Starting ExtVM binary interface

evmcc/Compiler.cpp

@@ -6,6 +6,7 @@
 #include <libevmface/Instruction.h>
 
 #include "Stack.h"
+#include "Ext.h"
 
 namespace evmcc
 {
@@ -56,6 +57,8 @@ std::unique_ptr<llvm::Module> Compiler::compile(const dev::bytes& bytecode)
 	// Init stack
 	auto stack = Stack(builder, module.get());
 
+	auto ext = Ext(builder);
+
 	for (auto pc = bytecode.cbegin(); pc != bytecode.cend(); ++pc)
 	{
 		using dev::eth::Instruction;

evmcc/ExecutionEngine.cpp

@@ -13,6 +13,8 @@
 #include <llvm/Support/PrettyStackTrace.h>
 #include <llvm/Support/Host.h>
 
+#include "Ext.h"
+
 namespace evmcc
 {
 
@@ -66,6 +68,9 @@ int ExecutionEngine::run(std::unique_ptr<llvm::Module> _module)
 	_module.release();	// Successfully created llvm::ExecutionEngine takes ownership of the module
 	exec->finalizeObject();
 
+	auto ext = std::make_unique<dev::eth::ExtVMFace>();
+	Ext::init(std::move(ext));
+
 	auto entryFunc = module->getFunction("main");
 	if (!entryFunc)
 	{

evmcc/Ext.cpp

@@ -0,0 +1,52 @@
+
+#include "Ext.h"
+
+#include <llvm/IR/Function.h>
+#include <llvm/IR/TypeBuilder.h>
+
+#ifdef _MSC_VER
+#define EXPORT __declspec(dllexport)
+#else
+#define EXPORT
+#endif
+
+using namespace llvm;
+using llvm::types::i;
+using Linkage = llvm::GlobalValue::LinkageTypes;
+
+namespace evmcc
+{
+
+std::unique_ptr<dev::eth::ExtVMFace> g_ext;
+
+void Ext::init(std::unique_ptr<dev::eth::ExtVMFace> _ext)
+{
+	g_ext = std::move(_ext);
+}
+
+Ext::Ext(llvm::IRBuilder<>& _builder)
+	: m_builder(_builder)
+{
+	auto module = m_builder.GetInsertBlock()->getParent()->getParent();
+	auto&& ctx = _builder.getContext();
+
+	Function::Create(TypeBuilder<void(i<256>*, i<256>*), true>::get(ctx), Linkage::ExternalLinkage, "ext_store", module);
+	Function::Create(TypeBuilder<void(i<256>*, i<256>*), true>::get(ctx), Linkage::ExternalLinkage, "ext_setStore", module);
+}
+
+extern "C"
+{
+
+EXPORT void ext_store(void* _index, void* _value)
+{
+
+}
+
+EXPORT void ext_setStore(void* _index, void* _value)
+{
+
+}
+
+}
+
+}

evmcc/Ext.h

@@ -0,0 +1,22 @@
+
+#include <llvm/IR/IRBuilder.h>
+
+#include <libevm/ExtVMFace.h>
+
+namespace evmcc
+{
+
+
+
+class Ext
+{
+public:
+	Ext(llvm::IRBuilder<>& _builder);
+	static void init(std::unique_ptr<dev::eth::ExtVMFace> _ext);
+
+private:
+	llvm::IRBuilder<>& m_builder;
+};
+	
+
+}