ARM Cortex R4F Manuel d'utilisateur Page 33

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© G.N. Khan ARM Processors/Cores – EE8205: Embedded Computer Systems Page: 33
ARM Operating Modes and Register Usage
Exception vector addresses
CPSR[4:0] Mode Use Registers
10000 User Normal user code user
10001 FIQ Processing fast interrupts _fiq
10010 IRQ Processing standard interrupts _irq
10011 SVC Processing software interrupts (SWIs) _svc
10111 Abort Processing memory faults _abt
11011 Undef Handling undefined instruction traps _und
11111 System Running privileged operating system tasks user
Exception Mode Vector address
Reset SVC 0x00000000
Undefined instruction UND 0x00000004
Software interrupt (SWI) SVC 0x00000008
Prefetch abort (instruction fetch memory fault) Abort 0x0000000C
Data abort (data access memory fault) Abort 0x00000010
IRQ (normal interrupt) IRQ 0x00000018
FIQ (fast interrupt) FIQ 0x0000001C
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