u-boot/lib_ppc/reloc.S
Joakim Tjernlund fc4e188789 ppc: Loose GOT access in IRQ
Using the GOT in IRQ handlers requires r14 to be -ffixed-r14.
Avoid this by relocatate transfer_to_handler too.
This will allow to free up r14 later on.

Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
2010-01-26 19:30:12 +01:00

49 lines
1.3 KiB
ArmAsm

/*
* Copyright (C) 2009 Wolfgang Denk <wd@denx.de>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <ppc_asm.tmpl>
.file "reloc.S"
.text
#ifndef CONFIG_NAND_SPL
/*
* Function: relocate entries for one exception vector
*/
.globl trap_reloc
.type trap_reloc, @function
trap_reloc:
lwz r0, 0(r7) /* hdlr ... */
add r0, r0, r3 /* ... += dest_addr */
stw r0, 0(r7)
lwz r0, 4(r7) /* int_return ... */
add r0, r0, r3 /* ... += dest_addr */
stw r0, 4(r7)
lwz r0, 8(r7) /* transfer_to_handler ...*/
add r0, r0, r3 /* ... += dest_addr */
stw r0, 8(r7)
blr
.size trap_reloc, .-trap_reloc
#endif