| /* Special .init and .fini section support for ia64. |
| Copyright (C) 2000, 2002, 2003, 2005 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.) |
| |
| Note that people who make modified versions of this file are not |
| obligated to grant this special exception for their modified |
| versions; it is their choice whether to do so. The GNU Lesser |
| General Public License gives permission to release a modified |
| version without this exception; this exception also makes it |
| possible to release a modified version which carries forward this |
| exception. |
| |
| 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\n" |
| "#include \"defs.h\"\n" |
| "\n" |
| "/*@HEADER_ENDS*/\n" |
| "\n" |
| "/*@_init_PROLOG_BEGINS*/\n"); |
| |
| |
| /* If we have working .init_array support, we want to keep the .init |
| section empty (apart from the mandatory prologue/epilogue. This |
| ensures that the default unwind conventions (return-pointer in b0, |
| frame state in ar.pfs, etc.) will do the Right Thing. To ensure |
| an empty .init section, we register gmon_initializer() via the |
| .init_array. |
| |
| --davidm 02/10/29 */ |
| |
| static void |
| __attribute__ ((used)) |
| gmon_initializer (void) |
| { |
| extern void weak_function __gmon_start__ (void); |
| |
| if (__gmon_start__) |
| (*__gmon_start__)(); |
| } |
| |
| __asm__ (".section .init_array, \"aw\"\n" |
| "\tdata8 @fptr(gmon_initializer)\n"); |
| |
| |
| __asm__ (".section .init\n" |
| " .global _init#\n" |
| " .proc _init#\n" |
| "_init:\n" |
| " .prologue\n" |
| " .save ar.pfs, r34\n" |
| " alloc r34 = ar.pfs, 0, 3, 0, 0\n" |
| " .vframe r32\n" |
| " mov r32 = r12\n" |
| " .save rp, r33\n" |
| " mov r33 = b0\n" |
| " .body\n" |
| " adds r12 = -16, r12\n" |
| " ;;\n" /* see gmon_initializer() above */ |
| " .endp _init#\n" |
| "\n" |
| "/*@_init_PROLOG_ENDS*/\n" |
| "\n" |
| "/*@_init_EPILOG_BEGINS*/\n" |
| " .section .init\n" |
| " .proc _init#\n" |
| "_init:\n" |
| " .prologue\n" |
| " .save ar.pfs, r34\n" |
| " .vframe r32\n" |
| " .save rp, r33\n" |
| " .body\n" |
| " .regstk 0,2,0,0\n" |
| " mov r12 = r32\n" |
| " mov ar.pfs = r34\n" |
| " mov b0 = r33\n" |
| " br.ret.sptk.many b0\n" |
| " .endp _init#\n" |
| "/*@_init_EPILOG_ENDS*/\n" |
| "\n" |
| "/*@_fini_PROLOG_BEGINS*/\n" |
| " .section .fini\n" |
| " .global _fini#\n" |
| " .proc _fini#\n" |
| "_fini:\n" |
| " .prologue\n" |
| " .save ar.pfs, r34\n" |
| " alloc r34 = ar.pfs, 0, 3, 0, 0\n" |
| " .vframe r32\n" |
| " mov r32 = r12\n" |
| " .save rp, r33\n" |
| " mov r33 = b0\n" |
| " .body\n" |
| " adds r12 = -16, r12\n" |
| " ;;\n" |
| " .endp _fini#\n" |
| "\n" |
| "/*@_fini_PROLOG_ENDS*/\n" |
| " br.call.sptk.many b0 = i_am_not_a_leaf# ;;\n" |
| " ;;\n" |
| "\n" |
| "/*@_fini_EPILOG_BEGINS*/\n" |
| " .section .fini\n" |
| " .proc _fini#\n" |
| "_fini:\n" |
| " .prologue\n" |
| " .save ar.pfs, r34\n" |
| " .vframe r32\n" |
| " .save rp, r33\n" |
| " .body\n" |
| " mov r12 = r32\n" |
| " mov ar.pfs = r34\n" |
| " mov b0 = r33\n" |
| " br.ret.sptk.many b0\n" |
| " .endp _fini#\n" |
| "\n" |
| "/*@_fini_EPILOG_ENDS*/\n" |
| "\n" |
| "/*@TRAILER_BEGINS*/\n" |
| ); |