src/hotspot/share/runtime/vmStructs.hpp - platform/libcore - Git at Google

 /*
  * Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code 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 code 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 in the LICENSE file that
  * accompanied this code).
  *
  * 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  *
  */

 #ifndef SHARE_VM_RUNTIME_VMSTRUCTS_HPP
 #define SHARE_VM_RUNTIME_VMSTRUCTS_HPP

 #include "utilities/debug.hpp"
 #include "utilities/globalDefinitions.hpp"
 #ifdef COMPILER1
 #include "c1/c1_Runtime1.hpp"
 #endif

 // This table encapsulates the debugging information required by the
 // serviceability agent in order to run. Specifically, we need to
 // understand the layout of certain C data structures (offsets, in
 // bytes, of their fields.)
 //
 // There are alternatives for the design of this mechanism, including
 // parsing platform-specific debugging symbols from a debug build into
 // a program database. While this current mechanism can be considered
 // to be a workaround for the inability to debug arbitrary C and C++
 // programs at the present time, it does have certain advantages.
 // First, it is platform-independent, which will vastly simplify the
 // initial bringup of the system both now and on future platforms.
 // Second, it is embedded within the VM, as opposed to being in a
 // separate program database; experience has shown that whenever
 // portions of a system are decoupled, version skew is problematic.
 // Third, generating a program database, for example for a product
 // build, would probably require two builds to be done: the desired
 // product build as well as an intermediary build with the PRODUCT
 // flag turned on but also compiled with -g, leading to a doubling of
 // the time required to get a serviceability agent-debuggable product
 // build. Fourth, and very significantly, this table probably
 // preserves more information about field types than stabs do; for
 // example, it preserves the fact that a field is a "jlong" rather
 // than transforming the type according to the typedef in jni_md.h,
 // which allows the Java-side code to identify "Java-sized" fields in
 // C++ data structures. If the symbol parsing mechanism was redone
 // using stabs, it might still be necessary to have a table somewhere
 // containing this information.
 //
 // Do not change the sizes or signedness of the integer values in
 // these data structures; they are fixed over in the serviceability
 // agent's Java code (for bootstrapping).

 typedef struct {
   const char* typeName;            // The type name containing the given field (example: "Klass")
   const char* fieldName;           // The field name within the type           (example: "_name")
   const char* typeString;          // Quoted name of the type of this field (example: "Symbol*";
                                    // parsed in Java to ensure type correctness
   int32_t  isStatic;               // Indicates whether following field is an offset or an address
   uint64_t offset;                 // Offset of field within structure; only used for nonstatic fields
   void* address;                   // Address of field; only used for static fields
                                    // ("offset" can not be reused because of apparent SparcWorks compiler bug
                                    // in generation of initializer data)
 } VMStructEntry;

 typedef struct {
   const char* typeName;            // Type name (example: "Method")
   const char* superclassName;      // Superclass name, or null if none (example: "oopDesc")
   int32_t isOopType;               // Does this type represent an oop typedef? (i.e., "Method*" or
                                    // "Klass*", but NOT "Method")
   int32_t isIntegerType;           // Does this type represent an integer type (of arbitrary size)?
   int32_t isUnsigned;              // If so, is it unsigned?
   uint64_t size;                   // Size, in bytes, of the type
 } VMTypeEntry;

 typedef struct {
   const char* name;                // Name of constant (example: "_thread_in_native")
   int32_t value;                   // Value of constant
 } VMIntConstantEntry;

 typedef struct {
   const char* name;                // Name of constant (example: "_thread_in_native")
   uint64_t value;                  // Value of constant
 } VMLongConstantEntry;

 typedef struct {
   const char* name;                // Name of address (example: "SharedRuntime::register_finalizer")
   void* value;                     // Value of address
 } VMAddressEntry;

 // This class is a friend of most classes, to be able to access
 // private fields
 class VMStructs {
 public:
   // The last entry is identified over in the serviceability agent by
   // the fact that it has a NULL fieldName
   static VMStructEntry localHotSpotVMStructs[];
   // The function to get localHotSpotVMStructs length
   static size_t localHotSpotVMStructsLength();

   // The last entry is identified over in the serviceability agent by
   // the fact that it has a NULL typeName
   static VMTypeEntry   localHotSpotVMTypes[];
   // The function to get localHotSpotVMTypes length
   static size_t localHotSpotVMTypesLength();

   // Table of integer constants required by the serviceability agent.
   // The last entry is identified over in the serviceability agent by
   // the fact that it has a NULL typeName
   static VMIntConstantEntry localHotSpotVMIntConstants[];
   // The function to get localHotSpotVMIntConstants length
   static size_t localHotSpotVMIntConstantsLength();

   // Table of long constants required by the serviceability agent.
   // The last entry is identified over in the serviceability agent by
   // the fact that it has a NULL typeName
   static VMLongConstantEntry localHotSpotVMLongConstants[];
   // The function to get localHotSpotVMIntConstants length
   static size_t localHotSpotVMLongConstantsLength();

   /**
    * Table of addresses.
    */
   static VMAddressEntry localHotSpotVMAddresses[];

   // This is used to run any checking code necessary for validation of
   // the data structure (debug build only)
   static void init();

 #ifndef PRODUCT
   // Execute unit tests
   static void test();
 #endif

 private:
   // Look up a type in localHotSpotVMTypes using strcmp() (debug build only).
   // Returns 1 if found, 0 if not.
   //  debug_only(static int findType(const char* typeName);)
   static int findType(const char* typeName);
 };

 // This utility macro quotes the passed string
 #define QUOTE(x) #x

 //--------------------------------------------------------------------------------
 // VMStructEntry macros
 //

 // This macro generates a VMStructEntry line for a nonstatic field
 #define GENERATE_NONSTATIC_VM_STRUCT_ENTRY(typeName, fieldName, type)              \
  { QUOTE(typeName), QUOTE(fieldName), QUOTE(type), 0, offset_of(typeName, fieldName), NULL },

 // This macro generates a VMStructEntry line for a static field
 #define GENERATE_STATIC_VM_STRUCT_ENTRY(typeName, fieldName, type)                 \
  { QUOTE(typeName), QUOTE(fieldName), QUOTE(type), 1, 0, &typeName::fieldName },

 // This macro generates a VMStructEntry line for a static pointer volatile field,
 // e.g.: "static ObjectMonitor * volatile gBlockList;"
 #define GENERATE_STATIC_PTR_VOLATILE_VM_STRUCT_ENTRY(typeName, fieldName, type)    \
  { QUOTE(typeName), QUOTE(fieldName), QUOTE(type), 1, 0, (void *)&typeName::fieldName },

 // This macro generates a VMStructEntry line for an unchecked
 // nonstatic field, in which the size of the type is also specified.
 // The type string is given as NULL, indicating an "opaque" type.
 #define GENERATE_UNCHECKED_NONSTATIC_VM_STRUCT_ENTRY(typeName, fieldName, size)    \
   { QUOTE(typeName), QUOTE(fieldName), NULL, 0, offset_of(typeName, fieldName), NULL },

 // This macro generates a VMStructEntry line for an unchecked
 // static field, in which the size of the type is also specified.
 // The type string is given as NULL, indicating an "opaque" type.
 #define GENERATE_UNCHECKED_STATIC_VM_STRUCT_ENTRY(typeName, fieldName, size)       \
  { QUOTE(typeName), QUOTE(fieldName), NULL, 1, 0, (void*) &typeName::fieldName },

 // This macro generates the sentinel value indicating the end of the list
 #define GENERATE_VM_STRUCT_LAST_ENTRY() \
  { NULL, NULL, NULL, 0, 0, NULL }

 // This macro checks the type of a VMStructEntry by comparing pointer types
 #define CHECK_NONSTATIC_VM_STRUCT_ENTRY(typeName, fieldName, type)                 \
  {typeName *dummyObj = NULL; type* dummy = &dummyObj->fieldName;                   \
   assert(offset_of(typeName, fieldName) < sizeof(typeName), "Illegal nonstatic struct entry, field offset too large"); }

 // This macro checks the type of a volatile VMStructEntry by comparing pointer types
 #define CHECK_VOLATILE_NONSTATIC_VM_STRUCT_ENTRY(typeName, fieldName, type)        \
  {typedef type dummyvtype; typeName *dummyObj = NULL; volatile dummyvtype* dummy = &dummyObj->fieldName; }

 // This macro checks the type of a static VMStructEntry by comparing pointer types
 #define CHECK_STATIC_VM_STRUCT_ENTRY(typeName, fieldName, type)                    \
  {type* dummy = &typeName::fieldName; }

 // This macro checks the type of a static pointer volatile VMStructEntry by comparing pointer types,
 // e.g.: "static ObjectMonitor * volatile gBlockList;"
 #define CHECK_STATIC_PTR_VOLATILE_VM_STRUCT_ENTRY(typeName, fieldName, type)       \
  {type volatile * dummy = &typeName::fieldName; }

 // This macro ensures the type of a field and its containing type are
 // present in the type table. The assertion string is shorter than
 // preferable because (incredibly) of a bug in Solstice NFS client
 // which seems to prevent very long lines from compiling. This assertion
 // means that an entry in VMStructs::localHotSpotVMStructs[] was not
 // found in VMStructs::localHotSpotVMTypes[].
 #define ENSURE_FIELD_TYPE_PRESENT(typeName, fieldName, type)                       \
  { assert(findType(QUOTE(typeName)) != 0, "type \"" QUOTE(typeName) "\" not found in type table"); \
    assert(findType(QUOTE(type)) != 0, "type \"" QUOTE(type) "\" not found in type table"); }

 // This is a no-op macro for unchecked fields
 #define CHECK_NO_OP(a, b, c)


 //--------------------------------------------------------------------------------
 // VMTypeEntry macros
 //

 #define GENERATE_VM_TYPE_ENTRY(type, superclass) \
  { QUOTE(type), QUOTE(superclass), 0, 0, 0, sizeof(type) },

 #define GENERATE_TOPLEVEL_VM_TYPE_ENTRY(type) \
  { QUOTE(type), NULL,              0, 0, 0, sizeof(type) },

 #define GENERATE_OOP_VM_TYPE_ENTRY(type) \
  { QUOTE(type), NULL,              1, 0, 0, sizeof(type) },

 #define GENERATE_INTEGER_VM_TYPE_ENTRY(type) \
  { QUOTE(type), NULL,              0, 1, 0, sizeof(type) },

 #define GENERATE_UNSIGNED_INTEGER_VM_TYPE_ENTRY(type) \
  { QUOTE(type), NULL,              0, 1, 1, sizeof(type) },

 #define GENERATE_VM_TYPE_LAST_ENTRY() \
  { NULL, NULL, 0, 0, 0, 0 }

 #define CHECK_VM_TYPE_ENTRY(type, superclass) \
  { type* dummyObj = NULL; superclass* dummySuperObj = dummyObj; }

 #define CHECK_VM_TYPE_NO_OP(a)
 #define CHECK_SINGLE_ARG_VM_TYPE_NO_OP(a)


 //--------------------------------------------------------------------------------
 // VMIntConstantEntry macros
 //

 #define GENERATE_VM_INT_CONSTANT_ENTRY(name) \
  { QUOTE(name), (int32_t) name },

 #define GENERATE_VM_INT_CONSTANT_WITH_VALUE_ENTRY(name, value) \
  { (name), (int32_t)(value) },

 #define GENERATE_PREPROCESSOR_VM_INT_CONSTANT_ENTRY(name, value) \
  { name, (int32_t) value },

 // This macro generates the sentinel value indicating the end of the list
 #define GENERATE_VM_INT_CONSTANT_LAST_ENTRY() \
  { NULL, 0 }


 //--------------------------------------------------------------------------------
 // VMLongConstantEntry macros
 //

 #define GENERATE_VM_LONG_CONSTANT_ENTRY(name) \
   { QUOTE(name), name },

 #define GENERATE_PREPROCESSOR_VM_LONG_CONSTANT_ENTRY(name, value) \
   { name, value },

 // This macro generates the sentinel value indicating the end of the list
 #define GENERATE_VM_LONG_CONSTANT_LAST_ENTRY() \
  { NULL, 0 }


 //--------------------------------------------------------------------------------
 // VMAddressEntry macros
 //

 #define GENERATE_VM_ADDRESS_ENTRY(name) \
   { QUOTE(name), (void*) (name) },

 #define GENERATE_PREPROCESSOR_VM_ADDRESS_ENTRY(name, value) \
   { name, (void*) (value) },

 #define GENERATE_VM_FUNCTION_ENTRY(name) \
   { QUOTE(name), CAST_FROM_FN_PTR(void*, &(name)) },

 // This macro generates the sentinel value indicating the end of the list
 #define GENERATE_VM_ADDRESS_LAST_ENTRY() \
  { NULL, NULL }

 #endif // SHARE_VM_RUNTIME_VMSTRUCTS_HPP
	/*
	* Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved.
	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
	*
	* This code 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 code 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 in the LICENSE file that
	* accompanied this code).
	*
	* 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
	* or visit www.oracle.com if you need additional information or have any
	* questions.
	*
	*/

	#ifndef SHARE_VM_RUNTIME_VMSTRUCTS_HPP
	#define SHARE_VM_RUNTIME_VMSTRUCTS_HPP

	#include "utilities/debug.hpp"
	#include "utilities/globalDefinitions.hpp"
	#ifdef COMPILER1
	#include "c1/c1_Runtime1.hpp"
	#endif

	// This table encapsulates the debugging information required by the
	// serviceability agent in order to run. Specifically, we need to
	// understand the layout of certain C data structures (offsets, in
	// bytes, of their fields.)
	//
	// There are alternatives for the design of this mechanism, including
	// parsing platform-specific debugging symbols from a debug build into
	// a program database. While this current mechanism can be considered
	// to be a workaround for the inability to debug arbitrary C and C++
	// programs at the present time, it does have certain advantages.
	// First, it is platform-independent, which will vastly simplify the
	// initial bringup of the system both now and on future platforms.
	// Second, it is embedded within the VM, as opposed to being in a
	// separate program database; experience has shown that whenever
	// portions of a system are decoupled, version skew is problematic.
	// Third, generating a program database, for example for a product
	// build, would probably require two builds to be done: the desired
	// product build as well as an intermediary build with the PRODUCT
	// flag turned on but also compiled with -g, leading to a doubling of
	// the time required to get a serviceability agent-debuggable product
	// build. Fourth, and very significantly, this table probably
	// preserves more information about field types than stabs do; for
	// example, it preserves the fact that a field is a "jlong" rather
	// than transforming the type according to the typedef in jni_md.h,
	// which allows the Java-side code to identify "Java-sized" fields in
	// C++ data structures. If the symbol parsing mechanism was redone
	// using stabs, it might still be necessary to have a table somewhere
	// containing this information.
	//
	// Do not change the sizes or signedness of the integer values in
	// these data structures; they are fixed over in the serviceability
	// agent's Java code (for bootstrapping).

	typedef struct {
	const char* typeName; // The type name containing the given field (example: "Klass")
	const char* fieldName; // The field name within the type (example: "_name")
	const char* typeString; // Quoted name of the type of this field (example: "Symbol*";
	// parsed in Java to ensure type correctness
	int32_t isStatic; // Indicates whether following field is an offset or an address
	uint64_t offset; // Offset of field within structure; only used for nonstatic fields
	void* address; // Address of field; only used for static fields
	// ("offset" can not be reused because of apparent SparcWorks compiler bug
	// in generation of initializer data)
	} VMStructEntry;

	typedef struct {
	const char* typeName; // Type name (example: "Method")
	const char* superclassName; // Superclass name, or null if none (example: "oopDesc")
	int32_t isOopType; // Does this type represent an oop typedef? (i.e., "Method*" or
	// "Klass*", but NOT "Method")
	int32_t isIntegerType; // Does this type represent an integer type (of arbitrary size)?
	int32_t isUnsigned; // If so, is it unsigned?
	uint64_t size; // Size, in bytes, of the type
	} VMTypeEntry;

	typedef struct {
	const char* name; // Name of constant (example: "_thread_in_native")
	int32_t value; // Value of constant
	} VMIntConstantEntry;

	typedef struct {
	const char* name; // Name of constant (example: "_thread_in_native")
	uint64_t value; // Value of constant
	} VMLongConstantEntry;

	typedef struct {
	const char* name; // Name of address (example: "SharedRuntime::register_finalizer")
	void* value; // Value of address
	} VMAddressEntry;

	// This class is a friend of most classes, to be able to access
	// private fields
	class VMStructs {
	public:
	// The last entry is identified over in the serviceability agent by
	// the fact that it has a NULL fieldName
	static VMStructEntry localHotSpotVMStructs[];
	// The function to get localHotSpotVMStructs length
	static size_t localHotSpotVMStructsLength();

	// The last entry is identified over in the serviceability agent by
	// the fact that it has a NULL typeName
	static VMTypeEntry localHotSpotVMTypes[];
	// The function to get localHotSpotVMTypes length
	static size_t localHotSpotVMTypesLength();

	// Table of integer constants required by the serviceability agent.
	// The last entry is identified over in the serviceability agent by
	// the fact that it has a NULL typeName
	static VMIntConstantEntry localHotSpotVMIntConstants[];
	// The function to get localHotSpotVMIntConstants length
	static size_t localHotSpotVMIntConstantsLength();

	// Table of long constants required by the serviceability agent.
	// The last entry is identified over in the serviceability agent by
	// the fact that it has a NULL typeName
	static VMLongConstantEntry localHotSpotVMLongConstants[];
	// The function to get localHotSpotVMIntConstants length
	static size_t localHotSpotVMLongConstantsLength();

	/**
	* Table of addresses.
	*/
	static VMAddressEntry localHotSpotVMAddresses[];

	// This is used to run any checking code necessary for validation of
	// the data structure (debug build only)
	static void init();

	#ifndef PRODUCT
	// Execute unit tests
	static void test();
	#endif

	private:
	// Look up a type in localHotSpotVMTypes using strcmp() (debug build only).
	// Returns 1 if found, 0 if not.
	// debug_only(static int findType(const char* typeName);)
	static int findType(const char* typeName);
	};

	// This utility macro quotes the passed string
	#define QUOTE(x) #x

	//--------------------------------------------------------------------------------
	// VMStructEntry macros
	//

	// This macro generates a VMStructEntry line for a nonstatic field
	#define GENERATE_NONSTATIC_VM_STRUCT_ENTRY(typeName, fieldName, type) \
	{ QUOTE(typeName), QUOTE(fieldName), QUOTE(type), 0, offset_of(typeName, fieldName), NULL },

	// This macro generates a VMStructEntry line for a static field
	#define GENERATE_STATIC_VM_STRUCT_ENTRY(typeName, fieldName, type) \
	{ QUOTE(typeName), QUOTE(fieldName), QUOTE(type), 1, 0, &typeName::fieldName },

	// This macro generates a VMStructEntry line for a static pointer volatile field,
	// e.g.: "static ObjectMonitor * volatile gBlockList;"
	#define GENERATE_STATIC_PTR_VOLATILE_VM_STRUCT_ENTRY(typeName, fieldName, type) \
	{ QUOTE(typeName), QUOTE(fieldName), QUOTE(type), 1, 0, (void *)&typeName::fieldName },

	// This macro generates a VMStructEntry line for an unchecked
	// nonstatic field, in which the size of the type is also specified.
	// The type string is given as NULL, indicating an "opaque" type.
	#define GENERATE_UNCHECKED_NONSTATIC_VM_STRUCT_ENTRY(typeName, fieldName, size) \
	{ QUOTE(typeName), QUOTE(fieldName), NULL, 0, offset_of(typeName, fieldName), NULL },

	// This macro generates a VMStructEntry line for an unchecked
	// static field, in which the size of the type is also specified.
	// The type string is given as NULL, indicating an "opaque" type.
	#define GENERATE_UNCHECKED_STATIC_VM_STRUCT_ENTRY(typeName, fieldName, size) \
	{ QUOTE(typeName), QUOTE(fieldName), NULL, 1, 0, (void*) &typeName::fieldName },

	// This macro generates the sentinel value indicating the end of the list
	#define GENERATE_VM_STRUCT_LAST_ENTRY() \
	{ NULL, NULL, NULL, 0, 0, NULL }

	// This macro checks the type of a VMStructEntry by comparing pointer types
	#define CHECK_NONSTATIC_VM_STRUCT_ENTRY(typeName, fieldName, type) \
	{typeName dummyObj = NULL; type dummy = &dummyObj->fieldName; \
	assert(offset_of(typeName, fieldName) < sizeof(typeName), "Illegal nonstatic struct entry, field offset too large"); }

	// This macro checks the type of a volatile VMStructEntry by comparing pointer types
	#define CHECK_VOLATILE_NONSTATIC_VM_STRUCT_ENTRY(typeName, fieldName, type) \
	{typedef type dummyvtype; typeName dummyObj = NULL; volatile dummyvtype dummy = &dummyObj->fieldName; }

	// This macro checks the type of a static VMStructEntry by comparing pointer types
	#define CHECK_STATIC_VM_STRUCT_ENTRY(typeName, fieldName, type) \
	{type* dummy = &typeName::fieldName; }

	// This macro checks the type of a static pointer volatile VMStructEntry by comparing pointer types,
	// e.g.: "static ObjectMonitor * volatile gBlockList;"
	#define CHECK_STATIC_PTR_VOLATILE_VM_STRUCT_ENTRY(typeName, fieldName, type) \
	{type volatile * dummy = &typeName::fieldName; }

	// This macro ensures the type of a field and its containing type are
	// present in the type table. The assertion string is shorter than
	// preferable because (incredibly) of a bug in Solstice NFS client
	// which seems to prevent very long lines from compiling. This assertion
	// means that an entry in VMStructs::localHotSpotVMStructs[] was not
	// found in VMStructs::localHotSpotVMTypes[].
	#define ENSURE_FIELD_TYPE_PRESENT(typeName, fieldName, type) \
	{ assert(findType(QUOTE(typeName)) != 0, "type \"" QUOTE(typeName) "\" not found in type table"); \
	assert(findType(QUOTE(type)) != 0, "type \"" QUOTE(type) "\" not found in type table"); }

	// This is a no-op macro for unchecked fields
	#define CHECK_NO_OP(a, b, c)


	//--------------------------------------------------------------------------------
	// VMTypeEntry macros
	//

	#define GENERATE_VM_TYPE_ENTRY(type, superclass) \
	{ QUOTE(type), QUOTE(superclass), 0, 0, 0, sizeof(type) },

	#define GENERATE_TOPLEVEL_VM_TYPE_ENTRY(type) \
	{ QUOTE(type), NULL, 0, 0, 0, sizeof(type) },

	#define GENERATE_OOP_VM_TYPE_ENTRY(type) \
	{ QUOTE(type), NULL, 1, 0, 0, sizeof(type) },

	#define GENERATE_INTEGER_VM_TYPE_ENTRY(type) \
	{ QUOTE(type), NULL, 0, 1, 0, sizeof(type) },

	#define GENERATE_UNSIGNED_INTEGER_VM_TYPE_ENTRY(type) \
	{ QUOTE(type), NULL, 0, 1, 1, sizeof(type) },

	#define GENERATE_VM_TYPE_LAST_ENTRY() \
	{ NULL, NULL, 0, 0, 0, 0 }

	#define CHECK_VM_TYPE_ENTRY(type, superclass) \
	{ type* dummyObj = NULL; superclass* dummySuperObj = dummyObj; }

	#define CHECK_VM_TYPE_NO_OP(a)
	#define CHECK_SINGLE_ARG_VM_TYPE_NO_OP(a)


	//--------------------------------------------------------------------------------
	// VMIntConstantEntry macros
	//

	#define GENERATE_VM_INT_CONSTANT_ENTRY(name) \
	{ QUOTE(name), (int32_t) name },

	#define GENERATE_VM_INT_CONSTANT_WITH_VALUE_ENTRY(name, value) \
	{ (name), (int32_t)(value) },

	#define GENERATE_PREPROCESSOR_VM_INT_CONSTANT_ENTRY(name, value) \
	{ name, (int32_t) value },

	// This macro generates the sentinel value indicating the end of the list
	#define GENERATE_VM_INT_CONSTANT_LAST_ENTRY() \
	{ NULL, 0 }


	//--------------------------------------------------------------------------------
	// VMLongConstantEntry macros
	//

	#define GENERATE_VM_LONG_CONSTANT_ENTRY(name) \
	{ QUOTE(name), name },

	#define GENERATE_PREPROCESSOR_VM_LONG_CONSTANT_ENTRY(name, value) \
	{ name, value },

	// This macro generates the sentinel value indicating the end of the list
	#define GENERATE_VM_LONG_CONSTANT_LAST_ENTRY() \
	{ NULL, 0 }


	//--------------------------------------------------------------------------------
	// VMAddressEntry macros
	//

	#define GENERATE_VM_ADDRESS_ENTRY(name) \
	{ QUOTE(name), (void*) (name) },

	#define GENERATE_PREPROCESSOR_VM_ADDRESS_ENTRY(name, value) \
	{ name, (void*) (value) },

	#define GENERATE_VM_FUNCTION_ENTRY(name) \
	{ QUOTE(name), CAST_FROM_FN_PTR(void*, &(name)) },

	// This macro generates the sentinel value indicating the end of the list
	#define GENERATE_VM_ADDRESS_LAST_ENTRY() \
	{ NULL, NULL }

	#endif // SHARE_VM_RUNTIME_VMSTRUCTS_HPP