/* BFD support for AArch64. Copyright (C) 2009-2023 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" } }; 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] == '.')); }