1/* Native-dependent code for AMD64 BSD's. 2 3 Copyright (C) 2003, 2004, 2007 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 3 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, see <http://www.gnu.org/licenses/>. */ 19 20#include "defs.h" 21#include "inferior.h" 22#include "regcache.h" 23#include "target.h" 24 25/* We include <signal.h> to make sure `struct fxsave64' is defined on 26 NetBSD, since NetBSD's <machine/reg.h> needs it. */ 27#include "gdb_assert.h" 28#include <signal.h> 29#include <sys/types.h> 30#include <sys/ptrace.h> 31#include <machine/reg.h> 32 33#include "amd64-tdep.h" 34#include "amd64-nat.h" 35#include "inf-ptrace.h" 36 37 38/* Fetch register REGNUM from the inferior. If REGNUM is -1, do this 39 for all registers (including the floating-point registers). */ 40 41static void 42amd64bsd_fetch_inferior_registers (struct regcache *regcache, 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_TYPE_ARG3) ®s, 0) == -1) 50 perror_with_name (_("Couldn't get registers")); 51 52 amd64_supply_native_gregset (regcache, ®s, -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_TYPE_ARG3) &fpregs, 0) == -1) 63 perror_with_name (_("Couldn't get floating point status")); 64 65 amd64_supply_fxsave (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 72static void 73amd64bsd_store_inferior_registers (struct regcache *regcache, 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_TYPE_ARG3) ®s, 0) == -1) 81 perror_with_name (_("Couldn't get registers")); 82 83 amd64_collect_native_gregset (regcache, ®s, regnum); 84 85 if (ptrace (PT_SETREGS, PIDGET (inferior_ptid), 86 (PTRACE_TYPE_ARG3) ®s, 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_TYPE_ARG3) &fpregs, 0) == -1) 99 perror_with_name (_("Couldn't get floating point status")); 100 101 amd64_collect_fxsave (regcache, regnum, &fpregs); 102 103 if (ptrace (PT_SETFPREGS, PIDGET (inferior_ptid), 104 (PTRACE_TYPE_ARG3) &fpregs, 0) == -1) 105 perror_with_name (_("Couldn't write floating point status")); 106 } 107} 108 109/* Create a prototype *BSD/amd64 target. The client can override it 110 with local methods. */ 111 112struct target_ops * 113amd64bsd_target (void) 114{ 115 struct target_ops *t; 116 117 t = inf_ptrace_target (); 118 t->to_fetch_registers = amd64bsd_fetch_inferior_registers; 119 t->to_store_registers = amd64bsd_store_inferior_registers; 120 return t; 121} 122