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/*
Copyright (C) 2011 Michael Ossmann <mike@ossmann.com>
Copyright (C) 2010 DJ Delorie <dj@redhat.com>
This file 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 3, or (at your option) any later
version.
This file 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 file; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>.
*/
.include "r8c2l.inc"
.section ".vec", "a"
.3byte 0 ; UND
.byte 0xff
.3byte 0 ; overflow
.byte 0xff
.3byte 0 ; BRK, see also ivect
.byte 0xff
.section ".resetvec", "a"
.global _reset
_reset:
.3byte _start
.byte 0xff ; watchdog settings.
.text
.global _start
_start:
fclr U /* Interrupt stack gets the big main stack. */
ldc #__stack,sp
; We're going to use a combined stack, because we're low on memory.
; fset U /* User stack gets the little one. */
; ldc #__istack,sp
ldc #%lo16(_ivects),intbl
ldc #%hi16(_ivects),intbh
; Copy ROM data to RAM
mov.b #%hi8(__romdatastart),r1h
mov.w #%lo16(__romdatastart),a0
mov.w #__datastart,a1
mov.w #__romdatacopysize,r3
shl.w #-1,r3
smovf.w
mov.w #__bssstart,a1
mov.w #__bsssize,r3
shl.w #-1,r3
mov.w #0,r0
sstr.w
; Run the main application
jmp.w _main
.global __reset
__reset:
.global __exit
__exit:
bset $prc1, prcr
bset $pm03, pm0
jmp.b __exit
.bss
.global __impure_ptr
__impure_ptr:
.space 10
.global mem0
mem0: .space 1
.global mem1
mem1: .space 1
.global mem2
mem2: .space 1
.global mem3
mem3: .space 1
.global mem4
mem4: .space 1
.global mem5
mem5: .space 1
.global mem6
mem6: .space 1
.global mem7
mem7: .space 1
.global mem8
mem8: .space 1
.global mem9
mem9: .space 1
.global mem10
mem10: .space 1
.global mem11
mem11: .space 1
.global mem12
mem12: .space 1
.global mem13
mem13: .space 1
.global mem14
mem14: .space 1
.global mem15
mem15: .space 1
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