1 /* Native-dependent code for AMD64 BSD's.
3 Copyright (C) 2003-2019 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 regcache
*regcache
, int regnum
)
44 struct gdbarch
*gdbarch
= regcache
->arch ();
45 pid_t pid
= get_ptrace_pid (regcache
->ptid ());
47 if (regnum
== -1 || amd64_native_gregset_supplies_p (gdbarch
, regnum
))
51 if (ptrace (PT_GETREGS
, pid
, (PTRACE_TYPE_ARG3
) ®s
, 0) == -1)
52 perror_with_name (_("Couldn't get registers"));
54 amd64_supply_native_gregset (regcache
, ®s
, -1);
60 if (regnum
== -1 || regnum
== AMD64_FSBASE_REGNUM
)
64 if (ptrace (PT_GETFSBASE
, pid
, (PTRACE_TYPE_ARG3
) &base
, 0) == -1)
65 perror_with_name (_("Couldn't get segment register fs_base"));
67 regcache
->raw_supply (AMD64_FSBASE_REGNUM
, &base
);
73 if (regnum
== -1 || regnum
== AMD64_GSBASE_REGNUM
)
77 if (ptrace (PT_GETGSBASE
, pid
, (PTRACE_TYPE_ARG3
) &base
, 0) == -1)
78 perror_with_name (_("Couldn't get segment register gs_base"));
80 regcache
->raw_supply (AMD64_GSBASE_REGNUM
, &base
);
86 if (regnum
== -1 || !amd64_native_gregset_supplies_p (gdbarch
, regnum
))
89 #ifdef PT_GETXSTATE_INFO
92 if (x86bsd_xsave_len
!= 0)
94 xstateregs
= alloca (x86bsd_xsave_len
);
95 if (ptrace (PT_GETXSTATE
, pid
, (PTRACE_TYPE_ARG3
) xstateregs
, 0)
97 perror_with_name (_("Couldn't get extended state status"));
99 amd64_supply_xsave (regcache
, -1, xstateregs
);
104 if (ptrace (PT_GETFPREGS
, pid
, (PTRACE_TYPE_ARG3
) &fpregs
, 0) == -1)
105 perror_with_name (_("Couldn't get floating point status"));
107 amd64_supply_fxsave (regcache
, -1, &fpregs
);
111 /* Store register REGNUM back into the inferior. If REGNUM is -1, do
112 this for all registers (including the floating-point registers). */
115 amd64bsd_store_inferior_registers (struct regcache
*regcache
, int regnum
)
117 struct gdbarch
*gdbarch
= regcache
->arch ();
118 pid_t pid
= get_ptrace_pid (regcache
->ptid ());
120 if (regnum
== -1 || amd64_native_gregset_supplies_p (gdbarch
, regnum
))
124 if (ptrace (PT_GETREGS
, pid
, (PTRACE_TYPE_ARG3
) ®s
, 0) == -1)
125 perror_with_name (_("Couldn't get registers"));
127 amd64_collect_native_gregset (regcache
, ®s
, regnum
);
129 if (ptrace (PT_SETREGS
, pid
, (PTRACE_TYPE_ARG3
) ®s
, 0) == -1)
130 perror_with_name (_("Couldn't write registers"));
137 if (regnum
== -1 || regnum
== AMD64_FSBASE_REGNUM
)
141 regcache
->raw_collect (AMD64_FSBASE_REGNUM
, &base
);
143 if (ptrace (PT_SETFSBASE
, pid
, (PTRACE_TYPE_ARG3
) &base
, 0) == -1)
144 perror_with_name (_("Couldn't write segment register fs_base"));
150 if (regnum
== -1 || regnum
== AMD64_GSBASE_REGNUM
)
154 regcache
->raw_collect (AMD64_GSBASE_REGNUM
, &base
);
156 if (ptrace (PT_SETGSBASE
, pid
, (PTRACE_TYPE_ARG3
) &base
, 0) == -1)
157 perror_with_name (_("Couldn't write segment register gs_base"));
163 if (regnum
== -1 || !amd64_native_gregset_supplies_p (gdbarch
, regnum
))
166 #ifdef PT_GETXSTATE_INFO
169 if (x86bsd_xsave_len
!= 0)
171 xstateregs
= alloca (x86bsd_xsave_len
);
172 if (ptrace (PT_GETXSTATE
, pid
, (PTRACE_TYPE_ARG3
) xstateregs
, 0)
174 perror_with_name (_("Couldn't get extended state status"));
176 amd64_collect_xsave (regcache
, regnum
, xstateregs
, 0);
178 if (ptrace (PT_SETXSTATE
, pid
, (PTRACE_TYPE_ARG3
) xstateregs
,
179 x86bsd_xsave_len
) == -1)
180 perror_with_name (_("Couldn't write extended state status"));
185 if (ptrace (PT_GETFPREGS
, pid
, (PTRACE_TYPE_ARG3
) &fpregs
, 0) == -1)
186 perror_with_name (_("Couldn't get floating point status"));
188 amd64_collect_fxsave (regcache
, regnum
, &fpregs
);
190 if (ptrace (PT_SETFPREGS
, pid
, (PTRACE_TYPE_ARG3
) &fpregs
, 0) == -1)
191 perror_with_name (_("Couldn't write floating point status"));
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