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#include <elf.h> #include "libc.h" void __init_tls(size_t *); void __init_security(size_t *); void __init_ldso_ctors(void); #define AUX_CNT 38 extern size_t __hwcap, __sysinfo; void __init_libc(char **envp) { size_t i, *auxv, aux[AUX_CNT] = { 0 }; __environ = envp; for (i=0; envp[i]; i++); libc.auxv = auxv = (void *)(envp+i+1); for (i=0; auxv[i]; i+=2) if (auxv[i]<AUX_CNT) aux[auxv[i]] = auxv[i+1]; __hwcap = aux[AT_HWCAP]; __sysinfo = aux[AT_SYSINFO]; __init_tls(aux); __init_security(aux); } int __libc_start_main( int (*main)(int, char **, char **), int argc, char **argv, int (*init)(int, char **, char **), void (*fini)(void), void (*ldso_fini)(void)) { char **envp = argv+argc+1; __init_libc(envp); libc.ldso_fini = ldso_fini; libc.fini = fini; /* Execute constructors (static) linked into the application */ if (init) init(argc, argv, envp); #ifdef SHARED __init_ldso_ctors(); #endif /* Pass control to to application */ exit(main(argc, argv, envp)); return 0; } |