/*
Copyright (c) 2005 Red Hat Incorporated.
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
The name of Red Hat Incorporated may not be used to endorse
or promote products derived from this software without specific
prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL RED HAT INCORPORATED BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#if defined(__r8c_cpu__) || defined(__m16c_cpu__)
#define A16
#define A(n,w) n
#define W w
#define ALIGN 1
#else
#define A24
#define A(n,w) w
#define W l
#define ALIGN 2
#endif
.text
.global _start
_start:
.LFB2:
fset U /* User stack */
ldc #__stack,sp
#ifdef A16
mov.b #%hi8(__romdatastart),r1h
mov.w #%lo16(__romdatastart),a0
mov.w #__datastart,a1
#else
mov.l #__romdatastart,a0
mov.l #__datastart,a1
#endif
mov.w #__romdatacopysize,r3
shl.w #-1,r3
smovf.w
#ifdef A16
mov.w #__bssstart,a1
#else
mov.l #__bssstart,a1
#endif
mov.w #__bsssize,r3
shl.w #-1,r3
mov.w #0,r0
sstr.w
/* jsr.a __m32c_init */
jsr.a _boot_card
.LFE2:
#ifdef A24
/* rv in r0, ok for arg0 */
#else
mov.w r0,r1
#endif
.global _bsp_reset
_bsp_reset:
jsr.a _sys_exit
.text
.global _m32c_run_preinit_array
.type _m32c_run_preinit_array,@function
_m32c_run_preinit_array:
mov.W #__preinit_array_start,a0
mov.W #__preinit_array_end,a1
jmp.w _m32c_run_inilist
.global _m32c_run_init_array
.type _m32c_run_init_array,@function
_m32c_run_init_array:
mov.W #__init_array_start,a0
mov.W #__init_array_end,a1
jmp.w _m32c_run_inilist
.global _m32c_run_fini_array
.type _m32c_run_fini_array,@function
_m32c_run_fini_array:
mov.W #__fini_array_start,a0
mov.W #__fini_array_end,a1
/* fall through */
_m32c_run_inilist:
next_inilist:
cmp.W a0,a1
jeq done_inilist
pushm a0,a1
mov.W [a0],a0
#ifdef A16
mov.b:s #0,a1 /* zero extends */
jsri.a a1a0
#else
jsri.a a0
#endif
popm a0,a1
add.W A(#2,#4),a0
jmp.b next_inilist
done_inilist:
rts
.section .init,"ax",@progbits
.global __init
.global __m32c_init
__init:
__m32c_init:
enter #0
exitd
.section .fini,"ax",@progbits
.global __fini
.global __m32c_fini
__fini:
__m32c_fini:
enter #0
jsr.a _m32c_run_fini_array
exitd
;;; Provide Dwarf unwinding information that will help GDB stop
;;; backtraces at the right place. This is stolen from assembly
;;; code generated by GCC with -dA.
.section .debug_frame,"",@progbits
.Lframe0:
.4byte .LECIE0-.LSCIE0 ; Length of Common Information Entry
.LSCIE0:
.4byte 0xffffffff ; CIE Identifier Tag
.byte 0x1 ; CIE Version
.ascii "\0" ; CIE Augmentation
.uleb128 0x1 ; CIE Code Alignment Factor
.sleb128 -1 ; CIE Data Alignment Factor
.byte 0xd ; CIE RA Column
.byte 0xc ; DW_CFA_def_cfa
.uleb128 0xc
.uleb128 0x3
.byte 0x8d ; DW_CFA_offset, column 0xd
.uleb128 0x3
.p2align ALIGN
.LECIE0:
.LSFDE0:
.4byte .LEFDE0-.LASFDE0 ; FDE Length
.LASFDE0:
.4byte .Lframe0 ; FDE CIE offset
.4byte .LFB2 ; FDE initial location
.4byte .LFE2-.LFB2 ; FDE address range
.byte 0xf ; DW_CFA_def_cfa_expression
.uleb128 1 ; length of expression
.byte 0x30 ; DW_OP_lit0
.p2align ALIGN
.LEFDE0:
.text
