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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [config/] [mips/] [driver-native.c] - Rev 414
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/* Subroutines for the gcc driver. Copyright (C) 2008 Free Software Foundation, Inc. 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 "arch" or "tune" as argument depending on if -march=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. "-march=loongson2f" on a Loongson 2F for -march=native. If the routine can't detect a known processor, the -march 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; bool arch; if (argc < 1) return NULL; arch = strcmp (argv[0], "arch") == 0; if (!arch && 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) { if (strstr (buf, "Godson2 V0.2") != NULL || strstr (buf, "Loongson-2 V0.2") != NULL) cpu = "loongson2e"; else if (strstr (buf, "Godson2 V0.3") != NULL || strstr (buf, "Loongson-2 V0.3") != NULL) cpu = "loongson2f"; else if (strstr (buf, "SiByte SB1") != NULL) cpu = "sb1"; else if (strstr (buf, "R5000") != NULL) cpu = "r5000"; else if (strstr (buf, "Octeon") != NULL) cpu = "octeon"; break; } fclose (f); if (cpu == NULL) return NULL; return concat ("-m", argv[0], "=", cpu, NULL); }
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