Index: src/runtime/lookup-asm/lookup-asm-powerpc-elf.S
==================================================================
--- src/runtime/lookup-asm/lookup-asm-powerpc-elf.S
+++ src/runtime/lookup-asm/lookup-asm-powerpc-elf.S
@@ -85,11 +85,14 @@
 	mflr	%r6
 	mtlr	%r7
 	addis	%r6, %r6, .Lbiased_got2-0b@ha
 	addi	%r6, %r6, .Lbiased_got2-0b@l
 
-	rlwinm	%r5, %r3, 1, 0x1C
+	lwz	%r5, .Lgot_objc_tagged_pointer_secret-.Lbiased_got2(%r6)
+	lwz	%r5, 0(%r5)
+	xor	%r5, %r3, %r5
+	rlwinm	%r5, %r5, 1, 0x1C
 
 	lwz	%r6, .Lgot_objc_tagged_pointer_classes-.Lbiased_got2(%r6)
 	lwzx	%r5, %r6, %r5
 	lwz	%r5, 32(%r5)
 
@@ -138,11 +141,13 @@
 .Lbiased_got2 = .+0x8000
 .Lgot_objc_method_not_found:
 	.long objc_method_not_found
 .Lgot_objc_method_not_found_stret:
 	.long objc_method_not_found_stret
+.Lgot_objc_tagged_pointer_secret:
+	.long objc_tagged_pointer_secret
 .Lgot_objc_tagged_pointer_classes:
 	.long objc_tagged_pointer_classes
 
 #ifdef OF_LINUX
 .section .note.GNU-stack, "", @progbits
 #endif