Mercurial > hg > CbC > CbC_gcc
diff gcc/config/alpha/driver-alpha.c @ 0:a06113de4d67
first commit
author | kent <kent@cr.ie.u-ryukyu.ac.jp> |
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date | Fri, 17 Jul 2009 14:47:48 +0900 |
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children | 04ced10e8804 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/gcc/config/alpha/driver-alpha.c Fri Jul 17 14:47:48 2009 +0900 @@ -0,0 +1,100 @@ +/* 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); +}