1 /* Native-dependent code for FreeBSD/aarch64.
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/>. */
23 #include <sys/types.h>
24 #include <sys/ptrace.h>
25 #include <machine/reg.h>
28 #include "aarch64-tdep.h"
29 #include "aarch64-fbsd-tdep.h"
30 #include "inf-ptrace.h"
32 /* Determine if PT_GETREGS fetches REGNUM. */
35 getregs_supplies (struct gdbarch *gdbarch, int regnum)
37 return (regnum >= AARCH64_X0_REGNUM && regnum <= AARCH64_CPSR_REGNUM);
40 /* Determine if PT_GETFPREGS fetches REGNUM. */
43 getfpregs_supplies (struct gdbarch *gdbarch, int regnum)
45 return (regnum >= AARCH64_V0_REGNUM && regnum <= AARCH64_FPCR_REGNUM);
48 /* Fetch register REGNUM from the inferior. If REGNUM is -1, do this
52 aarch64_fbsd_fetch_inferior_registers (struct target_ops *ops,
53 struct regcache *regcache, int regnum)
55 pid_t pid = get_ptrace_pid (regcache_get_ptid (regcache));
57 struct gdbarch *gdbarch = regcache->arch ();
58 if (regnum == -1 || getregs_supplies (gdbarch, regnum))
62 if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
63 perror_with_name (_("Couldn't get registers"));
65 regcache->supply_regset (&aarch64_fbsd_gregset, regnum, ®s,
69 if (regnum == -1 || getfpregs_supplies (gdbarch, regnum))
73 if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
74 perror_with_name (_("Couldn't get floating point status"));
76 regcache->supply_regset (&aarch64_fbsd_fpregset, regnum, &fpregs,
81 /* Store register REGNUM back into the inferior. If REGNUM is -1, do
82 this for all registers. */
85 aarch64_fbsd_store_inferior_registers (struct target_ops *ops,
86 struct regcache *regcache, int regnum)
88 pid_t pid = get_ptrace_pid (regcache_get_ptid (regcache));
90 struct gdbarch *gdbarch = regcache->arch ();
91 if (regnum == -1 || getregs_supplies (gdbarch, regnum))
95 if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
96 perror_with_name (_("Couldn't get registers"));
98 regcache->collect_regset (&aarch64_fbsd_gregset, regnum, ®s,
101 if (ptrace (PT_SETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
102 perror_with_name (_("Couldn't write registers"));
105 if (regnum == -1 || getfpregs_supplies (gdbarch, regnum))
109 if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
110 perror_with_name (_("Couldn't get floating point status"));
112 regcache->collect_regset (&aarch64_fbsd_fpregset, regnum, &fpregs,
115 if (ptrace (PT_SETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
116 perror_with_name (_("Couldn't write floating point status"));
121 _initialize_aarch64_fbsd_nat (void)
123 struct target_ops *t;
125 t = inf_ptrace_target ();
126 t->to_fetch_registers = aarch64_fbsd_fetch_inferior_registers;
127 t->to_store_registers = aarch64_fbsd_store_inferior_registers;
128 fbsd_nat_add_target (t);