[patch, nios2] Fix bug in nios2 prologue analysis.

Sandra Loosemore sandra@codesourcery.com
Thu Aug 15 20:41:00 GMT 2019


This patch fixes a bug in the nios2 prologue analyzer that was causing 
failures in a couple of test cases.  The bug has been there forever, but 
this code isn't terribly well exercised by the testsuite since the nios2 
backend normally uses the dwarf2 unwinder.

I realize the nios2 backend has a more general problem with using int or 
unsigned int to represent target word-sized values when it really ought 
to be using int32_t or uint32_t.  I think that is a different issue than 
the signedness bug, though.  So, OK to check this in?

-Sandra
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