Vendor import of compiler-rt trunk r304460:vendor/compiler-rt/compiler-rt-trunk-r304460

https://llvm.org/svn/llvm-project/compiler-rt/trunk@304460

1 files changed, 2 insertions, 94 deletions

diff --git a/lib/msan/msan_allocator.cc b/lib/msan/msan_allocator.cc
index 1be573faa412..f76b01de0924 100644
--- a/lib/msan/msan_allocator.cc
+++ b/lib/msan/msan_allocator.cc
@@ -12,8 +12,6 @@
 // MemorySanitizer allocator.
 //===----------------------------------------------------------------------===//
 
-#include "sanitizer_common/sanitizer_allocator.h"
-#include "sanitizer_common/sanitizer_allocator_interface.h"
 #include "msan.h"
 #include "msan_allocator.h"
 #include "msan_origin.h"
@@ -22,102 +20,12 @@
 
 namespace __msan {
 
-struct Metadata {
-  uptr requested_size;
-};
-
-struct MsanMapUnmapCallback {
-  void OnMap(uptr p, uptr size) const {}
-  void OnUnmap(uptr p, uptr size) const {
-    __msan_unpoison((void *)p, size);
-
-    // We are about to unmap a chunk of user memory.
-    // Mark the corresponding shadow memory as not needed.
-    uptr shadow_p = MEM_TO_SHADOW(p);
-    ReleaseMemoryPagesToOS(shadow_p, shadow_p + size);
-    if (__msan_get_track_origins()) {
-      uptr origin_p = MEM_TO_ORIGIN(p);
-      ReleaseMemoryPagesToOS(origin_p, origin_p + size);
-    }
-  }
-};
-
-#if defined(__mips64)
-  static const uptr kMaxAllowedMallocSize = 2UL << 30;
-  static const uptr kRegionSizeLog = 20;
-  static const uptr kNumRegions = SANITIZER_MMAP_RANGE_SIZE >> kRegionSizeLog;
-  typedef TwoLevelByteMap<(kNumRegions >> 12), 1 << 12> ByteMap;
-
-  struct AP32 {
-    static const uptr kSpaceBeg = 0;
-    static const u64 kSpaceSize = SANITIZER_MMAP_RANGE_SIZE;
-    static const uptr kMetadataSize = sizeof(Metadata);
-    typedef __sanitizer::CompactSizeClassMap SizeClassMap;
-    static const uptr kRegionSizeLog = __msan::kRegionSizeLog;
-    typedef __msan::ByteMap ByteMap;
-    typedef MsanMapUnmapCallback MapUnmapCallback;
-    static const uptr kFlags = 0;
-  };
-  typedef SizeClassAllocator32<AP32> PrimaryAllocator;
-#elif defined(__x86_64__)
-#if SANITIZER_LINUX && !defined(MSAN_LINUX_X86_64_OLD_MAPPING)
-  static const uptr kAllocatorSpace = 0x700000000000ULL;
-#else
-  static const uptr kAllocatorSpace = 0x600000000000ULL;
-#endif
-  static const uptr kMaxAllowedMallocSize = 8UL << 30;
-
-  struct AP64 {  // Allocator64 parameters. Deliberately using a short name.
-    static const uptr kSpaceBeg = kAllocatorSpace;
-    static const uptr kSpaceSize = 0x40000000000; // 4T.
-    static const uptr kMetadataSize = sizeof(Metadata);
-    typedef DefaultSizeClassMap SizeClassMap;
-    typedef MsanMapUnmapCallback MapUnmapCallback;
-    static const uptr kFlags = 0;
-  };
-
-  typedef SizeClassAllocator64<AP64> PrimaryAllocator;
-
-#elif defined(__powerpc64__)
-  static const uptr kMaxAllowedMallocSize = 2UL << 30;  // 2G
-
-  struct AP64 {  // Allocator64 parameters. Deliberately using a short name.
-    static const uptr kSpaceBeg = 0x300000000000;
-    static const uptr kSpaceSize = 0x020000000000; // 2T.
-    static const uptr kMetadataSize = sizeof(Metadata);
-    typedef DefaultSizeClassMap SizeClassMap;
-    typedef MsanMapUnmapCallback MapUnmapCallback;
-    static const uptr kFlags = 0;
-  };
-
-  typedef SizeClassAllocator64<AP64> PrimaryAllocator;
-#elif defined(__aarch64__)
-  static const uptr kMaxAllowedMallocSize = 2UL << 30;  // 2G
-  static const uptr kRegionSizeLog = 20;
-  static const uptr kNumRegions = SANITIZER_MMAP_RANGE_SIZE >> kRegionSizeLog;
-  typedef TwoLevelByteMap<(kNumRegions >> 12), 1 << 12> ByteMap;
-
-  struct AP32 {
-    static const uptr kSpaceBeg = 0;
-    static const u64 kSpaceSize = SANITIZER_MMAP_RANGE_SIZE;
-    static const uptr kMetadataSize = sizeof(Metadata);
-    typedef __sanitizer::CompactSizeClassMap SizeClassMap;
-    static const uptr kRegionSizeLog = __msan::kRegionSizeLog;
-    typedef __msan::ByteMap ByteMap;
-    typedef MsanMapUnmapCallback MapUnmapCallback;
-    static const uptr kFlags = 0;
-  };
-  typedef SizeClassAllocator32<AP32> PrimaryAllocator;
-#endif
-typedef SizeClassAllocatorLocalCache<PrimaryAllocator> AllocatorCache;
-typedef LargeMmapAllocator<MsanMapUnmapCallback> SecondaryAllocator;
-typedef CombinedAllocator<PrimaryAllocator, AllocatorCache,
-                          SecondaryAllocator> Allocator;
-
 static Allocator allocator;
 static AllocatorCache fallback_allocator_cache;
 static SpinMutex fallback_mutex;
 
+Allocator &get_allocator() { return allocator; }
+
 void MsanAllocatorInit() {
   allocator.Init(
       common_flags()->allocator_may_return_null,