1 /* Native-dependent code for AMD64 BSD's.
3 Copyright (C) 2003-2017 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. */
28 #include <sys/types.h>
29 #include <sys/ptrace.h>
30 #include <machine/reg.h>
32 #include "amd64-tdep.h"
33 #include "amd64-nat.h"
34 #include "x86-bsd-nat.h"
35 #include "inf-ptrace.h"
38 /* Fetch register REGNUM from the inferior. If REGNUM is -1, do this
39 for all registers (including the floating-point registers). */
42 amd64bsd_fetch_inferior_registers (struct target_ops
*ops
,
43 struct regcache
*regcache
, int regnum
)
45 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
46 pid_t pid
= get_ptrace_pid (regcache_get_ptid (regcache
));
48 if (regnum
== -1 || amd64_native_gregset_supplies_p (gdbarch
, regnum
))
52 if (ptrace (PT_GETREGS
, pid
, (PTRACE_TYPE_ARG3
) ®s
, 0) == -1)
53 perror_with_name (_("Couldn't get registers"));
55 amd64_supply_native_gregset (regcache
, ®s
, -1);
60 if (regnum
== -1 || !amd64_native_gregset_supplies_p (gdbarch
, regnum
))
63 #ifdef PT_GETXSTATE_INFO
66 if (x86bsd_xsave_len
!= 0)
68 xstateregs
= alloca (x86bsd_xsave_len
);
69 if (ptrace (PT_GETXSTATE
, pid
, (PTRACE_TYPE_ARG3
) xstateregs
, 0)
71 perror_with_name (_("Couldn't get extended state status"));
73 amd64_supply_xsave (regcache
, -1, xstateregs
);
78 if (ptrace (PT_GETFPREGS
, pid
, (PTRACE_TYPE_ARG3
) &fpregs
, 0) == -1)
79 perror_with_name (_("Couldn't get floating point status"));
81 amd64_supply_fxsave (regcache
, -1, &fpregs
);
85 /* Store register REGNUM back into the inferior. If REGNUM is -1, do
86 this for all registers (including the floating-point registers). */
89 amd64bsd_store_inferior_registers (struct target_ops
*ops
,
90 struct regcache
*regcache
, int regnum
)
92 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
93 pid_t pid
= get_ptrace_pid (regcache_get_ptid (regcache
));
95 if (regnum
== -1 || amd64_native_gregset_supplies_p (gdbarch
, regnum
))
99 if (ptrace (PT_GETREGS
, pid
, (PTRACE_TYPE_ARG3
) ®s
, 0) == -1)
100 perror_with_name (_("Couldn't get registers"));
102 amd64_collect_native_gregset (regcache
, ®s
, regnum
);
104 if (ptrace (PT_SETREGS
, pid
, (PTRACE_TYPE_ARG3
) ®s
, 0) == -1)
105 perror_with_name (_("Couldn't write registers"));
111 if (regnum
== -1 || !amd64_native_gregset_supplies_p (gdbarch
, regnum
))
114 #ifdef PT_GETXSTATE_INFO
117 if (x86bsd_xsave_len
!= 0)
119 xstateregs
= alloca (x86bsd_xsave_len
);
120 if (ptrace (PT_GETXSTATE
, pid
, (PTRACE_TYPE_ARG3
) xstateregs
, 0)
122 perror_with_name (_("Couldn't get extended state status"));
124 amd64_collect_xsave (regcache
, regnum
, xstateregs
, 0);
126 if (ptrace (PT_SETXSTATE
, pid
, (PTRACE_TYPE_ARG3
) xstateregs
,
127 x86bsd_xsave_len
) == -1)
128 perror_with_name (_("Couldn't write extended state status"));
133 if (ptrace (PT_GETFPREGS
, pid
, (PTRACE_TYPE_ARG3
) &fpregs
, 0) == -1)
134 perror_with_name (_("Couldn't get floating point status"));
136 amd64_collect_fxsave (regcache
, regnum
, &fpregs
);
138 if (ptrace (PT_SETFPREGS
, pid
, (PTRACE_TYPE_ARG3
) &fpregs
, 0) == -1)
139 perror_with_name (_("Couldn't write floating point status"));
143 /* Create a prototype *BSD/amd64 target. The client can override it
144 with local methods. */
147 amd64bsd_target (void)
149 struct target_ops
*t
;
151 t
= x86bsd_target ();
152 t
->to_fetch_registers
= amd64bsd_fetch_inferior_registers
;
153 t
->to_store_registers
= amd64bsd_store_inferior_registers
;