| 1 | //===-- AddressableBits.cpp -----------------------------------------------===// |
|---|---|
| 2 | // |
| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 4 | // See https://llvm.org/LICENSE.txt for license information. |
| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | |
| 9 | #include "lldb/Utility/AddressableBits.h" |
| 10 | #include "lldb/lldb-types.h" |
| 11 | |
| 12 | #include <cassert> |
| 13 | |
| 14 | using namespace lldb; |
| 15 | using namespace lldb_private; |
| 16 | |
| 17 | void AddressableBits::SetAddressableBits(uint32_t addressing_bits) { |
| 18 | m_low_memory_addr_bits = m_high_memory_addr_bits = addressing_bits; |
| 19 | } |
| 20 | |
| 21 | void AddressableBits::SetAddressableBits(uint32_t lowmem_addressing_bits, |
| 22 | uint32_t highmem_addressing_bits) { |
| 23 | m_low_memory_addr_bits = lowmem_addressing_bits; |
| 24 | m_high_memory_addr_bits = highmem_addressing_bits; |
| 25 | } |
| 26 | |
| 27 | void AddressableBits::SetLowmemAddressableBits( |
| 28 | uint32_t lowmem_addressing_bits) { |
| 29 | m_low_memory_addr_bits = lowmem_addressing_bits; |
| 30 | } |
| 31 | |
| 32 | uint32_t AddressableBits::GetLowmemAddressableBits() const { |
| 33 | return m_low_memory_addr_bits; |
| 34 | } |
| 35 | |
| 36 | void AddressableBits::SetHighmemAddressableBits( |
| 37 | uint32_t highmem_addressing_bits) { |
| 38 | m_high_memory_addr_bits = highmem_addressing_bits; |
| 39 | } |
| 40 | |
| 41 | uint32_t AddressableBits::GetHighmemAddressableBits() const { |
| 42 | return m_high_memory_addr_bits; |
| 43 | } |
| 44 | |
| 45 | addr_t AddressableBits::AddressableBitToMask(uint32_t addressable_bits) { |
| 46 | assert(addressable_bits <= sizeof(addr_t) * 8); |
| 47 | if (addressable_bits == 64) |
| 48 | return 0; // all bits used for addressing |
| 49 | else |
| 50 | return ~((1ULL << addressable_bits) - 1); |
| 51 | } |
| 52 |