1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
|
/* Subroutines for the gcc driver.
Copyright (C) 2009 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"
/* 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)
{
const char *cpu = NULL;
char buf[128];
FILE *f;
static const struct cpu_names {
const char *const name;
const char *const cpu;
} cpu_names[] = {
{ "EV79", "ev67" },
{ "EV7", "ev67" },
{ "EV69", "ev67" },
{ "EV68CX", "ev67" },
{ "EV68CB", "ev67" },
{ "EV68AL", "ev67" },
{ "EV67", "ev67" },
{ "EV6", "ev6" },
{ "PCA57", "pca56" },
{ "PCA56", "pca56" },
{ "EV56", "ev56" },
{ "EV5", "ev5" },
{ "LCA45", "ev45" },
{ "EV45", "ev45" },
{ "LCA4", "ev4" },
{ "EV4", "ev4" },
/* { "EV3", "ev3" }, */
{ 0, 0 }
};
int i;
if (argc < 1)
return NULL;
if (strcmp (argv[0], "cpu") && 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)
{
for (i = 0; cpu_names [i].name; i++)
if (strstr (buf, cpu_names [i].name) != NULL)
{
cpu = cpu_names [i].cpu;
break;
}
break;
}
fclose (f);
if (cpu == NULL)
return NULL;
return concat ("-m", argv[0], "=", cpu, NULL);
}
|
