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#include "memtester.h"
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#include <socexplorerengine.h>
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#include <socexplorerproxy.h>
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MemTester::MemTester(QObject* parent)
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:QObject(parent)
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{
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}
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MemTester::~MemTester()
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{
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}
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unsigned int p_pow2(unsigned int v)
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{
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static const char LogTable256[256] =
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{
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#define LT(n) n, n, n, n, n, n, n, n, n, n, n, n, n, n, n, n
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-1, 0, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3,
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LT(4), LT(5), LT(5), LT(6), LT(6), LT(6), LT(6),
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LT(7), LT(7), LT(7), LT(7), LT(7), LT(7), LT(7), LT(7)
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};
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unsigned int r; // r will be lg(v)
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register unsigned int t, tt; // temporaries
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if (tt = v >> 16)
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{
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r = (t = tt >> 8) ? 24 + LogTable256[t] : 16 + LogTable256[tt];
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}
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else
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{
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r = (t = v >> 8) ? 8 + LogTable256[t] : LogTable256[v];
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}
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return r;
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}
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unsigned int MemTester::measureMemSize(socexplorerplugin *plugin, unsigned int address, unsigned int maxSize)
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{
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unsigned int curVal=1,testAddress=address;
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unsigned int size=0;
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if(Q_UNLIKELY(!plugin || !plugin->isConnected()))return 0;
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plugin->Write(&curVal,1,testAddress);
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plugin->Read(&curVal,1,testAddress);
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if(Q_UNLIKELY(curVal!=1))
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return size;
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unsigned int max= p_pow2((0xFFFFFFFFFFFFFFFF - address))+1;
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register unsigned int maxSizeLg=p_pow2(maxSize)-1;
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if(max>maxSizeLg)
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max=maxSizeLg;
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if(max>32)max=32;
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for(size=2;size<max;size++) //check each address bit
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{
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testAddress = (unsigned int)(address+(1<<size));
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curVal = (unsigned int)(1<<size);
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plugin->Write(&curVal,1,testAddress);
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plugin->Read(&curVal,1,testAddress);
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if((unsigned int)curVal!=(unsigned int)(1<<size))
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return (1<<(size));
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plugin->Read(&curVal,1,address);
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if((curVal==(unsigned int)(1<<size)) && (size!=0))
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return (1<<(size));
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}
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return (1<<(size+1));
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}
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unsigned int MemTester::measureMemSize(const QString &plugin, unsigned int address, unsigned int maxSize)
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{
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return measureMemSize(socexplorerproxy::findPlugin(plugin),address,maxSize);
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}
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