w32tex
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pixman-mips.c
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1 /*
2  * Copyright © 2000 SuSE, Inc.
3  * Copyright © 2007 Red Hat, Inc.
4  *
5  * Permission to use, copy, modify, distribute, and sell this software and its
6  * documentation for any purpose is hereby granted without fee, provided that
7  * the above copyright notice appear in all copies and that both that
8  * copyright notice and this permission notice appear in supporting
9  * documentation, and that the name of SuSE not be used in advertising or
10  * publicity pertaining to distribution of the software without specific,
11  * written prior permission. SuSE makes no representations about the
12  * suitability of this software for any purpose. It is provided "as is"
13  * without express or implied warranty.
14  *
15  * SuSE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL SuSE
17  * BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
18  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
19  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
20  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
21  */
22 #ifdef HAVE_CONFIG_H
23 #include <config.h>
24 #endif
25 
26 #include "pixman-private.h"
27 
28 #if defined(USE_MIPS_DSPR2) || defined(USE_LOONGSON_MMI)
29 
30 #include <string.h>
31 #include <stdlib.h>
32 
33 static pixman_bool_t
34 have_feature (const char *search_string)
35 {
36 #if defined (__linux__) /* linux ELF */
37  /* Simple detection of MIPS features at runtime for Linux.
38  * It is based on /proc/cpuinfo, which reveals hardware configuration
39  * to user-space applications. According to MIPS (early 2010), no similar
40  * facility is universally available on the MIPS architectures, so it's up
41  * to individual OSes to provide such.
42  */
43  const char *file_name = "/proc/cpuinfo";
44  char cpuinfo_line[256];
45  FILE *f = NULL;
46 
47  if ((f = fopen (file_name, "r")) == NULL)
48  return FALSE;
49 
50  while (fgets (cpuinfo_line, sizeof (cpuinfo_line), f) != NULL)
51  {
52  if (strstr (cpuinfo_line, search_string) != NULL)
53  {
54  fclose (f);
55  return TRUE;
56  }
57  }
58 
59  fclose (f);
60 #endif
61 
62  /* Did not find string in the proc file, or not Linux ELF. */
63  return FALSE;
64 }
65 
66 #endif
67 
70 {
71 #ifdef USE_LOONGSON_MMI
72  /* I really don't know if some Loongson CPUs don't have MMI. */
73  if (!_pixman_disabled ("loongson-mmi") && have_feature ("Loongson"))
74  imp = _pixman_implementation_create_mmx (imp);
75 #endif
76 
77 #ifdef USE_MIPS_DSPR2
78  if (!_pixman_disabled ("mips-dspr2"))
79  {
80  int already_compiling_everything_for_dspr2 = 0;
81 #if defined(__mips_dsp) && (__mips_dsp_rev >= 2)
82  already_compiling_everything_for_dspr2 = 1;
83 #endif
84  if (already_compiling_everything_for_dspr2 ||
85  /* Only currently available MIPS core that supports DSPr2 is 74K. */
86  have_feature ("MIPS 74K"))
87  {
89  }
90  }
91 #endif
92 
93  return imp;
94 }
@ FALSE
Definition: dd.h:101
@ TRUE
Definition: dd.h:102
#define fopen
Definition: xxstdio.h:21
#define fgets
Definition: xxstdio.h:29
mpz_t * f
Definition: gen-fib.c:34
#define NULL
Definition: ftobjs.h:61
char * strstr()
#define fclose
Definition: debug.h:100
char file_name[][1024]
Definition: cwebboot.c:318
pixman_bool_t _pixman_disabled(const char *name)
pixman_implementation_t * _pixman_implementation_create_mips_dspr2(pixman_implementation_t *fallback)
pixman_implementation_t * _pixman_mips_get_implementations(pixman_implementation_t *imp)
Definition: pixman-mips.c:69
int pixman_bool_t
Definition: pixman.h:113
str_number search_string(str_number search)
Definition: stringpool.c:228
#define FILE
Definition: t1stdio.h:34