gdb/gdbserver/tdesc.c

   1 /* Copyright (C) 2012-2015 Free Software Foundation, Inc.
   2
   3    This file is part of GDB.
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 3 of the License, or
   8    (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  17
  18 #include "server.h"
  19 #include "tdesc.h"
  20 #include "regdef.h"
  21
  22 void
  23 init_target_desc (struct target_desc *tdesc)
  24 {
  25   int offset, i;
  26
  27   offset = 0;
  28   for (i = 0; i < tdesc->num_registers; i++)
  29     {
  30       tdesc->reg_defs[i].offset = offset;
  31       offset += tdesc->reg_defs[i].size;
  32     }
  33
  34   tdesc->registers_size = offset / 8;
  35
  36   /* Make sure PBUFSIZ is large enough to hold a full register
  37      packet.  */
  38   gdb_assert (2 * tdesc->registers_size + 32 <= PBUFSIZ);
  39 }
  40
  41 #ifndef IN_PROCESS_AGENT
  42
  43 static const struct target_desc default_description;
  44
  45 void
  46 copy_target_description (struct target_desc *dest,
  47                          const struct target_desc *src)
  48 {
  49   dest->reg_defs = src->reg_defs;
  50   dest->num_registers = src->num_registers;
  51   dest->expedite_regs = src->expedite_regs;
  52   dest->registers_size = src->registers_size;
  53   dest->xmltarget = src->xmltarget;
  54 }
  55
  56 const struct target_desc *
  57 current_target_desc (void)
  58 {
  59   if (current_thread == NULL)
  60     return &default_description;
  61
  62   return current_process ()->tdesc;
  63 }
  64
  65 #endif