diff options
Diffstat (limited to 'libc/misc/internals/__uClibc_main.c')
| -rw-r--r-- | libc/misc/internals/__uClibc_main.c | 28 |
1 files changed, 25 insertions, 3 deletions
diff --git a/libc/misc/internals/__uClibc_main.c b/libc/misc/internals/__uClibc_main.c index 73abcfa77..79b71cb3c 100644 --- a/libc/misc/internals/__uClibc_main.c +++ b/libc/misc/internals/__uClibc_main.c @@ -1,6 +1,6 @@ /* * Manuel Novoa III Feb 2001 - * Erik Andersen Mar 2002 + * Erik Andersen 2002-2004 * * __uClibc_main is the routine to be called by all the arch-specific * versions of crt0.S in uClibc. @@ -15,6 +15,8 @@ #include <features.h> #include <unistd.h> #include <stdlib.h> +#include <string.h> +#include <elf.h> #ifdef __UCLIBC_PROPOLICE__ extern void __guard_setup(void); #endif @@ -44,6 +46,9 @@ extern void weak_function __pthread_initialize_minimal(void); * environ symbol is also included. */ +extern int _dl_secure; +extern size_t _dl_pagesize; + char **__environ = 0; const char *__progname = 0; weak_alias(__environ, environ); @@ -116,6 +121,23 @@ void __attribute__ ((__noreturn__)) __uClibc_start_main(int argc, char **argv, char **envp, void (*app_init)(void), void (*app_fini)(void)) { + unsigned long *aux_dat; + Elf32_auxv_t auxvt[AT_EGID + 1]; + + /* Pull stuff from the ELF header when possible */ + aux_dat = (unsigned long*)envp; + while (*aux_dat) { + aux_dat++; + } + aux_dat++; + while (*aux_dat) { + Elf32_auxv_t *auxv_entry = (Elf32_auxv_t *) aux_dat; + if (auxv_entry->a_type <= AT_EGID) { + memcpy(&(auxvt[auxv_entry->a_type]), auxv_entry, sizeof(Elf32_auxv_t)); + } + aux_dat += 2; + } + _dl_pagesize = (auxvt[AT_PAGESZ].a_un.a_val)? auxvt[AT_PAGESZ].a_un.a_val : 4096; /* If we are dynamically linked the shared lib loader already * did this for us. But if we are statically linked, we need @@ -134,7 +156,7 @@ __uClibc_start_main(int argc, char **argv, char **envp, #ifdef __UCLIBC_CTOR_DTOR__ /* Arrange for the application's dtors to run before we exit. */ - __app_fini = app_fini; + __app_fini = app_fini; /* Run all the application's ctors now. */ if (app_init!=NULL) { @@ -143,7 +165,7 @@ __uClibc_start_main(int argc, char **argv, char **envp, #endif #ifdef __UCLIBC_PROPOLICE__ - __guard_setup (); + __guard_setup (); #endif /* Note: It is possible that any initialization done above could |