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 /*

  * Copyright (c) 1997, 2015, 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.

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  */

 /*

  * This file has been modified by Loongson Technology in 2015. These

  * modifications are Copyright (c) 2015 Loongson Technology, and are made

  * available on the same license terms set forth above.

  */

 #ifndef SHARE_VM_INTERPRETER_TEMPLATETABLE_HPP

 #define SHARE_VM_INTERPRETER_TEMPLATETABLE_HPP

 #include "interpreter/bytecodes.hpp"

 #include "memory/allocation.hpp"

 #include "runtime/frame.hpp"

 #if defined INTERP_MASM_MD_HPP

 # include INTERP_MASM_MD_HPP

 #elif defined TARGET_ARCH_x86

 # include "interp_masm_x86.hpp"

 #elif defined TARGET_ARCH_MODEL_sparc

 # include "interp_masm_sparc.hpp"

 #elif defined TARGET_ARCH_MODEL_zero

 # include "interp_masm_zero.hpp"

 #elif defined TARGET_ARCH_MODEL_ppc_64

 # include "interp_masm_ppc_64.hpp"

 #elif defined TARGET_ARCH_MODEL_mips_64

 # include "interp_masm_mips_64.hpp"

 #endif

 #ifndef CC_INTERP

 // All the necessary definitions used for (bytecode) template generation. Instead of

 // spreading the implementation functionality for each bytecode in the interpreter

 // and the snippet generator, a template is assigned to each bytecode which can be

 // used to generate the bytecode's implementation if needed.

 // A Template describes the properties of a code template for a given bytecode

 // and provides a generator to generate the code template.

 class Template VALUE_OBJ_CLASS_SPEC {

  private:

   enum Flags {

     uses_bcp_bit,                                // set if template needs the bcp pointing to bytecode

     does_dispatch_bit,                           // set if template dispatches on its own

     calls_vm_bit,                                // set if template calls the vm

     wide_bit                                     // set if template belongs to a wide instruction

   };

   typedef void (*generator)(int arg);

   int       _flags;                              // describes interpreter template properties (bcp unknown)

   TosState  _tos_in;                             // tos cache state before template execution

   TosState  _tos_out;                            // tos cache state after  template execution

   generator _gen;                                // template code generator

   int       _arg;                                // argument for template code generator

   void      initialize(int flags, TosState tos_in, TosState tos_out, generator gen, int arg);

   friend class TemplateTable;

  public:

   Bytecodes::Code bytecode() const;

   bool      is_valid() const                     { return _gen != NULL; }

   bool      uses_bcp() const                     { return (_flags & (1 << uses_bcp_bit     )) != 0; }

   bool      does_dispatch() const                { return (_flags & (1 << does_dispatch_bit)) != 0; }

   bool      calls_vm() const                     { return (_flags & (1 << calls_vm_bit     )) != 0; }

   bool      is_wide() const                      { return (_flags & (1 << wide_bit         )) != 0; }

   TosState  tos_in() const                       { return _tos_in; }

   TosState  tos_out() const                      { return _tos_out; }

   void      generate(InterpreterMacroAssembler* masm);

 };

 // The TemplateTable defines all Templates and provides accessor functions

 // to get the template for a given bytecode.

 class TemplateTable: AllStatic {

  public:

   enum Operation { add, sub, mul, div, rem, _and, _or, _xor, shl, shr, ushr };

   enum Condition { equal, not_equal, less, less_equal, greater, greater_equal };

   enum CacheByte { f1_byte = 1, f2_byte = 2 };  // byte_no codes

  private:

   static bool            _is_initialized;        // true if TemplateTable has been initialized

   static Template        _template_table     [Bytecodes::number_of_codes];

   static Template        _template_table_wide[Bytecodes::number_of_codes];

   static Template*       _desc;                  // the current template to be generated

   static Bytecodes::Code bytecode()              { return _desc->bytecode(); }

   static BarrierSet*     _bs;                    // Cache the barrier set.

  public:

   //%note templates_1

   static InterpreterMacroAssembler* _masm;       // the assembler used when generating templates

  private:

   // special registers

   static inline Address at_bcp(int offset);

   // helpers

   static void unimplemented_bc();

   static void patch_bytecode(Bytecodes::Code bc, Register bc_reg,

                              Register temp_reg, bool load_bc_into_bc_reg = true, int byte_no = -1);

   // C calls

   static void call_VM(Register oop_result, address entry_point);

   static void call_VM(Register oop_result, address entry_point, Register arg_1);

   static void call_VM(Register oop_result, address entry_point, Register arg_1, Register arg_2);

   static void call_VM(Register oop_result, address entry_point, Register arg_1, Register arg_2, Register arg_3);

   // these overloadings are not presently used on SPARC:

   static void call_VM(Register oop_result, Register last_java_sp, address entry_point);

   static void call_VM(Register oop_result, Register last_java_sp, address entry_point, Register arg_1);

   static void call_VM(Register oop_result, Register last_java_sp, address entry_point, Register arg_1, Register arg_2);

   static void call_VM(Register oop_result, Register last_java_sp, address entry_point, Register arg_1, Register arg_2, Register arg_3);

   // bytecodes

   static void nop();

   static void aconst_null();

   static void iconst(int value);

   static void lconst(int value);

   static void fconst(int value);

   static void dconst(int value);

   static void bipush();

   static void sipush();

   static void ldc(bool wide);

   static void ldc2_w();

   static void fast_aldc(bool wide);

   static void locals_index(Register reg, int offset = 1);

   static void iload();

   static void fast_iload();

   static void fast_iload2();

   static void fast_icaload();

   static void lload();

   static void fload();

   static void dload();

   static void aload();

   static void locals_index_wide(Register reg);

   static void wide_iload();

   static void wide_lload();

   static void wide_fload();

   static void wide_dload();

   static void wide_aload();

   static void iaload();

   static void laload();

   static void faload();

   static void daload();

   static void aaload();

   static void baload();

   static void caload();

   static void saload();

   static void iload(int n);

   static void lload(int n);

   static void fload(int n);

   static void dload(int n);

   static void aload(int n);

   static void aload_0();

   static void istore();

   static void lstore();

   static void fstore();

   static void dstore();

   static void astore();

   static void wide_istore();

   static void wide_lstore();

   static void wide_fstore();

   static void wide_dstore();

   static void wide_astore();

   static void iastore();

   static void lastore();

   static void fastore();

   static void dastore();

   static void aastore();

   static void bastore();

   static void castore();

   static void sastore();

   static void istore(int n);

   static void lstore(int n);

   static void fstore(int n);

   static void dstore(int n);

   static void astore(int n);

   static void pop();

   static void pop2();

   static void dup();

   static void dup_x1();

   static void dup_x2();

   static void dup2();

   static void dup2_x1();

   static void dup2_x2();

   static void swap();

   static void iop2(Operation op);

   static void lop2(Operation op);

   static void fop2(Operation op);

   static void dop2(Operation op);

   static void idiv();

   static void irem();

   static void lmul();

   static void ldiv();

   static void lrem();

   static void lshl();

   static void lshr();

   static void lushr();

   static void ineg();

   static void lneg();

   static void fneg();

   static void dneg();

   static void iinc();

   static void wide_iinc();

   static void convert();

   static void lcmp();

   static void float_cmp (bool is_float, int unordered_result);

   static void float_cmp (int unordered_result);

   static void double_cmp(int unordered_result);

   static void count_calls(Register method, Register temp);

   static void branch(bool is_jsr, bool is_wide);

   static void if_0cmp   (Condition cc);

   static void if_icmp   (Condition cc);

   static void if_nullcmp(Condition cc);

   static void if_acmp   (Condition cc);

   static void _goto();

   static void jsr();

   static void ret();

   static void wide_ret();

   static void goto_w();

   static void jsr_w();

   static void tableswitch();

   static void lookupswitch();

   static void fast_linearswitch();

   static void fast_binaryswitch();

   static void _return(TosState state);

   static void resolve_cache_and_index(int byte_no,       // one of 1,2,11

                                       Register cache,    // output for CP cache

                                       Register index,    // output for CP index

                                       size_t index_size); // one of 1,2,4

   static void load_invoke_cp_cache_entry(int byte_no,

                                          Register method,

                                          Register itable_index,

                                          Register flags,

                                          bool is_invokevirtual,

                                          bool is_virtual_final,

                                          bool is_invokedynamic);

   static void load_field_cp_cache_entry(Register obj,

                                         Register cache,

                                         Register index,

                                         Register offset,

                                         Register flags,

                                         bool is_static);

   static void invokevirtual(int byte_no);

   static void invokespecial(int byte_no);

   static void invokestatic(int byte_no);

   static void invokeinterface(int byte_no);

   static void invokedynamic(int byte_no);

   static void invokehandle(int byte_no);

   static void fast_invokevfinal(int byte_no);

   static void getfield_or_static(int byte_no, bool is_static);

   static void putfield_or_static(int byte_no, bool is_static);

   static void getfield(int byte_no);

   static void putfield(int byte_no);

   static void getstatic(int byte_no);

   static void putstatic(int byte_no);

   static void pop_and_check_object(Register obj);

   static void _new();

   static void newarray();

   static void anewarray();

   static void arraylength();

   static void checkcast();

   static void instanceof();

   static void athrow();

   static void monitorenter();

   static void monitorexit();

   static void wide();

   static void multianewarray();

   static void fast_xaccess(TosState state);

   static void fast_accessfield(TosState state);

   static void fast_storefield(TosState state);

   static void _breakpoint();

   static void shouldnotreachhere();

   // jvmti support

   static void jvmti_post_field_access(Register cache, Register index, bool is_static, bool has_tos);

   static void jvmti_post_field_mod(Register cache, Register index, bool is_static);

   static void jvmti_post_fast_field_mod();

   // debugging of TemplateGenerator

   static void transition(TosState tos_in, TosState tos_out);// checks if in/out states expected by template generator correspond to table entries

   // initialization helpers

   static void def(Bytecodes::Code code, int flags, TosState in, TosState out, void (*gen)(            ), char filler );

   static void def(Bytecodes::Code code, int flags, TosState in, TosState out, void (*gen)(int arg     ), int arg     );

  static void def(Bytecodes::Code code, int flags, TosState in, TosState out, void (*gen)(bool arg    ), bool arg    );

   static void def(Bytecodes::Code code, int flags, TosState in, TosState out, void (*gen)(TosState tos), TosState tos);

   static void def(Bytecodes::Code code, int flags, TosState in, TosState out, void (*gen)(Operation op), Operation op);

   static void def(Bytecodes::Code code, int flags, TosState in, TosState out, void (*gen)(Condition cc), Condition cc);

   friend class Template;

   // InterpreterMacroAssembler::is_a(), etc., need TemplateTable::call_VM().

   friend class InterpreterMacroAssembler;

  public:

   // Initialization

   static void initialize();

   static void pd_initialize();

   // Templates

   static Template* template_for     (Bytecodes::Code code)  { Bytecodes::check     (code); return &_template_table     [code]; }

   static Template* template_for_wide(Bytecodes::Code code)  { Bytecodes::wide_check(code); return &_template_table_wide[code]; }

   // Platform specifics

 #if defined TEMPLATETABLE_MD_HPP

 # include TEMPLATETABLE_MD_HPP

 #elif defined TARGET_ARCH_MODEL_x86_32

 # include "templateTable_x86_32.hpp"

 #elif defined TARGET_ARCH_MODEL_x86_64

 # include "templateTable_x86_64.hpp"

 #elif defined TARGET_ARCH_MODEL_sparc

 # include "templateTable_sparc.hpp"

 #elif defined TARGET_ARCH_MODEL_zero

 # include "templateTable_zero.hpp"

 #elif defined TARGET_ARCH_MODEL_ppc_64

 # include "templateTable_ppc_64.hpp"

 #elif defined TARGET_ARCH_MODEL_mips_64

 # include "templateTable_mips_64.hpp"

 #endif

 };

 #endif /* !CC_INTERP */

 #endif // SHARE_VM_INTERPRETER_TEMPLATETABLE_HPP