1 files changed, 51 insertions, 0 deletions
diff --git a/contrib/llvm-project/lldb/source/Utility/AddressableBits.cpp b/contrib/llvm-project/lldb/source/Utility/AddressableBits.cpp
new file mode 100644
index 000000000000..4c98addc1f07
--- /dev/null
+++ b/contrib/llvm-project/lldb/source/Utility/AddressableBits.cpp
@@ -0,0 +1,51 @@
+//===-- AddressableBits.cpp -----------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "lldb/Utility/AddressableBits.h"
+#include "lldb/lldb-types.h"
+
+#include <cassert>
+
+using namespace lldb;
+using namespace lldb_private;
+
+void AddressableBits::SetAddressableBits(uint32_t addressing_bits) {
+  m_low_memory_addr_bits = m_high_memory_addr_bits = addressing_bits;
+}
+
+void AddressableBits::SetAddressableBits(uint32_t lowmem_addressing_bits,
+                                         uint32_t highmem_addressing_bits) {
+  m_low_memory_addr_bits = lowmem_addressing_bits;
+  m_high_memory_addr_bits = highmem_addressing_bits;
+}
+
+void AddressableBits::SetLowmemAddressableBits(
+    uint32_t lowmem_addressing_bits) {
+  m_low_memory_addr_bits = lowmem_addressing_bits;
+}
+
+uint32_t AddressableBits::GetLowmemAddressableBits() const {
+  return m_low_memory_addr_bits;
+}
+
+void AddressableBits::SetHighmemAddressableBits(
+    uint32_t highmem_addressing_bits) {
+  m_high_memory_addr_bits = highmem_addressing_bits;
+}
+
+uint32_t AddressableBits::GetHighmemAddressableBits() const {
+  return m_high_memory_addr_bits;
+}
+
+addr_t AddressableBits::AddressableBitToMask(uint32_t addressable_bits) {
+  assert(addressable_bits <= sizeof(addr_t) * 8);
+  if (addressable_bits == 64)
+    return 0; // all bits used for addressing
+  else
+    return ~((1ULL << addressable_bits) - 1);
+}