coregrind/m_gdbserver/remote-utils-shared.c

   1 /* Shared remote utility routines for the remote server for GDB.
   2    Copyright (C) 1986, 1989, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
   3    2001, 2002, 2003, 2004, 2005, 2006, 2011
   4    Free Software Foundation, Inc.
   5
   6    This file is based on parts of GDB.
   7    It has been modified to integrate it in valgrind
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 2 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program; if not, write to the Free Software
  21    Foundation, Inc., 51 Franklin Street, Fifth Floor,
  22    Boston, MA 02110-1301, USA.  */
  23
  24 /* Note this is shared code between vgdb.c and m_gdbserver/server.c.
  25    It is used directly by vgdb.c using libc functions.
  26    There is another file m_gdbserver/remote-utils-shared-gdbserver.c
  27    which first redefines the libc functions to use valgrind VG_ variants
  28    that is used with server.c.  */
  29
  30 #include "remote-utils-shared.h"
  31
  32 /* When included through remote-utils-shared-gdbserver.c strlen
  33    is already defined to make to VG_(strlen). Otherwise we are
  34    building for vgdb, which will use the standard libc functions.  */
  35 #ifndef strlen
  36 #include <string.h>
  37 #endif
  38
  39 /* Convert number NIB to a hex digit.  */
  40 int tohex (int nib)
  41 {
  42    if (nib < 10)
  43       return '0' + nib;
  44    else
  45       return 'a' + nib - 10;
  46 }
  47
  48 int hexify (char *hex, const char *bin, int count)
  49 {
  50    int i;
  51
  52    /* May use a length, or a nul-terminated string as input. */
  53    if (count == 0)
  54       count = strlen (bin);
  55
  56   for (i = 0; i < count; i++) {
  57      *hex++ = tohex ((*bin >> 4) & 0xf);
  58      *hex++ = tohex (*bin++ & 0xf);
  59   }
  60   *hex = 0;
  61   return i;
  62 }