Merge pull request #10260 from sdmaclea/PR-ARM64-REMOVE-X19-WORKAROUND

[Arm64/Unix] Remove x19 corruption workaround
dotnet · Mar 17, 2017 · f716e45 · f716e45
2 parents 008aacc + c479cc7
commit f716e45
Showing 1 changed file with 1 addition and 4 deletions.
diff --git a/src/vm/arm64/calldescrworkerarm64.S b/src/vm/arm64/calldescrworkerarm64.S
@@ -13,8 +13,7 @@
 
 NESTED_ENTRY CallDescrWorkerInternal, _TEXT, NoHandler
     PROLOG_SAVE_REG_PAIR_INDEXED   fp, lr, -32
-    PROLOG_SAVE_REG    x19, 16
-    PROLOG_SAVE_REG    x0, 24
+    PROLOG_SAVE_REG    x19, 16           //the stack slot at sp+24 is empty for 16 byte alligment
 
     mov     x19, x0 // save pCallDescrData in x19
 
@@ -69,8 +68,6 @@ LOCAL_LABEL(NoFloatingPoint):
     ldr     x9, [x19,#CallDescrData__pTarget]
     blr     x9
 
-    ldr     x19, [fp, 24] // Fixup corrupted X19 caller preserved register
-
     ldr     w3, [x19,#CallDescrData__fpReturnSize]
 
     // Int return case