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127 lines
3.9 KiB
C
127 lines
3.9 KiB
C
/* Copyright (C) 1998, 2000, 2001, 2002, 2003, 2004, 2005, 2007
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Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <stdlib.h>
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#include <unistd.h>
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#include <ldsodefs.h>
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#include <bp-start.h>
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#include <bp-sym.h>
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int __cache_line_size attribute_hidden;
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/* The main work is done in the generic function. */
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#define LIBC_START_MAIN generic_start_main
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#define LIBC_START_DISABLE_INLINE
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#define LIBC_START_MAIN_AUXVEC_ARG
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#define MAIN_AUXVEC_ARG
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#define INIT_MAIN_ARGS
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#include <csu/libc-start.c>
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struct startup_info
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{
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void *__unbounded sda_base;
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int (*main) (int, char **, char **, void *);
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int (*init) (int, char **, char **, void *);
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void (*fini) (void);
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};
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#ifdef SHARED
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# include <sys/time.h>
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# include <dl-vdso.h>
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# undef __gettimeofday
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# undef __clock_gettime
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# undef __clock_getres
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# include <bits/libc-vdso.h>
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void *__vdso_gettimeofday;
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void *__vdso_clock_gettime;
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void *__vdso_clock_getres;
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void *__vdso_get_tbfreq;
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static inline void _libc_vdso_platform_setup (void)
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{
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__vdso_gettimeofday = _dl_vdso_vsym ("__kernel_gettimeofday",
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"LINUX_2.6.15");
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__vdso_clock_gettime = _dl_vdso_vsym ("__kernel_clock_gettime",
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"LINUX_2.6.15");
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__vdso_clock_getres = _dl_vdso_vsym ("__kernel_clock_getres",
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"LINUX_2.6.15");
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__vdso_get_tbfreq = _dl_vdso_vsym ("__kernel_vdso_get_tbfreq",
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"LINUX_2.6.15");
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}
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#endif
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int
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/* GKM FIXME: GCC: this should get __BP_ prefix by virtue of the
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BPs in the arglist of startup_info.main and startup_info.init. */
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BP_SYM (__libc_start_main) (int argc, char *__unbounded *__unbounded ubp_av,
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char *__unbounded *__unbounded ubp_ev,
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ElfW (auxv_t) * __unbounded auxvec,
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void (*rtld_fini) (void),
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struct startup_info *__unbounded stinfo,
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char *__unbounded *__unbounded stack_on_entry)
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{
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#if __BOUNDED_POINTERS__
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char **argv;
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#else
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# define argv ubp_av
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#endif
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/* the PPC SVR4 ABI says that the top thing on the stack will
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be a NULL pointer, so if not we assume that we're being called
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as a statically-linked program by Linux... */
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if (*stack_on_entry != NULL)
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{
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char *__unbounded * __unbounded temp;
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/* ...in which case, we have argc as the top thing on the
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stack, followed by argv (NULL-terminated), envp (likewise),
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and the auxilary vector. */
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/* 32/64-bit agnostic load from stack */
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argc = *(long int *__unbounded) stack_on_entry;
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ubp_av = stack_on_entry + 1;
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ubp_ev = ubp_av + argc + 1;
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#ifdef HAVE_AUX_VECTOR
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temp = ubp_ev;
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while (*temp != NULL)
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++temp;
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auxvec = (ElfW (auxv_t) *)++ temp;
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#endif
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rtld_fini = NULL;
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}
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/* Initialize the __cache_line_size variable from the aux vector. */
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for (ElfW (auxv_t) * av = auxvec; av->a_type != AT_NULL; ++av)
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switch (av->a_type)
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{
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case AT_DCACHEBSIZE:
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__cache_line_size = av->a_un.a_val;
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break;
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}
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#ifdef SHARED
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/* Resolve and initialize function pointers for VDSO functions. */
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_libc_vdso_platform_setup ();
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#endif
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return generic_start_main (stinfo->main, argc, ubp_av, auxvec,
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stinfo->init, stinfo->fini, rtld_fini,
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stack_on_entry);
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}
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