зеркало из https://github.com/mozilla/gecko-dev.git
116 строки
3.8 KiB
C++
116 строки
3.8 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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//
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// File: FormatStructures.h
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//
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// Authors: Simon Holmes a Court
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//
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// To avoid circular include problems, data structures used in the md emitter, md formatter
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// and native formatter may be found here.
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//
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#ifndef _FORMAT_STRUCTURES_
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#define _FORMAT_STRUCTURES_
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#include "Fundamentals.h"
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#include "LogModule.h"
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struct Method;
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class VirtualRegisterManager;
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struct MethodDescriptor;
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//-----------------------------------------------------------------------------------------------------------
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// FormattedCodeInfo
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struct FormattedCodeInfo
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{
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Method* method; // runtime descriptor of the method we're formatting
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Uint8* methodStart; // ptr to beginning of allocated memory for the method
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Uint8* methodEnd; // ptr to (FIX byte after?) end of allocated memory for the method
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Uint32 prologSize;
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Uint32 epilogSize;
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Uint32 bodySize; // prologSize + epilogSize + formatted size of on the instructions in all ControlNodes
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Uint32 preMethodSize;
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Uint32 postMethodSize;
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};
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//-----------------------------------------------------------------------------------------------------------
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// TVector
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#ifdef GENERATE_FOR_PPC
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#define USE_TVECTOR
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#endif
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#ifdef USE_TVECTOR
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extern void* _MD_createTVector(const MethodDescriptor& inMethodDescriptor, void* inFunctionMemory);
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#define M_MD_createTVector(inMethodDescriptor, inFunctionMemory) (_MD_createTVector(inMethodDescriptor, inFunctionMemory))
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#else
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#define M_MD_createTVector(inMethodDescriptor, inFunctionMemory) (inFunctionMemory)
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#endif
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//-----------------------------------------------------------------------------------------------------------
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// StackFrameInfo
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class StackFrameInfo
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{
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protected:
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Uint8 numSavedGPRs;
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Uint8 numSavedFPRs;
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Uint8 numMonitorSlots;
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Uint32 localStore_bytes;
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DEBUG_ONLY(bool hasBeenInited;)
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public:
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StackFrameInfo() { DEBUG_ONLY(hasBeenInited = false); };
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void init(VirtualRegisterManager& /*inVRManager*/) { DEBUG_ONLY(hasBeenInited = true); }
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Uint32 getNumSavedGPRWords() { assert(hasBeenInited); return numSavedGPRs; }
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Uint32 getNumSavedFPRWords() { assert(hasBeenInited); return numSavedFPRs; }
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Uint32 getNumMonitorSlots() { assert(hasBeenInited); return numMonitorSlots; }
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Uint32 getRegisterOffset() { assert(hasBeenInited); return numMonitorSlots; }
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Uint32 getLocalStoreSizeBytes() { assert(hasBeenInited); return localStore_bytes; }
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// x86 only right now!
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// returns the offset (off EBP) to the beginning of the registers
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Uint32 getCalleeSavedBeginOffset()
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{
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return localStore_bytes + 4;
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}
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// returns the offset (off EBP) to the stack pointer before any arguments are pushed
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Uint32 getStackPointerOffset()
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{
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return localStore_bytes + (4 * numSavedGPRs) + (4 * numSavedFPRs) + (4 * numMonitorSlots);
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}
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#ifdef DEBUG_LOG
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void print(LogModuleObject &f)
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{
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UT_OBJECTLOG(f, PR_LOG_ALWAYS, ("Policy: g%d:f%d:l%d\n", getNumSavedGPRWords(), getNumSavedFPRWords(), getLocalStoreSizeBytes()));
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}
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#endif // DEBUG_LOG
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};
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#endif // _FORMAT_STRUCTURES_
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