1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/cairo/libpixman/src/pixman-mips.c Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,94 @@
1.4 +/*
1.5 + * Copyright © 2000 SuSE, Inc.
1.6 + * Copyright © 2007 Red Hat, Inc.
1.7 + *
1.8 + * Permission to use, copy, modify, distribute, and sell this software and its
1.9 + * documentation for any purpose is hereby granted without fee, provided that
1.10 + * the above copyright notice appear in all copies and that both that
1.11 + * copyright notice and this permission notice appear in supporting
1.12 + * documentation, and that the name of SuSE not be used in advertising or
1.13 + * publicity pertaining to distribution of the software without specific,
1.14 + * written prior permission. SuSE makes no representations about the
1.15 + * suitability of this software for any purpose. It is provided "as is"
1.16 + * without express or implied warranty.
1.17 + *
1.18 + * SuSE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
1.19 + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL SuSE
1.20 + * BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
1.21 + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
1.22 + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
1.23 + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.24 + */
1.25 +#ifdef HAVE_CONFIG_H
1.26 +#include <config.h>
1.27 +#endif
1.28 +
1.29 +#include "pixman-private.h"
1.30 +
1.31 +#if defined(USE_MIPS_DSPR2) || defined(USE_LOONGSON_MMI)
1.32 +
1.33 +#include <string.h>
1.34 +#include <stdlib.h>
1.35 +
1.36 +static pixman_bool_t
1.37 +have_feature (const char *search_string)
1.38 +{
1.39 +#if defined (__linux__) /* linux ELF */
1.40 + /* Simple detection of MIPS features at runtime for Linux.
1.41 + * It is based on /proc/cpuinfo, which reveals hardware configuration
1.42 + * to user-space applications. According to MIPS (early 2010), no similar
1.43 + * facility is universally available on the MIPS architectures, so it's up
1.44 + * to individual OSes to provide such.
1.45 + */
1.46 + const char *file_name = "/proc/cpuinfo";
1.47 + char cpuinfo_line[256];
1.48 + FILE *f = NULL;
1.49 +
1.50 + if ((f = fopen (file_name, "r")) == NULL)
1.51 + return FALSE;
1.52 +
1.53 + while (fgets (cpuinfo_line, sizeof (cpuinfo_line), f) != NULL)
1.54 + {
1.55 + if (strstr (cpuinfo_line, search_string) != NULL)
1.56 + {
1.57 + fclose (f);
1.58 + return TRUE;
1.59 + }
1.60 + }
1.61 +
1.62 + fclose (f);
1.63 +#endif
1.64 +
1.65 + /* Did not find string in the proc file, or not Linux ELF. */
1.66 + return FALSE;
1.67 +}
1.68 +
1.69 +#endif
1.70 +
1.71 +pixman_implementation_t *
1.72 +_pixman_mips_get_implementations (pixman_implementation_t *imp)
1.73 +{
1.74 +#ifdef USE_LOONGSON_MMI
1.75 + /* I really don't know if some Loongson CPUs don't have MMI. */
1.76 + if (!_pixman_disabled ("loongson-mmi") && have_feature ("Loongson"))
1.77 + imp = _pixman_implementation_create_mmx (imp);
1.78 +#endif
1.79 +
1.80 +#ifdef USE_MIPS_DSPR2
1.81 + if (!_pixman_disabled ("mips-dspr2"))
1.82 + {
1.83 + int already_compiling_everything_for_dspr2 = 0;
1.84 +#if defined(__mips_dsp) && (__mips_dsp_rev >= 2)
1.85 + already_compiling_everything_for_dspr2 = 1;
1.86 +#endif
1.87 + if (already_compiling_everything_for_dspr2 ||
1.88 + /* Only currently available MIPS core that supports DSPr2 is 74K. */
1.89 + have_feature ("MIPS 74K"))
1.90 + {
1.91 + imp = _pixman_implementation_create_mips_dspr2 (imp);
1.92 + }
1.93 + }
1.94 +#endif
1.95 +
1.96 + return imp;
1.97 +}
