X-Git-Url: http://mj.ucw.cz/gitweb/?a=blobdiff_plain;ds=sidebyside;f=lib%2Futil.h;h=18e36524b422304b6ec1b0aa98e5bd0e8486dcc9;hb=bb37203461a4380e32be26594a74b77727dda97d;hp=f7fe61dd935e1b4ed59453dcd04d738ac5202dfa;hpb=dd1616dba9eadf3b0d553b545e0d42eadac808cd;p=home-hw.git

diff --git a/lib/util.h b/lib/util.h
index f7fe61d..18e3652 100644
--- a/lib/util.h
+++ b/lib/util.h
@@ -24,6 +24,7 @@ typedef int32_t s32;
 #define MIN(x,y) ((x) < (y) ? (x) : (y))
 #define MAX(x,y) ((x) > (y) ? (x) : (y))
 #define CLAMP(x,min,max) ({ typeof(x) _t=x; (_t < min) ? min : (_t > max) ? max : _t; })
+#define ARRAY_SIZE(ary) (sizeof(ary)/sizeof((ary)[0]))
 
 #define UNUSED __attribute__((unused))
 
@@ -84,11 +85,19 @@ static inline void wait_for_interrupt(void)
 	asm volatile ("wfi");
 }
 
+// A compiler memory barrier
+
+static inline void barrier(void)
+{
+	asm volatile ("" : : : "memory");
+}
+
 // util-debug.c
 
 void debug_printf(const char *fmt, ...) __attribute__((format(printf,1,2)));
 void debug_puts(const char *s);
 void debug_putc(int c);
+void debug_flush(void);
 
 void debug_led(bool light);
 void debug_led_toggle(void);