From 08330bf0be8fed443402ffd1664b2ca4d16b6f8e Mon Sep 17 00:00:00 2001
From: Joel Sherrill <joel.sherrill@OARcorp.com>
Date: Thu, 27 Jul 2000 01:04:11 +0000
Subject: Port of RTEMS to the ARM processor family by Eric Valette
 <valette@crf.canon.fr> and Emmanuel Raguet <raguet@crf.canon.fr> of Canon CRF
 - Communication Dept.  This port includes a basic BSP that is sufficient to
 link hello world.

---
 c/src/lib/libbsp/arm/shared/io/printk.c | 113 ++++++++++++++++++++++++++++++++
 1 file changed, 113 insertions(+)
 create mode 100644 c/src/lib/libbsp/arm/shared/io/printk.c

(limited to 'c/src/lib/libbsp/arm/shared/io/printk.c')

diff --git a/c/src/lib/libbsp/arm/shared/io/printk.c b/c/src/lib/libbsp/arm/shared/io/printk.c
new file mode 100644
index 0000000000..d53699a3de
--- /dev/null
+++ b/c/src/lib/libbsp/arm/shared/io/printk.c
@@ -0,0 +1,113 @@
+/*-------------------------------------------------------------------------+
+| printk.c - ARM BSP 
++--------------------------------------------------------------------------+
+|
+|   COPYRIGHT (c) 2000 Canon Research France SA.
+|   Emmanuel Raguet, mailto:raguet@crf.canon.fr
+| 
+|   The license and distribution terms for this file may be
+|   found in found in the file LICENSE in this distribution or at
+|   http://www.OARcorp.com/rtems/license.html.
+|
+|  $Id$
++--------------------------------------------------------------------------*/
+
+
+#include <stdarg.h>
+#include <stdio.h>
+#include <bspio.h>
+
+/*-------------------------------------------------------------------------+
+|         Function: printNum
+|      Description: print number in a given base.
+| Global Variables: None.
+|        Arguments: num - number to print, base - base used to print the number.
+|          Returns: Nothing. 
++--------------------------------------------------------------------------*/
+static void
+printNum(long unsigned int num, int base, int sign)
+{
+  long unsigned int n;
+  int count;
+  char toPrint[20];
+
+  if ( (sign == 1) && ((long)num <  0) ) {
+    BSP_output_char('-');
+    num = -num;
+  }
+  
+  count = 0;
+  while ((n = num / base) > 0) {
+    toPrint[count++] = (num - (n*base));
+    num = n ;
+  }
+  toPrint[count++] = num;
+
+  for (n = 0; n < count; n++){
+    BSP_output_char("0123456789ABCDEF"[(int)(toPrint[count-(n+1)])]);
+  }
+} /* printNum */
+
+
+/*-------------------------------------------------------------------------+
+|         Function: printk
+|      Description: a simplified version of printf intended for use when the
+                    console is not yet initialized or in ISR's.
+| Global Variables: None.
+|        Arguments: as in printf: fmt - format string, ... - unnamed arguments.
+|          Returns: Nothing. 
++--------------------------------------------------------------------------*/
+void
+printk(char *fmt, ...)
+{
+  va_list  ap;      /* points to each unnamed argument in turn */
+  char     c, *str;
+  int      lflag, base, sign;
+
+  _CPU_ISR_Disable(level);
+ 
+  va_start(ap, fmt); /* make ap point to 1st unnamed arg */
+  for (; *fmt != '\0'; fmt++)
+  {
+    lflag = 0;
+    base  = 0;
+    sign = 0;
+    if (*fmt == '%')
+    {
+      if ((c = *++fmt) == 'l')
+      {
+        lflag = 1;
+        c = *++fmt;
+      }
+      switch (c)
+      {
+        case 'o': case 'O': base = 8; sign = 0; break;
+        case 'd': case 'D': base = 10; sign = 1; break;
+        case 'u': case 'U': base = 10; sign = 0; break;
+        case 'x': case 'X': base = 16; sign = 0; break;
+        case 's':
+          for (str = va_arg(ap, char *); *str; str++) 
+            BSP_output_char(*str);
+          break;
+        case 'c':
+          BSP_output_char(va_arg(ap, char));
+          break;
+        default:
+          BSP_output_char(c);
+          break;
+      } /* switch*/
+
+      if (base)
+        printNum(lflag ? va_arg(ap, long int) : (long int)va_arg(ap, int),
+                 base, sign);
+    }
+    else
+    {
+      BSP_output_char(*fmt);
+    }
+  }
+  va_end(ap); /* clean up when done */
+  _CPU_ISR_Enable(level);
+
+} /* printk */
+
-- 
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