# HG changeset patch # User Jeremy Fitzhardinge <[EMAIL PROTECTED]> # Date 1199317452 28800 # Node ID f7e7db3facd9406545103164f9be8f9ba1a2b549 # Parent 4d9a413a0f4c1d98dbea704f0366457b5117045d x86: add _AT() macro to conditionally cast
Define _AT(type, value) to conditionally cast a value when compiling C code, but not when used in assembler. Signed-off-by: Jeremy Fitzhardinge <[EMAIL PROTECTED]> --- include/linux/const.h | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/include/linux/const.h b/include/linux/const.h --- a/include/linux/const.h +++ b/include/linux/const.h @@ -7,13 +7,18 @@ * C code. Therefore we cannot annotate them always with * 'UL' and other type specifiers unilaterally. We * use the following macros to deal with this. + * + * Similarly, _AT() will cast an expression with a type in C, but + * leave it unchanged in asm. */ #ifdef __ASSEMBLY__ #define _AC(X,Y) X +#define _AT(T,X) X #else #define __AC(X,Y) (X##Y) #define _AC(X,Y) __AC(X,Y) +#define _AT(T,X) ((T)(X)) #endif #endif /* !(_LINUX_CONST_H) */ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
