1 /* Native-dependent code for FreeBSD/aarch64.
3 Copyright (C) 2017-2019 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/>. */
22 /* Standard C includes. */
23 #include <machine/reg.h>
24 #include <sys/ptrace.h>
25 #include <sys/types.h>
27 /* Local non-gdb includes. */
28 #include "aarch64-fbsd-tdep.h"
29 #include "aarch64-tdep.h"
31 #include "inf-ptrace.h"
34 struct aarch64_fbsd_nat_target final
: public fbsd_nat_target
36 void fetch_registers (struct regcache
*, int) override
;
37 void store_registers (struct regcache
*, int) override
;
40 static aarch64_fbsd_nat_target the_aarch64_fbsd_nat_target
;
42 /* Determine if PT_GETREGS fetches REGNUM. */
45 getregs_supplies (struct gdbarch
*gdbarch
, int regnum
)
47 return (regnum
>= AARCH64_X0_REGNUM
&& regnum
<= AARCH64_CPSR_REGNUM
);
50 /* Determine if PT_GETFPREGS fetches REGNUM. */
53 getfpregs_supplies (struct gdbarch
*gdbarch
, int regnum
)
55 return (regnum
>= AARCH64_V0_REGNUM
&& regnum
<= AARCH64_FPCR_REGNUM
);
58 /* Fetch register REGNUM from the inferior. If REGNUM is -1, do this
62 aarch64_fbsd_nat_target::fetch_registers (struct regcache
*regcache
,
65 pid_t pid
= get_ptrace_pid (regcache
->ptid ());
67 struct gdbarch
*gdbarch
= regcache
->arch ();
68 if (regnum
== -1 || getregs_supplies (gdbarch
, regnum
))
72 if (ptrace (PT_GETREGS
, pid
, (PTRACE_TYPE_ARG3
) ®s
, 0) == -1)
73 perror_with_name (_("Couldn't get registers"));
75 regcache
->supply_regset (&aarch64_fbsd_gregset
, regnum
, ®s
,
79 if (regnum
== -1 || getfpregs_supplies (gdbarch
, regnum
))
83 if (ptrace (PT_GETFPREGS
, pid
, (PTRACE_TYPE_ARG3
) &fpregs
, 0) == -1)
84 perror_with_name (_("Couldn't get floating point status"));
86 regcache
->supply_regset (&aarch64_fbsd_fpregset
, regnum
, &fpregs
,
91 /* Store register REGNUM back into the inferior. If REGNUM is -1, do
92 this for all registers. */
95 aarch64_fbsd_nat_target::store_registers (struct regcache
*regcache
,
98 pid_t pid
= get_ptrace_pid (regcache
->ptid ());
100 struct gdbarch
*gdbarch
= regcache
->arch ();
101 if (regnum
== -1 || getregs_supplies (gdbarch
, regnum
))
105 if (ptrace (PT_GETREGS
, pid
, (PTRACE_TYPE_ARG3
) ®s
, 0) == -1)
106 perror_with_name (_("Couldn't get registers"));
108 regcache
->collect_regset (&aarch64_fbsd_gregset
, regnum
, ®s
,
111 if (ptrace (PT_SETREGS
, pid
, (PTRACE_TYPE_ARG3
) ®s
, 0) == -1)
112 perror_with_name (_("Couldn't write registers"));
115 if (regnum
== -1 || getfpregs_supplies (gdbarch
, regnum
))
119 if (ptrace (PT_GETFPREGS
, pid
, (PTRACE_TYPE_ARG3
) &fpregs
, 0) == -1)
120 perror_with_name (_("Couldn't get floating point status"));
122 regcache
->collect_regset (&aarch64_fbsd_fpregset
, regnum
, &fpregs
,
125 if (ptrace (PT_SETFPREGS
, pid
, (PTRACE_TYPE_ARG3
) &fpregs
, 0) == -1)
126 perror_with_name (_("Couldn't write floating point status"));
131 _initialize_aarch64_fbsd_nat (void)
133 add_inf_child_target (&the_aarch64_fbsd_nat_target
);