minor fixes discovered during actual impl
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aece47d7d2
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1 changed files with 40 additions and 11 deletions
49
src/main.cpp
49
src/main.cpp
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@ -57,6 +57,17 @@ bool checkInvariantTSC(){ //Generic
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return iTSC;
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}
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bool checkRDTSCP(){ //Generic
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uint64_t rdx;
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asm volatile (".intel_syntax noprefix\t\n" \
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"mov eax, 0x80000001\t\n" \
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// 080000007h\t\n"
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"cpuid\t\n" : "=d" (rdx) );
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bool RDTSCP = rdx & (1<<27);
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//"and edx, 10000000\n")
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return RDTSCP;
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}
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/*
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1er comentario: https://community.intel.com/t5/Software-Tuning-Performance/TSC-frequency-computation/m-p/1193432
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@ -77,12 +88,13 @@ ECX Bits 31-00: An unsigned integer which is the nominal frequency of the core c
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EDX Bits 31-00: Reserved = 0.
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*/
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char* AMDMeCagoEnTusPutosMuertos () {
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/*
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* Extended name on AMD systems when using 8000_002-4. 8000_0000 for Extpagequant/vendor. Hijos de puta.
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* Now parsing 0H for standard brand name
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*/
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char* palabritas = (char*)malloc(sizeof(char) * 12);
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char* palabritas = (char*)malloc(sizeof(char) * 13);
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uint8_t siguienteLetra = 0;
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//uint64_t regs[4]; //rax rbx, rcx, rdx; Was used for Extended name/vendor
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uint64_t regs[3];//rbx, rcx, rdx;
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@ -90,13 +102,13 @@ char* AMDMeCagoEnTusPutosMuertos () {
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"mov eax, 0x0\t\n" \
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"cpuid\t\n" : "=b" (regs[0]), "=c" (regs[2]), "=d" (regs[1]) );
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int byte = 0;
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for (int reg = 0; reg < 4; reg++, byte = 0){
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for (int reg = 0; reg < 3; reg++, byte = 0){
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char* charifiedReg = (char*)®s[reg];
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for(; byte < 4; byte++, siguienteLetra++ ){
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palabritas[siguienteLetra] = charifiedReg[byte];
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}
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}
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palabritas[(siguienteLetra + 1)] = '\0';
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palabritas[siguienteLetra] = '\0';
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return palabritas;
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}
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@ -110,11 +122,13 @@ bool AMDJoderMET(){
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}
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int16_t checkFrequencyTSC(uint64_t* freq){
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//la idea era hacerla todo aqui; este primero mira el num de pags
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if (freq == nullptr) return -1;
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uint64_t raxde;
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asm volatile ( ".intel_syntax noprefix\t\n" \
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"mov eax, 0x0\t\n" \
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"cpuid\t\n" : "=a" (raxde) );
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log_debugcpp("raxo " << raxde);
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if (raxde < 15) {
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//check tsc existence??????
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@ -135,10 +149,12 @@ int16_t checkFrequencyTSC(uint64_t* freq){
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"mov eax, 0x15\t\n" \
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"cpuid\t\n" : "=a" (raxde), "=b" (rbxnum), "=c" (rcxhz) );
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//"rdtscp\n" : "=a" (raxlo), "=d" (rdxho));
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log_debugcpp("hmm " << raxde << " " << rbxnum << " " << rcxhz);
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if (rbxnum == 0 || rcxhz == 0) return -2;
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//also 18.17.4 Invariant Time-Keepin Volume 3 Intel
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uint64_t TSCFreq = (rcxhz * rbxnum)/raxde;
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*freq = TSCFreq;
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log_debugcpp("raxo " << TSCFreq << " " << *freq);
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return 0;
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}
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@ -160,7 +176,7 @@ uint64_t rdtscp(uint64_t* logicore = nullptr ) {
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"rdtscp\t\n"
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"lfence\t\n": "=a" (raxlo), "=d" (rdxho), "=c" (rcx) );
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//"rdtscp\n" : "=a" (raxlo), "=d" (rdxho));
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if (logicore == nullptr) *logicore = rcx;
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if (logicore != nullptr) *logicore = rcx;
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return (rdxho << 32) + raxlo; //|
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}
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@ -214,7 +230,10 @@ uint64_t estimandoFreq(){
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&longestDataSize, // longest value data
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NULL, // security descriptor
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NULL); // last write time
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if(status != ERROR_SUCCESS) return -2;
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if(status != ERROR_SUCCESS) {
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RegCloseKey(key);
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return -2;
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}
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dataLen = sizeof(REG_QWORD) * (longestDataSize);
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dataContent = (LPBYTE)malloc(dataLen);
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@ -234,7 +253,10 @@ uint64_t estimandoFreq(){
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&dataLen
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);
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if(status != ERROR_SUCCESS) return -3;
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if(status != ERROR_SUCCESS) {
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RegCloseKey(key);
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return -3
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}
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if (CSTR_EQUAL == CompareStringEx(
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LOCALE_NAME_INVARIANT,
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@ -265,13 +287,17 @@ uint64_t estimandoFreq(){
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LPDWORD PMHz = (LPDWORD)dataContent;
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DWORD MHz = *PMHz;
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free(dataContent);
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RegCloseKey(key);
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return MHz * 1000000;
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//break;
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}
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}
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return -4;
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if(status != ERROR_SUCCESS) {
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RegCloseKey(key);
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return -4
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}
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}
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#endif
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@ -285,15 +311,18 @@ int main(int argc, char** argv){
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uint64_t isItActually32GHz = estimandoFreq();
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log_debugcpp("ayo we found " << isItActually32GHz << " flash knuckle");
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}
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int64_t juas = getFreqFromReg();
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log_debugcpp("JODER " << juas);
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//iwintewel
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//Cordura
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int16_t result;
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uint64_t tf = 0;
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uint64_t* TSCFreq = &tf;
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//uint64_t* TSCFreq = &tf;
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bool iTSC = checkInvariantTSC();
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result = checkFrequencyTSC(TSCFreq);
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bool RDTSC = checkRDTSCP();
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result = checkFrequencyTSC(&tf);
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log_debugcpp("INTEL YO HOW WE DOIN " << tf << result);
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if (iTSC && !result) {
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uint64_t test = rdtsc();
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log_debugcpp(test);
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