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https://github.com/c64scene-ar/llvm-6502.git
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70975eef57
Switch Interpreter and JIT's "run" methods to take a Function and a vector of GenericValues. Move (almost all of) the stuff that constructs a canonical call to main() into lli (new methods "callAsMain", "makeStringVector"). Nuke getCurrentExecutablePath(), enableTracing(), getCurrentFunction(), isStopped(), and many dead decls from interpreter. Add linux strdup() support to interpreter. Make interpreter's atexit handler runner and JIT's runAtExitHandlers() look more alike, in preparation for refactoring. atexit() is spelled "atexit", not "at_exit". git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8366 91177308-0d34-0410-b5e6-96231b3b80d8
89 lines
2.6 KiB
C++
89 lines
2.6 KiB
C++
//===- ExecutionEngine.h - Abstract Execution Engine Interface --*- C++ -*-===//
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//
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// This file defines the abstract interface that implements execution support
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// for LLVM.
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//
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//===----------------------------------------------------------------------===//
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#ifndef EXECUTION_ENGINE_H
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#define EXECUTION_ENGINE_H
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#include <vector>
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#include <string>
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#include <map>
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#include <cassert>
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class Constant;
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class Type;
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class GlobalValue;
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class Function;
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class Module;
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class TargetData;
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union GenericValue;
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class ExecutionEngine {
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Module &CurMod;
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const TargetData *TD;
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protected:
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// GlobalAddress - A mapping between LLVM global values and their actualized
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// version...
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std::map<const GlobalValue*, void *> GlobalAddress;
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void setTargetData(const TargetData &td) {
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TD = &td;
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}
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public:
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ExecutionEngine(Module *M) : CurMod(*M) {
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assert(M && "Module is null?");
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}
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virtual ~ExecutionEngine();
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Module &getModule() const { return CurMod; }
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const TargetData &getTargetData() const { return *TD; }
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/// run - Start execution with the specified function, arguments, and
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/// environment.
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///
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virtual GenericValue run(Function *F,
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const std::vector<GenericValue> &ArgValues) = 0;
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static ExecutionEngine *create (Module *M, bool ForceInterpreter,
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bool TraceMode);
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void addGlobalMapping(const Function *F, void *Addr) {
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void *&CurVal = GlobalAddress[(const GlobalValue*)F];
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assert(CurVal == 0 && "GlobalMapping already established!");
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CurVal = Addr;
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}
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// getPointerToGlobalIfAvailable - This returns the address of the specified
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// global value if it is available, otherwise it returns null.
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//
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void *getPointerToGlobalIfAvailable(const GlobalValue *GV) {
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std::map<const GlobalValue*, void*>::iterator I = GlobalAddress.find(GV);
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return I != GlobalAddress.end() ? I->second : 0;
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}
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// getPointerToGlobal - This returns the address of the specified global
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// value. This may involve code generation if it's a function.
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//
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void *getPointerToGlobal(const GlobalValue *GV);
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// getPointerToFunction - The different EE's represent function bodies in
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// different ways. They should each implement this to say what a function
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// pointer should look like.
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//
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virtual void *getPointerToFunction(Function *F) = 0;
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protected:
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void emitGlobals();
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public: // FIXME: protected: // API shared among subclasses
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GenericValue getConstantValue(const Constant *C);
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void StoreValueToMemory(GenericValue Val, GenericValue *Ptr, const Type *Ty);
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GenericValue LoadValueFromMemory(GenericValue *Ptr, const Type *Ty);
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void InitializeMemory(const Constant *Init, void *Addr);
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};
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#endif
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