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Diffstat (limited to 'src/core/cpu/program.h')
-rw-r--r-- | src/core/cpu/program.h | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/src/core/cpu/program.h b/src/core/cpu/program.h new file mode 100644 index 0000000..0a08d61 --- /dev/null +++ b/src/core/cpu/program.h @@ -0,0 +1,102 @@ +/* + * 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 |