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124dcac84b
(LIBC_START_MAIN, LIBC_START_MAIN_AUXVEC_ARG, MAIN_AUXVEC_ARG) (INIT_MAIN_ARGS): Define, and #include <sysdeps/generic/libc-start.c>. (__libc_start_main): Just call the generic one for most of the work. * sysdeps/generic/libc-start.c [LIBC_START_MAIN]: If defined, define a static function by that name instead of BP_SYM (__libc_start_main). [LIBC_START_MAIN_AUXVEC_ARG]: Take AUXVEC as argument. [MAIN_AUXVEC_ARG]: Pass 4th argument to MAIN. [INIT_MAIN_ARGS]: Give INIT the same args as MAIN. * sysdeps/generic/dl-sysdep.c (_dl_sysdep_start) [DL_PLATFORM_AUXV]: Use this macro for extra AT_* cases. * sysdeps/unix/sysv/linux/powerpc/dl-sysdep.c (DL_PLATFORM_AUXV): New macro, guts from ... (__aux_init_cache): ... here, function removed. (DL_PLATFORM_INIT): Don't define this. * sysdeps/powerpc/powerpc32/memset.S: Put __cache_line_size in bss. * sysdeps/powerpc/powerpc64/memset.S: Likewise. * Versions.def (libthread_db): Add GLICB_2.3.3 set.
112 lines
3.5 KiB
C
112 lines
3.5 KiB
C
/* Copyright (C) 1998,2000,2001,2002,2003 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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extern int __cache_line_size;
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weak_extern (__cache_line_size)
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/* Scan the Aux Vector for the "Data Cache Block Size" entry. If found
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verify that the static extern __cache_line_size is defined by checking
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for not NULL. If it is defined then assign the cache block size
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value to __cache_line_size. */
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static inline void
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__aux_init_cache (ElfW(auxv_t) *av)
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{
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for (; 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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{
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int *cls = & __cache_line_size;
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if (cls != NULL)
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*cls = av->a_un.a_val;
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}
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break;
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}
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}
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/* This is used in sysdeps/generic/libc-start.c. */
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#define AUX_VECTOR_INIT __aux_init_cache
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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_MAIN_AUXVEC_ARG
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#define MAIN_AUXVEC_ARG
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#define INIT_MAIN_ARGS
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#include <sysdeps/generic/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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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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__aux_init_cache (auxvec);
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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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