arch/powerpc/lib/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  * 64 bit additions from reading the PPC elf64abi document.
  10  *
  11  * This file is free software; you can redistribute it and/or modify it
  12  * under the terms of the GNU General Public License as published by the
  13  * Free Software Foundation; either version 2, or (at your option) any
  14  * later version.
  15  *
  16  * In addition to the permissions in the GNU General Public License, the
  17  * Free Software Foundation gives you unlimited permission to link the
  18  * compiled version of this file with other programs, and to distribute
  19  * those programs without any restriction coming from the use of this
  20  * file.  (The General Public License restrictions do apply in other
  21  * respects; for example, they cover modification of the file, and
  22  * distribution when not linked into another program.)
  23  *
  24  * This file is distributed in the hope that it will be useful, but
  25  * WITHOUT ANY WARRANTY; without even the implied warranty of
  26  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  27  * General Public License for more details.
  28  *
  29  * You should have received a copy of the GNU General Public License
  30  * along with this program; see the file COPYING.  If not, write to
  31  * the Free Software Foundation, 51 Franklin Street, Fifth Floor,
  32  * Boston, MA 02110-1301, USA.
  33  *
  34  *    As a special exception, if you link this library with files
  35  *    compiled with GCC to produce an executable, this does not cause
  36  *    the resulting executable to be covered by the GNU General Public License.
  37  *    This exception does not however invalidate any other reasons why
  38  *    the executable file might be covered by the GNU General Public License.
  39  */
  40
  41 #include <asm/ppc_asm.h>
  42
  43         .file   "crtsavres.S"
  44         .section ".text"
  45
  46 #ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
  47
  48 #ifndef CONFIG_PPC64
  49
  50 /* Routines for saving integer registers, called by the compiler.  */
  51 /* Called with r11 pointing to the stack header word of the caller of the */
  52 /* function, just beyond the end of the integer save area.  */
  53
  54 _GLOBAL(_savegpr_14)
  55 _GLOBAL(_save32gpr_14)
  56         stw     14,-72(11)      /* save gp registers */
  57 _GLOBAL(_savegpr_15)
  58 _GLOBAL(_save32gpr_15)
  59         stw     15,-68(11)
  60 _GLOBAL(_savegpr_16)
  61 _GLOBAL(_save32gpr_16)
  62         stw     16,-64(11)
  63 _GLOBAL(_savegpr_17)
  64 _GLOBAL(_save32gpr_17)
  65         stw     17,-60(11)
  66 _GLOBAL(_savegpr_18)
  67 _GLOBAL(_save32gpr_18)
  68         stw     18,-56(11)
  69 _GLOBAL(_savegpr_19)
  70 _GLOBAL(_save32gpr_19)
  71         stw     19,-52(11)
  72 _GLOBAL(_savegpr_20)
  73 _GLOBAL(_save32gpr_20)
  74         stw     20,-48(11)
  75 _GLOBAL(_savegpr_21)
  76 _GLOBAL(_save32gpr_21)
  77         stw     21,-44(11)
  78 _GLOBAL(_savegpr_22)
  79 _GLOBAL(_save32gpr_22)
  80         stw     22,-40(11)
  81 _GLOBAL(_savegpr_23)
  82 _GLOBAL(_save32gpr_23)
  83         stw     23,-36(11)
  84 _GLOBAL(_savegpr_24)
  85 _GLOBAL(_save32gpr_24)
  86         stw     24,-32(11)
  87 _GLOBAL(_savegpr_25)
  88 _GLOBAL(_save32gpr_25)
  89         stw     25,-28(11)
  90 _GLOBAL(_savegpr_26)
  91 _GLOBAL(_save32gpr_26)
  92         stw     26,-24(11)
  93 _GLOBAL(_savegpr_27)
  94 _GLOBAL(_save32gpr_27)
  95         stw     27,-20(11)
  96 _GLOBAL(_savegpr_28)
  97 _GLOBAL(_save32gpr_28)
  98         stw     28,-16(11)
  99 _GLOBAL(_savegpr_29)
 100 _GLOBAL(_save32gpr_29)
 101         stw     29,-12(11)
 102 _GLOBAL(_savegpr_30)
 103 _GLOBAL(_save32gpr_30)
 104         stw     30,-8(11)
 105 _GLOBAL(_savegpr_31)
 106 _GLOBAL(_save32gpr_31)
 107         stw     31,-4(11)
 108         blr
 109
 110 /* Routines for restoring integer registers, called by the compiler.  */
 111 /* Called with r11 pointing to the stack header word of the caller of the */
 112 /* function, just beyond the end of the integer restore area.  */
 113
 114 _GLOBAL(_restgpr_14)
 115 _GLOBAL(_rest32gpr_14)
 116         lwz     14,-72(11)      /* restore gp registers */
 117 _GLOBAL(_restgpr_15)
 118 _GLOBAL(_rest32gpr_15)
 119         lwz     15,-68(11)
 120 _GLOBAL(_restgpr_16)
 121 _GLOBAL(_rest32gpr_16)
 122         lwz     16,-64(11)
 123 _GLOBAL(_restgpr_17)
 124 _GLOBAL(_rest32gpr_17)
 125         lwz     17,-60(11)
 126 _GLOBAL(_restgpr_18)
 127 _GLOBAL(_rest32gpr_18)
 128         lwz     18,-56(11)
 129 _GLOBAL(_restgpr_19)
 130 _GLOBAL(_rest32gpr_19)
 131         lwz     19,-52(11)
 132 _GLOBAL(_restgpr_20)
 133 _GLOBAL(_rest32gpr_20)
 134         lwz     20,-48(11)
 135 _GLOBAL(_restgpr_21)
 136 _GLOBAL(_rest32gpr_21)
 137         lwz     21,-44(11)
 138 _GLOBAL(_restgpr_22)
 139 _GLOBAL(_rest32gpr_22)
 140         lwz     22,-40(11)
 141 _GLOBAL(_restgpr_23)
 142 _GLOBAL(_rest32gpr_23)
 143         lwz     23,-36(11)
 144 _GLOBAL(_restgpr_24)
 145 _GLOBAL(_rest32gpr_24)
 146         lwz     24,-32(11)
 147 _GLOBAL(_restgpr_25)
 148 _GLOBAL(_rest32gpr_25)
 149         lwz     25,-28(11)
 150 _GLOBAL(_restgpr_26)
 151 _GLOBAL(_rest32gpr_26)
 152         lwz     26,-24(11)
 153 _GLOBAL(_restgpr_27)
 154 _GLOBAL(_rest32gpr_27)
 155         lwz     27,-20(11)
 156 _GLOBAL(_restgpr_28)
 157 _GLOBAL(_rest32gpr_28)
 158         lwz     28,-16(11)
 159 _GLOBAL(_restgpr_29)
 160 _GLOBAL(_rest32gpr_29)
 161         lwz     29,-12(11)
 162 _GLOBAL(_restgpr_30)
 163 _GLOBAL(_rest32gpr_30)
 164         lwz     30,-8(11)
 165 _GLOBAL(_restgpr_31)
 166 _GLOBAL(_rest32gpr_31)
 167         lwz     31,-4(11)
 168         blr
 169
 170 /* Routines for restoring integer registers, called by the compiler.  */
 171 /* Called with r11 pointing to the stack header word of the caller of the */
 172 /* function, just beyond the end of the integer restore area.  */
 173
 174 _GLOBAL(_restgpr_14_x)
 175 _GLOBAL(_rest32gpr_14_x)
 176         lwz     14,-72(11)      /* restore gp registers */
 177 _GLOBAL(_restgpr_15_x)
 178 _GLOBAL(_rest32gpr_15_x)
 179         lwz     15,-68(11)
 180 _GLOBAL(_restgpr_16_x)
 181 _GLOBAL(_rest32gpr_16_x)
 182         lwz     16,-64(11)
 183 _GLOBAL(_restgpr_17_x)
 184 _GLOBAL(_rest32gpr_17_x)
 185         lwz     17,-60(11)
 186 _GLOBAL(_restgpr_18_x)
 187 _GLOBAL(_rest32gpr_18_x)
 188         lwz     18,-56(11)
 189 _GLOBAL(_restgpr_19_x)
 190 _GLOBAL(_rest32gpr_19_x)
 191         lwz     19,-52(11)
 192 _GLOBAL(_restgpr_20_x)
 193 _GLOBAL(_rest32gpr_20_x)
 194         lwz     20,-48(11)
 195 _GLOBAL(_restgpr_21_x)
 196 _GLOBAL(_rest32gpr_21_x)
 197         lwz     21,-44(11)
 198 _GLOBAL(_restgpr_22_x)
 199 _GLOBAL(_rest32gpr_22_x)
 200         lwz     22,-40(11)
 201 _GLOBAL(_restgpr_23_x)
 202 _GLOBAL(_rest32gpr_23_x)
 203         lwz     23,-36(11)
 204 _GLOBAL(_restgpr_24_x)
 205 _GLOBAL(_rest32gpr_24_x)
 206         lwz     24,-32(11)
 207 _GLOBAL(_restgpr_25_x)
 208 _GLOBAL(_rest32gpr_25_x)
 209         lwz     25,-28(11)
 210 _GLOBAL(_restgpr_26_x)
 211 _GLOBAL(_rest32gpr_26_x)
 212         lwz     26,-24(11)
 213 _GLOBAL(_restgpr_27_x)
 214 _GLOBAL(_rest32gpr_27_x)
 215         lwz     27,-20(11)
 216 _GLOBAL(_restgpr_28_x)
 217 _GLOBAL(_rest32gpr_28_x)
 218         lwz     28,-16(11)
 219 _GLOBAL(_restgpr_29_x)
 220 _GLOBAL(_rest32gpr_29_x)
 221         lwz     29,-12(11)
 222 _GLOBAL(_restgpr_30_x)
 223 _GLOBAL(_rest32gpr_30_x)
 224         lwz     30,-8(11)
 225 _GLOBAL(_restgpr_31_x)
 226 _GLOBAL(_rest32gpr_31_x)
 227         lwz     0,4(11)
 228         lwz     31,-4(11)
 229         mtlr    0
 230         mr      1,11
 231         blr
 232
 233 #else /* CONFIG_PPC64 */
 234
 235 .globl  _savegpr0_14
 236 _savegpr0_14:
 237         std     r14,-144(r1)
 238 .globl  _savegpr0_15
 239 _savegpr0_15:
 240         std     r15,-136(r1)
 241 .globl  _savegpr0_16
 242 _savegpr0_16:
 243         std     r16,-128(r1)
 244 .globl  _savegpr0_17
 245 _savegpr0_17:
 246         std     r17,-120(r1)
 247 .globl  _savegpr0_18
 248 _savegpr0_18:
 249         std     r18,-112(r1)
 250 .globl  _savegpr0_19
 251 _savegpr0_19:
 252         std     r19,-104(r1)
 253 .globl  _savegpr0_20
 254 _savegpr0_20:
 255         std     r20,-96(r1)
 256 .globl  _savegpr0_21
 257 _savegpr0_21:
 258         std     r21,-88(r1)
 259 .globl  _savegpr0_22
 260 _savegpr0_22:
 261         std     r22,-80(r1)
 262 .globl  _savegpr0_23
 263 _savegpr0_23:
 264         std     r23,-72(r1)
 265 .globl  _savegpr0_24
 266 _savegpr0_24:
 267         std     r24,-64(r1)
 268 .globl  _savegpr0_25
 269 _savegpr0_25:
 270         std     r25,-56(r1)
 271 .globl  _savegpr0_26
 272 _savegpr0_26:
 273         std     r26,-48(r1)
 274 .globl  _savegpr0_27
 275 _savegpr0_27:
 276         std     r27,-40(r1)
 277 .globl  _savegpr0_28
 278 _savegpr0_28:
 279         std     r28,-32(r1)
 280 .globl  _savegpr0_29
 281 _savegpr0_29:
 282         std     r29,-24(r1)
 283 .globl  _savegpr0_30
 284 _savegpr0_30:
 285         std     r30,-16(r1)
 286 .globl  _savegpr0_31
 287 _savegpr0_31:
 288         std     r31,-8(r1)
 289         std     r0,16(r1)
 290         blr
 291
 292 .globl  _restgpr0_14
 293 _restgpr0_14:
 294         ld      r14,-144(r1)
 295 .globl  _restgpr0_15
 296 _restgpr0_15:
 297         ld      r15,-136(r1)
 298 .globl  _restgpr0_16
 299 _restgpr0_16:
 300         ld      r16,-128(r1)
 301 .globl  _restgpr0_17
 302 _restgpr0_17:
 303         ld      r17,-120(r1)
 304 .globl  _restgpr0_18
 305 _restgpr0_18:
 306         ld      r18,-112(r1)
 307 .globl  _restgpr0_19
 308 _restgpr0_19:
 309         ld      r19,-104(r1)
 310 .globl  _restgpr0_20
 311 _restgpr0_20:
 312         ld      r20,-96(r1)
 313 .globl  _restgpr0_21
 314 _restgpr0_21:
 315         ld      r21,-88(r1)
 316 .globl  _restgpr0_22
 317 _restgpr0_22:
 318         ld      r22,-80(r1)
 319 .globl  _restgpr0_23
 320 _restgpr0_23:
 321         ld      r23,-72(r1)
 322 .globl  _restgpr0_24
 323 _restgpr0_24:
 324         ld      r24,-64(r1)
 325 .globl  _restgpr0_25
 326 _restgpr0_25:
 327         ld      r25,-56(r1)
 328 .globl  _restgpr0_26
 329 _restgpr0_26:
 330         ld      r26,-48(r1)
 331 .globl  _restgpr0_27
 332 _restgpr0_27:
 333         ld      r27,-40(r1)
 334 .globl  _restgpr0_28
 335 _restgpr0_28:
 336         ld      r28,-32(r1)
 337 .globl  _restgpr0_29
 338 _restgpr0_29:
 339         ld      r0,16(r1)
 340         ld      r29,-24(r1)
 341         mtlr    r0
 342         ld      r30,-16(r1)
 343         ld      r31,-8(r1)
 344         blr
 345
 346 .globl  _restgpr0_30
 347 _restgpr0_30:
 348         ld      r30,-16(r1)
 349 .globl  _restgpr0_31
 350 _restgpr0_31:
 351         ld      r0,16(r1)
 352         ld      r31,-8(r1)
 353         mtlr    r0
 354         blr
 355
 356 #endif /* CONFIG_PPC64 */
 357
 358 #endif