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/* BFD library support routines for the AVR architecture.
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Copyright (C) 1999, 2000 Free Software Foundation, Inc.
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Contributed by Denis Chertykov <denisc@overta.ru>
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This file is part of BFD, the Binary File Descriptor library.
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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, Boston, MA 02111-1307, USA. */
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#include "bfd.h"
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#include "sysdep.h"
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#include "libbfd.h"
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static const bfd_arch_info_type *compatible
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PARAMS ((const bfd_arch_info_type *, const bfd_arch_info_type *));
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#define N(addr_bits, machine, print, default, next) \
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{ \
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8, /* 8 bits in a word */ \
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addr_bits, /* bits in an address */ \
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8, /* 8 bits in a byte */ \
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bfd_arch_avr, \
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machine, /* machine */ \
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"avr", /* arch_name */ \
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print, /* printable name */ \
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1, /* section align power */ \
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default, /* the default machine */ \
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compatible, \
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bfd_default_scan, \
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next \
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}
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static const bfd_arch_info_type arch_info_struct[] =
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{
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/* AT90S1200 */
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N (16, bfd_mach_avr1, "avr:1", false, & arch_info_struct[1]),
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/* AT90S2xxx, AT90S4xxx, AT90S81xx, ATtiny22 */
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N (16, bfd_mach_avr2, "avr:2", false, & arch_info_struct[2]),
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/* ATmega103, ATmega603 */
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N (22, bfd_mach_avr3, "avr:3", false, & arch_info_struct[3]),
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/* ATmega161 */
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N (16, bfd_mach_avr4, "avr:4", false, NULL)
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};
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const bfd_arch_info_type bfd_avr_arch =
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N (16, bfd_mach_avr2, "avr", true, & arch_info_struct[0]);
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/* This routine is provided two arch_infos and works out which AVR
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machine which would be compatible with both and returns a pointer
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to its info structure. */
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static const bfd_arch_info_type *
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compatible (a,b)
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const bfd_arch_info_type * a;
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const bfd_arch_info_type * b;
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{
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/* If a & b are for different architectures we can do nothing. */
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if (a->arch != b->arch)
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return NULL;
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/* Special case for ATmega[16]03 (avr:3) and ATmega161 (avr:4). */
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if ((a->mach == 3 && b->mach == 4)
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|| (a->mach == 4 && b->mach == 3))
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return NULL;
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/* So far all newer AVR architecture cores are supersets of previous
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cores. */
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if (a->mach <= b->mach)
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return b;
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/* Never reached! */
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return NULL;
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}
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