[llvm-objdump] Print the DEBUG type under --section-headers.

Summary: Under the option --section-headers, we can only
print the section types of TEXT, DATA, and BSS for now.
This patch adds the DEBUG type.

Reviewed By: jhenderson, Higuoxing

Differential Revision: https://reviews.llvm.org/D102603

Author: Esme-Yi

llvm/test/tools/llvm-objdump/section-headers.test

@@ -15,6 +15,8 @@
 # WHITESPACE-NEXT: {{^}}  2 .data         00000000 0000000000000000 0000000000000000 DATA{{$}}
 # WHITESPACE-NEXT: {{^}}  3 .bss          00000000 0000000000000000 0000000000000000 BSS{{$}}
 # WHITESPACE-NEXT: {{^}}  4 .other        00000000 0000000000000000 0000000000000000 {{$}}
+# WHITESPACE-NEXT: {{^}}  5 .debug_abbrev 00000000 0000000000000000 0000000000000000 DEBUG{{$}}
+# WHITESPACE-NEXT: {{^}}  6 .debug_info   00000000 0000000000000000 0000000000000000 DATA, DEBUG{{$}}
 
 # WHITESPACE-NO-LMA:      {{^}}Sections:{{$}}
 # WHITESPACE-NO-LMA-NEXT: {{^}}Idx Name          Size     VMA              Type{{$}}
@@ -23,6 +25,8 @@
 # WHITESPACE-NO-LMA-NEXT: {{^}}  2 .data         00000000 0000000000000000 DATA{{$}}
 # WHITESPACE-NO-LMA-NEXT: {{^}}  3 .bss          00000000 0000000000000000 BSS{{$}}
 # WHITESPACE-NO-LMA-NEXT: {{^}}  4 .other        00000000 0000000000000000 {{$}}
+# WHITESPACE-NO-LMA-NEXT: {{^}}  5 .debug_abbrev 00000000 0000000000000000 DEBUG{{$}}
+# WHITESPACE-NO-LMA-NEXT: {{^}}  6 .debug_info   00000000 0000000000000000 DATA, DEBUG{{$}}
 
 --- !ELF
 FileHeader:
@@ -42,6 +46,11 @@ Sections:
     Flags: [SHF_ALLOC, SHF_WRITE]
   - Name:  .other
     Type:  SHT_REL
+  - Name:  .debug_abbrev
+    Type:  SHT_PROGBITS
+  - Name:  .debug_info
+    Type:  SHT_PROGBITS
+    Flags: [ SHF_WRITE, SHF_ALLOC ]
 
 ## The name field automatically expands past the default 13 columns when a
 ## section name is longer than that.

llvm/tools/llvm-objdump/llvm-objdump.cpp

@@ -1764,9 +1764,11 @@ void objdump::printSectionHeaders(const ObjectFile *Obj) {
 
     std::string Type = Section.isText() ? "TEXT" : "";
     if (Section.isData())
-      Type += Type.empty() ? "DATA" : " DATA";
+      Type += Type.empty() ? "DATA" : ", DATA";
     if (Section.isBSS())
-      Type += Type.empty() ? "BSS" : " BSS";
+      Type += Type.empty() ? "BSS" : ", BSS";
+    if (Section.isDebugSection())
+      Type += Type.empty() ? "DEBUG" : ", DEBUG";
 
     if (HasLMAColumn)
       outs() << format("%3" PRIu64 " %-*s %08" PRIx64 " ", Idx, NameWidth,