gdb/shnbsd-nat.c - gdb

Functions defined

Macros defined

Source code

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

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

  5.    Contributed by Wasabi Systems, Inc.

  7.    This file is part of GDB.

  9.    This program is free software; you can redistribute it and/or modify
  10.    it under the terms of the GNU General Public License as published by
  11.    the Free Software Foundation; either version 3 of the License, or
  12.    (at your option) any later version.

  14.    This program is distributed in the hope that it will be useful,
  15.    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16.    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17.    GNU General Public License for more details.

  19.    You should have received a copy of the GNU General Public License
  20.    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

  22. #include "defs.h"
  23. #include "inferior.h"

  25. #include <sys/types.h>
  26. #include <sys/ptrace.h>
  27. #include <machine/reg.h>

  29. #include "sh-tdep.h"
  30. #include "inf-ptrace.h"
  31. #include "regcache.h"


  34. /* Determine if PT_GETREGS fetches this register.  */
  35. ‌#define GETREGS_SUPPLIES(gdbarch, regno) \
  36.   (((regno) >= R0_REGNUM && (regno) <= (R0_REGNUM + 15)) \
  37. || (regno) == gdbarch_pc_regnum (gdbarch) || (regno) == PR_REGNUM \
  38. || (regno) == MACH_REGNUM || (regno) == MACL_REGNUM \
  39. || (regno) == SR_REGNUM)

  41. /* Sizeof `struct reg' in <machine/reg.h>.  */
  42. ‌#define SHNBSD_SIZEOF_GREGS        (21 * 4)

  44. static void
  45. ‌shnbsd_fetch_inferior_registers (struct target_ops *ops,
  46.                                  struct regcache *regcache, int regno)
  47. {
  48.   if (regno == -1 || GETREGS_SUPPLIES (get_regcache_arch (regcache), regno))
  49.     {
  50.       struct reg inferior_registers;

  52.       if (ptrace (PT_GETREGS, ptid_get_pid (inferior_ptid),
  53.                   (PTRACE_TYPE_ARG3) &inferior_registers, 0) == -1)
  54.         perror_with_name (_("Couldn't get registers"));

  56.       sh_corefile_supply_regset (&sh_corefile_gregset, regcache, regno,
  57.                                  (char *) &inferior_registers,
  58.                                  SHNBSD_SIZEOF_GREGS);

  60.       if (regno != -1)
  61.         return;
  62.     }
  63. }

  65. static void
  66. ‌shnbsd_store_inferior_registers (struct target_ops *ops,
  67.                                  struct regcache *regcache, int regno)
  68. {
  69.   if (regno == -1 || GETREGS_SUPPLIES (get_regcache_arch (regcache), regno))
  70.     {
  71.       struct reg inferior_registers;

  73.       if (ptrace (PT_GETREGS, ptid_get_pid (inferior_ptid),
  74.                   (PTRACE_TYPE_ARG3) &inferior_registers, 0) == -1)
  75.         perror_with_name (_("Couldn't get registers"));

  77.       sh_corefile_collect_regset (&sh_corefile_gregset, regcache, regno,
  78.                                   (char *) &inferior_registers,
  79.                                   SHNBSD_SIZEOF_GREGS);

  81.       if (ptrace (PT_SETREGS, ptid_get_pid (inferior_ptid),
  82.                   (PTRACE_TYPE_ARG3) &inferior_registers, 0) == -1)
  83.         perror_with_name (_("Couldn't set registers"));

  85.       if (regno != -1)
  86.         return;
  87.     }
  88. }

  90. /* Provide a prototype to silence -Wmissing-prototypes.  */
  91. void _initialize_shnbsd_nat (void);

  93. void
  94. ‌_initialize_shnbsd_nat (void)
  95. {
  96.   struct target_ops *t;

  98.   t = inf_ptrace_target ();
  99.   t->to_fetch_registers = shnbsd_fetch_inferior_registers;
  100.   t->to_store_registers = shnbsd_store_inferior_registers;
  101.   add_target (t);
  102. }