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SubjectRe: linux-next: build failure after merge of the final tree (powerpc related)
On Thu, Jun 21, 2012 at 08:18:39PM +0930, Alan Modra wrote:
> Linker bug. That's not a sibling call, but a normal function return
> via an out-of-line register restore function.

I couldn't see how this might be occurring, then I remembered the
kernel has this horrible practise of using ld -r to package object
files. So linker generated functions might be munged together with
other functions. Does this help? (It won't if the kernel is
providing its own save/restore functions.)

Index: bfd/elf64-ppc.c
===================================================================
RCS file: /cvs/src/src/bfd/elf64-ppc.c,v
retrieving revision 1.387
diff -u -p -r1.387 elf64-ppc.c
@@ -6494,9 +6494,10 @@ ppc64_elf_func_desc_adjust (bfd *obfd AT

/* Provide any missing _save* and _rest* functions. */
htab->sfpr->size = 0;
- for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
- if (!sfpr_define (info, &funcs[i]))
- return FALSE;
+ if (!info->relocatable)
+ for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++)
+ if (!sfpr_define (info, &funcs[i]))
+ return FALSE;

elf_link_hash_traverse (&htab->elf, func_desc_adjust, info);


--
Alan Modra
Australia Development Lab, IBM


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