tree 9c785aa189c154ed30286636da1f46d6a032c4fe
parent a15cc59ad79ee05e352325a13c4a3d12e1046c0c
author Michael Trent <mtrent@apple.com> 1547584890 +0000
committer Michael Trent <mtrent@apple.com> 1547584890 +0000

llvm-objdump -m -D should disassemble all text segments

Summary:
When running llvm-objdump with the -macho option objdump will by default
disassemble only the __TEXT,__text section (or __TEXT_EXEC,__text when
disassembling MH_KEXT_BUNDLE files). The -disassemble-all option is
treated no diferently than -disassemble.

This change upates llvm-objdump's MachO parsing code to disassemble all
__text sections found in a file when -disassemble-all is specified. This
is useful for disassembling files with more than one __text section, or
when disassembling files whose __text section is not present in __TEXT.

I added a lit test case that verifies "llvm-objdump -m -d" and 
"llvm-objdump -m -D" produce the expected results on a reference binary. 
I also updated the CommandGuide documentation for llvm-objdump.rst and
verified it renders correctly as man and html.

rdar://42899338

Reviewers: ab, pete, lhames

Reviewed By: lhames

Subscribers: rupprecht, llvm-commits

Differential Revision: https://reviews.llvm.org/D56649

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351238 91177308-0d34-0410-b5e6-96231b3b80d8