| /* Subroutines for the gcc driver. |
| Copyright (C) 2009-2022 Free Software Foundation, Inc. |
| Contributed by Arthur Loiret <aloiret@debian.org> |
| |
| This file is part of GCC. |
| |
| GCC 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, or (at your option) |
| any later version. |
| |
| GCC 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 GCC; see the file COPYING3. If not see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #define IN_TARGET_CODE 1 |
| |
| #include "config.h" |
| #include "system.h" |
| #include "coretypes.h" |
| #include "tm.h" |
| |
| /* Chip family type IDs, returned by implver instruction. */ |
| #define IMPLVER_EV4_FAMILY 0 /* LCA/EV4/EV45 */ |
| #define IMPLVER_EV5_FAMILY 1 /* EV5/EV56/PCA56 */ |
| #define IMPLVER_EV6_FAMILY 2 /* EV6 */ |
| #define IMPLVER_EV7_FAMILY 3 /* EV7 */ |
| |
| /* Bit defines for amask instruction. */ |
| #define AMASK_BWX 0x1 /* byte/word extension. */ |
| #define AMASK_FIX 0x2 /* sqrt and f <-> i conversions |
| extension. */ |
| #define AMASK_CIX 0x4 /* count extension. */ |
| #define AMASK_MVI 0x100 /* multimedia extension. */ |
| #define AMASK_PRECISE 0x200 /* Precise arithmetic traps. */ |
| #define AMASK_LOCKPFTCHOK 0x1000 /* Safe to prefetch lock cache |
| block. */ |
| |
| /* This will be called by the spec parser in gcc.cc when it sees |
| a %:local_cpu_detect(args) construct. Currently it will be called |
| with either "cpu" or "tune" as argument depending on if -mcpu=native |
| or -mtune=native is to be substituted. |
| |
| It returns a string containing new command line parameters to be |
| put at the place of the above two options, depending on what CPU |
| this is executed. E.g. "-mcpu=ev6" on an Alpha 21264 for |
| -mcpu=native. If the routine can't detect a known processor, |
| the -mcpu or -mtune option is discarded. |
| |
| ARGC and ARGV are set depending on the actual arguments given |
| in the spec. */ |
| const char * |
| host_detect_local_cpu (int argc, const char **argv) |
| { |
| static const struct cpu_types { |
| long implver; |
| long amask; |
| const char *const cpu; |
| } cpu_types[] = { |
| { IMPLVER_EV7_FAMILY, AMASK_BWX|AMASK_MVI|AMASK_FIX|AMASK_CIX, "ev67" }, |
| { IMPLVER_EV6_FAMILY, AMASK_BWX|AMASK_MVI|AMASK_FIX|AMASK_CIX, "ev67" }, |
| { IMPLVER_EV6_FAMILY, AMASK_BWX|AMASK_MVI|AMASK_FIX, "ev6" }, |
| { IMPLVER_EV5_FAMILY, AMASK_BWX|AMASK_MVI, "pca56" }, |
| { IMPLVER_EV5_FAMILY, AMASK_BWX, "ev56" }, |
| { IMPLVER_EV5_FAMILY, 0, "ev5" }, |
| { IMPLVER_EV4_FAMILY, 0, "ev4" }, |
| { 0, 0, NULL } |
| }; |
| long implver; |
| long amask; |
| const char *cpu; |
| int i; |
| |
| if (argc < 1) |
| return NULL; |
| |
| if (strcmp (argv[0], "cpu") && strcmp (argv[0], "tune")) |
| return NULL; |
| |
| implver = __builtin_alpha_implver (); |
| amask = __builtin_alpha_amask (~0L); |
| cpu = NULL; |
| |
| for (i = 0; cpu_types[i].cpu != NULL; i++) |
| if (implver == cpu_types[i].implver |
| && (~amask & cpu_types[i].amask) == cpu_types[i].amask) |
| { |
| cpu = cpu_types[i].cpu; |
| break; |
| } |
| |
| if (cpu == NULL) |
| return NULL; |
| |
| return concat ("-m", argv[0], "=", cpu, NULL); |
| } |