gdb/riscv-fbsd-nat.c

   1 /* Native-dependent code for FreeBSD/riscv.
   2
   3    Copyright (C) 2018-2024 Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   6
   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.
  11
  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.
  16
  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/>.  */
  19
  20 #include "regcache.h"
  21 #include "target.h"
  22
  23 #include <sys/types.h>
  24 #include <sys/ptrace.h>
  25 #include <machine/reg.h>
  26
  27 #include "fbsd-nat.h"
  28 #include "riscv-tdep.h"
  29 #include "riscv-fbsd-tdep.h"
  30 #include "inf-ptrace.h"
  31
  32 struct riscv_fbsd_nat_target final : public fbsd_nat_target
  33 {
  34   void fetch_registers (struct regcache *, int) override;
  35   void store_registers (struct regcache *, int) override;
  36 };
  37
  38 static riscv_fbsd_nat_target the_riscv_fbsd_nat_target;
  39
  40 /* Fetch register REGNUM from the inferior.  If REGNUM is -1, do this
  41    for all registers.  */
  42
  43 void
  44 riscv_fbsd_nat_target::fetch_registers (struct regcache *regcache,
  45                                         int regnum)
  46 {
  47   if (regnum == -1 || regnum == RISCV_ZERO_REGNUM)
  48     regcache->raw_supply_zeroed (RISCV_ZERO_REGNUM);
  49   fetch_register_set<struct reg> (regcache, regnum, PT_GETREGS,
  50                                   &riscv_fbsd_gregset);
  51   fetch_register_set<struct fpreg> (regcache, regnum, PT_GETFPREGS,
  52                                     &riscv_fbsd_fpregset);
  53 }
  54
  55 /* Store register REGNUM back into the inferior.  If REGNUM is -1, do
  56    this for all registers.  */
  57
  58 void
  59 riscv_fbsd_nat_target::store_registers (struct regcache *regcache,
  60                                         int regnum)
  61 {
  62   store_register_set<struct reg> (regcache, regnum, PT_GETREGS, PT_SETREGS,
  63                                   &riscv_fbsd_gregset);
  64   store_register_set<struct fpreg> (regcache, regnum, PT_GETFPREGS,
  65                                     PT_SETFPREGS, &riscv_fbsd_fpregset);
  66 }
  67
  68 void _initialize_riscv_fbsd_nat ();
  69 void
  70 _initialize_riscv_fbsd_nat ()
  71 {
  72   add_inf_child_target (&the_riscv_fbsd_nat_target);
  73 }