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Re: question about pic and relocation
- From: Daniel Jacobowitz <drow at false dot org>
- To: Eric Fisher <joefoxreal at gmail dot com>
- Cc: gcc at gcc dot gnu dot org
- Date: Thu, 23 Feb 2006 00:38:45 -0500
- Subject: Re: question about pic and relocation
- References: <d6afecde0602222133g528850e5v@mail.gmail.com>
On Thu, Feb 23, 2006 at 01:33:05PM +0800, Eric Fisher wrote:
> $ mips-elf-gcc -shared -fpic fun.c -o fun.so -save-temps
>
> We can see this below from fun.s,
> lw $2,%gp_rel(b)($28)
>
> I think symble 'b' should be of GOT relocation.
> But it isn't.
>
> $ mips-elf-readelf -r fun.so
There are no GOT relocations in shared libraries. They're resolved by
the linker.
> I have no idea about the error and the symble 'b' of pic codes.
> Yet, when use this below
> $ mips-elf-as fun.s -call_shared -o fun.so
>
> $ mips-elf-readelf -r fun.so
That's not a shared object, no matter what you call it. You have to
assemble and then link; please let GCC do the linking, it knows how
to invoke the linker properly for each platform.
--
Daniel Jacobowitz
CodeSourcery