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/* Target-dependent code for OpenBSD/hppa
Copyright (C) 2004-2013 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 "gdb_assert.h"
#include "gdb_string.h"
#include "hppa-tdep.h"
#include "hppabsd-tdep.h"
/* Core file support. */
/* Sizeof `struct reg' in <machine/reg.h>. */
#define HPPAOBSD_SIZEOF_GREGS (34 * 4)
/* 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)
{
const gdb_byte *regs = gregs;
size_t offset;
int i;
gdb_assert (len >= HPPAOBSD_SIZEOF_GREGS);
for (i = HPPA_R1_REGNUM, offset = 4; i <= HPPA_R31_REGNUM; i++, offset += 4)
{
if (regnum == -1 || regnum == i)
regcache_raw_supply (regcache, i, regs + offset);
}
if (regnum == -1 || regnum == HPPA_SAR_REGNUM)
regcache_raw_supply (regcache, HPPA_SAR_REGNUM, regs);
if (regnum == -1 || regnum == HPPA_PCOQ_HEAD_REGNUM)
regcache_raw_supply (regcache, HPPA_PCOQ_HEAD_REGNUM, regs + 32 * 4);
if (regnum == -1 || regnum == HPPA_PCOQ_TAIL_REGNUM)
regcache_raw_supply (regcache, 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)
{
struct gdbarch *gdbarch = get_regcache_arch (regcache);
const gdb_byte *regs = 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 (regcache, i, regs + (i - HPPA_FP0_REGNUM) * 4);
}
}
/* OpenBSD/hppa register sets. */
static struct regset hppaobsd_gregset =
{
NULL,
hppaobsd_supply_gregset
};
static struct regset hppaobsd_fpregset =
{
NULL,
hppaobsd_supply_fpregset
};
/* Return the appropriate register set for the core section identified
by SECT_NAME and SECT_SIZE. */
static const struct regset *
hppaobsd_regset_from_core_section (struct gdbarch *gdbarch,
const char *sect_name, size_t sect_size)
{
if (strcmp (sect_name, ".reg") == 0 && sect_size >= HPPAOBSD_SIZEOF_GREGS)
return &hppaobsd_gregset;
if (strcmp (sect_name, ".reg2") == 0 && sect_size >= HPPAOBSD_SIZEOF_FPREGS)
return &hppaobsd_fpregset;
return NULL;
}
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_regset_from_core_section
(gdbarch, hppaobsd_regset_from_core_section);
}
/* OpenBSD uses uses the traditional NetBSD core file format, even for
ports that use ELF. */
#define GDB_OSABI_NETBSD_CORE GDB_OSABI_OPENBSD_ELF
static enum gdb_osabi
hppaobsd_core_osabi_sniffer (bfd *abfd)
{
if (strcmp (bfd_get_target (abfd), "netbsd-core") == 0)
return GDB_OSABI_NETBSD_CORE;
return GDB_OSABI_UNKNOWN;
}
/* Provide a prototype to silence -Wmissing-prototypes. */
void _initialize_hppabsd_tdep (void);
void
_initialize_hppabsd_tdep (void)
{
/* BFD doesn't set a flavour for NetBSD style a.out core files. */
gdbarch_register_osabi_sniffer (bfd_arch_hppa, bfd_target_unknown_flavour,
hppaobsd_core_osabi_sniffer);
gdbarch_register_osabi (bfd_arch_hppa, 0, GDB_OSABI_OPENBSD_ELF,
hppaobsd_init_abi);
}
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