1 /* Native-dependent code for FreeBSD/mips.
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/>. */
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 struct mips_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 mips_fbsd_nat_target the_mips_fbsd_nat_target;
42 /* Determine if PT_GETREGS fetches REGNUM. */
45 getregs_supplies (struct gdbarch *gdbarch, int regnum)
47 return (regnum >= MIPS_ZERO_REGNUM
48 && regnum <= mips_regnum (gdbarch)->pc);
51 /* Determine if PT_GETFPREGS fetches REGNUM. */
54 getfpregs_supplies (struct gdbarch *gdbarch, int regnum)
56 return (regnum >= mips_regnum (gdbarch)->fp0
57 && regnum <= mips_regnum (gdbarch)->fp_implementation_revision);
60 /* Fetch register REGNUM from the inferior. If REGNUM is -1, do this
64 mips_fbsd_nat_target::fetch_registers (struct regcache *regcache, int regnum)
66 pid_t pid = get_ptrace_pid (regcache->ptid ());
68 struct gdbarch *gdbarch = regcache->arch ();
69 if (regnum == -1 || getregs_supplies (gdbarch, regnum))
73 if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
74 perror_with_name (_("Couldn't get registers"));
76 mips_fbsd_supply_gregs (regcache, regnum, ®s, sizeof (register_t));
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 mips_fbsd_supply_fpregs (regcache, regnum, &fpregs,
87 sizeof (f_register_t));
91 /* Store register REGNUM back into the inferior. If REGNUM is -1, do
92 this for all registers. */
95 mips_fbsd_nat_target::store_registers (struct regcache *regcache, int regnum)
97 pid_t pid = get_ptrace_pid (regcache->ptid ());
99 struct gdbarch *gdbarch = regcache->arch ();
100 if (regnum == -1 || getregs_supplies (gdbarch, regnum))
104 if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
105 perror_with_name (_("Couldn't get registers"));
107 mips_fbsd_collect_gregs (regcache, regnum, (char *) ®s,
108 sizeof (register_t));
110 if (ptrace (PT_SETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
111 perror_with_name (_("Couldn't write registers"));
114 if (regnum == -1 || getfpregs_supplies (gdbarch, regnum))
118 if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
119 perror_with_name (_("Couldn't get floating point status"));
121 mips_fbsd_collect_fpregs (regcache, regnum, (char *) &fpregs,
122 sizeof (f_register_t));
124 if (ptrace (PT_SETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
125 perror_with_name (_("Couldn't write floating point status"));
130 _initialize_mips_fbsd_nat (void)
132 add_inf_child_target (&the_mips_fbsd_nat_target);