That's a kernel function, not available to application programs.
Generally all of sys/ddi.h an sys/sunddi.h (and most other things in
sys/, but not all of them) are available only in the kernel. These are
things that are documented in section 9 of the system manual -- they
exist for folks writing device drivers and kernel modules.
- Garret
On Fri, 2010-07-23 at 17:14 +0800, 邓宁 wrote:
>
> Dear solaris gurus,
>
> I have a stupid question when writing a program under solaris. In the
> program, I want to use the system function ddi_fls() and ddi_ffs().
>
> From its description at
> http://docs.sun.com/app/docs/doc/819-2256/ddi-ffs-9f?q=StarOffice&s=t&a=view,
> I think it can meet my requirement.
>
> I haven't use a solaris function inside the user application before.
> Yet I've tried it this way:
>
> #include <sys/conf.h>
>
> #include <sys/ddi.h>
>
> #include <sys/sunddi.h>
>
> #include <stdio.h>
>
>
> void main()
> {
> long bitmap = 8300; //binary format: 10 0000 0110 1100
>
> //try ddi_ffs() and ddi_fls()
>
>
> printf("The index of the first set bit in the bitmap is:%dth\n",
> ddi_ffs(bitmap));
>
> printf("The index of the last set bit in the bitmap is:%dth\n",
> ddi_fls(bitmap));
>
> }
>
> Then, I compiled it by:
>
> "gcc -o test.o test.c"
>
> and got some error at linking stage:
>
> Undefined symbol first referenced in
> file
> ddi_ffs /var/tmp//ccu...
> ddi_fls /var/tmp//...
>
> ld: fatal: symbol referencing errors.
>
>
> Can you show me how to use the ddi_XXXX() function in my userland
> code?
>
>
> Thank you in advance.
>
> --
> Regards
> Ning Deng
>
> School Of Computer Science and Technology
> Beijng Institute of Technology, China, 100081
> [email protected]
>
> _______________________________________________
> driver-discuss mailing list
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