1 files changed, 84 insertions, 0 deletions
diff --git a/pixman/pixman/pixman-mips.c b/pixman/pixman/pixman-mips.c
new file mode 100644
index 000000000..2b280c6f1
--- /dev/null
+++ b/pixman/pixman/pixman-mips.c
@@ -0,0 +1,84 @@
+/*
+ * 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;
+}