mirror of
https://github.com/darlinghq/darling-gdb.git
synced 2024-11-28 14:30:48 +00:00
140 lines
4.5 KiB
C
140 lines
4.5 KiB
C
/* BFD library support routines for the AVR architecture.
|
|
Copyright 1999, 2000, 2002, 2006, 2007 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]);
|