diff options
Diffstat (limited to 'libc/sysdeps/linux/common')
| -rw-r--r-- | libc/sysdeps/linux/common/initfini.c | 172 |
1 files changed, 0 insertions, 172 deletions
diff --git a/libc/sysdeps/linux/common/initfini.c b/libc/sysdeps/linux/common/initfini.c deleted file mode 100644 index 4941e9ad1..000000000 --- a/libc/sysdeps/linux/common/initfini.c +++ /dev/null @@ -1,172 +0,0 @@ -/* Special .init and .fini section support. - Copyright (C) 1995, 1996, 1997, 2000 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. */ - -#include <features.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 ); - -/* Declare symbols as hidden. Hidden symbols are only seen by - * the link editor and not by the dynamic loader. */ -#ifdef __HAVE_DOT_HIDDEN__ -# define HIDDEN(func) asm (".hidden " #func ); -#else -# define HIDDEN(func) -#endif - -#if defined(__sh__) && !defined(__SH5__) - /* The macro insert this sh specific stuff: - @_SH_GLB_BEGINS - bra 1f - nop - ALIGN - @func_SH_GLB_LABEL - 1: - @_SH_GLB_ENDS - */ -#define GLB_STUFF(func) asm ("\n/*@_SH_GLB_BEGINS*/"); \ - asm ("\n\tbra\t1f\n\tnop\n\tALIGN\n/*@" #func"_SH_GLB_LABEL*/\n1:"); \ - asm ("\n/*@_SH_GLB_ENDS*/"); -#else -#define GLB_STUFF(func) -#endif - -/* The initial common code ends here. */ -asm ("\n/*@HEADER_ENDS*/"); - -/* To determine whether we need .end and .align: */ -//asm ("\n/*@TESTS_BEGIN*/"); -extern void dummy (void (*foo) (void)); -void -dummy (void (*foo) (void)) -{ - if (foo) - (*foo) (); -} -//asm ("\n/*@TESTS_END*/"); - -/* The beginning of _init: */ -asm ("\n/*@_init_PROLOG_BEGINS*/"); - -#ifdef GMON_SUPPORT -asm ("\n/*@_init_GMON_STUFF_BEGINS*/"); -static void -call_gmon_start(void) -{ - extern void __gmon_start__ (void) __attribute__ ((weak)); /*weak_extern (__gmon_start__);*/ - void (*gmon_start) (void) = __gmon_start__; - - if (gmon_start) - gmon_start (); -} -asm ("\n/*@_init_GMON_STUFF_PAUSES*/"); -#endif - -SECTION (".init") -HIDDEN(_init) - -extern void i_am_not_a_leaf (void); -extern void _init (void); -void _init (void) -{ -#ifdef GMON_SUPPORT -asm ("\n/*@_init_GMON_STUFF_UNPAUSES*/"); - /* 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. */ - call_gmon_start (); -asm ("\n/*@_init_GMON_STUFF_ENDS*/"); -#else - asm ("\n/*@_init_PROLOG_PAUSES*/"); - { - /* Let GCC know that _init is not a leaf function by having a dummy - * function call here. We arrange for this call to be omitted from - * either crt file. */ - i_am_not_a_leaf (); - } - asm ("\n/*@_init_PROLOG_UNPAUSES*/"); -#endif - - GLB_STUFF(_init) - asm ("ALIGN"); - asm("END_INIT"); - /* Now the epilog. */ - asm ("\n/*@_init_PROLOG_ENDS*/"); - asm ("\n/*@_init_EPILOG_BEGINS*/"); -} - -/* End of the _init epilog, beginning of the _fini prolog. */ -asm ("\n/*@_init_EPILOG_ENDS*/"); -asm ("\n/*@_fini_PROLOG_BEGINS*/"); - -SECTION (".fini") -HIDDEN(_fini) - -extern void i_am_not_a_leaf2 (void); -extern void _fini (void); -void _fini (void) -{ - - /* End of the _fini prolog. */ - GLB_STUFF(_fini) - 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. */ - i_am_not_a_leaf2 (); - } - - /* Beginning of the _fini epilog. */ - asm ("\n/*@_fini_EPILOG_BEGINS*/"); -} - -/* 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. */ |