update library from mainstream, especially {READ,WRITE}_ONCE

2021/include/bits.h

@@ -29,6 +29,8 @@
 #error "Only 64 bits word size supported."
 #endif
 
+/* fixed-size types
+ */
 typedef int64_t  s64;
 typedef int32_t  s32;
 typedef int16_t  s16;
@@ -38,9 +40,18 @@ typedef uint64_t u64;
 typedef uint32_t u32;
 typedef uint16_t u16;
 typedef uint8_t  u8;
+
+/* convenience types
+ */
+typedef unsigned long int ulong;
 typedef unsigned int uint;
+typedef unsigned short ushort;
 typedef unsigned char uchar;
 
+/* char is a special case, as it can be signed or unsigned
+ */
+typedef signed char schar;
+
 /* count trailing zeroes : 00101000 -> 3
  *                              ^^^
  */

2021/include/debug.h

@@ -22,7 +22,6 @@
 #define _unused __attribute__((__unused__))
 #define _printf __attribute__ ((format (printf, 6, 7)))
 #ifdef DEBUG_DEBUG
-#define _printf __attribute__ ((format (printf, 6, 7)))
 void debug_init(u32 level);
 void debug_level_set(u32 level);
 void debug_devel_set(u32 level);

2021/include/rwonce.h

@@ -40,8 +40,8 @@
     unsigned type:  (unsigned type)0,                                   \
     signed type:    (signed type)0
 
-#define __unqual_scalar_typeof(x) typeof(				\
-		_Generic((x),						\
+#define __unqual_scalar_typeof(x)                                       \
+    typeof(_Generic((x),                                                \
                     char:  (char)0,                                     \
                     __scalar_type_to_expr_cases(char),                  \
                     __scalar_type_to_expr_cases(short),                 \