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/******************************************************************************
* Copyright (c) 2004, 2007 IBM Corporation
* All rights reserved.
* This program and the accompanying materials
* are made available under the terms of the BSD License
* which accompanies this distribution, and is available at
* http://www.opensource.org/licenses/bsd-license.php
*
* Contributors:
* IBM Corporation - initial implementation
*****************************************************************************/
#include <cpu.h>
.section ".slof.loader","ax"
# get our address
.base:
bcl 20,31,0f
.align 3
.st: .quad _slof_text-.base
.stl: .quad _slof_text_size
.sd: .quad _slof_data-.base
.sdl: .quad _slof_data_size
.sbl: .quad _slof_bss_size
0:
mr r16,r3 # ROM Base
mfspr r17, HSPRG1 # Fixme, will be done in pcd
mflr r31
subi r31,r31,4
# copy paflof text
ld r3,.st-.base(r31)
add r3,r3,r31
lis r4,_slof_text@h # Addr of engine code
ori r4,r4,_slof_text@l
ld r5,.stl-.base(31)
bl .copy
lis r3,_slof_text@h # Addr of engine code
ori r3,r3,_slof_text@l
ld r4,.stl-.base(r31)
bl .flush
# copy paflof data
ld r3,.sd-.base(31)
add r3,r3,r31
lis r4,_slof_data@h # Addr of engine data
ori r4,r4,_slof_data@l
ld r5,.sdl-.base(r31)
bl .copy
lis r3,_slof_data@h # Addr of engine data
ori r3,r3,_slof_data@l
ld r4,.sdl-.base(r31)
bl .flush
# zero paflof bss
lis r3,_slof_bss@h # Addr of engine bss
ori r3,r3,_slof_bss@l
ld r4,.sbl-.base(r31)
bl .zero
lis r3,_slof_bss@h # Addr of engine bss
ori r3,r3,_slof_bss@l
ld r4,.sbl-.base(r31)
bl .flush
# fill in handler address
lis r3,_slof_text@h
ori r3,r3,_slof_text@l
ld r3,0(r3)
std r3,0x2ff0(0)
# GO!
ba 0x100
.zero: # zero from r3 size r4
subi r3,r3,8
addi r4,r4,7
srwi r4,r4,3
mtctr r4
li r5,0
0:
stdu r5,8(r3)
bdnz 0b
blr
.copy: # copy from 3 to 4 size 5
subi r3,r3,8
subi r4,r4,8
addi r5,r5,7
srwi r5,r5,3
mtctr r5
0:
ldu r5,8(r3)
stdu r5,8(r4)
bdnz 0b
blr
.flush: # flush at 3 size 4
FLUSH_CACHE(r3, r4)
blr
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