From c08d2b8ccb0158dbf1f529f80cc3236e66236cce Mon Sep 17 00:00:00 2001
From: Alexey Brodkin <Alexey.Brodkin@synopsys.com>
Date: Thu, 1 May 2014 15:39:29 +0300
Subject: [PATCH] ARC: Add support for ARC architecture

Xorg server could be built for and run on Synopsys DesignWare ARC cores.
These changes are required for successful building and execution of the server.

Both little-endian and big-endian flavors of ARC cores are supported.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Acked-by: Adam Jackson <ajax@redhat.com>
Reviewed-by: Egbert Eich <eich@freedesktop.org>
Signed-off-by: Keith Packard <keithp@keithp.com>
---
 hw/xfree86/common/compiler.h            |  4 ++--
 hw/xfree86/os-support/linux/lnx_video.c |  3 ++-
 include/servermd.h                      | 13 +++++++++++++
 3 files changed, 17 insertions(+), 3 deletions(-)

diff --git a/hw/xfree86/common/compiler.h b/hw/xfree86/common/compiler.h
index fb95f58bf..0319de06b 100644
--- a/hw/xfree86/common/compiler.h
+++ b/hw/xfree86/common/compiler.h
@@ -1352,7 +1352,7 @@ 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__)
+#if !defined(FAKEIT) && !defined(__mc68000__) && !defined(__arm__) && !defined(__sh__) && !defined(__hppa__) && !defined(__s390__) && !defined(__m32r__) && !defined(__aarch64__) && !defined(__arc__)
 #ifdef GCCUSESGAS
 
 /*
@@ -1454,7 +1454,7 @@ inl(unsigned short port)
 
 #endif                          /* GCCUSESGAS */
 
-#else                           /* !defined(FAKEIT) && !defined(__mc68000__)  && !defined(__arm__) && !defined(__sh__) && !defined(__hppa__) && !defined(__m32r__) */
+#else                           /* !defined(FAKEIT) && !defined(__mc68000__)  && !defined(__arm__) && !defined(__sh__) && !defined(__hppa__) && !defined(__m32r__) && !defined(__arc__) */
 
 static __inline__ void
 outb(unsigned short port, unsigned char val)
diff --git a/hw/xfree86/os-support/linux/lnx_video.c b/hw/xfree86/os-support/linux/lnx_video.c
index 47f5abc2c..40765fccf 100644
--- a/hw/xfree86/os-support/linux/lnx_video.c
+++ b/hw/xfree86/os-support/linux/lnx_video.c
@@ -59,7 +59,8 @@ static Bool ExtendedEnabled = FALSE;
       !defined(__mips__) && \
       !defined(__nds32__) && \
       !defined(__arm__) && \
-      !defined(__aarch64__)
+      !defined(__aarch64__) && \
+      !defined(__arc__)
 
 /*
  * Due to conflicts with "compiler.h", don't rely on <sys/io.h> to declare
diff --git a/include/servermd.h b/include/servermd.h
index 11f6c1022..2d1ccb19f 100644
--- a/include/servermd.h
+++ b/include/servermd.h
@@ -300,6 +300,19 @@ SOFTWARE.
 
 #endif                          /* __aarch64__ */
 
+#if defined(__arc__)
+
+#if defined(__BIG_ENDIAN__)
+#define IMAGE_BYTE_ORDER	MSBFirst
+#define BITMAP_BIT_ORDER	MSBFirst
+#else
+#define IMAGE_BYTE_ORDER	LSBFirst
+#define BITMAP_BIT_ORDER	LSBFirst
+#endif
+#define GLYPHPADBYTES		4
+
+#endif                          /* ARC */
+
 /* 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.