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[Bug gdb/22499] 8.0 regression: wrongly read $xmm0
- From: "palves at redhat dot com" <sourceware-bugzilla at sourceware dot org>
- To: gdb-prs at sourceware dot org
- Date: Tue, 28 Nov 2017 18:07:13 +0000
- Subject: [Bug gdb/22499] 8.0 regression: wrongly read $xmm0
- Auto-submitted: auto-generated
- References: <bug-22499-4717@http.sourceware.org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=22499
--- Comment #5 from Pedro Alves <palves at redhat dot com> ---
Confirmed, the problem is that we displaced-step a RIP-relative instruction
that needs adjustment when relocated to the scratch pad:
0x00000000004007f5 <+15>: c5 fb 10 05 8b 01 00 00 vmovsd 0x18b(%rip),%xmm0
# 0x400988
... but GDB just copies it over to the scratch pad unmodified...
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