1 /*
   2  * Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved.
   3  * Copyright (c) 2012, 2015 SAP SE. All rights reserved.
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   6  * This code is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License version 2 only, as
   8  * published by the Free Software Foundation.
   9  *
  10  * This code is distributed in the hope that it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  13  * version 2 for more details (a copy is included in the LICENSE file that
  14  * accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License version
  17  * 2 along with this work; if not, write to the Free Software Foundation,
  18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  19  *
  20  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  21  * or visit www.oracle.com if you need additional information or have any
  22  * questions.
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  24  */
  25 
  26 #ifndef CPU_PPC_VM_C1_LIRASSEMBLER_PPC_HPP
  27 #define CPU_PPC_VM_C1_LIRASSEMBLER_PPC_HPP
  28 
  29  private:
  30 
  31   //////////////////////////////////////////////////////////////////////////////
  32   // PPC64 load/store emission
  33   //
  34   // The PPC ld/st instructions cannot accomodate displacements > 16 bits long.
  35   // The following "pseudo" instructions (load/store) make it easier to
  36   // use the indexed addressing mode by allowing 32 bit displacements:
  37   //
  38 
  39   void explicit_null_check(Register addr, CodeEmitInfo* info);
  40 
  41   int store(LIR_Opr from_reg, Register base, int offset, BasicType type, bool wide, bool unaligned);
  42   int store(LIR_Opr from_reg, Register base, Register disp, BasicType type, bool wide);
  43 
  44   int load(Register base, int offset, LIR_Opr to_reg, BasicType type, bool wide, bool unaligned);
  45   int load(Register base, Register disp, LIR_Opr to_reg, BasicType type, bool wide);
  46 
  47   int shift_amount(BasicType t);
  48 
  49   // Record the type of the receiver in ReceiverTypeData.
  50   void type_profile_helper(Register mdo, int mdo_offset_bias,
  51                            ciMethodData *md, ciProfileData *data,
  52                            Register recv, Register tmp1, Label* update_done);
  53   // Setup pointers to MDO, MDO slot, also compute offset bias to access the slot.
  54   void setup_md_access(ciMethod* method, int bci,
  55                        ciMethodData*& md, ciProfileData*& data, int& mdo_offset_bias);
  56  public:
  57   static const ConditionRegister BOOL_RESULT;
  58 
  59   // Emit trampoline stub for call. Call bailout() if failed. Return true on success.
  60   bool emit_trampoline_stub_for_call(address target, Register Rtoc = noreg);
  61 
  62 enum {
  63   _static_call_stub_size = 4 * BytesPerInstWord + MacroAssembler::b64_patchable_size, // or smaller
  64   _call_stub_size = _static_call_stub_size + MacroAssembler::trampoline_stub_size, // or smaller
  65   _call_aot_stub_size = 0,
  66   _exception_handler_size = MacroAssembler::b64_patchable_size, // or smaller
  67   _deopt_handler_size = MacroAssembler::bl64_patchable_size
  68 };
  69 
  70   // '_static_call_stub_size' is only used on ppc (see LIR_Assembler::emit_static_call_stub()
  71   // in c1_LIRAssembler_ppc.cpp. The other, shared getters are defined in c1_LIRAssembler.hpp
  72   static int static_call_stub_size() {
  73     if (UseAOT) {
  74       return _static_call_stub_size + _call_aot_stub_size;
  75     } else {
  76       return _static_call_stub_size;
  77     }
  78   }
  79 
  80 #endif // CPU_PPC_VM_C1_LIRASSEMBLER_PPC_HPP