Issue in getting Virtual Hardware devices

[Raja Sekhar]

Hello to all,

           I'm working on L4 fiasco. In that I  want to read the virtual
hardware devies. for tha I'm running the code from *
l4/pkg/example/sys/ux-vhw/main.c

***
* 10 #include <l4/sys/ipc.h>
 11 #include <l4/sys/vhw.h>
 12 #include <l4/util/util.h>
 13 #include <l4/util/kip.h>
 14 #include <l4/re/env.h>
 15
 16 #include <stdlib.h>
 17 #include <stdio.h>
 18
 19 static void print_entry(struct l4_vhw_entry *e)
 20 {
 21   printf("type: %d  mem start: %08lx  end: %08lx\n"
 22          "irq: %d pid %d\n",
 23          e->type, e->mem_start, e->mem_size,
 24          e->irq_no, e->provider_pid);
 25 }
 26
 27 int main(void)
 28 {
 29         l4_kernel_info_t *kip = l4re_kip();
 30         struct l4_vhw_descriptor *vhw;
 31         int i;
 32
 33         if (!kip)
 34         {
 35
 36                 printf("KIP not available!\n");
 37                 return 1;
 38         }
 39
 40         vhw = l4_vhw_get(kip);
 41
 42         if(vhw)
 43         {
 44                 printf("kip at %p, vhw at %p\n", kip, vhw);
 45                 printf("magic: %08x, version: %08x, count: %02d\n",
 46                                 vhw->magic, vhw->version, vhw->count);
 47
 48                 for (i = 0; i < vhw->count; i++)
 49                         print_entry(l4_vhw_get_entry(vhw, i));
 50         }
 51         return 0;
 52 }**


*In the above code at *line no 40* after *calling inline function
l4_vhw_get(kip)*  I'm getting *vhw=NULL. *and the definition of inline
function is from* l4sys/include/vhw.h *is as follows*

 80 enum {
 81   L4_VHW_MAGIC = 0x56687765,
 82 };
 83
 84 static inline struct l4_vhw_descriptor *
 85 l4_vhw_get(l4_kernel_info_t *kip) L4_NOTHROW
 86 {
 87   struct l4_vhw_descriptor *v
 88     = (struct l4_vhw_descriptor *)(((unsigned long)kip) +
kip->vhw_offset);
 89
 90   if (v->magic == L4_VHW_MAGIC)
 91     return v;
 92
 93   return NULL;
 94 }

*Here* at line no 90, the v->magic *is having a value of* 0x4BE6344C *which
is not equal to* L4_VHW_MAGIC

*My qestion is why I'm getting different magic value Instead of
0x56687765, and how can I get correct magic value*.
*If there are no virtual hardware device how can i create and integrate
into my system........*
*
*
*
*
*Thanks,
Raja Sekhar
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