| 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 | \f |
| 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 | } |