Mercurial > hg > CbC > CbC_gcc

comparison gcc/config/mips/driver-native.c @ 0:a06113de4d67

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
first commit
author kent <kent@cr.ie.u-ryukyu.ac.jp>
date Fri, 17 Jul 2009 14:47:48 +0900
parents
children 04ced10e8804
comparison
equal deleted inserted replaced
-1:000000000000 0:a06113de4d67
1 /* Subroutines for the gcc driver.
2 Copyright (C) 2008 Free Software Foundation, Inc.
3
4 This file is part of GCC.
5
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)
9 any later version.
10
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.
15
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/>. */
19
20 #include "config.h"
21 #include "system.h"
22 #include "coretypes.h"
23 #include "tm.h"
24
25 /* This will be called by the spec parser in gcc.c when it sees
26 a %:local_cpu_detect(args) construct. Currently it will be called
27 with either "arch" or "tune" as argument depending on if -march=native
28 or -mtune=native is to be substituted.
29
30 It returns a string containing new command line parameters to be
31 put at the place of the above two options, depending on what CPU
32 this is executed. E.g. "-march=loongson2f" on a Loongson 2F for
33 -march=native. If the routine can't detect a known processor,
34 the -march or -mtune option is discarded.
35
36 ARGC and ARGV are set depending on the actual arguments given
37 in the spec. */
38 const char *
39 host_detect_local_cpu (int argc, const char **argv)
40 {
41 const char *cpu = NULL;
42 char buf[128];
43 FILE *f;
44 bool arch;
45
46 if (argc < 1)
47 return NULL;
48
49 arch = strcmp (argv[0], "arch") == 0;
50 if (!arch && strcmp (argv[0], "tune"))
51 return NULL;
52
53 f = fopen ("/proc/cpuinfo", "r");
54 if (f == NULL)
55 return NULL;
56
57 while (fgets (buf, sizeof (buf), f) != NULL)
58 if (strncmp (buf, "cpu model", sizeof ("cpu model") - 1) == 0)
59 {
60 if (strstr (buf, "Godson2 V0.2") != NULL
61 || strstr (buf, "Loongson-2 V0.2") != NULL)
62 cpu = "loongson2e";
63 else if (strstr (buf, "Godson2 V0.3") != NULL
64 || strstr (buf, "Loongson-2 V0.3") != NULL)
65 cpu = "loongson2f";
66 else if (strstr (buf, "SiByte SB1") != NULL)
67 cpu = "sb1";
68 else if (strstr (buf, "R5000") != NULL)
69 cpu = "r5000";
70 else if (strstr (buf, "Octeon") != NULL)
71 cpu = "octeon";
72 break;
73 }
74
75 fclose (f);
76
77 if (cpu == NULL)
78 return NULL;
79
80 return concat ("-m", argv[0], "=", cpu, NULL);
81 }