[PATCH] D113356: [llvm-objdump] -p: Dump PE header for PE/COFF

[Fangrui Song via Phabricator via llvm-commits]

MaskRay created this revision.
MaskRay added reviewers: jhenderson, mstorsjo.
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For a triple DLL built with `clang --target=x86_64-windows -O2 -c a.c; lld-link -subsystem:console -dll a.o -out:a.dll`,
`objdump -p` vs `llvm-objdump -p`:

  -a.dll:     file format pei-x86-64
  -
  +a.dll: file format coff-x86-64
   Characteristics 0x2022
          executable
          large address aware
  @@ -57,4 +56,4 @@
   Entry d 0000000000000000 00000000 Delay Import Directory
   Entry e 0000000000000000 00000000 CLR Runtime Header
   Entry f 0000000000000000 00000000 Reserved
  -
  +Export Table:

For a Linux image (`vmlinuz-5.10.76-gentoo-r1`) built with `CONFIG_EFI_STUB=y`
(https://www.kernel.org/doc/html/latest/admin-guide/efi-stub.html):

  -vmlinuz-5.10.76-gentoo-r1:     file format pei-x86-64
  -
  -Characteristics 0x20e
  +vmlinuz-5.10.76-gentoo-r1:     file format coff-x86-64
  +Characteristics 0x206
          executable
          line numbers stripped
  -       symbols stripped
          debugging information removed
  
   Time/Date              Wed Dec 31 16:00:00 1969
  @@ -55,10 +53,4 @@
   Entry d 0000000000000000 00000000 Delay Import Directory
   Entry e 0000000000000000 00000000 CLR Runtime Header
   Entry f 0000000000000000 00000000 Reserved
  -
  -
  -PE File Base Relocations (interpreted .reloc section contents)
  -
  -Virtual Address: 000037ca Chunk size 10 (0xa) Number of fixups 1
  -       reloc    0 offset    0 [37ca] ABSOLUTE
  -
  +Export Table:

`symbols stripped` looks like a GNU objdump problem.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D113356

Files:
  llvm/test/tools/llvm-objdump/COFF/private-headers-old.test
  llvm/test/tools/llvm-objdump/COFF/private-headers.test
  llvm/test/tools/llvm-objdump/COFF/private-headers.yaml
  llvm/tools/llvm-objdump/COFFDump.cpp

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