| /* |
| * Copyright (c) 2021, 2025, Oracle and/or its affiliates. All rights reserved. |
| * Copyright (c) 2021, Arm Limited. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| #include "runtime/registerMap.hpp" |
| #include "vmreg_aarch64.inline.hpp" |
| |
| address RegisterMap::pd_location(VMReg base_reg, int slot_idx) const { |
| if (base_reg->is_FloatRegister()) { |
| // Not all physical slots of an SVE register have corresponding |
| // VMRegs. However they are always saved to the stack in a |
| // contiguous region of memory so we can calculate the address of |
| // the upper slots by offsetting from the base address. |
| assert(base_reg->is_concrete(), "must pass base reg"); |
| int base_reg_enc = (base_reg->value() - ConcreteRegisterImpl::max_gpr) / |
| FloatRegister::max_slots_per_register; |
| intptr_t offset_in_bytes = slot_idx * VMRegImpl::stack_slot_size; |
| address base_location = location(base_reg, nullptr); |
| if (base_location != nullptr) { |
| return base_location + offset_in_bytes; |
| } else { |
| return nullptr; |
| } |
| } else { |
| return location(base_reg->next(slot_idx), nullptr); |
| } |
| } |
