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Object/llvm-objdump: allow dumping of mach-o exports trie

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MachOObjectFile in lib/Object currently has no support for parsing the rebase, 
binding, and export information from the LC_DYLD_INFO load command in final 
linked mach-o images. This patch adds support for parsing the exports trie data
structure. It also adds an option to llvm-objdump to dump that export info.

I did the exports parsing first because it is the hardest. The information is 
encoded in a trie structure, but the standard ObjectFile way to inspect content 
is through iterators. So I needed to make an iterator that would do a 
non-recursive walk through the trie and maintain the concatenation of edges 
needed for the current string prefix.

I plan to add similar support in MachOObjectFile and llvm-objdump to 
parse/display the rebasing and binding info too.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216808 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nick Kledzik
2014-08-30 00:20:14 +00:00
parent 4e92383b67
commit aa4d2acf37
8 changed files with 397 additions and 7 deletions
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2
include/llvm/Support/MachO.h
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@@ -322,13 +322,13 @@ namespace llvm {
};
enum {
EXPORT_SYMBOL_FLAGS_KIND_MASK = 0x03u,
EXPORT_SYMBOL_FLAGS_WEAK_DEFINITION = 0x04u,
EXPORT_SYMBOL_FLAGS_REEXPORT = 0x08u,
EXPORT_SYMBOL_FLAGS_STUB_AND_RESOLVER = 0x10u
};
enum ExportSymbolKind {
EXPORT_SYMBOL_FLAGS_KIND_MASK = 0x03u,
EXPORT_SYMBOL_FLAGS_KIND_REGULAR = 0x00u,
EXPORT_SYMBOL_FLAGS_KIND_THREAD_LOCAL = 0x01u,
EXPORT_SYMBOL_FLAGS_KIND_ABSOLUTE = 0x02u