contrib/gdb-6.2.1/gdb/amd64bsd-nat.c

   1 /* Native-dependent code for AMD64 BSD's.
   2
   3    Copyright 2003, 2004 Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   6
   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 2 of the License, or
  10    (at your option) any later version.
  11
  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.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 59 Temple Place - Suite 330,
  20    Boston, MA 02111-1307, USA.  */
  21
  22 #include "defs.h"
  23 #include "inferior.h"
  24 #include "regcache.h"
  25
  26 /* We include <signal.h> to make sure `struct fxsave64' is defined on
  27    NetBSD, since NetBSD's <machine/reg.h> needs it.  */
  28 #include "gdb_assert.h"
  29 #include <signal.h>
  30 #include <sys/types.h>
  31 #include <sys/ptrace.h>
  32 #include <machine/reg.h>
  33
  34 #include "amd64-tdep.h"
  35 #include "amd64-nat.h"
  36 \f
  37
  38 /* Fetch register REGNUM from the inferior.  If REGNUM is -1, do this
  39    for all registers (including the floating-point registers).  */
  40
  41 void
  42 fetch_inferior_registers (int regnum)
  43 {
  44   if (regnum == -1 || amd64_native_gregset_supplies_p (regnum))
  45     {
  46       struct reg regs;
  47
  48       if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
  49                   (PTRACE_ARG3_TYPE) &regs, 0) == -1)
  50         perror_with_name ("Couldn't get registers");
  51
  52       amd64_supply_native_gregset (current_regcache, &regs, -1);
  53       if (regnum != -1)
  54         return;
  55     }
  56
  57   if (regnum == -1 || !amd64_native_gregset_supplies_p (regnum))
  58     {
  59       struct fpreg fpregs;
  60
  61       if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),
  62                   (PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
  63         perror_with_name ("Couldn't get floating point status");
  64
  65       amd64_supply_fxsave (current_regcache, -1, &fpregs);
  66     }
  67 }
  68
  69 /* Store register REGNUM back into the inferior.  If REGNUM is -1, do
  70    this for all registers (including the floating-point registers).  */
  71
  72 void
  73 store_inferior_registers (int regnum)
  74 {
  75   if (regnum == -1 || amd64_native_gregset_supplies_p (regnum))
  76     {
  77       struct reg regs;
  78
  79       if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
  80                   (PTRACE_ARG3_TYPE) &regs, 0) == -1)
  81         perror_with_name ("Couldn't get registers");
  82
  83       amd64_collect_native_gregset (current_regcache, &regs, regnum);
  84
  85       if (ptrace (PT_SETREGS, PIDGET (inferior_ptid),
  86                   (PTRACE_ARG3_TYPE) &regs, 0) == -1)
  87         perror_with_name ("Couldn't write registers");
  88
  89       if (regnum != -1)
  90         return;
  91     }
  92
  93   if (regnum == -1 || !amd64_native_gregset_supplies_p (regnum))
  94     {
  95       struct fpreg fpregs;
  96
  97       if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),
  98                   (PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
  99         perror_with_name ("Couldn't get floating point status");
 100
 101       amd64_collect_fxsave (current_regcache, regnum, &fpregs);
 102
 103       if (ptrace (PT_SETFPREGS, PIDGET (inferior_ptid),
 104                   (PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
 105         perror_with_name ("Couldn't write floating point status");
 106     }
 107 }