#1918 closed defect (fixed)

sparc64: task context initialization

Reported by: Gedare Bloom Owned by: Joel Sherrill
Priority: normal Milestone: 4.11
Component: score Version: 4.11
Severity: normal Keywords:
Cc: Blocked By:


sparc64-rtems-gcc uses the global g4 register as a segment register. We need to maintain the segment register as pointing to 0. When tasks are allocated with dirty memory the initial context may have some non-zero values in the g4 register. The attached patch makes the appropriate adjustment during context initialization. This problem manifested as a bug in samples/unlimited due to tasks being deleted and created.

Attachments (2)

sparc64-contextinit.diff (654 bytes) - added by Gedare Bloom on 09/20/11 at 15:58:33.
initialize context with cleared g4 register
sparc64-contextinit.ChangeLog (104 bytes) - added by Gedare Bloom on 09/20/11 at 15:59:08.

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Change History (4)

Changed on 09/20/11 at 15:58:33 by Gedare Bloom

Attachment: sparc64-contextinit.diff added

initialize context with cleared g4 register

Changed on 09/20/11 at 15:59:08 by Gedare Bloom


comment:1 Changed on 10/06/11 at 15:43:05 by Joel Sherrill

Component: bspscpukit
Resolution: fixed
Status: newclosed

Patch applied. Closing.

comment:2 Changed on 11/24/14 at 18:58:28 by Gedare Bloom

Version: HEAD4.11

Replace Version=HEAD with Version=4.11 for the tickets with Milestone >= 4.11

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