How to load the address of the instruction which causes Floating point exception

Gowdham Natarajan

Intellectual 610 points

Hi,

Followed by the previous post of mine,

(Initialize floating point configuration in TMDX570LS20SUSB controller?)

and advice given by sunil and brian, i did everything working fine as expected. Thanks for that.

Now i am implementing floating point exception handler.

FYI... In this i listed all the possible ways, VFP exception can occur. The results of all floating point operations are handled inside this function.

Now, i need to know how to find the address of the respective instruction responsible for this exception?

Thanks and Regards

Gowdham Natarajan

over 14 years ago

0 Gowdham Natarajan over 14 years ago

Intellectual 610 points

Hi,

After my study, i found those registers to get the address of exception generating instruction. Those registers are,

FPINST - Contains the exception generating instruction

FPINST2 - contains the bypassed instruction.

Thanks and Regards

Gowdham Natarajan

0 Anthony F. Seely over 9 years ago in reply to Gowdham Natarajan

TI__Guru 68830 points

Gowdham,

I can't find these registers in the Cortex R4 TRM. They seem to be included in VFP11 but that is for the ARM11 and is a bit different than the VFP on the Cortex R4.

Arm-based microcontrollers

Arm-based microcontrollers forum

How to load the address of the instruction which causes Floating point exception

(Initialize floating point configuration in TMDX570LS20SUSB controller?)