From efc7e02911f2244c693fe8336f7b4b1c0ea3bc09 Mon Sep 17 00:00:00 2001
From: Janne Koskinen <janne.p.koskinen@qt.io>
Date: Wed, 24 Oct 2018 14:57:44 +0200
Subject: INTEGRITY: Fix missing uint/int 128 support for 64-bit ARM

Add 64bit specializations for mul_overflow.

Change-Id: I8bba69233dd71b94346983a100cf4d69bfc686f7
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
---
 src/corelib/global/qnumeric_p.h | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/src/corelib/global/qnumeric_p.h b/src/corelib/global/qnumeric_p.h
index 9c8514f5a3..e318c3759b 100644
--- a/src/corelib/global/qnumeric_p.h
+++ b/src/corelib/global/qnumeric_p.h
@@ -64,6 +64,10 @@
 #include <float.h>
 #endif
 
+# if defined(Q_OS_INTEGRITY) && defined(Q_PROCESSOR_ARM_64)
+#include <arm64_ghs.h>
+#endif
+
 #if !defined(Q_CC_MSVC) && (defined(Q_OS_QNX) || defined(Q_CC_INTEL))
 #  include <math.h>
 #  ifdef isnan
@@ -323,6 +327,38 @@ mul_overflow(T v1, T v2, T *r)
     return lr > std::numeric_limits<T>::max() || lr < std::numeric_limits<T>::min();
 }
 
+# if defined(Q_OS_INTEGRITY) && defined(Q_PROCESSOR_ARM_64)
+template <> inline bool mul_overflow(quint64 v1, quint64 v2, quint64 *r)
+{
+    *r = v1 * v2;
+    return __MULUH64(v1, v2);
+}
+template <> inline bool mul_overflow(qint64 v1, qint64 v2, qint64 *r)
+{
+    qint64 high = __MULSH64(v1, v2);
+    if (high == 0) {
+        *r = v1 * v2;
+        return *r < 0;
+    }
+    if (high == -1) {
+        *r = v1 * v2;
+        return *r >= 0;
+    }
+    return true;
+}
+
+template <> inline bool mul_overflow(uint64_t v1, uint64_t v2, uint64_t *r)
+{
+    return mul_overflow<quint64>(v1,v2,reinterpret_cast<quint64*>(r));
+}
+
+template <> inline bool mul_overflow(int64_t v1, int64_t v2, int64_t *r)
+{
+    return mul_overflow<qint64>(v1,v2,reinterpret_cast<qint64*>(r));
+}
+
+#endif
+
 #  if defined(Q_CC_MSVC) && defined(Q_PROCESSOR_X86)
 // We can use intrinsics for the unsigned operations with MSVC
 template <> inline bool add_overflow(unsigned v1, unsigned v2, unsigned *r)
-- 
cgit v1.2.3