mirror of
https://github.com/RPCSX/llvm.git
synced 2024-12-13 23:18:51 +00:00
abb027cf41
`lli -march=x86' or `lli -march=sparc' will forcefully select the JIT even on a different platform. Running lli without the -march option will select the JIT for the platform that it's currently running on. Pro: can test Sparc JIT (debug printing mode) on X86 -- faster to compile/link LLVM source base to test changes. Con: Linking lli on x86 now pulls in all the Sparc libs -> longer link time (but X86 can bear it, right?) In the future, perhaps this should be a ./configure option to enable/disable target JITting... git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6360 91177308-0d34-0410-b5e6-96231b3b80d8
82 lines
2.5 KiB
C++
82 lines
2.5 KiB
C++
//===-- VM.h - Definitions for Virtual Machine ------------------*- C++ -*-===//
|
|
//
|
|
// This file defines the top-level Virtual Machine data structure.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef VM_H
|
|
#define VM_H
|
|
|
|
#include "../ExecutionEngine.h"
|
|
#include "llvm/PassManager.h"
|
|
#include <map>
|
|
|
|
class Function;
|
|
class GlobalValue;
|
|
class Constant;
|
|
class TargetMachine;
|
|
class MachineCodeEmitter;
|
|
|
|
class VM : public ExecutionEngine {
|
|
TargetMachine &TM; // The current target we are compiling to
|
|
PassManager PM; // Passes to compile a function
|
|
MachineCodeEmitter *MCE; // MCE object
|
|
|
|
// FunctionRefs - A mapping between addresses that refer to unresolved
|
|
// functions and the LLVM function object itself. This is used by the fault
|
|
// handler to lazily patch up references...
|
|
//
|
|
std::map<void*, Function*> FunctionRefs;
|
|
|
|
public:
|
|
VM(Module *M, TargetMachine *tm);
|
|
~VM();
|
|
|
|
/// run - Start execution with the specified function and arguments.
|
|
///
|
|
virtual int run(const std::string &FnName,
|
|
const std::vector<std::string> &Args);
|
|
|
|
void addFunctionRef(void *Ref, Function *F) {
|
|
FunctionRefs[Ref] = F;
|
|
}
|
|
|
|
const std::string &getFunctionReferencedName(void *RefAddr);
|
|
|
|
void *resolveFunctionReference(void *RefAddr);
|
|
|
|
/// getPointerToNamedFunction - This method returns the address of the
|
|
/// specified function by using the dlsym function call. As such it is only
|
|
/// useful for resolving library symbols, not code generated symbols.
|
|
///
|
|
void *getPointerToNamedFunction(const std::string &Name);
|
|
|
|
// CompilationCallback - Invoked the first time that a call site is found,
|
|
// which causes lazy compilation of the target function.
|
|
//
|
|
static void CompilationCallback();
|
|
|
|
/// runAtExitHandlers - Before exiting the program, at_exit functions must be
|
|
/// called. This method calls them.
|
|
///
|
|
static void runAtExitHandlers();
|
|
|
|
private:
|
|
static MachineCodeEmitter *createX86Emitter(VM &V);
|
|
static MachineCodeEmitter *createSparcEmitter(VM &V);
|
|
void setupPassManager();
|
|
void *getPointerToFunction(const Function *F);
|
|
|
|
void registerCallback();
|
|
|
|
/// emitStubForFunction - This method is used by the JIT when it needs to emit
|
|
/// the address of a function for a function whose code has not yet been
|
|
/// generated. In order to do this, it generates a stub which jumps to the
|
|
/// lazy function compiler, which will eventually get fixed to call the
|
|
/// function directly.
|
|
///
|
|
void *emitStubForFunction(const Function &F);
|
|
};
|
|
|
|
#endif
|