From: Andrew Kaylor Date: Thu, 1 Nov 2012 00:46:04 +0000 (+0000) Subject: Streamlined memory manager hierarchy for MCJIT and RuntimeDyld. X-Git-Url: http://plrg.eecs.uci.edu/git/?p=oota-llvm.git;a=commitdiff_plain;h=647d6d7d3b6bfc8d99b8425cff50f979dbbd2ab6 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 --- diff --git a/include/llvm/ExecutionEngine/JITMemoryManager.h b/include/llvm/ExecutionEngine/JITMemoryManager.h index 4c75b6ab970..90896465018 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 a71b1411c8a..891f534862f 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; }; diff --git a/lib/ExecutionEngine/MCJIT/CMakeLists.txt b/lib/ExecutionEngine/MCJIT/CMakeLists.txt index fef71768b49..2911a507722 100644 --- a/lib/ExecutionEngine/MCJIT/CMakeLists.txt +++ b/lib/ExecutionEngine/MCJIT/CMakeLists.txt @@ -1,4 +1,3 @@ add_llvm_library(LLVMMCJIT MCJIT.cpp - MCJITMemoryManager.cpp ) diff --git a/lib/ExecutionEngine/MCJIT/MCJIT.cpp b/lib/ExecutionEngine/MCJIT/MCJIT.cpp index 68c0c34f61b..a0ad985145b 100644 --- a/lib/ExecutionEngine/MCJIT/MCJIT.cpp +++ b/lib/ExecutionEngine/MCJIT/MCJIT.cpp @@ -8,7 +8,6 @@ //===----------------------------------------------------------------------===// #include "MCJIT.h" -#include "MCJITMemoryManager.h" #include "llvm/DerivedTypes.h" #include "llvm/Function.h" #include "llvm/ExecutionEngine/GenericValue.h" @@ -46,7 +45,7 @@ ExecutionEngine *MCJIT::createJIT(Module *M, // FIXME: Don't do this here. sys::DynamicLibrary::LoadLibraryPermanently(0, NULL); - return new MCJIT(M, TM, new MCJITMemoryManager(JMM), GVsWithCode); + return new MCJIT(M, TM, JMM, GVsWithCode); } MCJIT::MCJIT(Module *m, TargetMachine *tm, RTDyldMemoryManager *MM, diff --git a/lib/ExecutionEngine/MCJIT/MCJITMemoryManager.cpp b/lib/ExecutionEngine/MCJIT/MCJITMemoryManager.cpp deleted file mode 100644 index 457fe5e3ef0..00000000000 --- a/lib/ExecutionEngine/MCJIT/MCJITMemoryManager.cpp +++ /dev/null @@ -1,14 +0,0 @@ -//==-- MCJITMemoryManager.cpp - Definition for the Memory Manager -*-C++ -*-==// -// -// The LLVM Compiler Infrastructure -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// - -#include "MCJITMemoryManager.h" - -using namespace llvm; - -void MCJITMemoryManager::anchor() { } diff --git a/lib/ExecutionEngine/MCJIT/MCJITMemoryManager.h b/lib/ExecutionEngine/MCJIT/MCJITMemoryManager.h deleted file mode 100644 index 441aaeb5eca..00000000000 --- a/lib/ExecutionEngine/MCJIT/MCJITMemoryManager.h +++ /dev/null @@ -1,50 +0,0 @@ -//===-- MCJITMemoryManager.h - Definition for the Memory Manager ---C++ -*-===// -// -// The LLVM Compiler Infrastructure -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// - -#ifndef LLVM_LIB_EXECUTIONENGINE_MCJITMEMORYMANAGER_H -#define LLVM_LIB_EXECUTIONENGINE_MCJITMEMORYMANAGER_H - -#include "llvm/Module.h" -#include "llvm/ExecutionEngine/JITMemoryManager.h" -#include "llvm/ExecutionEngine/RuntimeDyld.h" -#include - -namespace llvm { - -// The MCJIT memory manager is a layer between the standard JITMemoryManager -// and the RuntimeDyld interface that maps objects, by name, onto their -// matching LLVM IR counterparts in the module(s) being compiled. -class MCJITMemoryManager : public RTDyldMemoryManager { - virtual void anchor(); - OwningPtr JMM; - -public: - MCJITMemoryManager(JITMemoryManager *jmm) : - JMM(jmm?jmm:JITMemoryManager::CreateDefaultMemManager()) {} - - uint8_t *allocateDataSection(uintptr_t Size, unsigned Alignment, - unsigned SectionID) { - return JMM->allocateDataSection(Size, Alignment, SectionID); - } - - uint8_t *allocateCodeSection(uintptr_t Size, unsigned Alignment, - unsigned SectionID) { - return JMM->allocateCodeSection(Size, Alignment, SectionID); - } - - virtual void *getPointerToNamedFunction(const std::string &Name, - bool AbortOnFailure = true) { - return JMM->getPointerToNamedFunction(Name, AbortOnFailure); - } - -}; - -} // End llvm namespace - -#endif diff --git a/tools/lli/lli.cpp b/tools/lli/lli.cpp index 328c665aa5c..22b48cf63f4 100644 --- a/tools/lli/lli.cpp +++ b/tools/lli/lli.cpp @@ -242,7 +242,7 @@ public: // the data cache but not to the instruction cache. virtual void invalidateInstructionCache(); - // The MCJITMemoryManager doesn't use the following functions, so we don't + // The RTDyldMemoryManager doesn't use the following functions, so we don't // need implement them. virtual void setMemoryWritable() { llvm_unreachable("Unexpected call!");