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/* BFD support for AArch64.
Copyright (C) 2009-2018 Free Software Foundation, Inc.
Contributed by ARM Ltd.
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; see the file COPYING3. If not,
see <http://www.gnu.org/licenses/>. */
#include "sysdep.h"
#include "bfd.h"
#include "libbfd.h"
#include "libiberty.h"
/* This routine is provided two arch_infos and works out which Aarch64
machine which would be compatible with both and returns a pointer
to its info structure. ABI (ilp32 vs. lp64) and endianness compatibility
are checked in elfNN_aarch64_merge_private_bfd_data. */
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 architecture we can do nothing. */
if (a->arch != b->arch)
return NULL;
/* If a & b are for the same machine then all is well. */
if (a->mach == b->mach)
return a;
/* Otherwise if either a or b is the 'default' machine
then it can be polymorphed into the other. */
if (a->the_default)
return b;
if (b->the_default)
return a;
/* So far all newer cores are
supersets of previous cores. */
if (a->mach < b->mach)
return b;
else if (a->mach > b->mach)
return a;
/* Never reached! */
return NULL;
}
static struct
{
unsigned int mach;
char *name;
}
processors[] =
{
/* These two are example CPUs supported in GCC, once we have real
CPUs they will be removed. */
{ bfd_mach_aarch64, "example-1" },
{ bfd_mach_aarch64, "example-2" }
};
static bfd_boolean
scan (const struct bfd_arch_info *info, const char *string)
{
int i;
/* First test for an exact match. */
if (strcasecmp (string, info->printable_name) == 0)
return TRUE;
/* Next check for a processor name instead of an Architecture name. */
for (i = sizeof (processors) / sizeof (processors[0]); i--;)
{
if (strcasecmp (string, processors[i].name) == 0)
break;
}
if (i != -1 && info->mach == processors[i].mach)
return TRUE;
/* Finally check for the default architecture. */
if (strcasecmp (string, "aarch64") == 0)
return info->the_default;
return FALSE;
}
#define N(NUMBER, PRINT, WORDSIZE, DEFAULT, NEXT) \
{ WORDSIZE, WORDSIZE, 8, bfd_arch_aarch64, NUMBER, \
"aarch64", PRINT, 4, DEFAULT, compatible, scan, \
bfd_arch_default_fill, NEXT }
static const bfd_arch_info_type bfd_aarch64_arch_ilp32 =
N (bfd_mach_aarch64_ilp32, "aarch64:ilp32", 32, FALSE, NULL);
const bfd_arch_info_type bfd_aarch64_arch =
N (0, "aarch64", 64, TRUE, &bfd_aarch64_arch_ilp32);
bfd_boolean
bfd_is_aarch64_special_symbol_name (const char *name, int type)
{
if (!name || name[0] != '$')
return FALSE;
if (name[1] == 'x' || name[1] == 'd')
type &= BFD_AARCH64_SPECIAL_SYM_TYPE_MAP;
else if (name[1] == 'm' || name[1] == 'f' || name[1] == 'p')
type &= BFD_AARCH64_SPECIAL_SYM_TYPE_TAG;
else
return FALSE;
return (type != 0 && (name[2] == 0 || name[2] == '.'));
}
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