gnu/dist/gdb6/sim/common/sim-cpu.c

   1 /* CPU support.
   2    Copyright (C) 1998 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 2, or (at your option)
  10 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 along
  18 with this program; if not, write to the Free Software Foundation, Inc.,
  19 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  20
  21 #include "sim-main.h"
  22 #include "bfd.h"
  23
  24 /* Allocate space for all cpus in the simulator.
  25    Space for the cpu must currently exist prior to parsing ARGV.
  26    EXTRA_BYTES is additional space to allocate for the sim_cpu struct.  */
  27 /* ??? wip.  better solution must wait.  */
  28
  29 SIM_RC
  30 sim_cpu_alloc_all (SIM_DESC sd, int ncpus, int extra_bytes)
  31 {
  32   int c;
  33
  34   for (c = 0; c < ncpus; ++c)
  35     STATE_CPU (sd, c) = sim_cpu_alloc (sd, extra_bytes);
  36   return SIM_RC_OK;
  37 }
  38
  39 /* Allocate space for a cpu object.
  40    EXTRA_BYTES is additional space to allocate for the sim_cpu struct.  */
  41
  42 sim_cpu *
  43 sim_cpu_alloc (SIM_DESC sd, int extra_bytes)
  44 {
  45   return zalloc (sizeof (sim_cpu) + extra_bytes);
  46 }
  47
  48 /* Free all resources held by all cpus.  */
  49
  50 void
  51 sim_cpu_free_all (SIM_DESC sd)
  52 {
  53   int c;
  54
  55   for (c = 0; c < MAX_NR_PROCESSORS; ++c)
  56     if (STATE_CPU (sd, c))
  57       sim_cpu_free (STATE_CPU (sd, c));
  58 }
  59
  60 /* Free all resources used by CPU.  */
  61
  62 void
  63 sim_cpu_free (sim_cpu *cpu)
  64 {
  65   zfree (cpu);
  66 }
  67 \f
  68 /* PC utilities.  */
  69
  70 sim_cia
  71 sim_pc_get (sim_cpu *cpu)
  72 {
  73   return (* CPU_PC_FETCH (cpu)) (cpu);
  74 }
  75
  76 void
  77 sim_pc_set (sim_cpu *cpu, sim_cia newval)
  78 {
  79   (* CPU_PC_STORE (cpu)) (cpu, newval);
  80 }