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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [gcc/] [config/] [alpha/] [driver-alpha.c] - Rev 758
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/* Subroutines for the gcc driver. Copyright (C) 2009, 2011 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" /* 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.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) { 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); }
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