DTraceAllocProbes in x86-64 templateTable?

Jeremy Manson jeremymanson at google.com
Thu Feb 4 19:03:44 PST 2010


This has seriously gone unfixed for two years?

Jeremy

On Thu, Feb 4, 2010 at 6:24 PM, David Holmes - Sun Microsystems
<David.Holmes at sun.com> wrote:
> Known bug: 6587322
>
> Cheers,
> David
>
> Keith McGuigan said the following on 02/05/10 12:13:
>>
>> Jeremy Manson wrote:
>>>
>>> Hi folks,
>>>
>>> I noticed that the call to DTraceAllocProbes in the 64-bit x86
>>> templateTable is directly after a jump instruction that jumps over it.
>>>  I don't have dtrace to check, but that can't be right, can it?
>>>
>>> It's line 3245 of:
>>>
>>>
>>> http://hg.openjdk.java.net/jdk7/hotspot-comp-gate/hotspot/file/c028504fdaa6/src/cpu/x86/vm/templateTable_x86_64.cpp
>>>
>>> The 32-bit version appears to have this code correctly placed above the
>>> jmp.
>>
>> Yes, that looks wrong.  Good catch.  I'll verify w/dtrace that this is
>> actually wrong and file a bug if so (which I'm sure it will be).
>>
>> --
>> - Keith
>


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