[llvm-dev] Symbolizing relocations in disassembly

[David Blaikie via llvm-dev]

Not sure I'm entirely following - llvm-symbolizer can symbolize addresses
in object files, I think, including applying/interacting with relocations -
I don't think it involves any use of the Disassembler.

On Fri, Jan 28, 2022 at 1:41 PM Nikita Ermoshkin via llvm-dev <
llvm-dev at lists.llvm.org> wrote:

> Hi LLVM devs,
>
> In my experimental backend, I’d like to symbolize the disassembled ELF and
> object files generated by the backend, so that labels/function names are
> printed instead of just memory addresses. When using objdump. The simplest
> implementation I’ve found is the AMDGPU symbolizer in the Disassembler,
> which I mimicked. This works fine only in very specific cases, where the
> address in the operand exists in the section’s symbol table. However, if
> the symbol to reference is in another section, or if the operand value is
> just 0 with a fix-up/relocation, it obviously doesn’t give correct results.
>
> So the question: is there a more robust way to get access to all the
> symbols and relocation data in the target Disassembler? I haven’t fully dug
> through how x86 does it but it seems really complicated, and my much
> simpler backend probably doesn’t need that level of complexity.
>
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