128 lines
3.6 KiB
C
128 lines
3.6 KiB
C
/* BFD support for AArch64.
|
|
Copyright (C) 2009-2017 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. */
|
|
|
|
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;
|
|
|
|
/* Don't allow mixing ilp32 with lp64. */
|
|
if ((a->mach & bfd_mach_aarch64_ilp32) != (b->mach & bfd_mach_aarch64_ilp32))
|
|
return NULL;
|
|
|
|
/* 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] == '.'));
|
|
}
|