* [Gold][Powerpc64] Avoid assertion in relocate
@ 2015-05-04 18:38 Sterling Augustine
2015-05-05 0:14 ` Alan Modra
0 siblings, 1 reply; 3+ messages in thread
From: Sterling Augustine @ 2015-05-04 18:38 UTC (permalink / raw)
To: Binutils, ccoutant, Alan Modra
[-- Attachment #1: Type: text/plain, Size: 679 bytes --]
Hi Cary,
Under certain conditions that have defied my best test-case reduction,
the .debug_addr section can contain references to functions that don't
have pc relative relocations in a .text section, on all architectures.
Due to the way the powerpc64 builds its address tables, these symbols
don't (and shouldn't) get added to its global_entry_table.
This patch from Alan Modra removes an assertion that the entry is
added to the table, and copes with the condition appropriately.
OK for Gold?
Sterling
ChangeLog
2015-05-04 Alan Modra <amodra@gmail.com>
* powerpc.cc (Target_powerpc<size, big_endian>::Relocate::relocate): Handle
address not found instead of asserting.
[-- Attachment #2: debug.patch --]
[-- Type: text/x-patch, Size: 893 bytes --]
diff --git a/gold/powerpc.cc b/gold/powerpc.cc
index fddf3fa..3d753b5 100644
--- a/gold/powerpc.cc
+++ b/gold/powerpc.cc
@@ -6836,8 +6836,11 @@ Target_powerpc<size, big_endian>::Relocate::relocate(
&& !is_branch_reloc(r_type))
{
unsigned int off = target->glink_section()->find_global_entry(gsym);
- gold_assert(off != (unsigned int)-1);
- value = target->glink_section()->global_entry_address() + off;
+ if (off != (unsigned int)-1)
+ {
+ value = target->glink_section()->global_entry_address() + off;
+ has_stub_value = true;
+ }
}
else
{
@@ -6859,8 +6862,8 @@ Target_powerpc<size, big_endian>::Relocate::relocate(
rela.get_r_addend());
gold_assert(off != invalid_address);
value = stub_table->stub_address() + off;
+ has_stub_value = true;
}
- has_stub_value = true;
}
if (r_type == elfcpp::R_POWERPC_GOT16
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [Gold][Powerpc64] Avoid assertion in relocate
2015-05-04 18:38 [Gold][Powerpc64] Avoid assertion in relocate Sterling Augustine
@ 2015-05-05 0:14 ` Alan Modra
2015-05-05 0:32 ` Sterling Augustine
0 siblings, 1 reply; 3+ messages in thread
From: Alan Modra @ 2015-05-05 0:14 UTC (permalink / raw)
To: Sterling Augustine; +Cc: Binutils, ccoutant
On Mon, May 04, 2015 at 11:38:03AM -0700, Sterling Augustine wrote:
> This patch from Alan Modra removes an assertion that the entry is
> added to the table, and copes with the condition appropriately.
Already committed 6ec65f28. Note also the followup faa2211d which
adds back the assertion for non-debug, and handles the analagous case
for plt call stubs as 6ec65f28 did for global entry stubs.
--
Alan Modra
Australia Development Lab, IBM
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [Gold][Powerpc64] Avoid assertion in relocate
2015-05-05 0:14 ` Alan Modra
@ 2015-05-05 0:32 ` Sterling Augustine
0 siblings, 0 replies; 3+ messages in thread
From: Sterling Augustine @ 2015-05-05 0:32 UTC (permalink / raw)
To: Sterling Augustine, Binutils, ccoutant
On Mon, May 4, 2015 at 5:14 PM, Alan Modra <amodra@gmail.com> wrote:
> On Mon, May 04, 2015 at 11:38:03AM -0700, Sterling Augustine wrote:
>> This patch from Alan Modra removes an assertion that the entry is
>> added to the table, and copes with the condition appropriately.
>
> Already committed 6ec65f28. Note also the followup faa2211d which
> adds back the assertion for non-debug, and handles the analagous case
> for plt call stubs as 6ec65f28 did for global entry stubs.
Thanks Alan.
>
> --
> Alan Modra
> Australia Development Lab, IBM
^ permalink raw reply [flat|nested] 3+ messages in thread
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2015-05-05 0:14 ` Alan Modra
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