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#pragma once
#include <clang/AST/ASTConsumer.h>
#include <clang/AST/Attr.h>
#include <clang/AST/Decl.h>
#include <clang/AST/Type.h>
#include <clang/Tooling/Tooling.h>
#include <clang/Tooling/CompilationDatabase.h>
#include <clang/AST/RecursiveASTVisitor.h>
#include <clang/Frontend/FrontendAction.h>
#include <clang/Frontend/CompilerInstance.h>
#include <clang/Tooling/CommonOptionsParser.h>
#include <ios>
#include <llvm/Support/Casting.h>
#include <cstddef>
#include <fstream>
#include <memory>
#include <string>
#include <iostream>
#include <vector>
#include <cstring>
#include <map>
#include "gen.h"
#include "utils.h"
static void ParseParameter(clang::ASTContext* AST, WrapperGenerator* Gen, clang::QualType ParmType, FuncInfo* Func) {
using namespace clang;
(void)AST; (void)Func;
if (ParmType->isFunctionPointerType()) {
auto ProtoType = ParmType->getPointeeType()->getAs<FunctionProtoType>();
for (unsigned i = 0; i < ProtoType->getNumParams(); i++) {
ParseParameter(AST, Gen, ProtoType->getParamType(i), Func);
}
} else if (ParmType->isPointerType()) {
auto PointeeType = ParmType->getPointeeType();
if (PointeeType->isRecordType()) {
if (Gen->records.find(StripTypedef(PointeeType)) == Gen->records.end()) {
auto Record = &Gen->records[StripTypedef(PointeeType)];
if (PointeeType->isUnionType()) {
Record->is_union = true;
}
Record->type = StripTypedef(PointeeType);
Record->decl = PointeeType->getAs<RecordType>()->getDecl();
Record->type_name = Record->decl->getIdentifier() ? Record->decl->getIdentifier()->getName().str() : "<null identifier>";
}
} else if (PointeeType->isPointerType()) {
PointeeType = PointeeType->getPointeeType();
if (PointeeType->isRecordType()) {
if (Gen->records.find(StripTypedef(PointeeType)) == Gen->records.end()) {
auto Record = &Gen->records[StripTypedef(PointeeType)];
if (PointeeType->isUnionType()) {
Record->is_union = true;
}
Record->type = StripTypedef(PointeeType);
Record->decl = PointeeType->getAs<RecordType>()->getDecl();
Record->type_name = Record->decl->getIdentifier() ? Record->decl->getIdentifier()->getName().str() : "<null identifier>";
}
}
}
} else if (ParmType->isRecordType()) {
if (Gen->records.find(StripTypedef(ParmType)) == Gen->records.end()) {
auto Record = &Gen->records[StripTypedef(ParmType)];
if (ParmType->isUnionType()) {
Record->is_union = true;
}
Record->type = StripTypedef(ParmType);
Record->decl = ParmType->getAs<RecordType>()->getDecl();
Record->type_name = Record->decl->getIdentifier() ? Record->decl->getIdentifier()->getName().str() : "<null identifier>";
}
}
}
static void ParseFunction(clang::ASTContext* AST, WrapperGenerator* Gen, clang::FunctionDecl* Decl) {
using namespace clang;
auto Type = Decl->getType().getTypePtr();
auto FuncInfo = &Gen->funcs[Type];
FuncInfo->type = Type;
FuncInfo->func_name = Decl->getNameAsString();
FuncInfo->decl = Decl;
FuncInfo->callback_args.resize(Decl->getNumParams());
if (Decl->getAttr<WeakRefAttr>()) {
FuncInfo->is_weak = true;
}
if (Decl->isVariadic()) {
FuncInfo->is_variadaic = true;
}
for (unsigned i = 0; i < Decl->getNumParams(); i++) {
auto ParmDecl = Decl->getParamDecl(i);
if (ParmDecl->getType()->isFunctionPointerType()) {
FuncInfo->callback_args[i] = ParmDecl->getType().getTypePtr();
FuncInfo->has_callback_arg = true;
} else {
FuncInfo->callback_args[i] = nullptr;
}
ParseParameter(AST, Gen, ParmDecl->getType(), FuncInfo);
}
}
class MyASTVisitor : public clang::RecursiveASTVisitor<MyASTVisitor> {
public:
MyASTVisitor(clang::ASTContext* ctx) : Ctx(ctx) {}
MyASTVisitor(clang::ASTContext* ctx, WrapperGenerator* gen) : Ctx(ctx), Gen(gen) {}
bool VisitFunctionDecl(clang::FunctionDecl* Decl) {
ParseFunction(Ctx, Gen, Decl);
return true;
}
private:
clang::ASTContext* Ctx;
WrapperGenerator* Gen;
};
class MyASTConsumer : public clang::ASTConsumer {
public:
MyASTConsumer(clang::ASTContext* Context, const std::string& libname, const std::string& host_triple, const std::string& guest_triple)
: Visitor(Context, &Generator) {
Generator.Init(libname, host_triple, guest_triple);
}
void HandleTranslationUnit(clang::ASTContext &Ctx) override {
Visitor.TraverseDecl(Ctx.getTranslationUnitDecl());
std::cout << "--------------- Libclangtooling parse complete -----------------\n";
Generator.Prepare(&Ctx);
std::cout << "--------------- Generator prepare complete -----------------\n";
std::ofstream FuncDeclFile("wrapped" + Generator.libname + "_private.h", std::ios::out);
FuncDeclFile << Generator.GenFuncDeclare(&Ctx);
FuncDeclFile.close();
std::ofstream FuncDefineFile("wrapped" + Generator.libname + ".c", std::ios::out);
FuncDefineFile << "#include <stdio.h>\n"
"#include <stdlib.h>\n"
"#include <string.h>\n"
"#define _GNU_SOURCE /* See feature_test_macros(7) */\n"
"#include <dlfcn.h>\n"
"\n"
"#include \"wrappedlibs.h\"\n"
"\n"
"#include \"debug.h\"\n"
"#include \"wrapper.h\"\n"
"#include \"bridge.h\"\n"
"#include \"x64emu.h\"\n"
"#include \"box64context.h\"\n"
"\n"
"const char* " + Generator.libname + "Name = \"" + Generator.libname + "\";\n"
"#define LIBNAME " + Generator.libname + "\n"
"\n"
"#define ADDED_FUNCTIONS() \\\n"
"\n"
"#include \"generated/wrapped" + Generator.libname + "types.h\"\n";
FuncDefineFile << Generator.GenRecordDeclare(&Ctx);
FuncDefineFile << Generator.GenRecordConvert(&Ctx);
FuncDefineFile << Generator.GenCallbackWrap(&Ctx);
FuncDefineFile << Generator.GenFuncDefine(&Ctx);
FuncDefineFile.close();
std::cout << "--------------- Generator gen complete -----------------\n";
}
private:
MyASTVisitor Visitor;
WrapperGenerator Generator;
};
class MyGenAction : public clang::ASTFrontendAction {
public:
MyGenAction(const std::string& libname, const std::string& host_triple, const std::string& guest_triple) :
libname(libname), host_triple(host_triple), guest_triple(guest_triple) {}
std::unique_ptr<clang::ASTConsumer> CreateASTConsumer(clang::CompilerInstance& Compiler, clang::StringRef file) override {
(void)file;
return std::make_unique<MyASTConsumer>(&Compiler.getASTContext(), libname, host_triple, guest_triple);
}
private:
std::string libname;
std::string host_triple;
std::string guest_triple;
};
class MyFrontendActionFactory : public clang::tooling::FrontendActionFactory {
public:
MyFrontendActionFactory(const std::string& libname, const std::string& host_triple, const std::string& guest_triple) :
libname(libname), host_triple(host_triple), guest_triple(guest_triple) {}
private:
std::unique_ptr<clang::FrontendAction> create() override {
return std::make_unique<MyGenAction>(libname, host_triple, guest_triple);
}
private:
std::string libname;
std::string host_triple;
std::string guest_triple;
};
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