How to create stack underflow exception ?

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jani12

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I'm programming Infineon TC29x Aurix Tricore Microcontroller based embedded system in 'C' language.

Consider stack starting at address 0x5000 0000. The stack size is 0x1000.

If I add 0x1000 to current stack pointer(Register A10) and store result in A10, then I should get underflow error.

What might be the code in assembly to change stack pointer? something like following:

stw a10, 0x1000(a10) # I'm not sure if stw is correct opcode ?

what are other options to create stack undeflow exception?
 

Hi,

Simply POP some bytes from stack...without PUSHing them onto stack first.

Klaus
 
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    jani12

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Please provide assembly language code to achieve popping from stack.

Our code is written in embedded 'C'. Do I need to do anything special to add assembly langauge, like asm keyword or disable and enable interrupts, etc.
 

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