[test][hwasan] Implement sanitizer_specific for HWASAN

compiler-rt/test/sanitizer_common/sanitizer_specific.h

@@ -31,6 +31,30 @@ static void make_mem_good(void *p, size_t s) {
 static void make_mem_bad(void *p, size_t s) {
   __asan_poison_memory_region(p, s);
 }
+#elif __has_feature(hwaddress_sanitizer)
+#  include <sanitizer/hwasan_interface.h>
+#  include <stdlib.h>
+static void check_mem_is_good(void *p, size_t s) {
+  if (__hwasan_test_shadow(p, s) != -1)
+    abort();
+}
+static void make_mem_good(void *p, size_t s) {
+  __hwasan_tag_memory(p, __hwasan_get_tag_from_pointer(p), s);
+}
+static void make_mem_bad(void *p, size_t s) {
+  uint8_t tag = ~__hwasan_get_tag_from_pointer(p);
+  if (!tag) {
+    // Nothing wrong with tag zero, but non-zero tags help to detect never
+    // tagged memory.
+    tag = 1;
+  }
+  __hwasan_tag_memory(p, tag, s);
+  // With misaligned `p` or short granules we can't guarantee tag mismatch.
+  if (__hwasan_test_shadow(p, s) != 0)
+    abort();
+  if (s > 1 && __hwasan_test_shadow(((char *)p) + s - 1, 1) != 0)
+    abort();
+}
 #else
 static void check_mem_is_good(void *p, size_t s) {}
 static void make_mem_good(void *p, size_t s) {}