1 /*
   2  * Copyright (c) 2011, 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 #ifndef SHARE_JVMCI_JVMCICOMPILERTOVM_HPP
  25 #define SHARE_JVMCI_JVMCICOMPILERTOVM_HPP
  26 
  27 #include "gc/shared/cardTable.hpp"
  28 #include "jvmci/jvmciExceptions.hpp"
  29 #include "runtime/javaCalls.hpp"
  30 #include "runtime/signature.hpp"
  31 
  32 class JVMCIObjectArray;
  33 
  34 class CompilerToVM {
  35  public:
  36   class Data {
  37     friend class JVMCIVMStructs;
  38 
  39    private:
  40     static int Klass_vtable_start_offset;
  41     static int Klass_vtable_length_offset;
  42 
  43     static int Method_extra_stack_entries;
  44 
  45     static address SharedRuntime_ic_miss_stub;
  46     static address SharedRuntime_handle_wrong_method_stub;
  47     static address SharedRuntime_deopt_blob_unpack;
  48     static address SharedRuntime_deopt_blob_uncommon_trap;
  49 
  50     static size_t ThreadLocalAllocBuffer_alignment_reserve;
  51 
  52     static CollectedHeap* Universe_collectedHeap;
  53     static int Universe_base_vtable_size;
  54     static address Universe_narrow_oop_base;
  55     static int Universe_narrow_oop_shift;
  56     static address Universe_narrow_klass_base;
  57     static int Universe_narrow_klass_shift;
  58     static uintptr_t Universe_verify_oop_mask;
  59     static uintptr_t Universe_verify_oop_bits;
  60     static void* Universe_non_oop_bits;
  61 
  62     static bool _supports_inline_contig_alloc;
  63     static HeapWord** _heap_end_addr;
  64     static HeapWord* volatile* _heap_top_addr;
  65     static int _max_oop_map_stack_offset;
  66     static int _fields_annotations_base_offset;
  67 
  68     static CardTable::CardValue* cardtable_start_address;
  69     static int cardtable_shift;
  70 
  71     static int vm_page_size;
  72 
  73     static int sizeof_vtableEntry;
  74     static int sizeof_ExceptionTableElement;
  75     static int sizeof_LocalVariableTableElement;
  76     static int sizeof_ConstantPool;
  77     static int sizeof_narrowKlass;
  78     static int sizeof_arrayOopDesc;
  79     static int sizeof_BasicLock;
  80 
  81     static address dsin;
  82     static address dcos;
  83     static address dtan;
  84     static address dexp;
  85     static address dlog;
  86     static address dlog10;
  87     static address dpow;
  88 
  89     static address symbol_init;
  90     static address symbol_clinit;
  91 
  92    public:
  93      static void initialize(JVMCI_TRAPS);
  94 
  95     static int max_oop_map_stack_offset() {
  96       assert(_max_oop_map_stack_offset > 0, "must be initialized");
  97       return Data::_max_oop_map_stack_offset;
  98     }
  99   };
 100 
 101   static bool cstring_equals(const char* const& s0, const char* const& s1) {
 102     return strcmp(s0, s1) == 0;
 103   }
 104 
 105   static unsigned cstring_hash(const char* const& s) {
 106     int h = 0;
 107     const char* p = s;
 108     while (*p != '\0') {
 109       h = 31 * h + *p;
 110       p++;
 111     }
 112     return h;
 113   }
 114 
 115   static JNINativeMethod methods[];
 116   static JNINativeMethod jni_methods[];
 117 
 118   static JVMCIObjectArray initialize_intrinsics(JVMCI_TRAPS);
 119  public:
 120   static int methods_count();
 121 
 122 };
 123 
 124 
 125 class JavaArgumentUnboxer : public SignatureIterator {
 126  protected:
 127   JavaCallArguments*  _jca;
 128   arrayOop _args;
 129   int _index;
 130 
 131   Handle next_arg(BasicType expectedType);
 132 
 133  public:
 134   JavaArgumentUnboxer(Symbol* signature, JavaCallArguments*  jca, arrayOop args, bool is_static) : SignatureIterator(signature) {
 135     this->_return_type = T_ILLEGAL;
 136     _jca = jca;
 137     _index = 0;
 138     _args = args;
 139     if (!is_static) {
 140       _jca->push_oop(next_arg(T_OBJECT));
 141     }
 142     iterate();
 143     assert(_index == args->length(), "arg count mismatch with signature");
 144   }
 145 
 146   inline void do_bool()   { if (!is_return_type()) _jca->push_int(next_arg(T_BOOLEAN)->bool_field(java_lang_boxing_object::value_offset_in_bytes(T_BOOLEAN))); }
 147   inline void do_char()   { if (!is_return_type()) _jca->push_int(next_arg(T_CHAR)->char_field(java_lang_boxing_object::value_offset_in_bytes(T_CHAR))); }
 148   inline void do_short()  { if (!is_return_type()) _jca->push_int(next_arg(T_SHORT)->short_field(java_lang_boxing_object::value_offset_in_bytes(T_SHORT))); }
 149   inline void do_byte()   { if (!is_return_type()) _jca->push_int(next_arg(T_BYTE)->byte_field(java_lang_boxing_object::value_offset_in_bytes(T_BYTE))); }
 150   inline void do_int()    { if (!is_return_type()) _jca->push_int(next_arg(T_INT)->int_field(java_lang_boxing_object::value_offset_in_bytes(T_INT))); }
 151 
 152   inline void do_long()   { if (!is_return_type()) _jca->push_long(next_arg(T_LONG)->long_field(java_lang_boxing_object::value_offset_in_bytes(T_LONG))); }
 153   inline void do_float()  { if (!is_return_type()) _jca->push_float(next_arg(T_FLOAT)->float_field(java_lang_boxing_object::value_offset_in_bytes(T_FLOAT))); }
 154   inline void do_double() { if (!is_return_type()) _jca->push_double(next_arg(T_DOUBLE)->double_field(java_lang_boxing_object::value_offset_in_bytes(T_DOUBLE))); }
 155 
 156   inline void do_object() { _jca->push_oop(next_arg(T_OBJECT)); }
 157   inline void do_object(int begin, int end) { if (!is_return_type()) _jca->push_oop(next_arg(T_OBJECT)); }
 158   inline void do_valuetype(int begin, int end) { if (!is_return_type()) _jca->push_oop(next_arg(T_VALUETYPE)); }
 159   inline void do_array(int begin, int end)  { if (!is_return_type()) _jca->push_oop(next_arg(T_OBJECT)); }
 160   inline void do_void()                     { }
 161 };
 162 
 163 class JNIHandleMark : public StackObj {
 164   JavaThread* _thread;
 165   public:
 166     JNIHandleMark(JavaThread* thread) : _thread(thread) { push_jni_handle_block(thread); }
 167     ~JNIHandleMark() { pop_jni_handle_block(_thread); }
 168 
 169   private:
 170     static void push_jni_handle_block(JavaThread* thread);
 171     static void pop_jni_handle_block(JavaThread* thread);
 172 };
 173 
 174 #endif // SHARE_JVMCI_JVMCICOMPILERTOVM_HPP