mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-11-24 10:35:12 +08:00
151 lines
4.0 KiB
C
151 lines
4.0 KiB
C
/* Native-dependent code for FreeBSD/arm.
|
|
|
|
Copyright (C) 2017-2020 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 "target.h"
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/ptrace.h>
|
|
#include <machine/reg.h>
|
|
|
|
#include "fbsd-nat.h"
|
|
#include "arm-tdep.h"
|
|
#include "arm-fbsd-tdep.h"
|
|
#include "inf-ptrace.h"
|
|
|
|
struct arm_fbsd_nat_target : public fbsd_nat_target
|
|
{
|
|
void fetch_registers (struct regcache *, int) override;
|
|
void store_registers (struct regcache *, int) override;
|
|
const struct target_desc *read_description () override;
|
|
};
|
|
|
|
static arm_fbsd_nat_target the_arm_fbsd_nat_target;
|
|
|
|
/* Determine if PT_GETREGS fetches REGNUM. */
|
|
|
|
static bool
|
|
getregs_supplies (int regnum)
|
|
{
|
|
return ((regnum >= ARM_A1_REGNUM && regnum <= ARM_PC_REGNUM)
|
|
|| regnum == ARM_PS_REGNUM);
|
|
}
|
|
|
|
#ifdef PT_GETVFPREGS
|
|
/* Determine if PT_GETVFPREGS fetches REGNUM. */
|
|
|
|
static bool
|
|
getvfpregs_supplies (int regnum)
|
|
{
|
|
return ((regnum >= ARM_D0_REGNUM && regnum <= ARM_D31_REGNUM)
|
|
|| regnum == ARM_FPSCR_REGNUM);
|
|
}
|
|
#endif
|
|
|
|
/* Fetch register REGNUM from the inferior. If REGNUM is -1, do this
|
|
for all registers. */
|
|
|
|
void
|
|
arm_fbsd_nat_target::fetch_registers (struct regcache *regcache, int regnum)
|
|
{
|
|
pid_t pid = get_ptrace_pid (regcache->ptid ());
|
|
|
|
if (regnum == -1 || getregs_supplies (regnum))
|
|
{
|
|
struct reg regs;
|
|
|
|
if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
|
|
perror_with_name (_("Couldn't get registers"));
|
|
|
|
regcache->supply_regset (&arm_fbsd_gregset, regnum, ®s,
|
|
sizeof (regs));
|
|
}
|
|
|
|
#ifdef PT_GETVFPREGS
|
|
if (regnum == -1 || getvfpregs_supplies (regnum))
|
|
{
|
|
struct vfpreg vfpregs;
|
|
|
|
if (ptrace (PT_GETVFPREGS, pid, (PTRACE_TYPE_ARG3) &vfpregs, 0) == -1)
|
|
perror_with_name (_("Couldn't get floating point status"));
|
|
|
|
regcache->supply_regset (&arm_fbsd_vfpregset, regnum, &vfpregs,
|
|
sizeof (vfpregs));
|
|
}
|
|
#endif
|
|
}
|
|
|
|
/* Store register REGNUM back into the inferior. If REGNUM is -1, do
|
|
this for all registers. */
|
|
|
|
void
|
|
arm_fbsd_nat_target::store_registers (struct regcache *regcache, int regnum)
|
|
{
|
|
pid_t pid = get_ptrace_pid (regcache->ptid ());
|
|
|
|
if (regnum == -1 || getregs_supplies (regnum))
|
|
{
|
|
struct reg regs;
|
|
|
|
if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
|
|
perror_with_name (_("Couldn't get registers"));
|
|
|
|
regcache->collect_regset (&arm_fbsd_gregset, regnum, ®s,
|
|
sizeof (regs));
|
|
|
|
if (ptrace (PT_SETREGS, pid, (PTRACE_TYPE_ARG3) ®s, 0) == -1)
|
|
perror_with_name (_("Couldn't write registers"));
|
|
}
|
|
|
|
#ifdef PT_GETVFPREGS
|
|
if (regnum == -1 || getvfpregs_supplies (regnum))
|
|
{
|
|
struct vfpreg vfpregs;
|
|
|
|
if (ptrace (PT_GETVFPREGS, pid, (PTRACE_TYPE_ARG3) &vfpregs, 0) == -1)
|
|
perror_with_name (_("Couldn't get floating point status"));
|
|
|
|
regcache->collect_regset (&arm_fbsd_vfpregset, regnum, &vfpregs,
|
|
sizeof (vfpregs));
|
|
|
|
if (ptrace (PT_SETVFPREGS, pid, (PTRACE_TYPE_ARG3) &vfpregs, 0) == -1)
|
|
perror_with_name (_("Couldn't write floating point status"));
|
|
}
|
|
#endif
|
|
}
|
|
|
|
/* Implement the to_read_description method. */
|
|
|
|
const struct target_desc *
|
|
arm_fbsd_nat_target::read_description ()
|
|
{
|
|
const struct target_desc *desc;
|
|
|
|
desc = arm_fbsd_read_description_auxv (this);
|
|
if (desc == NULL)
|
|
desc = this->beneath ()->read_description ();
|
|
return desc;
|
|
}
|
|
|
|
void
|
|
_initialize_arm_fbsd_nat (void)
|
|
{
|
|
add_inf_child_target (&the_arm_fbsd_nat_target);
|
|
}
|