127 lines
3.5 KiB
C
127 lines
3.5 KiB
C
/* Target-dependent code for OpenBSD/hppa
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Copyright (C) 2004, 2005, 2006, 2008, 2009, 2010
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Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "osabi.h"
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#include "regcache.h"
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#include "regset.h"
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#include "gdb_assert.h"
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#include "gdb_string.h"
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#include "hppa-tdep.h"
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#include "hppabsd-tdep.h"
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/* Core file support. */
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/* Sizeof `struct reg' in <machine/reg.h>. */
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#define HPPABSD_SIZEOF_GREGS (34 * 4)
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/* Supply register REGNUM from the buffer specified by GREGS and LEN
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in the general-purpose register set REGSET to register cache
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REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */
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static void
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hppabsd_supply_gregset (const struct regset *regset, struct regcache *regcache,
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int regnum, const void *gregs, size_t len)
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{
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const gdb_byte *regs = gregs;
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size_t offset;
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int i;
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gdb_assert (len >= HPPABSD_SIZEOF_GREGS);
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for (i = HPPA_R1_REGNUM, offset = 4; i <= HPPA_R31_REGNUM; i++, offset += 4)
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{
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if (regnum == -1 || regnum == i)
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regcache_raw_supply (regcache, i, regs + offset);
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}
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if (regnum == -1 || regnum == HPPA_SAR_REGNUM)
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regcache_raw_supply (regcache, HPPA_SAR_REGNUM, regs);
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if (regnum == -1 || regnum == HPPA_PCOQ_HEAD_REGNUM)
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regcache_raw_supply (regcache, HPPA_PCOQ_HEAD_REGNUM, regs + 32 * 4);
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if (regnum == -1 || regnum == HPPA_PCOQ_TAIL_REGNUM)
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regcache_raw_supply (regcache, HPPA_PCOQ_TAIL_REGNUM, regs + 33 * 4);
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}
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/* OpenBSD/hppa register set. */
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static struct regset hppabsd_gregset =
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{
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NULL,
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hppabsd_supply_gregset
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};
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/* Return the appropriate register set for the core section identified
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by SECT_NAME and SECT_SIZE. */
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static const struct regset *
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hppaobsd_regset_from_core_section (struct gdbarch *gdbarch,
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const char *sect_name, size_t sect_size)
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{
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if (strcmp (sect_name, ".reg") == 0 && sect_size >= HPPABSD_SIZEOF_GREGS)
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return &hppabsd_gregset;
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return NULL;
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}
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static void
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hppaobsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
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{
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/* Obviously OpenBSD is BSD-based. */
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hppabsd_init_abi (info, gdbarch);
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/* Core file support. */
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set_gdbarch_regset_from_core_section
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(gdbarch, hppaobsd_regset_from_core_section);
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}
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/* OpenBSD uses uses the traditional NetBSD core file format, even for
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ports that use ELF. */
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#define GDB_OSABI_NETBSD_CORE GDB_OSABI_OPENBSD_ELF
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static enum gdb_osabi
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hppaobsd_core_osabi_sniffer (bfd *abfd)
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{
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if (strcmp (bfd_get_target (abfd), "netbsd-core") == 0)
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return GDB_OSABI_NETBSD_CORE;
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return GDB_OSABI_UNKNOWN;
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}
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/* Provide a prototype to silence -Wmissing-prototypes. */
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void _initialize_hppabsd_tdep (void);
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void
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_initialize_hppabsd_tdep (void)
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{
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/* BFD doesn't set a flavour for NetBSD style a.out core files. */
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gdbarch_register_osabi_sniffer (bfd_arch_hppa, bfd_target_unknown_flavour,
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hppaobsd_core_osabi_sniffer);
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gdbarch_register_osabi (bfd_arch_hppa, 0, GDB_OSABI_OPENBSD_ELF,
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hppaobsd_init_abi);
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}
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