+++ /dev/null
-/* 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. */