/* src/vm/global.h - global definitions Copyright (C) 1996-2005, 2007, 2006 R. Grafl, A. Krall, C. Kruegel, C. Oates, R. Obermaisser, M. Platter, M. Probst, S. Ring, E. Steiner, C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich, J. Wenninger, Institut f. Computersprachen - TU Wien This file is part of CACAO. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. 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 for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. $Id: global.h 8161 2007-06-28 10:30:08Z twisti $ */ #ifndef _GLOBAL_H #define _GLOBAL_H #include "config.h" #include "vm/types.h" /* additional data types ******************************************************/ typedef void *voidptr; /* generic pointer */ typedef void (*functionptr) (void); /* generic function pointer */ typedef u1* methodptr; typedef unsigned int bool; /* boolean data type */ #define true 1 #define false 0 #if defined(ENABLE_SSA) /* immediate to get an addidional target Local Var Index */ /* for IINC in Combination with SSA */ struct imm { s4 i; s4 op1_t; }; #endif /* immediate data union */ typedef union { s4 i; s8 l; float f; double d; void *a; functionptr fp; u1 b[8]; #if defined(ENABLE_SSA) struct imm _i; #endif } imm_union; /* alignment macros ***********************************************************/ #define ALIGN_2(a) do { if ((a) & 0x1) (a)++; } while (0) /* forward typedefs ***********************************************************/ typedef struct java_objectheader java_objectheader; typedef struct java_objectarray java_objectarray; #define MAX_ALIGN 8 /* most generic alignment for JavaVM values */ /* basic data types ***********************************************************/ /* The JavaVM types must numbered in the same order as the ICMD_Ixxx to ICMD_Axxx instructions (LOAD and STORE). All other types can be numbered arbitrarily. */ #define TYPE_INT 0 #define TYPE_LNG 1 #define TYPE_FLT 2 #define TYPE_DBL 3 #define TYPE_ADR 4 #define TYPE_RET 8 /* must not share bits with TYPE_FLT or TYPE_LNG */ #define TYPE_VOID 10 #define IS_INT_LNG_TYPE(a) (!((a) & TYPE_FLT)) #define IS_FLT_DBL_TYPE(a) ((a) & TYPE_FLT) #define IS_2_WORD_TYPE(a) ((a) & TYPE_LNG) #define IS_INT_TYPE(a) ((a) == TYPE_INT) #define IS_LNG_TYPE(a) ((a) == TYPE_LNG) #define IS_FLT_TYPE(a) ((a) == TYPE_FLT) #define IS_DBL_TYPE(a) ((a) == TYPE_DBL) #define IS_ADR_TYPE(a) ((a) == TYPE_ADR) #define IS_VOID_TYPE(a) ((a) == TYPE_VOID) /* some Java related defines **************************************************/ #define JAVA_VERSION "1.5.0" /* this version is supported by CACAO */ #define CLASS_VERSION "50.0" /* Java class file constants **************************************************/ #define MAGIC 0xCAFEBABE #define MAJOR_VERSION 50 #define MINOR_VERSION 0 /* Constant pool tags *********************************************************/ #define CONSTANT_Class 7 #define CONSTANT_Fieldref 9 #define CONSTANT_Methodref 10 #define CONSTANT_InterfaceMethodref 11 #define CONSTANT_String 8 #define CONSTANT_Integer 3 #define CONSTANT_Float 4 #define CONSTANT_Long 5 #define CONSTANT_Double 6 #define CONSTANT_NameAndType 12 #define CONSTANT_Utf8 1 #define CONSTANT_UNUSED 0 /* Class/Field/Method access and property flags *******************************/ #define ACC_UNDEF -1 /* used internally */ #define ACC_NONE 0 /* used internally */ #define ACC_PUBLIC 0x0001 #define ACC_PRIVATE 0x0002 #define ACC_PROTECTED 0x0004 #define ACC_STATIC 0x0008 #define ACC_FINAL 0x0010 #define ACC_SUPER 0x0020 #define ACC_SYNCHRONIZED 0x0020 #define ACC_VOLATILE 0x0040 #define ACC_BRIDGE 0x0040 #define ACC_TRANSIENT 0x0080 #define ACC_VARARGS 0x0080 #define ACC_NATIVE 0x0100 #define ACC_INTERFACE 0x0200 #define ACC_ABSTRACT 0x0400 #define ACC_STRICT 0x0800 #define ACC_SYNTHETIC 0x1000 #define ACC_ANNOTATION 0x2000 #define ACC_ENUM 0x4000 #define ACC_MIRANDA 0x8000 /* special flags used in classinfo ********************************************/ #define ACC_CLASS_REFLECT_MASK 0x0000ffff/* flags reported by reflection */ #define ACC_CLASS_PRIMITIVE 0x00010000/* class is a primitive class */ #define ACC_CLASS_HAS_POINTERS 0x00020000/* instance contains pointers */ #define ACC_CLASS_REFERENCE_MASK 0x001c0000 #define ACC_CLASS_REFERENCE_SOFT 0x00040000 #define ACC_CLASS_REFERENCE_WEAK 0x00080000 #define ACC_CLASS_REFERENCE_PHANTOM 0x00100000 /* special flags used in methodinfo *******************************************/ #define ACC_METHOD_IMPLEMENTED 0x00010000 /* there is an implementation */ #define ACC_METHOD_MONOMORPHIC 0x00020000 /* currently monomorphic method */ /* data structures of the runtime system **************************************/ /* java_objectheader *********************************************************** All objects (and arrays) which resides on the heap need the following header at the beginning of the data structure. TODO: Include detailed description from the Wiki (ObjectHeader) here. *******************************************************************************/ #define HDRFLAG_FLC 0x01 struct java_objectheader { /* header for all objects */ struct _vftbl *vftbl; /* pointer to virtual function table */ #if defined(ENABLE_THREADS) struct lock_record_t *monitorPtr; #endif #if defined(ENABLE_THREADS) || defined(ENABLE_GC_CACAO) ptrint hdrflags; /* word containing the FLC and GC bits */ #endif }; /* arrays ********************************************************************** All arrays are objects (they need the object header with a pointer to a vftbl (array class table). There is one class for each array type. The array type is described by an arraydescriptor struct which is referenced by the vftbl. */ typedef struct java_arrayheader { /* header for all arrays */ java_objectheader objheader; /* object header */ s4 size; /* array size */ } java_arrayheader; /* structs for all kinds of arrays ********************************************/ /* booleanarray and bytearray need identical memory layout (access methods use the same machine code */ typedef struct java_booleanarray { java_arrayheader header; u1 data[1]; } java_booleanarray; typedef struct java_bytearray { java_arrayheader header; s1 data[1]; } java_bytearray; typedef struct java_chararray { java_arrayheader header; u2 data[1]; } java_chararray; typedef struct java_shortarray { java_arrayheader header; s2 data[1]; } java_shortarray; typedef struct java_intarray { java_arrayheader header; s4 data[1]; } java_intarray; typedef struct java_longarray { java_arrayheader header; s8 data[1]; } java_longarray; typedef struct java_floatarray { java_arrayheader header; float data[1]; } java_floatarray; typedef struct java_doublearray { java_arrayheader header; double data[1]; } java_doublearray; /* objectarray and arrayarray need identical memory layout (access methods use the same machine code */ struct java_objectarray { java_arrayheader header; java_objectheader *data[1]; }; /* global constants related to the verifier ***********************************/ /* The verifier needs additional variables in the variable array. Since these */ /* must be reserved and set by parse.c and stack.c, we define these numbers */ /* here to avoid mysterious hard-coded constants. */ /* stack.c needs an extra variable if the verifier is disabled. */ #if defined(ENABLE_VERIFIER) # define VERIFIER_EXTRA_LOCALS 1 # define VERIFIER_EXTRA_VARS 1 # define STACK_EXTRA_VARS 0 #else # define VERIFIER_EXTRA_LOCALS 0 # define VERIFIER_EXTRA_VARS 0 # define STACK_EXTRA_VARS 1 #endif #endif /* _GLOBAL_H */ /* * These are local overrides for various environment variables in Emacs. * Please do not remove this and leave it at the end of the file, where * Emacs will automagically detect them. * --------------------------------------------------------------------- * Local variables: * mode: c * indent-tabs-mode: t * c-basic-offset: 4 * tab-width: 4 * End: * vim:noexpandtab:sw=4:ts=4: */