sysdeps/sh/elf/initfini.c

   1 /* Special .init and .fini section support for SH.
   2    Copyright (C) 2000, 2002 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 /* This file is compiled into assembly code which is then munged by a sed
  21    script into two files: crti.s and crtn.s.
  22
  23    * crti.s puts a function prologue at the beginning of the
  24    .init and .fini sections and defines global symbols for
  25    those addresses, so they can be called as functions.
  26
  27    * crtn.s puts the corresponding function epilogues
  28    in the .init and .fini sections. */
  29
  30 __asm__ ("\
  31 \n\
  32 #include \"defs.h\"\n\
  33 #define SHARED\n\
  34 \n\
  35 /*@HEADER_ENDS*/\n\
  36 \n\
  37 /*@TESTS_BEGIN*/\n\
  38 \n\
  39 /*@TESTS_END*/\n\
  40 \n\
  41 /*@_init_PROLOG_BEGINS*/\n\
  42         .section .init\n\
  43         .align 5\n\
  44         .global _init\n\
  45         .type   _init,@function\n\
  46 _init:\n\
  47         mov.l   r12,@-r15\n\
  48         mov.l   r14,@-r15\n\
  49         sts.l   pr,@-r15\n\
  50 #ifdef SHARED\n\
  51         mova    .L22,r0\n\
  52         mov.l   .L22,r12\n\
  53         add     r0,r12\n\
  54         mova    .L23,r0\n\
  55         mov.l   .L23,r1\n\
  56         add     r0,r1\n\
  57 #else\n\
  58         mov.l   .L23,r1\n\
  59 #endif\n\
  60         jsr     @r1\n\
  61          mov    r15,r14\n\
  62         bra     1f\n\
  63          nop\n\
  64         .align 2\n\
  65 #ifdef SHARED\n\
  66 .L22:\n\
  67         .long   _GLOBAL_OFFSET_TABLE_\n\
  68 .L23:\n\
  69         .long   __gmon_start__@PLT\n\
  70 #else\n\
  71 .L23:\n\
  72         .long   __gmon_start__\n\
  73 #endif\n\
  74 1:\n\
  75         ALIGN\n\
  76         END_INIT\n\
  77 \n\
  78         \n\
  79 /*@_init_PROLOG_ENDS*/\n\
  80 \n\
  81 /*@_init_EPILOG_BEGINS*/\n\
  82         .section .init\n\
  83         mov     r14,r15\n\
  84         lds.l   @r15+,pr\n\
  85         mov.l   @r15+,r14\n\
  86         rts     \n\
  87         mov.l   @r15+,r12\n\
  88         END_INIT\n\
  89         .section .text\n\
  90         .align 5\n\
  91         .weak   __gmon_start__\n\
  92         .type   __gmon_start__,@function\n\
  93 __gmon_start__:\n\
  94         mov.l   r14,@-r15\n\
  95         mov     r15,r14\n\
  96         mov     r14,r15\n\
  97         rts     \n\
  98         mov.l   @r15+,r14\n\
  99         \n\
 100 /*@_init_EPILOG_ENDS*/\n\
 101 \n\
 102 /*@_fini_PROLOG_BEGINS*/\n\
 103         .section .fini\n\
 104         .align 5\n\
 105         .global _fini\n\
 106         .type   _fini,@function\n\
 107 _fini:\n\
 108         mov.l   r12,@-r15\n\
 109         mov.l   r14,@-r15\n\
 110         sts.l   pr,@-r15\n\
 111 #ifdef SHARED\n\
 112         mova    .L27,r0\n\
 113         mov.l   .L27,r12\n\
 114         add     r0,r12\n\
 115 #endif\n\
 116         mov     r15,r14\n\
 117         ALIGN\n\
 118         END_FINI\n\
 119 #ifdef SHARED\n\
 120         bra     1f\n\
 121          nop\n\
 122         .align  2\n\
 123 .L27:\n\
 124         .long   _GLOBAL_OFFSET_TABLE_\n\
 125 #endif\n\
 126 1:\n\
 127 /*@_fini_PROLOG_ENDS*/\n\
 128 \n\
 129 /*@_fini_EPILOG_BEGINS*/\n\
 130         .section .fini\n\
 131         mov     r14,r15\n\
 132         lds.l   @r15+,pr\n\
 133         mov.l   @r15+,r14\n\
 134         rts     \n\
 135         mov.l   @r15+,r12\n\
 136 \n\
 137         END_FINI\n\
 138         \n\
 139 /*@_fini_EPILOG_ENDS*/\n\
 140 \n\
 141 /*@TRAILER_BEGINS*/\
 142 ");