jrose@1145: /*
twisti@2436:  * Copyright (c) 2008, 2011, Oracle and/or its affiliates. All rights reserved.
jrose@1145:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
jrose@1145:  *
jrose@1145:  * This code is free software; you can redistribute it and/or modify it
jrose@1145:  * under the terms of the GNU General Public License version 2 only, as
jrose@1145:  * published by the Free Software Foundation.
jrose@1145:  *
jrose@1145:  * This code is distributed in the hope that it will be useful, but WITHOUT
jrose@1145:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
jrose@1145:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
jrose@1145:  * version 2 for more details (a copy is included in the LICENSE file that
jrose@1145:  * accompanied this code).
jrose@1145:  *
jrose@1145:  * You should have received a copy of the GNU General Public License version
jrose@1145:  * 2 along with this work; if not, write to the Free Software Foundation,
jrose@1145:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
jrose@1145:  *
trims@1907:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907:  * or visit www.oracle.com if you need additional information or have any
trims@1907:  * questions.
jrose@1145:  *
jrose@1145:  */
jrose@1145: 
stefank@2314: #ifndef SHARE_VM_PRIMS_METHODHANDLES_HPP
stefank@2314: #define SHARE_VM_PRIMS_METHODHANDLES_HPP
stefank@2314: 
stefank@2314: #include "classfile/javaClasses.hpp"
stefank@2314: #include "classfile/vmSymbols.hpp"
stefank@2314: #include "runtime/frame.inline.hpp"
stefank@2314: #include "runtime/globals.hpp"
stefank@2314: #include "runtime/interfaceSupport.hpp"
stefank@2314: 
jrose@1145: class MacroAssembler;
jrose@1145: class Label;
jrose@1145: class MethodHandleEntry;
jrose@1145: 
jrose@1145: class MethodHandles: AllStatic {
jrose@1145:   // JVM support for MethodHandle, MethodType, and related types
jrose@2639:   // in java.lang.invoke and sun.invoke.
jrose@2639:   // See also  javaClasses for layouts java_lang_invoke_Method{Handle,Type,Type::Form}.
jrose@1145:  public:
jrose@1145:   enum EntryKind {
jrose@1474:     _raise_exception,           // stub for error generation from other stubs
jrose@1145:     _invokestatic_mh,           // how a MH emulates invokestatic
jrose@1145:     _invokespecial_mh,          // ditto for the other invokes...
jrose@1145:     _invokevirtual_mh,
jrose@1145:     _invokeinterface_mh,
jrose@1145:     _bound_ref_mh,              // reference argument is bound
jrose@1145:     _bound_int_mh,              // int argument is bound (via an Integer or Float)
jrose@1145:     _bound_long_mh,             // long argument is bound (via a Long or Double)
jrose@1145:     _bound_ref_direct_mh,       // same as above, with direct linkage to methodOop
jrose@1145:     _bound_int_direct_mh,
jrose@1145:     _bound_long_direct_mh,
jrose@1145: 
jrose@1145:     _adapter_mh_first,     // adapter sequence goes here...
jrose@2639:     _adapter_retype_only   = _adapter_mh_first + java_lang_invoke_AdapterMethodHandle::OP_RETYPE_ONLY,
jrose@2639:     _adapter_retype_raw    = _adapter_mh_first + java_lang_invoke_AdapterMethodHandle::OP_RETYPE_RAW,
jrose@2639:     _adapter_check_cast    = _adapter_mh_first + java_lang_invoke_AdapterMethodHandle::OP_CHECK_CAST,
jrose@2639:     _adapter_prim_to_prim  = _adapter_mh_first + java_lang_invoke_AdapterMethodHandle::OP_PRIM_TO_PRIM,
jrose@2639:     _adapter_ref_to_prim   = _adapter_mh_first + java_lang_invoke_AdapterMethodHandle::OP_REF_TO_PRIM,
jrose@2639:     _adapter_prim_to_ref   = _adapter_mh_first + java_lang_invoke_AdapterMethodHandle::OP_PRIM_TO_REF,
jrose@2639:     _adapter_swap_args     = _adapter_mh_first + java_lang_invoke_AdapterMethodHandle::OP_SWAP_ARGS,
jrose@2639:     _adapter_rot_args      = _adapter_mh_first + java_lang_invoke_AdapterMethodHandle::OP_ROT_ARGS,
jrose@2639:     _adapter_dup_args      = _adapter_mh_first + java_lang_invoke_AdapterMethodHandle::OP_DUP_ARGS,
jrose@2639:     _adapter_drop_args     = _adapter_mh_first + java_lang_invoke_AdapterMethodHandle::OP_DROP_ARGS,
jrose@2639:     _adapter_collect_args  = _adapter_mh_first + java_lang_invoke_AdapterMethodHandle::OP_COLLECT_ARGS,
jrose@2639:     _adapter_spread_args   = _adapter_mh_first + java_lang_invoke_AdapterMethodHandle::OP_SPREAD_ARGS,
never@2895:     _adapter_fold_args     = _adapter_mh_first + java_lang_invoke_AdapterMethodHandle::OP_FOLD_ARGS,
never@2895:     _adapter_unused_13     = _adapter_mh_first + 13,  //hole in the CONV_OP enumeration
jrose@2639:     _adapter_mh_last       = _adapter_mh_first + java_lang_invoke_AdapterMethodHandle::CONV_OP_LIMIT - 1,
jrose@1145: 
jrose@1145:     // Optimized adapter types
jrose@1145: 
jrose@1145:     // argument list reordering
jrose@1145:     _adapter_opt_swap_1,
jrose@1145:     _adapter_opt_swap_2,
jrose@1145:     _adapter_opt_rot_1_up,
jrose@1145:     _adapter_opt_rot_1_down,
jrose@1145:     _adapter_opt_rot_2_up,
jrose@1145:     _adapter_opt_rot_2_down,
jrose@1145:     // primitive single to single:
jrose@1145:     _adapter_opt_i2i,           // i2c, i2z, i2b, i2s
jrose@1145:     // primitive double to single:
jrose@1145:     _adapter_opt_l2i,
jrose@1145:     _adapter_opt_d2f,
jrose@1145:     // primitive single to double:
jrose@1145:     _adapter_opt_i2l,
jrose@1145:     _adapter_opt_f2d,
jrose@1145:     // conversion between floating point and integer type is handled by Java
jrose@1145: 
jrose@1145:     // reference to primitive:
jrose@1145:     _adapter_opt_unboxi,
jrose@1145:     _adapter_opt_unboxl,
jrose@1145: 
never@2895:     // %% Maybe tame the following with a VM_SYMBOLS_DO type macro?
never@2895: 
never@2895:     // how a blocking adapter returns (platform-dependent)
never@2895:     _adapter_opt_return_ref,
never@2895:     _adapter_opt_return_int,
never@2895:     _adapter_opt_return_long,
never@2895:     _adapter_opt_return_float,
never@2895:     _adapter_opt_return_double,
never@2895:     _adapter_opt_return_void,
never@2895:     _adapter_opt_return_S0_ref,  // return ref to S=0 (last slot)
never@2895:     _adapter_opt_return_S1_ref,  // return ref to S=1 (2nd-to-last slot)
never@2895:     _adapter_opt_return_S2_ref,
never@2895:     _adapter_opt_return_S3_ref,
never@2895:     _adapter_opt_return_S4_ref,
never@2895:     _adapter_opt_return_S5_ref,
never@2895:     _adapter_opt_return_any,     // dynamically select r/i/l/f/d
never@2895:     _adapter_opt_return_FIRST = _adapter_opt_return_ref,
never@2895:     _adapter_opt_return_LAST  = _adapter_opt_return_any,
never@2895: 
never@2895:     // spreading (array length cases 0, 1, ...)
never@2895:     _adapter_opt_spread_0,       // spread empty array to N=0 arguments
never@2895:     _adapter_opt_spread_1_ref,   // spread Object[] to N=1 argument
never@2895:     _adapter_opt_spread_2_ref,   // spread Object[] to N=2 arguments
never@2895:     _adapter_opt_spread_3_ref,   // spread Object[] to N=3 arguments
never@2895:     _adapter_opt_spread_4_ref,   // spread Object[] to N=4 arguments
never@2895:     _adapter_opt_spread_5_ref,   // spread Object[] to N=5 arguments
never@2895:     _adapter_opt_spread_ref,     // spread Object[] to N arguments
never@2895:     _adapter_opt_spread_byte,    // spread byte[] or boolean[] to N arguments
never@2895:     _adapter_opt_spread_char,    // spread char[], etc., to N arguments
never@2895:     _adapter_opt_spread_short,   // spread short[], etc., to N arguments
never@2895:     _adapter_opt_spread_int,     // spread int[], short[], etc., to N arguments
never@2895:     _adapter_opt_spread_long,    // spread long[] to N arguments
never@2895:     _adapter_opt_spread_float,   // spread float[] to N arguments
never@2895:     _adapter_opt_spread_double,  // spread double[] to N arguments
never@2895:     _adapter_opt_spread_FIRST = _adapter_opt_spread_0,
never@2895:     _adapter_opt_spread_LAST  = _adapter_opt_spread_double,
never@2895: 
never@2895:     // blocking filter/collect conversions
never@2895:     // These collect N arguments and replace them (at slot S) by a return value
never@2895:     // which is passed to the final target, along with the unaffected arguments.
never@2895:     // collect_{N}_{T} collects N arguments at any position into a T value
never@2895:     // collect_{N}_S{S}_{T} collects N arguments at slot S into a T value
never@2895:     // collect_{T} collects any number of arguments at any position
never@2895:     // filter_S{S}_{T} is the same as collect_1_S{S}_{T} (a unary collection)
never@2895:     // (collect_2 is also usable as a filter, with long or double arguments)
never@2895:     _adapter_opt_collect_ref,    // combine N arguments, replace with a reference
never@2895:     _adapter_opt_collect_int,    // combine N arguments, replace with an int, short, etc.
never@2895:     _adapter_opt_collect_long,   // combine N arguments, replace with a long
never@2895:     _adapter_opt_collect_float,  // combine N arguments, replace with a float
never@2895:     _adapter_opt_collect_double, // combine N arguments, replace with a double
never@2895:     _adapter_opt_collect_void,   // combine N arguments, replace with nothing
never@2895:     // if there is a small fixed number to push, do so without a loop:
never@2895:     _adapter_opt_collect_0_ref,  // collect N=0 arguments, insert a reference
never@2895:     _adapter_opt_collect_1_ref,  // collect N=1 argument, replace with a reference
never@2895:     _adapter_opt_collect_2_ref,  // combine N=2 arguments, replace with a reference
never@2895:     _adapter_opt_collect_3_ref,  // combine N=3 arguments, replace with a reference
never@2895:     _adapter_opt_collect_4_ref,  // combine N=4 arguments, replace with a reference
never@2895:     _adapter_opt_collect_5_ref,  // combine N=5 arguments, replace with a reference
never@2895:     // filters are an important special case because they never move arguments:
never@2895:     _adapter_opt_filter_S0_ref,  // filter N=1 argument at S=0, replace with a reference
never@2895:     _adapter_opt_filter_S1_ref,  // filter N=1 argument at S=1, replace with a reference
never@2895:     _adapter_opt_filter_S2_ref,  // filter N=1 argument at S=2, replace with a reference
never@2895:     _adapter_opt_filter_S3_ref,  // filter N=1 argument at S=3, replace with a reference
never@2895:     _adapter_opt_filter_S4_ref,  // filter N=1 argument at S=4, replace with a reference
never@2895:     _adapter_opt_filter_S5_ref,  // filter N=1 argument at S=5, replace with a reference
never@2895:     // these move arguments, but they are important for boxing
never@2895:     _adapter_opt_collect_2_S0_ref,  // combine last N=2 arguments, replace with a reference
never@2895:     _adapter_opt_collect_2_S1_ref,  // combine N=2 arguments at S=1, replace with a reference
never@2895:     _adapter_opt_collect_2_S2_ref,  // combine N=2 arguments at S=2, replace with a reference
never@2895:     _adapter_opt_collect_2_S3_ref,  // combine N=2 arguments at S=3, replace with a reference
never@2895:     _adapter_opt_collect_2_S4_ref,  // combine N=2 arguments at S=4, replace with a reference
never@2895:     _adapter_opt_collect_2_S5_ref,  // combine N=2 arguments at S=5, replace with a reference
never@2895:     _adapter_opt_collect_FIRST = _adapter_opt_collect_ref,
never@2895:     _adapter_opt_collect_LAST  = _adapter_opt_collect_2_S5_ref,
never@2895: 
never@2895:     // blocking folding conversions
never@2895:     // these are like collects, but retain all the N arguments for the final target
never@2895:     //_adapter_opt_fold_0_ref,   // same as _adapter_opt_collect_0_ref
never@2895:     // fold_{N}_{T} processes N arguments at any position into a T value, which it inserts
never@2895:     // fold_{T} processes any number of arguments at any position
never@2895:     _adapter_opt_fold_ref,       // process N arguments, prepend a reference
never@2895:     _adapter_opt_fold_int,       // process N arguments, prepend an int, short, etc.
never@2895:     _adapter_opt_fold_long,      // process N arguments, prepend a long
never@2895:     _adapter_opt_fold_float,     // process N arguments, prepend a float
never@2895:     _adapter_opt_fold_double,    // process N arguments, prepend a double
never@2895:     _adapter_opt_fold_void,      // process N arguments, but leave the list unchanged
never@2895:     _adapter_opt_fold_1_ref,     // process N=1 argument, prepend a reference
never@2895:     _adapter_opt_fold_2_ref,     // process N=2 arguments, prepend a reference
never@2895:     _adapter_opt_fold_3_ref,     // process N=3 arguments, prepend a reference
never@2895:     _adapter_opt_fold_4_ref,     // process N=4 arguments, prepend a reference
never@2895:     _adapter_opt_fold_5_ref,     // process N=5 arguments, prepend a reference
never@2895:     _adapter_opt_fold_FIRST = _adapter_opt_fold_ref,
never@2895:     _adapter_opt_fold_LAST  = _adapter_opt_fold_5_ref,
jrose@1145: 
never@3105:     _adapter_opt_profiling,
never@3105: 
jrose@1145:     _EK_LIMIT,
jrose@1145:     _EK_FIRST = 0
jrose@1145:   };
jrose@1145: 
jrose@1145:  public:
jrose@1145:   static bool enabled()                         { return _enabled; }
jrose@1145:   static void set_enabled(bool z);
jrose@1145: 
jrose@1145:  private:
jrose@2639:   enum {  // import java_lang_invoke_AdapterMethodHandle::CONV_OP_*
jrose@2639:     CONV_OP_LIMIT         = java_lang_invoke_AdapterMethodHandle::CONV_OP_LIMIT,
jrose@2639:     CONV_OP_MASK          = java_lang_invoke_AdapterMethodHandle::CONV_OP_MASK,
never@2895:     CONV_TYPE_MASK        = java_lang_invoke_AdapterMethodHandle::CONV_TYPE_MASK,
jrose@2639:     CONV_VMINFO_MASK      = java_lang_invoke_AdapterMethodHandle::CONV_VMINFO_MASK,
jrose@2639:     CONV_VMINFO_SHIFT     = java_lang_invoke_AdapterMethodHandle::CONV_VMINFO_SHIFT,
jrose@2639:     CONV_OP_SHIFT         = java_lang_invoke_AdapterMethodHandle::CONV_OP_SHIFT,
jrose@2639:     CONV_DEST_TYPE_SHIFT  = java_lang_invoke_AdapterMethodHandle::CONV_DEST_TYPE_SHIFT,
jrose@2639:     CONV_SRC_TYPE_SHIFT   = java_lang_invoke_AdapterMethodHandle::CONV_SRC_TYPE_SHIFT,
jrose@2639:     CONV_STACK_MOVE_SHIFT = java_lang_invoke_AdapterMethodHandle::CONV_STACK_MOVE_SHIFT,
jrose@2639:     CONV_STACK_MOVE_MASK  = java_lang_invoke_AdapterMethodHandle::CONV_STACK_MOVE_MASK
jrose@1145:   };
jrose@1145: 
jrose@1145:   static bool _enabled;
jrose@1145:   static MethodHandleEntry* _entries[_EK_LIMIT];
jrose@1145:   static const char*        _entry_names[_EK_LIMIT+1];
jrose@1474:   static jobject            _raise_exception_method;
never@2895:   static address            _adapter_return_handlers[CONV_TYPE_MASK+1];
jrose@1474: 
twisti@1734:   // Adapters.
twisti@1734:   static MethodHandlesAdapterBlob* _adapter_code;
twisti@1734: 
jrose@1145:   static bool ek_valid(EntryKind ek)            { return (uint)ek < (uint)_EK_LIMIT; }
jrose@1145:   static bool conv_op_valid(int op)             { return (uint)op < (uint)CONV_OP_LIMIT; }
jrose@1145: 
jrose@1145:  public:
jrose@1145:   static bool    have_entry(EntryKind ek)       { return ek_valid(ek) && _entries[ek] != NULL; }
jrose@1145:   static MethodHandleEntry* entry(EntryKind ek) { assert(ek_valid(ek), "initialized");
jrose@1145:                                                   return _entries[ek]; }
jrose@1145:   static const char* entry_name(EntryKind ek)   { assert(ek_valid(ek), "oob");
jrose@1145:                                                   return _entry_names[ek]; }
jrose@1145:   static EntryKind adapter_entry_kind(int op)   { assert(conv_op_valid(op), "oob");
jrose@1145:                                                   return EntryKind(_adapter_mh_first + op); }
jrose@1145: 
jrose@1145:   static void init_entry(EntryKind ek, MethodHandleEntry* me) {
jrose@1145:     assert(ek_valid(ek), "oob");
jrose@1145:     assert(_entries[ek] == NULL, "no double initialization");
jrose@1145:     _entries[ek] = me;
jrose@1145:   }
jrose@1145: 
twisti@1739:   // Some adapter helper functions.
never@2895:   static EntryKind ek_original_kind(EntryKind ek) {
never@2895:     if (ek <= _adapter_mh_last)  return ek;
twisti@1739:     switch (ek) {
never@2895:     case _adapter_opt_swap_1:
never@2895:     case _adapter_opt_swap_2:
never@2895:       return _adapter_swap_args;
never@2895:     case _adapter_opt_rot_1_up:
never@2895:     case _adapter_opt_rot_1_down:
never@2895:     case _adapter_opt_rot_2_up:
never@2895:     case _adapter_opt_rot_2_down:
never@2895:       return _adapter_rot_args;
never@2895:     case _adapter_opt_i2i:
never@2895:     case _adapter_opt_l2i:
never@2895:     case _adapter_opt_d2f:
never@2895:     case _adapter_opt_i2l:
never@2895:     case _adapter_opt_f2d:
never@2895:       return _adapter_prim_to_prim;
never@2895:     case _adapter_opt_unboxi:
never@2895:     case _adapter_opt_unboxl:
never@2895:       return _adapter_ref_to_prim;
twisti@1739:     }
never@2895:     if (ek >= _adapter_opt_spread_FIRST && ek <= _adapter_opt_spread_LAST)
never@2895:       return _adapter_spread_args;
never@2895:     if (ek >= _adapter_opt_collect_FIRST && ek <= _adapter_opt_collect_LAST)
never@2895:       return _adapter_collect_args;
never@2895:     if (ek >= _adapter_opt_fold_FIRST && ek <= _adapter_opt_fold_LAST)
never@2895:       return _adapter_fold_args;
never@2895:     if (ek >= _adapter_opt_return_FIRST && ek <= _adapter_opt_return_LAST)
never@2895:       return _adapter_opt_return_any;
never@3105:     if (ek == _adapter_opt_profiling)
never@3105:       return _adapter_retype_only;
never@2895:     assert(false, "oob");
never@2895:     return _EK_LIMIT;
twisti@1739:   }
twisti@1739: 
never@2895:   static bool ek_supported(MethodHandles::EntryKind ek);
never@2895: 
never@2895:   static BasicType ek_bound_mh_arg_type(EntryKind ek) {
twisti@1739:     switch (ek) {
never@2895:     case _bound_int_mh         : // fall-thru
never@2895:     case _bound_int_direct_mh  : return T_INT;
never@2895:     case _bound_long_mh        : // fall-thru
never@2895:     case _bound_long_direct_mh : return T_LONG;
never@2895:     default                    : return T_OBJECT;
twisti@1739:     }
twisti@1739:   }
twisti@1739: 
never@2895:   static int ek_adapter_opt_swap_slots(EntryKind ek) {
twisti@1739:     switch (ek) {
never@2895:     case _adapter_opt_swap_1        : return  1;
never@2895:     case _adapter_opt_swap_2        : return  2;
never@2895:     case _adapter_opt_rot_1_up      : return  1;
never@2895:     case _adapter_opt_rot_1_down    : return  1;
never@2895:     case _adapter_opt_rot_2_up      : return  2;
never@2895:     case _adapter_opt_rot_2_down    : return  2;
never@2895:     default : ShouldNotReachHere();   return -1;
never@2895:     }
never@2895:   }
never@2895: 
never@2895:   static int ek_adapter_opt_swap_mode(EntryKind ek) {
never@2895:     switch (ek) {
never@2895:     case _adapter_opt_swap_1       : return  0;
never@2895:     case _adapter_opt_swap_2       : return  0;
never@2895:     case _adapter_opt_rot_1_up     : return  1;
never@2895:     case _adapter_opt_rot_1_down   : return -1;
never@2895:     case _adapter_opt_rot_2_up     : return  1;
never@2895:     case _adapter_opt_rot_2_down   : return -1;
never@2895:     default : ShouldNotReachHere();  return  0;
never@2895:     }
never@2895:   }
never@2895: 
never@2895:   static int ek_adapter_opt_collect_count(EntryKind ek) {
never@2895:     assert(ek >= _adapter_opt_collect_FIRST && ek <= _adapter_opt_collect_LAST ||
never@2895:            ek >= _adapter_opt_fold_FIRST    && ek <= _adapter_opt_fold_LAST, "");
never@2895:     switch (ek) {
never@2895:     case _adapter_opt_collect_0_ref    : return  0;
never@2895:     case _adapter_opt_filter_S0_ref    :
never@2895:     case _adapter_opt_filter_S1_ref    :
never@2895:     case _adapter_opt_filter_S2_ref    :
never@2895:     case _adapter_opt_filter_S3_ref    :
never@2895:     case _adapter_opt_filter_S4_ref    :
never@2895:     case _adapter_opt_filter_S5_ref    :
never@2895:     case _adapter_opt_fold_1_ref       :
never@2895:     case _adapter_opt_collect_1_ref    : return  1;
never@2895:     case _adapter_opt_collect_2_S0_ref :
never@2895:     case _adapter_opt_collect_2_S1_ref :
never@2895:     case _adapter_opt_collect_2_S2_ref :
never@2895:     case _adapter_opt_collect_2_S3_ref :
never@2895:     case _adapter_opt_collect_2_S4_ref :
never@2895:     case _adapter_opt_collect_2_S5_ref :
never@2895:     case _adapter_opt_fold_2_ref       :
never@2895:     case _adapter_opt_collect_2_ref    : return  2;
never@2895:     case _adapter_opt_fold_3_ref       :
never@2895:     case _adapter_opt_collect_3_ref    : return  3;
never@2895:     case _adapter_opt_fold_4_ref       :
never@2895:     case _adapter_opt_collect_4_ref    : return  4;
never@2895:     case _adapter_opt_fold_5_ref       :
never@2895:     case _adapter_opt_collect_5_ref    : return  5;
never@2895:     default                            : return -1;  // sentinel value for "variable"
never@2895:     }
never@2895:   }
never@2895: 
never@2895:   static int ek_adapter_opt_collect_slot(EntryKind ek) {
never@2895:     assert(ek >= _adapter_opt_collect_FIRST && ek <= _adapter_opt_collect_LAST ||
never@2895:            ek >= _adapter_opt_fold_FIRST    && ek <= _adapter_opt_fold_LAST, "");
never@2895:     switch (ek) {
never@2895:     case _adapter_opt_collect_2_S0_ref  :
never@2895:     case _adapter_opt_filter_S0_ref     : return 0;
never@2895:     case _adapter_opt_collect_2_S1_ref  :
never@2895:     case _adapter_opt_filter_S1_ref     : return 1;
never@2895:     case _adapter_opt_collect_2_S2_ref  :
never@2895:     case _adapter_opt_filter_S2_ref     : return 2;
never@2895:     case _adapter_opt_collect_2_S3_ref  :
never@2895:     case _adapter_opt_filter_S3_ref     : return 3;
never@2895:     case _adapter_opt_collect_2_S4_ref  :
never@2895:     case _adapter_opt_filter_S4_ref     : return 4;
never@2895:     case _adapter_opt_collect_2_S5_ref  :
never@2895:     case _adapter_opt_filter_S5_ref     : return 5;
never@2895:     default                             : return -1;  // sentinel value for "variable"
never@2895:     }
never@2895:   }
never@2895: 
never@2895:   static BasicType ek_adapter_opt_collect_type(EntryKind ek) {
never@2895:     assert(ek >= _adapter_opt_collect_FIRST && ek <= _adapter_opt_collect_LAST ||
never@2895:            ek >= _adapter_opt_fold_FIRST    && ek <= _adapter_opt_fold_LAST, "");
never@2895:     switch (ek) {
never@2895:     case _adapter_opt_fold_int          :
never@2895:     case _adapter_opt_collect_int       : return T_INT;
never@2895:     case _adapter_opt_fold_long         :
never@2895:     case _adapter_opt_collect_long      : return T_LONG;
never@2895:     case _adapter_opt_fold_float        :
never@2895:     case _adapter_opt_collect_float     : return T_FLOAT;
never@2895:     case _adapter_opt_fold_double       :
never@2895:     case _adapter_opt_collect_double    : return T_DOUBLE;
never@2895:     case _adapter_opt_fold_void         :
never@2895:     case _adapter_opt_collect_void      : return T_VOID;
never@2895:     default                             : return T_OBJECT;
never@2895:     }
never@2895:   }
never@2895: 
never@2895:   static int ek_adapter_opt_return_slot(EntryKind ek) {
never@2895:     assert(ek >= _adapter_opt_return_FIRST && ek <= _adapter_opt_return_LAST, "");
never@2895:     switch (ek) {
never@2895:     case _adapter_opt_return_S0_ref : return 0;
never@2895:     case _adapter_opt_return_S1_ref : return 1;
never@2895:     case _adapter_opt_return_S2_ref : return 2;
never@2895:     case _adapter_opt_return_S3_ref : return 3;
never@2895:     case _adapter_opt_return_S4_ref : return 4;
never@2895:     case _adapter_opt_return_S5_ref : return 5;
never@2895:     default                         : return -1;  // sentinel value for "variable"
never@2895:     }
never@2895:   }
never@2895: 
never@2895:   static BasicType ek_adapter_opt_return_type(EntryKind ek) {
never@2895:     assert(ek >= _adapter_opt_return_FIRST && ek <= _adapter_opt_return_LAST, "");
never@2895:     switch (ek) {
never@2895:     case _adapter_opt_return_int    : return T_INT;
never@2895:     case _adapter_opt_return_long   : return T_LONG;
never@2895:     case _adapter_opt_return_float  : return T_FLOAT;
never@2895:     case _adapter_opt_return_double : return T_DOUBLE;
never@2895:     case _adapter_opt_return_void   : return T_VOID;
never@2895:     case _adapter_opt_return_any    : return T_CONFLICT;  // sentinel value for "variable"
never@2895:     default                         : return T_OBJECT;
never@2895:     }
never@2895:   }
never@2895: 
never@2895:   static int ek_adapter_opt_spread_count(EntryKind ek) {
never@2895:     assert(ek >= _adapter_opt_spread_FIRST && ek <= _adapter_opt_spread_LAST, "");
never@2895:     switch (ek) {
never@2895:     case _adapter_opt_spread_0     : return  0;
never@2895:     case _adapter_opt_spread_1_ref : return  1;
never@2895:     case _adapter_opt_spread_2_ref : return  2;
never@2895:     case _adapter_opt_spread_3_ref : return  3;
never@2895:     case _adapter_opt_spread_4_ref : return  4;
never@2895:     case _adapter_opt_spread_5_ref : return  5;
never@2895:     default                        : return -1;  // sentinel value for "variable"
never@2895:     }
never@2895:   }
never@2895: 
never@2895:   static BasicType ek_adapter_opt_spread_type(EntryKind ek) {
never@2895:     assert(ek >= _adapter_opt_spread_FIRST && ek <= _adapter_opt_spread_LAST, "");
never@2895:     switch (ek) {
never@2895:     // (there is no _adapter_opt_spread_boolean; we use byte)
never@2895:     case _adapter_opt_spread_byte   : return T_BYTE;
never@2895:     case _adapter_opt_spread_char   : return T_CHAR;
never@2895:     case _adapter_opt_spread_short  : return T_SHORT;
never@2895:     case _adapter_opt_spread_int    : return T_INT;
never@2895:     case _adapter_opt_spread_long   : return T_LONG;
never@2895:     case _adapter_opt_spread_float  : return T_FLOAT;
never@2895:     case _adapter_opt_spread_double : return T_DOUBLE;
never@2895:     default                         : return T_OBJECT;
twisti@1739:     }
twisti@1739:   }
twisti@1739: 
jrose@1474:   static methodOop raise_exception_method() {
jrose@1474:     oop rem = JNIHandles::resolve(_raise_exception_method);
jrose@1474:     assert(rem == NULL || rem->is_method(), "");
jrose@1474:     return (methodOop) rem;
jrose@1474:   }
jrose@1474:   static void set_raise_exception_method(methodOop rem) {
jrose@1474:     assert(_raise_exception_method == NULL, "");
jrose@1474:     _raise_exception_method = JNIHandles::make_global(Handle(rem));
jrose@1474:   }
jrose@2941:   static methodOop resolve_raise_exception_method(TRAPS);
jrose@2941:   // call raise_exception_method from C code:
jrose@2941:   static void raise_exception(int code, oop actual, oop required, TRAPS);
jrose@1474: 
jrose@1145:   static jint adapter_conversion(int conv_op, BasicType src, BasicType dest,
jrose@1145:                                  int stack_move = 0, int vminfo = 0) {
jrose@1145:     assert(conv_op_valid(conv_op), "oob");
jrose@1145:     jint conv = ((conv_op      << CONV_OP_SHIFT)
jrose@1145:                  | (src        << CONV_SRC_TYPE_SHIFT)
jrose@1145:                  | (dest       << CONV_DEST_TYPE_SHIFT)
jrose@1145:                  | (stack_move << CONV_STACK_MOVE_SHIFT)
jrose@1145:                  | (vminfo     << CONV_VMINFO_SHIFT)
jrose@1145:                  );
jrose@1145:     assert(adapter_conversion_op(conv) == conv_op, "decode conv_op");
jrose@1145:     assert(adapter_conversion_src_type(conv) == src, "decode src");
jrose@1145:     assert(adapter_conversion_dest_type(conv) == dest, "decode dest");
jrose@1145:     assert(adapter_conversion_stack_move(conv) == stack_move, "decode stack_move");
jrose@1145:     assert(adapter_conversion_vminfo(conv) == vminfo, "decode vminfo");
jrose@1145:     return conv;
jrose@1145:   }
jrose@1145:   static int adapter_conversion_op(jint conv) {
jrose@1145:     return ((conv >> CONV_OP_SHIFT) & 0xF);
jrose@1145:   }
jrose@1145:   static BasicType adapter_conversion_src_type(jint conv) {
jrose@1145:     return (BasicType)((conv >> CONV_SRC_TYPE_SHIFT) & 0xF);
jrose@1145:   }
jrose@1145:   static BasicType adapter_conversion_dest_type(jint conv) {
jrose@1145:     return (BasicType)((conv >> CONV_DEST_TYPE_SHIFT) & 0xF);
jrose@1145:   }
jrose@1145:   static int adapter_conversion_stack_move(jint conv) {
jrose@1145:     return (conv >> CONV_STACK_MOVE_SHIFT);
jrose@1145:   }
jrose@1145:   static int adapter_conversion_vminfo(jint conv) {
jrose@1145:     return (conv >> CONV_VMINFO_SHIFT) & CONV_VMINFO_MASK;
jrose@1145:   }
jrose@1145: 
jrose@1862:   // Bit mask of conversion_op values.  May vary by platform.
jrose@1862:   static int adapter_conversion_ops_supported_mask();
jrose@1862: 
never@2895:   static bool conv_op_supported(int conv_op) {
never@2895:     assert(conv_op_valid(conv_op), "");
never@2895:     return ((adapter_conversion_ops_supported_mask() & nth_bit(conv_op)) != 0);
never@2895:   }
never@2895: 
jrose@1145:   // Offset in words that the interpreter stack pointer moves when an argument is pushed.
jrose@1145:   // The stack_move value must always be a multiple of this.
jrose@1145:   static int stack_move_unit() {
twisti@1861:     return frame::interpreter_frame_expression_stack_direction() * Interpreter::stackElementWords;
jrose@1145:   }
jrose@1145: 
never@2895:   // Adapter frame traversal.  (Implementation-specific.)
never@2895:   static frame ricochet_frame_sender(const frame& fr, RegisterMap* reg_map);
never@2895:   static void ricochet_frame_oops_do(const frame& fr, OopClosure* blk, const RegisterMap* reg_map);
never@2895: 
jrose@1145:   enum { CONV_VMINFO_SIGN_FLAG = 0x80 };
twisti@2204:   // Shift values for prim-to-prim conversions.
twisti@2204:   static int adapter_prim_to_prim_subword_vminfo(BasicType dest) {
twisti@2204:     if (dest == T_BOOLEAN) return (BitsPerInt - 1);  // boolean is 1 bit
twisti@2204:     if (dest == T_CHAR)    return (BitsPerInt - BitsPerShort);
twisti@2204:     if (dest == T_BYTE)    return (BitsPerInt - BitsPerByte ) | CONV_VMINFO_SIGN_FLAG;
twisti@2204:     if (dest == T_SHORT)   return (BitsPerInt - BitsPerShort) | CONV_VMINFO_SIGN_FLAG;
twisti@2204:     return 0;                   // case T_INT
twisti@2204:   }
twisti@2204:   // Shift values for unboxing a primitive.
twisti@2204:   static int adapter_unbox_subword_vminfo(BasicType dest) {
twisti@2204:     if (dest == T_BOOLEAN) return (BitsPerInt - BitsPerByte );  // implemented as 1 byte
twisti@2204:     if (dest == T_CHAR)    return (BitsPerInt - BitsPerShort);
twisti@2204:     if (dest == T_BYTE)    return (BitsPerInt - BitsPerByte ) | CONV_VMINFO_SIGN_FLAG;
twisti@2204:     if (dest == T_SHORT)   return (BitsPerInt - BitsPerShort) | CONV_VMINFO_SIGN_FLAG;
jrose@1145:     return 0;                   // case T_INT
jrose@1145:   }
jrose@1145:   // Here is the transformation the i2i adapter must perform:
jrose@1145:   static int truncate_subword_from_vminfo(jint value, int vminfo) {
bdelsart@3142:     int shift = vminfo & ~CONV_VMINFO_SIGN_FLAG;
bdelsart@3142:     jint tem = value << shift;
jrose@1145:     if ((vminfo & CONV_VMINFO_SIGN_FLAG) != 0) {
bdelsart@3142:       return (jint)tem >> shift;
jrose@1145:     } else {
bdelsart@3142:       return (juint)tem >> shift;
jrose@1145:     }
jrose@1145:   }
jrose@1145: 
jrose@1145:   static inline address from_compiled_entry(EntryKind ek);
jrose@1145:   static inline address from_interpreted_entry(EntryKind ek);
jrose@1145: 
jrose@1145:   // helpers for decode_method.
twisti@2806:   static methodOop    decode_methodOop(methodOop m, int& decode_flags_result);
twisti@2806:   static methodHandle decode_vmtarget(oop vmtarget, int vmindex, oop mtype, KlassHandle& receiver_limit_result, int& decode_flags_result);
twisti@2806:   static methodHandle decode_MemberName(oop mname, KlassHandle& receiver_limit_result, int& decode_flags_result);
twisti@2806:   static methodHandle decode_MethodHandle(oop mh, KlassHandle& receiver_limit_result, int& decode_flags_result);
twisti@2806:   static methodHandle decode_DirectMethodHandle(oop mh, KlassHandle& receiver_limit_result, int& decode_flags_result);
twisti@2806:   static methodHandle decode_BoundMethodHandle(oop mh, KlassHandle& receiver_limit_result, int& decode_flags_result);
twisti@2806:   static methodHandle decode_AdapterMethodHandle(oop mh, KlassHandle& receiver_limit_result, int& decode_flags_result);
jrose@1145: 
jrose@1145:   // Find out how many stack slots an mh pushes or pops.
jrose@1145:   // The result is *not* reported as a multiple of stack_move_unit();
jrose@1145:   // It is a signed net number of pushes (a difference in vmslots).
jrose@1145:   // To compare with a stack_move value, first multiply by stack_move_unit().
jrose@1145:   static int decode_MethodHandle_stack_pushes(oop mh);
jrose@1145: 
jrose@1145:  public:
jrose@1145:   // working with member names
jrose@1145:   static void resolve_MemberName(Handle mname, TRAPS); // compute vmtarget/vmindex from name/type
jrose@1145:   static void expand_MemberName(Handle mname, int suppress, TRAPS);  // expand defc/name/type if missing
jrose@1862:   static Handle new_MemberName(TRAPS);  // must be followed by init_MemberName
jrose@1145:   static void init_MemberName(oop mname_oop, oop target); // compute vmtarget/vmindex from target
jrose@1862:   static void init_MemberName(oop mname_oop, methodOop m, bool do_dispatch = true);
jrose@1145:   static void init_MemberName(oop mname_oop, klassOop field_holder, AccessFlags mods, int offset);
coleenp@2497:   static int find_MemberNames(klassOop k, Symbol* name, Symbol* sig,
jrose@1145:                               int mflags, klassOop caller,
jrose@1145:                               int skip, objArrayOop results);
jrose@1145:   // bit values for suppress argument to expand_MemberName:
jrose@1145:   enum { _suppress_defc = 1, _suppress_name = 2, _suppress_type = 4 };
jrose@1145: 
twisti@1734:   // Generate MethodHandles adapters.
twisti@2436:   static void generate_adapters();
twisti@1734: 
twisti@1734:   // Called from InterpreterGenerator and MethodHandlesAdapterGenerator.
jrose@1145:   static address generate_method_handle_interpreter_entry(MacroAssembler* _masm);
twisti@2436:   static void generate_method_handle_stub(MacroAssembler* _masm, EntryKind ek);
jrose@1145: 
jrose@1145:   // argument list parsing
jrose@1145:   static int argument_slot(oop method_type, int arg);
jrose@1145:   static int argument_slot_count(oop method_type) { return argument_slot(method_type, -1); }
jrose@1145:   static int argument_slot_to_argnum(oop method_type, int argslot);
jrose@1145: 
jrose@1145:   // Runtime support
jrose@1145:   enum {                        // bit-encoded flags from decode_method or decode_vmref
jrose@1145:     _dmf_has_receiver   = 0x01, // target method has leading reference argument
jrose@1145:     _dmf_does_dispatch  = 0x02, // method handle performs virtual or interface dispatch
jrose@1145:     _dmf_from_interface = 0x04, // peforms interface dispatch
jrose@1145:     _DMF_DIRECT_MASK    = (_dmf_from_interface*2 - _dmf_has_receiver),
jrose@1145:     _dmf_binds_method   = 0x08,
jrose@1145:     _dmf_binds_argument = 0x10,
jrose@1145:     _DMF_BOUND_MASK     = (_dmf_binds_argument*2 - _dmf_binds_method),
jrose@1145:     _dmf_adapter_lsb    = 0x20,
jrose@1145:     _DMF_ADAPTER_MASK   = (_dmf_adapter_lsb << CONV_OP_LIMIT) - _dmf_adapter_lsb
jrose@1145:   };
twisti@2806:   static methodHandle decode_method(oop x, KlassHandle& receiver_limit_result, int& decode_flags_result);
jrose@1145:   enum {
jrose@1145:     // format of query to getConstant:
jrose@1145:     GC_JVM_PUSH_LIMIT = 0,
jrose@1474:     GC_JVM_STACK_MOVE_UNIT = 1,
jrose@1862:     GC_CONV_OP_IMPLEMENTED_MASK = 2,
never@2954:     GC_OP_ROT_ARGS_DOWN_LIMIT_BIAS = 3,
never@3105:     GC_COUNT_GWT = 4,
jrose@1145: 
jrose@1145:     // format of result from getTarget / encode_target:
jrose@1145:     ETF_HANDLE_OR_METHOD_NAME = 0, // all available data (immediate MH or method)
jrose@1145:     ETF_DIRECT_HANDLE         = 1, // ultimate method handle (will be a DMH, may be self)
jrose@1145:     ETF_METHOD_NAME           = 2, // ultimate method as MemberName
never@2954:     ETF_REFLECT_METHOD        = 3, // ultimate method as java.lang.reflect object (sans refClass)
jrose@2982:     ETF_FORCE_DIRECT_HANDLE   = 64,
jrose@2982:     ETF_COMPILE_DIRECT_HANDLE = 65,
never@2954: 
never@2954:     // ad hoc constants
never@2954:     OP_ROT_ARGS_DOWN_LIMIT_BIAS = -1
jrose@1145:   };
jrose@1145:   static int get_named_constant(int which, Handle name_box, TRAPS);
jrose@1145:   static oop encode_target(Handle mh, int format, TRAPS); // report vmtarget (to Java code)
jrose@1145:   static bool class_cast_needed(klassOop src, klassOop dst);
jrose@1145: 
jrose@1862:   static instanceKlassHandle resolve_instance_klass(oop    java_mirror_oop, TRAPS);
jrose@1862:   static instanceKlassHandle resolve_instance_klass(jclass java_mirror_jh,  TRAPS) {
jrose@1862:     return resolve_instance_klass(JNIHandles::resolve(java_mirror_jh), THREAD);
jrose@1862:   }
jrose@1862: 
jrose@1145:  private:
jrose@1145:   // These checkers operate on a pair of whole MethodTypes:
jrose@1145:   static const char* check_method_type_change(oop src_mtype, int src_beg, int src_end,
jrose@1145:                                               int insert_argnum, oop insert_type,
jrose@1145:                                               int change_argnum, oop change_type,
jrose@1145:                                               int delete_argnum,
jrose@1474:                                               oop dst_mtype, int dst_beg, int dst_end,
jrose@1474:                                               bool raw = false);
jrose@1145:   static const char* check_method_type_insertion(oop src_mtype,
jrose@1145:                                                  int insert_argnum, oop insert_type,
jrose@1145:                                                  oop dst_mtype) {
jrose@1145:     oop no_ref = NULL;
jrose@1145:     return check_method_type_change(src_mtype, 0, -1,
jrose@1145:                                     insert_argnum, insert_type,
jrose@1145:                                     -1, no_ref, -1, dst_mtype, 0, -1);
jrose@1145:   }
jrose@1145:   static const char* check_method_type_conversion(oop src_mtype,
jrose@1145:                                                   int change_argnum, oop change_type,
jrose@1145:                                                   oop dst_mtype) {
jrose@1145:     oop no_ref = NULL;
jrose@1145:     return check_method_type_change(src_mtype, 0, -1, -1, no_ref,
jrose@1145:                                     change_argnum, change_type,
jrose@1145:                                     -1, dst_mtype, 0, -1);
jrose@1145:   }
jrose@1474:   static const char* check_method_type_passthrough(oop src_mtype, oop dst_mtype, bool raw) {
jrose@1145:     oop no_ref = NULL;
jrose@1145:     return check_method_type_change(src_mtype, 0, -1,
jrose@1145:                                     -1, no_ref, -1, no_ref, -1,
jrose@1474:                                     dst_mtype, 0, -1, raw);
jrose@1145:   }
jrose@1145: 
jrose@1145:   // These checkers operate on pairs of argument or return types:
jrose@1145:   static const char* check_argument_type_change(BasicType src_type, klassOop src_klass,
jrose@1145:                                                 BasicType dst_type, klassOop dst_klass,
jrose@1474:                                                 int argnum, bool raw = false);
jrose@1145: 
jrose@1145:   static const char* check_argument_type_change(oop src_type, oop dst_type,
jrose@1474:                                                 int argnum, bool raw = false) {
jrose@1145:     klassOop src_klass = NULL, dst_klass = NULL;
jrose@1145:     BasicType src_bt = java_lang_Class::as_BasicType(src_type, &src_klass);
jrose@1145:     BasicType dst_bt = java_lang_Class::as_BasicType(dst_type, &dst_klass);
jrose@1145:     return check_argument_type_change(src_bt, src_klass,
jrose@1474:                                       dst_bt, dst_klass, argnum, raw);
jrose@1145:   }
jrose@1145: 
jrose@1474:   static const char* check_return_type_change(oop src_type, oop dst_type, bool raw = false) {
jrose@1474:     return check_argument_type_change(src_type, dst_type, -1, raw);
jrose@1145:   }
jrose@1145: 
jrose@1145:   static const char* check_return_type_change(BasicType src_type, klassOop src_klass,
jrose@1145:                                               BasicType dst_type, klassOop dst_klass) {
jrose@1145:     return check_argument_type_change(src_type, src_klass, dst_type, dst_klass, -1);
jrose@1145:   }
jrose@1145: 
jrose@1145:   static const char* check_method_receiver(methodOop m, klassOop passed_recv_type);
jrose@1145: 
jrose@1145:   // These verifiers can block, and will throw an error if the checking fails:
jrose@1145:   static void verify_vmslots(Handle mh, TRAPS);
jrose@1145:   static void verify_vmargslot(Handle mh, int argnum, int argslot, TRAPS);
jrose@1145: 
jrose@1145:   static void verify_method_type(methodHandle m, Handle mtype,
jrose@1145:                                  bool has_bound_oop,
jrose@1145:                                  KlassHandle bound_oop_type,
jrose@1145:                                  TRAPS);
jrose@1145: 
jrose@1145:   static void verify_method_signature(methodHandle m, Handle mtype,
jrose@1145:                                       int first_ptype_pos,
jrose@1145:                                       KlassHandle insert_ptype, TRAPS);
jrose@1145: 
jrose@1145:   static void verify_DirectMethodHandle(Handle mh, methodHandle m, TRAPS);
jrose@1145:   static void verify_BoundMethodHandle(Handle mh, Handle target, int argnum,
jrose@1145:                                        bool direct_to_method, TRAPS);
jrose@1145:   static void verify_BoundMethodHandle_with_receiver(Handle mh, methodHandle m, TRAPS);
jrose@1145:   static void verify_AdapterMethodHandle(Handle mh, int argnum, TRAPS);
jrose@1145: 
jrose@1145:  public:
jrose@1145: 
jrose@1145:   // Fill in the fields of a DirectMethodHandle mh.  (MH.type must be pre-filled.)
jrose@1145:   static void init_DirectMethodHandle(Handle mh, methodHandle method, bool do_dispatch, TRAPS);
jrose@1145: 
jrose@1145:   // Fill in the fields of a BoundMethodHandle mh.  (MH.type, BMH.argument must be pre-filled.)
jrose@1145:   static void init_BoundMethodHandle(Handle mh, Handle target, int argnum, TRAPS);
jrose@1145:   static void init_BoundMethodHandle_with_receiver(Handle mh,
jrose@1145:                                                    methodHandle original_m,
jrose@1145:                                                    KlassHandle receiver_limit,
jrose@1145:                                                    int decode_flags,
jrose@1145:                                                    TRAPS);
jrose@1145: 
jrose@1145:   // Fill in the fields of an AdapterMethodHandle mh.  (MH.type must be pre-filled.)
jrose@1145:   static void init_AdapterMethodHandle(Handle mh, Handle target, int argnum, TRAPS);
never@2895:   static void ensure_vmlayout_field(Handle target, TRAPS);
jrose@1145: 
jrose@1145: #ifdef ASSERT
jrose@1145:   static bool spot_check_entry_names();
jrose@1145: #endif
jrose@1145: 
jrose@1145:  private:
jrose@1145:   static methodHandle dispatch_decoded_method(methodHandle m,
jrose@1145:                                               KlassHandle receiver_limit,
jrose@1145:                                               int decode_flags,
jrose@1145:                                               KlassHandle receiver_klass,
jrose@1145:                                               TRAPS);
jrose@1145: 
twisti@2903: public:
twisti@2903:   static bool is_float_fixed_reinterpretation_cast(BasicType src, BasicType dst);
jrose@1145:   static bool same_basic_type_for_arguments(BasicType src, BasicType dst,
jrose@1474:                                             bool raw = false,
jrose@1145:                                             bool for_return = false);
jrose@1474:   static bool same_basic_type_for_returns(BasicType src, BasicType dst, bool raw = false) {
jrose@1474:     return same_basic_type_for_arguments(src, dst, raw, true);
jrose@1145:   }
jrose@1145: 
never@2895:   static Symbol* convert_to_signature(oop type_str, bool polymorphic, TRAPS);
never@2895: 
never@2895: #ifdef TARGET_ARCH_x86
never@2895: # include "methodHandles_x86.hpp"
never@2895: #endif
never@2895: #ifdef TARGET_ARCH_sparc
never@2950: # include "methodHandles_sparc.hpp"
never@2895: #endif
never@2895: #ifdef TARGET_ARCH_zero
never@2950: # include "methodHandles_zero.hpp"
never@2895: #endif
never@2895: #ifdef TARGET_ARCH_arm
bdelsart@2917: # include "methodHandles_arm.hpp"
never@2895: #endif
never@2895: #ifdef TARGET_ARCH_ppc
bdelsart@2917: # include "methodHandles_ppc.hpp"
never@2895: #endif
never@2895: 
never@2895: #ifdef TARGET_ARCH_NYI_6939861
never@2895:   // Here are some backward compatible declarations until the 6939861 ports are updated.
never@2895:   #define _adapter_flyby    (_EK_LIMIT + 10)
never@2895:   #define _adapter_ricochet (_EK_LIMIT + 11)
never@2895:   #define _adapter_opt_spread_1    _adapter_opt_spread_1_ref
never@2895:   #define _adapter_opt_spread_more _adapter_opt_spread_ref
never@2895:   enum {
jrose@1145:     _INSERT_NO_MASK   = -1,
jrose@1145:     _INSERT_REF_MASK  = 0,
jrose@1145:     _INSERT_INT_MASK  = 1,
jrose@1145:     _INSERT_LONG_MASK = 3
jrose@1145:   };
never@2895:   static void get_ek_bound_mh_info(EntryKind ek, BasicType& arg_type, int& arg_mask, int& arg_slots) {
never@2895:     arg_type = ek_bound_mh_arg_type(ek);
never@2895:     arg_mask = 0;
never@2895:     arg_slots = type2size[arg_type];;
never@2895:   }
never@2895:   static void get_ek_adapter_opt_swap_rot_info(EntryKind ek, int& swap_bytes, int& rotate) {
never@2895:     int swap_slots = ek_adapter_opt_swap_slots(ek);
never@2895:     rotate = ek_adapter_opt_swap_mode(ek);
never@2895:     swap_bytes = swap_slots * Interpreter::stackElementSize;
never@2895:   }
never@2895:   static int get_ek_adapter_opt_spread_info(EntryKind ek) {
never@2895:     return ek_adapter_opt_spread_count(ek);
never@2895:   }
never@2895: 
jrose@1145:   static void insert_arg_slots(MacroAssembler* _masm,
jrose@1145:                                RegisterOrConstant arg_slots,
jrose@1145:                                int arg_mask,
twisti@1739:                                Register argslot_reg,
twisti@1858:                                Register temp_reg, Register temp2_reg, Register temp3_reg = noreg);
jrose@1145: 
jrose@1145:   static void remove_arg_slots(MacroAssembler* _masm,
jrose@1145:                                RegisterOrConstant arg_slots,
twisti@1739:                                Register argslot_reg,
twisti@1858:                                Register temp_reg, Register temp2_reg, Register temp3_reg = noreg);
jrose@2148: 
jrose@2148:   static void trace_method_handle(MacroAssembler* _masm, const char* adaptername) PRODUCT_RETURN;
never@2895: #endif //TARGET_ARCH_NYI_6939861
jrose@1145: };
jrose@1145: 
jrose@1145: 
jrose@2639: // Access methods for the "entry" field of a java.lang.invoke.MethodHandle.
jrose@1145: // The field is primarily a jump target for compiled calls.
jrose@1145: // However, we squirrel away some nice pointers for other uses,
jrose@1145: // just before the jump target.
jrose@1145: // Aspects of a method handle entry:
jrose@1145: //  - from_compiled_entry - stub used when compiled code calls the MH
jrose@1145: //  - from_interpreted_entry - stub used when the interpreter calls the MH
jrose@1145: //  - type_checking_entry - stub for runtime casting between MHForm siblings (NYI)
jrose@1145: class MethodHandleEntry {
jrose@1145:  public:
jrose@1145:   class Data {
jrose@1145:     friend class MethodHandleEntry;
jrose@1145:     size_t              _total_size; // size including Data and code stub
jrose@1145:     MethodHandleEntry*  _type_checking_entry;
jrose@1145:     address             _from_interpreted_entry;
jrose@1145:     MethodHandleEntry* method_entry() { return (MethodHandleEntry*)(this + 1); }
jrose@1145:   };
jrose@1145: 
jrose@1145:   Data*     data()                              { return (Data*)this - 1; }
jrose@1145: 
jrose@1145:   address   start_address()                     { return (address) data(); }
jrose@1145:   address   end_address()                       { return start_address() + data()->_total_size; }
jrose@1145: 
jrose@1145:   address   from_compiled_entry()               { return (address) this; }
jrose@1145: 
jrose@1145:   address   from_interpreted_entry()            { return data()->_from_interpreted_entry; }
jrose@1145:   void  set_from_interpreted_entry(address e)   { data()->_from_interpreted_entry = e; }
jrose@1145: 
jrose@1145:   MethodHandleEntry* type_checking_entry()           { return data()->_type_checking_entry; }
jrose@1145:   void set_type_checking_entry(MethodHandleEntry* e) { data()->_type_checking_entry = e; }
jrose@1145: 
jrose@1145:   void set_end_address(address end_addr) {
jrose@1145:     size_t total_size = end_addr - start_address();
jrose@1145:     assert(total_size > 0 && total_size < 0x1000, "reasonable end address");
jrose@1145:     data()->_total_size = total_size;
jrose@1145:   }
jrose@1145: 
jrose@1145:   // Compiler support:
jrose@1145:   static int from_interpreted_entry_offset_in_bytes() {
jrose@1145:     return (int)( offset_of(Data, _from_interpreted_entry) - sizeof(Data) );
jrose@1145:   }
jrose@1145:   static int type_checking_entry_offset_in_bytes() {
jrose@1145:     return (int)( offset_of(Data, _from_interpreted_entry) - sizeof(Data) );
jrose@1145:   }
jrose@1145: 
jrose@1145:   static address            start_compiled_entry(MacroAssembler* _masm,
jrose@1145:                                                  address interpreted_entry = NULL);
jrose@1145:   static MethodHandleEntry* finish_compiled_entry(MacroAssembler* masm, address start_addr);
jrose@1145: };
jrose@1145: 
jrose@1145: address MethodHandles::from_compiled_entry(EntryKind ek) { return entry(ek)->from_compiled_entry(); }
jrose@1145: address MethodHandles::from_interpreted_entry(EntryKind ek) { return entry(ek)->from_interpreted_entry(); }
twisti@1734: 
twisti@1734: 
twisti@1734: //------------------------------------------------------------------------------
twisti@1734: // MethodHandlesAdapterGenerator
twisti@1734: //
twisti@1734: class MethodHandlesAdapterGenerator : public StubCodeGenerator {
twisti@1734: public:
never@2954:   MethodHandlesAdapterGenerator(CodeBuffer* code) : StubCodeGenerator(code, PrintMethodHandleStubs) {}
twisti@1734: 
twisti@2436:   void generate();
twisti@1734: };
stefank@2314: 
stefank@2314: #endif // SHARE_VM_PRIMS_METHODHANDLES_HPP