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/*
* Copyright © 2000 SuSE, Inc.
* Copyright © 2007 Red Hat, Inc.
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of SuSE not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. SuSE makes no representations about the
* suitability of this software for any purpose. It is provided "as is"
* without express or implied warranty.
*
* SuSE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL SuSE
* BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "pixman-private.h"
#if defined(USE_MIPS_DSPR2) || defined(USE_LOONGSON_MMI)
#include <string.h>
#include <stdlib.h>
static pixman_bool_t
have_feature (const char *search_string)
{
#if defined (__linux__) /* linux ELF */
/* Simple detection of MIPS features at runtime for Linux.
* It is based on /proc/cpuinfo, which reveals hardware configuration
* to user-space applications. According to MIPS (early 2010), no similar
* facility is universally available on the MIPS architectures, so it's up
* to individual OSes to provide such.
*/
const char *file_name = "/proc/cpuinfo";
char cpuinfo_line[256];
FILE *f = NULL;
if ((f = fopen (file_name, "r")) == NULL)
return FALSE;
while (fgets (cpuinfo_line, sizeof (cpuinfo_line), f) != NULL)
{
if (strstr (cpuinfo_line, search_string) != NULL)
{
fclose (f);
return TRUE;
}
}
fclose (f);
#endif
/* Did not find string in the proc file, or not Linux ELF. */
return FALSE;
}
#endif
pixman_implementation_t *
_pixman_mips_get_implementations (pixman_implementation_t *imp)
{
#ifdef USE_LOONGSON_MMI
/* I really don't know if some Loongson CPUs don't have MMI. */
if (!_pixman_disabled ("loongson-mmi") && have_feature ("Loongson"))
imp = _pixman_implementation_create_mmx (imp);
#endif
#ifdef USE_MIPS_DSPR2
/* Only currently available MIPS core that supports DSPr2 is 74K. */
if (!_pixman_disabled ("mips-dspr2") && have_feature ("MIPS 74K"))
imp = _pixman_implementation_create_mips_dspr2 (imp);
#endif
return imp;
}
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