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https://opencores.org/ocsvn/openrisc_2011-10-31/openrisc_2011-10-31/trunk
Subversion Repositories openrisc_2011-10-31
[/] [openrisc/] [trunk/] [gnu-src/] [gdb-6.8/] [bfd/] [cpu-avr.c] - Rev 462
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/* BFD library support routines for the AVR architecture. Copyright 1999, 2000, 2002, 2005, 2006, 2007, 2008 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, /* 8 bits in a word. */ \ addr_bits, /* bits in an address. */ \ 8, /* 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, \ next \ } 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, NULL) }; const bfd_arch_info_type bfd_avr_arch = N (16, bfd_mach_avr2, "avr", TRUE, & arch_info_struct[0]);
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