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

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author kent <kent@cr.ie.u-ryukyu.ac.jp>
date Fri, 17 Jul 2009 14:47:48 +0900
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children 04ced10e8804
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-1:000000000000 0:a06113de4d67
1 /* Subroutines for the gcc driver.
2 Copyright (C) 2009 Free Software Foundation, Inc.
3 Contributed by Arthur Loiret <aloiret@debian.org>
4
5 This file is part of GCC.
6
7 GCC is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3, or (at your option)
10 any later version.
11
12 GCC is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING3. If not see
19 <http://www.gnu.org/licenses/>. */
20
21 #include "config.h"
22 #include "system.h"
23 #include "coretypes.h"
24 #include "tm.h"
25
26 /* This will be called by the spec parser in gcc.c when it sees
27 a %:local_cpu_detect(args) construct. Currently it will be called
28 with either "cpu" or "tune" as argument depending on if -mcpu=native
29 or -mtune=native is to be substituted.
30
31 It returns a string containing new command line parameters to be
32 put at the place of the above two options, depending on what CPU
33 this is executed. E.g. "-mcpu=ev6" on an Alpha 21264 for
34 -mcpu=native. If the routine can't detect a known processor,
35 the -mcpu or -mtune option is discarded.
36
37 ARGC and ARGV are set depending on the actual arguments given
38 in the spec. */
39 const char *
40 host_detect_local_cpu (int argc, const char **argv)
41 {
42 const char *cpu = NULL;
43 char buf[128];
44 FILE *f;
45
46 static const struct cpu_names {
47 const char *const name;
48 const char *const cpu;
49 } cpu_names[] = {
50 { "EV79", "ev67" },
51 { "EV7", "ev67" },
52 { "EV69", "ev67" },
53 { "EV68CX", "ev67" },
54 { "EV68CB", "ev67" },
55 { "EV68AL", "ev67" },
56 { "EV67", "ev67" },
57 { "EV6", "ev6" },
58 { "PCA57", "pca56" },
59 { "PCA56", "pca56" },
60 { "EV56", "ev56" },
61 { "EV5", "ev5" },
62 { "LCA45", "ev45" },
63 { "EV45", "ev45" },
64 { "LCA4", "ev4" },
65 { "EV4", "ev4" },
66 /* { "EV3", "ev3" }, */
67 { 0, 0 }
68 };
69
70 int i;
71
72 if (argc < 1)
73 return NULL;
74
75 if (strcmp (argv[0], "cpu") && strcmp (argv[0], "tune"))
76 return NULL;
77
78 f = fopen ("/proc/cpuinfo", "r");
79 if (f == NULL)
80 return NULL;
81
82 while (fgets (buf, sizeof (buf), f) != NULL)
83 if (strncmp (buf, "cpu model", sizeof ("cpu model") - 1) == 0)
84 {
85 for (i = 0; cpu_names [i].name; i++)
86 if (strstr (buf, cpu_names [i].name) != NULL)
87 {
88 cpu = cpu_names [i].cpu;
89 break;
90 }
91 break;
92 }
93
94 fclose (f);
95
96 if (cpu == NULL)
97 return NULL;
98
99 return concat ("-m", argv[0], "=", cpu, NULL);
100 }