sim/common/sim-cpu.c

   1 /* CPU support.
   2    Copyright (C) 1998-2019 Free Software Foundation, Inc.
   3    Contributed by Cygnus Solutions.
   4
   5 This file is part of GDB, the GNU debugger.
   6
   7 This program is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 3 of the License, or
  10 (at your option) any later version.
  11
  12 This program is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 #include "sim-main.h"
  21 #include "bfd.h"
  22
  23 /* Allocate space for all cpus in the simulator.
  24    Space for the cpu must currently exist prior to parsing ARGV.
  25    EXTRA_BYTES is additional space to allocate for the sim_cpu struct.  */
  26 /* ??? wip.  better solution must wait.  */
  27
  28 SIM_RC
  29 sim_cpu_alloc_all (SIM_DESC sd, int ncpus, int extra_bytes)
  30 {
  31   int c;
  32
  33   for (c = 0; c < ncpus; ++c)
  34     STATE_CPU (sd, c) = sim_cpu_alloc (sd, extra_bytes);
  35   return SIM_RC_OK;
  36 }
  37
  38 /* Allocate space for a cpu object.
  39    EXTRA_BYTES is additional space to allocate for the sim_cpu struct.  */
  40
  41 sim_cpu *
  42 sim_cpu_alloc (SIM_DESC sd, int extra_bytes)
  43 {
  44   return zalloc (sizeof (sim_cpu) + extra_bytes);
  45 }
  46
  47 /* Free all resources held by all cpus.  */
  48
  49 void
  50 sim_cpu_free_all (SIM_DESC sd)
  51 {
  52   int c;
  53
  54   for (c = 0; c < MAX_NR_PROCESSORS; ++c)
  55     if (STATE_CPU (sd, c))
  56       sim_cpu_free (STATE_CPU (sd, c));
  57 }
  58
  59 /* Free all resources used by CPU.  */
  60
  61 void
  62 sim_cpu_free (sim_cpu *cpu)
  63 {
  64   free (cpu);
  65 }
  66 \f
  67 /* PC utilities.  */
  68
  69 sim_cia
  70 sim_pc_get (sim_cpu *cpu)
  71 {
  72   return (* CPU_PC_FETCH (cpu)) (cpu);
  73 }
  74
  75 void
  76 sim_pc_set (sim_cpu *cpu, sim_cia newval)
  77 {
  78   (* CPU_PC_STORE (cpu)) (cpu, newval);
  79 }