Changeset 252949 in webkit for trunk/Source/JavaScriptCore/heap

Timestamp:

Nov 29, 2019, 11:03:34 AM (5 years ago)

Author:

[email protected]

Message:

Use default implementation for JSVALUE64 with GCC on unknown platform.
​https://bugs.webkit.org/show_bug.cgi?id=204701

Building on ppc64le and s390x failed with
#error "Unknown architecture."
Use the default implementation as fallback in these cases.

Patch by Eike Rathke <​[email protected]> on 2019-11-29
Reviewed by Saam Barati.

• heap/GCMemoryOperations.h:

(JSC::gcSafeMemcpy):
(JSC::gcSafeMemmove):
(JSC::gcSafeZeroMemory):

File:

• trunk/Source/JavaScriptCore/heap/GCMemoryOperations.h (modified) (3 diffs)

trunk/Source/JavaScriptCore/heap/GCMemoryOperations.h

@@ -123 +123 @@
         );
 #else
-#error "Unknown architecture."
+    slowPathForwardMemcpy();
 #endif // CPU(X86_64)
     } else {
@@ -239 +239 @@
         );
 #else
-#error "Unknown architecture."
+        slowPathBackwardsMemmove();
 #endif // CPU(X86_64)
     }
@@ -297 +297 @@
     );
 #else
-#error "Unknown architecture."
+    size_t count = bytes / 8;
+    for (size_t i = 0; i < count; ++i)
+        bitwise_cast<volatile uint64_t*>(dst)[i] = 0;
 #endif // CPU(X86_64)
 #else