1 /* BFD library support routines for the AVR architecture. 2 Copyright 1999, 2000, 2002, 2006 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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ 20 21 #include "bfd.h" 22 #include "sysdep.h" 23 #include "libbfd.h" 24 25 /* This routine is provided two arch_infos and works out which AVR 26 machine which would be compatible with both and returns a pointer 27 to its info structure. */ 28 29 static const bfd_arch_info_type * 30 compatible (const bfd_arch_info_type * a, 31 const bfd_arch_info_type * b) 32 { 33 /* If a & b are for different architectures we can do nothing. */ 34 if (a->arch != b->arch) 35 return NULL; 36 37 /* Special case for ATmega[16]03 (avr:3) and ATmega83 (avr:4). */ 38 if ((a->mach == bfd_mach_avr3 && b->mach == bfd_mach_avr4) 39 || (a->mach == bfd_mach_avr4 && b->mach == bfd_mach_avr3)) 40 return NULL; 41 42 /* So far all newer AVR architecture cores are supersets of previous 43 cores. */ 44 if (a->mach <= b->mach) 45 return b; 46 47 if (a->mach >= b->mach) 48 return a; 49 50 /* Never reached! */ 51 return NULL; 52 } 53 54 #define N(addr_bits, machine, print, default, next) \ 55 { \ 56 8, /* 8 bits in a word. */ \ 57 addr_bits, /* bits in an address. */ \ 58 8, /* 8 bits in a byte. */ \ 59 bfd_arch_avr, \ 60 machine, /* Machine number. */ \ 61 "avr", /* Architecture name. */ \ 62 print, /* Printable name. */ \ 63 1, /* Section align power. */ \ 64 default, /* Is this the default ? */ \ 65 compatible, \ 66 bfd_default_scan, \ 67 next \ 68 } 69 70 static const bfd_arch_info_type arch_info_struct[] = 71 { 72 /* AT90S1200, ATtiny1x, ATtiny28. */ 73 N (16, bfd_mach_avr1, "avr:1", FALSE, & arch_info_struct[1]), 74 75 /* AT90S2xxx, AT90S4xxx, AT90S8xxx, ATtiny22. */ 76 N (16, bfd_mach_avr2, "avr:2", FALSE, & arch_info_struct[2]), 77 78 /* ATmega103, ATmega603. */ 79 N (22, bfd_mach_avr3, "avr:3", FALSE, & arch_info_struct[3]), 80 81 /* ATmega83, ATmega85. */ 82 N (16, bfd_mach_avr4, "avr:4", FALSE, & arch_info_struct[4]), 83 84 /* ATmega161, ATmega163, ATmega32, AT94K. */ 85 N (22, bfd_mach_avr5, "avr:5", FALSE, NULL) 86 }; 87 88 const bfd_arch_info_type bfd_avr_arch = 89 N (16, bfd_mach_avr2, "avr", TRUE, & arch_info_struct[0]); 90