1 /* Native-dependent code for FreeBSD/mips.
3 Copyright (C) 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 #include <sys/types.h>
26 #include <sys/ptrace.h>
27 #include <machine/reg.h>
30 #include "mips-tdep.h"
31 #include "mips-fbsd-tdep.h"
32 #include "inf-ptrace.h"
34 /* Determine if PT_GETREGS fetches this register. */
37 getregs_supplies (struct gdbarch
*gdbarch
, int regnum
)
39 return (regnum
>= MIPS_ZERO_REGNUM
40 && regnum
<= gdbarch_pc_regnum (gdbarch
));
43 /* Fetch register REGNUM from the inferior. If REGNUM is -1, do this
47 mips_fbsd_fetch_inferior_registers (struct target_ops
*ops
,
48 struct regcache
*regcache
, int regnum
)
50 pid_t pid
= get_ptrace_pid (regcache_get_ptid (regcache
));
52 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
53 if (regnum
== -1 || getregs_supplies (gdbarch
, regnum
))
57 if (ptrace (PT_GETREGS
, pid
, (PTRACE_TYPE_ARG3
) ®s
, 0) == -1)
58 perror_with_name (_("Couldn't get registers"));
60 mips_fbsd_supply_gregs (regcache
, regnum
, ®s
, sizeof (register_t
));
66 || regnum
>= gdbarch_fp0_regnum (get_regcache_arch (regcache
)))
70 if (ptrace (PT_GETFPREGS
, pid
, (PTRACE_TYPE_ARG3
) &fpregs
, 0) == -1)
71 perror_with_name (_("Couldn't get floating point status"));
73 mips_fbsd_supply_fpregs (regcache
, regnum
, &fpregs
,
74 sizeof (f_register_t
));
78 /* Store register REGNUM back into the inferior. If REGNUM is -1, do
79 this for all registers. */
82 mips_fbsd_store_inferior_registers (struct target_ops
*ops
,
83 struct regcache
*regcache
, int regnum
)
85 pid_t pid
= get_ptrace_pid (regcache_get_ptid (regcache
));
87 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
88 if (regnum
== -1 || getregs_supplies (gdbarch
, regnum
))
92 if (ptrace (PT_GETREGS
, pid
, (PTRACE_TYPE_ARG3
) ®s
, 0) == -1)
93 perror_with_name (_("Couldn't get registers"));
95 mips_fbsd_collect_gregs (regcache
, regnum
, (char *) ®s
,
98 if (ptrace (PT_SETREGS
, pid
, (PTRACE_TYPE_ARG3
) ®s
, 0) == -1)
99 perror_with_name (_("Couldn't write registers"));
106 || regnum
>= gdbarch_fp0_regnum (get_regcache_arch (regcache
)))
110 if (ptrace (PT_GETFPREGS
, pid
, (PTRACE_TYPE_ARG3
) &fpregs
, 0) == -1)
111 perror_with_name (_("Couldn't get floating point status"));
113 mips_fbsd_collect_fpregs (regcache
, regnum
, (char *) &fpregs
,
114 sizeof (f_register_t
));
116 if (ptrace (PT_SETFPREGS
, pid
, (PTRACE_TYPE_ARG3
) &fpregs
, 0) == -1)
117 perror_with_name (_("Couldn't write floating point status"));
122 /* Provide a prototype to silence -Wmissing-prototypes. */
123 void _initialize_mips_fbsd_nat (void);
126 _initialize_mips_fbsd_nat (void)
128 struct target_ops
*t
;
130 t
= inf_ptrace_target ();
131 t
->to_fetch_registers
= mips_fbsd_fetch_inferior_registers
;
132 t
->to_store_registers
= mips_fbsd_store_inferior_registers
;
133 fbsd_nat_add_target (t
);