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Diffstat (limited to 'csu/initfini.c')
| -rw-r--r-- | csu/initfini.c | 138 |
1 files changed, 0 insertions, 138 deletions
diff --git a/csu/initfini.c b/csu/initfini.c deleted file mode 100644 index c68a5cff00..0000000000 --- a/csu/initfini.c +++ /dev/null @@ -1,138 +0,0 @@ -/* Special .init and .fini section support. - Copyright (C) 1995, 1996, 1997 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 Library General Public - License as published by the Free Software Foundation; either - version 2 of the License, or (at your option) any later version. - - In addition to the permissions in the GNU Library 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 Library 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 Library General Public License for more details. - - You should have received a copy of the GNU Library General Public - License along with the GNU C Library; see the file COPYING.LIB. If not, - write to the Free Software Foundation, 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. */ - -#include <stdlib.h> - -/* We use embedded asm for .section unconditionally, as this makes it - easier to insert the necessary directives into crtn.S. */ -#define SECTION(x) asm (".section " x ); - -/* Embed an #include to pull in the alignment and .end directives. */ -asm ("\n#include \"defs.h\""); - -/* The initial common code ends here. */ -asm ("\n/*@HEADER_ENDS*/"); - -/* To determine whether we need .end and .align: */ -asm ("\n/*@TESTS_BEGIN*/"); -void -dummy (void (*foo) (void)) -{ - if (foo) - (*foo) (); -} -asm ("\n/*@TESTS_END*/"); - -/* The beginning of _init: */ -asm ("\n/*@_init_PROLOG_BEGINS*/"); - -SECTION (".init") -void -_init (void) -{ - /* We cannot use the normal constructor mechanism in gcrt1.o because it - appears before crtbegin.o in the link, so the header elt of .ctors - would come after the elt for __gmon_start__. One approach is for - gcrt1.o to reference a symbol which would be defined by some library - module which has a constructor; but then user code's constructors - would come first, and not be profiled. */ - extern void __gmon_start__ (void) __attribute__ ((weak)); /*weak_extern (__gmon_start__);*/ - -#ifndef WEAK_GMON_START - __gmon_start__ (); -#else - if (__gmon_start__) - __gmon_start__ (); -#endif - - asm ("ALIGN"); - asm("END_INIT"); - /* Now the epilog. */ - asm ("\n/*@_init_PROLOG_ENDS*/"); - asm ("\n/*@_init_EPILOG_BEGINS*/"); - SECTION(".init"); -} -asm ("END_INIT"); -#ifndef WEAK_GMON_START -SECTION(".text"); - -/* This version of __gmon_start__ is used if no other is found. By providing - a default function we avoid the need to test whether the pointer is NULL, - which can be painful on some machines. */ - -void __attribute__ ((weak)) -__gmon_start__ (void) -{ - /* do nothing */ -} -#endif - -/* End of the _init epilog, beginning of the _fini prolog. */ -asm ("\n/*@_init_EPILOG_ENDS*/"); -asm ("\n/*@_fini_PROLOG_BEGINS*/"); - -SECTION (".fini") -void -_fini (void) -{ - - /* End of the _fini prolog. */ - asm ("ALIGN"); - asm ("END_FINI"); - asm ("\n/*@_fini_PROLOG_ENDS*/"); - - { - /* Let GCC know that _fini is not a leaf function by having a dummy - function call here. We arrange for this call to be omitted from - either crt file. */ - extern void i_am_not_a_leaf (void); - i_am_not_a_leaf (); - } - - /* Beginning of the _fini epilog. */ - asm ("\n/*@_fini_EPILOG_BEGINS*/"); - SECTION (".fini"); -} -asm ("END_FINI"); - -/* End of the _fini epilog. Any further generated assembly (e.g. .ident) - is shared between both crt files. */ -asm ("\n/*@_fini_EPILOG_ENDS*/"); -asm ("\n/*@TRAILER_BEGINS*/"); - -/* End of file. */ |