GDB 4.17 Patch for stack aligned i386 code

John Wehle john@feith.com
Fri Mar 24 15:55:00 GMT 2000


>>> It's desirable to omit the frame pointer when compiling leaf functions
>>> when targeting the x86 processor as this provides another hard register
>>> (%ebp) which can be used by the register allocators.
>
> The code I wrote handles non-leaf functions too.  It only works on x86 at
> the moment, but I tried to make it architecture-independent.

I only handle non-leaf functions if the stack pointer is unchanging (i.e.
there are no arguments placed on the stack of the function being called).
Are you handling non-leaf functions even when the stack pointer is changing?

Does your patch handle functions where the prologue uses "andl" to align
the frame?

-- John
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