gdb/sparcnbsd-nat.c - gdb

Functions defined

Source code

  1. /* Native-dependent code for NetBSD/sparc.

  3.    Copyright (C) 2002-2015 Free Software Foundation, Inc.

  5.    This file is part of GDB.

  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.

  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.

  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/>.  */

  20. #include "defs.h"
  21. #include "regcache.h"
  22. #include "target.h"

  24. #include "sparc-tdep.h"
  25. #include "sparc-nat.h"

  27. /* Support for debugging kernel virtual memory images.  */

  29. #include <sys/types.h>
  30. #include <machine/pcb.h>

  32. #include "bsd-kvm.h"

  34. static int
  35. ‌sparc32nbsd_supply_pcb (struct regcache *regcache, struct pcb *pcb)
  36. {
  37.   /* The following is true for NetBSD 1.6.2:

  39.      The pcb contains %sp, %pc, %psr and %wim.  From this information
  40.      we reconstruct the register state as it would look when we just
  41.      returned from cpu_switch().  */

  43.   /* The stack pointer shouldn't be zero.  */
  44.   if (pcb->pcb_sp == 0)
  45.     return 0;

  47.   regcache_raw_supply (regcache, SPARC_SP_REGNUM, &pcb->pcb_sp);
  48.   regcache_raw_supply (regcache, SPARC_O7_REGNUM, &pcb->pcb_pc);
  49.   regcache_raw_supply (regcache, SPARC32_PSR_REGNUM, &pcb->pcb_psr);
  50.   regcache_raw_supply (regcache, SPARC32_WIM_REGNUM, &pcb->pcb_wim);
  51.   regcache_raw_supply (regcache, SPARC32_PC_REGNUM, &pcb->pcb_pc);

  53.   sparc_supply_rwindow (regcache, pcb->pcb_sp, -1);

  55.   return 1;
  56. }


  59. /* Provide a prototype to silence -Wmissing-prototypes.  */
  60. void _initialize_sparcnbsd_nat (void);

  62. void
  63. ‌_initialize_sparcnbsd_nat (void)
  64. {
  65.   sparc_gregmap = &sparc32nbsd_gregmap;
  66.   sparc_fpregmap = &sparc32_bsd_fpregmap;

  68.   /* We've got nothing to add to the generic SPARC target.  */
  69.   add_target (sparc_target ());

  71.   /* Support debugging kernel virtual memory images.  */
  72.   bsd_kvm_add_target (sparc32nbsd_supply_pcb);
  73. }