Add "-format darwin" to llvm-nm to be like darwin's nm(1) -m output.

This is a first step in seeing if it is possible to make llvm-nm produce
the same output as darwin's nm(1).  Darwin's default format is bsd but its
-m output prints the longer Mach-O specific details.  For now I added the
"-format darwin" to do this (whos name may need to change in the future).
As there are other Mach-O specific flags to nm(1) which I'm hoping to add some
how in the future.  But I wanted to see if I could get the correct output for
-m flag using llvm-nm and the libObject interfaces.

I got this working but would love to hear what others think about this approach
to getting object/format specific details printed with llvm-nm.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210285 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 14 insertions, 0 deletions

diff --git a/include/llvm/Object/MachO.h b/include/llvm/Object/MachO.h
index 710ad7ef15..ab5b462e01 100644
--- a/include/llvm/Object/MachO.h
+++ b/include/llvm/Object/MachO.h
@@ -61,6 +61,10 @@ public:
 
   void moveSymbolNext(DataRefImpl &Symb) const override;
   error_code getSymbolName(DataRefImpl Symb, StringRef &Res) const override;
+
+  // MachO specific.
+  error_code getIndirectName(DataRefImpl Symb, StringRef &Res) const;
+
   error_code getSymbolAddress(DataRefImpl Symb, uint64_t &Res) const override;
   error_code getSymbolAlignment(DataRefImpl Symb, uint32_t &Res) const override;
   error_code getSymbolSize(DataRefImpl Symb, uint64_t &Res) const override;
@@ -105,6 +109,9 @@ public:
                             LibraryRef &Res) const override;
   error_code getLibraryPath(DataRefImpl LibData, StringRef &Res) const override;
 
+  // MachO specific.
+  error_code getLibraryShortNameByIndex(unsigned Index, StringRef &Res);
+
   // TODO: Would be useful to have an iterator based version
   // of the load command interface too.
 
@@ -198,6 +205,9 @@ public:
   bool is64Bit() const;
   void ReadULEB128s(uint64_t Index, SmallVectorImpl<uint64_t> &Out) const;
 
+  static StringRef guessLibraryShortName(StringRef Name, bool &isFramework,
+                                         StringRef &Suffix);
+
   static Triple::ArchType getArch(uint32_t CPUType);
 
   static bool classof(const Binary *v) {
@@ -207,6 +217,10 @@ public:
 private:
   typedef SmallVector<const char*, 1> SectionList;
   SectionList Sections;
+  typedef SmallVector<const char*, 1> LibraryList;
+  LibraryList Libraries;
+  typedef SmallVector<StringRef, 1> LibraryShortName;
+  LibraryShortName LibrariesShortNames;
   const char *SymtabLoadCmd;
   const char *DysymtabLoadCmd;
   const char *DataInCodeLoadCmd;