| /* BFD library support routines for the AVR architecture. |
| Copyright (C) 1999-2024 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 3 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 "sysdep.h" |
| #include "bfd.h" |
| #include "libbfd.h" |
| |
| /* 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 (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; |
| |
| if (a->mach == b->mach) |
| return a; |
| |
| /* avr-6 is compatible only with itself as its call convention is not |
| compatible with other avr (the mcu saves the return address on 3 bytes |
| instead of 2). */ |
| if (a->mach == bfd_mach_avr6 || b->mach == bfd_mach_avr6) |
| return NULL; |
| |
| if (a->mach < bfd_mach_avr6 && b->mach < bfd_mach_avr6) |
| { |
| /* 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; |
| |
| if (a->mach <= b->mach) |
| return b; |
| |
| if (a->mach >= b->mach) |
| return a; |
| } |
| |
| if (a->mach == bfd_mach_avr2 && b->mach == bfd_mach_avr25) |
| return a; |
| if (a->mach == bfd_mach_avr25 && b->mach == bfd_mach_avr2) |
| return b; |
| |
| if (a->mach == bfd_mach_avr3 && b->mach == bfd_mach_avr31) |
| return a; |
| if (a->mach == bfd_mach_avr31 && b->mach == bfd_mach_avr3) |
| return b; |
| if (a->mach == bfd_mach_avr3 && b->mach == bfd_mach_avr35) |
| return a; |
| if (a->mach == bfd_mach_avr35 && b->mach == bfd_mach_avr3) |
| return b; |
| |
| if (a->mach == bfd_mach_avr5 && b->mach == bfd_mach_avr51) |
| return a; |
| if (a->mach == bfd_mach_avr51 && b->mach == bfd_mach_avr5) |
| return b; |
| |
| return NULL; |
| } |
| |
| #define N(addr_bits, machine, print, default, next) \ |
| { \ |
| 8, /* Bits in a word. */ \ |
| addr_bits, /* Bits in an address. */ \ |
| 8, /* Bits in a byte. */ \ |
| bfd_arch_avr, \ |
| machine, /* Machine number. */ \ |
| "avr", /* Architecture name. */ \ |
| print, /* Printable name. */ \ |
| 1, /* Section align power. */ \ |
| default, /* Is this the default ? */ \ |
| compatible, \ |
| bfd_default_scan, \ |
| bfd_arch_default_fill, \ |
| next, \ |
| 0 /* Maximum offset of a reloc from the start of an insn. */ \ |
| } |
| |
| static const bfd_arch_info_type arch_info_struct[] = |
| { |
| /* Assembler only. */ |
| N (16, bfd_mach_avr1, "avr:1", false, & arch_info_struct[1]), |
| |
| /* Classic, <= 8K. */ |
| N (16, bfd_mach_avr2, "avr:2", false, & arch_info_struct[2]), |
| |
| /* Classic + MOVW, <= 8K. */ |
| N (16, bfd_mach_avr25, "avr:25", false, & arch_info_struct[3]), |
| |
| /* Classic, > 8K, <= 64K. */ |
| /* TODO: addr_bits should be 16, but set to 22 for some following |
| version of GCC (from 4.3) for backward compatibility. */ |
| N (22, bfd_mach_avr3, "avr:3", false, & arch_info_struct[4]), |
| |
| /* Classic, == 128K. */ |
| N (22, bfd_mach_avr31, "avr:31", false, & arch_info_struct[5]), |
| |
| /* Classic + MOVW + JMP/CALL, > 8K, <= 64K. */ |
| N (16, bfd_mach_avr35, "avr:35", false, & arch_info_struct[6]), |
| |
| /* Enhanced, <= 8K. */ |
| N (16, bfd_mach_avr4, "avr:4", false, & arch_info_struct[7]), |
| |
| /* Enhanced, > 8K, <= 64K. */ |
| /* TODO: addr_bits should be 16, but set to 22 for some following |
| version of GCC (from 4.3) for backward compatibility. */ |
| N (22, bfd_mach_avr5, "avr:5", false, & arch_info_struct[8]), |
| |
| /* Enhanced, == 128K. */ |
| N (22, bfd_mach_avr51, "avr:51", false, & arch_info_struct[9]), |
| |
| /* 3-Byte PC. */ |
| N (22, bfd_mach_avr6, "avr:6", false, & arch_info_struct[10]), |
| |
| /* Tiny core (AVR Tiny). */ |
| N (16, bfd_mach_avrtiny, "avr:100", false, & arch_info_struct[11]), |
| |
| /* Xmega 1. */ |
| N (24, bfd_mach_avrxmega1, "avr:101", false, & arch_info_struct[12]), |
| |
| /* Xmega 2. */ |
| N (24, bfd_mach_avrxmega2, "avr:102", false, & arch_info_struct[13]), |
| |
| /* Xmega 3. */ |
| N (24, bfd_mach_avrxmega3, "avr:103", false, & arch_info_struct[14]), |
| |
| /* Xmega 4. */ |
| N (24, bfd_mach_avrxmega4, "avr:104", false, & arch_info_struct[15]), |
| |
| /* Xmega 5. */ |
| N (24, bfd_mach_avrxmega5, "avr:105", false, & arch_info_struct[16]), |
| |
| /* Xmega 6. */ |
| N (24, bfd_mach_avrxmega6, "avr:106", false, & arch_info_struct[17]), |
| |
| /* Xmega 7. */ |
| N (24, bfd_mach_avrxmega7, "avr:107", false, NULL) |
| |
| }; |
| |
| const bfd_arch_info_type bfd_avr_arch = |
| N (16, bfd_mach_avr2, "avr", true, & arch_info_struct[0]); |