Cause of fault
Breakpoint
Watchpoint
BKPT instruction
Vector catch
Prefetch Abort
Data Abort
a. This is the address of the instruction that the processor first executes on Debug state exit. Watchpoints can be imprecise.
RA is not the address of the instruction immediately after the one that hit the watchpoint, the processor might stop a number of
instructions later. The address of the instruction that hit the watchpoint is in the CP15 WFAR.
ARM DDI 0301H
ID012310
ARM
Thumb
Jazelle
RA+4
RA+4
RA+4
RA+8
RA+8
RA+8
RA+4
RA+4
RA+4
RA+4
RA+4
RA+4
RA+4
RA+4
RA+4
RA+8
RA+8
RA+8
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Table 13-24 Values in the link register after exceptions
Return address (RA
a
) meaning
Breakpointed instruction address
Address of the instruction where the execution resumes, a number
of instructions after the one that hit the watchpoint
BKPT instruction address
Vector address
Address of the instruction where the execution resumes
Address of the instruction where the execution resumes
Debug
13-36