Put PUBLIC lines in Mac symbol files.

Exported symbols on Mach-O binaries are defined in a STABS section. This patch makes stabs_reader handle them, adds support for Extern symbols in the Module class (which are output as PUBLIC lines in symbol files), and the proper processing in stabs_to_module to hook it all up.

A=mark R=jimb at http://breakpad.appspot.com/163001 and http://breakpad.appspot.com/267001

git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@778 4c0a9323-5329-0410-9bdc-e9ce6186880e

1 files changed, 16 insertions, 0 deletions

diff --git a/src/common/stabs_to_module.cc b/src/common/stabs_to_module.cc
index 62fcd39e..e694febc 100644
--- a/src/common/stabs_to_module.cc
+++ b/src/common/stabs_to_module.cc
@@ -132,6 +132,22 @@ bool StabsToModule::Line(uint64_t address, const char *name, int number) {
   return true;
 }
 
+bool StabsToModule::Extern(const string &name, uint64_t address) {
+  Module::Extern *ext = new Module::Extern;
+  // Older libstdc++ demangle implementations can crash on unexpected
+  // input, so be careful about what gets passed in.
+  if (name.compare(0, 3, "__Z") == 0) {
+    ext->name = Demangle(name.substr(1));
+  } else if (name[0] == '_') {
+    ext->name = name.substr(1);
+  } else {
+    ext->name = name;
+  }
+  ext->address = address;
+  module_->AddExtern(ext);
+  return true;
+}
+
 void StabsToModule::Warning(const char *format, ...) {
   va_list args;
   va_start(args, format);