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/* BFD support for AArch64.
Copyright (C) 2009-2024 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"
#include "cpu-aarch64.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 data models. */
if ((a->mach ^ b->mach) & (bfd_mach_aarch64_ilp32 | bfd_mach_aarch64_llp64))
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[] =
{
{ bfd_mach_aarch64, "cortex-a34" },
{ bfd_mach_aarch64, "cortex-a65" },
{ bfd_mach_aarch64, "cortex-a65ae" },
{ bfd_mach_aarch64, "cortex-a76ae" },
{ bfd_mach_aarch64, "cortex-a77" },
{ bfd_mach_aarch64, "cortex-a720" },
{ bfd_mach_aarch64, "cortex-x3" },
{ bfd_mach_aarch64, "cortex-x4" },
};
static bool
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;
/* If there is a prefix of "aarch64:" then skip it. */
const char * colon;
if ((colon = strchr (string, ':')) != NULL)
{
if (strncasecmp (string, "aarch64", colon - string) != 0)
return false;
string = colon + 1;
}
/* 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;
}
/* Figure out if llp64 is default */
#if DEFAULT_VECTOR == aarch64_pe_le_vec
#define LLP64_DEFAULT true
#define AARCH64_DEFAULT false
#else
#define LLP64_DEFAULT false
#define AARCH64_DEFAULT true
#endif
#define N(NUMBER, PRINT, WORDSIZE, ADDRSIZE, DEFAULT, NEXT) \
{ WORDSIZE, ADDRSIZE, 8, bfd_arch_aarch64, NUMBER, \
"aarch64", PRINT, 4, DEFAULT, compatible, scan, \
bfd_arch_default_fill, NEXT, 0 }
static const bfd_arch_info_type bfd_aarch64_arch_v8_r =
N (bfd_mach_aarch64_8R, "aarch64:armv8-r", 64, 64, false, NULL);
static const bfd_arch_info_type bfd_aarch64_arch_ilp32 =
N (bfd_mach_aarch64_ilp32, "aarch64:ilp32", 32, 32, false,
&bfd_aarch64_arch_v8_r);
static const bfd_arch_info_type bfd_aarch64_arch_llp64 =
N (bfd_mach_aarch64_llp64, "aarch64:llp64", 32, 64, LLP64_DEFAULT,
&bfd_aarch64_arch_ilp32);
const bfd_arch_info_type bfd_aarch64_arch =
N (0, "aarch64", 64, 64, AARCH64_DEFAULT, &bfd_aarch64_arch_llp64);
bool
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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