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/* Target-dependent code for OpenBSD/hppa
Copyright (C) 2004-2021 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 "osabi.h"
#include "regcache.h"
#include "regset.h"
#include "hppa-tdep.h"
#include "hppa-bsd-tdep.h"
#include "gdbarch.h"
/* Core file support. */
/* Sizeof `struct reg' in <machine/reg.h>. */
#define HPPAOBSD_SIZEOF_GREGS (34 * 4) /* OpenBSD 5.1 and earlier. */
#define HPPANBSD_SIZEOF_GREGS (46 * 4) /* NetBSD and OpenBSD 5.2 and later. */
/* Sizeof `struct fpreg' in <machine/reg.h>. */
#define HPPAOBSD_SIZEOF_FPREGS (32 * 8)
/* Supply register REGNUM from the buffer specified by GREGS and LEN
in the general-purpose register set REGSET to register cache
REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */
static void
hppaobsd_supply_gregset (const struct regset *regset,
struct regcache *regcache,
int regnum, const void *gregs, size_t len)
{
gdb_byte zero[4] = { 0 };
const gdb_byte *regs = (const gdb_byte *) gregs;
size_t offset;
int i;
gdb_assert (len >= HPPAOBSD_SIZEOF_GREGS);
if (regnum == -1 || regnum == HPPA_R0_REGNUM)
regcache->raw_supply (HPPA_R0_REGNUM, &zero);
for (i = HPPA_R1_REGNUM, offset = 4; i <= HPPA_R31_REGNUM; i++, offset += 4)
{
if (regnum == -1 || regnum == i)
regcache->raw_supply (i, regs + offset);
}
if (len >= HPPANBSD_SIZEOF_GREGS)
{
if (regnum == -1 || regnum == HPPA_IPSW_REGNUM)
regcache->raw_supply (HPPA_IPSW_REGNUM, regs);
if (regnum == -1 || regnum == HPPA_SAR_REGNUM)
regcache->raw_supply (HPPA_SAR_REGNUM, regs + 32 * 4);
if (regnum == -1 || regnum == HPPA_PCSQ_HEAD_REGNUM)
regcache->raw_supply (HPPA_PCSQ_HEAD_REGNUM, regs + 33 * 4);
if (regnum == -1 || regnum == HPPA_PCSQ_TAIL_REGNUM)
regcache->raw_supply (HPPA_PCSQ_TAIL_REGNUM, regs + 34 * 4);
if (regnum == -1 || regnum == HPPA_PCOQ_HEAD_REGNUM)
regcache->raw_supply (HPPA_PCOQ_HEAD_REGNUM, regs + 35 * 4);
if (regnum == -1 || regnum == HPPA_PCOQ_TAIL_REGNUM)
regcache->raw_supply (HPPA_PCOQ_TAIL_REGNUM, regs + 36 * 4);
if (regnum == -1 || regnum == HPPA_SR0_REGNUM)
regcache->raw_supply (HPPA_SR0_REGNUM, regs + 37 * 4);
if (regnum == -1 || regnum == HPPA_SR1_REGNUM)
regcache->raw_supply (HPPA_SR1_REGNUM, regs + 38 * 4);
if (regnum == -1 || regnum == HPPA_SR2_REGNUM)
regcache->raw_supply (HPPA_SR2_REGNUM, regs + 39 * 4);
if (regnum == -1 || regnum == HPPA_SR3_REGNUM)
regcache->raw_supply (HPPA_SR3_REGNUM, regs + 40 * 4);
if (regnum == -1 || regnum == HPPA_SR4_REGNUM)
regcache->raw_supply (HPPA_SR4_REGNUM, regs + 41 * 4);
if (regnum == -1 || regnum == HPPA_SR5_REGNUM)
regcache->raw_supply (HPPA_SR5_REGNUM, regs + 42 * 4);
if (regnum == -1 || regnum == HPPA_SR6_REGNUM)
regcache->raw_supply (HPPA_SR6_REGNUM, regs + 43 * 4);
if (regnum == -1 || regnum == HPPA_SR7_REGNUM)
regcache->raw_supply (HPPA_SR7_REGNUM, regs + 44 * 4);
if (regnum == -1 || regnum == HPPA_CR26_REGNUM)
regcache->raw_supply (HPPA_CR26_REGNUM, regs + 45 * 4);
if (regnum == -1 || regnum == HPPA_CR27_REGNUM)
regcache->raw_supply (HPPA_CR27_REGNUM, regs + 46 * 4);
}
else
{
if (regnum == -1 || regnum == HPPA_SAR_REGNUM)
regcache->raw_supply (HPPA_SAR_REGNUM, regs);
if (regnum == -1 || regnum == HPPA_PCOQ_HEAD_REGNUM)
regcache->raw_supply (HPPA_PCOQ_HEAD_REGNUM, regs + 32 * 4);
if (regnum == -1 || regnum == HPPA_PCOQ_TAIL_REGNUM)
regcache->raw_supply (HPPA_PCOQ_TAIL_REGNUM, regs + 33 * 4);
}
}
/* Supply register REGNUM from the buffer specified by FPREGS and LEN
in the floating-point register set REGSET to register cache
REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */
static void
hppaobsd_supply_fpregset (const struct regset *regset,
struct regcache *regcache,
int regnum, const void *fpregs, size_t len)
{
const gdb_byte *regs = (const gdb_byte *) fpregs;
int i;
gdb_assert (len >= HPPAOBSD_SIZEOF_FPREGS);
for (i = HPPA_FP0_REGNUM; i <= HPPA_FP31R_REGNUM; i++)
{
if (regnum == i || regnum == -1)
regcache->raw_supply (i, regs + (i - HPPA_FP0_REGNUM) * 4);
}
}
/* OpenBSD/hppa register sets. */
static const struct regset hppaobsd_gregset =
{
NULL,
hppaobsd_supply_gregset,
NULL,
REGSET_VARIABLE_SIZE
};
static const struct regset hppaobsd_fpregset =
{
NULL,
hppaobsd_supply_fpregset
};
/* Iterate over supported core file register note sections. */
static void
hppaobsd_iterate_over_regset_sections (struct gdbarch *gdbarch,
iterate_over_regset_sections_cb *cb,
void *cb_data,
const struct regcache *regcache)
{
cb (".reg", HPPAOBSD_SIZEOF_GREGS, HPPAOBSD_SIZEOF_GREGS, &hppaobsd_gregset,
NULL, cb_data);
cb (".reg2", HPPAOBSD_SIZEOF_FPREGS, HPPAOBSD_SIZEOF_FPREGS,
&hppaobsd_fpregset, NULL, cb_data);
}
static void
hppaobsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
/* Obviously OpenBSD is BSD-based. */
hppabsd_init_abi (info, gdbarch);
/* Core file support. */
set_gdbarch_iterate_over_regset_sections
(gdbarch, hppaobsd_iterate_over_regset_sections);
}
void _initialize_hppabsd_tdep ();
void
_initialize_hppabsd_tdep ()
{
gdbarch_register_osabi (bfd_arch_hppa, 0, GDB_OSABI_OPENBSD,
hppaobsd_init_abi);
}
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