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| author | Ulrich Drepper <drepper@redhat.com> | 2005-06-26 18:14:26 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2005-06-26 18:14:26 +0000 |
| commit | 35f1e82763326f196fd068e92343643d8ed54ee3 (patch) | |
| tree | 74c6d155ca2e7c32503231b8ce186a0752bc924b /sysdeps/generic/libc-start.c | |
| parent | 2f37117b013f77df863b198c3408555c49596174 (diff) | |
| download | glibc-35f1e82763326f196fd068e92343643d8ed54ee3.tar.gz glibc-35f1e82763326f196fd068e92343643d8ed54ee3.tar.xz glibc-35f1e82763326f196fd068e92343643d8ed54ee3.zip | |
* Versions.def (ld): Add GLIBC_2.4.
* configure.in: Add --enable-stackguard-randomization option.
(ENABLE_STACKGUARD_RANDOMIZE): New define.
* config.h.in (ENABLE_STACKGUARD_RANDOMIZE): Add.
* sysdeps/unix/sysv/linux/dl-osinfo.h: Include stdint.h.
(_dl_setup_stack_chk_guard): New inline function.
* sysdeps/generic/dl-osinfo.h: Include stdint.h.
(_dl_setup_stack_chk_guard): New inline function.
* elf/rtld.c (__stack_chk_guard): New variable.
(dl_main): Remove all traces of TLS_INIT_TP_EXPENSIVE.
Set __stack_chk_guard to _dl_setup_stack_chk_guard (),
use THREAD_SET_STACK_GUARD if defined.
* elf/Versions (ld): Export __stack_chk_guard@@GLIBC_2.4.
* sysdeps/generic/libc-start.c (__stack_chk_guard): New variable.
(__libc_start_main): Set __stack_chk_guard to
_dl_setup_stack_chk_guard (), use THREAD_SET_STACK_GUARD if defined.
* sysdeps/generic/libc-tls.c (__libc_setup_tls): Remove all
traces of TLS_INIT_TP_EXPENSIVE.
* debug/Versions (libc): Export __stack_chk_fail@@GLIBC_2.4.
* debug/Makefile (routines): Add stack_chk_fail.
(static-only-routines): Add stack_chk_fail_local.
* debug/stack_chk_fail_local.c: New file.
* debug/stack_chk_fail.c: New file.
* elf/Makefile: Add rules to build and run tst-stackguard1{,-static}
tests.
* elf/tst-stackguard1.c: New file.
* elf/tst-stackguard1-static.c: New file.
* elf/stackguard-macros.h: New file.
Diffstat (limited to 'sysdeps/generic/libc-start.c')
| -rw-r--r-- | sysdeps/generic/libc-start.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/sysdeps/generic/libc-start.c b/sysdeps/generic/libc-start.c index f0d69b443b..3fcadcf19f 100644 --- a/sysdeps/generic/libc-start.c +++ b/sysdeps/generic/libc-start.c @@ -35,6 +35,11 @@ extern void __pthread_initialize_minimal (void) __attribute__ ((weak)) # endif ; +# ifndef THREAD_SET_STACK_GUARD +/* Only exported for architectures that don't store the stack guard canary + in thread local area. */ +uintptr_t __stack_chk_guard attribute_relro; +# endif #endif #ifdef HAVE_PTR_NTHREADS @@ -152,6 +157,16 @@ LIBC_START_MAIN (int (*main) (int, char **, char ** MAIN_AUXVEC_DECL), __pthread_initialize_minimal (); #endif +# ifndef SHARED + /* Set up the stack checker's canary. */ + uintptr_t stack_chk_guard = _dl_setup_stack_chk_guard (); +# ifdef THREAD_SET_STACK_GUARD + THREAD_SET_STACK_GUARD (stack_chk_guard); +# else + __stack_chk_guard = stack_chk_guard; +# endif +#endif + /* Register the destructor of the dynamic linker if there is any. */ if (__builtin_expect (rtld_fini != NULL, 1)) __cxa_atexit ((void (*) (void *)) rtld_fini, NULL, NULL); |