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- /* Native-dependent code for FreeBSD/mips.
- Copyright (C) 2017-2022 Free Software Foundation, Inc.
- This file is part of GDB.
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>. */
- #include "defs.h"
- #include "inferior.h"
- #include "regcache.h"
- #include "target.h"
- #include <sys/types.h>
- #include <sys/ptrace.h>
- #include <machine/reg.h>
- #include "fbsd-nat.h"
- #include "mips-tdep.h"
- #include "mips-fbsd-tdep.h"
- #include "inf-ptrace.h"
- struct mips_fbsd_nat_target final : public fbsd_nat_target
- {
- void fetch_registers (struct regcache *, int) override;
- void store_registers (struct regcache *, int) override;
- };
- static mips_fbsd_nat_target the_mips_fbsd_nat_target;
- /* Determine if PT_GETREGS fetches REGNUM. */
- static bool
- getregs_supplies (struct gdbarch *gdbarch, int regnum)
- {
- return (regnum >= MIPS_ZERO_REGNUM
- && regnum <= mips_regnum (gdbarch)->pc);
- }
- /* Determine if PT_GETFPREGS fetches REGNUM. */
- static bool
- getfpregs_supplies (struct gdbarch *gdbarch, int regnum)
- {
- return (regnum >= mips_regnum (gdbarch)->fp0
- && regnum <= mips_regnum (gdbarch)->fp_implementation_revision);
- }
- /* Fetch register REGNUM from the inferior. If REGNUM is -1, do this
- for all registers. */
- void
- mips_fbsd_nat_target::fetch_registers (struct regcache *regcache, int regnum)
- {
- pid_t pid = get_ptrace_pid (regcache->ptid ());
- struct gdbarch *gdbarch = regcache->arch ();
- if (regnum == -1 || getregs_supplies (gdbarch, regnum))
- {
- struct reg regs;
- if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
- perror_with_name (_("Couldn't get registers"));
- mips_fbsd_supply_gregs (regcache, regnum, ®s, sizeof (register_t));
- }
- if (regnum == -1 || getfpregs_supplies (gdbarch, regnum))
- {
- struct fpreg fpregs;
- if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
- perror_with_name (_("Couldn't get floating point status"));
- mips_fbsd_supply_fpregs (regcache, regnum, &fpregs,
- sizeof (f_register_t));
- }
- }
- /* Store register REGNUM back into the inferior. If REGNUM is -1, do
- this for all registers. */
- void
- mips_fbsd_nat_target::store_registers (struct regcache *regcache, int regnum)
- {
- pid_t pid = get_ptrace_pid (regcache->ptid ());
- struct gdbarch *gdbarch = regcache->arch ();
- if (regnum == -1 || getregs_supplies (gdbarch, regnum))
- {
- struct reg regs;
- if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
- perror_with_name (_("Couldn't get registers"));
- mips_fbsd_collect_gregs (regcache, regnum, (char *) ®s,
- sizeof (register_t));
- if (ptrace (PT_SETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
- perror_with_name (_("Couldn't write registers"));
- }
- if (regnum == -1 || getfpregs_supplies (gdbarch, regnum))
- {
- struct fpreg fpregs;
- if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
- perror_with_name (_("Couldn't get floating point status"));
- mips_fbsd_collect_fpregs (regcache, regnum, (char *) &fpregs,
- sizeof (f_register_t));
- if (ptrace (PT_SETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
- perror_with_name (_("Couldn't write floating point status"));
- }
- }
- void _initialize_mips_fbsd_nat ();
- void
- _initialize_mips_fbsd_nat ()
- {
- add_inf_child_target (&the_mips_fbsd_nat_target);
- }
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