include/llvm/ExecutionEngine/Orc/OrcTargetSupport.h

   1 //===-- OrcTargetSupport.h - Code to support specific targets  --*- C++ -*-===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // Target specific code for Orc, e.g. callback assembly.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #ifndef LLVM_EXECUTIONENGINE_ORC_ORCTARGETSUPPORT_H
  15 #define LLVM_EXECUTIONENGINE_ORC_ORCTARGETSUPPORT_H
  16
  17 #include "IndirectionUtils.h"
  18
  19 namespace llvm {
  20
  21 class OrcX86_64 {
  22 public:
  23   static const char *ResolverBlockName;
  24
  25   /// @brief Insert module-level inline callback asm into module M for the
  26   /// symbols managed by JITResolveCallbackHandler J.
  27   static void insertResolverBlock(
  28                                  Module &M,
  29                                  JITCompileCallbackManagerBase<OrcX86_64> &JCBM);
  30
  31   /// @brief Get a label name from the given index.
  32   typedef std::function<std::string(unsigned)> LabelNameFtor;
  33
  34   static const unsigned CallSize = 6;
  35
  36   /// @brief Insert the requested number of trampolines into the given module.
  37   /// @param M Module to insert the call block into.
  38   /// @param NumCalls Number of calls to create in the call block.
  39   /// @param StartIndex Optional argument specifying the index suffix to start
  40   ///                   with.
  41   /// @return A functor that provides the symbol name for each entry in the call
  42   ///         block.
  43   ///
  44   static LabelNameFtor insertCompileCallbackTrampolines(
  45                                                     Module &M,
  46                                                     TargetAddress TrampolineAddr,
  47                                                     unsigned NumCalls,
  48                                                     unsigned StartIndex = 0);
  49
  50 };
  51
  52 }
  53
  54 #endif // LLVM_EXECUTIONENGINE_ORC_ORCTARGETSUPPORT_H