tsan: support mmap(MAP_32BIT)

Allow user memory in the first TB of address space.
This also enabled non-pie binaries and freebsd.
Fixes issue:
https://code.google.com/p/thread-sanitizer/issues/detail?id=5



git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@220571 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 5 insertions, 5 deletions

diff --git a/lib/sanitizer_common/sanitizer_allocator.h b/lib/sanitizer_common/sanitizer_allocator.h
index fe2b41ca4..23218016b 100644
--- a/lib/sanitizer_common/sanitizer_allocator.h
+++ b/lib/sanitizer_common/sanitizer_allocator.h
@@ -461,6 +461,11 @@ class SizeClassAllocator64 {
     }
   }
 
+  static uptr AdditionalSize() {
+    return RoundUpTo(sizeof(RegionInfo) * kNumClassesRounded,
+                     GetPageSizeCached());
+  }
+
   typedef SizeClassMap SizeClassMapT;
   static const uptr kNumClasses = SizeClassMap::kNumClasses;
   static const uptr kNumClassesRounded = SizeClassMap::kNumClassesRounded;
@@ -490,11 +495,6 @@ class SizeClassAllocator64 {
   };
   COMPILER_CHECK(sizeof(RegionInfo) >= kCacheLineSize);
 
-  static uptr AdditionalSize() {
-    return RoundUpTo(sizeof(RegionInfo) * kNumClassesRounded,
-                     GetPageSizeCached());
-  }
-
   RegionInfo *GetRegionInfo(uptr class_id) {
     CHECK_LT(class_id, kNumClasses);
     RegionInfo *regions = reinterpret_cast<RegionInfo*>(kSpaceBeg + kSpaceSize);