| /* Native-dependent code for FreeBSD/mips. |
| |
| Copyright (C) 2017-2021 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); |
| } |