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+/*
+ * Copyright (c) 2011, Denis Steckelmacher <steckdenis@yahoo.fr>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * * Neither the name of the copyright holder nor the
+ * names of its contributors may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+ * \file cpu/program.h
+ * \brief CPU program
+ */
+
+#ifndef __CPU_PROGRAM_H__
+#define __CPU_PROGRAM_H__
+
+#include "../deviceinterface.h"
+
+namespace llvm
+{
+ class ExecutionEngine;
+ class Module;
+}
+
+namespace Coal
+{
+
+class CPUDevice;
+class Program;
+
+/**
+ * \brief CPU program
+ *
+ * This class implements the \c Coal::DeviceProgram interface for CPU
+ * acceleration.
+ *
+ * It's main purpose is to initialize a \c llvm::JIT object to run LLVM bitcode,
+ * in \c initJIT().
+ */
+class CPUProgram : public DeviceProgram
+{
+ public:
+ /**
+ * \brief Constructor
+ * \param device CPU device to which this program is attached
+ * \param program \c Coal::Program that will be run
+ */
+ CPUProgram(CPUDevice *device, Program *program);
+ ~CPUProgram();
+
+ bool linkStdLib() const;
+ void createOptimizationPasses(llvm::PassManager *manager,
+ bool optimize, bool hasBarrier=false);
+ bool build(llvm::Module *module, std::string *binary_str);
+
+ /**
+ * \brief Initialize an LLVM JIT
+ *
+ * This function creates a \c llvm::JIT object to run this program on
+ * the CPU. A few implementation details :
+ *
+ * - The JIT is set not to resolve unknown symbols using \c dlsym().
+ * This way, a malicious kernel cannot execute arbitrary code on
+ * the host by declaring \c libc functions and calling them.
+ * - All the unknown function names are passed to \c getBuiltin() to
+ * get native built-in implementations.
+ *
+ * \return true if success, false otherwise
+ */
+ bool initJIT();
+ llvm::ExecutionEngine *jit() const; /*!< \brief Current LLVM execution engine */
+
+ private:
+ CPUDevice *p_device;
+ Program *p_program;
+
+ llvm::ExecutionEngine *p_jit;
+ llvm::Module *p_module;
+};
+
+}
+
+#endif