diff options
Diffstat (limited to 'c/src/lib/libbsp/powerpc/shared/startup/zerobss.c')
| -rw-r--r-- | c/src/lib/libbsp/powerpc/shared/startup/zerobss.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/c/src/lib/libbsp/powerpc/shared/startup/zerobss.c b/c/src/lib/libbsp/powerpc/shared/startup/zerobss.c new file mode 100644 index 0000000000..d1c62384f2 --- /dev/null +++ b/c/src/lib/libbsp/powerpc/shared/startup/zerobss.c @@ -0,0 +1,28 @@ +/* + * zero the various bss areas. + * + * COPYRIGHT (c) 1989-1998. + * On-Line Applications Research Corporation (OAR). + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.com/license/LICENSE. + * + * Modified to support the MCP750. + * Modifications Copyright (C) 1999 Eric Valette. valette@crf.canon.fr + * + * $Id$ + */ + +#include <string.h> + +void zero_bss() +{ + /* prevent these from being accessed in the short data areas */ + extern unsigned long __bss_start[], __SBSS_START__[], __SBSS_END__[]; + extern unsigned long __SBSS2_START__[], __SBSS2_END__[]; + extern unsigned long __rtems_end[]; + memset(__SBSS_START__, 0, ((unsigned) __SBSS_END__) - ((unsigned)__SBSS_START__)); + memset(__SBSS2_START__, 0, ((unsigned) __SBSS2_END__) - ((unsigned)__SBSS2_START__)); + memset(__bss_start, 0, ((unsigned) __rtems_end) - ((unsigned)__bss_start)); +} |