4d8917523f
* sysdeps/x86_64/elf/initfini.c (__asm__): Call call_gmon_start. 2002-07-08 Andreas Jaeger <aj@suse.de>
101 lines
2.7 KiB
C
101 lines
2.7 KiB
C
/* Special .init and .fini section support for x86-64.
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Copyright (C) 2001, 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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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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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\
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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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.align 4\n\
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.type call_gmon_start,@function\n\
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call_gmon_start:\n\
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subq $8, %rsp\n\
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movq __gmon_start__@GOTPCREL(%rip), %rax\n\
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testq %rax, %rax\n\
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je .L22\n\
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call *%rax\n\
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.L22:\n\
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addq $8, %rsp\n\
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ret\n\
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\n\
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.section .init\n\
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.align 4\n\
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.globl _init\n\
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.type _init,@function\n\
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_init:\n\
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subq $8, %rsp\n\
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call call_gmon_start\n\
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ALIGN\n\
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END_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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addq $8, %rsp\n\
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ret\n\
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END_INIT\n\
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\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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.align 4\n\
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.globl _fini\n\
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.type _fini,@function\n\
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_fini:\n\
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subq $8, %rsp\n\
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ALIGN\n\
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END_FINI\n\
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\n\
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/*@_fini_PROLOG_ENDS*/\n\
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call i_am_not_a_leaf@PLT\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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addq $8, %rsp\n\
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ret\n\
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END_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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.weak __gmon_start__\n\
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");
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