commit 9a429b766f50805735f49fd7216fa3802bbf7ac4
author Davide Italiano <davide@freebsd.org> Wed Sep 09 00:21:18 2015 +0000
committer Davide Italiano <davide@freebsd.org> Wed Sep 09 00:21:18 2015 +0000
tree 3b23a2c63331aecc47855ece66f26b324d551f8f
parent ee381ffba4a1797a38115217c1540b5c3b8ea4e7

[llvm-readobj] MachO -- dump LinkerOptions load command.

Example output:

Linker Options {
  Size: 32
  Count: 2
  Strings [
    Value: -framework
    Value: Cocoa
  ]
}

There were only two tests using this -- so I converted them as part of
this commit rather than separately.

Differential Revision:	 http://reviews.llvm.org/D12702

llvm-svn: 247106

llvm/tools/llvm-readobj/MachODumper.cpp

diff --git a/llvm/tools/llvm-readobj/MachODumper.cpp b/llvm/tools/llvm-readobj/MachODumper.cpp
index fd6e00b..177f79f 100644
--- a/llvm/tools/llvm-readobj/MachODumper.cpp
+++ b/llvm/tools/llvm-readobj/MachODumper.cpp
@@ -46,6 +46,7 @@
   void printMachODysymtab() override;
   void printMachOSegment() override;
   void printMachOIndirectSymbols() override;
+  void printMachOLinkerOptions () override;
 
 private:
   template<class MachHeader>
@@ -791,3 +792,22 @@
     }
   }
 }
+
+void MachODumper::printMachOLinkerOptions() {
+  for (const auto &Load : Obj->load_commands()) {
+    if (Load.C.cmd == MachO::LC_LINKER_OPTION) {
+      MachO::linker_option_command LOLC = Obj->getLinkerOptionLoadCommand(Load);
+      DictScope Group(W, "Linker Options");
+      W.printNumber("Size", LOLC.cmdsize);
+      ListScope D(W, "Strings");
+      uint64_t DataSize = LOLC.cmdsize - sizeof(MachO::linker_option_command);
+      const char *P = Load.Ptr + sizeof(MachO::linker_option_command);
+      StringRef Data(P, DataSize);
+      for (unsigned i = 0; i < LOLC.count; ++i) {
+        std::pair<StringRef,StringRef> Split = Data.split('\0');
+        W.printString("Value", Split.first);
+        Data = Split.second;
+      }
+    }
+  }
+}

llvm/tools/llvm-readobj/ObjDumper.h

diff --git a/llvm/tools/llvm-readobj/ObjDumper.h b/llvm/tools/llvm-readobj/ObjDumper.h
index 6501521..1a80b0a 100644
--- a/llvm/tools/llvm-readobj/ObjDumper.h
+++ b/llvm/tools/llvm-readobj/ObjDumper.h
@@ -61,6 +61,7 @@
   virtual void printMachODysymtab() { }
   virtual void printMachOSegment() { }
   virtual void printMachOIndirectSymbols() { }
+  virtual void printMachOLinkerOptions() { }
 
   virtual void printStackMap() const = 0;
 

llvm/tools/llvm-readobj/llvm-readobj.cpp

diff --git a/llvm/tools/llvm-readobj/llvm-readobj.cpp b/llvm/tools/llvm-readobj/llvm-readobj.cpp
index 2e17525..a8e4ca4 100644
--- a/llvm/tools/llvm-readobj/llvm-readobj.cpp
+++ b/llvm/tools/llvm-readobj/llvm-readobj.cpp
@@ -192,6 +192,11 @@
   MachOIndirectSymbols("macho-indirect-symbols",
                   cl::desc("Display MachO indirect symbols"));
 
+  // -macho-linker-options
+  cl::opt<bool>
+  MachOLinkerOptions("macho-linker-options",
+                  cl::desc("Display MachO linker options"));
+
   // -macho-segment
   cl::opt<bool>
   MachOSegment("macho-segment",
@@ -343,6 +348,8 @@
       Dumper->printMachODataInCode();
     if (opts::MachOIndirectSymbols)
       Dumper->printMachOIndirectSymbols();
+    if (opts::MachOLinkerOptions)
+      Dumper->printMachOLinkerOptions();
     if (opts::MachOSegment)
       Dumper->printMachOSegment();
     if (opts::MachOVersionMin)