C++ (Cpp) target_read_partial Examples

Example #1

File: auxv.c Project: mbref/gdb-65-microblaze

/* Read all the auxv data into a contiguous xmalloc'd buffer,
   stored in *DATA.  Return the size in bytes of this data.
   If zero, there is no data and *DATA is null.
   if < 0, there was an error and *DATA is null.  */
LONGEST
target_auxv_read (struct target_ops *ops, gdb_byte **data)
{
  size_t auxv_alloc = 512, auxv_pos = 0;
  gdb_byte *auxv = xmalloc (auxv_alloc);
  int n;

  while (1)
    {
      n = target_read_partial (ops, TARGET_OBJECT_AUXV,
			       NULL, &auxv[auxv_pos], 0,
			       auxv_alloc - auxv_pos);
      if (n <= 0)
	break;
      auxv_pos += n;
      if (auxv_pos < auxv_alloc) /* Read all there was.  */
	break;
      gdb_assert (auxv_pos == auxv_alloc);
      auxv_alloc *= 2;
      auxv = xrealloc (auxv, auxv_alloc);
    }

  if (auxv_pos == 0)
    {
      xfree (auxv);
      *data = NULL;
      return n;
    }

  *data = auxv;
  return auxv_pos;
}

Example #2

static void
gdb_kod_query (char *arg, char *result, int *maxsiz)
{
  LONGEST bufsiz = 0;

  /* Check if current target has remote_query capabilities.  If not,
     it does not have kod either.  */
  bufsiz = target_read_partial (&current_target, TARGET_OBJECT_KOD,
				NULL, NULL, 0, 0);
  if (bufsiz < 0)
    {
      strcpy (result,
              "ERR: Kernel Object Display not supported by current target\n");
      return;
    }

  /* Just get the maximum buffer size.  */

  /* Check if *we* were called just for getting the buffer size.  */
  if (*maxsiz == 0)
    {
      *maxsiz = bufsiz;
      strcpy (result, "OK");
      return;
    }

  /* Check if caller can handle a buffer this large, if not, adjust.  */
  if (bufsiz > *maxsiz)
    bufsiz = *maxsiz;

  /* See if buffer can hold the query (usually it can, as the query is
     short).  */
  if (strlen (arg) >= bufsiz)
    error ("kod: query argument too long");

  /* Send actual request.  */
  if (target_read_partial (&current_target, TARGET_OBJECT_KOD,
			   arg, result, 0, bufsiz) < 0)
    strcpy (result, "ERR: remote query failed");
}

Example #3

File: sparc-tdep.c Project: DonCN/haiku

ULONGEST
sparc_fetch_wcookie (void)
{
  struct target_ops *ops = &current_target;
  char buf[8];
  int len;

  len = target_read_partial (ops, TARGET_OBJECT_WCOOKIE, NULL, buf, 0, 8);
  if (len == -1)
    return 0;

  /* We should have either an 32-bit or an 64-bit cookie.  */
  gdb_assert (len == 4 || len == 8);

  return extract_unsigned_integer (buf, len);
}

Example #4

File: checkpoint.c Project: cooljeanius/apple-gdb-1824

/* Get a block from the inferior and save it: */
void
memcache_get(struct checkpoint *cp, ULONGEST addr, int len)
{
  struct memcache *mc;
  int actual;

  mc = (struct memcache *)xmalloc(sizeof(struct memcache));
  mc->startaddr = addr;
  mc->len = len;
  mc->cache = (gdb_byte *)xmalloc(len);

  mc->next = cp->mem;
  cp->mem = mc;

  actual = (int)target_read_partial(&current_target, TARGET_OBJECT_MEMORY,
                                    NULL, mc->cache, addr, len);
#if defined(DEBUG) || defined(_DEBUG)
  printf("cached %d (orig %d) bytes at 0x%llx\n", actual, len, addr);
#endif /* DEBUG || _DEBUG */

  mc->cache = (gdb_byte *)xrealloc(mc->cache, actual);

  mc->len = actual;
}