[XenAccess-devel] How to get the code section of a process

[Daniele S. <da...@ya...>]

Is it possible to print a whole section of a process
from a domain (for example the code section)?

For example (modifying process-data.c):

-----------------------------------------
unsigned long vaddr;
.....

    for(vaddr = taskaddr.start_code; vaddr <=
taskaddr.start_end; vaddr++)
    { 
      memory = xa_access_user_virtual_address(&xai,
vaddr, &offset, pid);
      if (NULL == memory){
	 perror("failed to map memory");
	 goto error_exit;
      }
      print_hex(memory, XA_PAGE_SIZE);
    }
....
-----------------------------------------

I'm not sure if the addresses found in
"xa_linux_taskaddr_t" are page-frame identifiers or
virtual addresses.
I've looked through the code, and I see that the
virtual address (vaddr) is first mapped to the
physical address and then to the physical frame and
then "xc_map_foreign_range" is called with the
parameter size=XC_PAGE_SIZE, and it returns a void *
(through mmap) that points to a frame. Is that true?

Or should the previous code be something like:
vaddr = taskaddr.start_code; vaddr <=
taskaddr.start_end; vaddr+=XC_PAGE_SIZE)

I hope I've made myself clear :)
Thanks!


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