1 /* Native-dependent code for AMD64 BSD's. 2 3 Copyright (C) 2003, 2004, 2007, 2008, 2009, 2010, 2011 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 3 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, see <http://www.gnu.org/licenses/>. */ 20 21 #include "defs.h" 22 #include "inferior.h" 23 #include "regcache.h" 24 #include "target.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 #include "inf-ptrace.h" 37 38 39 /* Fetch register REGNUM from the inferior. If REGNUM is -1, do this 40 for all registers (including the floating-point registers). */ 41 42 static void 43 amd64bsd_fetch_inferior_registers (struct target_ops *ops, 44 struct regcache *regcache, int regnum) 45 { 46 struct gdbarch *gdbarch = get_regcache_arch (regcache); 47 48 if (regnum == -1 || amd64_native_gregset_supplies_p (gdbarch, regnum)) 49 { 50 struct reg regs; 51 52 if (ptrace (PT_GETREGS, PIDGET (inferior_ptid), 53 (PTRACE_TYPE_ARG3) ®s, 0) == -1) 54 perror_with_name (_("Couldn't get registers")); 55 56 amd64_supply_native_gregset (regcache, ®s, -1); 57 if (regnum != -1) 58 return; 59 } 60 61 if (regnum == -1 || !amd64_native_gregset_supplies_p (gdbarch, regnum)) 62 { 63 struct fpreg fpregs; 64 65 if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid), 66 (PTRACE_TYPE_ARG3) &fpregs, 0) == -1) 67 perror_with_name (_("Couldn't get floating point status")); 68 69 amd64_supply_fxsave (regcache, -1, &fpregs); 70 } 71 } 72 73 /* Store register REGNUM back into the inferior. If REGNUM is -1, do 74 this for all registers (including the floating-point registers). */ 75 76 static void 77 amd64bsd_store_inferior_registers (struct target_ops *ops, 78 struct regcache *regcache, int regnum) 79 { 80 struct gdbarch *gdbarch = get_regcache_arch (regcache); 81 82 if (regnum == -1 || amd64_native_gregset_supplies_p (gdbarch, regnum)) 83 { 84 struct reg regs; 85 86 if (ptrace (PT_GETREGS, PIDGET (inferior_ptid), 87 (PTRACE_TYPE_ARG3) ®s, 0) == -1) 88 perror_with_name (_("Couldn't get registers")); 89 90 amd64_collect_native_gregset (regcache, ®s, regnum); 91 92 if (ptrace (PT_SETREGS, PIDGET (inferior_ptid), 93 (PTRACE_TYPE_ARG3) ®s, 0) == -1) 94 perror_with_name (_("Couldn't write registers")); 95 96 if (regnum != -1) 97 return; 98 } 99 100 if (regnum == -1 || !amd64_native_gregset_supplies_p (gdbarch, regnum)) 101 { 102 struct fpreg fpregs; 103 104 if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid), 105 (PTRACE_TYPE_ARG3) &fpregs, 0) == -1) 106 perror_with_name (_("Couldn't get floating point status")); 107 108 amd64_collect_fxsave (regcache, regnum, &fpregs); 109 110 if (ptrace (PT_SETFPREGS, PIDGET (inferior_ptid), 111 (PTRACE_TYPE_ARG3) &fpregs, 0) == -1) 112 perror_with_name (_("Couldn't write floating point status")); 113 } 114 } 115 116 /* Create a prototype *BSD/amd64 target. The client can override it 117 with local methods. */ 118 119 struct target_ops * 120 amd64bsd_target (void) 121 { 122 struct target_ops *t; 123 124 t = inf_ptrace_target (); 125 t->to_fetch_registers = amd64bsd_fetch_inferior_registers; 126 t->to_store_registers = amd64bsd_store_inferior_registers; 127 return t; 128 } 129