On Wed, 19 Oct 2011, Dmitry Kasatkin wrote:
Adds the multi-precision-integer maths library which was originally taken
from GnuPG and ported to the kernel by (among others) David Howells.
This version is taken from Fedora kernel 2.6.32-71.14.1.el6.
The difference is that checkpatch reported errors and warnings have been fixed.
This library is used to implemenet RSA digital signature verification
used in IMA/EVM integrity protection subsystem.
--- /dev/null
+++ b/lib/mpi/longlong.h
+ /* If udiv_qrnnd was not defined for this processor, use __udiv_qrnnd_c. */
+#if !defined(udiv_qrnnd)
+#define UDIV_NEEDS_NORMALIZATION 1
+#define udiv_qrnnd __udiv_qrnnd_c
+#endif
+
+#undef count_leading_zeros
Why is this #undef here? It's not present in mpi/longlong.h from Ubuntu's
gnupg-1.4.10, and causing ...
+#if !defined(count_leading_zeros)
+ extern
+#ifdef __STDC__
+ const
+#endif
+ unsigned char __clz_tab[];
+#define count_leading_zeros(count, x) \
+do { \
+ UWtype __xr = (x); \
+ UWtype __a; \
+ \
+ if (W_TYPE_SIZE <= 32) { \
+ __a = __xr < ((UWtype) 1 << 2*__BITS4) \
+ ? (__xr < ((UWtype) 1 << __BITS4) ? 0 : __BITS4) \
+ : (__xr < ((UWtype) 1 << 3*__BITS4) ? 2*__BITS4 : 3*__BITS4); \
+ } \
+ else { \
+ for (__a = W_TYPE_SIZE - 8; __a > 0; __a -= 8) \
+ if (((__xr >> __a) & 0xff) != 0) \
+ break; \
+ } \
+ \
+ (count) = W_TYPE_SIZE - (__clz_tab[__xr >> __a] + __a); \
+} while (0)
+ /* This version gives a well-defined value for zero. */
+#define COUNT_LEADING_ZEROS_0 W_TYPE_SIZE
lib/mpi/longlong.h:1483:1: warning: "COUNT_LEADING_ZEROS_0" redefined
lib/mpi/longlong.h:610:1: warning: this is the location of the previous definition
on m68k/allmodconfig.
I'm also wondering why this warning is not seen on other arches, e.g. PPC
#defines COUNT_LEADING_ZEROS_0 to 32, just like m68k.
+#endif
I suppose the plan is to clean up this header file, as lots of its
functionality is already present in the kernel sources in some other way
(e.g. arch/m68k/lib/muldi3.c)?
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
--
To unsubscribe from this list: send the line "unsubscribe linux-m68k" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
