1 /*
   2  * Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #ifndef SHARE_C1_C1_MACROASSEMBLER_HPP
  26 #define SHARE_C1_C1_MACROASSEMBLER_HPP
  27 
  28 #include "asm/macroAssembler.hpp"
  29 #include "utilities/macros.hpp"
  30 
  31 class CodeEmitInfo;
  32 class CompiledEntrySignature;
  33 class C1_MacroAssembler: public MacroAssembler {
  34  private:
  35   int scalarized_entry(const CompiledEntrySignature *ces, int frame_size_in_bytes, int bang_size_in_bytes, Label& verified_value_entry_label, bool is_value_ro_entry);
  36  public:
  37   // creation
  38   C1_MacroAssembler(CodeBuffer* code) : MacroAssembler(code) { pd_init(); }
  39 
  40   //----------------------------------------------------
  41   void explicit_null_check(Register base);
  42 
  43   void inline_cache_check(Register receiver, Register iCache);
  44   void build_frame(int frame_size_in_bytes, int bang_size_in_bytes, bool needs_stack_repair, Label* verified_value_entry_label);
  45   void remove_frame(int frame_size_in_bytes, bool needs_stack_repair);
  46 
  47   int verified_entry(const CompiledEntrySignature *ces, int frame_size_in_bytes, int bang_size_in_bytes, Label& verified_value_entry_label) {
  48     return scalarized_entry(ces, frame_size_in_bytes, bang_size_in_bytes, verified_value_entry_label, false);
  49   }
  50   int verified_value_ro_entry(const CompiledEntrySignature *ces, int frame_size_in_bytes, int bang_size_in_bytes, Label& verified_value_entry_label) {
  51     return scalarized_entry(ces, frame_size_in_bytes, bang_size_in_bytes, verified_value_entry_label, true);
  52   }
  53   void verified_value_entry();
  54   void verify_stack_oop(int offset) PRODUCT_RETURN;
  55   void verify_not_null_oop(Register r)  PRODUCT_RETURN;
  56 
  57 #include CPU_HEADER(c1_MacroAssembler)
  58 
  59 };
  60 
  61 
  62 
  63 // A StubAssembler is a MacroAssembler w/ extra functionality for runtime
  64 // stubs. Currently it 'knows' some stub info. Eventually, the information
  65 // may be set automatically or can be asserted when using specialised
  66 // StubAssembler functions.
  67 
  68 class StubAssembler: public C1_MacroAssembler {
  69  private:
  70   const char* _name;
  71   bool        _must_gc_arguments;
  72   int         _frame_size;
  73   int         _num_rt_args;
  74   int         _stub_id;
  75 
  76  public:
  77   // creation
  78   StubAssembler(CodeBuffer* code, const char * name, int stub_id);
  79   void set_info(const char* name, bool must_gc_arguments);
  80 
  81   void set_frame_size(int size);
  82   void set_num_rt_args(int args);
  83 
  84   void save_live_registers();
  85   void restore_live_registers_without_return();
  86 
  87   // accessors
  88   const char* name() const                       { return _name; }
  89   bool  must_gc_arguments() const                { return _must_gc_arguments; }
  90   int frame_size() const                         { return _frame_size; }
  91   int num_rt_args() const                        { return _num_rt_args; }
  92   int stub_id() const                            { return _stub_id; }
  93 
  94   // runtime calls (return offset of call to be used by GC map)
  95   int call_RT(Register oop_result1, Register metadata_result, address entry, int args_size = 0);
  96   int call_RT(Register oop_result1, Register metadata_result, address entry, Register arg1);
  97   int call_RT(Register oop_result1, Register metadata_result, address entry, Register arg1, Register arg2);
  98   int call_RT(Register oop_result1, Register metadata_result, address entry, Register arg1, Register arg2, Register arg3);
  99 
 100   void prologue(const char* name, bool must_gc_arguments);
 101   void epilogue();
 102 };
 103 
 104 #endif // SHARE_C1_C1_MACROASSEMBLER_HPP