1 /* BFD library support routines for the AVR architecture.
2 Copyright (C) 1999, 2000 Free Software Foundation, Inc.
3 Contributed by Denis Chertykov <denisc@overta.ru>
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
26 static const bfd_arch_info_type *compatible
27 PARAMS ((const bfd_arch_info_type *, const bfd_arch_info_type *));
30 #define N(addr_bits, machine, print, default, next) \
32 8, /* 8 bits in a word */ \
33 addr_bits, /* bits in an address */ \
34 8, /* 8 bits in a byte */ \
36 machine, /* machine */ \
37 "avr", /* arch_name */ \
38 print, /* printable name */ \
39 1, /* section align power */ \
40 default, /* the default machine */ \
46 static const bfd_arch_info_type arch_info_struct[] =
49 N (16, bfd_mach_avr1, "avr:1", false, & arch_info_struct[1]),
51 /* AT90S2xxx, AT90S4xxx, AT90S81xx, ATtiny22 */
52 N (16, bfd_mach_avr2, "avr:2", false, & arch_info_struct[2]),
54 /* ATmega103, ATmega603 */
55 N (22, bfd_mach_avr3, "avr:3", false, & arch_info_struct[3]),
58 N (16, bfd_mach_avr4, "avr:4", false, NULL)
61 const bfd_arch_info_type bfd_avr_arch =
62 N (16, bfd_mach_avr2, "avr", true, & arch_info_struct[0]);
64 /* This routine is provided two arch_infos and works out which AVR
65 machine which would be compatible with both and returns a pointer
66 to its info structure. */
68 static const bfd_arch_info_type *
70 const bfd_arch_info_type * a;
71 const bfd_arch_info_type * b;
73 /* If a & b are for different architectures we can do nothing. */
74 if (a->arch != b->arch)
77 /* Special case for ATmega[16]03 (avr:3) and ATmega161 (avr:4). */
78 if ((a->mach == 3 && b->mach == 4)
79 || (a->mach == 4 && b->mach == 3))
82 /* So far all newer AVR architecture cores are supersets of previous
84 if (a->mach <= b->mach)