/* BFD library support routines for the AVR architecture. Copyright 1999, 2000, 2002 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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, 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 == bfd_mach_avr3 && b->mach == bfd_mach_avr4) || (a->mach == bfd_mach_avr4 && b->mach == bfd_mach_avr3)) 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; }