arch/powerpc/boot/crtsavres.S

   1 /*
   2  * Special support for eabi and SVR4
   3  *
   4  *   Copyright (C) 1995, 1996, 1998, 2000, 2001 Free Software Foundation, Inc.
   5  *   Copyright 2008 Freescale Semiconductor, Inc.
   6  *   Written By Michael Meissner
   7  *
   8  * Based on gcc/config/rs6000/crtsavres.asm from gcc
   9  *
  10  * This file is free software; you can redistribute it and/or modify it
  11  * under the terms of the GNU General Public License as published by the
  12  * Free Software Foundation; either version 2, or (at your option) any
  13  * later version.
  14  *
  15  * In addition to the permissions in the GNU General Public License, the
  16  * Free Software Foundation gives you unlimited permission to link the
  17  * compiled version of this file with other programs, and to distribute
  18  * those programs without any restriction coming from the use of this
  19  * file.  (The General Public License restrictions do apply in other
  20  * respects; for example, they cover modification of the file, and
  21  * distribution when not linked into another program.)
  22  *
  23  * This file is distributed in the hope that it will be useful, but
  24  * WITHOUT ANY WARRANTY; without even the implied warranty of
  25  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  26  * General Public License for more details.
  27  *
  28  * You should have received a copy of the GNU General Public License
  29  * along with this program; see the file COPYING.  If not, write to
  30  * the Free Software Foundation, 51 Franklin Street, Fifth Floor,
  31  * Boston, MA 02110-1301, USA.
  32  *
  33  *    As a special exception, if you link this library with files
  34  *    compiled with GCC to produce an executable, this does not cause
  35  *    the resulting executable to be covered by the GNU General Public License.
  36  *    This exception does not however invalidate any other reasons why
  37  *    the executable file might be covered by the GNU General Public License.
  38  */
  39
  40         .file   "crtsavres.S"
  41         .section ".text"
  42
  43 /* On PowerPC64 Linux, these functions are provided by the linker.  */
  44 #ifndef __powerpc64__
  45
  46 #define _GLOBAL(name) \
  47         .type name,@function; \
  48         .globl name; \
  49 name:
  50
  51 /* Routines for saving integer registers, called by the compiler.  */
  52 /* Called with r11 pointing to the stack header word of the caller of the */
  53 /* function, just beyond the end of the integer save area.  */
  54
  55 _GLOBAL(_savegpr_14)
  56 _GLOBAL(_save32gpr_14)
  57         stw     14,-72(11)      /* save gp registers */
  58 _GLOBAL(_savegpr_15)
  59 _GLOBAL(_save32gpr_15)
  60         stw     15,-68(11)
  61 _GLOBAL(_savegpr_16)
  62 _GLOBAL(_save32gpr_16)
  63         stw     16,-64(11)
  64 _GLOBAL(_savegpr_17)
  65 _GLOBAL(_save32gpr_17)
  66         stw     17,-60(11)
  67 _GLOBAL(_savegpr_18)
  68 _GLOBAL(_save32gpr_18)
  69         stw     18,-56(11)
  70 _GLOBAL(_savegpr_19)
  71 _GLOBAL(_save32gpr_19)
  72         stw     19,-52(11)
  73 _GLOBAL(_savegpr_20)
  74 _GLOBAL(_save32gpr_20)
  75         stw     20,-48(11)
  76 _GLOBAL(_savegpr_21)
  77 _GLOBAL(_save32gpr_21)
  78         stw     21,-44(11)
  79 _GLOBAL(_savegpr_22)
  80 _GLOBAL(_save32gpr_22)
  81         stw     22,-40(11)
  82 _GLOBAL(_savegpr_23)
  83 _GLOBAL(_save32gpr_23)
  84         stw     23,-36(11)
  85 _GLOBAL(_savegpr_24)
  86 _GLOBAL(_save32gpr_24)
  87         stw     24,-32(11)
  88 _GLOBAL(_savegpr_25)
  89 _GLOBAL(_save32gpr_25)
  90         stw     25,-28(11)
  91 _GLOBAL(_savegpr_26)
  92 _GLOBAL(_save32gpr_26)
  93         stw     26,-24(11)
  94 _GLOBAL(_savegpr_27)
  95 _GLOBAL(_save32gpr_27)
  96         stw     27,-20(11)
  97 _GLOBAL(_savegpr_28)
  98 _GLOBAL(_save32gpr_28)
  99         stw     28,-16(11)
 100 _GLOBAL(_savegpr_29)
 101 _GLOBAL(_save32gpr_29)
 102         stw     29,-12(11)
 103 _GLOBAL(_savegpr_30)
 104 _GLOBAL(_save32gpr_30)
 105         stw     30,-8(11)
 106 _GLOBAL(_savegpr_31)
 107 _GLOBAL(_save32gpr_31)
 108         stw     31,-4(11)
 109         blr
 110
 111 /* Routines for restoring integer registers, called by the compiler.  */
 112 /* Called with r11 pointing to the stack header word of the caller of the */
 113 /* function, just beyond the end of the integer restore area.  */
 114
 115 _GLOBAL(_restgpr_14)
 116 _GLOBAL(_rest32gpr_14)
 117         lwz     14,-72(11)      /* restore gp registers */
 118 _GLOBAL(_restgpr_15)
 119 _GLOBAL(_rest32gpr_15)
 120         lwz     15,-68(11)
 121 _GLOBAL(_restgpr_16)
 122 _GLOBAL(_rest32gpr_16)
 123         lwz     16,-64(11)
 124 _GLOBAL(_restgpr_17)
 125 _GLOBAL(_rest32gpr_17)
 126         lwz     17,-60(11)
 127 _GLOBAL(_restgpr_18)
 128 _GLOBAL(_rest32gpr_18)
 129         lwz     18,-56(11)
 130 _GLOBAL(_restgpr_19)
 131 _GLOBAL(_rest32gpr_19)
 132         lwz     19,-52(11)
 133 _GLOBAL(_restgpr_20)
 134 _GLOBAL(_rest32gpr_20)
 135         lwz     20,-48(11)
 136 _GLOBAL(_restgpr_21)
 137 _GLOBAL(_rest32gpr_21)
 138         lwz     21,-44(11)
 139 _GLOBAL(_restgpr_22)
 140 _GLOBAL(_rest32gpr_22)
 141         lwz     22,-40(11)
 142 _GLOBAL(_restgpr_23)
 143 _GLOBAL(_rest32gpr_23)
 144         lwz     23,-36(11)
 145 _GLOBAL(_restgpr_24)
 146 _GLOBAL(_rest32gpr_24)
 147         lwz     24,-32(11)
 148 _GLOBAL(_restgpr_25)
 149 _GLOBAL(_rest32gpr_25)
 150         lwz     25,-28(11)
 151 _GLOBAL(_restgpr_26)
 152 _GLOBAL(_rest32gpr_26)
 153         lwz     26,-24(11)
 154 _GLOBAL(_restgpr_27)
 155 _GLOBAL(_rest32gpr_27)
 156         lwz     27,-20(11)
 157 _GLOBAL(_restgpr_28)
 158 _GLOBAL(_rest32gpr_28)
 159         lwz     28,-16(11)
 160 _GLOBAL(_restgpr_29)
 161 _GLOBAL(_rest32gpr_29)
 162         lwz     29,-12(11)
 163 _GLOBAL(_restgpr_30)
 164 _GLOBAL(_rest32gpr_30)
 165         lwz     30,-8(11)
 166 _GLOBAL(_restgpr_31)
 167 _GLOBAL(_rest32gpr_31)
 168         lwz     31,-4(11)
 169         blr
 170
 171 /* Routines for restoring integer registers, called by the compiler.  */
 172 /* Called with r11 pointing to the stack header word of the caller of the */
 173 /* function, just beyond the end of the integer restore area.  */
 174
 175 _GLOBAL(_restgpr_14_x)
 176 _GLOBAL(_rest32gpr_14_x)
 177         lwz     14,-72(11)      /* restore gp registers */
 178 _GLOBAL(_restgpr_15_x)
 179 _GLOBAL(_rest32gpr_15_x)
 180         lwz     15,-68(11)
 181 _GLOBAL(_restgpr_16_x)
 182 _GLOBAL(_rest32gpr_16_x)
 183         lwz     16,-64(11)
 184 _GLOBAL(_restgpr_17_x)
 185 _GLOBAL(_rest32gpr_17_x)
 186         lwz     17,-60(11)
 187 _GLOBAL(_restgpr_18_x)
 188 _GLOBAL(_rest32gpr_18_x)
 189         lwz     18,-56(11)
 190 _GLOBAL(_restgpr_19_x)
 191 _GLOBAL(_rest32gpr_19_x)
 192         lwz     19,-52(11)
 193 _GLOBAL(_restgpr_20_x)
 194 _GLOBAL(_rest32gpr_20_x)
 195         lwz     20,-48(11)
 196 _GLOBAL(_restgpr_21_x)
 197 _GLOBAL(_rest32gpr_21_x)
 198         lwz     21,-44(11)
 199 _GLOBAL(_restgpr_22_x)
 200 _GLOBAL(_rest32gpr_22_x)
 201         lwz     22,-40(11)
 202 _GLOBAL(_restgpr_23_x)
 203 _GLOBAL(_rest32gpr_23_x)
 204         lwz     23,-36(11)
 205 _GLOBAL(_restgpr_24_x)
 206 _GLOBAL(_rest32gpr_24_x)
 207         lwz     24,-32(11)
 208 _GLOBAL(_restgpr_25_x)
 209 _GLOBAL(_rest32gpr_25_x)
 210         lwz     25,-28(11)
 211 _GLOBAL(_restgpr_26_x)
 212 _GLOBAL(_rest32gpr_26_x)
 213         lwz     26,-24(11)
 214 _GLOBAL(_restgpr_27_x)
 215 _GLOBAL(_rest32gpr_27_x)
 216         lwz     27,-20(11)
 217 _GLOBAL(_restgpr_28_x)
 218 _GLOBAL(_rest32gpr_28_x)
 219         lwz     28,-16(11)
 220 _GLOBAL(_restgpr_29_x)
 221 _GLOBAL(_rest32gpr_29_x)
 222         lwz     29,-12(11)
 223 _GLOBAL(_restgpr_30_x)
 224 _GLOBAL(_rest32gpr_30_x)
 225         lwz     30,-8(11)
 226 _GLOBAL(_restgpr_31_x)
 227 _GLOBAL(_rest32gpr_31_x)
 228         lwz     0,4(11)
 229         lwz     31,-4(11)
 230         mtlr    0
 231         mr      1,11
 232         blr
 233 #endif