From: Allan Sandfeld Jensen <allan.jensen@digia.com>
Date: Fri, 10 Oct 2014 12:50:18 +0000 (+0200)
Subject: Do not use JIT on big endian architectures
X-Git-Tag: archive/raspbian/5.212.0_alpha2-6+rpi1~5^2^2^2^2^2^2~11
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=31e7877e405b2a9ef6651fcb9ad65986f403a54a;p=qtwebkit-opensource-src.git

Do not use JIT on big endian architectures

All the JIT implementations targets the little-endian versions of ARM,
MIPS and SH4 respectively. So in case anyone builds on those platforms
we should not enable JIT.

Task-number: QTBUG-41896
Change-Id: I5be167511e2c3eac6c63e603b82da84fb6b29eaa
Reviewed-by: Julien Brianceau <jbriance@cisco.com>
Reviewed-by: Michael Bruning <michael.bruning@digia.com>

Gbp-Pq: Name do_not_use_jit_on_big_endian_machines.patch
---

diff --git a/Source/WTF/wtf/Platform.h b/Source/WTF/wtf/Platform.h
index 4594ec85..eabd3dd9 100644
--- a/Source/WTF/wtf/Platform.h
+++ b/Source/WTF/wtf/Platform.h
@@ -128,6 +128,9 @@
 /* CPU(SH4) - SuperH SH-4 */
 #if defined(__SH4__)
 #define WTF_CPU_SH4 1
+#ifdef __BIG_ENDIAN__
+#define WTF_CPU_BIG_ENDIAN 1
+#endif
 #endif
 
 /* CPU(SPARC32) - SPARC 32-bit */
@@ -759,6 +762,11 @@
 #define ENABLE_JIT 0
 #endif
 
+/* All the current JIT implementations target little-endian */
+#if CPU(BIG_ENDIAN)
+#define ENABLE_JIT 0
+#endif
+
 /* Disable JIT on x32 */
 #if CPU(X32)
 #define ENABLE_JIT 0