From 0cfeb626c06b991257bc3238709feb838350f394 Mon Sep 17 00:00:00 2001
From: Mazen NEIFER <mazen@nestwave.com>
Date: Wed, 8 Feb 2017 16:26:32 +0100
Subject: [PATCH] Xtensa port: Fixed scheduling bug caused to missing Endianess
 related macros.

XCC does neither define __BYTE_ORDER__ nor __ORDER_LITTLE/BIG_ENDIAN__ macros.
This resulted in field preempt of thread.base not correctly built from other
union fields prio and sched_locked, which caused wrong scheduling.

Change-Id: I8566ef4a5cf555906c012c4adc488f9afb26c053
Signed-off-by: Mazen NEIFER <mazen@nestwave.com>
---
 include/arch/xtensa/arch.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/include/arch/xtensa/arch.h b/include/arch/xtensa/arch.h
index 318f6a86a89..e650fef22ad 100644
--- a/include/arch/xtensa/arch.h
+++ b/include/arch/xtensa/arch.h
@@ -24,6 +24,16 @@ extern "C" {
 #include <stdint.h>
 #include <sw_isr_table.h>
 #include <arch/xtensa/xtensa_irq.h>
+#include <xtensa/config/core.h>
+
+/*
+ * XCC does not define the following macros with the expected names, but the
+ * file machine/endian.h from XT_LIB defines similar ones. Thus we include it
+ * and define the missing macros ourselves.
+ */
+#define __BYTE_ORDER__ XCHAL_MEMORY_ORDER
+#define __ORDER_BIG_ENDIAN__ XTHAL_BIGENDIAN
+#define __ORDER_LITTLE_ENDIAN__ XTHAL_LITTLEENDIAN
 
 #define STACK_ALIGN 16
 #define OCTET_TO_SIZEOFUNIT(X) (X)