xtensa: add support for xtensa architecture

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Keith Packard <keithp@keithp.com>

hw/xfree86/common/compiler.h

@@ -1352,7 +1352,10 @@ stl_u(unsigned long val, unsigned int *p)
 #else                           /* ix86 */
 
 #if !defined(__SUNPRO_C)
-#if !defined(FAKEIT) && !defined(__mc68000__) && !defined(__arm__) && !defined(__sh__) && !defined(__hppa__) && !defined(__s390__) && !defined(__m32r__) && !defined(__aarch64__) && !defined(__arc__)
+#if !defined(FAKEIT) && !defined(__mc68000__) && !defined(__arm__) && \
+    !defined(__sh__) && !defined(__hppa__) && !defined(__s390__) && \
+    !defined(__m32r__) && !defined(__aarch64__) && !defined(__arc__) && \
+    !defined(__xtensa__)
 #ifdef GCCUSESGAS
 
 /*

hw/xfree86/os-support/linux/lnx_video.c

@@ -60,7 +60,8 @@ static Bool ExtendedEnabled = FALSE;
       !defined(__nds32__) && \
       !defined(__arm__) && \
       !defined(__aarch64__) && \
-      !defined(__arc__)
+      !defined(__arc__) && \
+      !defined(__xtensa__)
 
 /*
  * Due to conflicts with "compiler.h", don't rely on <sys/io.h> to declare

include/servermd.h

@@ -313,6 +313,20 @@ SOFTWARE.
 
 #endif                          /* ARC */
 
+#ifdef __xtensa__
+
+#ifdef __XTENSA_EL__
+#define IMAGE_BYTE_ORDER        LSBFirst
+#define BITMAP_BIT_ORDER        LSBFirst
+#endif
+#ifdef __XTENSA_EB__
+#define IMAGE_BYTE_ORDER        MSBFirst
+#define BITMAP_BIT_ORDER        MSBFirst
+#endif
+#define GLYPHPADBYTES           4
+
+#endif                          /* __xtensa__ */
+
 /* size of buffer to use with GetImage, measured in bytes. There's obviously
  * a trade-off between the amount of heap used and the number of times the
  * ddx routine has to be called.