csource: regenerate

1 files changed, 12 insertions, 0 deletions

diff --git a/csource/common.go b/csource/common.go
index 8117eed94..13034dee5 100644
--- a/csource/common.go
+++ b/csource/common.go
@@ -142,6 +142,18 @@ static void install_segv_handler()
 		__atomic_fetch_sub(&skip_segv, 1, __ATOMIC_SEQ_CST); \
 	}
 
+#define BITMASK_LEN(type, bf_len) (type)((1ul << bf_len) - 1)
+
+#define BITMASK_LEN_OFF(type, bf_off, bf_len) (type)(BITMASK_LEN(type, bf_len) << bf_off)
+
+#define STORE_BY_BITMASK(type, addr, val, bf_off, bf_len)                     \
+	do {                                                                  \
+		type new_val = *(type*)addr;                                  \
+		new_val &= ~BITMASK_LEN_OFF(type, bf_off, bf_len);            \
+		new_val |= ((type)val & BITMASK_LEN(type, bf_len)) << bf_off; \
+		*(type*)addr = new_val;                                       \
+	} while (0)
+
 #ifdef __NR_syz_emit_ethernet
 static void vsnprintf_check(char* str, size_t size, const char* format, va_list args)
 {