From 647d6d7d3b6bfc8d99b8425cff50f979dbbd2ab6 Mon Sep 17 00:00:00 2001 From: Andrew Kaylor Date: Thu, 1 Nov 2012 00:46:04 +0000 Subject: Streamlined memory manager hierarchy for MCJIT and RuntimeDyld. Patch by Ashok Thirumurthi git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167192 91177308-0d34-0410-b5e6-96231b3b80d8 --- include/llvm/ExecutionEngine/JITMemoryManager.h | 31 +++---------------------- include/llvm/ExecutionEngine/RuntimeDyld.h | 21 +++++++++++++---- 2 files changed, 19 insertions(+), 33 deletions(-) (limited to 'include/llvm') diff --git a/include/llvm/ExecutionEngine/JITMemoryManager.h b/include/llvm/ExecutionEngine/JITMemoryManager.h index 4c75b6ab97..9089646501 100644 --- a/include/llvm/ExecutionEngine/JITMemoryManager.h +++ b/include/llvm/ExecutionEngine/JITMemoryManager.h @@ -10,7 +10,9 @@ #ifndef LLVM_EXECUTION_ENGINE_JIT_MEMMANAGER_H #define LLVM_EXECUTION_ENGINE_JIT_MEMMANAGER_H +#include "llvm/ExecutionEngine/RuntimeDyld.h" #include "llvm/Support/DataTypes.h" + #include namespace llvm { @@ -22,7 +24,7 @@ namespace llvm { /// memory for the code generated by the JIT. This can be reimplemented by /// clients that have a strong desire to control how the layout of JIT'd memory /// works. -class JITMemoryManager { +class JITMemoryManager : public RTDyldMemoryManager { protected: bool HasGOT; @@ -47,17 +49,6 @@ public: /// debugging, and may be turned on by default in debug mode. virtual void setPoisonMemory(bool poison) = 0; - /// getPointerToNamedFunction - This method returns the address of the - /// specified function. As such it is only useful for resolving library - /// symbols, not code generated symbols. - /// - /// If AbortOnFailure is false and no function with the given name is - /// found, this function silently returns a null pointer. Otherwise, - /// it prints a message to stderr and aborts. - /// - virtual void *getPointerToNamedFunction(const std::string &Name, - bool AbortOnFailure = true) = 0; - //===--------------------------------------------------------------------===// // Global Offset Table Management //===--------------------------------------------------------------------===// @@ -112,22 +103,6 @@ public: virtual void endFunctionBody(const Function *F, uint8_t *FunctionStart, uint8_t *FunctionEnd) = 0; - /// allocateCodeSection - Allocate a memory block of (at least) the given - /// size suitable for executable code. The SectionID is a unique identifier - /// assigned by the JIT and passed through to the memory manager for - /// the instance class to use if it needs to communicate to the JIT about - /// a given section after the fact. - virtual uint8_t *allocateCodeSection(uintptr_t Size, unsigned Alignment, - unsigned SectionID) = 0; - - /// allocateDataSection - Allocate a memory block of (at least) the given - /// size suitable for data. The SectionID is a unique identifier - /// assigned by the JIT and passed through to the memory manager for - /// the instance class to use if it needs to communicate to the JIT about - /// a given section after the fact. - virtual uint8_t *allocateDataSection(uintptr_t Size, unsigned Alignment, - unsigned SectionID) = 0; - /// allocateSpace - Allocate a memory block of the given size. This method /// cannot be called between calls to startFunctionBody and endFunctionBody. virtual uint8_t *allocateSpace(intptr_t Size, unsigned Alignment) = 0; diff --git a/include/llvm/ExecutionEngine/RuntimeDyld.h b/include/llvm/ExecutionEngine/RuntimeDyld.h index a71b1411c8..891f534862 100644 --- a/include/llvm/ExecutionEngine/RuntimeDyld.h +++ b/include/llvm/ExecutionEngine/RuntimeDyld.h @@ -24,9 +24,9 @@ class RuntimeDyldImpl; class ObjectImage; // RuntimeDyld clients often want to handle the memory management of -// what gets placed where. For JIT clients, this is an abstraction layer -// over the JITMemoryManager, which references objects by their source -// representations in LLVM IR. +// what gets placed where. For JIT clients, this is the subset of +// JITMemoryManager required for dynamic loading of binaries. +// // FIXME: As the RuntimeDyld fills out, additional routines will be needed // for the varying types of objects to be allocated. class RTDyldMemoryManager { @@ -37,15 +37,26 @@ public: virtual ~RTDyldMemoryManager(); /// allocateCodeSection - Allocate a memory block of (at least) the given - /// size suitable for executable code. + /// size suitable for executable code. The SectionID is a unique identifier + /// assigned by the JIT engine, and optionally recorded by the memory manager + /// to access a loaded section. virtual uint8_t *allocateCodeSection(uintptr_t Size, unsigned Alignment, unsigned SectionID) = 0; /// allocateDataSection - Allocate a memory block of (at least) the given - /// size suitable for data. + /// size suitable for data. The SectionID is a unique identifier + /// assigned by the JIT engine, and optionally recorded by the memory manager + /// to access a loaded section. virtual uint8_t *allocateDataSection(uintptr_t Size, unsigned Alignment, unsigned SectionID) = 0; + /// getPointerToNamedFunction - This method returns the address of the + /// specified function. As such it is only useful for resolving library + /// symbols, not code generated symbols. + /// + /// If AbortOnFailure is false and no function with the given name is + /// found, this function returns a null pointer. Otherwise, it prints a + /// message to stderr and aborts. virtual void *getPointerToNamedFunction(const std::string &Name, bool AbortOnFailure = true) = 0; }; -- cgit v1.2.3