[U-Boot] [PATCH v2 1/8] stdio.h: move printf() stuff from <common.h> to <stdio.h>

[Masahiro Yamada]

<common.h> pulls in a lot of headers.  Including it from every .c
file is a bad idea.  We need to remove contents until it contains
nothing.

Move printf() and friends to <stdio.h>.

Signed-off-by: Masahiro Yamada <yamada.masahiro at socionext.com>
---

Changes in v2:
  - newly added

 include/common.h | 41 +--------------------------------------
 include/stdio.h  | 59 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 60 insertions(+), 40 deletions(-)
 create mode 100644 include/stdio.h

diff --git a/include/common.h b/include/common.h
index aaed13167123..5e841947c17f 100644
--- a/include/common.h
+++ b/include/common.h
@@ -29,6 +29,7 @@ typedef volatile unsigned char	vu_char;
 #include <linux/stringify.h>
 #include <asm/ptrace.h>
 #include <stdarg.h>
+#include <stdio.h>
 #include <linux/kernel.h>
 
 #include <part.h>
@@ -699,46 +700,6 @@ unsigned int rand_r(unsigned int *seedp);
 /* serial stuff */
 int	serial_printf (const char *fmt, ...)
 		__attribute__ ((format (__printf__, 1, 2)));
-/* stdin */
-int	getc(void);
-int	tstc(void);
-
-/* stdout */
-#if !defined(CONFIG_SPL_BUILD) || \
-	(defined(CONFIG_TPL_BUILD) && defined(CONFIG_TPL_SERIAL_SUPPORT)) || \
-	(defined(CONFIG_SPL_BUILD) && !defined(CONFIG_TPL_BUILD) && \
-		defined(CONFIG_SPL_SERIAL_SUPPORT))
-void	putc(const char c);
-void	puts(const char *s);
-int	printf(const char *fmt, ...)
-		__attribute__ ((format (__printf__, 1, 2)));
-int	vprintf(const char *fmt, va_list args);
-#else
-#define	putc(...) do { } while (0)
-#define puts(...) do { } while (0)
-#define printf(...) do { } while (0)
-#define vprintf(...) do { } while (0)
-#endif
-
-/* stderr */
-#define eputc(c)		fputc(stderr, c)
-#define eputs(s)		fputs(stderr, s)
-#define eprintf(fmt,args...)	fprintf(stderr,fmt ,##args)
-
-/*
- * FILE based functions (can only be used AFTER relocation!)
- */
-#define stdin		0
-#define stdout		1
-#define stderr		2
-#define MAX_FILES	3
-
-int	fprintf(int file, const char *fmt, ...)
-		__attribute__ ((format (__printf__, 2, 3)));
-void	fputs(int file, const char *s);
-void	fputc(int file, const char c);
-int	ftstc(int file);
-int	fgetc(int file);
 
 /* lib/gzip.c */
 int gzip(void *dst, unsigned long *lenp,
diff --git a/include/stdio.h b/include/stdio.h
new file mode 100644
index 000000000000..aedf3744525e
--- /dev/null
+++ b/include/stdio.h
@@ -0,0 +1,59 @@
+#ifndef __STDIO_H
+#define __STDIO_H
+
+#include <stdarg.h>
+#include <linux/compiler.h>
+
+/* stdin */
+int getc(void);
+int tstc(void);
+
+/* stdout */
+#if !defined(CONFIG_SPL_BUILD) || \
+	(defined(CONFIG_TPL_BUILD) && defined(CONFIG_TPL_SERIAL_SUPPORT)) || \
+	(defined(CONFIG_SPL_BUILD) && !defined(CONFIG_TPL_BUILD) && \
+		defined(CONFIG_SPL_SERIAL_SUPPORT))
+void putc(const char c);
+void puts(const char *s);
+int __printf(1, 2) printf(const char *fmt, ...);
+int vprintf(const char *fmt, va_list args);
+#else
+static inline void putc(const char c)
+{
+}
+
+static inline void puts(const char *s)
+{
+}
+
+static inline int __printf(1, 2) printf(const char *fmt, ...)
+{
+	return 0;
+}
+
+static inline int vprintf(const char *fmt, va_list args)
+{
+	return 0;
+}
+#endif
+
+/*
+ * FILE based functions (can only be used AFTER relocation!)
+ */
+#define stdin		0
+#define stdout		1
+#define stderr		2
+#define MAX_FILES	3
+
+/* stderr */
+#define eputc(c)		fputc(stderr, c)
+#define eputs(s)		fputs(stderr, s)
+#define eprintf(fmt, args...)	fprintf(stderr, fmt, ##args)
+
+int __printf(2, 3) fprintf(int file, const char *fmt, ...);
+void fputs(int file, const char *s);
+void fputc(int file, const char c);
+int ftstc(int file);
+int fgetc(int file);
+
+#endif /* __STDIO_H */
-- 
2.7.4