Implement a leaner printf for Trusted Firmware
This patch implements a "tf_printf" which supports only the commonly
used format specifiers in Trusted Firmware, which uses a lot less
stack space than the stdlib printf function.
Fixes ARM-software/tf-issues#116
Change-Id: I7dfa1944f4c1e634b3e2d571f49afe02d109a351
diff --git a/include/common/debug.h b/include/common/debug.h
index 5b496d7..c70109f 100644
--- a/include/common/debug.h
+++ b/include/common/debug.h
@@ -43,14 +43,14 @@
* TODO : add debug levels.
*/
#if DEBUG
- #define INFO(...) printf("INFO: " __VA_ARGS__)
- #define WARN(...) printf("WARN: " __VA_ARGS__)
+ #define INFO(...) tf_printf("INFO: " __VA_ARGS__)
+ #define WARN(...) tf_printf("WARN: " __VA_ARGS__)
#else
#define INFO(...)
#define WARN(...)
#endif
-#define ERROR(...) printf("ERROR: " __VA_ARGS__)
+#define ERROR(...) tf_printf("ERROR: " __VA_ARGS__)
/* For the moment this Panic function is very basic, Report an error and
@@ -67,5 +67,7 @@
#endif
void print_string_value(char *s, unsigned long *mem);
+void tf_printf(const char *fmt, ...);
+
#endif /* __DEBUG_H__ */