1 //===-- AddressableBits.h ---------------------------------------*- C++ -*-===//
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 #ifndef LLDB_UTILITY_ADDRESSABLEBITS_H
10 #define LLDB_UTILITY_ADDRESSABLEBITS_H
11 
12 #include "lldb/lldb-forward.h"
13 #include "lldb/lldb-public.h"
14 
15 namespace lldb_private {
16 
17 /// \class AddressableBits AddressableBits.h "lldb/Core/AddressableBits.h"
18 /// A class which holds the metadata from a remote stub/corefile note
19 /// about how many bits are used for addressing on this target.
20 ///
21 class AddressableBits {
22 public:
AddressableBits()23   AddressableBits() : m_low_memory_addr_bits(0), m_high_memory_addr_bits(0) {}
24 
25   /// When a single value is available for the number of bits.
26   void SetAddressableBits(uint32_t addressing_bits);
27 
28   /// When we have separate values for low memory addresses and high memory
29   /// addresses.
30   void SetAddressableBits(uint32_t lowmem_addressing_bits,
31                           uint32_t highmem_addressing_bits);
32 
33   void SetLowmemAddressableBits(uint32_t lowmem_addressing_bits);
34 
35   void SetHighmemAddressableBits(uint32_t highmem_addressing_bits);
36 
37   static lldb::addr_t AddressableBitToMask(uint32_t addressable_bits);
38 
39   void SetProcessMasks(lldb_private::Process &process);
40 
41 private:
42   uint32_t m_low_memory_addr_bits;
43   uint32_t m_high_memory_addr_bits;
44 };
45 
46 } // namespace lldb_private
47 
48 #endif // LLDB_UTILITY_ADDRESSABLEBITS_H
49