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info37
Associate
October 13, 2009
Question

Tracing Undefined_Handler origen.

  • October 13, 2009
  • 2 replies
  • 712 views
Posted on October 13, 2009 at 18:25

Tracing Undefined_Handler origen.

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2 replies

tomas23
Visitor II
May 17, 2011
Posted on May 17, 2011 at 09:58

Hi Mark, create a handler for the Undefined, eg. B Undefined_Handler to stop there. Then place a breakpoint there and when the code stops, read the LR, it should point to PC+4 or PC+8. Then look for this address in the disassembly window of IAR.

Pls read the ARM Architecture Reference Manual or ARM966 Technical Reference Manual on www.arm.com, section about exceptions.

info37
info37Author
Associate
May 17, 2011
Posted on May 17, 2011 at 09:58

Hi. Is it possible to locate in the source code what sentence causes a jump to the Undefined_Handler ? I'm using IAR's workbench.

Thank you.

Mark