arch/tile: support building big-endian kernel
The toolchain supports big-endian mode now, so add support for building
the kernel to run big-endian as well.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
diff --git a/arch/tile/lib/memchr_64.c b/arch/tile/lib/memchr_64.c
index 84fdc8d..6f867db 100644
--- a/arch/tile/lib/memchr_64.c
+++ b/arch/tile/lib/memchr_64.c
@@ -15,6 +15,7 @@
#include <linux/types.h>
#include <linux/string.h>
#include <linux/module.h>
+#include "string-endian.h"
void *memchr(const void *s, int c, size_t n)
{
@@ -39,11 +40,8 @@
/* Read the first word, but munge it so that bytes before the array
* will not match goal.
- *
- * Note that this shift count expression works because we know
- * shift counts are taken mod 64.
*/
- before_mask = (1ULL << (s_int << 3)) - 1;
+ before_mask = MASK(s_int);
v = (*p | before_mask) ^ (goal & before_mask);
/* Compute the address of the last byte. */
@@ -65,7 +63,7 @@
/* We found a match, but it might be in a byte past the end
* of the array.
*/
- ret = ((char *)p) + (__insn_ctz(bits) >> 3);
+ ret = ((char *)p) + (CFZ(bits) >> 3);
return (ret <= last_byte_ptr) ? ret : NULL;
}
EXPORT_SYMBOL(memchr);