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/>. */
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 struct aarch64_fbsd_nat_target final : public fbsd_nat_target
34 void fetch_registers (struct regcache *, int) override;
35 void store_registers (struct regcache *, int) override;
38 static aarch64_fbsd_nat_target the_aarch64_fbsd_nat_target;
40 /* Determine if PT_GETREGS fetches REGNUM. */
43 getregs_supplies (struct gdbarch *gdbarch, int regnum)
45 return (regnum >= AARCH64_X0_REGNUM && regnum <= AARCH64_CPSR_REGNUM);
48 /* Determine if PT_GETFPREGS fetches REGNUM. */
51 getfpregs_supplies (struct gdbarch *gdbarch, int regnum)
53 return (regnum >= AARCH64_V0_REGNUM && regnum <= AARCH64_FPCR_REGNUM);
56 /* Fetch register REGNUM from the inferior. If REGNUM is -1, do this
60 aarch64_fbsd_nat_target::fetch_registers (struct regcache *regcache,
63 pid_t pid = get_ptrace_pid (regcache->ptid ());
65 struct gdbarch *gdbarch = regcache->arch ();
66 if (regnum == -1 || getregs_supplies (gdbarch, regnum))
70 if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
71 perror_with_name (_("Couldn't get registers"));
73 regcache->supply_regset (&aarch64_fbsd_gregset, regnum, ®s,
77 if (regnum == -1 || getfpregs_supplies (gdbarch, regnum))
81 if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
82 perror_with_name (_("Couldn't get floating point status"));
84 regcache->supply_regset (&aarch64_fbsd_fpregset, regnum, &fpregs,
89 /* Store register REGNUM back into the inferior. If REGNUM is -1, do
90 this for all registers. */
93 aarch64_fbsd_nat_target::store_registers (struct regcache *regcache,
96 pid_t pid = get_ptrace_pid (regcache->ptid ());
98 struct gdbarch *gdbarch = regcache->arch ();
99 if (regnum == -1 || getregs_supplies (gdbarch, regnum))
103 if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
104 perror_with_name (_("Couldn't get registers"));
106 regcache->collect_regset (&aarch64_fbsd_gregset, regnum, ®s,
109 if (ptrace (PT_SETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
110 perror_with_name (_("Couldn't write registers"));
113 if (regnum == -1 || getfpregs_supplies (gdbarch, regnum))
117 if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
118 perror_with_name (_("Couldn't get floating point status"));
120 regcache->collect_regset (&aarch64_fbsd_fpregset, regnum, &fpregs,
123 if (ptrace (PT_SETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
124 perror_with_name (_("Couldn't write floating point status"));
129 _initialize_aarch64_fbsd_nat (void)
131 add_inf_child_target (&the_aarch64_fbsd_nat_target);