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57 lines
979 B
57 lines
979 B
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#include "Utils.h"
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namespace dev
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{
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namespace eth
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{
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namespace jit
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{
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u256 llvm2eth(i256 _i)
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{
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u256 u = 0;
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u |= _i.d;
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u <<= 64;
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u |= _i.c;
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u <<= 64;
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u |= _i.b;
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u <<= 64;
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u |= _i.a;
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return u;
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}
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i256 eth2llvm(u256 _u)
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{
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i256 i;
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u256 mask = 0xFFFFFFFFFFFFFFFF;
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i.a = static_cast<uint64_t>(_u & mask);
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_u >>= 64;
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i.b = static_cast<uint64_t>(_u & mask);
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_u >>= 64;
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i.c = static_cast<uint64_t>(_u & mask);
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_u >>= 64;
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i.d = static_cast<uint64_t>(_u & mask);
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return i;
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}
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u256 readPushData(const byte*& _curr, const byte* _end)
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{
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auto pushInst = *_curr;
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assert(Instruction(pushInst) >= Instruction::PUSH1 && Instruction(pushInst) <= Instruction::PUSH32);
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auto numBytes = pushInst - static_cast<size_t>(Instruction::PUSH1) + 1;
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u256 value;
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++_curr; // Point the data
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for (decltype(numBytes) i = 0; i < numBytes; ++i)
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{
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byte b = (_curr != _end) ? *_curr++ : 0;
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value <<= 8;
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value |= b;
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}
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--_curr; // Point the last real byte read
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return value;
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}
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}
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}
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}
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