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 #include "target.h" 26 27 /* We include <signal.h> to make sure `struct fxsave64' is defined on 28 NetBSD, since NetBSD's <machine/reg.h> needs it. */ 29 #include "gdb_assert.h" 30 #include <signal.h> 31 #include <sys/types.h> 32 #include <sys/ptrace.h> 33 #include <machine/reg.h> 34 35 #include "amd64-tdep.h" 36 #include "amd64-nat.h" 37 #include "inf-ptrace.h" 38 39 40 /* Fetch register REGNUM from the inferior. If REGNUM is -1, do this 41 for all registers (including the floating-point registers). */ 42 43 static void 44 amd64bsd_fetch_inferior_registers (int regnum) 45 { 46 if (regnum == -1 || amd64_native_gregset_supplies_p (regnum)) 47 { 48 struct reg regs; 49 50 if (ptrace (PT_GETREGS, PIDGET (inferior_ptid), 51 (PTRACE_TYPE_ARG3) ®s, 0) == -1) 52 perror_with_name ("Couldn't get registers"); 53 54 amd64_supply_native_gregset (current_regcache, ®s, -1); 55 if (regnum != -1) 56 return; 57 } 58 59 if (regnum == -1 || !amd64_native_gregset_supplies_p (regnum)) 60 { 61 struct fpreg fpregs; 62 63 if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid), 64 (PTRACE_TYPE_ARG3) &fpregs, 0) == -1) 65 perror_with_name ("Couldn't get floating point status"); 66 67 amd64_supply_fxsave (current_regcache, -1, &fpregs); 68 } 69 } 70 71 /* Store register REGNUM back into the inferior. If REGNUM is -1, do 72 this for all registers (including the floating-point registers). */ 73 74 static void 75 amd64bsd_store_inferior_registers (int regnum) 76 { 77 if (regnum == -1 || amd64_native_gregset_supplies_p (regnum)) 78 { 79 struct reg regs; 80 81 if (ptrace (PT_GETREGS, PIDGET (inferior_ptid), 82 (PTRACE_TYPE_ARG3) ®s, 0) == -1) 83 perror_with_name ("Couldn't get registers"); 84 85 amd64_collect_native_gregset (current_regcache, ®s, regnum); 86 87 if (ptrace (PT_SETREGS, PIDGET (inferior_ptid), 88 (PTRACE_TYPE_ARG3) ®s, 0) == -1) 89 perror_with_name ("Couldn't write registers"); 90 91 if (regnum != -1) 92 return; 93 } 94 95 if (regnum == -1 || !amd64_native_gregset_supplies_p (regnum)) 96 { 97 struct fpreg fpregs; 98 99 if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid), 100 (PTRACE_TYPE_ARG3) &fpregs, 0) == -1) 101 perror_with_name ("Couldn't get floating point status"); 102 103 amd64_collect_fxsave (current_regcache, regnum, &fpregs); 104 105 if (ptrace (PT_SETFPREGS, PIDGET (inferior_ptid), 106 (PTRACE_TYPE_ARG3) &fpregs, 0) == -1) 107 perror_with_name ("Couldn't write floating point status"); 108 } 109 } 110 111 /* Create a prototype *BSD/amd64 target. The client can override it 112 with local methods. */ 113 114 struct target_ops * 115 amd64bsd_target (void) 116 { 117 struct target_ops *t; 118 119 t = inf_ptrace_target (); 120 t->to_fetch_registers = amd64bsd_fetch_inferior_registers; 121 t->to_store_registers = amd64bsd_store_inferior_registers; 122 return t; 123 } 124