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[Bug dynamic-link/17354] New: tile: signed dynamic relocations aren't handled correctly
- From: "cmetcalf at tilera dot com" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sourceware dot org
- Date: Sat, 06 Sep 2014 16:22:08 +0000
- Subject: [Bug dynamic-link/17354] New: tile: signed dynamic relocations aren't handled correctly
- Auto-submitted: auto-generated
https://sourceware.org/bugzilla/show_bug.cgi?id=17354
Bug ID: 17354
Summary: tile: signed dynamic relocations aren't handled
correctly
Product: glibc
Version: 2.19
Status: NEW
Severity: normal
Priority: P2
Component: dynamic-link
Assignee: unassigned at sourceware dot org
Reporter: cmetcalf at tilera dot com
Target: tilegx, tilepro
The tst-pie1 regression test fails on tile. The issue is that we're not
properly
handling signed relocations. The HWx_LAST relocations are loaded with
"moveli",
which sign-extends. Similarly the HW8 relocations tend to be for "movei"
(sign-extending) and BrOff and JOff_Long are both sign-extending. A simple way
to demonstrate the failure is to take two simple assembly programs like
.global l1
l1:
j l2
and a corresponding program with "l2: j l1", build them both without -fpic but
as shared objects, and link them against a no-op main(). Trying to run the
resulting program generates a "Relocation too large" failure, even though the
l1 and l2 labels are quite close in memory.
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