + struct stat st; + int fd = __open (file, O_RDONLY); + if (fd < 0) + return NULL; + if (__fxstat (_STAT_VER, fd, &st) < 0) + result = NULL; + else + { + /* Map a copy of the file contents. */ + result = __mmap (0, st.st_size, prot, +#ifdef MAP_COPY + MAP_COPY +#else + MAP_PRIVATE +#endif +#ifdef MAP_FILE + | MAP_FILE +#endif + , fd, 0); + if (result == (void *) -1) + result = NULL; + else + *sizep = st.st_size; + } + __close (fd); + return result; +} + + +void +_dl_sysdep_fatal (const char *msg, ...) +{ + va_list ap; + + va_start (ap, msg); + do + { + size_t len = strlen (msg); + __write (STDERR_FILENO, msg, len); + msg = va_arg (ap, const char *); + } while (msg); + va_end (ap); + + _exit (127); +} + + +void +_dl_sysdep_error (const char *msg, ...) +{ + va_list ap; + + va_start (ap, msg); + do + { + size_t len = strlen (msg); + __write (STDERR_FILENO, msg, len); + msg = va_arg (ap, const char *); + } while (msg); + va_end (ap); +} + + +void +_dl_sysdep_message (const char *msg, ...) +{ + va_list ap; + + va_start (ap, msg); + do + { + size_t len = strlen (msg); + __write (STDOUT_FILENO, msg, len); + msg = va_arg (ap, const char *); + } while (msg); + va_end (ap); +} diff --git a/elf/dl-reloc.c b/elf/dl-reloc.c index f1c43ea174..bec5881d0e 100644 --- a/elf/dl-reloc.c +++ b/elf/dl-reloc.c @@ -68,10 +68,6 @@ _dl_relocate_object (struct link_map *l, struct link_map *scope[], int lazy) ELF_DYNAMIC_RELOCATE (l, lazy); } - /* Set up the PLT so its unrelocated entries will jump to - _dl_runtime_resolve (dl-runtime.c), which will relocate them. */ - elf_machine_runtime_setup (l, lazy); - /* Mark the object so we know ths work has been done. */ l->l_relocated = 1; diff --git a/elf/dl-support.c b/elf/dl-support.c index 8a52fc7790..e59b84727e 100644 --- a/elf/dl-support.c +++ b/elf/dl-support.c @@ -17,12 +17,6 @@ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ -#include <assert.h> -#include <fcntl.h> -#include <unistd.h> -#include <sys/mman.h> -#include <sys/stat.h> - /* This file defines some things that for the dynamic linker are defined in rtld.c and dl-sysdep.c in ways appropriate to bootstrap dynamic linking. */ @@ -32,49 +26,3 @@ char **_dl_argv = &__progname; /* This is checked for some error messages. */ /* This defines the default search path for libraries. For the dynamic linker it is set by -rpath when linking. */ const char *_dl_rpath = DEFAULT_RPATH; - -#ifndef MAP_ANON -/* This is the only dl-sysdep.c function that is actually needed at run-time - by _dl_map_object. */ - -int -_dl_sysdep_open_zero_fill (void) -{ - return __open ("/dev/zero", O_RDONLY); -} -#endif - -/* Read the whole contents of FILE into new mmap'd space with given - protections. *SIZEP gets the size of the file. */ - -void * -_dl_sysdep_read_whole_file (const char *file, size_t *sizep, int prot) -{ - void *result; - struct stat st; - int fd = __open (file, O_RDONLY); - if (fd < 0) - return NULL; - if (__fxstat (_STAT_VER, fd, &st) < 0) - result = NULL; - else - { - /* Map a copy of the file contents. */ - result = __mmap (0, st.st_size, prot, -#ifdef MAP_COPY - MAP_COPY -#else - MAP_PRIVATE -#endif -#ifdef MAP_FILE - | MAP_FILE -#endif - , fd, 0); - if (result == (void *) -1) - result = NULL; - else - *sizep = st.st_size; - } - __close (fd); - return result; -} diff --git a/elf/dynamic-link.h b/elf/dynamic-link.h index 1d134ddf2f..da63633361 100644 --- a/elf/dynamic-link.h +++ b/elf/dynamic-link.h @@ -97,8 +97,11 @@ elf_get_dynamic_info (ElfW(Dyn) *dyn, /* This can't just be an inline function because GCC is too dumb to inline functions containing inlines themselves. */ -#define ELF_DYNAMIC_RELOCATE(map, lazy) \ - do { ELF_DYNAMIC_DO_REL ((map), (lazy)); \ - ELF_DYNAMIC_DO_RELA ((map), (lazy)); } while (0) +#define ELF_DYNAMIC_RELOCATE(map, lazy) \ + do { \ + int edr_lazy = elf_machine_runtime_setup((map), (lazy)); \ + ELF_DYNAMIC_DO_REL ((map), edr_lazy); \ + ELF_DYNAMIC_DO_RELA ((map), edr_lazy); \ + } while (0) #endif diff --git a/elf/rtld.c b/elf/rtld.c index 6f9737e060..bad01a8844 100644 --- a/elf/rtld.c +++ b/elf/rtld.c @@ -106,8 +106,6 @@ _dl_start (void *arg) ELF_DYNAMIC_RELOCATE (&bootstrap_map, 0); - elf_machine_runtime_setup (&bootstrap_map, 0); - /* Now life is sane; we can call functions and access global data. Set up to use the operating system facilities, and find out from the operating system's program loader where to find the program |