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/* Target-dependent code for NetBSD/i386, for GDB.
Copyright 1988, 1989, 1991, 1992, 1994, 1996, 2000, 2001, 2002
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 "gdbtypes.h"
#include "gdbcore.h"
#include "regcache.h"
#include "i387-tdep.h"
/* Map a GDB register number to an offset in the reg structure. */
static int regmap[] =
{
( 0 * 4), /* %eax */
( 1 * 4), /* %ecx */
( 2 * 4), /* %edx */
( 3 * 4), /* %ebx */
( 4 * 4), /* %esp */
( 5 * 4), /* %epb */
( 6 * 4), /* %esi */
( 7 * 4), /* %edi */
( 8 * 4), /* %eip */
( 9 * 4), /* %eflags */
(10 * 4), /* %cs */
(11 * 4), /* %ss */
(12 * 4), /* %ds */
(13 * 4), /* %es */
(14 * 4), /* %fs */
(15 * 4), /* %gs */
};
#define SIZEOF_STRUCT_REG (16 * 4)
static void
i386nbsd_supply_reg (char *regs, int regno)
{
int i;
for (i = 0; i <= 15; i++)
if (regno == i || regno == -1)
supply_register (i, regs + regmap[i]);
}
static void
fetch_core_registers (char *core_reg_sect, unsigned core_reg_size, int which,
CORE_ADDR ignore)
{
char *regs, *fsave;
/* We get everything from one section. */
if (which != 0)
return;
if (core_reg_size < (SIZEOF_STRUCT_REG + 108))
{
warning ("Wrong size register set in core file.");
return;
}
regs = core_reg_sect;
fsave = core_reg_sect + SIZEOF_STRUCT_REG;
/* Integer registers. */
i386nbsd_supply_reg (regs, -1);
/* Floating point registers. */
i387_supply_fsave (fsave);
}
static void
fetch_elfcore_registers (char *core_reg_sect, unsigned core_reg_size, int which,
CORE_ADDR ignore)
{
switch (which)
{
case 0: /* Integer registers. */
if (core_reg_size != SIZEOF_STRUCT_REG)
warning ("Wrong size register set in core file.");
else
i386nbsd_supply_reg (core_reg_sect, -1);
break;
case 2: /* Floating point registers. */
if (core_reg_size != 108)
warning ("Wrong size FP register set in core file.");
else
i387_supply_fsave (core_reg_sect);
break;
case 3: /* "Extended" floating point registers. This is gdb-speak
for SSE/SSE2. */
if (core_reg_size != 512)
warning ("Wrong size XMM register set in core file.");
else
i387_supply_fxsave (core_reg_sect);
break;
default:
/* Don't know what kind of register request this is; just ignore it. */
break;
}
}
static struct core_fns i386nbsd_core_fns =
{
bfd_target_unknown_flavour, /* core_flavour */
default_check_format, /* check_format */
default_core_sniffer, /* core_sniffer */
fetch_core_registers, /* core_read_registers */
NULL /* next */
};
static struct core_fns i386nbsd_elfcore_fns =
{
bfd_target_elf_flavour, /* core_flavour */
default_check_format, /* check_format */
default_core_sniffer, /* core_sniffer */
fetch_elfcore_registers, /* core_read_registers */
NULL /* next */
};
/* FIXME: should be multi-arch'd */
int
i386nbsd_aout_use_struct_convention (int gcc_p, struct type *type)
{
return !(TYPE_LENGTH (type) == 1
|| TYPE_LENGTH (type) == 2
|| TYPE_LENGTH (type) == 4
|| TYPE_LENGTH (type) == 8);
}
void
_initialize_i386nbsd_tdep (void)
{
add_core_fns (&i386nbsd_core_fns);
add_core_fns (&i386nbsd_elfcore_fns);
}
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