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/* Native-dependent code for FreeBSD/arm.
Copyright (C) 2017-2022 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 "target.h"
#include "elf/common.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;
/* 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)
{
fetch_register_set<struct reg> (regcache, regnum, PT_GETREGS,
&arm_fbsd_gregset);
#ifdef PT_GETVFPREGS
fetch_register_set<struct vfpreg> (regcache, regnum, PT_GETVFPREGS,
&arm_fbsd_vfpregset);
#endif
#ifdef PT_GETREGSET
gdbarch *gdbarch = regcache->arch ();
arm_gdbarch_tdep *tdep = (arm_gdbarch_tdep *) gdbarch_tdep (gdbarch);
if (tdep->tls_regnum > 0)
{
const struct regcache_map_entry arm_fbsd_tlsregmap[] =
{
{ 1, tdep->tls_regnum, 4 },
{ 0 }
};
const struct regset arm_fbsd_tlsregset =
{
arm_fbsd_tlsregmap,
regcache_supply_regset, regcache_collect_regset
};
fetch_regset<uint32_t> (regcache, regnum, NT_ARM_TLS, &arm_fbsd_tlsregset);
}
#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)
{
store_register_set<struct reg> (regcache, regnum, PT_GETREGS, PT_SETREGS,
&arm_fbsd_gregset);
#ifdef PT_GETVFPREGS
store_register_set<struct vfpreg> (regcache, regnum, PT_GETVFPREGS,
PT_SETVFPREGS, &arm_fbsd_vfpregset);
#endif
#ifdef PT_GETREGSET
gdbarch *gdbarch = regcache->arch ();
arm_gdbarch_tdep *tdep = (arm_gdbarch_tdep *) gdbarch_tdep (gdbarch);
if (tdep->tls_regnum > 0)
{
const struct regcache_map_entry arm_fbsd_tlsregmap[] =
{
{ 1, tdep->tls_regnum, 4 },
{ 0 }
};
const struct regset arm_fbsd_tlsregset =
{
arm_fbsd_tlsregmap,
regcache_supply_regset, regcache_collect_regset
};
store_regset<uint32_t> (regcache, regnum, NT_ARM_TLS, &arm_fbsd_tlsregset);
}
#endif
}
/* Implement the to_read_description method. */
const struct target_desc *
arm_fbsd_nat_target::read_description ()
{
const struct target_desc *desc;
bool tls = false;
#ifdef PT_GETREGSET
tls = have_regset (inferior_ptid, NT_ARM_TLS) != 0;
#endif
desc = arm_fbsd_read_description_auxv (this, tls);
if (desc == NULL)
desc = this->beneath ()->read_description ();
return desc;
}
void _initialize_arm_fbsd_nat ();
void
_initialize_arm_fbsd_nat ()
{
add_inf_child_target (&the_arm_fbsd_nat_target);
}
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