mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-27 13:10:29 +00:00
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.
|
|
Copyright (C) 2001, 2002 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
In addition to the permissions in the GNU Lesser General Public
|
|
License, the Free Software Foundation gives you unlimited
|
|
permission to link the compiled version of this file with other
|
|
programs, and to distribute those programs without any restriction
|
|
coming from the use of this file. (The GNU Lesser General Public
|
|
License restrictions do apply in other respects; for example, they
|
|
cover modification of the file, and distribution when not linked
|
|
into another program.)
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
/* This file is compiled into assembly code which is then munged by a sed
|
|
script into two files: crti.s and crtn.s.
|
|
|
|
* crti.s puts a function prologue at the beginning of the
|
|
.init and .fini sections and defines global symbols for
|
|
those addresses, so they can be called as functions.
|
|
|
|
* crtn.s puts the corresponding function epilogues
|
|
in the .init and .fini sections. */
|
|
|
|
__asm__ ("\n\
|
|
#include \"defs.h\"\n\
|
|
\n\
|
|
/*@HEADER_ENDS*/\n\
|
|
\n\
|
|
/*@_init_PROLOG_BEGINS*/\n\
|
|
.align 4\n\
|
|
.type call_gmon_start,@function\n\
|
|
call_gmon_start:\n\
|
|
subq $8, %rsp\n\
|
|
movq __gmon_start__@GOTPCREL(%rip), %rax\n\
|
|
testq %rax, %rax\n\
|
|
je .L22\n\
|
|
call *%rax\n\
|
|
.L22:\n\
|
|
addq $8, %rsp\n\
|
|
ret\n\
|
|
\n\
|
|
.section .init\n\
|
|
.align 4\n\
|
|
.globl _init\n\
|
|
.type _init,@function\n\
|
|
_init:\n\
|
|
subq $8, %rsp\n\
|
|
call call_gmon_start\n\
|
|
ALIGN\n\
|
|
END_INIT\n\
|
|
\n\
|
|
/*@_init_PROLOG_ENDS*/\n\
|
|
\n\
|
|
/*@_init_EPILOG_BEGINS*/\n\
|
|
.section .init\n\
|
|
addq $8, %rsp\n\
|
|
ret\n\
|
|
END_INIT\n\
|
|
\n\
|
|
/*@_init_EPILOG_ENDS*/\n\
|
|
\n\
|
|
/*@_fini_PROLOG_BEGINS*/\n\
|
|
.section .fini\n\
|
|
.align 4\n\
|
|
.globl _fini\n\
|
|
.type _fini,@function\n\
|
|
_fini:\n\
|
|
subq $8, %rsp\n\
|
|
ALIGN\n\
|
|
END_FINI\n\
|
|
\n\
|
|
/*@_fini_PROLOG_ENDS*/\n\
|
|
call i_am_not_a_leaf@PLT\n\
|
|
\n\
|
|
/*@_fini_EPILOG_BEGINS*/\n\
|
|
.section .fini\n\
|
|
addq $8, %rsp\n\
|
|
ret\n\
|
|
END_FINI\n\
|
|
\n\
|
|
/*@_fini_EPILOG_ENDS*/\n\
|
|
\n\
|
|
/*@TRAILER_BEGINS*/\n\
|
|
.weak __gmon_start__\n\
|
|
");
|