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* [U-Boot] [PATCH 1/4] COMMON: Add __stringify() function
@ 2012-09-23 15:41 Marek Vasut
  2012-09-23 15:41 ` [U-Boot] [PATCH 2/4] COMMON: Use __stringify() instead of xstr() Marek Vasut
                   ` (4 more replies)
  0 siblings, 5 replies; 9+ messages in thread
From: Marek Vasut @ 2012-09-23 15:41 UTC (permalink / raw)
  To: u-boot

Copied from Linux kernel:
commit 8f7c2c37319a81ef4c2bfdec67b1ccd5744d97e4
Date:   Wed Apr 8 16:58:57 2009 +0800

This function converts static number to string in preprocessor.
This is useful as it allows higher usage of puts() in favour of printf()

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Wolfgang Denk <wd@denx.de>
---
 include/common.h          |    1 +
 include/linux/stringify.h |   12 ++++++++++++
 2 files changed, 13 insertions(+), 0 deletions(-)
 create mode 100644 include/linux/stringify.h

diff --git a/include/common.h b/include/common.h
index 55025c0..9937a57 100644
--- a/include/common.h
+++ b/include/common.h
@@ -39,6 +39,7 @@ typedef volatile unsigned char	vu_char;
 #include <linux/bitops.h>
 #include <linux/types.h>
 #include <linux/string.h>
+#include <linux/stringify.h>
 #include <asm/ptrace.h>
 #include <stdarg.h>
 #if defined(CONFIG_PCI) && (defined(CONFIG_4xx) && !defined(CONFIG_AP1000))
diff --git a/include/linux/stringify.h b/include/linux/stringify.h
new file mode 100644
index 0000000..841cec8
--- /dev/null
+++ b/include/linux/stringify.h
@@ -0,0 +1,12 @@
+#ifndef __LINUX_STRINGIFY_H
+#define __LINUX_STRINGIFY_H
+
+/* Indirect stringification.  Doing two levels allows the parameter to be a
+ * macro itself.  For example, compile with -DFOO=bar, __stringify(FOO)
+ * converts to "bar".
+ */
+
+#define __stringify_1(x...)	#x
+#define __stringify(x...)	__stringify_1(x)
+
+#endif	/* !__LINUX_STRINGIFY_H */
-- 
1.7.7.6

^ permalink raw reply related	[flat|nested] 9+ messages in thread

end of thread, other threads:[~2012-09-27 15:08 UTC | newest]

Thread overview: 9+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2012-09-23 15:41 [U-Boot] [PATCH 1/4] COMMON: Add __stringify() function Marek Vasut
2012-09-23 15:41 ` [U-Boot] [PATCH 2/4] COMMON: Use __stringify() instead of xstr() Marek Vasut
2012-09-23 15:41 ` [U-Boot] [PATCH 3/4] COMMON: Use __stringify() instead of MK_STR() Marek Vasut
2012-09-23 15:41 ` [U-Boot] [PATCH 4/4] COMMON: Use __stringify() instead of rest of implementations Marek Vasut
2012-09-23 17:02 ` [U-Boot] [PATCH 1/4] COMMON: Add __stringify() function Albert ARIBAUD
2012-09-23 18:21   ` Marek Vasut
2012-09-23 21:38     ` Albert ARIBAUD
2012-09-23 21:54       ` Marek Vasut
2012-09-27 15:08 ` [U-Boot] [PATCH 1/4 V2] " Marek Vasut

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