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/* BFD library support routines for the AVR architecture.
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/* BFD library support routines for the AVR architecture.
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Copyright 1999, 2000, 2002, 2006, 2007 Free Software Foundation, Inc.
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Copyright 1999, 2000, 2002, 2005, 2006, 2007, 2008
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Free Software Foundation, Inc.
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Contributed by Denis Chertykov <denisc@overta.ru>
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Contributed by Denis Chertykov <denisc@overta.ru>
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This file is part of BFD, the Binary File Descriptor library.
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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This program is free software; you can redistribute it and/or modify
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{
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{
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/* If a & b are for different architectures we can do nothing. */
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/* If a & b are for different architectures we can do nothing. */
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if (a->arch != b->arch)
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if (a->arch != b->arch)
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return NULL;
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return NULL;
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if (a->mach == b->mach)
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return a;
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/* avr-6 is compatible only with itself as its call convention is not
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compatible with other avr (the mcu saves the return address on 3 bytes
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instead of 2). */
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if (a->mach == bfd_mach_avr6 || b->mach == bfd_mach_avr6)
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return NULL;
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if (a->mach < bfd_mach_avr6 && b->mach < bfd_mach_avr6)
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{
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/* Special case for ATmega[16]03 (avr:3) and ATmega83 (avr:4). */
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/* Special case for ATmega[16]03 (avr:3) and ATmega83 (avr:4). */
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if ((a->mach == bfd_mach_avr3 && b->mach == bfd_mach_avr4)
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if ((a->mach == bfd_mach_avr3 && b->mach == bfd_mach_avr4)
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|| (a->mach == bfd_mach_avr4 && b->mach == bfd_mach_avr3))
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|| (a->mach == bfd_mach_avr4 && b->mach == bfd_mach_avr3))
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return NULL;
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return NULL;
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/* So far all newer AVR architecture cores are supersets of previous
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cores. */
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if (a->mach <= b->mach)
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if (a->mach <= b->mach)
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return b;
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return b;
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if (a->mach >= b->mach)
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if (a->mach >= b->mach)
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return a;
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return a;
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}
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if (a->mach == bfd_mach_avr2 && b->mach == bfd_mach_avr25)
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return a;
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if (a->mach == bfd_mach_avr25 && b->mach == bfd_mach_avr2)
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return b;
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if (a->mach == bfd_mach_avr3 && b->mach == bfd_mach_avr31)
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return a;
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if (a->mach == bfd_mach_avr31 && b->mach == bfd_mach_avr3)
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return b;
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if (a->mach == bfd_mach_avr3 && b->mach == bfd_mach_avr35)
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return a;
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if (a->mach == bfd_mach_avr35 && b->mach == bfd_mach_avr3)
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return b;
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if (a->mach == bfd_mach_avr5 && b->mach == bfd_mach_avr51)
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return a;
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if (a->mach == bfd_mach_avr51 && b->mach == bfd_mach_avr5)
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return b;
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/* Never reached! */
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return NULL;
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return NULL;
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}
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}
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#define N(addr_bits, machine, print, default, next) \
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#define N(addr_bits, machine, print, default, next) \
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{ \
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{ \
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next \
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next \
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}
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}
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static const bfd_arch_info_type arch_info_struct[] =
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static const bfd_arch_info_type arch_info_struct[] =
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{
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{
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/* AT90S1200, ATtiny1x, ATtiny28. */
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/* Assembler only. */
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N (16, bfd_mach_avr1, "avr:1", FALSE, & arch_info_struct[1]),
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N (16, bfd_mach_avr1, "avr:1", FALSE, & arch_info_struct[1]),
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/* AT90S2xxx, AT90S4xxx, AT90S8xxx, ATtiny22. */
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/* Classic, <= 8K. */
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N (16, bfd_mach_avr2, "avr:2", FALSE, & arch_info_struct[2]),
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N (16, bfd_mach_avr2, "avr:2", FALSE, & arch_info_struct[2]),
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/* ATmega103, ATmega603. */
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/* Classic + MOVW, <= 8K. */
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N (22, bfd_mach_avr3, "avr:3", FALSE, & arch_info_struct[3]),
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N (16, bfd_mach_avr25, "avr:25", FALSE, & arch_info_struct[3]),
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/* Classic, > 8K, <= 64K. */
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/* TODO: addr_bits should be 16, but set to 22 for some following
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version of GCC (from 4.3) for backward compatibility. */
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N (22, bfd_mach_avr3, "avr:3", FALSE, & arch_info_struct[4]),
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/* Classic, == 128K. */
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N (22, bfd_mach_avr31, "avr:31", FALSE, & arch_info_struct[5]),
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/* Classic + MOVW + JMP/CALL, > 8K, <= 64K. */
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N (16, bfd_mach_avr35, "avr:35", FALSE, & arch_info_struct[6]),
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/* Enhanced, <= 8K. */
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N (16, bfd_mach_avr4, "avr:4", FALSE, & arch_info_struct[7]),
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/* ATmega83, ATmega85. */
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/* Enhanced, > 8K, <= 64K. */
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N (16, bfd_mach_avr4, "avr:4", FALSE, & arch_info_struct[4]),
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/* TODO: addr_bits should be 16, but set to 22 for some following
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version of GCC (from 4.3) for backward compatibility. */
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N (22, bfd_mach_avr5, "avr:5", FALSE, & arch_info_struct[8]),
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/* ATmega161, ATmega163, ATmega32, AT94K. */
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/* Enhanced, == 128K. */
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N (22, bfd_mach_avr5, "avr:5", FALSE, & arch_info_struct[5]),
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N (22, bfd_mach_avr51, "avr:51", FALSE, & arch_info_struct[9]),
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/* ATmega256x. */
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/* 3-Byte PC. */
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N (22, bfd_mach_avr6, "avr:6", FALSE, NULL)
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N (22, bfd_mach_avr6, "avr:6", FALSE, NULL)
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};
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};
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const bfd_arch_info_type bfd_avr_arch =
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const bfd_arch_info_type bfd_avr_arch =
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N (16, bfd_mach_avr2, "avr", TRUE, & arch_info_struct[0]);
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N (16, bfd_mach_avr2, "avr", TRUE, & arch_info_struct[0]);
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