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/* Copyright (c) 2012-2013 Red Hat, Inc. All rights reserved.
This copyrighted material is made available to anyone wishing to use, modify,
copy, or redistribute it subject to the terms and conditions of the BSD
License. This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY expressed or implied, including the implied warranties
of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. A copy of this license
is available at http://www.opensource.org/licenses. Any Red Hat trademarks that
are incorporated in the source code or documentation are not subject to the BSD
License and may only be used or replicated with the express permission of
Red Hat, Inc.
*/
#include "memmodel.h"
.section ".resetvec", "a"
__msp430_resetvec_hook:
.word __start
.section ".lowtext", "ax", @progbits
.global __start
__start:
mov_ #__stack, R1
;; Disable watchdog timer.
MOV #0x5a80, &0x15C
mov_ #__bssstart, R12
clr.w R13
mov.w #__bsssize, R14
#ifdef __MSP430X_LARGE__
clr.w R15 ; We assume that __bsssize is never > 64M
#endif
call_ #memset
mov_ #__datastart, R12
mov_ #__romdatastart, R13
;; memmove and memcpy do not currently work when src == dst
cmp_ R12, R13
jeq 1f
mov.w #__romdatacopysize, R14
#ifdef __MSP430X_LARGE__
clr.w R15 ; We assume that __romdatacopysize is never > 64M
#endif
call_ #memmove
1:
call_ #__msp430_init
clr.w R12 ; Set argc == 0
call_ #main
call_ #_exit
.word __msp430_resetvec_hook
;----------------------------------------
.global _msp430_run_init_array
.type _msp430_run_init_array,@function
_msp430_run_init_array:
mov_ #__init_array_start, R4
mov_ #__init_array_end, R5
mov_ #PTRsz, R6
br_ #_msp430_run_array
.global _msp430_run_preinit_array
.type _msp430_run_preinit_array,@function
_msp430_run_preinit_array:
mov_ #__preinit_array_start, R4
mov_ #__preinit_array_end, R5
mov_ #PTRsz, R6
br_ #_msp430_run_array
.global _msp430_run_fini_array
.type _msp430_run_fini_array,@function
_msp430_run_fini_array:
mov_ #__fini_array_start, R4
mov_ #__fini_array_end, R5
mov_ #-PTRsz, R6
br_ #_msp430_run_array
_msp430_run_array:
cmp_ R4, R5
jeq _msp430_run_done
mov_ @R4, R7
add_ R6, R4
call_ @R7
br_ _msp430_run_array
_msp430_run_done:
ret_
;----------------------------------------
.section .init,"ax"
.global __msp430_init
__msp430_init:
.section .fini,"ax"
.global __msp430_fini
__msp430_fini:
call_ #_msp430_run_fini_array
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