arch/powerpc/lib/reloc.S

   1 /*
   2  * Copyright (C) 2009 Wolfgang Denk <wd@denx.de>
   3  *
   4  * See file CREDITS for list of people who contributed to this
   5  * project.
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License as
   9  * published by the Free Software Foundation; either version 2 of
  10  * the License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  20  * MA 02111-1307 USA
  21  */
  22
  23 #include <ppc_asm.tmpl>
  24
  25         .file   "reloc.S"
  26
  27         .text
  28 #ifndef CONFIG_NAND_SPL
  29         /*
  30          * Function: relocate entries for one exception vector
  31          */
  32         .globl trap_reloc
  33         .type   trap_reloc, @function
  34 trap_reloc:
  35         lwz     r0, 0(r7)               /* hdlr ...             */
  36         add     r0, r0, r3              /*  ... += dest_addr    */
  37         stw     r0, 0(r7)
  38
  39         lwz     r0, 4(r7)               /* int_return ...       */
  40         add     r0, r0, r3              /*  ... += dest_addr    */
  41         stw     r0, 4(r7)
  42
  43         lwz     r0, 8(r7)               /* transfer_to_handler ...*/
  44         add     r0, r0, r3              /*  ... += dest_addr    */
  45         stw     r0, 8(r7)
  46
  47         blr
  48         .size   trap_reloc, .-trap_reloc
  49 #endif