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RFC: Disassembly with call frame information

Szabolcs Nagy szabolcs.nagy@arm.com
Thu Oct 26 14:04:10 GMT 2023 
The 10/20/2023 18:25, Hans-Peter Nilsson wrote:
> >   I am not sure how much information to display.  Currently I am just
> >   showing the CFA assignments, but maybe I need to include the rbp and
> >   ra updates as well ?
> 
> Sounds like the information would otherwise be incomplete, with 
> references to those registers but not displaying their values; 
> initial and as they change.  Also, there'd be nice symmetry if 
> --disassemble-with-cfi has the same information as 
> --dwarf=frames-interp.  Maybe tie the option names better?
> Though --disassemble-with-dwarf-frames-interp seems chewy.

fwiw i'd do the cmdline like -r vs '-d -r' for relocs:

if user asks for both disasm and cfi then display the cfi inline
with the asm. or use -d --dwarf=frames-interp-inline.

i prefer --dwarf=frames to --dwarf=frames-interp as it is more
complete (e.g. target specific pseudo regs are not visible in
frames-interp). just interleaving the opcodes with the disasm
sounds good enough for me (the opcodes closely match the .cfi
directives in asm which users should be familiar with).
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