[parisc-linux] followup: Inline Assembly Help request

[jsoe0708@tiscali.be]

Hi all,

Following my investigation to fix the problem of 64bits integer transfer
between kernel and user space (put_user in uaccess.h), I still had a problem:

how to access of the two int (32bit) parts of a long long?

In mips sources I found this interresting stuff:
__put_user_asm_ll32
...
    1:    sw    %1, %2
    2:    sw    %D1, %3
....

which would correspond to what I need but it is not available for hppa.

So I do something like:
...
#define STD_USER(x, ptr)                      \
({                                            \
    unsigned int xh = (unsigned int)(x>>32),  \
                 xl = (unsigned int) (x);     \
    __put_user_asm_64(xh, xl, ptr);           \
})
...

and so 
...
#define __put_user_asm_64(xh, xl, ptr)                      \
        __asm__ __volatile__ (                              \
                "\n1:\tstw\t%2,0(%%sr3,%1)\n"               \
                "2:\tstw\t%3,4(%%sr3,%1)\n"                 \
                "3:\n"                                      \
                "\t.section __ex_table,\"a\"\n"             \
                 "\t.word\t1b\n"                            \
                 "\t.word\t(3b-1b)+1\n"                     \
                 "\t.word\t2b\n"                            \
                 "\t.word\t(3b-2b)+1\n"                     \
                 "\t.previous"                              \
                : "=r"(__pu_err)                            \
                : "r"(ptr), "r"(xh), "r"(xl), "0"(__pu_err))
...

which has a border effect:
tty_ioctl.c: In function `get_termio':
tty_ioctl.c:175: warning: right shift count >= width of type
tty_ioctl.c:175: warning: right shift count >= width of type
tty_ioctl.c:175: warning: right shift count >= width of type
tty_ioctl.c:175: warning: right shift count >= width of type
tty_ioctl.c:175: warning: right shift count >= width of type

Is there some other means somewhere else?

Thanks in advance,
    Joel