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- /* Native-dependent code for NetBSD/hppa.
- Copyright (C) 2008-2022 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 <sys/types.h>
- #include <sys/ptrace.h>
- #include <machine/reg.h>
- #include "hppa-tdep.h"
- #include "inf-ptrace.h"
- #include "netbsd-nat.h"
- class hppa_nbsd_nat_target final : public nbsd_nat_target
- {
- void fetch_registers (struct regcache *, int) override;
- void store_registers (struct regcache *, int) override;
- };
- static hppa_nbsd_nat_target the_hppa_nbsd_nat_target;
- static int
- hppanbsd_gregset_supplies_p (int regnum)
- {
- return ((regnum >= HPPA_R0_REGNUM && regnum <= HPPA_R31_REGNUM) ||
- (regnum >= HPPA_SAR_REGNUM && regnum <= HPPA_PCSQ_TAIL_REGNUM) ||
- regnum == HPPA_IPSW_REGNUM ||
- (regnum >= HPPA_SR4_REGNUM && regnum <= HPPA_SR4_REGNUM + 5));
- }
- static int
- hppanbsd_fpregset_supplies_p (int regnum)
- {
- return (regnum >= HPPA_FP0_REGNUM && regnum <= HPPA_FP31R_REGNUM);
- }
- /* Supply the general-purpose registers stored in GREGS to REGCACHE. */
- static void
- hppanbsd_supply_gregset (struct regcache *regcache, const void *gregs)
- {
- const char *regs = gregs;
- const int *r = gregs;
- int regnum;
- for (regnum = HPPA_R1_REGNUM; regnum <= HPPA_R31_REGNUM; regnum++)
- regcache->raw_supply (regnum, regs + regnum * 4);
- regcache->raw_supply (HPPA_SAR_REGNUM, regs + 32 * 4);
- regcache->raw_supply (HPPA_PCSQ_HEAD_REGNUM, regs + 33 * 4);
- regcache->raw_supply (HPPA_PCSQ_TAIL_REGNUM, regs + 34 * 4);
- regcache->raw_supply (HPPA_PCOQ_HEAD_REGNUM, regs + 35 * 4);
- regcache->raw_supply (HPPA_PCOQ_TAIL_REGNUM, regs + 36 * 4);
- regcache->raw_supply (HPPA_IPSW_REGNUM, regs);
- regcache->raw_supply (HPPA_SR4_REGNUM, regs + 41 * 4);
- regcache->raw_supply (HPPA_SR4_REGNUM + 1, regs + 37 * 4);
- regcache->raw_supply (HPPA_SR4_REGNUM + 2, regs + 38 * 4);
- regcache->raw_supply (HPPA_SR4_REGNUM + 3, regs + 39 * 4);
- regcache->raw_supply (HPPA_SR4_REGNUM + 4, regs + 40 * 4);
- }
- /* Supply the floating-point registers stored in FPREGS to REGCACHE. */
- static void
- hppanbsd_supply_fpregset (struct regcache *regcache, const void *fpregs)
- {
- const char *regs = fpregs;
- int regnum;
- for (regnum = HPPA_FP0_REGNUM; regnum <= HPPA_FP31R_REGNUM;
- regnum += 2, regs += 8)
- {
- regcache->raw_supply (regnum, regs);
- regcache->raw_supply (regnum + 1, regs + 4);
- }
- }
- /* Collect the general-purpose registers from REGCACHE and store them
- in GREGS. */
- static void
- hppanbsd_collect_gregset (const struct regcache *regcache,
- void *gregs, int regnum)
- {
- char *regs = gregs;
- int *r = gregs;
- int i;
- for (i = HPPA_R1_REGNUM; i <= HPPA_R31_REGNUM; i++)
- {
- if (regnum == -1 || regnum == i)
- regcache->raw_collect (i, regs + i * 4);
- }
- if (regnum == -1 || regnum == HPPA_IPSW_REGNUM)
- regcache->raw_collect (HPPA_IPSW_REGNUM, regs);
- if (regnum == -1 || regnum == HPPA_PCOQ_HEAD_REGNUM)
- regcache->raw_collect (HPPA_PCOQ_HEAD_REGNUM, regs + 35 * 4);
- if (regnum == -1 || regnum == HPPA_PCOQ_TAIL_REGNUM)
- regcache->raw_collect (HPPA_PCOQ_TAIL_REGNUM, regs + 36 * 4);
- if (regnum == -1 || regnum == HPPA_SAR_REGNUM)
- regcache->raw_collect (HPPA_SAR_REGNUM, regs + 32 * 4);
- if (regnum == -1 || regnum == HPPA_PCSQ_HEAD_REGNUM)
- regcache->raw_collect (HPPA_PCSQ_HEAD_REGNUM, regs + 33 * 4);
- if (regnum == -1 || regnum == HPPA_PCSQ_TAIL_REGNUM)
- regcache->raw_collect (HPPA_PCSQ_TAIL_REGNUM, regs + 34 * 4);
- if (regnum == -1 || regnum == HPPA_PCOQ_HEAD_REGNUM)
- regcache->raw_collect (HPPA_PCOQ_HEAD_REGNUM, regs + 35 * 4);
- if (regnum == -1 || regnum == HPPA_PCOQ_TAIL_REGNUM)
- regcache->raw_collect (HPPA_PCOQ_TAIL_REGNUM, regs + 36 * 4);
- if (regnum == -1 || regnum == HPPA_IPSW_REGNUM)
- regcache->raw_collect (HPPA_IPSW_REGNUM, regs);
- if (regnum == -1 || regnum == HPPA_SR4_REGNUM)
- regcache->raw_collect (HPPA_SR4_REGNUM, regs + 41 * 4);
- if (regnum == -1 || regnum == HPPA_SR4_REGNUM + 1)
- regcache->raw_collect (HPPA_SR4_REGNUM + 1, regs + 37 * 4);
- if (regnum == -1 || regnum == HPPA_SR4_REGNUM + 2)
- regcache->raw_collect (HPPA_SR4_REGNUM + 2, regs + 38 * 4);
- if (regnum == -1 || regnum == HPPA_SR4_REGNUM + 3)
- regcache->raw_collect (HPPA_SR4_REGNUM + 3, regs + 39 * 4);
- if (regnum == -1 || regnum == HPPA_SR4_REGNUM + 4)
- regcache->raw_collect (HPPA_SR4_REGNUM + 4, regs + 40 * 4);
- }
- /* Collect the floating-point registers from REGCACHE and store them
- in FPREGS. */
- static void
- hppanbsd_collect_fpregset (struct regcache *regcache,
- void *fpregs, int regnum)
- {
- char *regs = fpregs;
- int i;
- for (i = HPPA_FP0_REGNUM; i <= HPPA_FP31R_REGNUM; i += 2, regs += 8)
- {
- if (regnum == -1 || regnum == i || regnum == i + 1)
- {
- regcache->raw_collect (i, regs);
- regcache->raw_collect (i + 1, regs + 4);
- }
- }
- }
- /* Fetch register REGNUM from the inferior. If REGNUM is -1, do this
- for all registers (including the floating-point registers). */
- void
- hppa_nbsd_nat_target::fetch_registers (struct regcache *regcache, int regnum)
- {
- pid_t pid = regcache->ptid ().pid ();
- int lwp = regcache->ptid ().lwp ();
- if (regnum == -1 || hppanbsd_gregset_supplies_p (regnum))
- {
- struct reg regs;
- if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) ®s, lwp) == -1)
- perror_with_name (_("Couldn't get registers"));
- hppanbsd_supply_gregset (regcache, ®s);
- }
- if (regnum == -1 || hppanbsd_fpregset_supplies_p (regnum))
- {
- struct fpreg fpregs;
- if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, lwp) == -1)
- perror_with_name (_("Couldn't get floating point status"));
- hppanbsd_supply_fpregset (regcache, &fpregs);
- }
- }
- /* Store register REGNUM back into the inferior. If REGNUM is -1, do
- this for all registers (including the floating-point registers). */
- void
- hppa_nbsd_nat_target::store_registers (struct regcache *regcache, int regnum)
- {
- pid_t pid = regcache->ptid ().pid ();
- int lwp = regcache->ptid ().lwp ();
- if (regnum == -1 || hppanbsd_gregset_supplies_p (regnum))
- {
- struct reg regs;
- if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) ®s, lwp) == -1)
- perror_with_name (_("Couldn't get registers"));
- hppanbsd_collect_gregset (regcache, ®s, regnum);
- if (ptrace (PT_SETREGS, pid, (PTRACE_TYPE_ARG3) ®s, lwp) == -1)
- perror_with_name (_("Couldn't write registers"));
- }
- if (regnum == -1 || hppanbsd_fpregset_supplies_p (regnum))
- {
- struct fpreg fpregs;
- if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, lwp) == -1)
- perror_with_name (_("Couldn't get floating point status"));
- hppanbsd_collect_fpregset (regcache, &fpregs, regnum);
- if (ptrace (PT_SETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, lwp) == -1)
- perror_with_name (_("Couldn't write floating point status"));
- }
- }
- void _initialize_hppanbsd_nat ();
- void
- _initialize_hppanbsd_nat ()
- {
- add_inf_child_target (&the_hppa_nbsd_nat_target);
- }
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