diff options
Diffstat (limited to 'include/llvm/ExecutionEngine/ExecutionEngine.h')
-rw-r--r-- | include/llvm/ExecutionEngine/ExecutionEngine.h | 64 |
1 files changed, 57 insertions, 7 deletions
diff --git a/include/llvm/ExecutionEngine/ExecutionEngine.h b/include/llvm/ExecutionEngine/ExecutionEngine.h index 233084d..4dca870 100644 --- a/include/llvm/ExecutionEngine/ExecutionEngine.h +++ b/include/llvm/ExecutionEngine/ExecutionEngine.h @@ -18,11 +18,11 @@ #include "llvm-c/ExecutionEngine.h" #include "llvm/ADT/SmallVector.h" #include "llvm/ADT/StringRef.h" -#include "llvm/ADT/ValueMap.h" +#include "llvm/IR/ValueHandle.h" +#include "llvm/IR/ValueMap.h" #include "llvm/MC/MCCodeGenInfo.h" #include "llvm/Support/ErrorHandling.h" #include "llvm/Support/Mutex.h" -#include "llvm/Support/ValueHandle.h" #include "llvm/Target/TargetMachine.h" #include "llvm/Target/TargetOptions.h" #include <map> @@ -48,6 +48,11 @@ class RTDyldMemoryManager; class Triple; class Type; +namespace object { + class Archive; + class ObjectFile; +} + /// \brief Helper class for helping synchronize access to the global address map /// table. class ExecutionEngineState { @@ -106,7 +111,7 @@ class ExecutionEngine { ExecutionEngineState EEState; /// The target data for the platform for which execution is being performed. - const DataLayout *TD; + const DataLayout *DL; /// Whether lazy JIT compilation is enabled. bool CompilingLazily; @@ -125,7 +130,7 @@ protected: /// optimize for the case where there is only one module. SmallVector<Module*, 1> Modules; - void setDataLayout(const DataLayout *td) { TD = td; } + void setDataLayout(const DataLayout *Val) { DL = Val; } /// getMemoryforGV - Allocate memory for a global variable. virtual char *getMemoryForGV(const GlobalVariable *GV); @@ -204,9 +209,36 @@ public: Modules.push_back(M); } + /// addObjectFile - Add an ObjectFile to the execution engine. + /// + /// This method is only supported by MCJIT. MCJIT will immediately load the + /// object into memory and adds its symbols to the list used to resolve + /// external symbols while preparing other objects for execution. + /// + /// Objects added using this function will not be made executable until + /// needed by another object. + /// + /// MCJIT will take ownership of the ObjectFile. + virtual void addObjectFile(object::ObjectFile *O) { + llvm_unreachable( + "ExecutionEngine subclass doesn't implement addObjectFile."); + } + + /// addArchive - Add an Archive to the execution engine. + /// + /// This method is only supported by MCJIT. MCJIT will use the archive to + /// resolve external symbols in objects it is loading. If a symbol is found + /// in the Archive the contained object file will be extracted (in memory) + /// and loaded for possible execution. + /// + /// MCJIT will take ownership of the Archive. + virtual void addArchive(object::Archive *A) { + llvm_unreachable("ExecutionEngine subclass doesn't implement addArchive."); + } + //===--------------------------------------------------------------------===// - const DataLayout *getDataLayout() const { return TD; } + const DataLayout *getDataLayout() const { return DL; } /// removeModule - Remove a Module from the list of modules. Returns true if /// M is found. @@ -232,7 +264,7 @@ public: /// /// This function is deprecated for the MCJIT execution engine. /// - /// FIXME: the JIT and MCJIT interfaces should be disentangled or united + /// FIXME: the JIT and MCJIT interfaces should be disentangled or united /// again, if possible. /// virtual void *getPointerToNamedFunction(const std::string &Name, @@ -430,6 +462,24 @@ public: llvm_unreachable("No support for an object cache"); } + /// setProcessAllSections (MCJIT Only): By default, only sections that are + /// "required for execution" are passed to the RTDyldMemoryManager, and other + /// sections are discarded. Passing 'true' to this method will cause + /// RuntimeDyld to pass all sections to its RTDyldMemoryManager regardless + /// of whether they are "required to execute" in the usual sense. + /// + /// Rationale: Some MCJIT clients want to be able to inspect metadata + /// sections (e.g. Dwarf, Stack-maps) to enable functionality or analyze + /// performance. Passing these sections to the memory manager allows the + /// client to make policy about the relevant sections, rather than having + /// MCJIT do it. + virtual void setProcessAllSections(bool ProcessAllSections) { + llvm_unreachable("No support for ProcessAllSections option"); + } + + /// Return the target machine (if available). + virtual TargetMachine *getTargetMachine() { return NULL; } + /// DisableLazyCompilation - When lazy compilation is off (the default), the /// JIT will eagerly compile every function reachable from the argument to /// getPointerToFunction. If lazy compilation is turned on, the JIT will only @@ -550,7 +600,7 @@ public: WhichEngine = w; return *this; } - + /// setMCJITMemoryManager - Sets the MCJIT memory manager to use. This allows /// clients to customize their memory allocation policies for the MCJIT. This /// is only appropriate for the MCJIT; setting this and configuring the builder |