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Posted to commits@harmony.apache.org by "Gregory Shimansky (JIRA)" <ji...@apache.org> on 2006/12/09 01:33:24 UTC
[jira] Assigned: (HARMONY-2531) [drlvm][jvmti] Incorrect code type
when HWE occures on JIT breakpoint
[ http://issues.apache.org/jira/browse/HARMONY-2531?page=all ]
Gregory Shimansky reassigned HARMONY-2531:
------------------------------------------
Assignee: Gregory Shimansky
> [drlvm][jvmti] Incorrect code type when HWE occures on JIT breakpoint
> ---------------------------------------------------------------------
>
> Key: HARMONY-2531
> URL: http://issues.apache.org/jira/browse/HARMONY-2531
> Project: Harmony
> Issue Type: Bug
> Components: DRLVM
> Environment: ia32
> Reporter: Ilya Berezhniuk
> Assigned To: Gregory Shimansky
> Priority: Minor
> Attachments: exception_in_buffer.win.patch
>
>
> When JVMTI breakpoint is occured in JITted code, execution is stopped on instrumented instruction. To continue execution, breakpoint handler copies original instruction to special buffer and executes it.
> When such instruction produces hardware exception, exception handler/signal handlers receive buffer address instead of original address and cannot detect code type correctly. So HWE in instrumented Java code is interpreted as HWE in native code.
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