clang/gcov: Add a way to directly dump memory address

Signed-off-by: wangmingrong1 <wangmingrong1@xiaomi.com>

include/gcov.h

@@ -161,6 +161,20 @@ extern void __gcov_filename_to_gcfn(FAR const char *filename,
                                                      FAR void *),
                                      FAR void *arg);
 
+/****************************************************************************
+ * Name: __gcov_dump_to_memory
+ *
+ * Description:
+ *   Dump gcov data directly to memory
+ *
+ * Parameters:
+ *   ptr - Memory Address
+ *   size - Memory block size
+ *
+ ****************************************************************************/
+
+size_t __gcov_dump_to_memory(FAR void *ptr, size_t size);
+
 #undef EXTERN
 #ifdef __cplusplus
 }

libs/libbuiltin/compiler-rt/coverage.c

@@ -324,6 +324,15 @@ void __gcov_dump(void)
   _NX_CLOSE(fd);
 }
 
+size_t __gcov_dump_to_memory(FAR void *ptr, size_t size)
+{
+  struct lib_memoutstream_s stream;
+
+  lib_memoutstream(&stream, ptr, size);
+
+  return __llvm_profile_dump(&stream.common);
+}
+
 void __gcov_reset(void)
 {
 }