| 1 | /* BFD library support routines for the AVR architecture.
|
|---|
| 2 | Copyright 1999, 2000, 2002 Free Software Foundation, Inc.
|
|---|
| 3 | Contributed by Denis Chertykov <denisc@overta.ru>
|
|---|
| 4 |
|
|---|
| 5 | This file is part of BFD, the Binary File Descriptor library.
|
|---|
| 6 |
|
|---|
| 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.
|
|---|
| 11 |
|
|---|
| 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.
|
|---|
| 16 |
|
|---|
| 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. */
|
|---|
| 20 |
|
|---|
| 21 | #include "bfd.h"
|
|---|
| 22 | #include "sysdep.h"
|
|---|
| 23 | #include "libbfd.h"
|
|---|
| 24 |
|
|---|
| 25 | static const bfd_arch_info_type *compatible
|
|---|
| 26 | PARAMS ((const bfd_arch_info_type *, const bfd_arch_info_type *));
|
|---|
| 27 |
|
|---|
| 28 | #define N(addr_bits, machine, print, default, next) \
|
|---|
| 29 | { \
|
|---|
| 30 | 8, /* 8 bits in a word */ \
|
|---|
| 31 | addr_bits, /* bits in an address */ \
|
|---|
| 32 | 8, /* 8 bits in a byte */ \
|
|---|
| 33 | bfd_arch_avr, \
|
|---|
| 34 | machine, /* machine */ \
|
|---|
| 35 | "avr", /* arch_name */ \
|
|---|
| 36 | print, /* printable name */ \
|
|---|
| 37 | 1, /* section align power */ \
|
|---|
| 38 | default, /* the default machine */ \
|
|---|
| 39 | compatible, \
|
|---|
| 40 | bfd_default_scan, \
|
|---|
| 41 | next \
|
|---|
| 42 | }
|
|---|
| 43 |
|
|---|
| 44 | static const bfd_arch_info_type arch_info_struct[] =
|
|---|
| 45 | {
|
|---|
| 46 | /* AT90S1200, ATtiny1x, ATtiny28 */
|
|---|
| 47 | N (16, bfd_mach_avr1, "avr:1", FALSE, & arch_info_struct[1]),
|
|---|
| 48 |
|
|---|
| 49 | /* AT90S2xxx, AT90S4xxx, AT90S8xxx, ATtiny22 */
|
|---|
| 50 | N (16, bfd_mach_avr2, "avr:2", FALSE, & arch_info_struct[2]),
|
|---|
| 51 |
|
|---|
| 52 | /* ATmega103, ATmega603 */
|
|---|
| 53 | N (22, bfd_mach_avr3, "avr:3", FALSE, & arch_info_struct[3]),
|
|---|
| 54 |
|
|---|
| 55 | /* ATmega83, ATmega85 */
|
|---|
| 56 | N (16, bfd_mach_avr4, "avr:4", FALSE, & arch_info_struct[4]),
|
|---|
| 57 |
|
|---|
| 58 | /* ATmega161, ATmega163, ATmega32, AT94K */
|
|---|
| 59 | N (22, bfd_mach_avr5, "avr:5", FALSE, NULL)
|
|---|
| 60 | };
|
|---|
| 61 |
|
|---|
| 62 | const bfd_arch_info_type bfd_avr_arch =
|
|---|
| 63 | N (16, bfd_mach_avr2, "avr", TRUE, & arch_info_struct[0]);
|
|---|
| 64 |
|
|---|
| 65 | /* This routine is provided two arch_infos and works out which AVR
|
|---|
| 66 | machine which would be compatible with both and returns a pointer
|
|---|
| 67 | to its info structure. */
|
|---|
| 68 |
|
|---|
| 69 | static const bfd_arch_info_type *
|
|---|
| 70 | compatible (a,b)
|
|---|
| 71 | const bfd_arch_info_type * a;
|
|---|
| 72 | const bfd_arch_info_type * b;
|
|---|
| 73 | {
|
|---|
| 74 | /* If a & b are for different architectures we can do nothing. */
|
|---|
| 75 | if (a->arch != b->arch)
|
|---|
| 76 | return NULL;
|
|---|
| 77 |
|
|---|
| 78 | /* Special case for ATmega[16]03 (avr:3) and ATmega83 (avr:4). */
|
|---|
| 79 | if ((a->mach == bfd_mach_avr3 && b->mach == bfd_mach_avr4)
|
|---|
| 80 | || (a->mach == bfd_mach_avr4 && b->mach == bfd_mach_avr3))
|
|---|
| 81 | return NULL;
|
|---|
| 82 |
|
|---|
| 83 | /* So far all newer AVR architecture cores are supersets of previous
|
|---|
| 84 | cores. */
|
|---|
| 85 | if (a->mach <= b->mach)
|
|---|
| 86 | return b;
|
|---|
| 87 |
|
|---|
| 88 | if (a->mach >= b->mach)
|
|---|
| 89 | return a;
|
|---|
| 90 |
|
|---|
| 91 | /* Never reached! */
|
|---|
| 92 | return NULL;
|
|---|
| 93 | }
|
|---|
