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70 lines
1.3 KiB
70 lines
1.3 KiB
10 years ago
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#include "Stack.h"
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#include "Runtime.h"
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#include <llvm/IR/Function.h>
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#include <llvm/IR/TypeBuilder.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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Stack::Stack(llvm::IRBuilder<>& _builder)
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: CompilerHelper(_builder)
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{
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auto i256Ty = m_builder.getIntNTy(256);
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auto i256PtrTy = i256Ty->getPointerTo();
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m_arg = m_builder.CreateAlloca(i256Ty, nullptr, "stack.retVal");
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using namespace llvm;
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using Linkage = GlobalValue::LinkageTypes;
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auto module = getModule();
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m_push = Function::Create(FunctionType::get(m_builder.getVoidTy(), i256PtrTy, false), Linkage::ExternalLinkage, "stack_push", module);
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m_pop = Function::Create(FunctionType::get(m_builder.getVoidTy(), i256PtrTy, false), Linkage::ExternalLinkage, "stack_pop", module);
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}
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Stack::~Stack()
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{}
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llvm::Instruction* Stack::popWord()
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{
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m_builder.CreateCall(m_pop, m_arg);
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return m_builder.CreateLoad(m_arg);
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}
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void Stack::pushWord(llvm::Value* _word)
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{
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m_builder.CreateStore(_word, m_arg);
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m_builder.CreateCall(m_push, m_arg);
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}
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}
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}
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}
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extern "C"
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{
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using namespace dev::eth::jit;
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EXPORT void stack_pop(i256* _ret)
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{
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auto& stack = Runtime::getStack();
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assert(stack.size() > 0);
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*_ret = stack.back();
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stack.pop_back();
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}
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EXPORT void stack_push(i256* _word)
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{
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auto& stack = Runtime::getStack();
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stack.push_back(*_word);
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}
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} // extern "C"
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