gdb/gdbserver/nto-x86-low.c - gdb

Global variables defined

Functions defined

Macros defined

Source code

  1. /* QNX Neutrino specific low level interface, for the remote server
  2.    for GDB.
  3.    Copyright (C) 2009-2015 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 "server.h"
  21. #include "nto-low.h"
  22. #include "regdef.h"
  23. #include "regcache.h"

  25. #include <x86/context.h>


  28. /* Definition auto generated from reg-i386.dep.  */
  29. extern void init_registers_i386 ();
  30. extern struct reg *regs_i386;
  31. extern const struct target_desc *tdesc_i386;

  33. ‌const unsigned char x86_breakpoint[] = { 0xCC };
  34. ‌#define x86_breakpoint_len 1

  36. /* Returns offset in appropriate Neutrino's context structure.
  37.    Defined in x86/context.h.
  38.    GDBREGNO is index into regs_i386 array.  It is autogenerated and
  39.    hopefully doesn't change.  */
  40. static int
  41. ‌nto_x86_register_offset (int gdbregno)
  42. {
  43.   if (gdbregno >= 0 && gdbregno < 16)
  44.     {
  45.       X86_CPU_REGISTERS *dummy = (void*)0;
  46.       /* GPRs  */
  47.       switch (gdbregno)
  48.         {
  49.         case 0:
  50.           return (int)&(dummy->eax);
  51.         case 1:
  52.           return (int)&(dummy->ecx);
  53.         case 2:
  54.           return (int)&(dummy->edx);
  55.         case 3:
  56.           return (int)&(dummy->ebx);
  57.         case 4:
  58.           return (int)&(dummy->esp);
  59.         case 5:
  60.           return (int)&(dummy->ebp);
  61.         case 6:
  62.           return (int)&(dummy->esi);
  63.         case 7:
  64.           return (int)&(dummy->edi);
  65.         case 8:
  66.           return (int)&(dummy->eip);
  67.         case 9:
  68.           return (int)&(dummy->efl);
  69.         case 10:
  70.           return (int)&(dummy->cs);
  71.         case 11:
  72.           return (int)&(dummy->ss);
  73. #ifdef __SEGMENTS__
  74.         case 12:
  75.           return (int)&(dummy->ds);
  76.         case 13:
  77.           return (int)&(dummy->es);
  78.         case 14:
  79.           return (int)&(dummy->fs);
  80.         case 15:
  81.           return (int)&(dummy->gs);
  82. #endif
  83.         default:
  84.           return -1;
  85.         }
  86.     }
  87.   return -1;
  88. }

  90. static void
  91. ‌nto_x86_arch_setup (void)
  92. {
  93.   init_registers_i386 ();
  94.   the_low_target.num_regs = 16;
  95.   nto_tdesc = tdesc_i386;
  96. }

  98. ‌struct nto_target_ops the_low_target =
  99. {
  100.   nto_x86_arch_setup,
  101.   0, /* num_regs */
  102.   nto_x86_register_offset,
  103.   x86_breakpoint,
  104.   x86_breakpoint_len
  105. };