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Re: linker plugin api limitation
- From: "H.J. Lu" <hjl dot tools at gmail dot com>
- To: Rafael EspÃndola <rafael dot espindola at gmail dot com>
- Cc: Evgenii Stepanov <eugeni dot stepanov at gmail dot com>, Binutils <binutils at sourceware dot org>, Cary Coutant <ccoutant at gmail dot com>
- Date: Mon, 22 Feb 2016 11:00:11 -0800
- Subject: Re: linker plugin api limitation
- Authentication-results: sourceware.org; auth=none
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On Mon, Feb 22, 2016 at 10:55 AM, Rafael EspÃndola
<rafael.espindola@gmail.com> wrote:
>> So you want to ask plugin what symbols are defined in an IR
>> file without symbol resolution, similar to AR?
>
> The linker has to ask the plugin which symbols are defined. The symbol
> resolution happens in the linker without plugin involvement.
> The reason AR avoids the problem is that it can simply never call
> all_symbols_read hook, which is not an option for a linker.
>
So you want to add
LDPT_GET_DEFINED_SYMBOLS
to enum ld_plugin_tag, which returns a list of symbols defined
in the IR file. Am I correct?
--
H.J.