diff --git a/lldb/include/lldb/Core/Section.h b/lldb/include/lldb/Core/Section.h
--- a/lldb/include/lldb/Core/Section.h
+++ b/lldb/include/lldb/Core/Section.h
@@ -70,6 +70,10 @@
   FindSectionContainingFileAddress(lldb::addr_t addr,
                                    uint32_t depth = UINT32_MAX) const;
 
+  /// Return true iff every byte in the given range belongs to one of the
+  /// sections in this list.
+  bool ContainsFileAddressRange(lldb::addr_t addr, lldb::addr_t size) const;
+
   // Get the number of sections in this list only
   size_t GetSize() const { return m_sections.size(); }
 
diff --git a/lldb/source/Core/Section.cpp b/lldb/source/Core/Section.cpp
--- a/lldb/source/Core/Section.cpp
+++ b/lldb/source/Core/Section.cpp
@@ -563,6 +563,18 @@
   return sect_sp;
 }
 
+bool SectionList::ContainsFileAddressRange(addr_t file_addr,
+                                           addr_t size) const {
+  addr_t end = file_addr + size;
+  while (file_addr < end) {
+    SectionSP sect_sp = FindSectionContainingFileAddress(file_addr);
+    if (!sect_sp)
+      return false;
+    file_addr = sect_sp->GetFileAddress() + sect_sp->GetByteSize();
+  }
+  return true;
+}
+
 bool SectionList::ContainsSection(user_id_t sect_id) const {
   return FindSectionByID(sect_id).get() != nullptr;
 }
diff --git a/lldb/unittests/Core/CMakeLists.txt b/lldb/unittests/Core/CMakeLists.txt
--- a/lldb/unittests/Core/CMakeLists.txt
+++ b/lldb/unittests/Core/CMakeLists.txt
@@ -3,6 +3,7 @@
   MangledTest.cpp
   ModuleSpecTest.cpp
   RichManglingContextTest.cpp
+  SectionTest.cpp
   SourceManagerTest.cpp
   StreamCallbackTest.cpp
   UniqueCStringMapTest.cpp
diff --git a/lldb/unittests/Core/SectionTest.cpp b/lldb/unittests/Core/SectionTest.cpp
new file mode 100644
--- /dev/null
+++ b/lldb/unittests/Core/SectionTest.cpp
@@ -0,0 +1,67 @@
+//===-- ModuleSpecTest.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/Core/Section.h"
+#include "Plugins/ObjectFile/ELF/ObjectFileELF.h"
+#include "TestingSupport/SubsystemRAII.h"
+#include "TestingSupport/TestUtilities.h"
+#include "lldb/Core/Module.h"
+#include "gtest/gtest.h"
+
+using namespace lldb;
+using namespace lldb_private;
+
+TEST(SectionListTest, ContainsFileAddressRange) {
+  SubsystemRAII<ObjectFileELF> subsystems;
+
+  auto ExpectedFile = TestFile::fromYaml(R"(
+--- !ELF
+FileHeader:
+  Class:           ELFCLASS64
+  Data:            ELFDATA2LSB
+  Type:            ET_DYN
+  Machine:         EM_X86_64
+Sections:
+  - Name:            .foo
+    Type:            SHT_PROGBITS
+    Flags:           [ SHF_ALLOC ]
+    Address:         0x0010
+    Size:            0x0010
+  - Name:            .bar
+    Type:            SHT_PROGBITS
+    Flags:           [ SHF_ALLOC ]
+    Address:         0x0020
+    Size:            0x0010
+  - Name:            .baz
+    Type:            SHT_PROGBITS
+    Flags:           [ SHF_ALLOC ]
+    Address:         0x0031
+    Size:            0x000f
+...
+)");
+  ASSERT_THAT_EXPECTED(ExpectedFile, llvm::Succeeded());
+
+  auto M = std::make_shared<Module>(ExpectedFile->moduleSpec());
+  SectionList *List = M->GetSectionList();
+  ASSERT_TRUE(List);
+  EXPECT_TRUE(List->ContainsFileAddressRange(0x10, 0x1));
+  EXPECT_TRUE(List->ContainsFileAddressRange(0x10, 0x10));
+  EXPECT_TRUE(List->ContainsFileAddressRange(0x10, 0x11));
+  EXPECT_TRUE(List->ContainsFileAddressRange(0x10, 0x20));
+  EXPECT_FALSE(List->ContainsFileAddressRange(0x10, 0x21));
+
+  EXPECT_TRUE(List->ContainsFileAddressRange(0x08, 0x0));
+  EXPECT_FALSE(List->ContainsFileAddressRange(0x08, 0x1));
+  EXPECT_FALSE(List->ContainsFileAddressRange(0x08, 0x18));
+
+  EXPECT_TRUE(List->ContainsFileAddressRange(0x2f, 0x1));
+  EXPECT_FALSE(List->ContainsFileAddressRange(0x2f, 0x2));
+  EXPECT_FALSE(List->ContainsFileAddressRange(0x2f, 0x3));
+  EXPECT_FALSE(List->ContainsFileAddressRange(0x30, 0x3));
+  EXPECT_TRUE(List->ContainsFileAddressRange(0x31, 0x3));
+}