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Diffstat (limited to 'gcc-4.2.1/libjava/include/java-interp.h')
| -rw-r--r-- | gcc-4.2.1/libjava/include/java-interp.h | 337 |
1 files changed, 0 insertions, 337 deletions
diff --git a/gcc-4.2.1/libjava/include/java-interp.h b/gcc-4.2.1/libjava/include/java-interp.h deleted file mode 100644 index 74846c9f6..000000000 --- a/gcc-4.2.1/libjava/include/java-interp.h +++ /dev/null @@ -1,337 +0,0 @@ -// java-interp.h - Header file for the bytecode interpreter. -*- c++ -*- - -/* Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 Free Software Foundation - - This file is part of libgcj. - -This software is copyrighted work licensed under the terms of the -Libgcj License. Please consult the file "LIBGCJ_LICENSE" for -details. */ - -#ifndef __JAVA_INTERP_H__ -#define __JAVA_INTERP_H__ - -#include <jvm.h> -#include <java-cpool.h> -#include <gnu/gcj/runtime/NameFinder.h> - -#ifdef INTERPRETER - -#pragma interface - -#include <java/lang/Class.h> -#include <java/lang/ClassLoader.h> -#include <java/lang/reflect/Modifier.h> -#include <java/lang/Thread.h> -#include <gnu/gcj/RawData.h> - -// Define this to get the direct-threaded interpreter. If undefined, -// we revert to a basic bytecode interpreter. The former is faster -// but uses more memory. -#define DIRECT_THREADED - -#include <ffi.h> - -struct _Jv_ResolvedMethod; - -void _Jv_InitInterpreter (); -void _Jv_DefineClass (jclass, jbyteArray, jint, jint, - java::security::ProtectionDomain *, - _Jv_Utf8Const **); - -void _Jv_InitField (jobject, jclass, int); -void * _Jv_AllocMethodInvocation (jsize size); -int _Jv_count_arguments (_Jv_Utf8Const *signature, - jboolean staticp = true); -void _Jv_VerifyMethod (_Jv_InterpMethod *method); -void _Jv_CompileMethod (_Jv_InterpMethod* method); - -/* the interpreter is written in C++, primarily because it makes it easy for - * the entire thing to be "friend" with class Class. */ - -class _Jv_InterpClass; -class _Jv_InterpMethod; - -// Before a method is "compiled" we store values as the bytecode PC, -// an int. Afterwards we store them as pointers into the prepared -// code itself. -union _Jv_InterpPC -{ - int i; - void *p; -}; - -class _Jv_InterpException -{ - _Jv_InterpPC start_pc; - _Jv_InterpPC end_pc; - _Jv_InterpPC handler_pc; - _Jv_InterpPC handler_type; - - friend class _Jv_ClassReader; - friend class _Jv_InterpMethod; - friend class _Jv_BytecodeVerifier; -}; - -// Base class for method representations. Subclasses are interpreted -// and JNI methods. -class _Jv_MethodBase -{ -protected: - // The class which defined this method. - jclass defining_class; - - // The method description. - _Jv_Method *self; - - // Size of raw arguments. - _Jv_ushort args_raw_size; - - friend class _Jv_InterpreterEngine; - -public: - _Jv_Method *get_method () - { - return self; - } -}; - -// The type of the PC depends on whether we're doing direct threading -// or a more ordinary bytecode interpreter. -#ifdef DIRECT_THREADED -// Slot in the "compiled" form of the bytecode. -union insn_slot -{ - // Address of code. - void *insn; - // An integer value used by an instruction. - jint int_val; - // A pointer value used by an instruction. - void *datum; -}; - -typedef insn_slot *pc_t; -#else -typedef unsigned char *pc_t; -#endif - - -// This structure holds the bytecode pc and corresponding source code -// line number. An array (plus length field) of this structure is put -// in each _Jv_InterpMethod and used to resolve the (internal) program -// counter of the interpreted method to an actual java source file -// line. -struct _Jv_LineTableEntry -{ - union - { - pc_t pc; - int bytecode_pc; - }; - int line; -}; - -class _Jv_InterpMethod : public _Jv_MethodBase -{ - // Breakpoint instruction - static pc_t breakpoint_insn; -#ifdef DIRECT_THREADED - static insn_slot bp_insn_slot; -#else - static unsigned char bp_insn_opcode; -#endif - - _Jv_ushort max_stack; - _Jv_ushort max_locals; - int code_length; - - _Jv_ushort exc_count; - bool is_15; - - // Length of the line_table - when this is zero then line_table is NULL. - int line_table_len; - _Jv_LineTableEntry *line_table; - - pc_t prepared; - int number_insn_slots; - - unsigned char* bytecode () - { - return - ((unsigned char*)this) - + ROUND((sizeof (_Jv_InterpMethod) - + exc_count*sizeof (_Jv_InterpException)), 4); - } - - _Jv_InterpException * exceptions () - { - return (_Jv_InterpException*) (this+1); - } - - static size_t size (int exc_count, int code_length) - { - return - ROUND ((sizeof (_Jv_InterpMethod) - + (exc_count * sizeof (_Jv_InterpException))), 4) - + code_length; - } - - // return the method's invocation pointer (a stub). - void *ncode (); - void compile (const void * const *); - - static void run_normal (ffi_cif*, void*, ffi_raw*, void*); - static void run_synch_object (ffi_cif*, void*, ffi_raw*, void*); - static void run_class (ffi_cif*, void*, ffi_raw*, void*); - static void run_synch_class (ffi_cif*, void*, ffi_raw*, void*); - - static void run_normal_debug (ffi_cif*, void*, ffi_raw*, void*); - static void run_synch_object_debug (ffi_cif*, void*, ffi_raw*, void*); - static void run_class_debug (ffi_cif*, void*, ffi_raw*, void*); - static void run_synch_class_debug (ffi_cif*, void*, ffi_raw*, void*); - - static void run (void *, ffi_raw *, _Jv_InterpMethod *); - static void run_debug (void *, ffi_raw *, _Jv_InterpMethod *); - - - - // Returns source file line number for given PC value, or -1 if line - // number info is unavailable. - int get_source_line(pc_t mpc); - - // Convenience function for indexing bytecode PC/insn slots in - // line tables for JDWP - jlong insn_index (pc_t pc); - - public: - - /* Get the line table for this method. - * start is the lowest index in the method - * end is the highest index in the method - * line_numbers is an array to hold the list of source line numbers - * code_indices is an array to hold the corresponding list of code indices - */ - void get_line_table (jlong& start, jlong& end, jintArray& line_numbers, - jlongArray& code_indices); - - /* Installs a break instruction at the given code index. Returns - the pc_t of the breakpoint or NULL if index is invalid. */ - pc_t install_break (jlong index); - - // Gets the instruction at the given index - pc_t get_insn (jlong index); - - /* Writes the given instruction at the given code index. Returns - the insn or NULL if index is invalid. */ - pc_t set_insn (jlong index, pc_t insn); - -#ifdef DIRECT_THREADED - friend void _Jv_CompileMethod (_Jv_InterpMethod*); -#endif - - friend class _Jv_ClassReader; - friend class _Jv_BytecodeVerifier; - friend class _Jv_StackTrace; - friend class _Jv_InterpreterEngine; - -#ifdef JV_MARKOBJ_DECL - friend JV_MARKOBJ_DECL; -#endif -}; - -class _Jv_InterpClass -{ - _Jv_MethodBase **interpreted_methods; - _Jv_ushort *field_initializers; - jstring source_file_name; - - friend class _Jv_ClassReader; - friend class _Jv_InterpMethod; - friend class _Jv_StackTrace; - friend class _Jv_InterpreterEngine; - - friend void _Jv_InitField (jobject, jclass, int); -#ifdef JV_MARKOBJ_DECL - friend JV_MARKOBJ_DECL; -#endif - - friend _Jv_MethodBase ** _Jv_GetFirstMethod (_Jv_InterpClass *klass); -}; - -extern inline _Jv_MethodBase ** -_Jv_GetFirstMethod (_Jv_InterpClass *klass) -{ - return klass->interpreted_methods; -} - -struct _Jv_ResolvedMethod -{ - jint stack_item_count; - jclass klass; - _Jv_Method* method; - - // a resolved method holds the cif in-line, so that _Jv_MarkObj just needs - // to mark the resolved method to hold on to the cif. Some memory could be - // saved by keeping a cache of cif's, since many will be the same. - ffi_cif cif; - ffi_type * arg_types[0]; -}; - -class _Jv_JNIMethod : public _Jv_MethodBase -{ - // The underlying function. If NULL we have to look for the - // function. - void *function; - - // This is the CIF used by the JNI function. - ffi_cif jni_cif; - - // These are the argument types used by the JNI function. - ffi_type **jni_arg_types; - - // This function is used when making a JNI call from the interpreter. - static void call (ffi_cif *, void *, ffi_raw *, void *); - - void *ncode (); - - friend class _Jv_ClassReader; - friend class _Jv_InterpreterEngine; - -#ifdef JV_MARKOBJ_DECL - friend JV_MARKOBJ_DECL; -#endif - -public: - // FIXME: this is ugly. - void set_function (void *f) - { - function = f; - } -}; - -// The interpreted call stack, represented by a linked list of frames. -struct _Jv_InterpFrame -{ - _Jv_InterpMethod *self; - java::lang::Thread *thread; - _Jv_InterpFrame *next; - pc_t pc; - - _Jv_InterpFrame (_Jv_InterpMethod *s, java::lang::Thread *thr) - { - self = s; - thread = thr; - next = (_Jv_InterpFrame *) thr->interp_frame; - thr->interp_frame = (gnu::gcj::RawData *) this; - pc = NULL; - } - - ~_Jv_InterpFrame () - { - thread->interp_frame = (gnu::gcj::RawData *) next; - } -}; - -#endif /* INTERPRETER */ - -#endif /* __JAVA_INTERP_H__ */ |