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From "Pavel Pervov (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HARMONY-5015) [drlvm][jvmti][x86_64] Functions jvmtiGetLocalObject and jvmtiSetLocalObject have to handle compressed references
Date Thu, 25 Oct 2007 07:26:50 GMT

    [ https://issues.apache.org/jira/browse/HARMONY-5015?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12537528
] 

Pavel Pervov commented on HARMONY-5015:
---------------------------------------

AFAIK, JIT's stack holds uncompressed references. JIT only decompress/compress references
on get(static|field) and put(static|field) operations.

As for field modification watch - you may be right, but it need to be checked anyway.


> [drlvm][jvmti][x86_64] Functions jvmtiGetLocalObject and jvmtiSetLocalObject have to
handle compressed references
> -----------------------------------------------------------------------------------------------------------------
>
>                 Key: HARMONY-5015
>                 URL: https://issues.apache.org/jira/browse/HARMONY-5015
>             Project: Harmony
>          Issue Type: Bug
>          Components: DRLVM
>            Reporter: Gregory Shimansky
>            Priority: Minor
>
> Currently these two functions treat references as void* but this isn't true on x86_64
in compressed references mode (currently default). In this mode comparison with NULL has to
be done with managed_null, and references have to be uncompressed when taken from JIT stack,
compressed when put into JIT stack.

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