156 lines
4.0 KiB
C
156 lines
4.0 KiB
C
/* Target-dependent code for NetBSD/i386, for GDB.
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Copyright 1988, 1989, 1991, 1992, 1994, 1996, 2000, 2001, 2002
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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 2 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, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include "defs.h"
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#include "gdbtypes.h"
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#include "gdbcore.h"
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#include "regcache.h"
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#include "i387-tdep.h"
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/* Map a GDB register number to an offset in the reg structure. */
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static int regmap[] =
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{
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( 0 * 4), /* %eax */
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( 1 * 4), /* %ecx */
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( 2 * 4), /* %edx */
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( 3 * 4), /* %ebx */
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( 4 * 4), /* %esp */
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( 5 * 4), /* %epb */
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( 6 * 4), /* %esi */
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( 7 * 4), /* %edi */
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( 8 * 4), /* %eip */
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( 9 * 4), /* %eflags */
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(10 * 4), /* %cs */
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(11 * 4), /* %ss */
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(12 * 4), /* %ds */
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(13 * 4), /* %es */
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(14 * 4), /* %fs */
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(15 * 4), /* %gs */
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};
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#define SIZEOF_STRUCT_REG (16 * 4)
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static void
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i386nbsd_supply_reg (char *regs, int regno)
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{
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int i;
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for (i = 0; i <= 15; i++)
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if (regno == i || regno == -1)
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supply_register (i, regs + regmap[i]);
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}
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static void
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fetch_core_registers (char *core_reg_sect, unsigned core_reg_size, int which,
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CORE_ADDR ignore)
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{
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char *regs, *fsave;
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/* We get everything from one section. */
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if (which != 0)
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return;
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if (core_reg_size < (SIZEOF_STRUCT_REG + 108))
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{
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warning ("Wrong size register set in core file.");
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return;
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}
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regs = core_reg_sect;
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fsave = core_reg_sect + SIZEOF_STRUCT_REG;
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/* Integer registers. */
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i386nbsd_supply_reg (regs, -1);
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/* Floating point registers. */
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i387_supply_fsave (fsave);
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}
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static void
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fetch_elfcore_registers (char *core_reg_sect, unsigned core_reg_size, int which,
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CORE_ADDR ignore)
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{
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switch (which)
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{
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case 0: /* Integer registers. */
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if (core_reg_size != SIZEOF_STRUCT_REG)
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warning ("Wrong size register set in core file.");
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else
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i386nbsd_supply_reg (core_reg_sect, -1);
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break;
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case 2: /* Floating point registers. */
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if (core_reg_size != 108)
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warning ("Wrong size FP register set in core file.");
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else
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i387_supply_fsave (core_reg_sect);
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break;
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case 3: /* "Extended" floating point registers. This is gdb-speak
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for SSE/SSE2. */
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if (core_reg_size != 512)
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warning ("Wrong size XMM register set in core file.");
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else
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i387_supply_fxsave (core_reg_sect);
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break;
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default:
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/* Don't know what kind of register request this is; just ignore it. */
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break;
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}
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}
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static struct core_fns i386nbsd_core_fns =
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{
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bfd_target_unknown_flavour, /* core_flavour */
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default_check_format, /* check_format */
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default_core_sniffer, /* core_sniffer */
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fetch_core_registers, /* core_read_registers */
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NULL /* next */
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};
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static struct core_fns i386nbsd_elfcore_fns =
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{
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bfd_target_elf_flavour, /* core_flavour */
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default_check_format, /* check_format */
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default_core_sniffer, /* core_sniffer */
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fetch_elfcore_registers, /* core_read_registers */
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NULL /* next */
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};
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/* FIXME: should be multi-arch'd */
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int
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i386nbsd_aout_use_struct_convention (int gcc_p, struct type *type)
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{
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return !(TYPE_LENGTH (type) == 1
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|| TYPE_LENGTH (type) == 2
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|| TYPE_LENGTH (type) == 4
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|| TYPE_LENGTH (type) == 8);
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}
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void
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_initialize_i386nbsd_tdep (void)
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{
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add_core_fns (&i386nbsd_core_fns);
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add_core_fns (&i386nbsd_elfcore_fns);
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}
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