inline void MacroAssembler::jump_indirect_to(Address& a, Register temp,
                                             int ld_offset, int jmp_offset) {
  assert_not_delayed();
  //sethi(al);                   // sethi is caller responsibility for this one
  ld_ptr(a, temp, ld_offset);
  jmp(temp, jmp_offset);
}
// This code sequence is relocatable to any address, even on LP64.
inline void MacroAssembler::jumpl_to(const AddressLiteral& addrlit, Register temp, Register d, int offset) {
  assert_not_delayed();
  // Force fixed length sethi because NativeJump and NativeFarCall don't handle
  // variable length instruction streams.
  patchable_sethi(addrlit, temp);
  jmpl(temp, addrlit.low10() + offset, d);
}
inline void MacroAssembler::store_ptr_contents(Register s, const AddressLiteral& addrlit, Register temp, int offset) {
  assert_not_delayed();
  if (ForceUnreachable) {
    patchable_sethi(addrlit, temp);
  } else {
    sethi(addrlit, temp);
  }
  st_ptr(s, temp, addrlit.low10() + offset);
}
inline void MacroAssembler::load_ptr_contents(const AddressLiteral& addrlit, Register d, int offset) {
  assert_not_delayed();
  if (ForceUnreachable) {
    patchable_sethi(addrlit, d);
  } else {
    sethi(addrlit, d);
  }
  ld_ptr(d, addrlit.low10() + offset, d);
}
Example #5
0
int StubAssembler::call_RT(Register oop_result1, Register metadata_result, address entry_point, int number_of_arguments) {
  // for sparc changing the number of arguments doesn't change
  // anything about the frame size so we'll always lie and claim that
  // we are only passing 1 argument.
  set_num_rt_args(1);

  assert_not_delayed();
  // bang stack before going to runtime
  set(-os::vm_page_size() + STACK_BIAS, G3_scratch);
  st(G0, SP, G3_scratch);

  // debugging support
  assert(number_of_arguments >= 0   , "cannot have negative number of arguments");

  set_last_Java_frame(SP, noreg);
  if (VerifyThread)  mov(G2_thread, O0); // about to be smashed; pass early
  save_thread(L7_thread_cache);
  // do the call
  call(entry_point, relocInfo::runtime_call_type);
  if (!VerifyThread) {
    delayed()->mov(G2_thread, O0);  // pass thread as first argument
  } else {
    delayed()->nop();             // (thread already passed)
  }
  int call_offset = offset();  // offset of return address
  restore_thread(L7_thread_cache);
  reset_last_Java_frame();

  // check for pending exceptions
  { Label L;
    Address exception_addr(G2_thread, Thread::pending_exception_offset());
    ld_ptr(exception_addr, Gtemp);
    br_null_short(Gtemp, pt, L);
    Address vm_result_addr(G2_thread, JavaThread::vm_result_offset());
    st_ptr(G0, vm_result_addr);
    Address vm_result_addr_2(G2_thread, JavaThread::vm_result_2_offset());
    st_ptr(G0, vm_result_addr_2);

    if (frame_size() == no_frame_size) {
      // we use O7 linkage so that forward_exception_entry has the issuing PC
      call(StubRoutines::forward_exception_entry(), relocInfo::runtime_call_type);
      delayed()->restore();
    } else if (_stub_id == Runtime1::forward_exception_id) {
      should_not_reach_here();
    } else {
      AddressLiteral exc(Runtime1::entry_for(Runtime1::forward_exception_id));
      jump_to(exc, G4);
      delayed()->nop();
    }
    bind(L);
  }

  // get oop result if there is one and reset the value in the thread
  if (oop_result1->is_valid()) {                    // get oop result if there is one and reset it in the thread
    get_vm_result  (oop_result1);
  } else {
    // be a little paranoid and clear the result
    Address vm_result_addr(G2_thread, JavaThread::vm_result_offset());
    st_ptr(G0, vm_result_addr);
  }

  // get second result if there is one and reset the value in the thread
  if (metadata_result->is_valid()) {
    get_vm_result_2  (metadata_result);
  } else {
    // be a little paranoid and clear the result
    Address vm_result_addr_2(G2_thread, JavaThread::vm_result_2_offset());
    st_ptr(G0, vm_result_addr_2);
  }

  return call_offset;
}