[TSAN] add Go race detector support for macOS/ARM64

[cherry]

Summary

Add Go race detector support for macOS/ARM64. The Go counterpart is https://golang.org/cl/266373 .

[dvyukov]

Cherry, do you have commit access? Or you need somebody to merge it?

[cherry]

Thanks for review. I don't have commit access so it would be great if you or somebody commits it. Thanks.

[cherry]

Than, do you mind committing this patch? Thanks!

[thanm]

Sure, I'll see about submitting it.

[thanm]

Whoops, it looks as though I need to re-apply for commit access following the github move. Dmitry, maybe you could please submit?

[dvyukov]

Merged in https://github.com/llvm/llvm-project/commit/00da38ce2d36c07f12c287dc515d37bb7bc410e9
thanks

[cherry]

Thanks!

compiler-rt/lib/tsan/go/buildgo.sh

SRCS="
     ../../sanitizer_common/sanitizer_procmaps_common.cpp
     ../../sanitizer_common/sanitizer_linux.cpp
     ../../sanitizer_common/sanitizer_linux_libcdep.cpp
     ../../sanitizer_common/sanitizer_netbsd.cpp
     ../../sanitizer_common/sanitizer_stoptheworld_linux_libcdep.cpp
     ../../sanitizer_common/sanitizer_stoptheworld_netbsd_libcdep.cpp
   "
 elif [ "`uname -a | grep Darwin`" != "" ]; then
-  SUFFIX="darwin_amd64"
   OSCFLAGS="-fPIC -Wno-unused-const-variable -Wno-unknown-warning-option -mmacosx-version-min=10.7"
-  ARCHCFLAGS="-m64"
   OSLDFLAGS="-lpthread -fPIC -fpie -mmacosx-version-min=10.7"
   SRCS="
     $SRCS
     ../rtl/tsan_platform_mac.cpp
     ../../sanitizer_common/sanitizer_mac.cpp
     ../../sanitizer_common/sanitizer_mac_libcdep.cpp
     ../../sanitizer_common/sanitizer_posix.cpp
     ../../sanitizer_common/sanitizer_posix_libcdep.cpp
     ../../sanitizer_common/sanitizer_procmaps_mac.cpp
   "
+  if [ "`uname -a | grep x86_64`" != "" ]; then
+    SUFFIX="darwin_amd64"
+    ARCHCFLAGS="-m64"
+  elif [ "`uname -a | grep arm64`" != "" ]; then
+    SUFFIX="darwin_arm64"
+    ARCHCFLAGS=""
+  fi
 elif [ "`uname -a | grep MINGW`" != "" ]; then
   SUFFIX="windows_amd64"
   OSCFLAGS="-Wno-error=attributes -Wno-attributes -Wno-unused-const-variable -Wno-unknown-warning-option"
   ARCHCFLAGS="-m64"
   OSLDFLAGS=""
   SRCS="
     $SRCS
     ../rtl/tsan_platform_windows.cpp

compiler-rt/lib/tsan/rtl/tsan_platform.h

struct Mapping47 {
   static const uptr kAppMemBeg     = 0x000000001000ull;
   static const uptr kAppMemEnd     = 0x00e000000000ull;
 };
 
 #define TSAN_RUNTIME_VMA 1
 
 #elif SANITIZER_GO && defined(__aarch64__)
 
-/* Go on linux/aarch64 (48-bit VMA)
+/* Go on linux/aarch64 (48-bit VMA) and darwin/aarch64 (47-bit VMA)
 0000 0000 1000 - 0000 1000 0000: executable
 0000 1000 0000 - 00c0 0000 0000: -
 00c0 0000 0000 - 00e0 0000 0000: heap
 00e0 0000 0000 - 2000 0000 0000: -
 2000 0000 0000 - 3000 0000 0000: shadow
 3000 0000 0000 - 3000 0000 0000: -
 3000 0000 0000 - 4000 0000 0000: metainfo (memory blocks and sync objects)
 4000 0000 0000 - 6000 0000 0000: -

compiler-rt/lib/tsan/rtl/tsan_platform_mac.cpp

static void my_pthread_introspection_hook(unsigned int event, pthread_t thread,
   }
 
   if (prev_pthread_introspection_hook != nullptr)
     prev_pthread_introspection_hook(event, thread, addr, size);
 }
 #endif
 
 void InitializePlatformEarly() {
-#if defined(__aarch64__)
+#if !SANITIZER_GO && defined(__aarch64__)
   uptr max_vm = GetMaxUserVirtualAddress() + 1;
   if (max_vm != Mapping::kHiAppMemEnd) {
     Printf("ThreadSanitizer: unsupported vm address limit %p, expected %p.\n",
            max_vm, Mapping::kHiAppMemEnd);
     Die();
   }
 #endif
 }