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/* Target-dependent code for OpenBSD/powerpc.
Copyright 2004 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 2 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, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include "defs.h"
#include "arch-utils.h"
#include "osabi.h"
#include "regcache.h"
#include "regset.h"
#include "gdb_string.h"
#include "ppc-tdep.h"
#include "ppcobsd-tdep.h"
#include "solib-svr4.h"
/* Register offsets from <machine/reg.h>. */
struct ppc_reg_offsets ppcobsd_reg_offsets;
/* Core file support. */
/* Supply register REGNUM in the general-purpose register set REGSET
from the buffer specified by GREGS and LEN to register cache
REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */
void
ppcobsd_supply_gregset (const struct regset *regset,
struct regcache *regcache, int regnum,
const void *gregs, size_t len)
{
ppc_supply_gregset (regset, regcache, regnum, gregs, len);
ppc_supply_fpregset (regset, regcache, regnum, gregs, len);
}
/* Collect register REGNUM in the general-purpose register set
REGSET. from register cache REGCACHE into the buffer specified by
GREGS and LEN. If REGNUM is -1, do this for all registers in
REGSET. */
void
ppcobsd_collect_gregset (const struct regset *regset,
const struct regcache *regcache, int regnum,
void *gregs, size_t len)
{
ppc_collect_gregset (regset, regcache, regnum, gregs, len);
ppc_collect_fpregset (regset, regcache, regnum, gregs, len);
}
/* OpenBS/powerpc register set. */
struct regset ppcobsd_gregset =
{
&ppcobsd_reg_offsets,
ppcobsd_supply_gregset
};
/* Return the appropriate register set for the core section identified
by SECT_NAME and SECT_SIZE. */
static const struct regset *
ppcobsd_regset_from_core_section (struct gdbarch *gdbarch,
const char *sect_name, size_t sect_size)
{
if (strcmp (sect_name, ".reg") == 0 && sect_size >= 412)
return &ppcobsd_gregset;
return NULL;
}
static void
ppcobsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
/* OpenBSD uses SVR4-style shared libraries. */
set_gdbarch_in_solib_call_trampoline
(gdbarch, generic_in_solib_call_trampoline);
set_solib_svr4_fetch_link_map_offsets
(gdbarch, svr4_ilp32_fetch_link_map_offsets);
set_gdbarch_regset_from_core_section
(gdbarch, ppcobsd_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
ppcobsd_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_ppcobsd_tdep (void);
void
_initialize_ppcobsd_tdep (void)
{
/* BFD doesn't set a flavour for NetBSD style a.out core files. */
gdbarch_register_osabi_sniffer (bfd_arch_powerpc, bfd_target_unknown_flavour,
ppcobsd_core_osabi_sniffer);
gdbarch_register_osabi (bfd_arch_powerpc, 0, GDB_OSABI_OPENBSD_ELF,
ppcobsd_init_abi);
/* Avoid initializing the register offsets again if they were
already initailized by ppcobsd-nat.c. */
if (ppcobsd_reg_offsets.pc_offset == 0)
{
/* General-purpose registers. */
ppcobsd_reg_offsets.r0_offset = 0;
ppcobsd_reg_offsets.pc_offset = 384;
ppcobsd_reg_offsets.ps_offset = 388;
ppcobsd_reg_offsets.cr_offset = 392;
ppcobsd_reg_offsets.lr_offset = 396;
ppcobsd_reg_offsets.ctr_offset = 400;
ppcobsd_reg_offsets.xer_offset = 404;
ppcobsd_reg_offsets.mq_offset = 408;
/* Floating-point registers. */
ppcobsd_reg_offsets.f0_offset = 128;
ppcobsd_reg_offsets.fpscr_offset = -1;
/* AltiVec registers. */
ppcobsd_reg_offsets.vr0_offset = 0;
ppcobsd_reg_offsets.vscr_offset = 512;
ppcobsd_reg_offsets.vrsave_offset = 520;
}
}
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