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cis
2012 Jan 22
1
Timing related application crash
...ktop using either the 32 or 64 bit version of WINE I am having
difficulties by getting a "divide by 0 error". There are no other
console messages (such as WINE FIXMEs) before this. After attaching a
debugger (ollydbg) I found the following sequence seems to be the
culprit (simplified to Cish code):
(start @ 0x0041AF35)
CPUID, RDTSC func
CPUID, RDTSC func
QueryPerformanceFrequency(&Frequency);
QueryPerformanceCounter(&PerformanceCount1)
CPUID, RDTSC func
QueryPerformanceCounter(&PerformanceCount2)
CPUID, RDTSC func
do some math related to something
blah = something * Frequ...