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ce33ee7caa
bail out. * config.h.in: Remove trace of optional init_array/fini_array support. * config.make.in: Likewise. * csu/elf-init.c: Likewise. * dlfcn/dlfcn.c: Likewise. * elf/soinit.c: Likewise. * sysdeps/ia64/elf/initfinit.c: Likewise.
153 lines
4.3 KiB
C
153 lines
4.3 KiB
C
/* Special .init and .fini section support for ia64.
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Copyright (C) 2000, 2002, 2003, 2005 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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In addition to the permissions in the GNU Lesser General Public
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License, the Free Software Foundation gives you unlimited
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permission to link the compiled version of this file with other
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programs, and to distribute those programs without any restriction
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coming from the use of this file. (The GNU Lesser General Public
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License restrictions do apply in other respects; for example, they
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cover modification of the file, and distribution when not linked
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into another program.)
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Note that people who make modified versions of this file are not
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obligated to grant this special exception for their modified
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versions; it is their choice whether to do so. The GNU Lesser
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General Public License gives permission to release a modified
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version without this exception; this exception also makes it
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possible to release a modified version which carries forward this
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exception.
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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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/* This file is compiled into assembly code which is then munged by a sed
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script into two files: crti.s and crtn.s.
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* crti.s puts a function prologue at the beginning of the
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.init and .fini sections and defines global symbols for
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those addresses, so they can be called as functions.
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* crtn.s puts the corresponding function epilogues
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in the .init and .fini sections. */
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__asm__ ("\n\n"
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"#include \"defs.h\"\n"
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"\n"
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"/*@HEADER_ENDS*/\n"
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"\n"
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"/*@_init_PROLOG_BEGINS*/\n");
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/* If we have working .init_array support, we want to keep the .init
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section empty (apart from the mandatory prologue/epilogue. This
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ensures that the default unwind conventions (return-pointer in b0,
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frame state in ar.pfs, etc.) will do the Right Thing. To ensure
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an empty .init section, we register gmon_initializer() via the
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.init_array.
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--davidm 02/10/29 */
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static void
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__attribute__ ((used))
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gmon_initializer (void)
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{
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extern void weak_function __gmon_start__ (void);
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if (__gmon_start__)
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(*__gmon_start__)();
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}
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__asm__ (".section .init_array, \"aw\"\n"
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"\tdata8 @fptr(gmon_initializer)\n");
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__asm__ (".section .init\n"
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" .global _init#\n"
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" .proc _init#\n"
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"_init:\n"
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" .prologue\n"
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" .save ar.pfs, r34\n"
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" alloc r34 = ar.pfs, 0, 3, 0, 0\n"
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" .vframe r32\n"
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" mov r32 = r12\n"
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" .save rp, r33\n"
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" mov r33 = b0\n"
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" .body\n"
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" adds r12 = -16, r12\n"
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" ;;\n" /* see gmon_initializer() above */
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" .endp _init#\n"
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"\n"
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"/*@_init_PROLOG_ENDS*/\n"
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"\n"
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"/*@_init_EPILOG_BEGINS*/\n"
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" .section .init\n"
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" .proc _init#\n"
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"_init:\n"
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" .prologue\n"
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" .save ar.pfs, r34\n"
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" .vframe r32\n"
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" .save rp, r33\n"
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" .body\n"
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" .regstk 0,2,0,0\n"
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" mov r12 = r32\n"
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" mov ar.pfs = r34\n"
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" mov b0 = r33\n"
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" br.ret.sptk.many b0\n"
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" .endp _init#\n"
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"/*@_init_EPILOG_ENDS*/\n"
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"\n"
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"/*@_fini_PROLOG_BEGINS*/\n"
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" .section .fini\n"
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" .global _fini#\n"
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" .proc _fini#\n"
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"_fini:\n"
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" .prologue\n"
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" .save ar.pfs, r34\n"
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" alloc r34 = ar.pfs, 0, 3, 0, 0\n"
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" .vframe r32\n"
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" mov r32 = r12\n"
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" .save rp, r33\n"
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" mov r33 = b0\n"
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" .body\n"
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" adds r12 = -16, r12\n"
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" ;;\n"
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" .endp _fini#\n"
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"\n"
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"/*@_fini_PROLOG_ENDS*/\n"
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" br.call.sptk.many b0 = i_am_not_a_leaf# ;;\n"
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" ;;\n"
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"\n"
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"/*@_fini_EPILOG_BEGINS*/\n"
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" .section .fini\n"
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" .proc _fini#\n"
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"_fini:\n"
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" .prologue\n"
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" .save ar.pfs, r34\n"
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" .vframe r32\n"
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" .save rp, r33\n"
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" .body\n"
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" mov r12 = r32\n"
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" mov ar.pfs = r34\n"
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" mov b0 = r33\n"
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" br.ret.sptk.many b0\n"
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" .endp _fini#\n"
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"\n"
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"/*@_fini_EPILOG_ENDS*/\n"
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"\n"
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"/*@TRAILER_BEGINS*/\n"
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);
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