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- UID
- 1066743
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ARM CPSR/SPSR 的示意图
![](http://img.blog.csdn.net/20130829124841875?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvY2Z5X3Bob25leA==/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/SouthEast)
- ENTRY
- EXPORT __main
- __main
- SVC_Stack
- Mode_SVC EQU 0x13
- I_Bit EQU 0x80
- F_Bit EQU 0x40
- ; Set up the SVC stack pointer and return to SVC mode
- MOV R0, #Mode_SVC:OR:I_Bit:OR:F_Bit ; No interrupts
- MSR CPSR_c, R0
- LDR sp, =STACK_ADDR
- nop
- nop
- nop
- nop
- nop
- nop
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