+++ /dev/null
-//===- RemoteTarget.h - LLVM Remote process JIT execution ----------------===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// Definition of the RemoteTarget class which executes JITed code in a
-// separate address range from where it was built.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_TOOLS_LLI_REMOTETARGET_H
-#define LLVM_TOOLS_LLI_REMOTETARGET_H
-
-#include "llvm/ADT/SmallVector.h"
-#include "llvm/ADT/StringRef.h"
-#include "llvm/Support/DataTypes.h"
-#include "llvm/Support/Memory.h"
-#include <stdlib.h>
-#include <string>
-
-namespace llvm {
-
-class RemoteTarget {
- bool IsRunning;
-
- typedef SmallVector<sys::MemoryBlock, 16> AllocMapType;
- AllocMapType Allocations;
-
-protected:
- std::string ErrorMsg;
-
-public:
- StringRef getErrorMsg() const { return ErrorMsg; }
-
- /// Allocate space in the remote target address space.
- ///
- /// @param Size Amount of space, in bytes, to allocate.
- /// @param Alignment Required minimum alignment for allocated space.
- /// @param[out] Address Remote address of the allocated memory.
- ///
- /// @returns True on success. On failure, ErrorMsg is updated with
- /// descriptive text of the encountered error.
- virtual bool allocateSpace(size_t Size,
- unsigned Alignment,
- uint64_t &Address);
-
- bool isAllocatedMemory(uint64_t Address, uint32_t Size) {
- uint64_t AddressEnd = Address + Size;
- for (AllocMapType::const_iterator I = Allocations.begin(),
- E = Allocations.end();
- I != E; ++I) {
- if (Address >= (uint64_t)I->base() &&
- AddressEnd <= (uint64_t)I->base() + I->size())
- return true;
- }
- return false;
- }
-
- /// Load data into the target address space.
- ///
- /// @param Address Destination address in the target process.
- /// @param Data Source address in the host process.
- /// @param Size Number of bytes to copy.
- ///
- /// @returns True on success. On failure, ErrorMsg is updated with
- /// descriptive text of the encountered error.
- virtual bool loadData(uint64_t Address,
- const void *Data,
- size_t Size);
-
- /// Load code into the target address space and prepare it for execution.
- ///
- /// @param Address Destination address in the target process.
- /// @param Data Source address in the host process.
- /// @param Size Number of bytes to copy.
- ///
- /// @returns True on success. On failure, ErrorMsg is updated with
- /// descriptive text of the encountered error.
- virtual bool loadCode(uint64_t Address,
- const void *Data,
- size_t Size);
-
- /// Execute code in the target process. The called function is required
- /// to be of signature int "(*)(void)".
- ///
- /// @param Address Address of the loaded function in the target
- /// process.
- /// @param[out] RetVal The integer return value of the called function.
- ///
- /// @returns True on success. On failure, ErrorMsg is updated with
- /// descriptive text of the encountered error.
- virtual bool executeCode(uint64_t Address,
- int &RetVal);
-
- /// Minimum alignment for memory permissions. Used to separate code and
- /// data regions to make sure data doesn't get marked as code or vice
- /// versa.
- ///
- /// @returns Page alignment return value. Default of 4k.
- virtual unsigned getPageAlignment() { return 4096; }
-
- /// Start the remote process.
- virtual bool create();
-
- /// Terminate the remote process.
- virtual void stop();
-
- RemoteTarget() : IsRunning(false), ErrorMsg("") {}
- virtual ~RemoteTarget() { if (IsRunning) stop(); }
-private:
- // Main processing function for the remote target process. Command messages
- // are received on file descriptor CmdFD and responses come back on OutFD.
- static void doRemoteTargeting(int CmdFD, int OutFD);
-};
-
-} // end namespace llvm
-
-#endif