diff options
Diffstat (limited to 'init.s')
| -rw-r--r-- | init.s | 69 |
1 files changed, 69 insertions, 0 deletions
@@ -0,0 +1,69 @@ +; https://github.com/dwelch67/stm32_samples +; http://stackoverflow.com/questions/9565921/cortex-m3-initialisation + +.syntax unified +.cpu cortex-m3 +.thumb + +.section isr_vectors +.thumb_func +.global vectors +vectors: +stacktop: .word 0x20001000 +.word _Reset_Handler +.word NMI_Handler +.word HardFault_Handler +.word MemManage_Handler +.word BusFault_Handler +.word UsageFault_Handler +.word hang2 +.word hang2 +.word hang2 +.word hang2 +.word hang2 +.word hang2 +.word hang2 +.word hang2 +.word hang2 + +.global fault_code +fault_code: +.word 0 + +.thumb_func +.global _Reset_Handler +_Reset_Handler: + bl main + b hang2 + +.thumb_func +hang2: + b . + +.thumb_func +NMI_Handler: + movs r0, #1 + b hang2 + +.thumb_func +HardFault_Handler: + tst lr, #4 + ite eq + mrseq r0, msp + mrsne r0, psp + b HardFault_Handler_C + +.thumb_func +MemManage_Handler: + movs r0, #3 + b hang2 + +.thumb_func +BusFault_Handler: + movs r0, #4 + b hang2 + +.thumb_func +UsageFault_Handler: + mov r0, #5 + b hang2 |