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- /* BFD library support routines for the AVR architecture.
- Copyright (C) 1999-2022 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]);
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