1 /* Native-dependent code for AMD64 BSD's.
3 Copyright (C) 2003-2014 Free Software Foundation, Inc.
5 This file is part of GDB.
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.
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.
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/>. */
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"
29 #include <sys/types.h>
30 #include <sys/ptrace.h>
31 #include <machine/reg.h>
33 #include "amd64-tdep.h"
34 #include "amd64-nat.h"
35 #include "amd64bsd-nat.h"
36 #include "inf-ptrace.h"
39 /* Fetch register REGNUM from the inferior. If REGNUM is -1, do this
40 for all registers (including the floating-point registers). */
43 amd64bsd_fetch_inferior_registers (struct target_ops *ops,
44 struct regcache *regcache, int regnum)
46 struct gdbarch *gdbarch = get_regcache_arch (regcache);
48 if (regnum == -1 || amd64_native_gregset_supplies_p (gdbarch, regnum))
52 if (ptrace (PT_GETREGS, ptid_get_pid (inferior_ptid),
53 (PTRACE_TYPE_ARG3) ®s, 0) == -1)
54 perror_with_name (_("Couldn't get registers"));
56 amd64_supply_native_gregset (regcache, ®s, -1);
61 if (regnum == -1 || !amd64_native_gregset_supplies_p (gdbarch, regnum))
65 if (ptrace (PT_GETFPREGS, ptid_get_pid (inferior_ptid),
66 (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
67 perror_with_name (_("Couldn't get floating point status"));
69 amd64_supply_fxsave (regcache, -1, &fpregs);
73 /* Store register REGNUM back into the inferior. If REGNUM is -1, do
74 this for all registers (including the floating-point registers). */
77 amd64bsd_store_inferior_registers (struct target_ops *ops,
78 struct regcache *regcache, int regnum)
80 struct gdbarch *gdbarch = get_regcache_arch (regcache);
82 if (regnum == -1 || amd64_native_gregset_supplies_p (gdbarch, regnum))
86 if (ptrace (PT_GETREGS, ptid_get_pid (inferior_ptid),
87 (PTRACE_TYPE_ARG3) ®s, 0) == -1)
88 perror_with_name (_("Couldn't get registers"));
90 amd64_collect_native_gregset (regcache, ®s, regnum);
92 if (ptrace (PT_SETREGS, ptid_get_pid (inferior_ptid),
93 (PTRACE_TYPE_ARG3) ®s, 0) == -1)
94 perror_with_name (_("Couldn't write registers"));
100 if (regnum == -1 || !amd64_native_gregset_supplies_p (gdbarch, regnum))
104 if (ptrace (PT_GETFPREGS, ptid_get_pid (inferior_ptid),
105 (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
106 perror_with_name (_("Couldn't get floating point status"));
108 amd64_collect_fxsave (regcache, regnum, &fpregs);
110 if (ptrace (PT_SETFPREGS, ptid_get_pid (inferior_ptid),
111 (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
112 perror_with_name (_("Couldn't write floating point status"));
116 /* Create a prototype *BSD/amd64 target. The client can override it
117 with local methods. */
120 amd64bsd_target (void)
122 struct target_ops *t;
124 t = inf_ptrace_target ();
125 t->to_fetch_registers = amd64bsd_fetch_inferior_registers;
126 t->to_store_registers = amd64bsd_store_inferior_registers;
131 /* Support for debug registers. */
133 #ifdef HAVE_PT_GETDBREGS
136 amd64bsd_dr_get (ptid_t ptid, int regnum)
140 if (ptrace (PT_GETDBREGS, ptid_get_pid (inferior_ptid),
141 (PTRACE_TYPE_ARG3) &dbregs, 0) == -1)
142 perror_with_name (_("Couldn't read debug registers"));
144 return DBREG_DRX ((&dbregs), regnum);
148 amd64bsd_dr_set (int regnum, unsigned long value)
152 if (ptrace (PT_GETDBREGS, ptid_get_pid (inferior_ptid),
153 (PTRACE_TYPE_ARG3) &dbregs, 0) == -1)
154 perror_with_name (_("Couldn't get debug registers"));
156 /* For some mysterious reason, some of the reserved bits in the
157 debug control register get set. Mask these off, otherwise the
158 ptrace call below will fail. */
159 DBREG_DRX ((&dbregs), 7) &= ~(0xffffffff0000fc00);
161 DBREG_DRX ((&dbregs), regnum) = value;
163 if (ptrace (PT_SETDBREGS, ptid_get_pid (inferior_ptid),
164 (PTRACE_TYPE_ARG3) &dbregs, 0) == -1)
165 perror_with_name (_("Couldn't write debug registers"));
169 amd64bsd_dr_set_control (unsigned long control)
171 amd64bsd_dr_set (7, control);
175 amd64bsd_dr_set_addr (int regnum, CORE_ADDR addr)
177 gdb_assert (regnum >= 0 && regnum <= 4);
179 amd64bsd_dr_set (regnum, addr);
183 amd64bsd_dr_get_addr (int regnum)
185 return amd64bsd_dr_get (inferior_ptid, regnum);
189 amd64bsd_dr_get_status (void)
191 return amd64bsd_dr_get (inferior_ptid, 6);
195 amd64bsd_dr_get_control (void)
197 return amd64bsd_dr_get (inferior_ptid, 7);
200 #endif /* PT_GETDBREGS */