diff --git a/llvm/test/tools/llvm-readobj/MachO/flags.yaml b/llvm/test/tools/llvm-readobj/MachO/flags.yaml
new file mode 100644
--- /dev/null
+++ b/llvm/test/tools/llvm-readobj/MachO/flags.yaml
@@ -0,0 +1,74 @@
+## Verify that llvm-readobj can dump the various symbol flags correctly.
+# RUN: yaml2obj %s -o %t
+# RUN: llvm-readobj --syms %t | FileCheck %s
+
+# CHECK:      Symbols [
+# CHECK-NEXT:   Symbol {
+# CHECK-NEXT:     Name: _foo (1)
+# CHECK-NEXT:     Extern
+# CHECK-NEXT:     Type: Section (0xE)
+# CHECK-NEXT:     Section: __text (0x1)
+# CHECK-NEXT:     RefType: UndefinedNonLazy (0x0)
+# CHECK-NEXT:     Flags [ (0x128)
+# CHECK-NEXT:       NoDeadStrip (0x20)
+# CHECK-NEXT:       SymbolResolver (0x100)
+# CHECK-NEXT:       ThumbDef (0x8)
+# CHECK-NEXT:     ]
+# CHECK-NEXT:     Value: 0x0
+# CHECK-NEXT:   }
+# CHECK-NEXT: ]
+
+--- !mach-o
+FileHeader:
+  magic:           0xFEEDFACE
+  cputype:         0xC
+  cpusubtype:      0x9
+  filetype:        0x1
+  ncmds:           2
+  sizeofcmds:      228
+  flags:           0x0
+LoadCommands:
+  - cmd:             LC_SEGMENT
+    cmdsize:         124
+    segname:         ''
+    vmaddr:          0
+    vmsize:          0
+    fileoff:         256
+    filesize:        0
+    maxprot:         7
+    initprot:        7
+    nsects:          1
+    flags:           0
+    Sections:
+      - sectname:        __text
+        segname:         __TEXT
+        addr:            0x0
+        size:            0
+        offset:          0x100
+        align:           2
+        reloff:          0x0
+        nreloc:          0
+        flags:           0x80000000
+        reserved1:       0x0
+        reserved2:       0x0
+        reserved3:       0x0
+        content:         ''
+  - cmd:             LC_SYMTAB
+    cmdsize:         24
+    symoff:          256
+    nsyms:           1
+    stroff:          268
+    strsize:         8
+LinkEditData:
+  NameList:
+    - n_strx:          1
+      n_type:          0xF
+      n_sect:          1
+      n_desc:          296
+      n_value:         0
+  StringTable:
+    - ''
+    - _foo
+    - ''
+    - ''
+...
diff --git a/llvm/tools/llvm-readobj/MachODumper.cpp b/llvm/tools/llvm-readobj/MachODumper.cpp
--- a/llvm/tools/llvm-readobj/MachODumper.cpp
+++ b/llvm/tools/llvm-readobj/MachODumper.cpp
@@ -256,11 +256,10 @@
 };
 
 static const EnumEntry<unsigned> MachOSymbolFlags[] = {
-  { "ReferencedDynamically", 0x10 },
-  { "NoDeadStrip",           0x20 },
-  { "WeakRef",               0x40 },
-  { "WeakDef",               0x80 },
-  { "AltEntry",             0x200 },
+    {"ThumbDef", 0x8},     {"ReferencedDynamically", 0x10},
+    {"NoDeadStrip", 0x20}, {"WeakRef", 0x40},
+    {"WeakDef", 0x80},     {"SymbolResolver", 0x100},
+    {"AltEntry", 0x200},   {"ColdFunc", 0x400},
 };
 
 static const EnumEntry<unsigned> MachOSymbolTypes[] = {
@@ -651,9 +650,9 @@
                 makeArrayRef(MachOSymbolTypes));
   }
   W.printHex("Section", SectionName, MOSymbol.SectionIndex);
-  W.printEnum("RefType", static_cast<uint16_t>(MOSymbol.Flags & 0xF),
+  W.printEnum("RefType", static_cast<uint16_t>(MOSymbol.Flags & 0x7),
               makeArrayRef(MachOSymbolRefTypes));
-  W.printFlags("Flags", static_cast<uint16_t>(MOSymbol.Flags & ~0xF),
+  W.printFlags("Flags", static_cast<uint16_t>(MOSymbol.Flags & ~0x7),
                makeArrayRef(MachOSymbolFlags));
   W.printHex("Value", MOSymbol.Value);
 }