diff options
Diffstat (limited to 'elf/rtld.c')
| -rw-r--r-- | elf/rtld.c | 149 |
1 files changed, 75 insertions, 74 deletions
@@ -18,6 +18,7 @@ 02111-1307 USA. */ #include <fcntl.h> +#include <stdbool.h> #include <stdlib.h> #include <string.h> #include <unistd.h> @@ -464,10 +465,10 @@ dl_main (const ElfW(Phdr) *phdr, unsigned int npreloads; size_t file_size; char *file; - int has_interp = 0; + bool has_interp = false; unsigned int i; - int prelinked = 0; - int rtld_is_main = 0; + bool prelinked = false; + bool rtld_is_main = false; #ifndef HP_TIMING_NONAVAIL hp_timing_t start; hp_timing_t stop; @@ -497,7 +498,7 @@ dl_main (const ElfW(Phdr) *phdr, pay attention to its PT_INTERP command (we are the interpreter ourselves). This is an easy way to test a new ld.so before installing it. */ - rtld_is_main = 1; + rtld_is_main = true; /* Note the place where the dynamic linker actually came from. */ GL(dl_rtld_map).l_name = _dl_argv[0]; @@ -689,7 +690,7 @@ of this helper program; chances are you did not intend to run this program.\n\ } } - has_interp = 1; + has_interp = true; break; case PT_LOAD: { @@ -1210,7 +1211,7 @@ of this helper program; chances are you did not intend to run this program.\n\ if (r_list == r_listend && liblist == liblistend) - prelinked = 1; + prelinked = true; if (__builtin_expect (GL(dl_debug_mask) & DL_DEBUG_LIBS, 0)) _dl_printf ("\nprelink checking: %s\n", prelinked ? "ok" : "failed"); @@ -1241,83 +1242,83 @@ of this helper program; chances are you did not intend to run this program.\n\ _dl_sysdep_start_cleanup (); } else - { - /* Now we have all the objects loaded. Relocate them all except for - the dynamic linker itself. We do this in reverse order so that copy - relocs of earlier objects overwrite the data written by later - objects. We do not re-relocate the dynamic linker itself in this - loop because that could result in the GOT entries for functions we - call being changed, and that would break us. It is safe to relocate - the dynamic linker out of order because it has no copy relocs (we - know that because it is self-contained). */ + { + /* Now we have all the objects loaded. Relocate them all except for + the dynamic linker itself. We do this in reverse order so that copy + relocs of earlier objects overwrite the data written by later + objects. We do not re-relocate the dynamic linker itself in this + loop because that could result in the GOT entries for functions we + call being changed, and that would break us. It is safe to relocate + the dynamic linker out of order because it has no copy relocs (we + know that because it is self-contained). */ - struct link_map *l; - int consider_profiling = GL(dl_profile) != NULL; + struct link_map *l; + int consider_profiling = GL(dl_profile) != NULL; #ifndef HP_TIMING_NONAVAIL - hp_timing_t start; - hp_timing_t stop; - hp_timing_t add; + hp_timing_t start; + hp_timing_t stop; + hp_timing_t add; #endif - /* If we are profiling we also must do lazy reloaction. */ - GL(dl_lazy) |= consider_profiling; + /* If we are profiling we also must do lazy reloaction. */ + GL(dl_lazy) |= consider_profiling; - l = GL(dl_loaded); - while (l->l_next) - l = l->l_next; + l = GL(dl_loaded); + while (l->l_next) + l = l->l_next; - HP_TIMING_NOW (start); - do - { - /* While we are at it, help the memory handling a bit. We have to - mark some data structures as allocated with the fake malloc() - implementation in ld.so. */ - struct libname_list *lnp = l->l_libname->next; + HP_TIMING_NOW (start); + do + { + /* While we are at it, help the memory handling a bit. We have to + mark some data structures as allocated with the fake malloc() + implementation in ld.so. */ + struct libname_list *lnp = l->l_libname->next; - while (__builtin_expect (lnp != NULL, 0)) - { - lnp->dont_free = 1; - lnp = lnp->next; - } + while (__builtin_expect (lnp != NULL, 0)) + { + lnp->dont_free = 1; + lnp = lnp->next; + } - if (l != &GL(dl_rtld_map)) - INT(_dl_relocate_object) (l, l->l_scope, GL(dl_lazy), - consider_profiling); + if (l != &GL(dl_rtld_map)) + INT(_dl_relocate_object) (l, l->l_scope, GL(dl_lazy), + consider_profiling); - l = l->l_prev; - } - while (l); - HP_TIMING_NOW (stop); - - HP_TIMING_DIFF (relocate_time, start, stop); - - /* Do any necessary cleanups for the startup OS interface code. - We do these now so that no calls are made after rtld re-relocation - which might be resolved to different functions than we expect. - We cannot do this before relocating the other objects because - _dl_relocate_object might need to call `mprotect' for DT_TEXTREL. */ - _dl_sysdep_start_cleanup (); - - /* Now enable profiling if needed. Like the previous call, - this has to go here because the calls it makes should use the - rtld versions of the functions (particularly calloc()), but it - needs to have _dl_profile_map set up by the relocator. */ - if (__builtin_expect (GL(dl_profile_map) != NULL, 0)) - /* We must prepare the profiling. */ - INT(_dl_start_profile) (GL(dl_profile_map), GL(dl_profile_output)); - - if (GL(dl_rtld_map).l_opencount > 1) - { - /* There was an explicit ref to the dynamic linker as a shared lib. - Re-relocate ourselves with user-controlled symbol definitions. */ - HP_TIMING_NOW (start); - INT(_dl_relocate_object) (&GL(dl_rtld_map), GL(dl_loaded)->l_scope, - 0, 0); - HP_TIMING_NOW (stop); - HP_TIMING_DIFF (add, start, stop); - HP_TIMING_ACCUM_NT (relocate_time, add); - } - } + l = l->l_prev; + } + while (l); + HP_TIMING_NOW (stop); + + HP_TIMING_DIFF (relocate_time, start, stop); + + /* Do any necessary cleanups for the startup OS interface code. + We do these now so that no calls are made after rtld re-relocation + which might be resolved to different functions than we expect. + We cannot do this before relocating the other objects because + _dl_relocate_object might need to call `mprotect' for DT_TEXTREL. */ + _dl_sysdep_start_cleanup (); + + /* Now enable profiling if needed. Like the previous call, + this has to go here because the calls it makes should use the + rtld versions of the functions (particularly calloc()), but it + needs to have _dl_profile_map set up by the relocator. */ + if (__builtin_expect (GL(dl_profile_map) != NULL, 0)) + /* We must prepare the profiling. */ + INT(_dl_start_profile) (GL(dl_profile_map), GL(dl_profile_output)); + + if (GL(dl_rtld_map).l_opencount > 1) + { + /* There was an explicit ref to the dynamic linker as a shared lib. + Re-relocate ourselves with user-controlled symbol definitions. */ + HP_TIMING_NOW (start); + INT(_dl_relocate_object) (&GL(dl_rtld_map), GL(dl_loaded)->l_scope, + 0, 0); + HP_TIMING_NOW (stop); + HP_TIMING_DIFF (add, start, stop); + HP_TIMING_ACCUM_NT (relocate_time, add); + } + } /* Now set up the variable which helps the assembler startup code. */ GL(dl_main_searchlist) = &GL(dl_loaded)->l_searchlist; |