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

4 files changed, 37 insertions, 8 deletions

diff --git a/src/google_breakpad/common/minidump_cpu_ppc64.h b/src/google_breakpad/common/minidump_cpu_ppc64.h
index da4f8723..3a883230 100644
--- a/src/google_breakpad/common/minidump_cpu_ppc64.h
+++ b/src/google_breakpad/common/minidump_cpu_ppc64.h
@@ -116,14 +116,14 @@ typedef struct {
  * context stored in the structure.  MD_CONTEXT_PPC is Breakpad-defined.  Its
  * value was chosen to avoid likely conflicts with MD_CONTEXT_* for other
  * CPUs. */
-#define MD_CONTEXT_PPC                0x20000000
-#define MD_CONTEXT_PPC_BASE           (MD_CONTEXT_PPC | 0x00000001)
-#define MD_CONTEXT_PPC_FLOATING_POINT (MD_CONTEXT_PPC | 0x00000008)
-#define MD_CONTEXT_PPC_VECTOR         (MD_CONTEXT_PPC | 0x00000020)
+#define MD_CONTEXT_PPC64                0x01000000
+#define MD_CONTEXT_PPC64_BASE           (MD_CONTEXT_PPC64 | 0x00000001)
+#define MD_CONTEXT_PPC64_FLOATING_POINT (MD_CONTEXT_PPC64 | 0x00000008)
+#define MD_CONTEXT_PPC64_VECTOR         (MD_CONTEXT_PPC64 | 0x00000020)
 
-#define MD_CONTEXT_PPC_FULL           MD_CONTEXT_PPC_BASE
-#define MD_CONTEXT_PPC_ALL            (MD_CONTEXT_PPC_FULL | \
-                                       MD_CONTEXT_PPC_FLOATING_POINT | \
-                                       MD_CONTEXT_PPC_VECTOR)
+#define MD_CONTEXT_PPC64_FULL           MD_CONTEXT_PPC64_BASE
+#define MD_CONTEXT_PPC64_ALL            (MD_CONTEXT_PPC64_FULL | \
+                                         MD_CONTEXT_PPC64_FLOATING_POINT | \
+                                         MD_CONTEXT_PPC64_VECTOR)
 
 #endif /* GOOGLE_BREAKPAD_COMMON_MINIDUMP_CPU_PPC64_H__ */
diff --git a/src/google_breakpad/common/minidump_format.h b/src/google_breakpad/common/minidump_format.h
index af8cab0a..6406e4a9 100644
--- a/src/google_breakpad/common/minidump_format.h
+++ b/src/google_breakpad/common/minidump_format.h
@@ -604,6 +604,7 @@ typedef enum {
   MD_CPU_ARCHITECTURE_AMD64     =  9,  /* PROCESSOR_ARCHITECTURE_AMD64 */
   MD_CPU_ARCHITECTURE_X86_WIN64 = 10,
       /* PROCESSOR_ARCHITECTURE_IA32_ON_WIN64 (WoW64) */
+  MD_CPU_ARCHITECTURE_PPC64     = 0x8000, /* Breakpad-defined value for PPC64 */
   MD_CPU_ARCHITECTURE_SPARC     = 0x8001, /* Breakpad-defined value for SPARC */
   MD_CPU_ARCHITECTURE_UNKNOWN   = 0xffff  /* PROCESSOR_ARCHITECTURE_UNKNOWN */
 } MDCPUArchitecture;
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.