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author | Alan Modra <amodra@gmail.com> | 2000-03-27 08:39:14 +0000 |
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committer | Alan Modra <amodra@gmail.com> | 2000-03-27 08:39:14 +0000 |
commit | adde6300e0ceb74fbe8df6721fd948063c2080cd (patch) | |
tree | 50340425b80fd12f0a7efd11ec9b6a1e90992946 /bfd/cpu-avr.c | |
parent | e7d0728ac1f3df93167fcad12c53be92ea98dda5 (diff) | |
download | binutils-adde6300e0ceb74fbe8df6721fd948063c2080cd.tar.gz binutils-adde6300e0ceb74fbe8df6721fd948063c2080cd.tar.bz2 binutils-adde6300e0ceb74fbe8df6721fd948063c2080cd.zip |
ATMEL AVR microcontroller support.
Diffstat (limited to 'bfd/cpu-avr.c')
-rw-r--r-- | bfd/cpu-avr.c | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/bfd/cpu-avr.c b/bfd/cpu-avr.c new file mode 100644 index 00000000000..637b13fb3fd --- /dev/null +++ b/bfd/cpu-avr.c @@ -0,0 +1,89 @@ +/* BFD library support routines for the AVR architecture. + Copyright (C) 1999, 2000 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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +#include "bfd.h" +#include "sysdep.h" +#include "libbfd.h" + + +static const bfd_arch_info_type *compatible + PARAMS ((const bfd_arch_info_type *, const bfd_arch_info_type *)); + + +#define N(addr_bits, machine, print, default, next) \ +{ \ + 8, /* 8 bits in a word */ \ + addr_bits, /* bits in an address */ \ + 8, /* 8 bits in a byte */ \ + bfd_arch_avr, \ + machine, /* machine */ \ + "avr", /* arch_name */ \ + print, /* printable name */ \ + 1, /* section align power */ \ + default, /* the default machine */ \ + compatible, \ + bfd_default_scan, \ + next \ +} + +static const bfd_arch_info_type arch_info_struct[] = +{ + /* AT90S1200 */ + N (16, bfd_mach_avr1, "avr:1", false, & arch_info_struct[1]), + + /* AT90S2xxx, AT90S4xxx, AT90S81xx, ATtiny22 */ + N (16, bfd_mach_avr2, "avr:2", false, & arch_info_struct[2]), + + /* ATmega103, ATmega603 */ + N (22, bfd_mach_avr3, "avr:3", false, & arch_info_struct[3]), + + /* ATmega161 */ + N (16, bfd_mach_avr4, "avr:4", false, NULL) +}; + +const bfd_arch_info_type bfd_avr_arch = + N (16, bfd_mach_avr2, "avr", true, & arch_info_struct[0]); + +/* 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 (a,b) + 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; + + /* Special case for ATmega[16]03 (avr:3) and ATmega161 (avr:4). */ + if ((a->mach == 3 && b->mach == 4) + || (a->mach == 4 && b->mach == 3)) + return NULL; + + /* So far all newer AVR architecture cores are supersets of previous + cores. */ + if (a->mach <= b->mach) + return b; + + /* Never reached! */ + return NULL; +} |