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https://github.com/c64scene-ar/llvm-6502.git
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bd199fb114
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5126 91177308-0d34-0410-b5e6-96231b3b80d8
57 lines
1.9 KiB
C++
57 lines
1.9 KiB
C++
//===- Interpreter.cpp - Top-Level LLVM Interpreter Implementation --------===//
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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/Target/TargetMachineImpls.h"
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/// createInterpreter - Create a new interpreter object. This can never fail.
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///
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ExecutionEngine *ExecutionEngine::createInterpreter(Module *M,
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unsigned Config,
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bool DebugMode,
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bool TraceMode) {
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return new Interpreter(M, Config, DebugMode, TraceMode);
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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, unsigned Config,
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bool DebugMode, bool TraceMode)
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: ExecutionEngine(M), ExitCode(0), Debug(DebugMode), Trace(TraceMode),
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CurFrame(-1), TD("lli", (Config & TM::EndianMask) == TM::LittleEndian,
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1, 4,
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(Config & TM::PtrSizeMask) == TM::PtrSize64 ? 8 : 4,
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(Config & TM::PtrSizeMask) == TM::PtrSize64 ? 8 : 4) {
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setTargetData(TD);
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// Initialize the "backend"
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initializeExecutionEngine();
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initializeExternalMethods();
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CW.setModule(M); // Update Writer
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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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int Interpreter::run(const std::string &MainFunction,
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const std::vector<std::string> &Args) {
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// Start interpreter into the main function...
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//
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if (!callMainMethod(MainFunction, Args) && !Debug) {
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// If not in debug mode and if the call succeeded, run the code now...
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run();
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}
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// If debug mode, allow the user to interact... also, if the user pressed
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// ctrl-c or execution hit an error, enter the event loop...
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if (Debug || isStopped())
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handleUserInput();
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return ExitCode;
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}
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