iOS, balanced return stack

stack balenced for entering and exiting _privateSnippetExecutor

Change-Id: I381c487d3412a39b113e9725807fd018b2b4036a

bridges/source/cpp_uno/gcc3_ios/ios64_helper.s

@@ -199,35 +199,33 @@ _privateSnippetExecutor:
     .cfi_offset w29, -16
 
     // _privateSnippetExecutor is jumped to from codeSnippet_*
-    stp    x29, x30, [sp, #-0x10]!
-    mov    x29, sp
+    stp x29, x30, [sp, #-0x10]!
+    mov x29, sp
 
     // push all GP, FP/SIMD registers to the stack
-    stp     x6, x7, [sp, #-16]!
-    stp     x4, x5, [sp, #-16]!
-    stp     x2, x3, [sp, #-16]!
-    stp     x0, x1, [sp, #-16]!
-    stp     d6, d7, [sp, #-16]!
-    stp     d4, d5, [sp, #-16]!
-    stp     d2, d3, [sp, #-16]!
-    stp     d0, d1, [sp, #-16]!
+    stp x6, x7, [sp, #-16]!
+    stp x4, x5, [sp, #-16]!
+    stp x2, x3, [sp, #-16]!
+    stp x0, x1, [sp, #-16]!
+    stp d6, d7, [sp, #-16]!
+    stp d4, d5, [sp, #-16]!
+    stp d2, d3, [sp, #-16]!
+    stp d0, d1, [sp, #-16]!
 
     // push x8 (RC pointer) and lr to stack
     stp     x8, lr, [sp, #-16]!
 
     // First argument (x15 set up in the codeSnippet instance)
     // Second argument: The pointer to all the above
-    mov     x0, x14
-    mov     x1, x15
-    mov     x2, sp
-
-    bl      _cpp_vtable_call
-//    ldp     x8, lr, [sp, #0]
-//    add     sp, sp, #144
-//    ret     lr
-    add     sp, sp, #144
-    ldp    x29, x30, [sp], #0x10
-    ret
+    mov x0, x14
+    mov x1, x15
+    mov x2, sp
+    bl  _cpp_vtable_call
+    .globl _jantest
+    ldp     x8, lr, [sp, #0]
+    add sp, sp, #144
+    ldp x29, x30, [sp], #0x10
+    ret lr
     .cfi_endproc
 
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