lldb/source/Utility/AddressableBits.cpp

   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/Target/Process.h"
  11 #include "lldb/lldb-types.h"
  12
  13 using namespace lldb;
  14 using namespace lldb_private;
  15
  16 void AddressableBits::SetAddressableBits(uint32_t addressing_bits) {
  17   m_low_memory_addr_bits = m_high_memory_addr_bits = addressing_bits;
  18 }
  19
  20 void AddressableBits::SetAddressableBits(uint32_t lowmem_addressing_bits,
  21                                          uint32_t highmem_addressing_bits) {
  22   m_low_memory_addr_bits = lowmem_addressing_bits;
  23   m_high_memory_addr_bits = highmem_addressing_bits;
  24 }
  25
  26 void AddressableBits::SetLowmemAddressableBits(
  27     uint32_t lowmem_addressing_bits) {
  28   m_low_memory_addr_bits = lowmem_addressing_bits;
  29 }
  30
  31 void AddressableBits::SetHighmemAddressableBits(
  32     uint32_t highmem_addressing_bits) {
  33   m_high_memory_addr_bits = highmem_addressing_bits;
  34 }
  35
  36 void AddressableBits::SetProcessMasks(Process &process) {
  37   if (m_low_memory_addr_bits == 0 && m_high_memory_addr_bits == 0)
  38     return;
  39
  40   if (m_low_memory_addr_bits != 0) {
  41     addr_t low_addr_mask = ~((1ULL << m_low_memory_addr_bits) - 1);
  42     process.SetCodeAddressMask(low_addr_mask);
  43     process.SetDataAddressMask(low_addr_mask);
  44   }
  45
  46   if (m_high_memory_addr_bits != 0) {
  47     addr_t hi_addr_mask = ~((1ULL << m_high_memory_addr_bits) - 1);
  48     process.SetHighmemCodeAddressMask(hi_addr_mask);
  49     process.SetHighmemDataAddressMask(hi_addr_mask);
  50   }
  51 }