Context Saving Question

Nagaraj Hegde2

During context switching to an ISR do we need to save FPU general purpose register S0-S31.

I have stored D0-D15 using vstmia instruction for Cortex R5. if i have to save S0-S31 what is the instruction to save/restore these registers.

Thanks,

Nagaraj Hegde

over 10 years ago

0 Zhaohong Zhang over 10 years ago

TI__Mastermind 22715 points

Nagaraj,

D0-15 is actually the same as S0-S31. For example, D0 includes S0 and S1. You can check the FPU section of Cortex R5 TRM for more details.

Thanks and regards,

Zhaohong

0 Nagaraj Hegde2 over 10 years ago in reply to Zhaohong Zhang

Prodigy 80 points

Thanks

Arm-based microcontrollers

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Context Saving Question