Пример #1
0
static OopMap* generate_oop_map(StubAssembler* sasm, bool save_fpu_registers) {
  assert(frame_size_in_bytes == __ total_frame_size_in_bytes(reg_save_size_in_words),
         "mismatch in calculation");
  sasm->set_frame_size(frame_size_in_bytes / BytesPerWord);
  int frame_size_in_slots = frame_size_in_bytes / sizeof(jint);
  OopMap* oop_map = new OopMap(frame_size_in_slots, 0);

  int i;
  for (i = 0; i < FrameMap::nof_cpu_regs; i++) {
    Register r = as_Register(i);
    if (r == G1 || r == G3 || r == G4 || r == G5) {
      int sp_offset = cpu_reg_save_offsets[i];
      oop_map->set_callee_saved(VMRegImpl::stack2reg(sp_offset),
                                r->as_VMReg());
    }
  }

  if (save_fpu_registers) {
    for (i = 0; i < FrameMap::nof_fpu_regs; i++) {
      FloatRegister r = as_FloatRegister(i);
      int sp_offset = fpu_reg_save_offsets[i];
      oop_map->set_callee_saved(VMRegImpl::stack2reg(sp_offset),
                                r->as_VMReg());
    }
  }
  return oop_map;
}