jitasmconstants.h

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/*
 * @(#)jitasmconstants.h	1.76 06/10/10
 *
 * Copyright  1990-2008 Sun Microsystems, Inc. All Rights Reserved.  
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER  
 *   
 * This program is free software; you can redistribute it and/or  
 * modify it under the terms of the GNU General Public License version  
 * 2 only, as published by the Free Software Foundation.   
 *   
 * This program is distributed in the hope that it will be useful, but  
 * WITHOUT ANY WARRANTY; without even the implied warranty of  
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU  
 * General Public License version 2 for more details (a copy is  
 * included at /legal/license.txt).   
 *   
 * You should have received a copy of the GNU General Public License  
 * version 2 along with this work; if not, write to the Free Software  
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  
 * 02110-1301 USA   
 *   
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa  
 * Clara, CA 95054 or visit www.sun.com if you need additional  
 * information or have any questions. 
 *
 */

#ifndef _INCLUDED_ASMCONSTANTS_H
#define _INCLUDED_ASMCONSTANTS_H

#include "javavm/include/porting/jit/jit.h"

/* NOTE: For each of these constants and offsets, please make sure to add a
   corresponding assert in CVMJITassertMiscJITAssumptions() in jitcompile.c.
   This will help to reduce the chance of JIT implementation bugs being
   introduced due invalid assumptions about constants or offsets that have
   changed without the JIT code's knowledge.
*/

#define OFFSET_CVMClassBlock_classNameX				4
#define OFFSET_CVMClassBlock_superClassCb			8

#define OFFSET_CVMClassBlock_interfacesX			16
#define OFFSET_CVMClassBlock_arrayInfoX				12
#define OFFSET_CVMClassBlock_accessFlagsX			40
#define OFFSET_CVMClassBlock_instanceSizeX			44
#define OFFSET_CVMClassBlock_javaInstanceX			48
#if   defined(CVM_DEBUG) && defined(CVM_DEBUG_CLASSINFO)
#define OFFSET_CVMClassBlock_methodTablePtrX			76
#elif defined(CVM_DEBUG) || defined(CVM_DEBUG_CLASSINFO)
#define OFFSET_CVMClassBlock_methodTablePtrX			72
#else
#define OFFSET_CVMClassBlock_methodTablePtrX			68
#endif

#define OFFSET_CVMArrayInfo_elementCb				12

/* Offsets and constants for CVMTypeID */
#define CONSTANT_CVMtypeidArrayShift				14
#define CONSTANT_CVMtypeidArrayMask				0xc000
#define CONSTANT_CVM_TYPEID_INT_ARRAY				0x4003
#define CONSTANT_CVM_TYPEID_SHORT_ARRAY				0x4004
#define CONSTANT_CVM_TYPEID_CHAR_ARRAY				0x4005
#define CONSTANT_CVM_TYPEID_LONG_ARRAY				0x4006
#define CONSTANT_CVM_TYPEID_BYTE_ARRAY				0x4007
#define CONSTANT_CVM_TYPEID_FLOAT_ARRAY				0x4008
#define CONSTANT_CVM_TYPEID_DOUBLE_ARRAY			0x4009
#define CONSTANT_CVM_TYPEID_BOOLEAN_ARRAY			0x400a

/* Offsets and constants for CVMMethodBlock: */
#ifdef CVM_METHODBLOCK_HAS_CB
#define OFFSET_CVMMethodBlock_jitInvokerX			0
#define OFFSET_CVMMethodBlock_cbX				12
#define OFFSET_CVMMethodBlock_methodTableIndexX			20
#define OFFSET_CVMMethodBlock_argsSizeX				22
#define OFFSET_CVMMethodBlock_methodIndexX			23
#define OFFSET_CVMMethodBlock_invokerAndAccessFlagsX            24
#define OFFSET_CVMMethodBlock_codeX				28
#define CONSTANT_CVMMethodBlock_size                            32
#else
#define OFFSET_CVMMethodBlock_jitInvokerX			0
#define OFFSET_CVMMethodBlock_methodTableIndexX                 16
#define OFFSET_CVMMethodBlock_argsSizeX                         18
#define OFFSET_CVMMethodBlock_methodIndexX                      19
#define OFFSET_CVMMethodBlock_invokerAndAccessFlagsX            20
#define OFFSET_CVMMethodBlock_codeX                             24
#define CONSTANT_CVMMethodBlock_size                            28
#endif

#define OFFSET_CVMMethodRange_mb				4

#define OFFSET_CVMJmd_maxLocalsX				0

#if 0
#define OFFSET_CVMCmd_capacityX					0
#define OFFSET_CVMCmd_entryCountX				3
#define OFFSET_CVMCmd_maxLocalsX				8
#endif

/* Offsets and constants for CVMCompiledFrame: */
#define OFFSET_CVMCompiledFrame_PC				16
#define OFFSET_CVMCompiledFrame_receiverObjX			20
#ifdef CVMCPU_HAS_CP_REG
#define OFFSET_CVMCompiledFrame_cpBaseRegX			24
#define OFFSET_CVMCompiledFrame_opstackX			28
#else
#define OFFSET_CVMCompiledFrame_opstackX			24
#endif

/* Offsets and constants for CVMFrame: */
#define OFFSET_CVMFrame_prevX					0
#define OFFSET_CVMFrame_type					4
#define OFFSET_CVMFrame_flags					5
#define OFFSET_CVMFrame_topOfStack				8
#define OFFSET_CVMFrame_mb					12

/* Offsets and constants for CVMExecEnv: */
#define OFFSET_CVMExecEnv_tcstate_GCSAFE			0
#define OFFSET_CVMExecEnv_interpreterStack			56
#define OFFSET_CVMExecEnv_miscICell				32
#define OFFSET_CVMExecEnv_objLocksOwned                         140
#define OFFSET_CVMExecEnv_objLocksFreeOwned                     144
#define OFFSET_CVMExecEnv_invokeMb				160

/* Offsets and constants for CVMInterfaceTable: */
#define CONSTANT_LOG2_CVMInterfaceTable_SIZE                    3
#define CONSTANT_LOG2_CVMInterfaceTable_methodTableIndex_SIZE   1

/* Offsets and constants for CVMInterfaces: */
#define OFFSET_CVMInterfaces_interfaceCountX			0
#define OFFSET_CVMInterfaces_itable				4
#define OFFSET_CVMInterfaces_itable0_intfInfoX                  8

/* Offsets and constants for CVMStack: */
#define OFFSET_CVMStack_currentFrame				20
#define OFFSET_CVMStack_stackChunkEnd				28

/* Offsets and constants for CVMCCExecEnv: */
#define OFFSET_CVMCCExecEnv_ee					0
#define OFFSET_CVMCCExecEnv_stackChunkEnd			4
#ifndef CVM_JIT_COPY_CCMCODE_TO_CODECACHE
#define OFFSET_CVMCCExecEnv_ccmGCRendezvousGlue			8
#endif
#if defined(CVMJIT_TRAP_BASED_GC_CHECKS) && defined(CVMCPU_HAS_VOLATILE_GC_REG)
#define OFFSET_CVMCCExecEnv_gcTrapAddr				12
#endif
#define OFFSET_CVMCCExecEnv_ccmStorage				16
#define CONSTANT_CVMCCExecEnv_size                              80

/* Offsets and constants for CVMGlobalState: */
#define OFFSET_CVMGlobalState_allocPtrPtr			0
#define OFFSET_CVMGlobalState_allocTopPtr			4
#ifdef CVM_ADV_ATOMIC_SWAP
#define OFFSET_CVMGlobalState_fastHeapLock			8
#endif
#ifdef CVM_TRACE_ENABLED
#define OFFSET_CVMGlobalState_debugFlags		        12
#endif
#ifdef CVM_TRACE_JIT
#define OFFSET_CVMGlobalState_debugJITFlags                     16
#endif
#define OFFSET_CVMGlobalState_cstate_GCSAFE		        24

/* Offsets and constants for CVMCState: */
#define OFFSET_CVMCState_request				0

/* Offsets and constants for CVMObjectHeader: */
#define OFFSET_CVMObjectHeader_clas                             0
#define OFFSET_CVMObjectHeader_various32                        4

/* Offsets and constants for fastlocking: */
#define CONSTANT_CVM_OBJECT_NO_HASH                             0
#define CONSTANT_CVM_SYNC_BITS                                  2
#define CONSTANT_CVM_HASH_BITS                                  24
#define CONSTANT_CVM_HASH_MASK                                  ((1<<24)-1)
#define OFFSET_CVMObjMonitor_bits                               0

#define OFFSET_CVMOwnedMonitor_owner                            0
#define OFFSET_CVMOwnedMonitor_type                             4
#define OFFSET_CVMOwnedMonitor_object                           8
#define OFFSET_CVMOwnedMonitor_u_fast_bits                      12
#define OFFSET_CVMOwnedMonitor_next                             16

/* NOTE: In the following, OFFSET_CVMOwnedMonitor_count is only applicable
   if CVM_FASTLOCK_TYPE != CVM_FASTLOCK_NONE.  But since we do not know what
   CVM_FASTLOCK_TYPE is in this file, we go ahead and just declare
   OFFSET_CVMOwnedMonitor_count.
*/
#ifdef CVM_DEBUG
#define OFFSET_CVMOwnedMonitor_magic                            20
#define OFFSET_CVMOwnedMonitor_state                            24
#define OFFSET_CVMOwnedMonitor_count                            28
#define CONSTANT_CVM_OWNEDMON_FREE                              0
#define CONSTANT_CVM_OWNEDMON_OWNED                             1
#else
#define OFFSET_CVMOwnedMonitor_count                            20
#endif /* CVM_DEBUG */

#define CONSTANT_CVM_LOCKSTATE_UNLOCKED                         0x2
#define CONSTANT_CVM_LOCKSTATE_LOCKED                           0x0

#define CONSTANT_CVM_INVALID_REENTRY_COUNT     			0xffffffff

#define CONSTANT_CLASS_ACC_FINALIZABLE	         		0x04

#define CONSTANT_METHOD_ACC_STATIC				0x08
#define CONSTANT_METHOD_ACC_SYNCHRONIZED			0x20
#define CONSTANT_METHOD_ACC_NATIVE			        0x100
#define CONSTANT_METHOD_ACC_ABSTRACT                            0x400

#define CONSTANT_INVOKE_CNI_METHOD				2
#define CONSTANT_INVOKE_JNI_METHOD				3

#define CONSTANT_CNI_NEW_TRANSITION_FRAME			-1
#define CONSTANT_CNI_NEW_MB					-3

#define CONSTANT_TRACE_METHOD					0x2

#ifdef CVMCPU_HAS_CP_REG
#define CONSTANT_CMD_SIZE_ADJUST0 2
#else
#define CONSTANT_CMD_SIZE_ADJUST0 0
#endif

#ifdef CVM_DEBUG_ASSERTS
#define CONSTANT_CMD_SIZE_ADJUST1 2
#else
#define CONSTANT_CMD_SIZE_ADJUST1 0
#endif

#ifdef CVMJIT_PATCH_BASED_GC_CHECKS
#define CONSTANT_CMD_SIZE_ADJUST2 2
#else
#define CONSTANT_CMD_SIZE_ADJUST2 0
#endif

#ifdef CVM_JIT_PATCHED_METHOD_INVOCATIONS
#define CONSTANT_CMD_SIZE_ADJUST3 2
#else
#define CONSTANT_CMD_SIZE_ADJUST3 0
#endif

#define CONSTANT_CMD_SIZE_ADJUST (		\
    CONSTANT_CMD_SIZE_ADJUST0 +			\
    CONSTANT_CMD_SIZE_ADJUST1 +			\
    CONSTANT_CMD_SIZE_ADJUST2 +			\
    CONSTANT_CMD_SIZE_ADJUST3)
	
#define CONSTANT_CMD_SIZE0	(20 + CONSTANT_CMD_SIZE_ADJUST)
/* align to word boundary */
#define CONSTANT_CMD_SIZE	((CONSTANT_CMD_SIZE0 + 3) & ~3)

#define CONSTANT_CVM_FRAME_MASK_SPECIAL				0x1
#define CONSTANT_CVM_FRAME_MASK_SLOW				0x2
#define CONSTANT_CVM_FRAME_MASK_ALL				0x3

#define CONSTANT_HANDLE_GC_FOR_RETURN				1

#ifdef CVM_DEBUG_ASSERTS
#define CONSTANT_CVM_FRAMETYPE_NONE				0
#define CONSTANT_CVM_FRAMETYPE_COMPILED				7
#else
#define CONSTANT_CVM_FRAMETYPE_COMPILED				6
#endif

/* Offsets and constants for the java.lang.String class: */
#define OFFSET_java_lang_String_value   8
#define OFFSET_java_lang_String_offset  12
#define OFFSET_java_lang_String_count   16

/* Offset and constants for Array classes: */
#define OFFSET_ARRAY_LENGTH		8
#define OFFSET_ARRAY_ELEMENTS           12

/* Offset and constants for GC: */
#if (CVM_GCCHOICE == CVM_GC_GENERATIONAL) && !defined(CVM_SEGMENTED_HEAP)

#define CONSTANT_CARD_DIRTY_BYTE	1
#ifdef CVM_64
#define CONSTANT_CVM_GENGC_CARD_SHIFT	10
#else
#define CONSTANT_CVM_GENGC_CARD_SHIFT	9
#endif
#define CONSTANT_NUM_BYTES_PER_CARD	(1 << CONSTANT_CVM_GENGC_CARD_SHIFT)

#endif

#endif /* _INCLUDED_ASMCONSTANTS_H */