Add PPC64 support to breakpad processor.

A=Jia Ji <jijia@google.com>
Original review: https://breakpad.appspot.com/557002/
Review URL: https://breakpad.appspot.com/558002

git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1147 4c0a9323-5329-0410-9bdc-e9ce6186880e

2 files changed, 28 insertions, 0 deletions

diff --git a/src/google_breakpad/processor/minidump.h b/src/google_breakpad/processor/minidump.h
index 18097714..87c00276 100644
--- a/src/google_breakpad/processor/minidump.h
+++ b/src/google_breakpad/processor/minidump.h
@@ -188,6 +188,7 @@ class MinidumpContext : public MinidumpStream {
   const MDRawContextAMD64* GetContextAMD64() const;
   const MDRawContextARM*   GetContextARM() const;
   const MDRawContextPPC*   GetContextPPC() const;
+  const MDRawContextPPC64* GetContextPPC64() const;
   const MDRawContextSPARC* GetContextSPARC() const;
   const MDRawContextX86*   GetContextX86() const;
 
@@ -202,6 +203,7 @@ class MinidumpContext : public MinidumpStream {
     MDRawContextBase*  base;
     MDRawContextX86*   x86;
     MDRawContextPPC*   ppc;
+    MDRawContextPPC64* ppc64;
     MDRawContextAMD64* amd64;
     // on Solaris SPARC, sparc is defined as a numeric constant,
     // so variables can NOT be named as sparc
diff --git a/src/google_breakpad/processor/stack_frame_cpu.h b/src/google_breakpad/processor/stack_frame_cpu.h
index a9cf99b7..cda3a8de 100644
--- a/src/google_breakpad/processor/stack_frame_cpu.h
+++ b/src/google_breakpad/processor/stack_frame_cpu.h
@@ -123,6 +123,32 @@ struct StackFramePPC : public StackFrame {
   int context_validity;
 };
 
+struct StackFramePPC64 : public StackFrame {
+  // ContextValidity should eventually contain entries for the validity of
+  // other nonvolatile (callee-save) registers as in
+  // StackFrameX86::ContextValidity, but the ppc stackwalker doesn't currently
+  // locate registers other than the ones listed here.
+  enum ContextValidity {
+    CONTEXT_VALID_NONE = 0,
+    CONTEXT_VALID_SRR0 = 1 << 0,
+    CONTEXT_VALID_GPR1 = 1 << 1,
+    CONTEXT_VALID_ALL  = -1
+  };
+
+  StackFramePPC64() : context(), context_validity(CONTEXT_VALID_NONE) {}
+
+  // Register state.  This is only fully valid for the topmost frame in a
+  // stack.  In other frames, the values of nonvolatile registers may be
+  // present, given sufficient debugging information.  Refer to
+  // context_validity.
+  MDRawContextPPC64 context;
+
+  // context_validity is actually ContextValidity, but int is used because
+  // the OR operator doesn't work well with enumerated types.  This indicates
+  // which fields in context are valid.
+  int context_validity;
+};
+
 struct StackFrameAMD64 : public StackFrame {
   // ContextValidity has one entry for each register that we might be able
   // to recover.