lib/csu/powerpc/dot_init.h

   1 /*      $NetBSD: dot_init.h,v 1.8 2011/07/02 07:28:08 matt Exp $        */
   2
   3 /*-
   4  * Copyright (c) 2001 Ross Harvey
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *      This product includes software developed by the NetBSD
  18  *      Foundation, Inc. and its contributors.
  19  * 4. Neither the name of The NetBSD Foundation nor the names of its
  20  *    contributors may be used to endorse or promote products derived
  21  *    from this software without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  24  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  25  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  26  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  27  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  28  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  29  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  30  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  31  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  32  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  33  * POSSIBILITY OF SUCH DAMAGE.
  34  */
  35
  36 #include <sys/cdefs.h>                  /* RCS ID & Copyright macro defns */
  37
  38 #define MD_SECTION_PROLOGUE(sect, entry_pt)                 \
  39                 __asm (                                     \
  40                 ".section "#sect",\"ax\",@progbits      \n" \
  41                 ".global "#entry_pt"                    \n" \
  42                 #entry_pt":                             \n" \
  43                 "       mflr    %r0                     \n" \
  44                 "       stw     %r0,4(%r1)              \n" \
  45                 "       stwu    %r1,-16(%r1)            \n" \
  46                 "       /* fall thru */                 \n" \
  47                 ".previous")
  48
  49 #define MD_SECTION_EPILOGUE(sect)                           \
  50                 __asm (                                     \
  51                 ".section "#sect",\"ax\",@progbits      \n" \
  52                 "       addi    %r1,%r1,16              \n" \
  53                 "       lwz     %r0,4(%r1)              \n" \
  54                 "       mtlr    %r0                     \n" \
  55                 "       blr                             \n" \
  56                 ".previous")
  57
  58 #define MD_INIT_SECTION_PROLOGUE MD_SECTION_PROLOGUE(.init, _init)
  59 #define MD_FINI_SECTION_PROLOGUE MD_SECTION_PROLOGUE(.fini, _fini)
  60
  61 #define MD_INIT_SECTION_EPILOGUE MD_SECTION_EPILOGUE(.init)
  62 #define MD_FINI_SECTION_EPILOGUE MD_SECTION_EPILOGUE(.fini)