[FFmpeg-devel] ARM-NEON patches

[Eli Friedman]

On Wed, Jul 7, 2010 at 3:57 PM, Pavel Pavlov <pavel at summit-tech.ca> wrote:
>
>
>> -----Original Message-----
>> From: ffmpeg-devel-bounces at mplayerhq.hu [mailto:ffmpeg-devel-
>> bounces at mplayerhq.hu] On Behalf Of Reimar D?ffinger
>> Sent: Wednesday, July 07, 2010 16:04
>> To: FFmpeg development discussions and patches
>> Subject: Re: [FFmpeg-devel] ARM-NEON patches
>>
>> On Wed, Jul 07, 2010 at 03:34:52PM -0400, Pavel Pavlov wrote:
>> > How does movw/movt work on elf with function addresses?
>>
>> I'd guess the same way it works with every other address?
>> Fixing it up at load time?
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>
>
> Well, I asked about that because I didn't think that loader actually modifies executable code itself.
> On windows, there is an import table (function pointers) and at load time this pointers are set with function addresses. All the code is simply copied as-is from file to memory. That's how I always thought it works.

Usually, but not always... there's a process called rebasing which
runs if a DLL can't load at its preferred address.  See
http://blogs.msdn.com/b/larryosterman/archive/2004/07/06/174516.aspx .

-Eli