mirror of
https://github.com/c64scene-ar/llvm-6502.git
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0b8c9a80f2
into their new header subdirectory: include/llvm/IR. This matches the directory structure of lib, and begins to correct a long standing point of file layout clutter in LLVM. There are still more header files to move here, but I wanted to handle them in separate commits to make tracking what files make sense at each layer easier. The only really questionable files here are the target intrinsic tablegen files. But that's a battle I'd rather not fight today. I've updated both CMake and Makefile build systems (I think, and my tests think, but I may have missed something). I've also re-sorted the includes throughout the project. I'll be committing updates to Clang, DragonEgg, and Polly momentarily. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171366 91177308-0d34-0410-b5e6-96231b3b80d8
99 lines
2.9 KiB
C++
99 lines
2.9 KiB
C++
//===- Interpreter.cpp - Top-Level LLVM Interpreter Implementation --------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the top-level functionality for the LLVM interpreter.
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// This interpreter is designed to be a very simple, portable, inefficient
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// interpreter.
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//
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//===----------------------------------------------------------------------===//
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#include "Interpreter.h"
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#include "llvm/CodeGen/IntrinsicLowering.h"
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#include "llvm/IR/DerivedTypes.h"
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#include "llvm/IR/Module.h"
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#include <cstring>
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using namespace llvm;
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namespace {
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static struct RegisterInterp {
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RegisterInterp() { Interpreter::Register(); }
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} InterpRegistrator;
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}
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extern "C" void LLVMLinkInInterpreter() { }
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/// create - Create a new interpreter object. This can never fail.
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///
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ExecutionEngine *Interpreter::create(Module *M, std::string* ErrStr) {
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// Tell this Module to materialize everything and release the GVMaterializer.
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if (M->MaterializeAllPermanently(ErrStr))
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// We got an error, just return 0
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return 0;
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return new Interpreter(M);
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}
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//===----------------------------------------------------------------------===//
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// Interpreter ctor - Initialize stuff
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//
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Interpreter::Interpreter(Module *M)
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: ExecutionEngine(M), TD(M) {
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memset(&ExitValue.Untyped, 0, sizeof(ExitValue.Untyped));
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setDataLayout(&TD);
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// Initialize the "backend"
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initializeExecutionEngine();
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initializeExternalFunctions();
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emitGlobals();
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IL = new IntrinsicLowering(TD);
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}
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Interpreter::~Interpreter() {
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delete IL;
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}
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void Interpreter::runAtExitHandlers () {
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while (!AtExitHandlers.empty()) {
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callFunction(AtExitHandlers.back(), std::vector<GenericValue>());
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AtExitHandlers.pop_back();
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run();
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}
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}
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/// run - Start execution with the specified function and arguments.
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///
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GenericValue
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Interpreter::runFunction(Function *F,
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const std::vector<GenericValue> &ArgValues) {
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assert (F && "Function *F was null at entry to run()");
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// Try extra hard not to pass extra args to a function that isn't
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// expecting them. C programmers frequently bend the rules and
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// declare main() with fewer parameters than it actually gets
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// passed, and the interpreter barfs if you pass a function more
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// parameters than it is declared to take. This does not attempt to
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// take into account gratuitous differences in declared types,
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// though.
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std::vector<GenericValue> ActualArgs;
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const unsigned ArgCount = F->getFunctionType()->getNumParams();
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for (unsigned i = 0; i < ArgCount; ++i)
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ActualArgs.push_back(ArgValues[i]);
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// Set up the function call.
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callFunction(F, ActualArgs);
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// Start executing the function.
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run();
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return ExitValue;
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}
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