cpukit, testsuite: Add rtems_printf and rtems_printer support.

This change adds rtems_printf and related functions and wraps the
RTEMS print plugin support into a user API. All references to the
plugin are removed and replaced with the rtems_printer interface.

Printk and related functions are made to return a valid number of
characters formatted and output.

The function attribute to check printf functions has been added
to rtems_printf and printk. No changes to remove warrnings are part
of this patch set.

The testsuite has been moved over to the rtems_printer. The testsuite
has a mix of rtems_printer access and direct print control via the
tmacros.h header file. The support for begink/endk has been removed
as it served no purpose and only confused the code base. The testsuite
has not been refactored to use rtems_printf. This is future work.

1 files changed, 5 insertions, 3 deletions

diff --git a/cpukit/libcsupport/src/putk.c b/cpukit/libcsupport/src/putk.c
index 2532a64500..76fa8b0040 100644
--- a/cpukit/libcsupport/src/putk.c
+++ b/cpukit/libcsupport/src/putk.c
@@ -1,7 +1,7 @@
 /**
  *  @file
  *
- *  @brief Write Character to Stream 
+ *  @brief Write Character to Stream
  *  @ingroup libcsupport
  */
 
@@ -23,11 +23,13 @@
 /**
  * Kernel putk (e.g. puts) function requiring minimal infrastrure.
  */
-void putk(const char *s)
+int putk(const char *s)
 {
   const char *p;
+  int len_out = 0;
 
-  for (p=s ; *p ; p++ )
+  for (p=s ; *p ; p++, len_out++ )
     BSP_output_char(*p);
   BSP_output_char('\n');
+  return len_out + 1;
 }