gdb/sparc64fbsd-nat.c - gdb

Functions defined

Source code

  1. /* Native-dependent code for FreeBSD/sparc64.

  3.    Copyright (C) 2003-2015 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 "fbsd-nat.h"
  25. #include "sparc64-tdep.h"
  26. #include "sparc-nat.h"


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

  31. #include <sys/types.h>
  32. #include <machine/pcb.h>

  34. #include "bsd-kvm.h"

  36. static int
  37. ‌sparc64fbsd_kvm_supply_pcb (struct regcache *regcache, struct pcb *pcb)
  38. {
  39.   /* The following is true for FreeBSD 5.4:

  41.      The pcb contains %sp and %pc.  Since the register windows are
  42.      explicitly flushed, we can find the `local' and `in' registers on
  43.      the stack.  */

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

  49.   regcache_raw_supply (regcache, SPARC_SP_REGNUM, &pcb->pcb_sp);
  50.   regcache_raw_supply (regcache, SPARC64_PC_REGNUM, &pcb->pcb_pc);

  52.   /* Synthesize %npc.  */
  53.   pcb->pcb_pc += 4;
  54.   regcache_raw_supply (regcache, SPARC64_NPC_REGNUM, &pcb->pcb_pc);

  56.   /* Read `local' and `in' registers from the stack.  */
  57.   sparc_supply_rwindow (regcache, pcb->pcb_sp, -1);

  59.   return 1;
  60. }


  63. /* Provide a prototype to silence -Wmissing-prototypes.  */
  64. void _initialize_sparc64fbsd_nat (void);

  66. void
  67. ‌_initialize_sparc64fbsd_nat (void)
  68. {
  69.   struct target_ops *t;

  71.   /* Add some extra features to the generic SPARC target.  */
  72.   t = sparc_target ();
  73.   t->to_pid_to_exec_file = fbsd_pid_to_exec_file;
  74.   t->to_find_memory_regions = fbsd_find_memory_regions;
  75.   add_target (t);

  77.   sparc_gregmap = &sparc64fbsd_gregmap;

  79.   /* Support debugging kernel virtual memory images.  */
  80.   bsd_kvm_add_target (sparc64fbsd_kvm_supply_pcb);
  81. }