From 27386c5a95ce764759ffbf84bc3c7f3cea63624f Mon Sep 17 00:00:00 2001
From: Ed Morley <emorley@mozilla.com>
Date: Wed, 5 Dec 2012 23:10:15 +0000
Subject: [PATCH] Backout b5c19fdea86e (bug 809317) for windows build bustage

---
 tools/profiler/TableTicker.cpp | 60 ++++------------------------------
 1 file changed, 7 insertions(+), 53 deletions(-)

diff --git a/tools/profiler/TableTicker.cpp b/tools/profiler/TableTicker.cpp
index 63cc10908b31..9a3577091063 100644
--- a/tools/profiler/TableTicker.cpp
+++ b/tools/profiler/TableTicker.cpp
@@ -801,8 +801,12 @@ void StackWalkCallback(void* aPC, void* aSP, void* aClosure)
   array->count++;
 }
 
-static void doMergeBacktrace(ThreadProfile &aProfile, TickSample* aSample, void* aThread)
+void TableTicker::doBacktrace(ThreadProfile &aProfile, TickSample* aSample)
 {
+#ifndef XP_MACOSX
+  uintptr_t thread = GetThreadHandle(platform_data());
+  MOZ_ASSERT(thread);
+#endif
   void* pc_array[1000];
   void* sp_array[1000];
   PCArray array = {
@@ -816,13 +820,7 @@ static void doMergeBacktrace(ThreadProfile &aProfile, TickSample* aSample, void*
   StackWalkCallback(aSample->pc, aSample->sp, &array);
 
 #ifdef XP_MACOSX
-  pthread_t pt;
-  if (aThread) {
-    pt = (pthread_t)aThread;
-  } else {
-    pt = pthread_self();
-  }
-
+  pthread_t pt = GetProfiledThread(platform_data());
   void *stackEnd = reinterpret_cast<void*>(-1);
   if (pt)
     stackEnd = static_cast<char*>(pthread_get_stackaddr_np(pt));
@@ -830,9 +828,6 @@ static void doMergeBacktrace(ThreadProfile &aProfile, TickSample* aSample, void*
   if (aSample->fp >= aSample->sp && aSample->fp <= stackEnd)
     rv = FramePointerStackWalk(StackWalkCallback, 0, &array, reinterpret_cast<void**>(aSample->fp), stackEnd);
 #else
-  uintptr_t thread = (uintptr_t)aThread;
-  GetThreadHandle(platform_data());
-  MOZ_ASSERT(thread);
   nsresult rv = NS_StackWalk(StackWalkCallback, 0, &array, thread);
 #endif
   if (NS_SUCCEEDED(rv)) {
@@ -874,16 +869,6 @@ static void doMergeBacktrace(ThreadProfile &aProfile, TickSample* aSample, void*
     }
   }
 }
-
-void TableTicker::doBacktrace(ThreadProfile &aProfile, TickSample* aSample)
-{
-#ifdef XP_MACOSX
-  doMergeBacktrace(aProfile, aSample, GetProfiledThread(platform_data()));
-#else
-  doMergeBacktrace(aProfile, aSample, GetThreadHandle(platform_data()));
-#endif
-}
-
 #endif
 
 #if defined(USE_LIBUNWIND) && defined(ANDROID)
@@ -1280,17 +1265,6 @@ void print_callback(const ProfileEntry& entry, const char* tagStringData) {
     case 's':
     case 'c':
       printf_stderr("  %s\n", tagStringData);
-      break;
-    case 'l':
-      unsigned long long pc = (unsigned long long)(uintptr_t)entry.mTagPtr;
-      nsCodeAddressDetails details;
-      NS_DescribeCodeAddress((void*)pc, &details);
-      if (details.function) {
-        printf_stderr("  %s\n", details.function);
-      } else {
-        printf_stderr("  %#llx\n", pc);
-      }
-      break;
   }
 }
 
@@ -1305,28 +1279,8 @@ void mozilla_sampler_print_location()
     return;
   }
 
-  ThreadProfile threadProfile(2000, stack);
-#ifdef USE_NS_STACKWALK
-  // Get the frame pointer
-  void **bp;
-#if defined(__i386)
-  __asm__( "movl %%ebp, %0" : "=g"(bp));
-#else
-  // It would be nice if this worked uniformly, but at least on i386 and
-  // x86_64, it stopped working with gcc 4.1, because it points to the
-  // end of the saved registers instead of the start.
-  bp = (void**) __builtin_frame_address(0);
-#endif
-
-  TickSample sample;
-  sample.fp = (unsigned char*)bp;
-  sample.pc = nullptr;
-  sample.sp = (unsigned char*)&stack;
-
-  doMergeBacktrace(threadProfile, &sample, 0);
-#else
+  ThreadProfile threadProfile(1000, stack);
   doSampleStackTrace(stack, threadProfile, NULL);
-#endif
 
   threadProfile.flush();