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Re: dwarf2-frame.c question for maintainers
Consider o32. Both the ABI and ISA are 32-bits, but GDB's CORE_ADDR may
be 64-bits. Even if it doesn't appear to make a difference, the MIPS
needs to always sign extend addresses/registers - that's the dogma :-)
Right. And so back to the original question. What is the best way to
have read_reg detect if it should sign-extend? We agreed that passing a
pointer to the CU was out, as was using a global. Do I need to add
something to gdbarch?
Hmm, the architecture vector already has POINTER_TO_ADDRESS and
register_type that can be used to extract [signed] pointers and
registers. Can either of those be used here?
Andrew