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src/share/vm/shark/sharkMemoryManager.hpp@d2ede61b7a12 (annotated)

src/share/vm/shark/sharkMemoryManager.hpp

Wed, 11 Aug 2010 05:51:21 -0700

author

twisti

date

Wed, 11 Aug 2010 05:51:21 -0700

changeset 2047

d2ede61b7a12

child 2314

f95d63e2154a

permissions

-rw-r--r--

6976186: integrate Shark HotSpot changes
Summary: Shark is a JIT compiler for Zero that uses the LLVM compiler infrastructure.
Reviewed-by: kvn, twisti
Contributed-by: Gary Benson <gbenson@redhat.com>

twisti@2047	1	/*
twisti@2047	2	* Copyright (c) 1999, 2007, Oracle and/or its affiliates. All rights reserved.
twisti@2047	3	* Copyright 2009 Red Hat, Inc.
twisti@2047	4	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
twisti@2047	5	*
twisti@2047	6	* This code is free software; you can redistribute it and/or modify it
twisti@2047	7	* under the terms of the GNU General Public License version 2 only, as
twisti@2047	8	* published by the Free Software Foundation.
twisti@2047	9	*
twisti@2047	10	* This code is distributed in the hope that it will be useful, but WITHOUT
twisti@2047	11	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
twisti@2047	12	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
twisti@2047	13	* version 2 for more details (a copy is included in the LICENSE file that
twisti@2047	14	* accompanied this code).
twisti@2047	15	*
twisti@2047	16	* You should have received a copy of the GNU General Public License version
twisti@2047	17	* 2 along with this work; if not, write to the Free Software Foundation,
twisti@2047	18	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
twisti@2047	19	*
twisti@2047	20	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
twisti@2047	21	* or visit www.oracle.com if you need additional information or have any
twisti@2047	22	* questions.
twisti@2047	23	*
twisti@2047	24	*/
twisti@2047	25
twisti@2047	26	// SharkMemoryManager wraps the LLVM JIT Memory Manager. We could use
twisti@2047	27	// this to run our own memory allocation policies, but for now all we
twisti@2047	28	// use it for is figuring out where the resulting native code ended up.
twisti@2047	29
twisti@2047	30	class SharkMemoryManager : public llvm::JITMemoryManager {
twisti@2047	31	public:
twisti@2047	32	SharkMemoryManager()
twisti@2047	33	: _mm(llvm::JITMemoryManager::CreateDefaultMemManager()) {}
twisti@2047	34
twisti@2047	35	private:
twisti@2047	36	llvm::JITMemoryManager* _mm;
twisti@2047	37
twisti@2047	38	private:
twisti@2047	39	llvm::JITMemoryManager* mm() const {
twisti@2047	40	return _mm;
twisti@2047	41	}
twisti@2047	42
twisti@2047	43	private:
twisti@2047	44	std::map<const llvm::Function*, SharkEntry*> _entry_map;
twisti@2047	45
twisti@2047	46	public:
twisti@2047	47	void set_entry_for_function(const llvm::Function* function,
twisti@2047	48	SharkEntry* entry) {
twisti@2047	49	_entry_map[function] = entry;
twisti@2047	50	}
twisti@2047	51	SharkEntry* get_entry_for_function(const llvm::Function* function) {
twisti@2047	52	return _entry_map[function];
twisti@2047	53	}
twisti@2047	54
twisti@2047	55	public:
twisti@2047	56	void AllocateGOT();
twisti@2047	57	unsigned char* getGOTBase() const;
twisti@2047	58	unsigned char* allocateStub(const llvm::GlobalValue* F,
twisti@2047	59	unsigned StubSize,
twisti@2047	60	unsigned Alignment);
twisti@2047	61	unsigned char* startFunctionBody(const llvm::Function* F,
twisti@2047	62	uintptr_t& ActualSize);
twisti@2047	63	void endFunctionBody(const llvm::Function* F,
twisti@2047	64	unsigned char* FunctionStart,
twisti@2047	65	unsigned char* FunctionEnd);
twisti@2047	66	unsigned char* startExceptionTable(const llvm::Function* F,
twisti@2047	67	uintptr_t& ActualSize);
twisti@2047	68	void endExceptionTable(const llvm::Function* F,
twisti@2047	69	unsigned char* TableStart,
twisti@2047	70	unsigned char* TableEnd,
twisti@2047	71	unsigned char* FrameRegister);
twisti@2047	72	#if SHARK_LLVM_VERSION < 27
twisti@2047	73	void* getDlsymTable() const;
twisti@2047	74	void SetDlsymTable(void *ptr);
twisti@2047	75	#endif
twisti@2047	76	void setPoisonMemory(bool);
twisti@2047	77	uint8_t* allocateGlobal(uintptr_t, unsigned int);
twisti@2047	78	void setMemoryWritable();
twisti@2047	79	void setMemoryExecutable();
twisti@2047	80	#if SHARK_LLVM_VERSION >= 27
twisti@2047	81	void deallocateExceptionTable(void *ptr);
twisti@2047	82	void deallocateFunctionBody(void *ptr);
twisti@2047	83	#else
twisti@2047	84	void deallocateMemForFunction(const llvm::Function* F);
twisti@2047	85	#endif
twisti@2047	86	unsigned char *allocateSpace(intptr_t Size,
twisti@2047	87	unsigned int Alignment);
twisti@2047	88	};