1 /* Native-dependent code for AMD64 BSD's.
3 Copyright (C) 2003-2018 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
= regcache
->arch ();
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);
61 if (regnum
== -1 || regnum
== AMD64_FSBASE_REGNUM
)
65 if (ptrace (PT_GETFSBASE
, pid
, (PTRACE_TYPE_ARG3
) &base
, 0) == -1)
66 perror_with_name (_("Couldn't get segment register fs_base"));
68 regcache_raw_supply (regcache
, AMD64_FSBASE_REGNUM
, &base
);
74 if (regnum
== -1 || regnum
== AMD64_GSBASE_REGNUM
)
78 if (ptrace (PT_GETGSBASE
, pid
, (PTRACE_TYPE_ARG3
) &base
, 0) == -1)
79 perror_with_name (_("Couldn't get segment register gs_base"));
81 regcache_raw_supply (regcache
, AMD64_GSBASE_REGNUM
, &base
);
87 if (regnum
== -1 || !amd64_native_gregset_supplies_p (gdbarch
, regnum
))
90 #ifdef PT_GETXSTATE_INFO
93 if (x86bsd_xsave_len
!= 0)
95 xstateregs
= alloca (x86bsd_xsave_len
);
96 if (ptrace (PT_GETXSTATE
, pid
, (PTRACE_TYPE_ARG3
) xstateregs
, 0)
98 perror_with_name (_("Couldn't get extended state status"));
100 amd64_supply_xsave (regcache
, -1, xstateregs
);
105 if (ptrace (PT_GETFPREGS
, pid
, (PTRACE_TYPE_ARG3
) &fpregs
, 0) == -1)
106 perror_with_name (_("Couldn't get floating point status"));
108 amd64_supply_fxsave (regcache
, -1, &fpregs
);
112 /* Store register REGNUM back into the inferior. If REGNUM is -1, do
113 this for all registers (including the floating-point registers). */
116 amd64bsd_store_inferior_registers (struct target_ops
*ops
,
117 struct regcache
*regcache
, int regnum
)
119 struct gdbarch
*gdbarch
= regcache
->arch ();
120 pid_t pid
= get_ptrace_pid (regcache_get_ptid (regcache
));
122 if (regnum
== -1 || amd64_native_gregset_supplies_p (gdbarch
, regnum
))
126 if (ptrace (PT_GETREGS
, pid
, (PTRACE_TYPE_ARG3
) ®s
, 0) == -1)
127 perror_with_name (_("Couldn't get registers"));
129 amd64_collect_native_gregset (regcache
, ®s
, regnum
);
131 if (ptrace (PT_SETREGS
, pid
, (PTRACE_TYPE_ARG3
) ®s
, 0) == -1)
132 perror_with_name (_("Couldn't write registers"));
139 if (regnum
== -1 || regnum
== AMD64_FSBASE_REGNUM
)
143 regcache_raw_collect (regcache
, AMD64_FSBASE_REGNUM
, &base
);
145 if (ptrace (PT_SETFSBASE
, pid
, (PTRACE_TYPE_ARG3
) &base
, 0) == -1)
146 perror_with_name (_("Couldn't write segment register fs_base"));
152 if (regnum
== -1 || regnum
== AMD64_GSBASE_REGNUM
)
156 regcache_raw_collect (regcache
, AMD64_GSBASE_REGNUM
, &base
);
158 if (ptrace (PT_SETGSBASE
, pid
, (PTRACE_TYPE_ARG3
) &base
, 0) == -1)
159 perror_with_name (_("Couldn't write segment register gs_base"));
165 if (regnum
== -1 || !amd64_native_gregset_supplies_p (gdbarch
, regnum
))
168 #ifdef PT_GETXSTATE_INFO
171 if (x86bsd_xsave_len
!= 0)
173 xstateregs
= alloca (x86bsd_xsave_len
);
174 if (ptrace (PT_GETXSTATE
, pid
, (PTRACE_TYPE_ARG3
) xstateregs
, 0)
176 perror_with_name (_("Couldn't get extended state status"));
178 amd64_collect_xsave (regcache
, regnum
, xstateregs
, 0);
180 if (ptrace (PT_SETXSTATE
, pid
, (PTRACE_TYPE_ARG3
) xstateregs
,
181 x86bsd_xsave_len
) == -1)
182 perror_with_name (_("Couldn't write extended state status"));
187 if (ptrace (PT_GETFPREGS
, pid
, (PTRACE_TYPE_ARG3
) &fpregs
, 0) == -1)
188 perror_with_name (_("Couldn't get floating point status"));
190 amd64_collect_fxsave (regcache
, regnum
, &fpregs
);
192 if (ptrace (PT_SETFPREGS
, pid
, (PTRACE_TYPE_ARG3
) &fpregs
, 0) == -1)
193 perror_with_name (_("Couldn't write floating point status"));
197 /* Create a prototype *BSD/amd64 target. The client can override it
198 with local methods. */
201 amd64bsd_target (void)
203 struct target_ops
*t
;
205 t
= x86bsd_target ();
206 t
->to_fetch_registers
= amd64bsd_fetch_inferior_registers
;
207 t
->to_store_registers
= amd64bsd_store_inferior_registers
;