[Bug 1688] New: sparc64 sun4u register misuse

bugzilla-daemon at rtems.org bugzilla-daemon at rtems.org
Wed Aug 25 15:23:34 CDT 2010


           Summary: sparc64 sun4u register misuse
           Product: RTEMS
           Version: HEAD
          Platform: All
        OS/Version: RTEMS
            Status: NEW
          Severity: normal
          Priority: P3
         Component: libcpu
        AssignedTo: joel.sherrill at oarcorp.com
        ReportedBy: giddyup44 at yahoo.com

Created an attachment (id=1027)
 --> (https://www.rtems.org/bugzilla/attachment.cgi?id=1027)
Patch to fix bug.

There is a bug in the sun4u _ISR_Dispatch code that ends up cloberring the
global registers. It manifests primarily as a memory alignment error when the
globals are used to read to/from memory.  I've attached a patch to fix the

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