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Interpreter with bytecode

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Fixed some undefined behavior with signed types
Fixed different results on big endian systems
Removed unused code files
Restored FNEG_R instructions
Updated documentation
This commit is contained in:
tevador
2019-02-09 15:45:26 +01:00
parent a586751f6b
commit 32d827d0a6
41 changed files with 1517 additions and 3621 deletions
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src/VirtualMachine.cpp
+54 -14
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@@ -23,32 +23,72 @@ along with RandomX. If not, see<http://www.gnu.org/licenses/>.
#include "blake2/blake2.h"
#include <cstring>
#include <iomanip>
#include "intrinPortable.h"
std::ostream& operator<<(std::ostream& os, const RandomX::RegisterFile& rf) {
for (int i = 0; i < RandomX::RegistersCount; ++i)
os << std::hex << "r" << i << " = " << rf.r[i].u64 << std::endl << std::dec;
os << std::hex << "r" << i << " = " << rf.r[i] << std::endl << std::dec;
for (int i = 0; i < RandomX::RegistersCount; ++i)
os << std::hex << "f" << i << " = " << rf.f[i].hi.u64 << " (" << rf.f[i].hi.f64 << ")" << std::endl
<< " = " << rf.f[i].lo.u64 << " (" << rf.f[i].lo.f64 << ")" << std::endl << std::dec;
os << std::hex << "f" << i << " = " << *(uint64_t*)&rf.f[i].hi << " (" << rf.f[i].hi << ")" << std::endl
<< " = " << *(uint64_t*)&rf.f[i].lo << " (" << rf.f[i].lo << ")" << std::endl << std::dec;
return os;
}
namespace RandomX {
constexpr int mantissaSize = 52;
constexpr int exponentSize = 11;
constexpr uint64_t mantissaMask = (1ULL << mantissaSize) - 1;
constexpr uint64_t exponentMask = (1ULL << exponentSize) - 1;
constexpr int exponentBias = 1023;
static inline uint64_t getSmallPositiveFloatBits(uint64_t entropy) {
auto exponent = entropy >> 59; //0..31
auto mantissa = entropy & mantissaMask;
exponent += exponentBias;
exponent &= exponentMask;
exponent <<= mantissaSize;
return exponent | mantissa;
}
VirtualMachine::VirtualMachine() {
mem.ds.dataset = nullptr;
}
void VirtualMachine::getResult(void* scratchpad, size_t scratchpadSize, void* out) {
constexpr size_t smallStateLength = sizeof(RegisterFile) / sizeof(uint64_t) + 8;
alignas(16) uint64_t smallState[smallStateLength];
memcpy(smallState, &reg, sizeof(RegisterFile));
if (scratchpadSize > 0) {
hashAes1Rx4<false>(scratchpad, scratchpadSize, smallState + 24);
}
else {
memset(smallState + 24, 0, 64);
}
blake2b(out, ResultSize, smallState, sizeof(smallState), nullptr, 0);
void VirtualMachine::resetRoundingMode() {
initFpu();
}
void VirtualMachine::initialize() {
store64(&reg.a[0].lo, getSmallPositiveFloatBits(program.getEntropy(0)));
store64(&reg.a[0].hi, getSmallPositiveFloatBits(program.getEntropy(1)));
store64(&reg.a[1].lo, getSmallPositiveFloatBits(program.getEntropy(2)));
store64(&reg.a[1].hi, getSmallPositiveFloatBits(program.getEntropy(3)));
store64(&reg.a[2].lo, getSmallPositiveFloatBits(program.getEntropy(4)));
store64(&reg.a[2].hi, getSmallPositiveFloatBits(program.getEntropy(5)));
store64(&reg.a[3].lo, getSmallPositiveFloatBits(program.getEntropy(6)));
store64(&reg.a[3].hi, getSmallPositiveFloatBits(program.getEntropy(7)));
mem.ma = program.getEntropy(8) & CacheLineAlignMask;
mem.mx = program.getEntropy(10);
auto addressRegisters = program.getEntropy(12);
readReg0 = 0 + (addressRegisters & 1);
addressRegisters >>= 1;
readReg1 = 2 + (addressRegisters & 1);
addressRegisters >>= 1;
readReg2 = 4 + (addressRegisters & 1);
addressRegisters >>= 1;
readReg3 = 6 + (addressRegisters & 1);
}
template<bool softAes>
void VirtualMachine::getResult(void* scratchpad, size_t scratchpadSize, void* outHash) {
if (scratchpadSize > 0) {
hashAes1Rx4<false>(scratchpad, scratchpadSize, &reg.a);
}
blake2b(outHash, ResultSize, &reg, sizeof(RegisterFile), nullptr, 0);
}
template void VirtualMachine::getResult<false>(void* scratchpad, size_t scratchpadSize, void* outHash);
template void VirtualMachine::getResult<true>(void* scratchpad, size_t scratchpadSize, void* outHash);
}