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 #define X86_64_NUM_GREGS 22
  32
  33 static int x86_64_regmap[X86_64_NUM_GREGS] = {
  34   RAX * 8, RBX * 8, RCX * 8, RDX * 8,
  35   RSI * 8, RDI * 8, RBP * 8, RSP * 8,
  36   R8 * 8, R9 * 8, R10 * 8, R11 * 8,
  37   R12 * 8, R13 * 8, R14 * 8, R15 * 8,
  38   RIP * 8, EFLAGS * 8,
  39   DS * 8, ES * 8, FS * 8, GS * 8
  40 };
  41
  42 static void
  43 x86_64_fill_gregset (void *buf)
  44 {
  45   int i;
  46
  47   for (i = 0; i < X86_64_NUM_GREGS; i++)
  48     collect_register (i, ((char *) buf) + x86_64_regmap[i]);
  49 }
  50
  51 static void
  52 x86_64_store_gregset (const void *buf)
  53 {
  54   int i;
  55
  56   for (i = 0; i < X86_64_NUM_GREGS; i++)
  57     supply_register (i, ((char *) buf) + x86_64_regmap[i]);
  58 }
  59
  60 static void
  61 x86_64_fill_fpregset (void *buf)
  62 {
  63   i387_cache_to_fxsave (buf);
  64 }
  65
  66 static void
  67 x86_64_store_fpregset (const void *buf)
  68 {
  69   i387_fxsave_to_cache (buf);
  70 }
  71
  72 struct regset_info target_regsets[] = {
  73   { PTRACE_GETREGS, PTRACE_SETREGS, sizeof (elf_gregset_t),
  74     GENERAL_REGS,
  75     x86_64_fill_gregset, x86_64_store_gregset },
  76   { PTRACE_GETFPREGS, PTRACE_SETFPREGS, sizeof (elf_fpregset_t),
  77     FP_REGS,
  78     x86_64_fill_fpregset, x86_64_store_fpregset },
  79   { 0, 0, -1, -1, NULL, NULL }
  80 };
  81
  82 struct linux_target_ops the_low_target = {
  83   -1,
  84   NULL,
  85   NULL,
  86   NULL,
  87 };