src/share/vm/code/compiledIC.cpp

rev 3825 : Specify offset of IC load in java_to_interp stub.

If a compiled static call calls the interpreter, it jumps past a
java_to_interp stub in the compiled code. Patching this call must
find the load of the IC. So far the shared code assumed this is the
first instruction in the stub.
This might not be the case if, for example, the base of the constant
table must be loaded.
Extend CompiledStaticCall to consider an offset from its beginning
where to search the load of the IC.

*** 559,569 ****
      tty->print_cr("CompiledStaticCall@" INTPTR_FORMAT ": set_to_interpreted %s",
                    instruction_address(),
                    callee->name_and_sig_as_C_string());
    }
  
!   NativeMovConstReg* method_holder = nativeMovConstReg_at(stub);   // creation also verifies the object
    NativeJump*        jump          = nativeJump_at(method_holder->next_instruction_address());
  
    assert(method_holder->data()    == 0           || method_holder->data()    == (intptr_t)callee(), "a) MT-unsafe modification of inline cache");
    assert(jump->jump_destination() == (address)-1 || jump->jump_destination() == entry, "b) MT-unsafe modification of inline cache");
  
--- 559,569 ----
      tty->print_cr("CompiledStaticCall@" INTPTR_FORMAT ": set_to_interpreted %s",
                    instruction_address(),
                    callee->name_and_sig_as_C_string());
    }
  
!   NativeMovConstReg* method_holder = nativeMovConstReg_at(stub + comp_to_int_load_offset);   // creation also verifies the object
    NativeJump*        jump          = nativeJump_at(method_holder->next_instruction_address());
  
    assert(method_holder->data()    == 0           || method_holder->data()    == (intptr_t)callee(), "a) MT-unsafe modification of inline cache");
    assert(jump->jump_destination() == (address)-1 || jump->jump_destination() == entry, "b) MT-unsafe modification of inline cache");
  
*** 622,632 ****
  void CompiledStaticCall::set_stub_to_clean(static_stub_Relocation* static_stub) {
    assert (CompiledIC_lock->is_locked() || SafepointSynchronize::is_at_safepoint(), "mt unsafe call");
    // Reset stub
    address stub = static_stub->addr();
    assert(stub!=NULL, "stub not found");
!   NativeMovConstReg* method_holder = nativeMovConstReg_at(stub);   // creation also verifies the object
    NativeJump*        jump          = nativeJump_at(method_holder->next_instruction_address());
    method_holder->set_data(0);
    jump->set_jump_destination((address)-1);
  }
  
--- 622,632 ----
  void CompiledStaticCall::set_stub_to_clean(static_stub_Relocation* static_stub) {
    assert (CompiledIC_lock->is_locked() || SafepointSynchronize::is_at_safepoint(), "mt unsafe call");
    // Reset stub
    address stub = static_stub->addr();
    assert(stub!=NULL, "stub not found");
!   NativeMovConstReg* method_holder = nativeMovConstReg_at(stub + comp_to_int_load_offset);   // creation also verifies the object
    NativeJump*        jump          = nativeJump_at(method_holder->next_instruction_address());
    method_holder->set_data(0);
    jump->set_jump_destination((address)-1);
  }
  
*** 701,713 ****
    }
  
    // Verify stub
    address stub = find_stub();
    assert(stub != NULL, "no stub found for static call");
!   NativeMovConstReg* method_holder = nativeMovConstReg_at(stub);   // creation also verifies the object
    NativeJump*        jump          = nativeJump_at(method_holder->next_instruction_address());
  
    // Verify state
    assert(is_clean() || is_call_to_compiled() || is_call_to_interpreted(), "sanity check");
  }
  
  #endif
--- 701,718 ----
    }
  
    // Verify stub
    address stub = find_stub();
    assert(stub != NULL, "no stub found for static call");
!   NativeMovConstReg* method_holder = nativeMovConstReg_at(stub + comp_to_int_load_offset);   // creation also verifies the object
! 
    NativeJump*        jump          = nativeJump_at(method_holder->next_instruction_address());
  
    // Verify state
    assert(is_clean() || is_call_to_compiled() || is_call_to_interpreted(), "sanity check");
  }
  
+ #endif // !PRODUCT
+ 
+ #ifndef COMPILER2
+ const int CompiledStaticCall::comp_to_int_load_offset = 0;
  #endif