gdb/riscv-fbsd-nat.c

   1 /* Native-dependent code for FreeBSD/riscv.
   2
   3    Copyright (C) 2018-2022 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 "defs.h"
  21 #include "regcache.h"
  22 #include "target.h"
  23
  24 #include <sys/types.h>
  25 #include <sys/ptrace.h>
  26 #include <machine/reg.h>
  27
  28 #include "fbsd-nat.h"
  29 #include "riscv-tdep.h"
  30 #include "riscv-fbsd-tdep.h"
  31 #include "inf-ptrace.h"
  32
  33 struct riscv_fbsd_nat_target final : public fbsd_nat_target
  34 {
  35   void fetch_registers (struct regcache *, int) override;
  36   void store_registers (struct regcache *, int) override;
  37 };
  38
  39 static riscv_fbsd_nat_target the_riscv_fbsd_nat_target;
  40
  41 /* Fetch register REGNUM from the inferior.  If REGNUM is -1, do this
  42    for all registers.  */
  43
  44 void
  45 riscv_fbsd_nat_target::fetch_registers (struct regcache *regcache,
  46                                         int regnum)
  47 {
  48   if (regnum == -1 || regnum == RISCV_ZERO_REGNUM)
  49     regcache->raw_supply_zeroed (RISCV_ZERO_REGNUM);
  50   fetch_register_set<struct reg> (regcache, regnum, PT_GETREGS,
  51                                   &riscv_fbsd_gregset);
  52   fetch_register_set<struct fpreg> (regcache, regnum, PT_GETFPREGS,
  53                                     &riscv_fbsd_fpregset);
  54 }
  55
  56 /* Store register REGNUM back into the inferior.  If REGNUM is -1, do
  57    this for all registers.  */
  58
  59 void
  60 riscv_fbsd_nat_target::store_registers (struct regcache *regcache,
  61                                         int regnum)
  62 {
  63   store_register_set<struct reg> (regcache, regnum, PT_GETREGS, PT_SETREGS,
  64                                   &riscv_fbsd_gregset);
  65   store_register_set<struct fpreg> (regcache, regnum, PT_GETFPREGS,
  66                                     PT_SETFPREGS, &riscv_fbsd_fpregset);
  67 }
  68
  69 void _initialize_riscv_fbsd_nat ();
  70 void
  71 _initialize_riscv_fbsd_nat ()
  72 {
  73   add_inf_child_target (&the_riscv_fbsd_nat_target);
  74 }