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clear BSS

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maralvira
2010-11-07 14:49:42 +00:00
parent 57513948c9
commit f38598ce9f
1 changed files with 12 additions and 1 deletions
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13
cpu/mc1322x/src/start.S
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@@ -30,7 +30,7 @@
* *
* This file is part of the Contiki OS. * This file is part of the Contiki OS.
* *
* $Id: start.S,v 1.1 2010/06/10 14:49:31 maralvira Exp $ * $Id: start.S,v 1.2 2010/11/07 14:49:42 maralvira Exp $
*/ */
@@ -164,6 +164,17 @@ _begin:
msr CPSR_c, #(MODE_SYS) msr CPSR_c, #(MODE_SYS)
/* Clear BSS */
clear_bss:
ldr r0, _bss_start /* find start o
ldr r1, _bss_end /* stop here
mov r2, #0x00000000 /* clear
clbss_l:
str r2, [r0] /* clear loop..
add r0, r0, #4
cmp r0, r1
blt clbss_l
b main b main
_undf: .word __undf // undefined _undf: .word __undf // undefined