[PATCH] Set rv64gcv as default to enable vector extension for disassembly

[Nelson Chu]

On Thu, Jul 31, 2025 at 3:21 PM Charlie Jenkins <charlie@rivosinc.com>
wrote:

> On Thu, Jul 31, 2025 at 10:37:16AM +0800, Nelson Chu wrote:
> > On Wed, Jul 30, 2025 at 9:09 PM Andreas Schwab <schwab@suse.de> wrote:
> >
> > > Why is that needed?  AFAICT, objdump will happily decode any extension
> > > without that change.
> > >
> >
> >  I guess maybe they are trying to dump an object which writes
> > vector instructions by .insn directives, so the elf architecture
> attribute
> > or mapping symbols won't have v.  I will suggest two solutions here
> rather
>
> The goal here is to be able to use the disassembler from inside of
> native riscv gdb to dump any instruction. Currently it seems like gdb
> will only dump a subset of all instructions, even with the patch you
> sent Nelson. Here is an example program:
>

My patch isn't used to resolve your problem, it just lets assembler and
dis-assembler have the same default arch, so people can just update
riscv_all_supported_ext.  It's probably convenient to be maintained.

Nelson
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