mirror of
https://github.com/ethereum/go-ethereum.git
synced 2026-07-19 19:30:44 +00:00
PUSH instruction implementation
This commit is contained in:
Paweł Bylica
parent
d8430db13c
commit
4266ce54fc
3 changed files with 104 additions and 43 deletions
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@ -3,6 +3,8 @@
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#include <llvm/IR/IRBuilder.h>
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#include <llvm/IR/IRBuilder.h>
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#include <libevmface/Instruction.h>
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#include "Stack.h"
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#include "Stack.h"
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namespace evmcc
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namespace evmcc
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@ -37,64 +39,87 @@ std::unique_ptr<llvm::Module> Compiler::compile(const dev::bytes& bytecode)
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using namespace llvm;
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using namespace llvm;
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auto& context = getGlobalContext();
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auto& context = getGlobalContext();
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auto module = std::make_unique<Module>("main", context);
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auto module = std::make_unique<Module>("main", context);
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IRBuilder<> builder(context);
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IRBuilder<> builder(context);
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// Create globals for memory, memory size, stack and stack top
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auto memory = new GlobalVariable(*module, Types.word8ptr, false,
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GlobalValue::LinkageTypes::PrivateLinkage,
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Constant::getNullValue(Types.word8ptr), "memory");
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auto memSize = new GlobalVariable(*module, Types.size, false,
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GlobalValue::LinkageTypes::PrivateLinkage,
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ConstantInt::get(Types.size, 0), "memsize");
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auto stack2 = new GlobalVariable(*module, Types.word256arr, false,
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GlobalValue::LinkageTypes::PrivateLinkage,
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ConstantAggregateZero::get(Types.word256arr), "stack");
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auto stackTop2 = new GlobalVariable(*module, Types.size, false,
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GlobalValue::LinkageTypes::PrivateLinkage,
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ConstantInt::get(Types.size, 0), "stackTop");
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// Create value for void* malloc(size_t)
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auto mallocVal = Function::Create(FunctionType::get(Types.word8ptr, { Types.size }, false),
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GlobalValue::LinkageTypes::ExternalLinkage, "malloc", module.get());
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// Create main function
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// Create main function
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FunctionType* funcType = FunctionType::get(llvm::Type::getInt32Ty(context), false);
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auto mainFuncType = FunctionType::get(llvm::Type::getInt32Ty(context), false);
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Function* mainFunc = Function::Create(funcType, Function::ExternalLinkage, "main", module.get());
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auto mainFunc = Function::Create(mainFuncType, Function::ExternalLinkage, "main", module.get());
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BasicBlock* entryBlock = BasicBlock::Create(context, "entry", mainFunc);
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auto entryBlock = BasicBlock::Create(context, "entry", mainFunc);
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builder.SetInsertPoint(entryBlock);
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builder.SetInsertPoint(entryBlock);
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// Initialize memory with call to malloc, update memsize
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// Init stack
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std::vector<Value*> mallocMemArgs = { ConstantInt::get(Types.size, 100) };
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auto mallocMemCall = builder.CreateCall(mallocVal, mallocMemArgs, "malloc_mem");
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builder.CreateStore(mallocMemCall, memory);
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builder.CreateStore(ConstantInt::get(Types.size, 100), memSize);
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auto stack = Stack(builder, module.get());
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auto stack = Stack(builder, module.get());
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uint64_t words[] = { 1, 2, 3, 4 };
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for (auto pc = bytecode.cbegin(); pc != bytecode.cend(); ++pc)
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auto val = llvm::APInt(256, 4, words);
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{
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auto c = ConstantInt::get(Types.word256, val);
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using dev::eth::Instruction;
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stack.push(c);
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auto inst = static_cast<Instruction>(*pc);
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stack.push(ConstantInt::get(Types.word256, 0x1122334455667788));
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switch (inst)
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{
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case Instruction::PUSH1:
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case Instruction::PUSH2:
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case Instruction::PUSH3:
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case Instruction::PUSH4:
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case Instruction::PUSH5:
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case Instruction::PUSH6:
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case Instruction::PUSH7:
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case Instruction::PUSH8:
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case Instruction::PUSH9:
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case Instruction::PUSH10:
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case Instruction::PUSH11:
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case Instruction::PUSH12:
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case Instruction::PUSH13:
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case Instruction::PUSH14:
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case Instruction::PUSH15:
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case Instruction::PUSH16:
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case Instruction::PUSH17:
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case Instruction::PUSH18:
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case Instruction::PUSH19:
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case Instruction::PUSH20:
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case Instruction::PUSH21:
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case Instruction::PUSH22:
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case Instruction::PUSH23:
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case Instruction::PUSH24:
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case Instruction::PUSH25:
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case Instruction::PUSH26:
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case Instruction::PUSH27:
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case Instruction::PUSH28:
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case Instruction::PUSH29:
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case Instruction::PUSH30:
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case Instruction::PUSH31:
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case Instruction::PUSH32:
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{
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auto numBytes = static_cast<size_t>(inst) - static_cast<size_t>(Instruction::PUSH1) + 1;
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auto value = llvm::APInt(256, 0);
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for (decltype(numBytes) i = 0; i < numBytes; ++i) // TODO: Use pc as iterator
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{
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++pc;
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value <<= 8;
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value |= *pc;
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}
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auto c = builder.getInt(value);
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stack.push(c);
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break;
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}
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}
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}
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auto top = stack.top();
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//uint64_t words[] = { 1, 2, 3, 4 };
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stack.push(top); // dup
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//auto val = llvm::APInt(256, 4, words);
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//auto c = ConstantInt::get(Types.word256, val);
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stack.pop();
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//stack.push(c);
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//stack.push(ConstantInt::get(Types.word256, 0x1122334455667788));
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//auto top = stack.top();
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//stack.push(top); // dup
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/*
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//stack.pop();
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std::vector<Value*> mallocStackArgs = { ConstantInt::get(sizeTy, 200) };
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auto mallocStackCall = builder.CreateCall(mallocVal, mallocStackArgs, "malloc_stack");
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auto mallocCast = builder.CreatePointerBitCastOrAddrSpaceCast(mallocStackCall, int256ptr);
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builder.CreateStore(mallocCast, stackVal);
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*/
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builder.CreateRet(ConstantInt::get(Type::getInt32Ty(context), 13));
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builder.CreateRet(ConstantInt::get(Type::getInt32Ty(context), 0));
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return module;
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return module;
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}
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}
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1
evmcc/bytecode/push_test.evm
Normal file
1
evmcc/bytecode/push_test.evm
Normal file
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@ -0,0 +1 @@
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35
evmcc/lll/push_test.lll
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35
evmcc/lll/push_test.lll
Normal file
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@ -0,0 +1,35 @@
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(asm
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101 ;; PUSH1
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2002 ;; PUSH2
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303303 ;; PUSH3
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40444404 ;; PUSH4
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50555555505 ;; PUSH5
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60666666666606
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7777777777777777
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888888888888888888
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99999999999999999999
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10000000000000000000001
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10111111111111111111111101
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2022222222222222222222222202
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303333333333333333333333333303
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4044444444444444444444444444444404
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505555555555555555555555555555555505
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60666666666666666666666666666666666606
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7077777777777777777777777777777777777707
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808888888888888888888888888888888888888808
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90999999999999999999999999999999999999999909
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100000000000000000000000000000000000000000000001
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10111111111111111111111111111111111111111111111101
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2022222222222222222222222222222222222222222222222202
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303333333333333333333333333333333333333333333333333303
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40444444444444444444444444444444444444444444444444444404
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50555555555555555555555555555555555555555555555555555555505
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6066666666666666666666666666666666666666666666666666666666606
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707777777777777777777777777777777777777777777777777777777777707
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808888888888888888888888888888888888888888888888888888888888888808
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90999999999999999999999999999999999999999999999999999999999999999909
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100000000000000000000000000000000000000000000000000000000000000000000001
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10111111111111111111111111111111111111111111111111111111111111111111111101
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2022222222222222222222222222222222222222222222222222222222222222222222222202 ;; PUSH32
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)
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