Bug 11824 - Neon registers q8-q15 not updated on ARM processors
Summary: Neon registers q8-q15 not updated on ARM processors
Status: RESOLVED OBSOLETE
Alias: None
Product: gdb
Classification: Unclassified
Component: gdb (show other bugs)
Version: 6.3
: P2 normal
Target Milestone: 7.1
Assignee: Not yet assigned to anyone
URL:
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Depends on:
Blocks:
 
Reported: 2010-07-20 18:30 UTC by Brett Park
Modified: 2014-09-12 22:23 UTC (History)
2 users (show)

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Description Brett Park 2010-07-20 18:30:31 UTC 
When debugging an application that is using all 16 registers of the neon processor (debugging on an 
iPad Apple version gdb-1461.2) the registers q8-15 are not updated properly. 

For example, 
in this case, r3 contains a pointer to a float array (4 floats)

vld1.32	q1, [r3]
vld1.32	q8, [r3]

when the value is loaded into q1, the register values can be returned properly. However, when the 
values are returned from q8, the are incorrect.

If I do a move from the values of q8 to q0 and then print them out, they display correctly.

This seems to suggest that gdb is having issues grabbing the proper values.
Comment 1 Matthew Gretton-Dann 2010-07-21 08:25:18 UTC 
This should have been fixed on the trunk and will be in gdb 7.2 (see:
http://sourceware.org/ml/gdb-patches/2010-03/msg00539.html).  Please can you try
to reproduce this issue using a recent gdb?
Comment 2 Sergio Durigan Junior 2014-09-12 22:23:42 UTC 
Closing as OBSOLETE due to inactivity.  Feel free to reopen if needed.