jdk8-mips64-public/hotspot: src/cpu/sparc/vm/interpreter

src/cpu/sparc/vm/interpreter_sparc.cpp@c640000b7cc1 (annotated)

src/cpu/sparc/vm/interpreter_sparc.cpp

Thu, 29 Apr 2010 06:30:25 -0700

author: twisti
date: Thu, 29 Apr 2010 06:30:25 -0700
changeset 1858: c640000b7cc1
parent 1609: ddb7834449d0
child 1907: c18cbe5936b8
permissions: -rw-r--r--

6829193: JSR 292 needs to support SPARC
Summary: There are unimplemented portions of the hotspot code for method handles and invokedynamic specific to SPARC.
Reviewed-by: kvn, never, jrose

 /*
  * Copyright 1997-2010 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  * CA 95054 USA or visit www.sun.com if you need additional information or
  * have any questions.
  *
  */
 #include "incls/_precompiled.incl"
 #include "incls/_interpreter_sparc.cpp.incl"
 // Generation of Interpreter
 //
 // The InterpreterGenerator generates the interpreter into Interpreter::_code.
 #define __ _masm->
 //----------------------------------------------------------------------------------------------------
 int AbstractInterpreter::BasicType_as_index(BasicType type) {
   int i = 0;
   switch (type) {
     case T_BOOLEAN: i = 0; break;
     case T_CHAR   : i = 1; break;
     case T_BYTE   : i = 2; break;
     case T_SHORT  : i = 3; break;
     case T_INT    : i = 4; break;
     case T_LONG   : i = 5; break;
     case T_VOID   : i = 6; break;
     case T_FLOAT  : i = 7; break;
     case T_DOUBLE : i = 8; break;
     case T_OBJECT : i = 9; break;
     case T_ARRAY  : i = 9; break;
     default       : ShouldNotReachHere();
   }
   assert(0 <= i && i < AbstractInterpreter::number_of_result_handlers, "index out of bounds");
   return i;
 }
 #ifndef _LP64
 address AbstractInterpreterGenerator::generate_slow_signature_handler() {
   address entry = __ pc();
   Argument argv(0, true);
   // We are in the jni transition frame. Save the last_java_frame corresponding to the
   // outer interpreter frame
   //
   __ set_last_Java_frame(FP, noreg);
   // make sure the interpreter frame we've pushed has a valid return pc
   __ mov(O7, I7);
   __ mov(Lmethod, G3_scratch);
   __ mov(Llocals, G4_scratch);
   __ save_frame(0);
   __ mov(G2_thread, L7_thread_cache);
   __ add(argv.address_in_frame(), O3);
   __ mov(G2_thread, O0);
   __ mov(G3_scratch, O1);
   __ call(CAST_FROM_FN_PTR(address, InterpreterRuntime::slow_signature_handler), relocInfo::runtime_call_type);
   __ delayed()->mov(G4_scratch, O2);
   __ mov(L7_thread_cache, G2_thread);
   __ reset_last_Java_frame();
   // load the register arguments (the C code packed them as varargs)
   for (Argument ldarg = argv.successor(); ldarg.is_register(); ldarg = ldarg.successor()) {
       __ ld_ptr(ldarg.address_in_frame(), ldarg.as_register());
   }
   __ ret();
   __ delayed()->
      restore(O0, 0, Lscratch);  // caller's Lscratch gets the result handler
   return entry;
 }
 #else
 // LP64 passes floating point arguments in F1, F3, F5, etc. instead of
 // O0, O1, O2 etc..
 // Doubles are passed in D0, D2, D4
 // We store the signature of the first 16 arguments in the first argument
 // slot because it will be overwritten prior to calling the native
 // function, with the pointer to the JNIEnv.
 // If LP64 there can be up to 16 floating point arguments in registers
 // or 6 integer registers.
 address AbstractInterpreterGenerator::generate_slow_signature_handler() {
   enum {
     non_float  = 0,
     float_sig  = 1,
     double_sig = 2,
     sig_mask   = 3
   };
   address entry = __ pc();
   Argument argv(0, true);
   // We are in the jni transition frame. Save the last_java_frame corresponding to the
   // outer interpreter frame
   //
   __ set_last_Java_frame(FP, noreg);
   // make sure the interpreter frame we've pushed has a valid return pc
   __ mov(O7, I7);
   __ mov(Lmethod, G3_scratch);
   __ mov(Llocals, G4_scratch);
   __ save_frame(0);
   __ mov(G2_thread, L7_thread_cache);
   __ add(argv.address_in_frame(), O3);
   __ mov(G2_thread, O0);
   __ mov(G3_scratch, O1);
   __ call(CAST_FROM_FN_PTR(address, InterpreterRuntime::slow_signature_handler), relocInfo::runtime_call_type);
   __ delayed()->mov(G4_scratch, O2);
   __ mov(L7_thread_cache, G2_thread);
   __ reset_last_Java_frame();
   // load the register arguments (the C code packed them as varargs)
   Address Sig = argv.address_in_frame();        // Argument 0 holds the signature
   __ ld_ptr( Sig, G3_scratch );                   // Get register argument signature word into G3_scratch
   __ mov( G3_scratch, G4_scratch);
   __ srl( G4_scratch, 2, G4_scratch);             // Skip Arg 0
   Label done;
   for (Argument ldarg = argv.successor(); ldarg.is_float_register(); ldarg = ldarg.successor()) {
     Label NonFloatArg;
     Label LoadFloatArg;
     Label LoadDoubleArg;
     Label NextArg;
     Address a = ldarg.address_in_frame();
     __ andcc(G4_scratch, sig_mask, G3_scratch);
     __ br(Assembler::zero, false, Assembler::pt, NonFloatArg);
     __ delayed()->nop();
     __ cmp(G3_scratch, float_sig );
     __ br(Assembler::equal, false, Assembler::pt, LoadFloatArg);
     __ delayed()->nop();
     __ cmp(G3_scratch, double_sig );
     __ br(Assembler::equal, false, Assembler::pt, LoadDoubleArg);
     __ delayed()->nop();
     __ bind(NonFloatArg);
     // There are only 6 integer register arguments!
     if ( ldarg.is_register() )
       __ ld_ptr(ldarg.address_in_frame(), ldarg.as_register());
     else {
     // Optimization, see if there are any more args and get out prior to checking
     // all 16 float registers.  My guess is that this is rare.
     // If is_register is false, then we are done the first six integer args.
       __ tst(G4_scratch);
       __ brx(Assembler::zero, false, Assembler::pt, done);
       __ delayed()->nop();
     }
     __ ba(false, NextArg);
     __ delayed()->srl( G4_scratch, 2, G4_scratch );
     __ bind(LoadFloatArg);
     __ ldf( FloatRegisterImpl::S, a, ldarg.as_float_register(), 4);
     __ ba(false, NextArg);
     __ delayed()->srl( G4_scratch, 2, G4_scratch );
     __ bind(LoadDoubleArg);
     __ ldf( FloatRegisterImpl::D, a, ldarg.as_double_register() );
     __ ba(false, NextArg);
     __ delayed()->srl( G4_scratch, 2, G4_scratch );
     __ bind(NextArg);
   }
   __ bind(done);
   __ ret();
   __ delayed()->
      restore(O0, 0, Lscratch);  // caller's Lscratch gets the result handler
   return entry;
 }
 #endif
 void InterpreterGenerator::generate_counter_overflow(Label& Lcontinue) {
   // Generate code to initiate compilation on the counter overflow.
   // InterpreterRuntime::frequency_counter_overflow takes two arguments,
   // the first indicates if the counter overflow occurs at a backwards branch (NULL bcp)
   // and the second is only used when the first is true.  We pass zero for both.
   // The call returns the address of the verified entry point for the method or NULL
   // if the compilation did not complete (either went background or bailed out).
   __ set((int)false, O2);
   __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::frequency_counter_overflow), O2, O2, true);
   // returns verified_entry_point or NULL
   // we ignore it in any case
   __ ba(false, Lcontinue);
   __ delayed()->nop();
 }
 // End of helpers
 // Various method entries
 // Abstract method entry
 // Attempt to execute abstract method. Throw exception
 //
 address InterpreterGenerator::generate_abstract_entry(void) {
   address entry = __ pc();
   // abstract method entry
   // throw exception
   __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_AbstractMethodError));
   // the call_VM checks for exception, so we should never return here.
   __ should_not_reach_here();
   return entry;
 }
 // Method handle invoker
 // Dispatch a method of the form java.dyn.MethodHandles::invoke(...)
 address InterpreterGenerator::generate_method_handle_entry(void) {
   if (!EnableMethodHandles) {
     return generate_abstract_entry();
   }
   return MethodHandles::generate_method_handle_interpreter_entry(_masm);
 }
 //----------------------------------------------------------------------------------------------------
 // Entry points & stack frame layout
 //
 // Here we generate the various kind of entries into the interpreter.
 // The two main entry type are generic bytecode methods and native call method.
 // These both come in synchronized and non-synchronized versions but the
 // frame layout they create is very similar. The other method entry
 // types are really just special purpose entries that are really entry
 // and interpretation all in one. These are for trivial methods like
 // accessor, empty, or special math methods.
 //
 // When control flow reaches any of the entry types for the interpreter
 // the following holds ->
 //
 // C2 Calling Conventions:
 //
 // The entry code below assumes that the following registers are set
 // when coming in:
 //    G5_method: holds the methodOop of the method to call
 //    Lesp:    points to the TOS of the callers expression stack
 //             after having pushed all the parameters
 //
 // The entry code does the following to setup an interpreter frame
 //   pop parameters from the callers stack by adjusting Lesp
 //   set O0 to Lesp
 //   compute X = (max_locals - num_parameters)
 //   bump SP up by X to accomadate the extra locals
 //   compute X = max_expression_stack
 //               + vm_local_words
 //               + 16 words of register save area
 //   save frame doing a save sp, -X, sp growing towards lower addresses
 //   set Lbcp, Lmethod, LcpoolCache
 //   set Llocals to i0
 //   set Lmonitors to FP - rounded_vm_local_words
 //   set Lesp to Lmonitors - 4
 //
 //  The frame has now been setup to do the rest of the entry code
 // Try this optimization:  Most method entries could live in a
 // "one size fits all" stack frame without all the dynamic size
 // calculations.  It might be profitable to do all this calculation
 // statically and approximately for "small enough" methods.
 //-----------------------------------------------------------------------------------------------
 // C1 Calling conventions
 //
 // Upon method entry, the following registers are setup:
 //
 // g2 G2_thread: current thread
 // g5 G5_method: method to activate
 // g4 Gargs  : pointer to last argument
 //
 //
 // Stack:
 //
 // +---------------+ <--- sp
 // |               |
 // : reg save area :
 // |               |
 // +---------------+ <--- sp + 0x40
 // |               |
 // : extra 7 slots :      note: these slots are not really needed for the interpreter (fix later)
 // |               |
 // +---------------+ <--- sp + 0x5c
 // |               |
 // :     free      :
 // |               |
 // +---------------+ <--- Gargs
 // |               |
 // :   arguments   :
 // |               |
 // +---------------+
 // |               |
 //
 //
 //
 // AFTER FRAME HAS BEEN SETUP for method interpretation the stack looks like:
 //
 // +---------------+ <--- sp
 // |               |
 // : reg save area :
 // |               |
 // +---------------+ <--- sp + 0x40
 // |               |
 // : extra 7 slots :      note: these slots are not really needed for the interpreter (fix later)
 // |               |
 // +---------------+ <--- sp + 0x5c
 // |               |
 // :               :
 // |               | <--- Lesp
 // +---------------+ <--- Lmonitors (fp - 0x18)
 // |   VM locals   |
 // +---------------+ <--- fp
 // |               |
 // : reg save area :
 // |               |
 // +---------------+ <--- fp + 0x40
 // |               |
 // : extra 7 slots :      note: these slots are not really needed for the interpreter (fix later)
 // |               |
 // +---------------+ <--- fp + 0x5c
 // |               |
 // :     free      :
 // |               |
 // +---------------+
 // |               |
 // : nonarg locals :
 // |               |
 // +---------------+
 // |               |
 // :   arguments   :
 // |               | <--- Llocals
 // +---------------+ <--- Gargs
 // |               |
 address AbstractInterpreterGenerator::generate_method_entry(AbstractInterpreter::MethodKind kind) {
   // determine code generation flags
   bool synchronized = false;
   address entry_point = NULL;
   switch (kind) {
     case Interpreter::zerolocals             :                                                                             break;
     case Interpreter::zerolocals_synchronized: synchronized = true;                                                        break;
     case Interpreter::native                 : entry_point = ((InterpreterGenerator*)this)->generate_native_entry(false);  break;
     case Interpreter::native_synchronized    : entry_point = ((InterpreterGenerator*)this)->generate_native_entry(true);   break;
     case Interpreter::empty                  : entry_point = ((InterpreterGenerator*)this)->generate_empty_entry();        break;
     case Interpreter::accessor               : entry_point = ((InterpreterGenerator*)this)->generate_accessor_entry();     break;
     case Interpreter::abstract               : entry_point = ((InterpreterGenerator*)this)->generate_abstract_entry();     break;
     case Interpreter::method_handle          : entry_point = ((InterpreterGenerator*)this)->generate_method_handle_entry(); break;
     case Interpreter::java_lang_math_sin     :                                                                             break;
     case Interpreter::java_lang_math_cos     :                                                                             break;
     case Interpreter::java_lang_math_tan     :                                                                             break;
     case Interpreter::java_lang_math_sqrt    :                                                                             break;
     case Interpreter::java_lang_math_abs     :                                                                             break;
     case Interpreter::java_lang_math_log     :                                                                             break;
     case Interpreter::java_lang_math_log10   :                                                                             break;
     default                                  : ShouldNotReachHere();                                                       break;
   }
   if (entry_point) return entry_point;
   return ((InterpreterGenerator*)this)->generate_normal_entry(synchronized);
 }
 bool AbstractInterpreter::can_be_compiled(methodHandle m) {
   // No special entry points that preclude compilation
   return true;
 }
 // This method tells the deoptimizer how big an interpreted frame must be:
 int AbstractInterpreter::size_activation(methodOop method,
                                          int tempcount,
                                          int popframe_extra_args,
                                          int moncount,
                                          int callee_param_count,
                                          int callee_locals,
                                          bool is_top_frame) {
   return layout_activation(method,
                            tempcount,
                            popframe_extra_args,
                            moncount,
                            callee_param_count,
                            callee_locals,
                            (frame*)NULL,
                            (frame*)NULL,
                            is_top_frame);
 }
 void Deoptimization::unwind_callee_save_values(frame* f, vframeArray* vframe_array) {
   // This code is sort of the equivalent of C2IAdapter::setup_stack_frame back in
   // the days we had adapter frames. When we deoptimize a situation where a
   // compiled caller calls a compiled caller will have registers it expects
   // to survive the call to the callee. If we deoptimize the callee the only
   // way we can restore these registers is to have the oldest interpreter
   // frame that we create restore these values. That is what this routine
   // will accomplish.
   // At the moment we have modified c2 to not have any callee save registers
   // so this problem does not exist and this routine is just a place holder.
   assert(f->is_interpreted_frame(), "must be interpreted");
 }
 //----------------------------------------------------------------------------------------------------
 // Exceptions

Mercurial > jdk8-mips64-public > hotspot / annotate

src/cpu/sparc/vm/interpreter_sparc.cpp@c640000b7cc1 (annotated)

src/cpu/sparc/vm/interpreter_sparc.cpp