128 lines
3.6 KiB
C
128 lines
3.6 KiB
C
/* BFD support for AArch64.
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Copyright (C) 2009-2018 Free Software Foundation, Inc.
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Contributed by ARM Ltd.
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; see the file COPYING3. If not,
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see <http://www.gnu.org/licenses/>. */
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#include "sysdep.h"
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#include "bfd.h"
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#include "libbfd.h"
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#include "libiberty.h"
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/* This routine is provided two arch_infos and works out which Aarch64
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machine which would be compatible with both and returns a pointer
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to its info structure. */
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static const bfd_arch_info_type *
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compatible (const bfd_arch_info_type * a, const bfd_arch_info_type * b)
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{
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/* If a & b are for different architecture we can do nothing. */
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if (a->arch != b->arch)
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return NULL;
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/* If a & b are for the same machine then all is well. */
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if (a->mach == b->mach)
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return a;
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/* Don't allow mixing ilp32 with lp64. */
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if ((a->mach & bfd_mach_aarch64_ilp32) != (b->mach & bfd_mach_aarch64_ilp32))
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return NULL;
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/* Otherwise if either a or b is the 'default' machine
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then it can be polymorphed into the other. */
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if (a->the_default)
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return b;
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if (b->the_default)
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return a;
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/* So far all newer cores are
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supersets of previous cores. */
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if (a->mach < b->mach)
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return b;
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else if (a->mach > b->mach)
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return a;
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/* Never reached! */
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return NULL;
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}
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static struct
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{
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unsigned int mach;
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char *name;
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}
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processors[] =
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{
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/* These two are example CPUs supported in GCC, once we have real
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CPUs they will be removed. */
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{ bfd_mach_aarch64, "example-1" },
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{ bfd_mach_aarch64, "example-2" }
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};
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static bfd_boolean
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scan (const struct bfd_arch_info *info, const char *string)
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{
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int i;
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/* First test for an exact match. */
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if (strcasecmp (string, info->printable_name) == 0)
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return TRUE;
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/* Next check for a processor name instead of an Architecture name. */
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for (i = sizeof (processors) / sizeof (processors[0]); i--;)
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{
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if (strcasecmp (string, processors[i].name) == 0)
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break;
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}
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if (i != -1 && info->mach == processors[i].mach)
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return TRUE;
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/* Finally check for the default architecture. */
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if (strcasecmp (string, "aarch64") == 0)
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return info->the_default;
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return FALSE;
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}
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#define N(NUMBER, PRINT, WORDSIZE, DEFAULT, NEXT) \
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{ WORDSIZE, WORDSIZE, 8, bfd_arch_aarch64, NUMBER, \
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"aarch64", PRINT, 4, DEFAULT, compatible, scan, \
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bfd_arch_default_fill, NEXT }
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static const bfd_arch_info_type bfd_aarch64_arch_ilp32 =
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N (bfd_mach_aarch64_ilp32, "aarch64:ilp32", 32, FALSE, NULL);
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const bfd_arch_info_type bfd_aarch64_arch =
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N (0, "aarch64", 64, TRUE, &bfd_aarch64_arch_ilp32);
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bfd_boolean
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bfd_is_aarch64_special_symbol_name (const char *name, int type)
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{
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if (!name || name[0] != '$')
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return FALSE;
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if (name[1] == 'x' || name[1] == 'd')
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type &= BFD_AARCH64_SPECIAL_SYM_TYPE_MAP;
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else if (name[1] == 'm' || name[1] == 'f' || name[1] == 'p')
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type &= BFD_AARCH64_SPECIAL_SYM_TYPE_TAG;
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else
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return FALSE;
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return (type != 0 && (name[2] == 0 || name[2] == '.'));
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}
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