06b31ad3ef
* Makeconfig (CPPFLAGS-.oS): Add -DLIBC_NONSHARED=1. * csu/elf-init.c: New file. * csu/Makefile (routines, static-only-routines): Add elf-init. * sysdeps/alpha/elf/start.S: Use __libc_csu_init in place of _init and __libc_csu_fini in place of _fini. * sysdeps/arm/elf/start.S: Likewise. * sysdeps/cris/elf/start.S: Likewise. * sysdeps/hppa/elf/start.S: Likewise. * sysdeps/i386/elf/start.S: Likewise. * sysdeps/ia64/elf/start.S: Likewise. * sysdeps/m68k/elf/start.S: Likewise. * sysdeps/mach/hurd/powerpc/static-start.S: Likewise. * sysdeps/mips/elf/start.S: Likewise. * sysdeps/powerpc/powerpc32/elf/start.S: Likewise. * sysdeps/powerpc/powerpc64/elf/start.S: Likewise. * sysdeps/s390/s390-32/elf/start.S: Likewise. * sysdeps/s390/s390-64/elf/start.S: Likewise. * sysdeps/sh/elf/start.S: Likewise. * sysdeps/sparc/sparc32/elf/start.S: Likewise. * sysdeps/sparc/sparc64/elf/start.S: Likewise. * sysdeps/x86_64/elf/start.S: Likewise.
83 lines
2.6 KiB
C
83 lines
2.6 KiB
C
/* Startup support for ELF initializers/finalizers in the main executable.
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Copyright (C) 2002 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 <stddef.h>
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#ifdef HAVE_INITFINI_ARRAY
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/* These magic symbols are provided by the linker. */
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extern void (*__preinit_array_start []) (void);
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extern void (*__preinit_array_end []) (void);
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extern void (*__init_array_start []) (void);
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extern void (*__init_array_end []) (void);
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extern void (*__fini_array_start []) (void);
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extern void (*__fini_array_end []) (void);
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#endif
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/* These function symbols are provided for the .init/.fini section entry
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points automagically by the linker. */
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extern void _init (void);
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extern void _fini (void);
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/* These functions are passed to __libc_start_main by the startup code.
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These get statically linked into each program. For dynamically linked
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programs, this module will come from libc_nonshared.a and differs from
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the libc.a module in that it doesn't call the preinit array. */
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void
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__libc_csu_init (void)
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{
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#ifdef HAVE_INITFINI_ARRAY
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/* For dynamically linked executables the preinit array is executed by
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the dynamic linker (before initializing any shared object. */
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# ifndef LIBC_NONSHARED
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/* For static executables, preinit happens rights before init. */
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{
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const size_t size = __preinit_array_end - __preinit_array_start;
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size_t i;
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for (i = 0; i < size; i++)
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(*__preinit_array_start [i]) ();
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}
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# endif
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#endif
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_init ();
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#ifdef HAVE_INITFINI_ARRAY
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{
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const size_t size = __init_array_end - __init_array_start;
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size_t i;
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for (i = 0; i < size; i++)
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(*__init_array_start [i]) ();
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}
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#endif
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}
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void
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__libc_csu_fini (void)
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{
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#ifdef HAVE_INITFINI_ARRAY
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size_t i = __fini_array_end - __fini_array_start;
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while (i-- > 0)
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(*__fini_array_start [i]) ();
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#endif
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_fini ();
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}
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