Title: [281716] branches/safari-612.1.29.14-branch/Source/_javascript_Core/assembler/AssemblerBuffer.h
- Revision
- 281716
- Author
- [email protected]
- Date
- 2021-08-27 12:38:30 -0700 (Fri, 27 Aug 2021)
Log Message
Apply patch. rdar://problem/82450034
Modified Paths
Diff
Modified: branches/safari-612.1.29.14-branch/Source/_javascript_Core/assembler/AssemblerBuffer.h (281715 => 281716)
--- branches/safari-612.1.29.14-branch/Source/_javascript_Core/assembler/AssemblerBuffer.h 2021-08-27 19:37:37 UTC (rev 281715)
+++ branches/safari-612.1.29.14-branch/Source/_javascript_Core/assembler/AssemblerBuffer.h 2021-08-27 19:38:30 UTC (rev 281716)
@@ -203,8 +203,29 @@
};
#if CPU(ARM64E)
+#if PLATFORM(MAC)
class ARM64EHash {
public:
+ ARM64EHash(void* initialHash)
+ : m_hash(static_cast<uint32_t>(bitwise_cast<uintptr_t>(initialHash)))
+ {
+ }
+
+ ALWAYS_INLINE uint32_t update(uint32_t value, uint32_t, void*)
+ {
+ uint64_t input = value ^ m_hash;
+ uint64_t a = static_cast<uint32_t>(tagInt(input, static_cast<PtrTag>(0)) >> 39);
+ uint64_t b = tagInt(input, static_cast<PtrTag>(0xb7e151628aed2a6a)) >> 23;
+ m_hash = a ^ b;
+ return m_hash;
+ }
+
+ private:
+ uint32_t m_hash;
+ };
+#else
+ class ARM64EHash {
+ public:
ARM64EHash(void* diversifier)
{
setUpdatedHash(0, 0, diversifier);
@@ -259,7 +280,8 @@
uint64_t m_hash;
};
-#endif
+#endif // PLATFORM(MAC)
+#endif // CPU(ARM64E)
class AssemblerBuffer {
public:
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