hotspot/src/cpu/sparc/vm/cppInterpreter_sparc.cpp
author twisti
Fri, 13 Feb 2009 09:09:35 -0800
changeset 2031 24e034f56dcb
parent 670 ddf3e9583f2f
child 2534 08dac9ce0cd7
permissions -rw-r--r--
6800154: Add comments to long_by_long_mulhi() for better understandability Summary: This patch adds a comment pointing to the Hacker's Delight version of the algorithm plus a verbatim copy of it. Furthermore it adds inline comments. Reviewed-by: kvn, jrose
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/*
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 * Copyright 2007-2008 Sun Microsystems, Inc.  All Rights Reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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 * CA 95054 USA or visit www.sun.com if you need additional information or
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 * have any questions.
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 *
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 */
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#include "incls/_precompiled.incl"
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#include "incls/_cppInterpreter_sparc.cpp.incl"
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#ifdef CC_INTERP
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// Routine exists to make tracebacks look decent in debugger
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// while "shadow" interpreter frames are on stack. It is also
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// used to distinguish interpreter frames.
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extern "C" void RecursiveInterpreterActivation(interpreterState istate) {
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  ShouldNotReachHere();
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}
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bool CppInterpreter::contains(address pc) {
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  return ( _code->contains(pc) ||
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         ( pc == (CAST_FROM_FN_PTR(address, RecursiveInterpreterActivation) + frame::pc_return_offset)));
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}
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#define STATE(field_name) Lstate, in_bytes(byte_offset_of(BytecodeInterpreter, field_name))
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#define __ _masm->
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Label frame_manager_entry;
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Label fast_accessor_slow_entry_path;  // fast accessor methods need to be able to jmp to unsynchronized
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                                      // c++ interpreter entry point this holds that entry point label.
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static address unctrap_frame_manager_entry  = NULL;
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static address interpreter_return_address  = NULL;
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static address deopt_frame_manager_return_atos  = NULL;
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static address deopt_frame_manager_return_btos  = NULL;
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static address deopt_frame_manager_return_itos  = NULL;
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static address deopt_frame_manager_return_ltos  = NULL;
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static address deopt_frame_manager_return_ftos  = NULL;
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static address deopt_frame_manager_return_dtos  = NULL;
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static address deopt_frame_manager_return_vtos  = NULL;
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const Register prevState = G1_scratch;
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void InterpreterGenerator::save_native_result(void) {
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  // result potentially in O0/O1: save it across calls
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  __ stf(FloatRegisterImpl::D, F0, STATE(_native_fresult));
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#ifdef _LP64
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  __ stx(O0, STATE(_native_lresult));
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#else
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  __ std(O0, STATE(_native_lresult));
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#endif
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}
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void InterpreterGenerator::restore_native_result(void) {
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  // Restore any method result value
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  __ ldf(FloatRegisterImpl::D, STATE(_native_fresult), F0);
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#ifdef _LP64
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  __ ldx(STATE(_native_lresult), O0);
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#else
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  __ ldd(STATE(_native_lresult), O0);
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#endif
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}
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// A result handler converts/unboxes a native call result into
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// a java interpreter/compiler result. The current frame is an
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// interpreter frame. The activation frame unwind code must be
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// consistent with that of TemplateTable::_return(...). In the
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// case of native methods, the caller's SP was not modified.
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address CppInterpreterGenerator::generate_result_handler_for(BasicType type) {
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  address entry = __ pc();
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  Register Itos_i  = Otos_i ->after_save();
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  Register Itos_l  = Otos_l ->after_save();
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  Register Itos_l1 = Otos_l1->after_save();
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  Register Itos_l2 = Otos_l2->after_save();
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  switch (type) {
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    case T_BOOLEAN: __ subcc(G0, O0, G0); __ addc(G0, 0, Itos_i); break; // !0 => true; 0 => false
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    case T_CHAR   : __ sll(O0, 16, O0); __ srl(O0, 16, Itos_i);   break; // cannot use and3, 0xFFFF too big as immediate value!
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    case T_BYTE   : __ sll(O0, 24, O0); __ sra(O0, 24, Itos_i);   break;
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    case T_SHORT  : __ sll(O0, 16, O0); __ sra(O0, 16, Itos_i);   break;
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    case T_LONG   :
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#ifndef _LP64
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                    __ mov(O1, Itos_l2);  // move other half of long
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#endif              // ifdef or no ifdef, fall through to the T_INT case
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    case T_INT    : __ mov(O0, Itos_i);                         break;
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    case T_VOID   : /* nothing to do */                         break;
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    case T_FLOAT  : assert(F0 == Ftos_f, "fix this code" );     break;
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    case T_DOUBLE : assert(F0 == Ftos_d, "fix this code" );     break;
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    case T_OBJECT :
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      __ ld_ptr(STATE(_oop_temp), Itos_i);
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      __ verify_oop(Itos_i);
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      break;
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    default       : ShouldNotReachHere();
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  }
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  __ ret();                           // return from interpreter activation
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  __ delayed()->restore(I5_savedSP, G0, SP);  // remove interpreter frame
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  NOT_PRODUCT(__ emit_long(0);)       // marker for disassembly
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  return entry;
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}
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// tosca based result to c++ interpreter stack based result.
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// Result goes to address in L1_scratch
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address CppInterpreterGenerator::generate_tosca_to_stack_converter(BasicType type) {
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  // A result is in the native abi result register from a native method call.
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  // We need to return this result to the interpreter by pushing the result on the interpreter's
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  // stack. This is relatively simple the destination is in L1_scratch
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  // i.e. L1_scratch is the first free element on the stack. If we "push" a return value we must
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  // adjust L1_scratch
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  address entry = __ pc();
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  switch (type) {
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    case T_BOOLEAN:
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      // !0 => true; 0 => false
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      __ subcc(G0, O0, G0);
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      __ addc(G0, 0, O0);
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      __ st(O0, L1_scratch, 0);
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      __ sub(L1_scratch, wordSize, L1_scratch);
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      break;
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    // cannot use and3, 0xFFFF too big as immediate value!
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    case T_CHAR   :
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      __ sll(O0, 16, O0);
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      __ srl(O0, 16, O0);
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      __ st(O0, L1_scratch, 0);
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      __ sub(L1_scratch, wordSize, L1_scratch);
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      break;
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    case T_BYTE   :
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      __ sll(O0, 24, O0);
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      __ sra(O0, 24, O0);
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      __ st(O0, L1_scratch, 0);
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      __ sub(L1_scratch, wordSize, L1_scratch);
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      break;
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    case T_SHORT  :
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      __ sll(O0, 16, O0);
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      __ sra(O0, 16, O0);
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      __ st(O0, L1_scratch, 0);
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      __ sub(L1_scratch, wordSize, L1_scratch);
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      break;
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    case T_LONG   :
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#ifndef _LP64
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#if defined(COMPILER2)
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  // All return values are where we want them, except for Longs.  C2 returns
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  // longs in G1 in the 32-bit build whereas the interpreter wants them in O0/O1.
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  // Since the interpreter will return longs in G1 and O0/O1 in the 32bit
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  // build even if we are returning from interpreted we just do a little
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  // stupid shuffing.
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  // Note: I tried to make c2 return longs in O0/O1 and G1 so we wouldn't have to
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  // do this here. Unfortunately if we did a rethrow we'd see an machepilog node
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  // first which would move g1 -> O0/O1 and destroy the exception we were throwing.
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      __ stx(G1, L1_scratch, -wordSize);
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#else
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      // native result is in O0, O1
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      __ st(O1, L1_scratch, 0);                      // Low order
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      __ st(O0, L1_scratch, -wordSize);              // High order
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#endif /* COMPILER2 */
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#else
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      __ stx(O0, L1_scratch, -wordSize);
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#endif
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      __ sub(L1_scratch, 2*wordSize, L1_scratch);
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      break;
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    case T_INT    :
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      __ st(O0, L1_scratch, 0);
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      __ sub(L1_scratch, wordSize, L1_scratch);
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      break;
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   187
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    case T_VOID   : /* nothing to do */
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      break;
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   190
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   191
    case T_FLOAT  :
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      __ stf(FloatRegisterImpl::S, F0, L1_scratch, 0);
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      __ sub(L1_scratch, wordSize, L1_scratch);
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      break;
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   195
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   196
    case T_DOUBLE :
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      // Every stack slot is aligned on 64 bit, However is this
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      // the correct stack slot on 64bit?? QQQ
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      __ stf(FloatRegisterImpl::D, F0, L1_scratch, -wordSize);
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      __ sub(L1_scratch, 2*wordSize, L1_scratch);
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      break;
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   202
    case T_OBJECT :
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      __ verify_oop(O0);
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      __ st_ptr(O0, L1_scratch, 0);
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      __ sub(L1_scratch, wordSize, L1_scratch);
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      break;
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    default       : ShouldNotReachHere();
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  }
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  __ retl();                          // return from interpreter activation
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  __ delayed()->nop();                // schedule this better
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  NOT_PRODUCT(__ emit_long(0);)       // marker for disassembly
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  return entry;
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}
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   214
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address CppInterpreterGenerator::generate_stack_to_stack_converter(BasicType type) {
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  // A result is in the java expression stack of the interpreted method that has just
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  // returned. Place this result on the java expression stack of the caller.
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  //
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  // The current interpreter activation in Lstate is for the method just returning its
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  // result. So we know that the result of this method is on the top of the current
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  // execution stack (which is pre-pushed) and will be return to the top of the caller
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  // stack. The top of the callers stack is the bottom of the locals of the current
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  // activation.
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  // Because of the way activation are managed by the frame manager the value of esp is
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  // below both the stack top of the current activation and naturally the stack top
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  // of the calling activation. This enable this routine to leave the return address
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  // to the frame manager on the stack and do a vanilla return.
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  //
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  // On entry: O0 - points to source (callee stack top)
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  //           O1 - points to destination (caller stack top [i.e. free location])
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  // destroys O2, O3
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  //
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   233
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  address entry = __ pc();
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  switch (type) {
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   236
    case T_VOID:  break;
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      break;
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   238
    case T_FLOAT  :
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   239
    case T_BOOLEAN:
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   240
    case T_CHAR   :
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   241
    case T_BYTE   :
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   242
    case T_SHORT  :
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   243
    case T_INT    :
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      // 1 word result
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      __ ld(O0, 0, O2);
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      __ st(O2, O1, 0);
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      __ sub(O1, wordSize, O1);
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      break;
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   249
    case T_DOUBLE  :
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   250
    case T_LONG    :
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      // return top two words on current expression stack to caller's expression stack
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      // The caller's expression stack is adjacent to the current frame manager's intepretState
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      // except we allocated one extra word for this intepretState so we won't overwrite it
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      // when we return a two word result.
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   255
#ifdef _LP64
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      __ ld_ptr(O0, 0, O2);
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      __ st_ptr(O2, O1, -wordSize);
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   258
#else
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      __ ld(O0, 0, O2);
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      __ ld(O0, wordSize, O3);
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   261
      __ st(O3, O1, 0);
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   262
      __ st(O2, O1, -wordSize);
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   263
#endif
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   264
      __ sub(O1, 2*wordSize, O1);
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   265
      break;
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   266
    case T_OBJECT :
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   267
      __ ld_ptr(O0, 0, O2);
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   268
      __ verify_oop(O2);                                               // verify it
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   269
      __ st_ptr(O2, O1, 0);
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   270
      __ sub(O1, wordSize, O1);
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   271
      break;
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   272
    default       : ShouldNotReachHere();
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   273
  }
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  __ retl();
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  __ delayed()->nop(); // QQ schedule this better
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   276
  return entry;
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   277
}
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   278
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   279
address CppInterpreterGenerator::generate_stack_to_native_abi_converter(BasicType type) {
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  // A result is in the java expression stack of the interpreted method that has just
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   281
  // returned. Place this result in the native abi that the caller expects.
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   282
  // We are in a new frame registers we set must be in caller (i.e. callstub) frame.
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   283
  //
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   284
  // Similar to generate_stack_to_stack_converter above. Called at a similar time from the
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   285
  // frame manager execept in this situation the caller is native code (c1/c2/call_stub)
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   286
  // and so rather than return result onto caller's java expression stack we return the
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   287
  // result in the expected location based on the native abi.
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   288
  // On entry: O0 - source (stack top)
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   289
  // On exit result in expected output register
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   290
  // QQQ schedule this better
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   291
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   292
  address entry = __ pc();
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   293
  switch (type) {
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   294
    case T_VOID:  break;
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   295
      break;
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   296
    case T_FLOAT  :
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   297
      __ ldf(FloatRegisterImpl::S, O0, 0, F0);
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   298
      break;
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   299
    case T_BOOLEAN:
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   300
    case T_CHAR   :
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   301
    case T_BYTE   :
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   302
    case T_SHORT  :
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   303
    case T_INT    :
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   304
      // 1 word result
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   305
      __ ld(O0, 0, O0->after_save());
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   306
      break;
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   307
    case T_DOUBLE  :
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   308
      __ ldf(FloatRegisterImpl::D, O0, 0, F0);
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   309
      break;
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   310
    case T_LONG    :
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   311
      // return top two words on current expression stack to caller's expression stack
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   312
      // The caller's expression stack is adjacent to the current frame manager's interpretState
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   313
      // except we allocated one extra word for this intepretState so we won't overwrite it
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   314
      // when we return a two word result.
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   315
#ifdef _LP64
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   316
      __ ld_ptr(O0, 0, O0->after_save());
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   317
#else
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   318
      __ ld(O0, wordSize, O1->after_save());
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   319
      __ ld(O0, 0, O0->after_save());
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   320
#endif
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   321
#if defined(COMPILER2) && !defined(_LP64)
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   322
      // C2 expects long results in G1 we can't tell if we're returning to interpreted
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   323
      // or compiled so just be safe use G1 and O0/O1
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   324
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   325
      // Shift bits into high (msb) of G1
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   326
      __ sllx(Otos_l1->after_save(), 32, G1);
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   327
      // Zero extend low bits
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   328
      __ srl (Otos_l2->after_save(), 0, Otos_l2->after_save());
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   329
      __ or3 (Otos_l2->after_save(), G1, G1);
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   330
#endif /* COMPILER2 */
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   331
      break;
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   332
    case T_OBJECT :
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   333
      __ ld_ptr(O0, 0, O0->after_save());
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   334
      __ verify_oop(O0->after_save());                                               // verify it
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   335
      break;
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   336
    default       : ShouldNotReachHere();
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   337
  }
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   338
  __ retl();
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   339
  __ delayed()->nop();
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   340
  return entry;
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   341
}
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   342
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   343
address CppInterpreter::return_entry(TosState state, int length) {
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   344
  // make it look good in the debugger
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   345
  return CAST_FROM_FN_PTR(address, RecursiveInterpreterActivation) + frame::pc_return_offset;
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   346
}
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   347
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   348
address CppInterpreter::deopt_entry(TosState state, int length) {
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   349
  address ret = NULL;
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   350
  if (length != 0) {
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   351
    switch (state) {
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   352
      case atos: ret = deopt_frame_manager_return_atos; break;
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   353
      case btos: ret = deopt_frame_manager_return_btos; break;
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   354
      case ctos:
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   355
      case stos:
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   356
      case itos: ret = deopt_frame_manager_return_itos; break;
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   357
      case ltos: ret = deopt_frame_manager_return_ltos; break;
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   358
      case ftos: ret = deopt_frame_manager_return_ftos; break;
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   359
      case dtos: ret = deopt_frame_manager_return_dtos; break;
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   360
      case vtos: ret = deopt_frame_manager_return_vtos; break;
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   361
    }
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   362
  } else {
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   363
    ret = unctrap_frame_manager_entry;  // re-execute the bytecode ( e.g. uncommon trap)
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   364
  }
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   365
  assert(ret != NULL, "Not initialized");
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   366
  return ret;
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   367
}
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   368
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   369
//
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   370
// Helpers for commoning out cases in the various type of method entries.
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   371
//
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   372
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   373
// increment invocation count & check for overflow
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   374
//
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   375
// Note: checking for negative value instead of overflow
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   376
//       so we have a 'sticky' overflow test
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   377
//
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   378
// Lmethod: method
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   379
// ??: invocation counter
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   380
//
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   381
void InterpreterGenerator::generate_counter_incr(Label* overflow, Label* profile_method, Label* profile_method_continue) {
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   382
  // Update standard invocation counters
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   383
  __ increment_invocation_counter(O0, G3_scratch);
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diff changeset
   384
  if (ProfileInterpreter) {  // %%% Merge this into methodDataOop
489c9b5090e2 Initial load
duke
parents:
diff changeset
   385
    __ ld_ptr(STATE(_method), G3_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   386
    Address interpreter_invocation_counter(G3_scratch, 0, in_bytes(methodOopDesc::interpreter_invocation_counter_offset()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   387
    __ ld(interpreter_invocation_counter, G3_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   388
    __ inc(G3_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   389
    __ st(G3_scratch, interpreter_invocation_counter);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   390
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   391
489c9b5090e2 Initial load
duke
parents:
diff changeset
   392
  Address invocation_limit(G3_scratch, (address)&InvocationCounter::InterpreterInvocationLimit);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   393
  __ sethi(invocation_limit);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   394
  __ ld(invocation_limit, G3_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   395
  __ cmp(O0, G3_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   396
  __ br(Assembler::greaterEqualUnsigned, false, Assembler::pn, *overflow);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   397
  __ delayed()->nop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   398
489c9b5090e2 Initial load
duke
parents:
diff changeset
   399
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   400
489c9b5090e2 Initial load
duke
parents:
diff changeset
   401
address InterpreterGenerator::generate_empty_entry(void) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   402
489c9b5090e2 Initial load
duke
parents:
diff changeset
   403
  // A method that does nothing but return...
489c9b5090e2 Initial load
duke
parents:
diff changeset
   404
489c9b5090e2 Initial load
duke
parents:
diff changeset
   405
  address entry = __ pc();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   406
  Label slow_path;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   407
489c9b5090e2 Initial load
duke
parents:
diff changeset
   408
  __ verify_oop(G5_method);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   409
489c9b5090e2 Initial load
duke
parents:
diff changeset
   410
  // do nothing for empty methods (do not even increment invocation counter)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   411
  if ( UseFastEmptyMethods) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   412
    // If we need a safepoint check, generate full interpreter entry.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   413
    Address sync_state(G3_scratch, SafepointSynchronize::address_of_state());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   414
    __ load_contents(sync_state, G3_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   415
    __ cmp(G3_scratch, SafepointSynchronize::_not_synchronized);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   416
    __ br(Assembler::notEqual, false, Assembler::pn, frame_manager_entry);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   417
    __ delayed()->nop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   418
489c9b5090e2 Initial load
duke
parents:
diff changeset
   419
    // Code: _return
489c9b5090e2 Initial load
duke
parents:
diff changeset
   420
    __ retl();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   421
    __ delayed()->mov(O5_savedSP, SP);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   422
    return entry;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   423
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   424
  return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   425
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   426
489c9b5090e2 Initial load
duke
parents:
diff changeset
   427
// Call an accessor method (assuming it is resolved, otherwise drop into
489c9b5090e2 Initial load
duke
parents:
diff changeset
   428
// vanilla (slow path) entry
489c9b5090e2 Initial load
duke
parents:
diff changeset
   429
489c9b5090e2 Initial load
duke
parents:
diff changeset
   430
// Generates code to elide accessor methods
489c9b5090e2 Initial load
duke
parents:
diff changeset
   431
// Uses G3_scratch and G1_scratch as scratch
489c9b5090e2 Initial load
duke
parents:
diff changeset
   432
address InterpreterGenerator::generate_accessor_entry(void) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   433
489c9b5090e2 Initial load
duke
parents:
diff changeset
   434
  // Code: _aload_0, _(i|a)getfield, _(i|a)return or any rewrites thereof;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   435
  // parameter size = 1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   436
  // Note: We can only use this code if the getfield has been resolved
489c9b5090e2 Initial load
duke
parents:
diff changeset
   437
  //       and if we don't have a null-pointer exception => check for
489c9b5090e2 Initial load
duke
parents:
diff changeset
   438
  //       these conditions first and use slow path if necessary.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   439
  address entry = __ pc();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   440
  Label slow_path;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   441
489c9b5090e2 Initial load
duke
parents:
diff changeset
   442
  if ( UseFastAccessorMethods) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   443
    // Check if we need to reach a safepoint and generate full interpreter
489c9b5090e2 Initial load
duke
parents:
diff changeset
   444
    // frame if so.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   445
    Address sync_state(G3_scratch, SafepointSynchronize::address_of_state());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   446
    __ load_contents(sync_state, G3_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   447
    __ cmp(G3_scratch, SafepointSynchronize::_not_synchronized);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   448
    __ br(Assembler::notEqual, false, Assembler::pn, slow_path);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   449
    __ delayed()->nop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   450
489c9b5090e2 Initial load
duke
parents:
diff changeset
   451
    // Check if local 0 != NULL
489c9b5090e2 Initial load
duke
parents:
diff changeset
   452
    __ ld_ptr(Gargs, G0, Otos_i ); // get local 0
489c9b5090e2 Initial load
duke
parents:
diff changeset
   453
    __ tst(Otos_i);  // check if local 0 == NULL and go the slow path
489c9b5090e2 Initial load
duke
parents:
diff changeset
   454
    __ brx(Assembler::zero, false, Assembler::pn, slow_path);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   455
    __ delayed()->nop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   456
489c9b5090e2 Initial load
duke
parents:
diff changeset
   457
489c9b5090e2 Initial load
duke
parents:
diff changeset
   458
    // read first instruction word and extract bytecode @ 1 and index @ 2
489c9b5090e2 Initial load
duke
parents:
diff changeset
   459
    // get first 4 bytes of the bytecodes (big endian!)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   460
    __ ld_ptr(Address(G5_method, 0, in_bytes(methodOopDesc::const_offset())), G1_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   461
    __ ld(Address(G1_scratch, 0, in_bytes(constMethodOopDesc::codes_offset())), G1_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   462
489c9b5090e2 Initial load
duke
parents:
diff changeset
   463
    // move index @ 2 far left then to the right most two bytes.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   464
    __ sll(G1_scratch, 2*BitsPerByte, G1_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   465
    __ srl(G1_scratch, 2*BitsPerByte - exact_log2(in_words(
489c9b5090e2 Initial load
duke
parents:
diff changeset
   466
                      ConstantPoolCacheEntry::size()) * BytesPerWord), G1_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   467
489c9b5090e2 Initial load
duke
parents:
diff changeset
   468
    // get constant pool cache
489c9b5090e2 Initial load
duke
parents:
diff changeset
   469
    __ ld_ptr(G5_method, in_bytes(methodOopDesc::constants_offset()), G3_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   470
    __ ld_ptr(G3_scratch, constantPoolOopDesc::cache_offset_in_bytes(), G3_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   471
489c9b5090e2 Initial load
duke
parents:
diff changeset
   472
    // get specific constant pool cache entry
489c9b5090e2 Initial load
duke
parents:
diff changeset
   473
    __ add(G3_scratch, G1_scratch, G3_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   474
489c9b5090e2 Initial load
duke
parents:
diff changeset
   475
    // Check the constant Pool cache entry to see if it has been resolved.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   476
    // If not, need the slow path.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   477
    ByteSize cp_base_offset = constantPoolCacheOopDesc::base_offset();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   478
    __ ld_ptr(G3_scratch, in_bytes(cp_base_offset + ConstantPoolCacheEntry::indices_offset()), G1_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   479
    __ srl(G1_scratch, 2*BitsPerByte, G1_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   480
    __ and3(G1_scratch, 0xFF, G1_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   481
    __ cmp(G1_scratch, Bytecodes::_getfield);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   482
    __ br(Assembler::notEqual, false, Assembler::pn, slow_path);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   483
    __ delayed()->nop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   484
489c9b5090e2 Initial load
duke
parents:
diff changeset
   485
    // Get the type and return field offset from the constant pool cache
489c9b5090e2 Initial load
duke
parents:
diff changeset
   486
    __ ld_ptr(G3_scratch, in_bytes(cp_base_offset + ConstantPoolCacheEntry::flags_offset()), G1_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   487
    __ ld_ptr(G3_scratch, in_bytes(cp_base_offset + ConstantPoolCacheEntry::f2_offset()), G3_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   488
489c9b5090e2 Initial load
duke
parents:
diff changeset
   489
    Label xreturn_path;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   490
    // Need to differentiate between igetfield, agetfield, bgetfield etc.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   491
    // because they are different sizes.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   492
    // Get the type from the constant pool cache
489c9b5090e2 Initial load
duke
parents:
diff changeset
   493
    __ srl(G1_scratch, ConstantPoolCacheEntry::tosBits, G1_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   494
    // Make sure we don't need to mask G1_scratch for tosBits after the above shift
489c9b5090e2 Initial load
duke
parents:
diff changeset
   495
    ConstantPoolCacheEntry::verify_tosBits();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   496
    __ cmp(G1_scratch, atos );
489c9b5090e2 Initial load
duke
parents:
diff changeset
   497
    __ br(Assembler::equal, true, Assembler::pt, xreturn_path);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   498
    __ delayed()->ld_ptr(Otos_i, G3_scratch, Otos_i);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   499
    __ cmp(G1_scratch, itos);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   500
    __ br(Assembler::equal, true, Assembler::pt, xreturn_path);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   501
    __ delayed()->ld(Otos_i, G3_scratch, Otos_i);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   502
    __ cmp(G1_scratch, stos);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   503
    __ br(Assembler::equal, true, Assembler::pt, xreturn_path);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   504
    __ delayed()->ldsh(Otos_i, G3_scratch, Otos_i);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   505
    __ cmp(G1_scratch, ctos);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   506
    __ br(Assembler::equal, true, Assembler::pt, xreturn_path);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   507
    __ delayed()->lduh(Otos_i, G3_scratch, Otos_i);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   508
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   509
    __ cmp(G1_scratch, btos);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   510
    __ br(Assembler::equal, true, Assembler::pt, xreturn_path);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   511
    __ delayed()->ldsb(Otos_i, G3_scratch, Otos_i);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   512
    __ should_not_reach_here();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   513
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
   514
    __ ldsb(Otos_i, G3_scratch, Otos_i);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   515
    __ bind(xreturn_path);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   516
489c9b5090e2 Initial load
duke
parents:
diff changeset
   517
    // _ireturn/_areturn
489c9b5090e2 Initial load
duke
parents:
diff changeset
   518
    __ retl();                      // return from leaf routine
489c9b5090e2 Initial load
duke
parents:
diff changeset
   519
    __ delayed()->mov(O5_savedSP, SP);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   520
489c9b5090e2 Initial load
duke
parents:
diff changeset
   521
    // Generate regular method entry
489c9b5090e2 Initial load
duke
parents:
diff changeset
   522
    __ bind(slow_path);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   523
    __ ba(false, fast_accessor_slow_entry_path);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   524
    __ delayed()->nop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   525
    return entry;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   526
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   527
  return NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   528
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   529
489c9b5090e2 Initial load
duke
parents:
diff changeset
   530
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
   531
// Interpreter stub for calling a native method. (C++ interpreter)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   532
// This sets up a somewhat different looking stack for calling the native method
489c9b5090e2 Initial load
duke
parents:
diff changeset
   533
// than the typical interpreter frame setup.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   534
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
   535
489c9b5090e2 Initial load
duke
parents:
diff changeset
   536
address InterpreterGenerator::generate_native_entry(bool synchronized) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   537
  address entry = __ pc();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   538
489c9b5090e2 Initial load
duke
parents:
diff changeset
   539
  // the following temporary registers are used during frame creation
489c9b5090e2 Initial load
duke
parents:
diff changeset
   540
  const Register Gtmp1 = G3_scratch ;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   541
  const Register Gtmp2 = G1_scratch;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   542
  const Address size_of_parameters(G5_method, 0, in_bytes(methodOopDesc::size_of_parameters_offset()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   543
489c9b5090e2 Initial load
duke
parents:
diff changeset
   544
  bool inc_counter  = UseCompiler || CountCompiledCalls;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   545
489c9b5090e2 Initial load
duke
parents:
diff changeset
   546
  // make sure registers are different!
489c9b5090e2 Initial load
duke
parents:
diff changeset
   547
  assert_different_registers(G2_thread, G5_method, Gargs, Gtmp1, Gtmp2);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   548
489c9b5090e2 Initial load
duke
parents:
diff changeset
   549
  const Address access_flags      (G5_method, 0, in_bytes(methodOopDesc::access_flags_offset()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   550
489c9b5090e2 Initial load
duke
parents:
diff changeset
   551
  Label Lentry;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   552
  __ bind(Lentry);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   553
489c9b5090e2 Initial load
duke
parents:
diff changeset
   554
  __ verify_oop(G5_method);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   555
489c9b5090e2 Initial load
duke
parents:
diff changeset
   556
  const Register Glocals_size = G3;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   557
  assert_different_registers(Glocals_size, G4_scratch, Gframe_size);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   558
489c9b5090e2 Initial load
duke
parents:
diff changeset
   559
  // make sure method is native & not abstract
489c9b5090e2 Initial load
duke
parents:
diff changeset
   560
  // rethink these assertions - they can be simplified and shared (gri 2/25/2000)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   561
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   562
  __ ld(access_flags, Gtmp1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   563
  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   564
    Label L;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   565
    __ btst(JVM_ACC_NATIVE, Gtmp1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   566
    __ br(Assembler::notZero, false, Assembler::pt, L);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   567
    __ delayed()->nop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   568
    __ stop("tried to execute non-native method as native");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   569
    __ bind(L);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   570
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   571
  { Label L;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   572
    __ btst(JVM_ACC_ABSTRACT, Gtmp1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   573
    __ br(Assembler::zero, false, Assembler::pt, L);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   574
    __ delayed()->nop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   575
    __ stop("tried to execute abstract method as non-abstract");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   576
    __ bind(L);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   577
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   578
#endif // ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   579
489c9b5090e2 Initial load
duke
parents:
diff changeset
   580
  __ lduh(size_of_parameters, Gtmp1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   581
  __ sll(Gtmp1, LogBytesPerWord, Gtmp2);       // parameter size in bytes
489c9b5090e2 Initial load
duke
parents:
diff changeset
   582
  __ add(Gargs, Gtmp2, Gargs);                 // points to first local + BytesPerWord
489c9b5090e2 Initial load
duke
parents:
diff changeset
   583
  // NEW
489c9b5090e2 Initial load
duke
parents:
diff changeset
   584
  __ add(Gargs, -wordSize, Gargs);             // points to first local[0]
489c9b5090e2 Initial load
duke
parents:
diff changeset
   585
  // generate the code to allocate the interpreter stack frame
489c9b5090e2 Initial load
duke
parents:
diff changeset
   586
  // NEW FRAME ALLOCATED HERE
489c9b5090e2 Initial load
duke
parents:
diff changeset
   587
  // save callers original sp
489c9b5090e2 Initial load
duke
parents:
diff changeset
   588
  // __ mov(SP, I5_savedSP->after_restore());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   589
489c9b5090e2 Initial load
duke
parents:
diff changeset
   590
  generate_compute_interpreter_state(Lstate, G0, true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   591
489c9b5090e2 Initial load
duke
parents:
diff changeset
   592
  // At this point Lstate points to new interpreter state
489c9b5090e2 Initial load
duke
parents:
diff changeset
   593
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
   594
489c9b5090e2 Initial load
duke
parents:
diff changeset
   595
  const Address do_not_unlock_if_synchronized(G2_thread, 0,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   596
      in_bytes(JavaThread::do_not_unlock_if_synchronized_offset()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   597
  // Since at this point in the method invocation the exception handler
489c9b5090e2 Initial load
duke
parents:
diff changeset
   598
  // would try to exit the monitor of synchronized methods which hasn't
489c9b5090e2 Initial load
duke
parents:
diff changeset
   599
  // been entered yet, we set the thread local variable
489c9b5090e2 Initial load
duke
parents:
diff changeset
   600
  // _do_not_unlock_if_synchronized to true. If any exception was thrown by
489c9b5090e2 Initial load
duke
parents:
diff changeset
   601
  // runtime, exception handling i.e. unlock_if_synchronized_method will
489c9b5090e2 Initial load
duke
parents:
diff changeset
   602
  // check this thread local flag.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   603
  // This flag has two effects, one is to force an unwind in the topmost
489c9b5090e2 Initial load
duke
parents:
diff changeset
   604
  // interpreter frame and not perform an unlock while doing so.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   605
489c9b5090e2 Initial load
duke
parents:
diff changeset
   606
  __ movbool(true, G3_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   607
  __ stbool(G3_scratch, do_not_unlock_if_synchronized);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   608
489c9b5090e2 Initial load
duke
parents:
diff changeset
   609
489c9b5090e2 Initial load
duke
parents:
diff changeset
   610
  // increment invocation counter and check for overflow
489c9b5090e2 Initial load
duke
parents:
diff changeset
   611
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
   612
  // Note: checking for negative value instead of overflow
489c9b5090e2 Initial load
duke
parents:
diff changeset
   613
  //       so we have a 'sticky' overflow test (may be of
489c9b5090e2 Initial load
duke
parents:
diff changeset
   614
  //       importance as soon as we have true MT/MP)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   615
  Label invocation_counter_overflow;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   616
  if (inc_counter) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   617
    generate_counter_incr(&invocation_counter_overflow, NULL, NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   618
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   619
  Label Lcontinue;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   620
  __ bind(Lcontinue);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   621
489c9b5090e2 Initial load
duke
parents:
diff changeset
   622
  bang_stack_shadow_pages(true);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   623
  // reset the _do_not_unlock_if_synchronized flag
489c9b5090e2 Initial load
duke
parents:
diff changeset
   624
  __ stbool(G0, do_not_unlock_if_synchronized);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   625
489c9b5090e2 Initial load
duke
parents:
diff changeset
   626
  // check for synchronized methods
489c9b5090e2 Initial load
duke
parents:
diff changeset
   627
  // Must happen AFTER invocation_counter check, so method is not locked
489c9b5090e2 Initial load
duke
parents:
diff changeset
   628
  // if counter overflows.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   629
489c9b5090e2 Initial load
duke
parents:
diff changeset
   630
  if (synchronized) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   631
    lock_method();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   632
    // Don't see how G2_thread is preserved here...
489c9b5090e2 Initial load
duke
parents:
diff changeset
   633
    // __ verify_thread(); QQQ destroys L0,L1 can't use
489c9b5090e2 Initial load
duke
parents:
diff changeset
   634
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   635
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   636
    { Label ok;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   637
      __ ld_ptr(STATE(_method), G5_method);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   638
      __ ld(access_flags, O0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   639
      __ btst(JVM_ACC_SYNCHRONIZED, O0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   640
      __ br( Assembler::zero, false, Assembler::pt, ok);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   641
      __ delayed()->nop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   642
      __ stop("method needs synchronization");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   643
      __ bind(ok);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   644
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   645
#endif // ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   646
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   647
489c9b5090e2 Initial load
duke
parents:
diff changeset
   648
  // start execution
489c9b5090e2 Initial load
duke
parents:
diff changeset
   649
489c9b5090e2 Initial load
duke
parents:
diff changeset
   650
//   __ verify_thread(); kills L1,L2 can't  use at the moment
489c9b5090e2 Initial load
duke
parents:
diff changeset
   651
489c9b5090e2 Initial load
duke
parents:
diff changeset
   652
  // jvmti/jvmpi support
489c9b5090e2 Initial load
duke
parents:
diff changeset
   653
  __ notify_method_entry();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   654
489c9b5090e2 Initial load
duke
parents:
diff changeset
   655
  // native call
489c9b5090e2 Initial load
duke
parents:
diff changeset
   656
489c9b5090e2 Initial load
duke
parents:
diff changeset
   657
  // (note that O0 is never an oop--at most it is a handle)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   658
  // It is important not to smash any handles created by this call,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   659
  // until any oop handle in O0 is dereferenced.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   660
489c9b5090e2 Initial load
duke
parents:
diff changeset
   661
  // (note that the space for outgoing params is preallocated)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   662
489c9b5090e2 Initial load
duke
parents:
diff changeset
   663
  // get signature handler
489c9b5090e2 Initial load
duke
parents:
diff changeset
   664
489c9b5090e2 Initial load
duke
parents:
diff changeset
   665
  Label pending_exception_present;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   666
489c9b5090e2 Initial load
duke
parents:
diff changeset
   667
  { Label L;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   668
    __ ld_ptr(STATE(_method), G5_method);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   669
    __ ld_ptr(Address(G5_method, 0, in_bytes(methodOopDesc::signature_handler_offset())), G3_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   670
    __ tst(G3_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   671
    __ brx(Assembler::notZero, false, Assembler::pt, L);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   672
    __ delayed()->nop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   673
    __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::prepare_native_call), G5_method, false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   674
    __ ld_ptr(STATE(_method), G5_method);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   675
489c9b5090e2 Initial load
duke
parents:
diff changeset
   676
    Address exception_addr(G2_thread, 0, in_bytes(Thread::pending_exception_offset()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   677
    __ ld_ptr(exception_addr, G3_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   678
    __ br_notnull(G3_scratch, false, Assembler::pn, pending_exception_present);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   679
    __ delayed()->nop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   680
    __ ld_ptr(Address(G5_method, 0, in_bytes(methodOopDesc::signature_handler_offset())), G3_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   681
    __ bind(L);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   682
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   683
489c9b5090e2 Initial load
duke
parents:
diff changeset
   684
  // Push a new frame so that the args will really be stored in
489c9b5090e2 Initial load
duke
parents:
diff changeset
   685
  // Copy a few locals across so the new frame has the variables
489c9b5090e2 Initial load
duke
parents:
diff changeset
   686
  // we need but these values will be dead at the jni call and
489c9b5090e2 Initial load
duke
parents:
diff changeset
   687
  // therefore not gc volatile like the values in the current
489c9b5090e2 Initial load
duke
parents:
diff changeset
   688
  // frame (Lstate in particular)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   689
489c9b5090e2 Initial load
duke
parents:
diff changeset
   690
  // Flush the state pointer to the register save area
489c9b5090e2 Initial load
duke
parents:
diff changeset
   691
  // Which is the only register we need for a stack walk.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   692
  __ st_ptr(Lstate, SP, (Lstate->sp_offset_in_saved_window() * wordSize) + STACK_BIAS);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   693
489c9b5090e2 Initial load
duke
parents:
diff changeset
   694
  __ mov(Lstate, O1);         // Need to pass the state pointer across the frame
489c9b5090e2 Initial load
duke
parents:
diff changeset
   695
489c9b5090e2 Initial load
duke
parents:
diff changeset
   696
  // Calculate current frame size
489c9b5090e2 Initial load
duke
parents:
diff changeset
   697
  __ sub(SP, FP, O3);         // Calculate negative of current frame size
489c9b5090e2 Initial load
duke
parents:
diff changeset
   698
  __ save(SP, O3, SP);        // Allocate an identical sized frame
489c9b5090e2 Initial load
duke
parents:
diff changeset
   699
489c9b5090e2 Initial load
duke
parents:
diff changeset
   700
  __ mov(I1, Lstate);          // In the "natural" register.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   701
489c9b5090e2 Initial load
duke
parents:
diff changeset
   702
  // Note I7 has leftover trash. Slow signature handler will fill it in
489c9b5090e2 Initial load
duke
parents:
diff changeset
   703
  // should we get there. Normal jni call will set reasonable last_Java_pc
489c9b5090e2 Initial load
duke
parents:
diff changeset
   704
  // below (and fix I7 so the stack trace doesn't have a meaningless frame
489c9b5090e2 Initial load
duke
parents:
diff changeset
   705
  // in it).
489c9b5090e2 Initial load
duke
parents:
diff changeset
   706
489c9b5090e2 Initial load
duke
parents:
diff changeset
   707
489c9b5090e2 Initial load
duke
parents:
diff changeset
   708
  // call signature handler
489c9b5090e2 Initial load
duke
parents:
diff changeset
   709
  __ ld_ptr(STATE(_method), Lmethod);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   710
  __ ld_ptr(STATE(_locals), Llocals);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   711
489c9b5090e2 Initial load
duke
parents:
diff changeset
   712
  __ callr(G3_scratch, 0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   713
  __ delayed()->nop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   714
  __ ld_ptr(STATE(_thread), G2_thread);        // restore thread (shouldn't be needed)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   715
489c9b5090e2 Initial load
duke
parents:
diff changeset
   716
  { Label not_static;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   717
489c9b5090e2 Initial load
duke
parents:
diff changeset
   718
    __ ld_ptr(STATE(_method), G5_method);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   719
    __ ld(access_flags, O0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   720
    __ btst(JVM_ACC_STATIC, O0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   721
    __ br( Assembler::zero, false, Assembler::pt, not_static);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   722
    __ delayed()->
489c9b5090e2 Initial load
duke
parents:
diff changeset
   723
      // get native function entry point(O0 is a good temp until the very end)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   724
       ld_ptr(Address(G5_method, 0, in_bytes(methodOopDesc::native_function_offset())), O0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   725
    // for static methods insert the mirror argument
489c9b5090e2 Initial load
duke
parents:
diff changeset
   726
    const int mirror_offset = klassOopDesc::klass_part_offset_in_bytes() + Klass::java_mirror_offset_in_bytes();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   727
489c9b5090e2 Initial load
duke
parents:
diff changeset
   728
    __ ld_ptr(Address(G5_method, 0, in_bytes(methodOopDesc:: constants_offset())), O1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   729
    __ ld_ptr(Address(O1, 0, constantPoolOopDesc::pool_holder_offset_in_bytes()), O1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   730
    __ ld_ptr(O1, mirror_offset, O1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   731
    // where the mirror handle body is allocated:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   732
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   733
    if (!PrintSignatureHandlers)  // do not dirty the output with this
489c9b5090e2 Initial load
duke
parents:
diff changeset
   734
    { Label L;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   735
      __ tst(O1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   736
      __ brx(Assembler::notZero, false, Assembler::pt, L);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   737
      __ delayed()->nop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   738
      __ stop("mirror is missing");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   739
      __ bind(L);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   740
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   741
#endif // ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   742
    __ st_ptr(O1, STATE(_oop_temp));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   743
    __ add(STATE(_oop_temp), O1);            // this is really an LEA not an add
489c9b5090e2 Initial load
duke
parents:
diff changeset
   744
    __ bind(not_static);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   745
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   746
489c9b5090e2 Initial load
duke
parents:
diff changeset
   747
  // At this point, arguments have been copied off of stack into
489c9b5090e2 Initial load
duke
parents:
diff changeset
   748
  // their JNI positions, which are O1..O5 and SP[68..].
489c9b5090e2 Initial load
duke
parents:
diff changeset
   749
  // Oops are boxed in-place on the stack, with handles copied to arguments.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   750
  // The result handler is in Lscratch.  O0 will shortly hold the JNIEnv*.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   751
489c9b5090e2 Initial load
duke
parents:
diff changeset
   752
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   753
  { Label L;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   754
    __ tst(O0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   755
    __ brx(Assembler::notZero, false, Assembler::pt, L);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   756
    __ delayed()->nop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   757
    __ stop("native entry point is missing");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   758
    __ bind(L);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   759
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   760
#endif // ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   761
489c9b5090e2 Initial load
duke
parents:
diff changeset
   762
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
   763
  // setup the java frame anchor
489c9b5090e2 Initial load
duke
parents:
diff changeset
   764
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
   765
  // The scavenge function only needs to know that the PC of this frame is
489c9b5090e2 Initial load
duke
parents:
diff changeset
   766
  // in the interpreter method entry code, it doesn't need to know the exact
489c9b5090e2 Initial load
duke
parents:
diff changeset
   767
  // PC and hence we can use O7 which points to the return address from the
489c9b5090e2 Initial load
duke
parents:
diff changeset
   768
  // previous call in the code stream (signature handler function)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   769
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
   770
  // The other trick is we set last_Java_sp to FP instead of the usual SP because
489c9b5090e2 Initial load
duke
parents:
diff changeset
   771
  // we have pushed the extra frame in order to protect the volatile register(s)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   772
  // in that frame when we return from the jni call
489c9b5090e2 Initial load
duke
parents:
diff changeset
   773
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
   774
489c9b5090e2 Initial load
duke
parents:
diff changeset
   775
489c9b5090e2 Initial load
duke
parents:
diff changeset
   776
  __ set_last_Java_frame(FP, O7);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   777
  __ mov(O7, I7);  // make dummy interpreter frame look like one above,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   778
                   // not meaningless information that'll confuse me.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   779
489c9b5090e2 Initial load
duke
parents:
diff changeset
   780
  // flush the windows now. We don't care about the current (protection) frame
489c9b5090e2 Initial load
duke
parents:
diff changeset
   781
  // only the outer frames
489c9b5090e2 Initial load
duke
parents:
diff changeset
   782
489c9b5090e2 Initial load
duke
parents:
diff changeset
   783
  __ flush_windows();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   784
489c9b5090e2 Initial load
duke
parents:
diff changeset
   785
  // mark windows as flushed
489c9b5090e2 Initial load
duke
parents:
diff changeset
   786
  Address flags(G2_thread,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   787
                0,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   788
                in_bytes(JavaThread::frame_anchor_offset()) + in_bytes(JavaFrameAnchor::flags_offset()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   789
  __ set(JavaFrameAnchor::flushed, G3_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   790
  __ st(G3_scratch, flags);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   791
489c9b5090e2 Initial load
duke
parents:
diff changeset
   792
  // Transition from _thread_in_Java to _thread_in_native. We are already safepoint ready.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   793
489c9b5090e2 Initial load
duke
parents:
diff changeset
   794
  Address thread_state(G2_thread, 0, in_bytes(JavaThread::thread_state_offset()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   795
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   796
  { Label L;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   797
    __ ld(thread_state, G3_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   798
    __ cmp(G3_scratch, _thread_in_Java);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   799
    __ br(Assembler::equal, false, Assembler::pt, L);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   800
    __ delayed()->nop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   801
    __ stop("Wrong thread state in native stub");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   802
    __ bind(L);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   803
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   804
#endif // ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   805
  __ set(_thread_in_native, G3_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   806
  __ st(G3_scratch, thread_state);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   807
489c9b5090e2 Initial load
duke
parents:
diff changeset
   808
  // Call the jni method, using the delay slot to set the JNIEnv* argument.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   809
  __ callr(O0, 0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   810
  __ delayed()->
489c9b5090e2 Initial load
duke
parents:
diff changeset
   811
     add(G2_thread, in_bytes(JavaThread::jni_environment_offset()), O0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   812
  __ ld_ptr(STATE(_thread), G2_thread);  // restore thread
489c9b5090e2 Initial load
duke
parents:
diff changeset
   813
489c9b5090e2 Initial load
duke
parents:
diff changeset
   814
  // must we block?
489c9b5090e2 Initial load
duke
parents:
diff changeset
   815
489c9b5090e2 Initial load
duke
parents:
diff changeset
   816
  // Block, if necessary, before resuming in _thread_in_Java state.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   817
  // In order for GC to work, don't clear the last_Java_sp until after blocking.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   818
  { Label no_block;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   819
    Address sync_state(G3_scratch, SafepointSynchronize::address_of_state());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   820
489c9b5090e2 Initial load
duke
parents:
diff changeset
   821
    // Switch thread to "native transition" state before reading the synchronization state.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   822
    // This additional state is necessary because reading and testing the synchronization
489c9b5090e2 Initial load
duke
parents:
diff changeset
   823
    // state is not atomic w.r.t. GC, as this scenario demonstrates:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   824
    //     Java thread A, in _thread_in_native state, loads _not_synchronized and is preempted.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   825
    //     VM thread changes sync state to synchronizing and suspends threads for GC.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   826
    //     Thread A is resumed to finish this native method, but doesn't block here since it
489c9b5090e2 Initial load
duke
parents:
diff changeset
   827
    //     didn't see any synchronization is progress, and escapes.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   828
    __ set(_thread_in_native_trans, G3_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   829
    __ st(G3_scratch, thread_state);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   830
    if(os::is_MP()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   831
      // Write serialization page so VM thread can do a pseudo remote membar.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   832
      // We use the current thread pointer to calculate a thread specific
489c9b5090e2 Initial load
duke
parents:
diff changeset
   833
      // offset to write to within the page. This minimizes bus traffic
489c9b5090e2 Initial load
duke
parents:
diff changeset
   834
      // due to cache line collision.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   835
      __ serialize_memory(G2_thread, G1_scratch, G3_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   836
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   837
    __ load_contents(sync_state, G3_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   838
    __ cmp(G3_scratch, SafepointSynchronize::_not_synchronized);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   839
489c9b5090e2 Initial load
duke
parents:
diff changeset
   840
489c9b5090e2 Initial load
duke
parents:
diff changeset
   841
    Label L;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   842
    Address suspend_state(G2_thread, 0, in_bytes(JavaThread::suspend_flags_offset()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   843
    __ br(Assembler::notEqual, false, Assembler::pn, L);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   844
    __ delayed()->
489c9b5090e2 Initial load
duke
parents:
diff changeset
   845
      ld(suspend_state, G3_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   846
    __ cmp(G3_scratch, 0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   847
    __ br(Assembler::equal, false, Assembler::pt, no_block);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   848
    __ delayed()->nop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   849
    __ bind(L);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   850
489c9b5090e2 Initial load
duke
parents:
diff changeset
   851
    // Block.  Save any potential method result value before the operation and
489c9b5090e2 Initial load
duke
parents:
diff changeset
   852
    // use a leaf call to leave the last_Java_frame setup undisturbed.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   853
    save_native_result();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   854
    __ call_VM_leaf(noreg,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   855
                    CAST_FROM_FN_PTR(address, JavaThread::check_safepoint_and_suspend_for_native_trans),
489c9b5090e2 Initial load
duke
parents:
diff changeset
   856
                    G2_thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   857
    __ ld_ptr(STATE(_thread), G2_thread);  // restore thread
489c9b5090e2 Initial load
duke
parents:
diff changeset
   858
    // Restore any method result value
489c9b5090e2 Initial load
duke
parents:
diff changeset
   859
    restore_native_result();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   860
    __ bind(no_block);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   861
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   862
489c9b5090e2 Initial load
duke
parents:
diff changeset
   863
  // Clear the frame anchor now
489c9b5090e2 Initial load
duke
parents:
diff changeset
   864
489c9b5090e2 Initial load
duke
parents:
diff changeset
   865
  __ reset_last_Java_frame();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   866
489c9b5090e2 Initial load
duke
parents:
diff changeset
   867
  // Move the result handler address
489c9b5090e2 Initial load
duke
parents:
diff changeset
   868
  __ mov(Lscratch, G3_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   869
  // return possible result to the outer frame
489c9b5090e2 Initial load
duke
parents:
diff changeset
   870
#ifndef __LP64
489c9b5090e2 Initial load
duke
parents:
diff changeset
   871
  __ mov(O0, I0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   872
  __ restore(O1, G0, O1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   873
#else
489c9b5090e2 Initial load
duke
parents:
diff changeset
   874
  __ restore(O0, G0, O0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   875
#endif /* __LP64 */
489c9b5090e2 Initial load
duke
parents:
diff changeset
   876
489c9b5090e2 Initial load
duke
parents:
diff changeset
   877
  // Move result handler to expected register
489c9b5090e2 Initial load
duke
parents:
diff changeset
   878
  __ mov(G3_scratch, Lscratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   879
489c9b5090e2 Initial load
duke
parents:
diff changeset
   880
489c9b5090e2 Initial load
duke
parents:
diff changeset
   881
  // thread state is thread_in_native_trans. Any safepoint blocking has
489c9b5090e2 Initial load
duke
parents:
diff changeset
   882
  // happened in the trampoline we are ready to switch to thread_in_Java.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   883
489c9b5090e2 Initial load
duke
parents:
diff changeset
   884
  __ set(_thread_in_Java, G3_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   885
  __ st(G3_scratch, thread_state);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   886
489c9b5090e2 Initial load
duke
parents:
diff changeset
   887
  // If we have an oop result store it where it will be safe for any further gc
489c9b5090e2 Initial load
duke
parents:
diff changeset
   888
  // until we return now that we've released the handle it might be protected by
489c9b5090e2 Initial load
duke
parents:
diff changeset
   889
489c9b5090e2 Initial load
duke
parents:
diff changeset
   890
  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   891
    Label no_oop, store_result;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   892
489c9b5090e2 Initial load
duke
parents:
diff changeset
   893
    __ set((intptr_t)AbstractInterpreter::result_handler(T_OBJECT), G3_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   894
    __ cmp(G3_scratch, Lscratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   895
    __ brx(Assembler::notEqual, false, Assembler::pt, no_oop);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   896
    __ delayed()->nop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   897
    __ addcc(G0, O0, O0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   898
    __ brx(Assembler::notZero, true, Assembler::pt, store_result);     // if result is not NULL:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   899
    __ delayed()->ld_ptr(O0, 0, O0);                                   // unbox it
489c9b5090e2 Initial load
duke
parents:
diff changeset
   900
    __ mov(G0, O0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   901
489c9b5090e2 Initial load
duke
parents:
diff changeset
   902
    __ bind(store_result);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   903
    // Store it where gc will look for it and result handler expects it.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   904
    __ st_ptr(O0, STATE(_oop_temp));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   905
489c9b5090e2 Initial load
duke
parents:
diff changeset
   906
    __ bind(no_oop);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   907
489c9b5090e2 Initial load
duke
parents:
diff changeset
   908
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   909
489c9b5090e2 Initial load
duke
parents:
diff changeset
   910
  // reset handle block
489c9b5090e2 Initial load
duke
parents:
diff changeset
   911
  __ ld_ptr(G2_thread, in_bytes(JavaThread::active_handles_offset()), G3_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   912
  __ st_ptr(G0, G3_scratch, JNIHandleBlock::top_offset_in_bytes());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   913
489c9b5090e2 Initial load
duke
parents:
diff changeset
   914
489c9b5090e2 Initial load
duke
parents:
diff changeset
   915
  // handle exceptions (exception handling will handle unlocking!)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   916
  { Label L;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   917
    Address exception_addr (G2_thread, 0, in_bytes(Thread::pending_exception_offset()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   918
489c9b5090e2 Initial load
duke
parents:
diff changeset
   919
    __ ld_ptr(exception_addr, Gtemp);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   920
    __ tst(Gtemp);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   921
    __ brx(Assembler::equal, false, Assembler::pt, L);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   922
    __ delayed()->nop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   923
    __ bind(pending_exception_present);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   924
    // With c++ interpreter we just leave it pending caller will do the correct thing. However...
489c9b5090e2 Initial load
duke
parents:
diff changeset
   925
    // Like x86 we ignore the result of the native call and leave the method locked. This
489c9b5090e2 Initial load
duke
parents:
diff changeset
   926
    // seems wrong to leave things locked.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   927
489c9b5090e2 Initial load
duke
parents:
diff changeset
   928
    __ br(Assembler::always, false, Assembler::pt, StubRoutines::forward_exception_entry(), relocInfo::runtime_call_type);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   929
    __ delayed()->restore(I5_savedSP, G0, SP);  // remove interpreter frame
489c9b5090e2 Initial load
duke
parents:
diff changeset
   930
489c9b5090e2 Initial load
duke
parents:
diff changeset
   931
    __ bind(L);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   932
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   933
489c9b5090e2 Initial load
duke
parents:
diff changeset
   934
  // jvmdi/jvmpi support (preserves thread register)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   935
  __ notify_method_exit(true, ilgl, InterpreterMacroAssembler::NotifyJVMTI);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   936
489c9b5090e2 Initial load
duke
parents:
diff changeset
   937
  if (synchronized) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   938
    // save and restore any potential method result value around the unlocking operation
489c9b5090e2 Initial load
duke
parents:
diff changeset
   939
    save_native_result();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   940
489c9b5090e2 Initial load
duke
parents:
diff changeset
   941
    const int entry_size            = frame::interpreter_frame_monitor_size() * wordSize;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   942
    // Get the initial monitor we allocated
489c9b5090e2 Initial load
duke
parents:
diff changeset
   943
    __ sub(Lstate, entry_size, O1);                        // initial monitor
489c9b5090e2 Initial load
duke
parents:
diff changeset
   944
    __ unlock_object(O1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   945
    restore_native_result();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   946
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   947
489c9b5090e2 Initial load
duke
parents:
diff changeset
   948
#if defined(COMPILER2) && !defined(_LP64)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   949
489c9b5090e2 Initial load
duke
parents:
diff changeset
   950
  // C2 expects long results in G1 we can't tell if we're returning to interpreted
489c9b5090e2 Initial load
duke
parents:
diff changeset
   951
  // or compiled so just be safe.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   952
489c9b5090e2 Initial load
duke
parents:
diff changeset
   953
  __ sllx(O0, 32, G1);          // Shift bits into high G1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   954
  __ srl (O1, 0, O1);           // Zero extend O1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   955
  __ or3 (O1, G1, G1);          // OR 64 bits into G1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   956
489c9b5090e2 Initial load
duke
parents:
diff changeset
   957
#endif /* COMPILER2 && !_LP64 */
489c9b5090e2 Initial load
duke
parents:
diff changeset
   958
489c9b5090e2 Initial load
duke
parents:
diff changeset
   959
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
   960
  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   961
    Label ok;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   962
    __ cmp(I5_savedSP, FP);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   963
    __ brx(Assembler::greaterEqualUnsigned, false, Assembler::pt, ok);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   964
    __ delayed()->nop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   965
    __ stop("bad I5_savedSP value");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   966
    __ should_not_reach_here();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   967
    __ bind(ok);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   968
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   969
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
   970
  // Calls result handler which POPS FRAME
489c9b5090e2 Initial load
duke
parents:
diff changeset
   971
  if (TraceJumps) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   972
    // Move target to register that is recordable
489c9b5090e2 Initial load
duke
parents:
diff changeset
   973
    __ mov(Lscratch, G3_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   974
    __ JMP(G3_scratch, 0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   975
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   976
    __ jmp(Lscratch, 0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   977
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   978
  __ delayed()->nop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   979
489c9b5090e2 Initial load
duke
parents:
diff changeset
   980
  if (inc_counter) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   981
    // handle invocation counter overflow
489c9b5090e2 Initial load
duke
parents:
diff changeset
   982
    __ bind(invocation_counter_overflow);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   983
    generate_counter_overflow(Lcontinue);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   984
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   985
489c9b5090e2 Initial load
duke
parents:
diff changeset
   986
489c9b5090e2 Initial load
duke
parents:
diff changeset
   987
  return entry;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   988
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   989
489c9b5090e2 Initial load
duke
parents:
diff changeset
   990
void CppInterpreterGenerator::generate_compute_interpreter_state(const Register state,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   991
                                                              const Register prev_state,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   992
                                                              bool native) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   993
489c9b5090e2 Initial load
duke
parents:
diff changeset
   994
  // On entry
489c9b5090e2 Initial load
duke
parents:
diff changeset
   995
  // G5_method - caller's method
489c9b5090e2 Initial load
duke
parents:
diff changeset
   996
  // Gargs - points to initial parameters (i.e. locals[0])
489c9b5090e2 Initial load
duke
parents:
diff changeset
   997
  // G2_thread - valid? (C1 only??)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   998
  // "prev_state" - contains any previous frame manager state which we must save a link
489c9b5090e2 Initial load
duke
parents:
diff changeset
   999
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1000
  // On return
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1001
  // "state" is a pointer to the newly allocated  state object. We must allocate and initialize
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1002
  // a new interpretState object and the method expression stack.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1003
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1004
  assert_different_registers(state, prev_state);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1005
  assert_different_registers(prev_state, G3_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1006
  const Register Gtmp = G3_scratch;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1007
  const Address constants         (G5_method, 0, in_bytes(methodOopDesc::constants_offset()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1008
  const Address access_flags      (G5_method, 0, in_bytes(methodOopDesc::access_flags_offset()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1009
  const Address size_of_parameters(G5_method, 0, in_bytes(methodOopDesc::size_of_parameters_offset()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1010
  const Address max_stack         (G5_method, 0, in_bytes(methodOopDesc::max_stack_offset()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1011
  const Address size_of_locals    (G5_method, 0, in_bytes(methodOopDesc::size_of_locals_offset()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1012
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1013
  // slop factor is two extra slots on the expression stack so that
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1014
  // we always have room to store a result when returning from a call without parameters
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1015
  // that returns a result.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1016
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1017
  const int slop_factor = 2*wordSize;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1018
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1019
  const int fixed_size = ((sizeof(BytecodeInterpreter) + slop_factor) >> LogBytesPerWord) + // what is the slop factor?
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1020
                         frame::memory_parameter_word_sp_offset +  // register save area + param window
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1021
                         (native ?  frame::interpreter_frame_extra_outgoing_argument_words : 0); // JNI, class
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1022
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1023
  // XXX G5_method valid
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1024
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1025
  // Now compute new frame size
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1026
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1027
  if (native) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1028
    __ lduh( size_of_parameters, Gtmp );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1029
    __ calc_mem_param_words(Gtmp, Gtmp);     // space for native call parameters passed on the stack in words
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1030
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1031
    __ lduh(max_stack, Gtmp);                // Full size expression stack
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1032
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1033
  __ add(Gtmp, fixed_size, Gtmp);           // plus the fixed portion
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1034
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1035
  __ neg(Gtmp);                               // negative space for stack/parameters in words
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1036
  __ and3(Gtmp, -WordsPerLong, Gtmp);        // make multiple of 2 (SP must be 2-word aligned)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1037
  __ sll(Gtmp, LogBytesPerWord, Gtmp);       // negative space for frame in bytes
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1038
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1039
  // Need to do stack size check here before we fault on large frames
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1040
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1041
  Label stack_ok;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1042
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1043
  const int max_pages = StackShadowPages > (StackRedPages+StackYellowPages) ? StackShadowPages :
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1044
                                                                              (StackRedPages+StackYellowPages);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1045
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1046
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1047
  __ ld_ptr(G2_thread, in_bytes(Thread::stack_base_offset()), O0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1048
  __ ld_ptr(G2_thread, in_bytes(Thread::stack_size_offset()), O1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1049
  // compute stack bottom
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1050
  __ sub(O0, O1, O0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1051
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1052
  // Avoid touching the guard pages
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1053
  // Also a fudge for frame size of BytecodeInterpreter::run
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1054
  // It varies from 1k->4k depending on build type
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1055
  const int fudge = 6 * K;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1056
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1057
  __ set(fudge + (max_pages * os::vm_page_size()), O1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1058
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1059
  __ add(O0, O1, O0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1060
  __ sub(O0, Gtmp, O0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1061
  __ cmp(SP, O0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1062
  __ brx(Assembler::greaterUnsigned, false, Assembler::pt, stack_ok);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1063
  __ delayed()->nop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1064
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1065
     // throw exception return address becomes throwing pc
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1066
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1067
  __ call_VM(Oexception, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_StackOverflowError));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1068
  __ stop("never reached");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1069
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1070
  __ bind(stack_ok);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1071
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1072
  __ save(SP, Gtmp, SP);                      // setup new frame and register window
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1073
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1074
  // New window I7 call_stub or previous activation
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1075
  // O6 - register save area, BytecodeInterpreter just below it, args/locals just above that
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1076
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1077
  __ sub(FP, sizeof(BytecodeInterpreter), state);        // Point to new Interpreter state
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1078
  __ add(state, STACK_BIAS, state );         // Account for 64bit bias
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1079
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1080
#define XXX_STATE(field_name) state, in_bytes(byte_offset_of(BytecodeInterpreter, field_name))
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1081
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1082
  // Initialize a new Interpreter state
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1083
  // orig_sp - caller's original sp
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1084
  // G2_thread - thread
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1085
  // Gargs - &locals[0] (unbiased?)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1086
  // G5_method - method
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1087
  // SP (biased) - accounts for full size java stack, BytecodeInterpreter object, register save area, and register parameter save window
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1088
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1089
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1090
  __ set(0xdead0004, O1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1091
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1092
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1093
  __ st_ptr(Gargs, XXX_STATE(_locals));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1094
  __ st_ptr(G0, XXX_STATE(_oop_temp));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1095
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1096
  __ st_ptr(state, XXX_STATE(_self_link));                // point to self
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1097
  __ st_ptr(prev_state->after_save(), XXX_STATE(_prev_link)); // Chain interpreter states
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1098
  __ st_ptr(G2_thread, XXX_STATE(_thread));               // Store javathread
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1099
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1100
  if (native) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1101
    __ st_ptr(G0, XXX_STATE(_bcp));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1102
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1103
    __ ld_ptr(G5_method, in_bytes(methodOopDesc::const_offset()), O2); // get constMethodOop
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1104
    __ add(O2, in_bytes(constMethodOopDesc::codes_offset()), O2);        // get bcp
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1105
    __ st_ptr(O2, XXX_STATE(_bcp));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1106
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1107
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1108
  __ st_ptr(G0, XXX_STATE(_mdx));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1109
  __ st_ptr(G5_method, XXX_STATE(_method));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1110
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1111
  __ set((int) BytecodeInterpreter::method_entry, O1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1112
  __ st(O1, XXX_STATE(_msg));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1113
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1114
  __ ld_ptr(constants, O3);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1115
  __ ld_ptr(O3, constantPoolOopDesc::cache_offset_in_bytes(), O2);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1116
  __ st_ptr(O2, XXX_STATE(_constants));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1117
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1118
  __ st_ptr(G0, XXX_STATE(_result._to_call._callee));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1119
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1120
  // Monitor base is just start of BytecodeInterpreter object;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1121
  __ mov(state, O2);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1122
  __ st_ptr(O2, XXX_STATE(_monitor_base));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1123
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1124
  // Do we need a monitor for synchonized method?
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1125
  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1126
    __ ld(access_flags, O1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1127
    Label done;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1128
    Label got_obj;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1129
    __ btst(JVM_ACC_SYNCHRONIZED, O1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1130
    __ br( Assembler::zero, false, Assembler::pt, done);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1131
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1132
    const int mirror_offset = klassOopDesc::klass_part_offset_in_bytes() + Klass::java_mirror_offset_in_bytes();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1133
    __ delayed()->btst(JVM_ACC_STATIC, O1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1134
    __ ld_ptr(XXX_STATE(_locals), O1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1135
    __ br( Assembler::zero, true, Assembler::pt, got_obj);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1136
    __ delayed()->ld_ptr(O1, 0, O1);                  // get receiver for not-static case
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1137
    __ ld_ptr(constants, O1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1138
    __ ld_ptr( O1, constantPoolOopDesc::pool_holder_offset_in_bytes(), O1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1139
    // lock the mirror, not the klassOop
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1140
    __ ld_ptr( O1, mirror_offset, O1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1141
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1142
    __ bind(got_obj);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1143
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1144
  #ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1145
    __ tst(O1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1146
    __ breakpoint_trap(Assembler::zero);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1147
  #endif // ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1148
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1149
    const int entry_size            = frame::interpreter_frame_monitor_size() * wordSize;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1150
    __ sub(SP, entry_size, SP);                         // account for initial monitor
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1151
    __ sub(O2, entry_size, O2);                        // initial monitor
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1152
    __ st_ptr(O1, O2, BasicObjectLock::obj_offset_in_bytes()); // and allocate it for interpreter use
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1153
    __ bind(done);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1154
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1155
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1156
  // Remember initial frame bottom
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1157
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1158
  __ st_ptr(SP, XXX_STATE(_frame_bottom));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1159
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1160
  __ st_ptr(O2, XXX_STATE(_stack_base));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1161
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1162
  __ sub(O2, wordSize, O2);                    // prepush
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1163
  __ st_ptr(O2, XXX_STATE(_stack));                // PREPUSH
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1164
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1165
  __ lduh(max_stack, O3);                      // Full size expression stack
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1166
  __ sll(O3, LogBytesPerWord, O3);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1167
  __ sub(O2, O3, O3);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1168
//  __ sub(O3, wordSize, O3);                    // so prepush doesn't look out of bounds
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1169
  __ st_ptr(O3, XXX_STATE(_stack_limit));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1170
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1171
  if (!native) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1172
    //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1173
    // Code to initialize locals
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1174
    //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1175
    Register init_value = noreg;    // will be G0 if we must clear locals
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1176
    // Now zero locals
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1177
    if (true /* zerolocals */ || ClearInterpreterLocals) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1178
      // explicitly initialize locals
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1179
      init_value = G0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1180
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1181
    #ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1182
      // initialize locals to a garbage pattern for better debugging
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1183
      init_value = O3;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1184
      __ set( 0x0F0F0F0F, init_value );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1185
    #endif // ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1186
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1187
    if (init_value != noreg) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1188
      Label clear_loop;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1189
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1190
      // NOTE: If you change the frame layout, this code will need to
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1191
      // be updated!
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1192
      __ lduh( size_of_locals, O2 );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1193
      __ lduh( size_of_parameters, O1 );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1194
      __ sll( O2, LogBytesPerWord, O2);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1195
      __ sll( O1, LogBytesPerWord, O1 );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1196
      __ ld_ptr(XXX_STATE(_locals), L2_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1197
      __ sub( L2_scratch, O2, O2 );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1198
      __ sub( L2_scratch, O1, O1 );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1199
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1200
      __ bind( clear_loop );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1201
      __ inc( O2, wordSize );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1202
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1203
      __ cmp( O2, O1 );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1204
      __ br( Assembler::lessEqualUnsigned, true, Assembler::pt, clear_loop );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1205
      __ delayed()->st_ptr( init_value, O2, 0 );
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1206
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1207
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1208
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1209
// Find preallocated  monitor and lock method (C++ interpreter)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1210
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1211
void InterpreterGenerator::lock_method(void) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1212
// Lock the current method.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1213
// Destroys registers L2_scratch, L3_scratch, O0
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1214
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1215
// Find everything relative to Lstate
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1216
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1217
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1218
  __ ld_ptr(STATE(_method), L2_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1219
  __ ld(L2_scratch, in_bytes(methodOopDesc::access_flags_offset()), O0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1220
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1221
 { Label ok;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1222
   __ btst(JVM_ACC_SYNCHRONIZED, O0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1223
   __ br( Assembler::notZero, false, Assembler::pt, ok);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1224
   __ delayed()->nop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1225
   __ stop("method doesn't need synchronization");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1226
   __ bind(ok);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1227
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1228
#endif // ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1229
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1230
  // monitor is already allocated at stack base
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1231
  // and the lockee is already present
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1232
  __ ld_ptr(STATE(_stack_base), L2_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1233
  __ ld_ptr(L2_scratch, BasicObjectLock::obj_offset_in_bytes(), O0);   // get object
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1234
  __ lock_object(L2_scratch, O0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1235
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1236
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1237
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1238
//  Generate code for handling resuming a deopted method
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1239
void CppInterpreterGenerator::generate_deopt_handling() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1240
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1241
  Label return_from_deopt_common;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1242
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1243
  // deopt needs to jump to here to enter the interpreter (return a result)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1244
  deopt_frame_manager_return_atos  = __ pc();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1245
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1246
  // O0/O1 live
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1247
  __ ba(false, return_from_deopt_common);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1248
  __ delayed()->set(AbstractInterpreter::BasicType_as_index(T_OBJECT), L3_scratch);    // Result stub address array index
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1249
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1250
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1251
  // deopt needs to jump to here to enter the interpreter (return a result)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1252
  deopt_frame_manager_return_btos  = __ pc();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1253
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1254
  // O0/O1 live
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1255
  __ ba(false, return_from_deopt_common);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1256
  __ delayed()->set(AbstractInterpreter::BasicType_as_index(T_BOOLEAN), L3_scratch);    // Result stub address array index
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1257
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1258
  // deopt needs to jump to here to enter the interpreter (return a result)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1259
  deopt_frame_manager_return_itos  = __ pc();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1260
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1261
  // O0/O1 live
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1262
  __ ba(false, return_from_deopt_common);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1263
  __ delayed()->set(AbstractInterpreter::BasicType_as_index(T_INT), L3_scratch);    // Result stub address array index
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1264
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1265
  // deopt needs to jump to here to enter the interpreter (return a result)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1266
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1267
  deopt_frame_manager_return_ltos  = __ pc();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1268
#if !defined(_LP64) && defined(COMPILER2)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1269
  // All return values are where we want them, except for Longs.  C2 returns
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1270
  // longs in G1 in the 32-bit build whereas the interpreter wants them in O0/O1.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1271
  // Since the interpreter will return longs in G1 and O0/O1 in the 32bit
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1272
  // build even if we are returning from interpreted we just do a little
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1273
  // stupid shuffing.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1274
  // Note: I tried to make c2 return longs in O0/O1 and G1 so we wouldn't have to
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1275
  // do this here. Unfortunately if we did a rethrow we'd see an machepilog node
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1276
  // first which would move g1 -> O0/O1 and destroy the exception we were throwing.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1277
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1278
  __ srl (G1, 0,O1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1279
  __ srlx(G1,32,O0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1280
#endif /* !_LP64 && COMPILER2 */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1281
  // O0/O1 live
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1282
  __ ba(false, return_from_deopt_common);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1283
  __ delayed()->set(AbstractInterpreter::BasicType_as_index(T_LONG), L3_scratch);    // Result stub address array index
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1284
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1285
  // deopt needs to jump to here to enter the interpreter (return a result)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1286
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1287
  deopt_frame_manager_return_ftos  = __ pc();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1288
  // O0/O1 live
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1289
  __ ba(false, return_from_deopt_common);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1290
  __ delayed()->set(AbstractInterpreter::BasicType_as_index(T_FLOAT), L3_scratch);    // Result stub address array index
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1291
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1292
  // deopt needs to jump to here to enter the interpreter (return a result)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1293
  deopt_frame_manager_return_dtos  = __ pc();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1294
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1295
  // O0/O1 live
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1296
  __ ba(false, return_from_deopt_common);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1297
  __ delayed()->set(AbstractInterpreter::BasicType_as_index(T_DOUBLE), L3_scratch);    // Result stub address array index
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1298
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1299
  // deopt needs to jump to here to enter the interpreter (return a result)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1300
  deopt_frame_manager_return_vtos  = __ pc();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1301
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1302
  // O0/O1 live
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1303
  __ set(AbstractInterpreter::BasicType_as_index(T_VOID), L3_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1304
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1305
  // Deopt return common
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1306
  // an index is present that lets us move any possible result being
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1307
  // return to the interpreter's stack
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1308
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1309
  __ bind(return_from_deopt_common);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1310
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1311
  // Result if any is in native abi result (O0..O1/F0..F1). The java expression
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1312
  // stack is in the state that the  calling convention left it.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1313
  // Copy the result from native abi result and place it on java expression stack.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1314
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1315
  // Current interpreter state is present in Lstate
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1316
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1317
  // Get current pre-pushed top of interpreter stack
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1318
  // Any result (if any) is in native abi
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1319
  // result type index is in L3_scratch
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1320
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1321
  __ ld_ptr(STATE(_stack), L1_scratch);                                          // get top of java expr stack
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1322
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1323
  __ set((intptr_t)CppInterpreter::_tosca_to_stack, L4_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1324
  __ sll(L3_scratch, LogBytesPerWord, L3_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1325
  __ ld_ptr(L4_scratch, L3_scratch, Lscratch);                                       // get typed result converter address
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1326
  __ jmpl(Lscratch, G0, O7);                                         // and convert it
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1327
  __ delayed()->nop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1328
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1329
  // L1_scratch points to top of stack (prepushed)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1330
  __ st_ptr(L1_scratch, STATE(_stack));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1331
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1332
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1333
// Generate the code to handle a more_monitors message from the c++ interpreter
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1334
void CppInterpreterGenerator::generate_more_monitors() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1335
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1336
  Label entry, loop;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1337
  const int entry_size = frame::interpreter_frame_monitor_size() * wordSize;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1338
  // 1. compute new pointers                                // esp: old expression stack top
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1339
  __ delayed()->ld_ptr(STATE(_stack_base), L4_scratch);            // current expression stack bottom
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1340
  __ sub(L4_scratch, entry_size, L4_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1341
  __ st_ptr(L4_scratch, STATE(_stack_base));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1342
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1343
  __ sub(SP, entry_size, SP);                  // Grow stack
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1344
  __ st_ptr(SP, STATE(_frame_bottom));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1345
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1346
  __ ld_ptr(STATE(_stack_limit), L2_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1347
  __ sub(L2_scratch, entry_size, L2_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1348
  __ st_ptr(L2_scratch, STATE(_stack_limit));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1349
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1350
  __ ld_ptr(STATE(_stack), L1_scratch);                // Get current stack top
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1351
  __ sub(L1_scratch, entry_size, L1_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1352
  __ st_ptr(L1_scratch, STATE(_stack));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1353
  __ ba(false, entry);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1354
  __ delayed()->add(L1_scratch, wordSize, L1_scratch);        // first real entry (undo prepush)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1355
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1356
  // 2. move expression stack
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1357
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1358
  __ bind(loop);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1359
  __ st_ptr(L3_scratch, Address(L1_scratch, 0));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1360
  __ add(L1_scratch, wordSize, L1_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1361
  __ bind(entry);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1362
  __ cmp(L1_scratch, L4_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1363
  __ br(Assembler::notEqual, false, Assembler::pt, loop);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1364
  __ delayed()->ld_ptr(L1_scratch, entry_size, L3_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1365
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1366
  // now zero the slot so we can find it.
370
33ba64c16c1f 6688137: c++ interpreter fails on 64bit sparc
sgoldman
parents: 1
diff changeset
  1367
  __ st_ptr(G0, L4_scratch, BasicObjectLock::obj_offset_in_bytes());
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1368
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1369
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1370
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1371
// Initial entry to C++ interpreter from the call_stub.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1372
// This entry point is called the frame manager since it handles the generation
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1373
// of interpreter activation frames via requests directly from the vm (via call_stub)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1374
// and via requests from the interpreter. The requests from the call_stub happen
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1375
// directly thru the entry point. Requests from the interpreter happen via returning
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1376
// from the interpreter and examining the message the interpreter has returned to
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1377
// the frame manager. The frame manager can take the following requests:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1378
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1379
// NO_REQUEST - error, should never happen.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1380
// MORE_MONITORS - need a new monitor. Shuffle the expression stack on down and
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1381
//                 allocate a new monitor.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1382
// CALL_METHOD - setup a new activation to call a new method. Very similar to what
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1383
//               happens during entry during the entry via the call stub.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1384
// RETURN_FROM_METHOD - remove an activation. Return to interpreter or call stub.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1385
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1386
// Arguments:
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1387
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1388
// ebx: methodOop
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1389
// ecx: receiver - unused (retrieved from stack as needed)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1390
// esi: previous frame manager state (NULL from the call_stub/c1/c2)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1391
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1392
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1393
// Stack layout at entry
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1394
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1395
// [ return address     ] <--- esp
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1396
// [ parameter n        ]
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1397
//   ...
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1398
// [ parameter 1        ]
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1399
// [ expression stack   ]
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1400
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1401
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1402
// We are free to blow any registers we like because the call_stub which brought us here
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1403
// initially has preserved the callee save registers already.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1404
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1405
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1406
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1407
static address interpreter_frame_manager = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1408
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1409
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1410
  #define VALIDATE_STATE(scratch, marker)                         \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1411
  {                                                               \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1412
    Label skip;                                                   \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1413
    __ ld_ptr(STATE(_self_link), scratch);                        \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1414
    __ cmp(Lstate, scratch);                                      \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1415
    __ brx(Assembler::equal, false, Assembler::pt, skip);         \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1416
    __ delayed()->nop();                                          \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1417
    __ breakpoint_trap();                                         \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1418
    __ emit_long(marker);                                         \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1419
    __ bind(skip);                                                \
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1420
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1421
#else
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1422
  #define VALIDATE_STATE(scratch, marker)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1423
#endif /* ASSERT */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1424
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1425
void CppInterpreterGenerator::adjust_callers_stack(Register args) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1426
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1427
// Adjust caller's stack so that all the locals can be contiguous with
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1428
// the parameters.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1429
// Worries about stack overflow make this a pain.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1430
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1431
// Destroys args, G3_scratch, G3_scratch
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1432
// In/Out O5_savedSP (sender's original SP)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1433
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1434
//  assert_different_registers(state, prev_state);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1435
  const Register Gtmp = G3_scratch;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1436
  const Register tmp = O2;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1437
  const Address size_of_parameters(G5_method, 0, in_bytes(methodOopDesc::size_of_parameters_offset()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1438
  const Address size_of_locals    (G5_method, 0, in_bytes(methodOopDesc::size_of_locals_offset()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1439
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1440
  __ lduh(size_of_parameters, tmp);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1441
  __ sll(tmp, LogBytesPerWord, Gtmp);       // parameter size in bytes
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1442
  __ add(args, Gtmp, Gargs);                // points to first local + BytesPerWord
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1443
  // NEW
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1444
  __ add(Gargs, -wordSize, Gargs);             // points to first local[0]
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1445
  // determine extra space for non-argument locals & adjust caller's SP
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1446
  // Gtmp1: parameter size in words
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1447
  __ lduh(size_of_locals, Gtmp);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1448
  __ compute_extra_locals_size_in_bytes(tmp, Gtmp, Gtmp);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1449
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1450
#if 1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1451
  // c2i adapters place the final interpreter argument in the register save area for O0/I0
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1452
  // the call_stub will place the final interpreter argument at
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1453
  // frame::memory_parameter_word_sp_offset. This is mostly not noticable for either asm
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1454
  // or c++ interpreter. However with the c++ interpreter when we do a recursive call
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1455
  // and try to make it look good in the debugger we will store the argument to
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1456
  // RecursiveInterpreterActivation in the register argument save area. Without allocating
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1457
  // extra space for the compiler this will overwrite locals in the local array of the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1458
  // interpreter.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1459
  // QQQ still needed with frameless adapters???
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1460
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1461
  const int c2i_adjust_words = frame::memory_parameter_word_sp_offset - frame::callee_register_argument_save_area_sp_offset;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1462
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1463
  __ add(Gtmp, c2i_adjust_words*wordSize, Gtmp);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1464
#endif // 1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1465
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1466
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1467
  __ sub(SP, Gtmp, SP);                      // just caller's frame for the additional space we need.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1468
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1469
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1470
address InterpreterGenerator::generate_normal_entry(bool synchronized) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1471
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1472
  // G5_method: methodOop
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1473
  // G2_thread: thread (unused)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1474
  // Gargs:   bottom of args (sender_sp)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1475
  // O5: sender's sp
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1476
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1477
  // A single frame manager is plenty as we don't specialize for synchronized. We could and
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1478
  // the code is pretty much ready. Would need to change the test below and for good measure
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1479
  // modify generate_interpreter_state to only do the (pre) sync stuff stuff for synchronized
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1480
  // routines. Not clear this is worth it yet.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1481
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1482
  if (interpreter_frame_manager) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1483
    return interpreter_frame_manager;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1484
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1485
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1486
  __ bind(frame_manager_entry);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1487
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1488
  // the following temporary registers are used during frame creation
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1489
  const Register Gtmp1 = G3_scratch;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1490
  // const Register Lmirror = L1;     // native mirror (native calls only)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1491
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1492
  const Address constants         (G5_method, 0, in_bytes(methodOopDesc::constants_offset()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1493
  const Address access_flags      (G5_method, 0, in_bytes(methodOopDesc::access_flags_offset()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1494
  const Address size_of_parameters(G5_method, 0, in_bytes(methodOopDesc::size_of_parameters_offset()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1495
  const Address max_stack         (G5_method, 0, in_bytes(methodOopDesc::max_stack_offset()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1496
  const Address size_of_locals    (G5_method, 0, in_bytes(methodOopDesc::size_of_locals_offset()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1497
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1498
  address entry_point = __ pc();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1499
  __ mov(G0, prevState);                                                 // no current activation
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1500
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1501
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1502
  Label re_dispatch;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1503
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1504
  __ bind(re_dispatch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1505
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1506
  // Interpreter needs to have locals completely contiguous. In order to do that
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1507
  // We must adjust the caller's stack pointer for any locals beyond just the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1508
  // parameters
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1509
  adjust_callers_stack(Gargs);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1510
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1511
  // O5_savedSP still contains sender's sp
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1512
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1513
  // NEW FRAME
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1514
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1515
  generate_compute_interpreter_state(Lstate, prevState, false);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1516
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1517
  // At this point a new interpreter frame and state object are created and initialized
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1518
  // Lstate has the pointer to the new activation
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1519
  // Any stack banging or limit check should already be done.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1520
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1521
  Label call_interpreter;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1522
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1523
  __ bind(call_interpreter);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1524
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1525
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1526
#if 1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1527
  __ set(0xdead002, Lmirror);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1528
  __ set(0xdead002, L2_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1529
  __ set(0xdead003, L3_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1530
  __ set(0xdead004, L4_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1531
  __ set(0xdead005, Lscratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1532
  __ set(0xdead006, Lscratch2);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1533
  __ set(0xdead007, L7_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1534
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1535
  __ set(0xdeaf002, O2);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1536
  __ set(0xdeaf003, O3);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1537
  __ set(0xdeaf004, O4);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1538
  __ set(0xdeaf005, O5);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1539
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1540
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1541
  // Call interpreter (stack bang complete) enter here if message is
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1542
  // set and we know stack size is valid
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1543
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1544
  Label call_interpreter_2;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1545
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1546
  __ bind(call_interpreter_2);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1547
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1548
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1549
  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1550
    Label skip;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1551
    __ ld_ptr(STATE(_frame_bottom), G3_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1552
    __ cmp(G3_scratch, SP);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1553
    __ brx(Assembler::equal, false, Assembler::pt, skip);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1554
    __ delayed()->nop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1555
    __ stop("SP not restored to frame bottom");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1556
    __ bind(skip);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1557
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1558
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1559
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1560
  VALIDATE_STATE(G3_scratch, 4);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1561
  __ set_last_Java_frame(SP, noreg);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1562
  __ mov(Lstate, O0);                 // (arg) pointer to current state
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1563
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1564
  __ call(CAST_FROM_FN_PTR(address,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1565
                           JvmtiExport::can_post_interpreter_events() ?
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1566
                                                                  BytecodeInterpreter::runWithChecks
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1567
                                                                : BytecodeInterpreter::run),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1568
         relocInfo::runtime_call_type);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1569
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1570
  __ delayed()->nop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1571
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1572
  __ ld_ptr(STATE(_thread), G2_thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1573
  __ reset_last_Java_frame();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1574
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1575
  // examine msg from interpreter to determine next action
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1576
  __ ld_ptr(STATE(_thread), G2_thread);                                  // restore G2_thread
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1577
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1578
  __ ld(STATE(_msg), L1_scratch);                                       // Get new message
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1579
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1580
  Label call_method;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1581
  Label return_from_interpreted_method;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1582
  Label throw_exception;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1583
  Label do_OSR;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1584
  Label bad_msg;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1585
  Label resume_interpreter;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1586
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1587
  __ cmp(L1_scratch, (int)BytecodeInterpreter::call_method);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1588
  __ br(Assembler::equal, false, Assembler::pt, call_method);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1589
  __ delayed()->cmp(L1_scratch, (int)BytecodeInterpreter::return_from_method);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1590
  __ br(Assembler::equal, false, Assembler::pt, return_from_interpreted_method);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1591
  __ delayed()->cmp(L1_scratch, (int)BytecodeInterpreter::throwing_exception);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1592
  __ br(Assembler::equal, false, Assembler::pt, throw_exception);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1593
  __ delayed()->cmp(L1_scratch, (int)BytecodeInterpreter::do_osr);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1594
  __ br(Assembler::equal, false, Assembler::pt, do_OSR);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1595
  __ delayed()->cmp(L1_scratch, (int)BytecodeInterpreter::more_monitors);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1596
  __ br(Assembler::notEqual, false, Assembler::pt, bad_msg);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1597
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1598
  // Allocate more monitor space, shuffle expression stack....
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1599
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1600
  generate_more_monitors();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1601
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1602
  // new monitor slot allocated, resume the interpreter.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1603
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1604
  __ set((int)BytecodeInterpreter::got_monitors, L1_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1605
  VALIDATE_STATE(G3_scratch, 5);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1606
  __ ba(false, call_interpreter);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1607
  __ delayed()->st(L1_scratch, STATE(_msg));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1608
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1609
  // uncommon trap needs to jump to here to enter the interpreter (re-execute current bytecode)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1610
  unctrap_frame_manager_entry  = __ pc();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1611
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1612
  // QQQ what message do we send
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1613
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1614
  __ ba(false, call_interpreter);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1615
  __ delayed()->ld_ptr(STATE(_frame_bottom), SP);                  // restore to full stack frame
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1616
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1617
  //=============================================================================
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1618
  // Returning from a compiled method into a deopted method. The bytecode at the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1619
  // bcp has completed. The result of the bytecode is in the native abi (the tosca
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1620
  // for the template based interpreter). Any stack space that was used by the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1621
  // bytecode that has completed has been removed (e.g. parameters for an invoke)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1622
  // so all that we have to do is place any pending result on the expression stack
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1623
  // and resume execution on the next bytecode.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1624
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1625
  generate_deopt_handling();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1626
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1627
  // ready to resume the interpreter
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1628
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1629
  __ set((int)BytecodeInterpreter::deopt_resume, L1_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1630
  __ ba(false, call_interpreter);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1631
  __ delayed()->st(L1_scratch, STATE(_msg));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1632
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1633
  // Current frame has caught an exception we need to dispatch to the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1634
  // handler. We can get here because a native interpreter frame caught
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1635
  // an exception in which case there is no handler and we must rethrow
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1636
  // If it is a vanilla interpreted frame the we simply drop into the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1637
  // interpreter and let it do the lookup.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1638
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1639
  Interpreter::_rethrow_exception_entry = __ pc();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1640
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1641
  Label return_with_exception;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1642
  Label unwind_and_forward;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1643
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1644
  // O0: exception
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1645
  // O7: throwing pc
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1646
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1647
  // We want exception in the thread no matter what we ultimately decide about frame type.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1648
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1649
  Address exception_addr (G2_thread, 0, in_bytes(Thread::pending_exception_offset()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1650
  __ verify_thread();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1651
  __ st_ptr(O0, exception_addr);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1652
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1653
  // get the methodOop
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1654
  __ ld_ptr(STATE(_method), G5_method);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1655
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1656
  // if this current frame vanilla or native?
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1657
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1658
  __ ld(access_flags, Gtmp1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1659
  __ btst(JVM_ACC_NATIVE, Gtmp1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1660
  __ br(Assembler::zero, false, Assembler::pt, return_with_exception);  // vanilla interpreted frame handle directly
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1661
  __ delayed()->nop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1662
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1663
  // We drop thru to unwind a native interpreted frame with a pending exception
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1664
  // We jump here for the initial interpreter frame with exception pending
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1665
  // We unwind the current acivation and forward it to our caller.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1666
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1667
  __ bind(unwind_and_forward);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1668
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1669
  // Unwind frame and jump to forward exception. unwinding will place throwing pc in O7
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1670
  // as expected by forward_exception.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1671
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1672
  __ restore(FP, G0, SP);                  // unwind interpreter state frame
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1673
  __ br(Assembler::always, false, Assembler::pt, StubRoutines::forward_exception_entry(), relocInfo::runtime_call_type);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1674
  __ delayed()->mov(I5_savedSP->after_restore(), SP);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1675
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1676
  // Return point from a call which returns a result in the native abi
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1677
  // (c1/c2/jni-native). This result must be processed onto the java
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1678
  // expression stack.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1679
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1680
  // A pending exception may be present in which case there is no result present
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1681
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1682
  address return_from_native_method = __ pc();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1683
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1684
  VALIDATE_STATE(G3_scratch, 6);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1685
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1686
  // Result if any is in native abi result (O0..O1/F0..F1). The java expression
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1687
  // stack is in the state that the  calling convention left it.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1688
  // Copy the result from native abi result and place it on java expression stack.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1689
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1690
  // Current interpreter state is present in Lstate
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1691
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1692
  // Exception pending?
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1693
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1694
  __ ld_ptr(STATE(_frame_bottom), SP);                             // restore to full stack frame
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1695
  __ ld_ptr(exception_addr, Lscratch);                                         // get any pending exception
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1696
  __ tst(Lscratch);                                                            // exception pending?
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1697
  __ brx(Assembler::notZero, false, Assembler::pt, return_with_exception);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1698
  __ delayed()->nop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1699
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1700
  // Process the native abi result to java expression stack
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1701
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1702
  __ ld_ptr(STATE(_result._to_call._callee), L4_scratch);                        // called method
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1703
  __ ld_ptr(STATE(_stack), L1_scratch);                                          // get top of java expr stack
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1704
  __ lduh(L4_scratch, in_bytes(methodOopDesc::size_of_parameters_offset()), L2_scratch); // get parameter size
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1705
  __ sll(L2_scratch, LogBytesPerWord, L2_scratch     );                           // parameter size in bytes
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1706
  __ add(L1_scratch, L2_scratch, L1_scratch);                                      // stack destination for result
370
33ba64c16c1f 6688137: c++ interpreter fails on 64bit sparc
sgoldman
parents: 1
diff changeset
  1707
  __ ld(L4_scratch, in_bytes(methodOopDesc::result_index_offset()), L3_scratch); // called method result type index
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1708
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1709
  // tosca is really just native abi
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1710
  __ set((intptr_t)CppInterpreter::_tosca_to_stack, L4_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1711
  __ sll(L3_scratch, LogBytesPerWord, L3_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1712
  __ ld_ptr(L4_scratch, L3_scratch, Lscratch);                                       // get typed result converter address
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1713
  __ jmpl(Lscratch, G0, O7);                                                   // and convert it
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1714
  __ delayed()->nop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1715
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1716
  // L1_scratch points to top of stack (prepushed)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1717
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1718
  __ ba(false, resume_interpreter);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1719
  __ delayed()->mov(L1_scratch, O1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1720
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1721
  // An exception is being caught on return to a vanilla interpreter frame.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1722
  // Empty the stack and resume interpreter
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1723
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1724
  __ bind(return_with_exception);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1725
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1726
  __ ld_ptr(STATE(_frame_bottom), SP);                             // restore to full stack frame
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1727
  __ ld_ptr(STATE(_stack_base), O1);                               // empty java expression stack
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1728
  __ ba(false, resume_interpreter);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1729
  __ delayed()->sub(O1, wordSize, O1);                             // account for prepush
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1730
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1731
  // Return from interpreted method we return result appropriate to the caller (i.e. "recursive"
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1732
  // interpreter call, or native) and unwind this interpreter activation.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1733
  // All monitors should be unlocked.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1734
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1735
  __ bind(return_from_interpreted_method);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1736
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1737
  VALIDATE_STATE(G3_scratch, 7);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1738
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1739
  Label return_to_initial_caller;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1740
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1741
  // Interpreted result is on the top of the completed activation expression stack.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1742
  // We must return it to the top of the callers stack if caller was interpreted
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1743
  // otherwise we convert to native abi result and return to call_stub/c1/c2
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1744
  // The caller's expression stack was truncated by the call however the current activation
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1745
  // has enough stuff on the stack that we have usable space there no matter what. The
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1746
  // other thing that makes it easy is that the top of the caller's stack is stored in STATE(_locals)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1747
  // for the current activation
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1748
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1749
  __ ld_ptr(STATE(_prev_link), L1_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1750
  __ ld_ptr(STATE(_method), L2_scratch);                               // get method just executed
370
33ba64c16c1f 6688137: c++ interpreter fails on 64bit sparc
sgoldman
parents: 1
diff changeset
  1751
  __ ld(L2_scratch, in_bytes(methodOopDesc::result_index_offset()), L2_scratch);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1752
  __ tst(L1_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1753
  __ brx(Assembler::zero, false, Assembler::pt, return_to_initial_caller);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1754
  __ delayed()->sll(L2_scratch, LogBytesPerWord, L2_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1755
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1756
  // Copy result to callers java stack
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1757
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1758
  __ set((intptr_t)CppInterpreter::_stack_to_stack, L4_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1759
  __ ld_ptr(L4_scratch, L2_scratch, Lscratch);                          // get typed result converter address
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1760
  __ ld_ptr(STATE(_stack), O0);                                       // current top (prepushed)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1761
  __ ld_ptr(STATE(_locals), O1);                                      // stack destination
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1762
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1763
  // O0 - will be source, O1 - will be destination (preserved)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1764
  __ jmpl(Lscratch, G0, O7);                                          // and convert it
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1765
  __ delayed()->add(O0, wordSize, O0);                                // get source (top of current expr stack)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1766
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1767
  // O1 == &locals[0]
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1768
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1769
  // Result is now on caller's stack. Just unwind current activation and resume
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1770
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1771
  Label unwind_recursive_activation;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1772
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1773
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1774
  __ bind(unwind_recursive_activation);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1775
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1776
  // O1 == &locals[0] (really callers stacktop) for activation now returning
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1777
  // returning to interpreter method from "recursive" interpreter call
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1778
  // result converter left O1 pointing to top of the( prepushed) java stack for method we are returning
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1779
  // to. Now all we must do is unwind the state from the completed call
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1780
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1781
  // Must restore stack
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1782
  VALIDATE_STATE(G3_scratch, 8);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1783
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1784
  // Return to interpreter method after a method call (interpreted/native/c1/c2) has completed.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1785
  // Result if any is already on the caller's stack. All we must do now is remove the now dead
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1786
  // frame and tell interpreter to resume.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1787
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1788
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1789
  __ mov(O1, I1);                                                     // pass back new stack top across activation
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1790
  // POP FRAME HERE ==================================
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1791
  __ restore(FP, G0, SP);                                             // unwind interpreter state frame
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1792
  __ ld_ptr(STATE(_frame_bottom), SP);                                // restore to full stack frame
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1793
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1794
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1795
  // Resume the interpreter. The current frame contains the current interpreter
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1796
  // state object.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1797
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1798
  // O1 == new java stack pointer
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1799
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1800
  __ bind(resume_interpreter);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1801
  VALIDATE_STATE(G3_scratch, 10);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1802
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1803
  // A frame we have already used before so no need to bang stack so use call_interpreter_2 entry
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1804
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1805
  __ set((int)BytecodeInterpreter::method_resume, L1_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1806
  __ st(L1_scratch, STATE(_msg));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1807
  __ ba(false, call_interpreter_2);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1808
  __ delayed()->st_ptr(O1, STATE(_stack));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1809
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1810
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1811
  // Fast accessor methods share this entry point.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1812
  // This works because frame manager is in the same codelet
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1813
  // This can either be an entry via call_stub/c1/c2 or a recursive interpreter call
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1814
  // we need to do a little register fixup here once we distinguish the two of them
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1815
  if (UseFastAccessorMethods && !synchronized) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1816
  // Call stub_return address still in O7
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1817
    __ bind(fast_accessor_slow_entry_path);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1818
    __ set((intptr_t)return_from_native_method - 8, Gtmp1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1819
    __ cmp(Gtmp1, O7);                                                // returning to interpreter?
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1820
    __ brx(Assembler::equal, true, Assembler::pt, re_dispatch);       // yep
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1821
    __ delayed()->nop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1822
    __ ba(false, re_dispatch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1823
    __ delayed()->mov(G0, prevState);                                   // initial entry
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1824
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1825
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1826
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1827
  // interpreter returning to native code (call_stub/c1/c2)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1828
  // convert result and unwind initial activation
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1829
  // L2_scratch - scaled result type index
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1830
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1831
  __ bind(return_to_initial_caller);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1832
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1833
  __ set((intptr_t)CppInterpreter::_stack_to_native_abi, L4_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1834
  __ ld_ptr(L4_scratch, L2_scratch, Lscratch);                           // get typed result converter address
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1835
  __ ld_ptr(STATE(_stack), O0);                                        // current top (prepushed)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1836
  __ jmpl(Lscratch, G0, O7);                                           // and convert it
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1837
  __ delayed()->add(O0, wordSize, O0);                                 // get source (top of current expr stack)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1838
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1839
  Label unwind_initial_activation;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1840
  __ bind(unwind_initial_activation);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1841
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1842
  // RETURN TO CALL_STUB/C1/C2 code (result if any in I0..I1/(F0/..F1)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1843
  // we can return here with an exception that wasn't handled by interpreted code
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1844
  // how does c1/c2 see it on return?
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1845
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1846
  // compute resulting sp before/after args popped depending upon calling convention
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1847
  // __ ld_ptr(STATE(_saved_sp), Gtmp1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1848
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1849
  // POP FRAME HERE ==================================
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1850
  __ restore(FP, G0, SP);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1851
  __ retl();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1852
  __ delayed()->mov(I5_savedSP->after_restore(), SP);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1853
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1854
  // OSR request, unwind the current frame and transfer to the OSR entry
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1855
  // and enter OSR nmethod
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1856
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1857
  __ bind(do_OSR);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1858
  Label remove_initial_frame;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1859
  __ ld_ptr(STATE(_prev_link), L1_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1860
  __ ld_ptr(STATE(_result._osr._osr_buf), G1_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1861
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1862
  // We are going to pop this frame. Is there another interpreter frame underneath
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1863
  // it or is it callstub/compiled?
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1864
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1865
  __ tst(L1_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1866
  __ brx(Assembler::zero, false, Assembler::pt, remove_initial_frame);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1867
  __ delayed()->ld_ptr(STATE(_result._osr._osr_entry), G3_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1868
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1869
  // Frame underneath is an interpreter frame simply unwind
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1870
  // POP FRAME HERE ==================================
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1871
  __ restore(FP, G0, SP);                                             // unwind interpreter state frame
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1872
  __ mov(I5_savedSP->after_restore(), SP);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1873
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1874
  // Since we are now calling native need to change our "return address" from the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1875
  // dummy RecursiveInterpreterActivation to a return from native
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1876
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1877
  __ set((intptr_t)return_from_native_method - 8, O7);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1878
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1879
  __ jmpl(G3_scratch, G0, G0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1880
  __ delayed()->mov(G1_scratch, O0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1881
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1882
  __ bind(remove_initial_frame);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1883
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1884
  // POP FRAME HERE ==================================
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1885
  __ restore(FP, G0, SP);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1886
  __ mov(I5_savedSP->after_restore(), SP);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1887
  __ jmpl(G3_scratch, G0, G0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1888
  __ delayed()->mov(G1_scratch, O0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1889
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1890
  // Call a new method. All we do is (temporarily) trim the expression stack
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1891
  // push a return address to bring us back to here and leap to the new entry.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1892
  // At this point we have a topmost frame that was allocated by the frame manager
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1893
  // which contains the current method interpreted state. We trim this frame
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1894
  // of excess java expression stack entries and then recurse.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1895
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1896
  __ bind(call_method);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1897
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1898
  // stack points to next free location and not top element on expression stack
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1899
  // method expects sp to be pointing to topmost element
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1900
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1901
  __ ld_ptr(STATE(_thread), G2_thread);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1902
  __ ld_ptr(STATE(_result._to_call._callee), G5_method);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1903
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1904
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1905
  // SP already takes in to account the 2 extra words we use for slop
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1906
  // when we call a "static long no_params()" method. So if
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1907
  // we trim back sp by the amount of unused java expression stack
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1908
  // there will be automagically the 2 extra words we need.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1909
  // We also have to worry about keeping SP aligned.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1910
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1911
  __ ld_ptr(STATE(_stack), Gargs);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1912
  __ ld_ptr(STATE(_stack_limit), L1_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1913
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1914
  // compute the unused java stack size
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1915
  __ sub(Gargs, L1_scratch, L2_scratch);                       // compute unused space
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1916
370
33ba64c16c1f 6688137: c++ interpreter fails on 64bit sparc
sgoldman
parents: 1
diff changeset
  1917
  // Round down the unused space to that stack is always 16-byte aligned
33ba64c16c1f 6688137: c++ interpreter fails on 64bit sparc
sgoldman
parents: 1
diff changeset
  1918
  // by making the unused space a multiple of the size of two longs.
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1919
370
33ba64c16c1f 6688137: c++ interpreter fails on 64bit sparc
sgoldman
parents: 1
diff changeset
  1920
  __ and3(L2_scratch, -2*BytesPerLong, L2_scratch);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1921
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1922
  // Now trim the stack
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1923
  __ add(SP, L2_scratch, SP);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1924
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1925
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1926
  // Now point to the final argument (account for prepush)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1927
  __ add(Gargs, wordSize, Gargs);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1928
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1929
  // Make sure we have space for the window
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1930
  __ sub(Gargs, SP, L1_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1931
  __ cmp(L1_scratch, 16*wordSize);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1932
  {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1933
    Label skip;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1934
    __ brx(Assembler::greaterEqual, false, Assembler::pt, skip);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1935
    __ delayed()->nop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1936
    __ stop("killed stack");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1937
    __ bind(skip);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1938
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1939
#endif // ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1940
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1941
  // Create a new frame where we can store values that make it look like the interpreter
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1942
  // really recursed.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1943
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1944
  // prepare to recurse or call specialized entry
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1945
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1946
  // First link the registers we need
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1947
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1948
  // make the pc look good in debugger
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1949
  __ set(CAST_FROM_FN_PTR(intptr_t, RecursiveInterpreterActivation), O7);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1950
  // argument too
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1951
  __ mov(Lstate, I0);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1952
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1953
  // Record our sending SP
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1954
  __ mov(SP, O5_savedSP);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1955
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1956
  __ ld_ptr(STATE(_result._to_call._callee_entry_point), L2_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1957
  __ set((intptr_t) entry_point, L1_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1958
  __ cmp(L1_scratch, L2_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1959
  __ brx(Assembler::equal, false, Assembler::pt, re_dispatch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1960
  __ delayed()->mov(Lstate, prevState);                                // link activations
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1961
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1962
  // method uses specialized entry, push a return so we look like call stub setup
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1963
  // this path will handle fact that result is returned in registers and not
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1964
  // on the java stack.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1965
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1966
  __ set((intptr_t)return_from_native_method - 8, O7);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1967
  __ jmpl(L2_scratch, G0, G0);                               // Do specialized entry
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1968
  __ delayed()->nop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1969
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1970
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1971
  // Bad Message from interpreter
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1972
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1973
  __ bind(bad_msg);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1974
  __ stop("Bad message from interpreter");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1975
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1976
  // Interpreted method "returned" with an exception pass it on...
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1977
  // Pass result, unwind activation and continue/return to interpreter/call_stub
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1978
  // We handle result (if any) differently based on return to interpreter or call_stub
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1979
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1980
  __ bind(throw_exception);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1981
  __ ld_ptr(STATE(_prev_link), L1_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1982
  __ tst(L1_scratch);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1983
  __ brx(Assembler::zero, false, Assembler::pt, unwind_and_forward);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1984
  __ delayed()->nop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1985
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1986
  __ ld_ptr(STATE(_locals), O1);                                   // get result of popping callee's args
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1987
  __ ba(false, unwind_recursive_activation);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1988
  __ delayed()->nop();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1989
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1990
  interpreter_frame_manager = entry_point;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1991
  return entry_point;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1992
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1993
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1994
InterpreterGenerator::InterpreterGenerator(StubQueue* code)
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1995
 : CppInterpreterGenerator(code) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1996
   generate_all(); // down here so it can be "virtual"
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1997
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1998
489c9b5090e2 Initial load
duke
parents:
diff changeset
  1999
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2000
static int size_activation_helper(int callee_extra_locals, int max_stack, int monitor_size) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2001
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2002
  // Figure out the size of an interpreter frame (in words) given that we have a fully allocated
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2003
  // expression stack, the callee will have callee_extra_locals (so we can account for
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2004
  // frame extension) and monitor_size for monitors. Basically we need to calculate
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2005
  // this exactly like generate_fixed_frame/generate_compute_interpreter_state.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2006
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2007
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2008
  // The big complicating thing here is that we must ensure that the stack stays properly
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2009
  // aligned. This would be even uglier if monitor size wasn't modulo what the stack
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2010
  // needs to be aligned for). We are given that the sp (fp) is already aligned by
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2011
  // the caller so we must ensure that it is properly aligned for our callee.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2012
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2013
  // Ths c++ interpreter always makes sure that we have a enough extra space on the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2014
  // stack at all times to deal with the "stack long no_params()" method issue. This
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2015
  // is "slop_factor" here.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2016
  const int slop_factor = 2;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2017
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2018
  const int fixed_size = sizeof(BytecodeInterpreter)/wordSize +           // interpreter state object
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2019
                         frame::memory_parameter_word_sp_offset;   // register save area + param window
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2020
  return (round_to(max_stack +
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2021
                   slop_factor +
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2022
                   fixed_size +
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2023
                   monitor_size +
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2024
                   (callee_extra_locals * Interpreter::stackElementWords()), WordsPerLong));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2025
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2026
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2027
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2028
int AbstractInterpreter::size_top_interpreter_activation(methodOop method) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2029
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2030
  // See call_stub code
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2031
  int call_stub_size  = round_to(7 + frame::memory_parameter_word_sp_offset,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2032
                                 WordsPerLong);    // 7 + register save area
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2033
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2034
  // Save space for one monitor to get into the interpreted method in case
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2035
  // the method is synchronized
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2036
  int monitor_size    = method->is_synchronized() ?
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2037
                                1*frame::interpreter_frame_monitor_size() : 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2038
  return size_activation_helper(method->max_locals(), method->max_stack(),
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2039
                                 monitor_size) + call_stub_size;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2040
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2041
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2042
void BytecodeInterpreter::layout_interpreterState(interpreterState to_fill,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2043
                                           frame* caller,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2044
                                           frame* current,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2045
                                           methodOop method,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2046
                                           intptr_t* locals,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2047
                                           intptr_t* stack,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2048
                                           intptr_t* stack_base,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2049
                                           intptr_t* monitor_base,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2050
                                           intptr_t* frame_bottom,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2051
                                           bool is_top_frame
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2052
                                           )
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2053
{
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2054
  // What about any vtable?
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2055
  //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2056
  to_fill->_thread = JavaThread::current();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2057
  // This gets filled in later but make it something recognizable for now
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2058
  to_fill->_bcp = method->code_base();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2059
  to_fill->_locals = locals;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2060
  to_fill->_constants = method->constants()->cache();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2061
  to_fill->_method = method;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2062
  to_fill->_mdx = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2063
  to_fill->_stack = stack;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2064
  if (is_top_frame && JavaThread::current()->popframe_forcing_deopt_reexecution() ) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2065
    to_fill->_msg = deopt_resume2;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2066
  } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2067
    to_fill->_msg = method_resume;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2068
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2069
  to_fill->_result._to_call._bcp_advance = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2070
  to_fill->_result._to_call._callee_entry_point = NULL; // doesn't matter to anyone
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2071
  to_fill->_result._to_call._callee = NULL; // doesn't matter to anyone
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2072
  to_fill->_prev_link = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2073
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2074
  // Fill in the registers for the frame
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2075
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2076
  // Need to install _sender_sp. Actually not too hard in C++!
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2077
  // When the skeletal frames are layed out we fill in a value
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2078
  // for _sender_sp. That value is only correct for the oldest
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2079
  // skeletal frame constructed (because there is only a single
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2080
  // entry for "caller_adjustment". While the skeletal frames
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2081
  // exist that is good enough. We correct that calculation
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2082
  // here and get all the frames correct.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2083
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2084
  // to_fill->_sender_sp = locals - (method->size_of_parameters() - 1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2085
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2086
  *current->register_addr(Lstate) = (intptr_t) to_fill;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2087
  // skeletal already places a useful value here and this doesn't account
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2088
  // for alignment so don't bother.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2089
  // *current->register_addr(I5_savedSP) =     (intptr_t) locals - (method->size_of_parameters() - 1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2090
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2091
  if (caller->is_interpreted_frame()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2092
    interpreterState prev  = caller->get_interpreterState();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2093
    to_fill->_prev_link = prev;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2094
    // Make the prev callee look proper
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2095
    prev->_result._to_call._callee = method;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2096
    if (*prev->_bcp == Bytecodes::_invokeinterface) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2097
      prev->_result._to_call._bcp_advance = 5;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2098
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2099
      prev->_result._to_call._bcp_advance = 3;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2100
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2101
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2102
  to_fill->_oop_temp = NULL;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2103
  to_fill->_stack_base = stack_base;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2104
  // Need +1 here because stack_base points to the word just above the first expr stack entry
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2105
  // and stack_limit is supposed to point to the word just below the last expr stack entry.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2106
  // See generate_compute_interpreter_state.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2107
  to_fill->_stack_limit = stack_base - (method->max_stack() + 1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2108
  to_fill->_monitor_base = (BasicObjectLock*) monitor_base;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2109
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2110
  // sparc specific
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2111
  to_fill->_frame_bottom = frame_bottom;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2112
  to_fill->_self_link = to_fill;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2113
#ifdef ASSERT
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2114
  to_fill->_native_fresult = 123456.789;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2115
  to_fill->_native_lresult = CONST64(0xdeadcafedeafcafe);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2116
#endif
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2117
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2118
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2119
void BytecodeInterpreter::pd_layout_interpreterState(interpreterState istate, address last_Java_pc, intptr_t* last_Java_fp) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2120
  istate->_last_Java_pc = (intptr_t*) last_Java_pc;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2121
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2122
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2123
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2124
int AbstractInterpreter::layout_activation(methodOop method,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2125
                                           int tempcount, // Number of slots on java expression stack in use
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2126
                                           int popframe_extra_args,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2127
                                           int moncount,  // Number of active monitors
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2128
                                           int callee_param_size,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2129
                                           int callee_locals_size,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2130
                                           frame* caller,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2131
                                           frame* interpreter_frame,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2132
                                           bool is_top_frame) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2133
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2134
  assert(popframe_extra_args == 0, "NEED TO FIX");
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2135
  // NOTE this code must exactly mimic what InterpreterGenerator::generate_compute_interpreter_state()
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2136
  // does as far as allocating an interpreter frame.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2137
  // If interpreter_frame!=NULL, set up the method, locals, and monitors.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2138
  // The frame interpreter_frame, if not NULL, is guaranteed to be the right size,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2139
  // as determined by a previous call to this method.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2140
  // It is also guaranteed to be walkable even though it is in a skeletal state
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2141
  // NOTE: return size is in words not bytes
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2142
  // NOTE: tempcount is the current size of the java expression stack. For top most
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2143
  //       frames we will allocate a full sized expression stack and not the curback
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2144
  //       version that non-top frames have.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2145
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2146
  // Calculate the amount our frame will be adjust by the callee. For top frame
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2147
  // this is zero.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2148
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2149
  // NOTE: ia64 seems to do this wrong (or at least backwards) in that it
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2150
  // calculates the extra locals based on itself. Not what the callee does
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2151
  // to it. So it ignores last_frame_adjust value. Seems suspicious as far
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2152
  // as getting sender_sp correct.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2153
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2154
  int extra_locals_size = callee_locals_size - callee_param_size;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2155
  int monitor_size = (sizeof(BasicObjectLock) * moncount) / wordSize;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2156
  int full_frame_words = size_activation_helper(extra_locals_size, method->max_stack(), monitor_size);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2157
  int short_frame_words = size_activation_helper(extra_locals_size, method->max_stack(), monitor_size);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2158
  int frame_words = is_top_frame ? full_frame_words : short_frame_words;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2159
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2160
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2161
  /*
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2162
    if we actually have a frame to layout we must now fill in all the pieces. This means both
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2163
    the interpreterState and the registers.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2164
  */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2165
  if (interpreter_frame != NULL) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2166
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2167
    // MUCHO HACK
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2168
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2169
    intptr_t* frame_bottom = interpreter_frame->sp() - (full_frame_words - frame_words);
370
33ba64c16c1f 6688137: c++ interpreter fails on 64bit sparc
sgoldman
parents: 1
diff changeset
  2170
    // 'interpreter_frame->sp()' is unbiased while 'frame_bottom' must be a biased value in 64bit mode.
33ba64c16c1f 6688137: c++ interpreter fails on 64bit sparc
sgoldman
parents: 1
diff changeset
  2171
    assert(((intptr_t)frame_bottom & 0xf) == 0, "SP biased in layout_activation");
33ba64c16c1f 6688137: c++ interpreter fails on 64bit sparc
sgoldman
parents: 1
diff changeset
  2172
    frame_bottom = (intptr_t*)((intptr_t)frame_bottom - STACK_BIAS);
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2173
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2174
    /* Now fillin the interpreterState object */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2175
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2176
    interpreterState cur_state = (interpreterState) ((intptr_t)interpreter_frame->fp() -  sizeof(BytecodeInterpreter));
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2177
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2178
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2179
    intptr_t* locals;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2180
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2181
    // Calculate the postion of locals[0]. This is painful because of
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2182
    // stack alignment (same as ia64). The problem is that we can
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2183
    // not compute the location of locals from fp(). fp() will account
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2184
    // for the extra locals but it also accounts for aligning the stack
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2185
    // and we can't determine if the locals[0] was misaligned but max_locals
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2186
    // was enough to have the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2187
    // calculate postion of locals. fp already accounts for extra locals.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2188
    // +2 for the static long no_params() issue.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2189
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2190
    if (caller->is_interpreted_frame()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2191
      // locals must agree with the caller because it will be used to set the
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2192
      // caller's tos when we return.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2193
      interpreterState prev  = caller->get_interpreterState();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2194
      // stack() is prepushed.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2195
      locals = prev->stack() + method->size_of_parameters();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2196
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2197
      // Lay out locals block in the caller adjacent to the register window save area.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2198
      //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2199
      // Compiled frames do not allocate a varargs area which is why this if
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2200
      // statement is needed.
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2201
      //
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2202
      intptr_t* fp = interpreter_frame->fp();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2203
      int local_words = method->max_locals() * Interpreter::stackElementWords();
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2204
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2205
      if (caller->is_compiled_frame()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2206
        locals = fp + frame::register_save_words + local_words - 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2207
      } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2208
        locals = fp + frame::memory_parameter_word_sp_offset + local_words - 1;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2209
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2210
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2211
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2212
    // END MUCHO HACK
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2213
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2214
    intptr_t* monitor_base = (intptr_t*) cur_state;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2215
    intptr_t* stack_base =  monitor_base - monitor_size;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2216
    /* +1 because stack is always prepushed */
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2217
    intptr_t* stack = stack_base - (tempcount + 1);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2218
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2219
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2220
    BytecodeInterpreter::layout_interpreterState(cur_state,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2221
                                          caller,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2222
                                          interpreter_frame,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2223
                                          method,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2224
                                          locals,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2225
                                          stack,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2226
                                          stack_base,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2227
                                          monitor_base,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2228
                                          frame_bottom,
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2229
                                          is_top_frame);
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2230
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2231
    BytecodeInterpreter::pd_layout_interpreterState(cur_state, interpreter_return_address, interpreter_frame->fp());
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2232
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2233
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2234
  return frame_words;
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2235
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2236
489c9b5090e2 Initial load
duke
parents:
diff changeset
  2237
#endif // CC_INTERP