[parisc-linux] Get rid of %r8 linker stubs
Jeffrey A Law
Thu, 22 Jun 2000 14:35:39 -0600
> = Hello all,
> = The attached patch to puffin.external.hp.com CVS binutils-2.10
> = implements a new linker stub scheme for elf32-hppa. (Well, it's new for
> = gnu - I believe the hp linker does something like this).
> = The new scheme works like this: For any linker input section that needs
> = stub to reach called routines, the linker creates a stub section located
> = immediately prior to the input section. A call is simply redirected to
> = the stub, which consists of a long branch
> = ldil LR'XXX,%r1
> = be,n RR'XXX(%sr4,%r1)
> = to the destination.
An FYI -- this is precisely the kind of scheme that I've wanted to see
for the GNU PA tools.
I'd like to get this code integrated into the official binutils releases.
> = to the implicit %r31 used by "be,l". Additionally, when we finally
> = implement elf32-hppa shared libraries, there are going to be a _lot_ more
> = stubs. We may even exceed the maximum 256k of stubs, especially if we tr
> = to combine .plt and .got with stubs to get a register back.
Not only that, the old scheme was not relocatable since it assumed all the
stubs sat in the first 256k of the address space .