1 /* Subroutines for the gcc driver.
2 Copyright (C) 2008, 2011 Free Software Foundation, Inc.
4 This file is part of GCC.
6 GCC is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3, or (at your option)
11 GCC is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GCC; see the file COPYING3. If not see
18 <http://www.gnu.org/licenses/>. */
22 #include "coretypes.h"
29 /* Cf. MIPS R10000 Microprocessor User Guide, Version 2.0, 14.13 Processor
30 Revision Identifier (PRId) Register (15).
32 http://techpubs.sgi.com/library/tpl/cgi-bin/getdoc.cgi/hdwr/bks/SGI_Developer/books/R10K_UM/sgi_html/t5.Ver.2.0.book_279.html */
34 static const struct cpu_types {
38 { C0_IMP_R2000, "r2000" },
39 { C0_IMP_R3000, "r3000" },
40 { C0_IMP_R6000, "r6000" },
41 { C0_IMP_R4000, "r4000" },
42 { C0_IMP_R6000A, "r6000" },
43 { C0_IMP_R10000, "r10000" },
44 { C0_IMP_R12000, "r12000" },
45 { C0_IMP_R14000, "r14000" },
46 { C0_IMP_R8000, "r8000" },
47 { C0_IMP_R4600, "r4600" },
48 { C0_IMP_R4700, "r4600" },
49 { C0_IMP_R4650, "r4650" },
50 { C0_IMP_R5000, "vr5000" },
51 { C0_IMP_RM7000, "rm7000" },
52 { C0_IMP_RM5271, "vr5000" },
57 cputype (inventory_t *inv, void *arg)
60 && inv->inv_class == INV_PROCESSOR
61 && inv->inv_type == INV_CPUCHIP)
64 /* inv_state is the cpu revision number. */
65 int impl = (inv->inv_state & C0_IMPMASK) >> C0_IMPSHIFT;
67 for (i = 0; cpu_types[i].cpu != NULL; i++)
68 if (cpu_types[i].impl == impl)
70 *((const char **) arg) = cpu_types[i].cpu;
78 /* This will be called by the spec parser in gcc.c when it sees
79 a %:local_cpu_detect(args) construct. Currently it will be called
80 with either "arch" or "tune" as argument depending on if -march=native
81 or -mtune=native is to be substituted.
83 It returns a string containing new command line parameters to be
84 put at the place of the above two options, depending on what CPU
85 this is executed. E.g. "-march=loongson2f" on a Loongson 2F for
86 -march=native. If the routine can't detect a known processor,
87 the -march or -mtune option is discarded.
89 ARGC and ARGV are set depending on the actual arguments given
92 host_detect_local_cpu (int argc, const char **argv)
94 const char *cpu = NULL;
104 arch = strcmp (argv[0], "arch") == 0;
105 if (!arch && strcmp (argv[0], "tune"))
109 scaninvent (cputype, &cpu);
111 f = fopen ("/proc/cpuinfo", "r");
115 while (fgets (buf, sizeof (buf), f) != NULL)
116 if (strncmp (buf, "cpu model", sizeof ("cpu model") - 1) == 0)
118 if (strstr (buf, "Godson2 V0.2") != NULL
119 || strstr (buf, "Loongson-2 V0.2") != NULL)
121 else if (strstr (buf, "Godson2 V0.3") != NULL
122 || strstr (buf, "Loongson-2 V0.3") != NULL)
124 else if (strstr (buf, "SiByte SB1") != NULL)
126 else if (strstr (buf, "R5000") != NULL)
128 else if (strstr (buf, "Octeon II") != NULL)
130 else if (strstr (buf, "Octeon") != NULL)
141 return concat ("-m", argv[0], "=", cpu, NULL);