https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=5453
--- Comment #1 from Stephen Fisher <steve@xxxxxxxxxxxxxxxxxx> 2010-11-30 15:39:43 MST ---
Thanks for the report. I'm responding so fast because I was recently working
on this part of the Wireshark source code and thus have an interest in it :).
We show the 32/64 bit version of Windows using the GetSystemInfo() Windows API
call, and display it according to the value of the wProcessorArchitecture:
if (system_info.wProcessorArchitecture == PROCESSOR_ARCHITECTURE_AMD64)
g_string_append(str, "64-bit ");
else if (system_info.wProcessorArchitecture == PROCESSOR_ARCHITECTURE_INTEL)
g_string_append(str, "32-bit ");
The definition of these values, according to Microsoft are:
PROCESSOR_ARCHITECTURE_AMD64 x64 (AMD or Intel)
PROCESSOR_ARCHITECTURE_INTEL x86
(from http://msdn.microsoft.com/en-us/library/ms724958%28VS.85%29.aspx)
Since you're using a Core2 processor (thanks for the screen shot), that should
show up as and cause us to display "64-bit" by the Windows version.
I see the problem now: because Wireshark is 32-bit, it's being run under
"WOW64" (x86 emulator for 64-bit Windows), so the reported processor is being
faked. We need to use the GetnativeSystemInfo() function instead
(http://msdn.microsoft.com/en-us/library/ms724340%28v=VS.85%29.aspx).
I'll work up some code changes.
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