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- /* Native-dependent code for OpenBSD/mips64.
- Copyright (C) 2004-2022 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 "mips-tdep.h"
- #include "inf-ptrace.h"
- #include "obsd-nat.h"
- /* Shorthand for some register numbers used below. */
- #define MIPS_PC_REGNUM MIPS_EMBED_PC_REGNUM
- #define MIPS_FP0_REGNUM MIPS_EMBED_FP0_REGNUM
- #define MIPS_FSR_REGNUM MIPS_EMBED_FP0_REGNUM + 32
- struct mips64_obsd_nat_target final : public obsd_nat_target
- {
- void fetch_registers (struct regcache *, int) override;
- void store_registers (struct regcache *, int) override;
- };
- static mips64_obsd_nat_target the_mips64_obsd_nat_target;
- /* Supply the general-purpose registers stored in GREGS to REGCACHE. */
- static void
- mips64obsd_supply_gregset (struct regcache *regcache, const void *gregs)
- {
- const char *regs = gregs;
- int regnum;
- for (regnum = MIPS_ZERO_REGNUM; regnum <= MIPS_PC_REGNUM; regnum++)
- regcache->raw_supply (regnum, regs + regnum * 8);
- for (regnum = MIPS_FP0_REGNUM; regnum <= MIPS_FSR_REGNUM; regnum++)
- regcache->raw_supply (regnum, regs + (regnum + 2) * 8);
- }
- /* Collect the general-purpose registers from REGCACHE and store them
- in GREGS. */
- static void
- mips64obsd_collect_gregset (const struct regcache *regcache,
- void *gregs, int regnum)
- {
- char *regs = gregs;
- int i;
- for (i = MIPS_ZERO_REGNUM; i <= MIPS_PC_REGNUM; i++)
- {
- if (regnum == -1 || regnum == i)
- regcache->raw_collect (i, regs + i * 8);
- }
- for (i = MIPS_FP0_REGNUM; i <= MIPS_FSR_REGNUM; i++)
- {
- if (regnum == -1 || regnum == i)
- regcache->raw_collect (i, regs + (i + 2) * 8);
- }
- }
- /* Fetch register REGNUM from the inferior. If REGNUM is -1, do this
- for all registers. */
- void
- mips64_obsd_nat_target::fetch_registers (struct regcache *regcache, int regnum)
- {
- struct reg regs;
- pid_t pid = regcache->ptid ().pid ();
- if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
- perror_with_name (_("Couldn't get registers"));
- mips64obsd_supply_gregset (regcache, ®s);
- }
- /* Store register REGNUM back into the inferior. If REGNUM is -1, do
- this for all registers. */
- static void
- mips64_obsd_nat_target::store_registers (struct regcache *regcache, int regnum)
- {
- struct reg regs;
- pid_t pid = regcache->ptid ().pid ();
- if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
- perror_with_name (_("Couldn't get registers"));
- mips64obsd_collect_gregset (regcache, ®s, regnum);
- if (ptrace (PT_SETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
- perror_with_name (_("Couldn't write registers"));
- }
- void _initialize_mips64obsd_nat ();
- void
- _initialize_mips64obsd_nat ()
- {
- add_inf_child_target (&the_mips64_obsd_nat_target);
- }
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