jdk8-mips64-public/hotspot: src/share/vm/interpreter/bytecode.hpp@f34d701e952e

8003935: Simplify the needed includes for using Thread::current()
Reviewed-by: dholmes, rbackman, coleenp

     1 /*

     2  * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  *

    23  */

    25 #ifndef SHARE_VM_INTERPRETER_BYTECODE_HPP

    26 #define SHARE_VM_INTERPRETER_BYTECODE_HPP

    28 #include "interpreter/bytecodes.hpp"

    29 #include "memory/allocation.hpp"

    30 #include "oops/method.hpp"

    31 #ifdef TARGET_ARCH_x86

    32 # include "bytes_x86.hpp"

    33 #endif

    34 #ifdef TARGET_ARCH_sparc

    35 # include "bytes_sparc.hpp"

    36 #endif

    37 #ifdef TARGET_ARCH_zero

    38 # include "bytes_zero.hpp"

    39 #endif

    40 #ifdef TARGET_ARCH_arm

    41 # include "bytes_arm.hpp"

    42 #endif

    43 #ifdef TARGET_ARCH_ppc

    44 # include "bytes_ppc.hpp"

    45 #endif

    47 class ciBytecodeStream;

    49 // The base class for different kinds of bytecode abstractions.

    50 // Provides the primitive operations to manipulate code relative

    51 // to the bcp.

    53 class Bytecode: public StackObj {

    54  protected:

    55   const address   _bcp;

    56   const Bytecodes::Code _code;

    58   // Address computation

    59   address addr_at            (int offset)        const     { return (address)_bcp + offset; }

    60   u_char byte_at(int offset) const               { return *addr_at(offset); }

    61   address aligned_addr_at    (int offset)        const     { return (address)round_to((intptr_t)addr_at(offset), jintSize); }

    62   int     aligned_offset     (int offset)        const     { return aligned_addr_at(offset) - addr_at(0); }

    64   // Word access:

    65   int     get_Java_u2_at     (int offset)        const     { return Bytes::get_Java_u2(addr_at(offset)); }

    66   int     get_Java_u4_at     (int offset)        const     { return Bytes::get_Java_u4(addr_at(offset)); }

    67   int     get_native_u2_at   (int offset)        const     { return Bytes::get_native_u2(addr_at(offset)); }

    68   int     get_native_u4_at   (int offset)        const     { return Bytes::get_native_u4(addr_at(offset)); }

    70  public:

    71   Bytecode(Method* method, address bcp): _bcp(bcp), _code(Bytecodes::code_at(method, addr_at(0))) {

    72     assert(method != NULL, "this form requires a valid Method*");

    73   }

    74   // Defined in ciStreams.hpp

    75   inline Bytecode(const ciBytecodeStream* stream, address bcp = NULL);

    77   // Attributes

    78   address bcp() const                            { return _bcp; }

    79   int instruction_size() const                   { return Bytecodes::length_for_code_at(_code, bcp()); }

    81   Bytecodes::Code code() const                   { return _code; }

    82   Bytecodes::Code java_code() const              { return Bytecodes::java_code(code()); }

    83   Bytecodes::Code invoke_code() const            { return (code() == Bytecodes::_invokehandle) ? code() : java_code(); }

    85   // Static functions for parsing bytecodes in place.

    86   int get_index_u1(Bytecodes::Code bc) const {

    87     assert_same_format_as(bc); assert_index_size(1, bc);

    88     return *(jubyte*)addr_at(1);

    89   }

    90   int get_index_u2(Bytecodes::Code bc, bool is_wide = false) const {

    91     assert_same_format_as(bc, is_wide); assert_index_size(2, bc, is_wide);

    92     address p = addr_at(is_wide ? 2 : 1);

    93     if (can_use_native_byte_order(bc, is_wide))

    94       return Bytes::get_native_u2(p);

    95     else  return Bytes::get_Java_u2(p);

    96   }

    97   int get_index_u1_cpcache(Bytecodes::Code bc) const {

    98     assert_same_format_as(bc); assert_index_size(1, bc);

    99     return *(jubyte*)addr_at(1) + ConstantPool::CPCACHE_INDEX_TAG;

   100   }

   101   int get_index_u2_cpcache(Bytecodes::Code bc) const {

   102     assert_same_format_as(bc); assert_index_size(2, bc); assert_native_index(bc);

   103     return Bytes::get_native_u2(addr_at(1)) + ConstantPool::CPCACHE_INDEX_TAG;

   104   }

   105   int get_index_u4(Bytecodes::Code bc) const {

   106     assert_same_format_as(bc); assert_index_size(4, bc);

   107     assert(can_use_native_byte_order(bc), "");

   108     return Bytes::get_native_u4(addr_at(1));

   109   }

   110   bool has_index_u4(Bytecodes::Code bc) const {

   111     return bc == Bytecodes::_invokedynamic;

   112   }

   114   int get_offset_s2(Bytecodes::Code bc) const {

   115     assert_same_format_as(bc); assert_offset_size(2, bc);

   116     return (jshort) Bytes::get_Java_u2(addr_at(1));

   117   }

   118   int get_offset_s4(Bytecodes::Code bc) const {

   119     assert_same_format_as(bc); assert_offset_size(4, bc);

   120     return (jint) Bytes::get_Java_u4(addr_at(1));

   121   }

   123   int get_constant_u1(int offset, Bytecodes::Code bc) const {

   124     assert_same_format_as(bc); assert_constant_size(1, offset, bc);

   125     return *(jbyte*)addr_at(offset);

   126   }

   127   int get_constant_u2(int offset, Bytecodes::Code bc, bool is_wide = false) const {

   128     assert_same_format_as(bc, is_wide); assert_constant_size(2, offset, bc, is_wide);

   129     return (jshort) Bytes::get_Java_u2(addr_at(offset));

   130   }

   132   // These are used locally and also from bytecode streams.

   133   void assert_same_format_as(Bytecodes::Code testbc, bool is_wide = false) const NOT_DEBUG_RETURN;

   134   static void assert_index_size(int required_size, Bytecodes::Code bc, bool is_wide = false) NOT_DEBUG_RETURN;

   135   static void assert_offset_size(int required_size, Bytecodes::Code bc, bool is_wide = false) NOT_DEBUG_RETURN;

   136   static void assert_constant_size(int required_size, int where, Bytecodes::Code bc, bool is_wide = false) NOT_DEBUG_RETURN;

   137   static void assert_native_index(Bytecodes::Code bc, bool is_wide = false) NOT_DEBUG_RETURN;

   138   static bool can_use_native_byte_order(Bytecodes::Code bc, bool is_wide = false) {

   139     return (!Bytes::is_Java_byte_ordering_different() || Bytecodes::native_byte_order(bc /*, is_wide*/));

   140   }

   141 };

   144 // Abstractions for lookupswitch bytecode

   145 class LookupswitchPair VALUE_OBJ_CLASS_SPEC {

   146  private:

   147   const address _bcp;

   149   address addr_at            (int offset)        const     { return _bcp + offset; }

   150   int     get_Java_u4_at     (int offset)        const     { return Bytes::get_Java_u4(addr_at(offset)); }

   152  public:

   153   LookupswitchPair(address bcp): _bcp(bcp) {}

   154   int  match() const                             { return get_Java_u4_at(0 * jintSize); }

   155   int  offset() const                            { return get_Java_u4_at(1 * jintSize); }

   156 };

   159 class Bytecode_lookupswitch: public Bytecode {

   160  public:

   161   Bytecode_lookupswitch(Method* method, address bcp): Bytecode(method, bcp) { verify(); }

   162   // Defined in ciStreams.hpp

   163   inline Bytecode_lookupswitch(const ciBytecodeStream* stream);

   164   void verify() const PRODUCT_RETURN;

   166   // Attributes

   167   int  default_offset() const                    { return get_Java_u4_at(aligned_offset(1 + 0*jintSize)); }

   168   int  number_of_pairs() const                   { return get_Java_u4_at(aligned_offset(1 + 1*jintSize)); }

   169   LookupswitchPair pair_at(int i) const          {

   170     assert(0 <= i && i < number_of_pairs(), "pair index out of bounds");

   171     return LookupswitchPair(aligned_addr_at(1 + (1 + i)*2*jintSize));

   172   }

   173 };

   175 class Bytecode_tableswitch: public Bytecode {

   176  public:

   177   Bytecode_tableswitch(Method* method, address bcp): Bytecode(method, bcp) { verify(); }

   178   // Defined in ciStreams.hpp

   179   inline Bytecode_tableswitch(const ciBytecodeStream* stream);

   180   void verify() const PRODUCT_RETURN;

   182   // Attributes

   183   int  default_offset() const                    { return get_Java_u4_at(aligned_offset(1 + 0*jintSize)); }

   184   int  low_key() const                           { return get_Java_u4_at(aligned_offset(1 + 1*jintSize)); }

   185   int  high_key() const                          { return get_Java_u4_at(aligned_offset(1 + 2*jintSize)); }

   186   int  dest_offset_at(int i) const;

   187   int  length()                                  { return high_key()-low_key()+1; }

   188 };

   190 // Common code for decoding invokes and field references.

   192 class Bytecode_member_ref: public Bytecode {

   193  protected:

   194   const methodHandle _method;                          // method containing the bytecode

   196   Bytecode_member_ref(methodHandle method, int bci)  : Bytecode(method(), method()->bcp_from(bci)), _method(method) {}

   198   methodHandle method() const                    { return _method; }

   199   ConstantPool* constants() const              { return _method->constants(); }

   200   ConstantPoolCache* cpcache() const           { return _method->constants()->cache(); }

   201   ConstantPoolCacheEntry* cpcache_entry() const;

   203  public:

   204   int          index() const;                    // cache index (loaded from instruction)

   205   int          pool_index() const;               // constant pool index

   206   Symbol*      klass() const;                    // returns the klass of the method or field

   207   Symbol*      name() const;                     // returns the name of the method or field

   208   Symbol*      signature() const;                // returns the signature of the method or field

   210   BasicType    result_type() const;              // returns the result type of the getfield or invoke

   211 };

   213 // Abstraction for invoke_{virtual, static, interface, special}

   215 class Bytecode_invoke: public Bytecode_member_ref {

   216  protected:

   217   // Constructor that skips verification

   218   Bytecode_invoke(methodHandle method, int bci, bool unused)  : Bytecode_member_ref(method, bci) {}

   220  public:

   221   Bytecode_invoke(methodHandle method, int bci)  : Bytecode_member_ref(method, bci) { verify(); }

   222   void verify() const;

   224   // Attributes

   225   methodHandle static_target(TRAPS);             // "specified" method   (from constant pool)

   226   Handle       appendix(TRAPS);                  // if CPCE::has_appendix (from constant pool)

   228   // Testers

   229   bool is_invokeinterface() const                { return invoke_code() == Bytecodes::_invokeinterface; }

   230   bool is_invokevirtual() const                  { return invoke_code() == Bytecodes::_invokevirtual; }

   231   bool is_invokestatic() const                   { return invoke_code() == Bytecodes::_invokestatic; }

   232   bool is_invokespecial() const                  { return invoke_code() == Bytecodes::_invokespecial; }

   233   bool is_invokedynamic() const                  { return invoke_code() == Bytecodes::_invokedynamic; }

   234   bool is_invokehandle() const                   { return invoke_code() == Bytecodes::_invokehandle; }

   236   bool has_receiver() const                      { return !is_invokestatic() && !is_invokedynamic(); }

   238   bool is_valid() const                          { return is_invokeinterface() ||

   239                                                           is_invokevirtual()   ||

   240                                                           is_invokestatic()    ||

   241                                                           is_invokespecial()   ||

   242                                                           is_invokedynamic()   ||

   243                                                           is_invokehandle(); }

   245   bool has_appendix()                            { return cpcache_entry()->has_appendix(); }

   247  private:

   248   // Helper to skip verification.   Used is_valid() to check if the result is really an invoke

   249   inline friend Bytecode_invoke Bytecode_invoke_check(methodHandle method, int bci);

   250 };

   252 inline Bytecode_invoke Bytecode_invoke_check(methodHandle method, int bci) {

   253   return Bytecode_invoke(method, bci, false);

   254 }

   257 // Abstraction for all field accesses (put/get field/static)

   258 class Bytecode_field: public Bytecode_member_ref {

   259  public:

   260   Bytecode_field(methodHandle method, int bci)  : Bytecode_member_ref(method, bci) { verify(); }

   262   // Testers

   263   bool is_getfield() const                       { return java_code() == Bytecodes::_getfield; }

   264   bool is_putfield() const                       { return java_code() == Bytecodes::_putfield; }

   265   bool is_getstatic() const                      { return java_code() == Bytecodes::_getstatic; }

   266   bool is_putstatic() const                      { return java_code() == Bytecodes::_putstatic; }

   268   bool is_getter() const                         { return is_getfield()  || is_getstatic(); }

   269   bool is_static() const                         { return is_getstatic() || is_putstatic(); }

   271   bool is_valid() const                          { return is_getfield()   ||

   272                                                           is_putfield()   ||

   273                                                           is_getstatic()  ||

   274                                                           is_putstatic(); }

   275   void verify() const;

   276 };

   278 // Abstraction for checkcast

   279 class Bytecode_checkcast: public Bytecode {

   280  public:

   281   Bytecode_checkcast(Method* method, address bcp): Bytecode(method, bcp) { verify(); }

   282   void verify() const { assert(Bytecodes::java_code(code()) == Bytecodes::_checkcast, "check checkcast"); }

   284   // Returns index

   285   long index() const   { return get_index_u2(Bytecodes::_checkcast); };

   286 };

   288 // Abstraction for instanceof

   289 class Bytecode_instanceof: public Bytecode {

   290  public:

   291   Bytecode_instanceof(Method* method, address bcp): Bytecode(method, bcp) { verify(); }

   292   void verify() const { assert(code() == Bytecodes::_instanceof, "check instanceof"); }

   294   // Returns index

   295   long index() const   { return get_index_u2(Bytecodes::_instanceof); };

   296 };

   298 class Bytecode_new: public Bytecode {

   299  public:

   300   Bytecode_new(Method* method, address bcp): Bytecode(method, bcp) { verify(); }

   301   void verify() const { assert(java_code() == Bytecodes::_new, "check new"); }

   303   // Returns index

   304   long index() const   { return get_index_u2(Bytecodes::_new); };

   305 };

   307 class Bytecode_multianewarray: public Bytecode {

   308  public:

   309   Bytecode_multianewarray(Method* method, address bcp): Bytecode(method, bcp) { verify(); }

   310   void verify() const { assert(java_code() == Bytecodes::_multianewarray, "check new"); }

   312   // Returns index

   313   long index() const   { return get_index_u2(Bytecodes::_multianewarray); };

   314 };

   316 class Bytecode_anewarray: public Bytecode {

   317  public:

   318   Bytecode_anewarray(Method* method, address bcp): Bytecode(method, bcp) { verify(); }

   319   void verify() const { assert(java_code() == Bytecodes::_anewarray, "check anewarray"); }

   321   // Returns index

   322   long index() const   { return get_index_u2(Bytecodes::_anewarray); };

   323 };

   325 // Abstraction for ldc, ldc_w and ldc2_w

   326 class Bytecode_loadconstant: public Bytecode {

   327  private:

   328   const methodHandle _method;

   330   int raw_index() const;

   332  public:

   333   Bytecode_loadconstant(methodHandle method, int bci): Bytecode(method(), method->bcp_from(bci)), _method(method) { verify(); }

   335   void verify() const {

   336     assert(_method.not_null(), "must supply method");

   337     Bytecodes::Code stdc = Bytecodes::java_code(code());

   338     assert(stdc == Bytecodes::_ldc ||

   339            stdc == Bytecodes::_ldc_w ||

   340            stdc == Bytecodes::_ldc2_w, "load constant");

   341   }

   343   // Only non-standard bytecodes (fast_aldc) have reference cache indexes.

   344   bool has_cache_index() const { return code() >= Bytecodes::number_of_java_codes; }

   346   int pool_index() const;               // index into constant pool

   347   int cache_index() const {             // index into reference cache (or -1 if none)

   348     return has_cache_index() ? raw_index() : -1;

   349   }

   351   BasicType result_type() const;        // returns the result type of the ldc

   353   oop resolve_constant(TRAPS) const;

   354 };

   356 #endif // SHARE_VM_INTERPRETER_BYTECODE_HPP

Mercurial > jdk8-mips64-public > hotspot / file revision

src/share/vm/interpreter/bytecode.hpp@f34d701e952e

src/share/vm/interpreter/bytecode.hpp