| /* BFD library support routines for the AVR architecture. |
| Copyright 1999, 2000 Free Software Foundation, Inc. |
| Contributed by Denis Chertykov <denisc@overta.ru> |
| |
| This file is part of BFD, the Binary File Descriptor library. |
| |
| 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 "bfd.h" |
| #include "sysdep.h" |
| #include "libbfd.h" |
| |
| static const bfd_arch_info_type *compatible |
| PARAMS ((const bfd_arch_info_type *, const bfd_arch_info_type *)); |
| |
| #define N(addr_bits, machine, print, default, next) \ |
| { \ |
| 8, /* 8 bits in a word */ \ |
| addr_bits, /* bits in an address */ \ |
| 8, /* 8 bits in a byte */ \ |
| bfd_arch_avr, \ |
| machine, /* machine */ \ |
| "avr", /* arch_name */ \ |
| print, /* printable name */ \ |
| 1, /* section align power */ \ |
| default, /* the default machine */ \ |
| compatible, \ |
| bfd_default_scan, \ |
| next \ |
| } |
| |
| static const bfd_arch_info_type arch_info_struct[] = |
| { |
| /* AT90S1200, ATtiny1x, ATtiny28 */ |
| N (16, bfd_mach_avr1, "avr:1", false, & arch_info_struct[1]), |
| |
| /* AT90S2xxx, AT90S4xxx, AT90S8xxx, ATtiny22 */ |
| N (16, bfd_mach_avr2, "avr:2", false, & arch_info_struct[2]), |
| |
| /* ATmega103, ATmega603 */ |
| N (22, bfd_mach_avr3, "avr:3", false, & arch_info_struct[3]), |
| |
| /* ATmega83, ATmega85 */ |
| N (16, bfd_mach_avr4, "avr:4", false, & arch_info_struct[4]), |
| |
| /* ATmega161, ATmega163, ATmega32, AT94K */ |
| N (22, bfd_mach_avr5, "avr:5", false, NULL) |
| }; |
| |
| const bfd_arch_info_type bfd_avr_arch = |
| N (16, bfd_mach_avr2, "avr", true, & arch_info_struct[0]); |
| |
| /* This routine is provided two arch_infos and works out which AVR |
| machine which would be compatible with both and returns a pointer |
| to its info structure. */ |
| |
| static const bfd_arch_info_type * |
| compatible (a,b) |
| const bfd_arch_info_type * a; |
| const bfd_arch_info_type * b; |
| { |
| /* If a & b are for different architectures we can do nothing. */ |
| if (a->arch != b->arch) |
| return NULL; |
| |
| /* Special case for ATmega[16]03 (avr:3) and ATmega83 (avr:4). */ |
| if ((a->mach == 3 && b->mach == 4) |
| || (a->mach == 4 && b->mach == 3)) |
| return NULL; |
| |
| /* So far all newer AVR architecture cores are supersets of previous |
| cores. */ |
| if (a->mach <= b->mach) |
| return b; |
| |
| if (a->mach >= b->mach) |
| return a; |
| |
| /* Never reached! */ |
| return NULL; |
| } |