gdb/gdbserver/linux-x86-64-low.c

   1 /* GNU/Linux/x86-64 specific low level interface, for the remote server
   2    for GDB.
   3    Copyright 2002
   4    Free Software Foundation, Inc.
   5
   6    This file is part of GDB.
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 2 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 59 Temple Place - Suite 330,
  21    Boston, MA 02111-1307, USA.  */
  22
  23 #include "server.h"
  24 #include "linux-low.h"
  25 #include "i387-fp.h"
  26
  27 #include <sys/reg.h>
  28 #include <sys/procfs.h>
  29 #include <sys/ptrace.h>
  30
  31 static int regmap[] = {
  32   RAX, RDX, RCX, RBX,
  33   RSI, RDI, RBP, RSP,
  34   R8, R9, R10, R11,
  35   R12, R13, R14, R15,
  36   RIP, EFLAGS
  37 };
  38
  39 static void
  40 x86_64_fill_gregset (void *buf)
  41 {
  42   int i;
  43
  44   for (i = 0; i < 18; i++)
  45     collect_register (i, ((char *) buf) + regmap[i]);
  46 }
  47
  48 static void
  49 x86_64_store_gregset (void *buf)
  50 {
  51   int i;
  52
  53   for (i = 0; i < 18; i++)
  54     supply_register (i, ((char *) buf) + regmap[i]);
  55 }
  56
  57 static void
  58 x86_64_fill_fpregset (void *buf)
  59 {
  60   i387_cache_to_fxsave (buf);
  61 }
  62
  63 static void
  64 x86_64_store_fpregset (void *buf)
  65 {
  66   i387_fxsave_to_cache (buf);
  67 }
  68
  69
  70 struct regset_info target_regsets[] = {
  71   { PTRACE_GETREGS, PTRACE_SETREGS, sizeof (elf_gregset_t),
  72     x86_64_fill_gregset, x86_64_store_gregset },
  73   { PTRACE_GETFPREGS, PTRACE_SETFPREGS, sizeof (elf_fpregset_t),
  74     x86_64_fill_fpregset, x86_64_store_fpregset },
  75   { 0, 0, -1, NULL, NULL }
  76 };