1/* BFD library support routines for the AVR architecture. 2 Copyright 1999, 2000, 2002, 2006, 2007 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 3 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, 20 MA 02110-1301, USA. */ 21 22#include "sysdep.h" 23#include "bfd.h" 24#include "libbfd.h" 25 26/* This routine is provided two arch_infos and works out which AVR 27 machine which would be compatible with both and returns a pointer 28 to its info structure. */ 29 30static const bfd_arch_info_type * 31compatible (const bfd_arch_info_type * a, 32 const bfd_arch_info_type * b) 33{ 34 /* If a & b are for different architectures we can do nothing. */ 35 if (a->arch != b->arch) 36 return NULL; 37 38 /* Special case for ATmega[16]03 (avr:3) and ATmega83 (avr:4). */ 39 if ((a->mach == bfd_mach_avr3 && b->mach == bfd_mach_avr4) 40 || (a->mach == bfd_mach_avr4 && b->mach == bfd_mach_avr3)) 41 return NULL; 42 43 /* So far all newer AVR architecture cores are supersets of previous 44 cores. */ 45 if (a->mach <= b->mach) 46 return b; 47 48 if (a->mach >= b->mach) 49 return a; 50 51 /* Never reached! */ 52 return NULL; 53} 54 55#define N(addr_bits, machine, print, default, next) \ 56{ \ 57 8, /* 8 bits in a word. */ \ 58 addr_bits, /* bits in an address. */ \ 59 8, /* 8 bits in a byte. */ \ 60 bfd_arch_avr, \ 61 machine, /* Machine number. */ \ 62 "avr", /* Architecture name. */ \ 63 print, /* Printable name. */ \ 64 1, /* Section align power. */ \ 65 default, /* Is this the default ? */ \ 66 compatible, \ 67 bfd_default_scan, \ 68 next \ 69} 70 71static const bfd_arch_info_type arch_info_struct[] = 72{ 73 /* AT90S1200, ATtiny1x, ATtiny28. */ 74 N (16, bfd_mach_avr1, "avr:1", FALSE, & arch_info_struct[1]), 75 76 /* AT90S2xxx, AT90S4xxx, AT90S8xxx, ATtiny22. */ 77 N (16, bfd_mach_avr2, "avr:2", FALSE, & arch_info_struct[2]), 78 79 /* ATmega103, ATmega603. */ 80 N (22, bfd_mach_avr3, "avr:3", FALSE, & arch_info_struct[3]), 81 82 /* ATmega83, ATmega85. */ 83 N (16, bfd_mach_avr4, "avr:4", FALSE, & arch_info_struct[4]), 84 85 /* ATmega161, ATmega163, ATmega32, AT94K. */ 86 N (22, bfd_mach_avr5, "avr:5", FALSE, & arch_info_struct[5]), 87 88 /* ATmega256x. */ 89 N (22, bfd_mach_avr6, "avr:6", FALSE, NULL) 90}; 91 92const bfd_arch_info_type bfd_avr_arch = 93 N (16, bfd_mach_avr2, "avr", TRUE, & arch_info_struct[0]); 94