| /* 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] == '.')); |
| } |