/* Native-dependent code for MIPS systems running NetBSD. Copyright (C) 2000-2019 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 "mips-tdep.h" #include "mips-nbsd-tdep.h" #include "inf-ptrace.h" class mips_nbsd_nat_target final : public inf_ptrace_target { void fetch_registers (struct regcache *, int) override; void store_registers (struct regcache *, int) override; }; static mips_nbsd_nat_target the_mips_nbsd_nat_target; /* Determine if PT_GETREGS fetches this register. */ static int getregs_supplies (struct gdbarch *gdbarch, int regno) { return ((regno) >= MIPS_ZERO_REGNUM && (regno) <= gdbarch_pc_regnum (gdbarch)); } void mips_nbsd_nat_target::fetch_registers (struct regcache *regcache, int regno) { pid_t pid = regcache->ptid ().pid (); struct gdbarch *gdbarch = regcache->arch (); if (regno == -1 || getregs_supplies (gdbarch, regno)) { struct reg regs; if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1) perror_with_name (_("Couldn't get registers")); mipsnbsd_supply_reg (regcache, (char *) ®s, regno); if (regno != -1) return; } if (regno == -1 || regno >= gdbarch_fp0_regnum (regcache->arch ())) { struct fpreg fpregs; if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1) perror_with_name (_("Couldn't get floating point status")); mipsnbsd_supply_fpreg (regcache, (char *) &fpregs, regno); } } void mips_nbsd_nat_target::store_registers (struct regcache *regcache, int regno) { pid_t pid = regcache->ptid ().pid (); struct gdbarch *gdbarch = regcache->arch (); if (regno == -1 || getregs_supplies (gdbarch, regno)) { struct reg regs; if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1) perror_with_name (_("Couldn't get registers")); mipsnbsd_fill_reg (regcache, (char *) ®s, regno); if (ptrace (PT_SETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1) perror_with_name (_("Couldn't write registers")); if (regno != -1) return; } if (regno == -1 || regno >= gdbarch_fp0_regnum (regcache->arch ())) { struct fpreg fpregs; if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1) perror_with_name (_("Couldn't get floating point status")); mipsnbsd_fill_fpreg (regcache, (char *) &fpregs, regno); if (ptrace (PT_SETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1) perror_with_name (_("Couldn't write floating point status")); } } void _initialize_mipsnbsd_nat (void) { add_inf_child_target (&the_mips_nbsd_nat_target); }