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src/hotspot/cpu/aarch64/vtableStubs_aarch64.cpp
changeset 48707 a5736067e82a
parent 48701 48ce4b11bc17
child 49368 2ed1c37df3a5
equal deleted inserted replaced
48706:69d1a1590485 48707:a5736067e82a 
    61   CodeBuffer cb(s->entry_point(), aarch64_code_length);
 
    61   CodeBuffer cb(s->entry_point(), aarch64_code_length);
 
    62   MacroAssembler* masm = new MacroAssembler(&cb);
 
    62   MacroAssembler* masm = new MacroAssembler(&cb);
 
    63 
    63 
    64 #ifndef PRODUCT
 
    64 #ifndef PRODUCT
 
    65   if (CountCompiledCalls) {
 
    65   if (CountCompiledCalls) {
 
    66     __ lea(r19, ExternalAddress((address) SharedRuntime::nof_megamorphic_calls_addr()));
 
    66     __ lea(r16, ExternalAddress((address) SharedRuntime::nof_megamorphic_calls_addr()));
 
    67     __ incrementw(Address(r19));
 
    67     __ incrementw(Address(r16));
 
    68   }
 
    68   }
 
    69 #endif
 
    69 #endif
 
    70 
    70 
    71   // get receiver (need to skip return address on top of stack)
 
    71   // get receiver (need to skip return address on top of stack)
 
    72   assert(VtableStub::receiver_location() == j_rarg0->as_VMReg(), "receiver expected in j_rarg0");
 
    72   assert(VtableStub::receiver_location() == j_rarg0->as_VMReg(), "receiver expected in j_rarg0");
 
    73 
    73 
    74   // get receiver klass
 
    74   // get receiver klass
 
    75   address npe_addr = __ pc();
 
    75   address npe_addr = __ pc();
 
    76   __ load_klass(r19, j_rarg0);
 
    76   __ load_klass(r16, j_rarg0);
 
    77 
    77 
    78 #ifndef PRODUCT
 
    78 #ifndef PRODUCT
 
    79   if (DebugVtables) {
 
    79   if (DebugVtables) {
 
    80     Label L;
 
    80     Label L;
 
    81     // check offset vs vtable length
 
    81     // check offset vs vtable length
 
    82     __ ldrw(rscratch1, Address(r19, Klass::vtable_length_offset()));
 
    82     __ ldrw(rscratch1, Address(r16, Klass::vtable_length_offset()));
 
    83     __ cmpw(rscratch1, vtable_index * vtableEntry::size());
 
    83     __ cmpw(rscratch1, vtable_index * vtableEntry::size());
 
    84     __ br(Assembler::GT, L);
 
    84     __ br(Assembler::GT, L);
 
    85     __ enter();
 
    85     __ enter();
 
    86     __ mov(r2, vtable_index);
 
    86     __ mov(r2, vtable_index);
 
    87     __ call_VM(noreg,
 
    87     __ call_VM(noreg,
 
    89     __ leave();
 
    89     __ leave();
 
    90     __ bind(L);
 
    90     __ bind(L);
 
    91   }
 
    91   }
 
    92 #endif // PRODUCT
 
    92 #endif // PRODUCT
 
    93 
    93 
    94   __ lookup_virtual_method(r19, vtable_index, rmethod);
 
    94   __ lookup_virtual_method(r16, vtable_index, rmethod);
 
    95 
    95 
    96   if (DebugVtables) {
 
    96   if (DebugVtables) {
 
    97     Label L;
 
    97     Label L;
 
    98     __ cbz(rmethod, L);
 
    98     __ cbz(rmethod, L);
 
    99     __ ldr(rscratch1, Address(rmethod, Method::from_compiled_offset()));
 
    99     __ ldr(rscratch1, Address(rmethod, Method::from_compiled_offset()));
 
   143   // Entry arguments:
 
   143   // Entry arguments:
 
   144   //  rscratch2: CompiledICHolder
 
   144   //  rscratch2: CompiledICHolder
 
   145   //  j_rarg0: Receiver
 
   145   //  j_rarg0: Receiver
 
   146 
   146 
   147 
   147 
   148   // Most registers are in use; we'll use r0, rmethod, r10, r11
 
   148   // Most registers are in use; we'll use r16, rmethod, r10, r11
 
   149   const Register recv_klass_reg     = r10;
 
   149   const Register recv_klass_reg     = r10;
 
   150   const Register holder_klass_reg   = r0; // declaring interface klass (DECC)
 
   150   const Register holder_klass_reg   = r16; // declaring interface klass (DECC)
 
   151   const Register resolved_klass_reg = rmethod; // resolved interface klass (REFC)
 
   151   const Register resolved_klass_reg = rmethod; // resolved interface klass (REFC)
 
   152   const Register temp_reg           = r11;
 
   152   const Register temp_reg           = r11;
 
   153   const Register icholder_reg       = rscratch2;
 
   153   const Register icholder_reg       = rscratch2;
 
   154 
   154 
   155   Label L_no_such_interface;
 
   155   Label L_no_such_interface;
jdk-sandbox