[Bug inline-asm/33600] [4.3 Regression] Breakage caused by the fix to PR33552

["segher at kernel dot crashing dot org" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #4 from segher at kernel dot crashing dot org  2007-09-30 14:07 -------
The original code is: (arch/i386/lib/usercopy.c):

/* Generic arbitrary sized copy.  */
#define __copy_user(to,from,size)                                       \
do {                                                                    \
        int __d0, __d1, __d2;                                           \
        __asm__ __volatile__(                                           \
                "       cmp  $7,%0\n"                                   \
                "       jbe  1f\n"                                      \
                "       movl %1,%0\n"                                   \
                "       negl %0\n"                                      \
                "       andl $7,%0\n"                                   \
                "       subl %0,%3\n"                                   \
                "4:     rep; movsb\n"                                   \
                "       movl %3,%0\n"                                   \
                "       shrl $2,%0\n"                                   \
                "       andl $3,%3\n"                                   \
                "       .align 2,0x90\n"                                \
                "0:     rep; movsl\n"                                   \
                "       movl %3,%0\n"                                   \
                "1:     rep; movsb\n"                                   \
                "2:\n"                                                  \
                ".section .fixup,\"ax\"\n"                              \
                "5:     addl %3,%0\n"                                   \
                "       jmp 2b\n"                                       \
                "3:     lea 0(%3,%0,4),%0\n"                            \
                "       jmp 2b\n"                                       \
                ".previous\n"                                           \
                ".section __ex_table,\"a\"\n"                           \
                "       .align 4\n"                                     \
                "       .long 4b,5b\n"                                  \
                "       .long 0b,3b\n"                                  \
                "       .long 1b,2b\n"                                  \
                ".previous"                                             \
                : "=&c"(size), "=&D" (__d0), "=&S" (__d1), "=r"(__d2)   \
                : "3"(size), "0"(size), "1"(to), "2"(from)              \
                : "memory");                                            \
} while (0)


-- 

segher at kernel dot crashing dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |segher at kernel dot
                   |                            |crashing dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33600