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/*
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* Copyright 2002-2010 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*
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*/
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#ifdef CC_INTERP
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// CVM definitions find hotspot equivalents...
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union VMJavaVal64 {
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jlong l;
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jdouble d;
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uint32_t v[2];
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};
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typedef class BytecodeInterpreter* interpreterState;
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struct call_message {
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class methodOopDesc* _callee; /* method to call during call_method request */
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address _callee_entry_point; /* address to jump to for call_method request */
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int _bcp_advance; /* size of the invoke bytecode operation */
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};
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struct osr_message {
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address _osr_buf; /* the osr buffer */
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address _osr_entry; /* the entry to the osr method */
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};
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struct osr_result {
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nmethod* nm; /* osr nmethod */
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address return_addr; /* osr blob return address */
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};
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// Result returned to frame manager
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union frame_manager_message {
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call_message _to_call; /* describes callee */
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Bytecodes::Code _return_kind; /* i_return, a_return, ... */
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osr_message _osr; /* describes the osr */
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osr_result _osr_result; /* result of OSR request */
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};
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class BytecodeInterpreter : StackObj {
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friend class SharedRuntime;
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friend class AbstractInterpreterGenerator;
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friend class CppInterpreterGenerator;
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friend class InterpreterGenerator;
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friend class InterpreterMacroAssembler;
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friend class frame;
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friend class VMStructs;
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public:
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enum messages {
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no_request = 0, // unused
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initialize, // Perform one time interpreter initializations (assumes all switches set)
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// status message to C++ interpreter
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method_entry, // initial method entry to interpreter
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method_resume, // frame manager response to return_from_method request (assuming a frame to resume)
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deopt_resume, // returning from a native call into a deopted frame
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deopt_resume2, // deopt resume as a result of a PopFrame
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got_monitors, // frame manager response to more_monitors request
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rethrow_exception, // unwinding and throwing exception
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// requests to frame manager from C++ interpreter
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call_method, // request for new frame from interpreter, manager responds with method_entry
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return_from_method, // request from interpreter to unwind, manager responds with method_continue
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more_monitors, // need a new monitor
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throwing_exception, // unwind stack and rethrow
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popping_frame, // unwind call and retry call
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do_osr // request this invocation be OSR's
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};
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private:
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JavaThread* _thread; // the vm's java thread pointer
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address _bcp; // instruction pointer
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intptr_t* _locals; // local variable pointer
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constantPoolCacheOop _constants; // constant pool cache
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methodOop _method; // method being executed
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DataLayout* _mdx; // compiler profiling data for current bytecode
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intptr_t* _stack; // expression stack
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messages _msg; // frame manager <-> interpreter message
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frame_manager_message _result; // result to frame manager
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interpreterState _prev_link; // previous interpreter state
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oop _oop_temp; // mirror for interpreted native, null otherwise
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intptr_t* _stack_base; // base of expression stack
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intptr_t* _stack_limit; // limit of expression stack
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BasicObjectLock* _monitor_base; // base of monitors on the native stack
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public:
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// Constructor is only used by the initialization step. All other instances are created
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// by the frame manager.
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BytecodeInterpreter(messages msg);
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//
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// Deoptimization support
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//
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static void layout_interpreterState(interpreterState to_fill,
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frame* caller,
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frame* interpreter_frame,
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methodOop method,
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intptr_t* locals,
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intptr_t* stack,
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intptr_t* stack_base,
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intptr_t* monitor_base,
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intptr_t* frame_bottom,
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bool top_frame);
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/*
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* Generic 32-bit wide "Java slot" definition. This type occurs
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* in operand stacks, Java locals, object fields, constant pools.
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*/
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union VMJavaVal32 {
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jint i;
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jfloat f;
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class oopDesc* r;
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uint32_t raw;
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};
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/*
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* Generic 64-bit Java value definition
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*/
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union VMJavaVal64 {
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jlong l;
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jdouble d;
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uint32_t v[2];
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};
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/*
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* Generic 32-bit wide "Java slot" definition. This type occurs
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* in Java locals, object fields, constant pools, and
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* operand stacks (as a CVMStackVal32).
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*/
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typedef union VMSlotVal32 {
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VMJavaVal32 j; /* For "Java" values */
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address a; /* a return created by jsr or jsr_w */
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} VMSlotVal32;
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/*
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* Generic 32-bit wide stack slot definition.
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*/
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union VMStackVal32 {
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VMJavaVal32 j; /* For "Java" values */
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VMSlotVal32 s; /* any value from a "slot" or locals[] */
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};
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inline JavaThread* thread() { return _thread; }
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inline address bcp() { return _bcp; }
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inline void set_bcp(address new_bcp) { _bcp = new_bcp; }
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inline intptr_t* locals() { return _locals; }
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inline constantPoolCacheOop constants() { return _constants; }
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inline methodOop method() { return _method; }
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inline DataLayout* mdx() { return _mdx; }
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inline void set_mdx(DataLayout *new_mdx) { _mdx = new_mdx; }
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inline messages msg() { return _msg; }
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inline void set_msg(messages new_msg) { _msg = new_msg; }
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inline methodOop callee() { return _result._to_call._callee; }
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inline void set_callee(methodOop new_callee) { _result._to_call._callee = new_callee; }
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inline void set_callee_entry_point(address entry) { _result._to_call._callee_entry_point = entry; }
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inline void set_osr_buf(address buf) { _result._osr._osr_buf = buf; }
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inline void set_osr_entry(address entry) { _result._osr._osr_entry = entry; }
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inline int bcp_advance() { return _result._to_call._bcp_advance; }
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inline void set_bcp_advance(int count) { _result._to_call._bcp_advance = count; }
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inline void set_return_kind(Bytecodes::Code kind) { _result._return_kind = kind; }
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inline interpreterState prev() { return _prev_link; }
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inline intptr_t* stack() { return _stack; }
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inline void set_stack(intptr_t* new_stack) { _stack = new_stack; }
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inline intptr_t* stack_base() { return _stack_base; }
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inline intptr_t* stack_limit() { return _stack_limit; }
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inline BasicObjectLock* monitor_base() { return _monitor_base; }
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/*
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* 64-bit Arithmetic:
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*
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* The functions below follow the semantics of the
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* ladd, land, ldiv, lmul, lor, lxor, and lrem bytecodes,
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* respectively.
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*/
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static jlong VMlongAdd(jlong op1, jlong op2);
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static jlong VMlongAnd(jlong op1, jlong op2);
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static jlong VMlongDiv(jlong op1, jlong op2);
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static jlong VMlongMul(jlong op1, jlong op2);
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static jlong VMlongOr (jlong op1, jlong op2);
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static jlong VMlongSub(jlong op1, jlong op2);
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static jlong VMlongXor(jlong op1, jlong op2);
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static jlong VMlongRem(jlong op1, jlong op2);
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/*
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* Shift:
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*
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* The functions below follow the semantics of the
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* lushr, lshl, and lshr bytecodes, respectively.
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*/
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static jlong VMlongUshr(jlong op1, jint op2);
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static jlong VMlongShl (jlong op1, jint op2);
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static jlong VMlongShr (jlong op1, jint op2);
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/*
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* Unary:
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*
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* Return the negation of "op" (-op), according to
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* the semantics of the lneg bytecode.
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*/
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static jlong VMlongNeg(jlong op);
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/*
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* Return the complement of "op" (~op)
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*/
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static jlong VMlongNot(jlong op);
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/*
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* Comparisons to 0:
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*/
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static int32_t VMlongLtz(jlong op); /* op <= 0 */
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static int32_t VMlongGez(jlong op); /* op >= 0 */
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static int32_t VMlongEqz(jlong op); /* op == 0 */
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/*
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* Between operands:
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*/
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static int32_t VMlongEq(jlong op1, jlong op2); /* op1 == op2 */
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static int32_t VMlongNe(jlong op1, jlong op2); /* op1 != op2 */
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static int32_t VMlongGe(jlong op1, jlong op2); /* op1 >= op2 */
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static int32_t VMlongLe(jlong op1, jlong op2); /* op1 <= op2 */
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static int32_t VMlongLt(jlong op1, jlong op2); /* op1 < op2 */
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static int32_t VMlongGt(jlong op1, jlong op2); /* op1 > op2 */
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/*
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* Comparisons (returning an jint value: 0, 1, or -1)
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*
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* Between operands:
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*
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* Compare "op1" and "op2" according to the semantics of the
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* "lcmp" bytecode.
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*/
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static int32_t VMlongCompare(jlong op1, jlong op2);
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/*
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* Convert int to long, according to "i2l" bytecode semantics
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*/
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static jlong VMint2Long(jint val);
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/*
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* Convert long to int, according to "l2i" bytecode semantics
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*/
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static jint VMlong2Int(jlong val);
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/*
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* Convert long to float, according to "l2f" bytecode semantics
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*/
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static jfloat VMlong2Float(jlong val);
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/*
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* Convert long to double, according to "l2d" bytecode semantics
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*/
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static jdouble VMlong2Double(jlong val);
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/*
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* Java floating-point float value manipulation.
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*
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* The result argument is, once again, an lvalue.
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*
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* Arithmetic:
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*
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* The functions below follow the semantics of the
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* fadd, fsub, fmul, fdiv, and frem bytecodes,
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* respectively.
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*/
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static jfloat VMfloatAdd(jfloat op1, jfloat op2);
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static jfloat VMfloatSub(jfloat op1, jfloat op2);
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static jfloat VMfloatMul(jfloat op1, jfloat op2);
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static jfloat VMfloatDiv(jfloat op1, jfloat op2);
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static jfloat VMfloatRem(jfloat op1, jfloat op2);
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/*
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* Unary:
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*
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* Return the negation of "op" (-op), according to
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* the semantics of the fneg bytecode.
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*/
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static jfloat VMfloatNeg(jfloat op);
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/*
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* Comparisons (returning an int value: 0, 1, or -1)
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*
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* Between operands:
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*
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* Compare "op1" and "op2" according to the semantics of the
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* "fcmpl" (direction is -1) or "fcmpg" (direction is 1) bytecodes.
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*/
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static int32_t VMfloatCompare(jfloat op1, jfloat op2,
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int32_t direction);
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/*
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* Conversion:
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*/
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/*
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* Convert float to double, according to "f2d" bytecode semantics
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*/
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static jdouble VMfloat2Double(jfloat op);
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/*
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******************************************
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* Java double floating-point manipulation.
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******************************************
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*
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* The result argument is, once again, an lvalue.
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*
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* Conversions:
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*/
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/*
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* Convert double to int, according to "d2i" bytecode semantics
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*/
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static jint VMdouble2Int(jdouble val);
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/*
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* Convert double to float, according to "d2f" bytecode semantics
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*/
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static jfloat VMdouble2Float(jdouble val);
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/*
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* Convert int to double, according to "i2d" bytecode semantics
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*/
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static jdouble VMint2Double(jint val);
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/*
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* Arithmetic:
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*
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* The functions below follow the semantics of the
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* dadd, dsub, ddiv, dmul, and drem bytecodes, respectively.
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*/
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static jdouble VMdoubleAdd(jdouble op1, jdouble op2);
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static jdouble VMdoubleSub(jdouble op1, jdouble op2);
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static jdouble VMdoubleDiv(jdouble op1, jdouble op2);
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static jdouble VMdoubleMul(jdouble op1, jdouble op2);
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static jdouble VMdoubleRem(jdouble op1, jdouble op2);
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/*
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* Unary:
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*
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* Return the negation of "op" (-op), according to
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* the semantics of the dneg bytecode.
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*/
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static jdouble VMdoubleNeg(jdouble op);
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/*
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* Comparisons (returning an int32_t value: 0, 1, or -1)
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*
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* Between operands:
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*
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* Compare "op1" and "op2" according to the semantics of the
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* "dcmpl" (direction is -1) or "dcmpg" (direction is 1) bytecodes.
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*/
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static int32_t VMdoubleCompare(jdouble op1, jdouble op2, int32_t direction);
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/*
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* Copy two typeless 32-bit words from one location to another.
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* This is semantically equivalent to:
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*
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* to[0] = from[0];
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* to[1] = from[1];
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*
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* but this interface is provided for those platforms that could
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* optimize this into a single 64-bit transfer.
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*/
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416 |
static void VMmemCopy64(uint32_t to[2], const uint32_t from[2]);
|
|
417 |
|
|
418 |
|
|
419 |
// Arithmetic operations
|
|
420 |
|
|
421 |
/*
|
|
422 |
* Java arithmetic methods.
|
|
423 |
* The functions below follow the semantics of the
|
|
424 |
* iadd, isub, imul, idiv, irem, iand, ior, ixor,
|
|
425 |
* and ineg bytecodes, respectively.
|
|
426 |
*/
|
|
427 |
|
|
428 |
static jint VMintAdd(jint op1, jint op2);
|
|
429 |
static jint VMintSub(jint op1, jint op2);
|
|
430 |
static jint VMintMul(jint op1, jint op2);
|
|
431 |
static jint VMintDiv(jint op1, jint op2);
|
|
432 |
static jint VMintRem(jint op1, jint op2);
|
|
433 |
static jint VMintAnd(jint op1, jint op2);
|
|
434 |
static jint VMintOr (jint op1, jint op2);
|
|
435 |
static jint VMintXor(jint op1, jint op2);
|
|
436 |
|
|
437 |
/*
|
|
438 |
* Shift Operation:
|
|
439 |
* The functions below follow the semantics of the
|
|
440 |
* iushr, ishl, and ishr bytecodes, respectively.
|
|
441 |
*/
|
|
442 |
|
|
443 |
static jint VMintUshr(jint op, jint num);
|
|
444 |
static jint VMintShl (jint op, jint num);
|
|
445 |
static jint VMintShr (jint op, jint num);
|
|
446 |
|
|
447 |
/*
|
|
448 |
* Unary Operation:
|
|
449 |
*
|
|
450 |
* Return the negation of "op" (-op), according to
|
|
451 |
* the semantics of the ineg bytecode.
|
|
452 |
*/
|
|
453 |
|
|
454 |
static jint VMintNeg(jint op);
|
|
455 |
|
|
456 |
/*
|
|
457 |
* Int Conversions:
|
|
458 |
*/
|
|
459 |
|
|
460 |
/*
|
|
461 |
* Convert int to float, according to "i2f" bytecode semantics
|
|
462 |
*/
|
|
463 |
|
|
464 |
static jfloat VMint2Float(jint val);
|
|
465 |
|
|
466 |
/*
|
|
467 |
* Convert int to byte, according to "i2b" bytecode semantics
|
|
468 |
*/
|
|
469 |
|
|
470 |
static jbyte VMint2Byte(jint val);
|
|
471 |
|
|
472 |
/*
|
|
473 |
* Convert int to char, according to "i2c" bytecode semantics
|
|
474 |
*/
|
|
475 |
|
|
476 |
static jchar VMint2Char(jint val);
|
|
477 |
|
|
478 |
/*
|
|
479 |
* Convert int to short, according to "i2s" bytecode semantics
|
|
480 |
*/
|
|
481 |
|
|
482 |
static jshort VMint2Short(jint val);
|
|
483 |
|
|
484 |
/*=========================================================================
|
|
485 |
* Bytecode interpreter operations
|
|
486 |
*=======================================================================*/
|
|
487 |
|
|
488 |
static void dup(intptr_t *tos);
|
|
489 |
static void dup2(intptr_t *tos);
|
|
490 |
static void dup_x1(intptr_t *tos); /* insert top word two down */
|
|
491 |
static void dup_x2(intptr_t *tos); /* insert top word three down */
|
|
492 |
static void dup2_x1(intptr_t *tos); /* insert top 2 slots three down */
|
|
493 |
static void dup2_x2(intptr_t *tos); /* insert top 2 slots four down */
|
|
494 |
static void swap(intptr_t *tos); /* swap top two elements */
|
|
495 |
|
|
496 |
// umm don't like this method modifies its object
|
|
497 |
|
|
498 |
// The Interpreter used when
|
|
499 |
static void run(interpreterState istate);
|
|
500 |
// The interpreter used if JVMTI needs interpreter events
|
|
501 |
static void runWithChecks(interpreterState istate);
|
|
502 |
static void End_Of_Interpreter(void);
|
|
503 |
|
|
504 |
// Inline static functions for Java Stack and Local manipulation
|
|
505 |
|
|
506 |
static address stack_slot(intptr_t *tos, int offset);
|
|
507 |
static jint stack_int(intptr_t *tos, int offset);
|
|
508 |
static jfloat stack_float(intptr_t *tos, int offset);
|
|
509 |
static oop stack_object(intptr_t *tos, int offset);
|
|
510 |
static jdouble stack_double(intptr_t *tos, int offset);
|
|
511 |
static jlong stack_long(intptr_t *tos, int offset);
|
|
512 |
|
|
513 |
// only used for value types
|
|
514 |
static void set_stack_slot(intptr_t *tos, address value, int offset);
|
|
515 |
static void set_stack_int(intptr_t *tos, int value, int offset);
|
|
516 |
static void set_stack_float(intptr_t *tos, jfloat value, int offset);
|
|
517 |
static void set_stack_object(intptr_t *tos, oop value, int offset);
|
|
518 |
|
|
519 |
// needs to be platform dep for the 32 bit platforms.
|
|
520 |
static void set_stack_double(intptr_t *tos, jdouble value, int offset);
|
|
521 |
static void set_stack_long(intptr_t *tos, jlong value, int offset);
|
|
522 |
|
|
523 |
static void set_stack_double_from_addr(intptr_t *tos, address addr, int offset);
|
|
524 |
static void set_stack_long_from_addr(intptr_t *tos, address addr, int offset);
|
|
525 |
|
|
526 |
// Locals
|
|
527 |
|
|
528 |
static address locals_slot(intptr_t* locals, int offset);
|
|
529 |
static jint locals_int(intptr_t* locals, int offset);
|
|
530 |
static jfloat locals_float(intptr_t* locals, int offset);
|
|
531 |
static oop locals_object(intptr_t* locals, int offset);
|
|
532 |
static jdouble locals_double(intptr_t* locals, int offset);
|
|
533 |
static jlong locals_long(intptr_t* locals, int offset);
|
|
534 |
|
|
535 |
static address locals_long_at(intptr_t* locals, int offset);
|
|
536 |
static address locals_double_at(intptr_t* locals, int offset);
|
|
537 |
|
|
538 |
static void set_locals_slot(intptr_t *locals, address value, int offset);
|
|
539 |
static void set_locals_int(intptr_t *locals, jint value, int offset);
|
|
540 |
static void set_locals_float(intptr_t *locals, jfloat value, int offset);
|
|
541 |
static void set_locals_object(intptr_t *locals, oop value, int offset);
|
|
542 |
static void set_locals_double(intptr_t *locals, jdouble value, int offset);
|
|
543 |
static void set_locals_long(intptr_t *locals, jlong value, int offset);
|
|
544 |
static void set_locals_double_from_addr(intptr_t *locals,
|
|
545 |
address addr, int offset);
|
|
546 |
static void set_locals_long_from_addr(intptr_t *locals,
|
|
547 |
address addr, int offset);
|
|
548 |
|
|
549 |
static void astore(intptr_t* topOfStack, int stack_offset,
|
|
550 |
intptr_t* locals, int locals_offset);
|
|
551 |
|
|
552 |
// Support for dup and swap
|
|
553 |
static void copy_stack_slot(intptr_t *tos, int from_offset, int to_offset);
|
|
554 |
|
|
555 |
#ifndef PRODUCT
|
|
556 |
static const char* C_msg(BytecodeInterpreter::messages msg);
|
|
557 |
void print();
|
|
558 |
#endif // PRODUCT
|
|
559 |
|
|
560 |
// Platform fields/methods
|
|
561 |
# include "incls/_bytecodeInterpreter_pd.hpp.incl"
|
|
562 |
|
|
563 |
}; // BytecodeInterpreter
|
|
564 |
|
|
565 |
#endif // CC_INTERP
|