| /* Subroutines for the gcc driver. |
| Copyright (C) 2009 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/>. */ |
| |
| #include "config.h" |
| #include "system.h" |
| #include "coretypes.h" |
| #include "tm.h" |
| |
| /* This will be called by the spec parser in gcc.c 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) |
| { |
| const char *cpu = NULL; |
| char buf[128]; |
| FILE *f; |
| |
| static const struct cpu_names { |
| const char *const name; |
| const char *const cpu; |
| } cpu_names[] = { |
| { "EV79", "ev67" }, |
| { "EV7", "ev67" }, |
| { "EV69", "ev67" }, |
| { "EV68CX", "ev67" }, |
| { "EV68CB", "ev67" }, |
| { "EV68AL", "ev67" }, |
| { "EV67", "ev67" }, |
| { "EV6", "ev6" }, |
| { "PCA57", "pca56" }, |
| { "PCA56", "pca56" }, |
| { "EV56", "ev56" }, |
| { "EV5", "ev5" }, |
| { "LCA45", "ev45" }, |
| { "EV45", "ev45" }, |
| { "LCA4", "ev4" }, |
| { "EV4", "ev4" }, |
| /* { "EV3", "ev3" }, */ |
| { 0, 0 } |
| }; |
| |
| int i; |
| |
| if (argc < 1) |
| return NULL; |
| |
| if (strcmp (argv[0], "cpu") && strcmp (argv[0], "tune")) |
| return NULL; |
| |
| f = fopen ("/proc/cpuinfo", "r"); |
| if (f == NULL) |
| return NULL; |
| |
| while (fgets (buf, sizeof (buf), f) != NULL) |
| if (strncmp (buf, "cpu model", sizeof ("cpu model") - 1) == 0) |
| { |
| for (i = 0; cpu_names [i].name; i++) |
| if (strstr (buf, cpu_names [i].name) != NULL) |
| { |
| cpu = cpu_names [i].cpu; |
| break; |
| } |
| break; |
| } |
| |
| fclose (f); |
| |
| if (cpu == NULL) |
| return NULL; |
| |
| return concat ("-m", argv[0], "=", cpu, NULL); |
| } |