gold plugin support

[K Jski]

Sorry for more emails, but I just wanted to clarify if there is any
other easier way then messing with the ld default linker script or
writing an "implicit-linker-script" for ld to pick up and hoping it
does what I want to accomplish of moving function symbols around.
(this is my current approach).
But if I am on the right track let me know. Thank you for your time.

Sincerely,

C Jelesnianski

On Mon, Nov 24, 2014 at 2:12 PM, K Jski <bielsk1@vt.edu> wrote:
> Dear Mr. Coutant,
>
> I have read through the API and did not find the hooks I needed to
> accomplish what I wanted (as you predicted). In this case, do you have
> any tips of how I could accomplish function-alignment via Gold?
>
> Thank you,
>
> C Jelesnianski
>
> On Fri, Nov 21, 2014 at 2:22 PM, K Jski <bielsk1@vt.edu> wrote:
>> Thanks for the quick response! I shall take a look the the API and see
>> if it helps
>>
>> ~C Jelesnianski
>>
>> On Fri, Nov 21, 2014 at 2:18 PM, Cary Coutant <ccoutant@google.com> wrote:
>>> The linker plugin API is described here:
>>>
>>>    https://gcc.gnu.org/wiki/whopr/driver
>>>
>>> The header file in include/plugin-api.h also goes into some detail.
>>>
>>> It's implemented in both gold and the BFD ld.
>>>
>>> The API was designed for LTO (link-time optimization), so I'm not sure
>>> that it provides the hooks you'd need to do what you described.
>>>
>>> -cary
>>>
>>>
>>> On Thu, Nov 20, 2014 at 11:21 AM, K Jski <bielsk1@vt.edu> wrote:
>>>> Dear BinUtils,
>>>>
>>>> I am working on a custom function-address-aligner in order to produce
>>>> an aarch64 binary. I have already tried achieving this with the linaro
>>>> (4.9-2014.10 version to be exact) aarch64-toolchain utilizing their
>>>> aarch64-linux-gnu-ld with the --defsym flag without success. (it does
>>>> align but this causes my micro-test to segfault)
>>>>
>>>> Another approach I had thought of was to write a gold plugin and use
>>>> gold to achieve though I'm having trouble finding any documentation on
>>>> this (like a tutorial for even a super simple plugin )
>>>> the first thing that comes up when I google is LLVM's gold plugin
>>>> which is not what I want I assume. I have dug though gold src code and
>>>> have found a plugin object but its leaving me with not much to work
>>>> with.
>>>>
>>>> Thank you,
>>>>
>>>> C Jelesnianski