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.syntax unified
.cpu cortex-m4
.fpu vfp
.thumb
.global reset_handler
.type reset_handler, %function
reset_handler:
LDR r0, =_estack
MOV sp, r0
MOVS r0, #0
LDR r1, =_sdata
LDR r2, =_edata
LDR r3, =_sidata
B copy_sidata_loop
copy_sidata:
LDR r4, [r3, r0]
STR r4, [r1, r0]
ADDS r0, r0, #4
copy_sidata_loop:
ADDS r4, r0, r1
CMP r4, r2
BCC copy_sidata
MOVS r0, #0
LDR r1, =_sbss
LDR r2, =_ebss
B reset_bss_loop
reset_bss:
STR r0, [r1]
ADDS r1, r1, #4
reset_bss_loop:
CMP r1, r2
BCC reset_bss
B main
.size reset_handler, .-reset_handler
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