lscript_bytecode.h
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上传日期:2021-03-01
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- /**
- * @file lscript_bytecode.h
- * @brief classes to build actual bytecode
- *
- * $LicenseInfo:firstyear=2002&license=viewergpl$
- *
- * Copyright (c) 2002-2010, Linden Research, Inc.
- *
- * Second Life Viewer Source Code
- * The source code in this file ("Source Code") is provided by Linden Lab
- * to you under the terms of the GNU General Public License, version 2.0
- * ("GPL"), unless you have obtained a separate licensing agreement
- * ("Other License"), formally executed by you and Linden Lab. Terms of
- * the GPL can be found in doc/GPL-license.txt in this distribution, or
- * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
- *
- * There are special exceptions to the terms and conditions of the GPL as
- * it is applied to this Source Code. View the full text of the exception
- * in the file doc/FLOSS-exception.txt in this software distribution, or
- * online at
- * http://secondlifegrid.net/programs/open_source/licensing/flossexception
- *
- * By copying, modifying or distributing this software, you acknowledge
- * that you have read and understood your obligations described above,
- * and agree to abide by those obligations.
- *
- * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
- * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
- * COMPLETENESS OR PERFORMANCE.
- * $/LicenseInfo$
- */
- #ifndef LL_LSCRIPT_BYTECODE_H
- #define LL_LSCRIPT_BYTECODE_H
- #include "lscript_byteconvert.h"
- #include "lscript_scope.h"
- class LLScriptJumpTable
- {
- public:
- LLScriptJumpTable();
- ~LLScriptJumpTable();
- void addLabel(char *name, S32 offset);
- void addJump(char *name, S32 offset);
- LLMap<char *, S32 *> mLabelMap;
- LLMap<char *, S32 *> mJumpMap;
- };
- class LLScriptByteCodeChunk
- {
- public:
- LLScriptByteCodeChunk(BOOL b_need_jumps);
- ~LLScriptByteCodeChunk();
- void addByte(U8 byte);
- void addU16(U16 data);
- void addBytes(const U8 *bytes, S32 size);
- void addBytes(const char *bytes, S32 size);
- void addBytes(S32 size);
- void addBytesDontInc(S32 size);
- void addInteger(S32 value);
- void addFloat(F32 value);
- void addLabel(char *name);
- void addJump(char *name);
- void connectJumps();
- U8 *mCodeChunk;
- S32 mCurrentOffset;
- LLScriptJumpTable *mJumpTable;
- };
- class LLScriptScriptCodeChunk
- {
- public:
- LLScriptScriptCodeChunk(S32 total_size);
- ~LLScriptScriptCodeChunk();
- void build(LLFILE *efp, LLFILE *bcfp);
- LLScriptByteCodeChunk *mRegisters;
- LLScriptByteCodeChunk *mGlobalVariables;
- LLScriptByteCodeChunk *mGlobalFunctions;
- LLScriptByteCodeChunk *mStates;
- LLScriptByteCodeChunk *mHeap;
- S32 mTotalSize;
- U8 *mCompleteCode;
- };
- extern LLScriptScriptCodeChunk *gScriptCodeChunk;
- #endif