1 /* Native-dependent code for AMD64 BSD's. 2 3 Copyright (C) 2003-2004, 2007-2012 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 41 static void 42 amd64bsd_fetch_inferior_registers (struct target_ops *ops, 43 struct regcache *regcache, int regnum) 44 { 45 struct gdbarch *gdbarch = get_regcache_arch (regcache); 46 47 if (regnum == -1 || amd64_native_gregset_supplies_p (gdbarch, regnum)) 48 { 49 struct reg regs; 50 51 if (ptrace (PT_GETREGS, PIDGET (inferior_ptid), 52 (PTRACE_TYPE_ARG3) ®s, 0) == -1) 53 perror_with_name (_("Couldn't get registers")); 54 55 amd64_supply_native_gregset (regcache, ®s, -1); 56 if (regnum != -1) 57 return; 58 } 59 60 if (regnum == -1 || !amd64_native_gregset_supplies_p (gdbarch, regnum)) 61 { 62 struct fpreg fpregs; 63 64 if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid), 65 (PTRACE_TYPE_ARG3) &fpregs, 0) == -1) 66 perror_with_name (_("Couldn't get floating point status")); 67 68 amd64_supply_fxsave (regcache, -1, &fpregs); 69 } 70 } 71 72 /* Store register REGNUM back into the inferior. If REGNUM is -1, do 73 this for all registers (including the floating-point registers). */ 74 75 static void 76 amd64bsd_store_inferior_registers (struct target_ops *ops, 77 struct regcache *regcache, int regnum) 78 { 79 struct gdbarch *gdbarch = get_regcache_arch (regcache); 80 81 if (regnum == -1 || amd64_native_gregset_supplies_p (gdbarch, regnum)) 82 { 83 struct reg regs; 84 85 if (ptrace (PT_GETREGS, PIDGET (inferior_ptid), 86 (PTRACE_TYPE_ARG3) ®s, 0) == -1) 87 perror_with_name (_("Couldn't get registers")); 88 89 amd64_collect_native_gregset (regcache, ®s, regnum); 90 91 if (ptrace (PT_SETREGS, PIDGET (inferior_ptid), 92 (PTRACE_TYPE_ARG3) ®s, 0) == -1) 93 perror_with_name (_("Couldn't write registers")); 94 95 if (regnum != -1) 96 return; 97 } 98 99 if (regnum == -1 || !amd64_native_gregset_supplies_p (gdbarch, regnum)) 100 { 101 struct fpreg fpregs; 102 103 if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid), 104 (PTRACE_TYPE_ARG3) &fpregs, 0) == -1) 105 perror_with_name (_("Couldn't get floating point status")); 106 107 amd64_collect_fxsave (regcache, regnum, &fpregs); 108 109 if (ptrace (PT_SETFPREGS, PIDGET (inferior_ptid), 110 (PTRACE_TYPE_ARG3) &fpregs, 0) == -1) 111 perror_with_name (_("Couldn't write floating point status")); 112 } 113 } 114 115 /* Create a prototype *BSD/amd64 target. The client can override it 116 with local methods. */ 117 118 struct target_ops * 119 amd64bsd_target (void) 120 { 121 struct target_ops *t; 122 123 t = inf_ptrace_target (); 124 t->to_fetch_registers = amd64bsd_fetch_inferior_registers; 125 t->to_store_registers = amd64bsd_store_inferior_registers; 126 return t; 127 } 128