Fix assembly labels on MacOS X64 to be LOCAL_LABEL

src/coreclr/vm/amd64/Context.S

@@ -23,7 +23,7 @@ NESTED_ENTRY ClrRestoreNonvolatileContextWorker, _TEXT, NoHandler
         mov     r11, rsi
 
         test    byte ptr [r10 + OFFSETOF__CONTEXT__ContextFlags], CONTEXT_INTEGER
-        je      Done_Restore_CONTEXT_INTEGER
+        je      LOCAL_LABEL(Done_Restore_CONTEXT_INTEGER)
         mov     rbx, [r10 + OFFSETOF__CONTEXT__Rbx]
         mov     rcx, [r10 + OFFSETOF__CONTEXT__Rcx]
         mov     rdx, [r10 + OFFSETOF__CONTEXT__Rdx]
@@ -36,25 +36,25 @@ NESTED_ENTRY ClrRestoreNonvolatileContextWorker, _TEXT, NoHandler
         mov     r13, [r10 + OFFSETOF__CONTEXT__R13]
         mov     r14, [r10 + OFFSETOF__CONTEXT__R14]
         mov     r15, [r10 + OFFSETOF__CONTEXT__R15]
-    Done_Restore_CONTEXT_INTEGER:
+    LOCAL_LABEL(Done_Restore_CONTEXT_INTEGER):
 
         test    byte ptr [r10 + OFFSETOF__CONTEXT__ContextFlags], CONTEXT_CONTROL
-        je      Done_Restore_CONTEXT_CONTROL
+        je      LOCAL_LABEL(Done_Restore_CONTEXT_CONTROL)
 
         test    r11, r11
-        je      No_Ssp_Update
+        je      LOCAL_LABEL(No_Ssp_Update)
         rdsspq  rax
         sub     r11, rax
         shr     r11, 3
         // the incsspq instruction uses only the lowest 8 bits of the argument, so we need to loop in case the increment is larger than 255
         mov     rax, 255
-    Update_Loop:
+    LOCAL_LABEL(Update_Loop):
         cmp     r11, rax
         cmovb   rax, r11
         incsspq rax
         sub     r11, rax
-        ja      Update_Loop
-    No_Ssp_Update:
+        ja      LOCAL_LABEL(Update_Loop)
+    LOCAL_LABEL(No_Ssp_Update):
 
         // When user-mode shadow stacks are enabled, and for example the intent is to continue execution in managed code after
         // exception handling, iret and ret can't be used because their shadow stack enforcement would not allow that transition,
@@ -63,7 +63,7 @@ NESTED_ENTRY ClrRestoreNonvolatileContextWorker, _TEXT, NoHandler
         mov     rax, [r10 + OFFSETOF__CONTEXT__Rip]
         mov     rsp, [r10 + OFFSETOF__CONTEXT__Rsp]
         jmp     rax
-    Done_Restore_CONTEXT_CONTROL:
+    LOCAL_LABEL(Done_Restore_CONTEXT_CONTROL):
 
         // The function was not asked to restore the control registers so we return back to the caller
         pop     rbp

src/coreclr/vm/amd64/virtualcallstubamd64.S

@@ -57,31 +57,31 @@ LEAF_ENTRY ResolveWorkerChainLookupAsmStub, _TEXT
         mov     rax, BACKPATCH_FLAG  // First we check if r11 has the BACKPATCH_FLAG set
         and     rax, r11             // Set the flags based on (BACKPATCH_FLAG and r11)
         pop     rax                  // pop the pointer to the ResolveCacheElem from the top of stack (leaving the flags unchanged)
-        jnz     Fail_RWCLAS          // If the BACKPATCH_FLAGS is set we will go directly to the ResolveWorkerAsmStub
+        jnz     LOCAL_LABEL(Fail_RWCLAS)          // If the BACKPATCH_FLAGS is set we will go directly to the ResolveWorkerAsmStub
 
-MainLoop_RWCLAS:
+LOCAL_LABEL(MainLoop_RWCLAS):
         mov     rax, [rax+0x18]   // get the next entry in the chain (don't bother checking the first entry again)
         test    rax,rax          // test if we hit a terminating NULL
-        jz      Fail_RWCLAS
+        jz      LOCAL_LABEL(Fail_RWCLAS)
 
         cmp    rdx, [rax+0x00]    // compare our MT with the one in the ResolveCacheElem
-        jne    MainLoop_RWCLAS
+        jne    LOCAL_LABEL(MainLoop_RWCLAS)
         cmp    r10, [rax+0x08]    // compare our DispatchToken with one in the ResolveCacheElem
-        jne    MainLoop_RWCLAS
-Success_RWCLAS:
+        jne    LOCAL_LABEL(MainLoop_RWCLAS)
+LOCAL_LABEL(Success_RWCLAS):
         PREPARE_EXTERNAL_VAR CHAIN_SUCCESS_COUNTER, rdx
         sub    qword ptr [rdx],1 // decrement success counter
-        jl     Promote_RWCLAS
+        jl     LOCAL_LABEL(Promote_RWCLAS)
         mov    rax, [rax+0x10]    // get the ImplTarget
         pop    rdx
         jmp    rax
 
-Promote_RWCLAS:                  // Move this entry to head position of the chain
+LOCAL_LABEL(Promote_RWCLAS):                  // Move this entry to head position of the chain
         // be quick to reset the counter so we don't get a bunch of contending threads
         mov    qword ptr [rdx], INITIAL_SUCCESS_COUNT
         or     r11, PROMOTE_CHAIN_FLAG
         mov    r10, rax          // We pass the ResolveCacheElem to ResolveWorkerAsmStub instead of the DispatchToken
-Fail_RWCLAS:
+LOCAL_LABEL(Fail_RWCLAS):
         pop    rdx               // Restore the original saved rdx value
         push   r10               // pass the DispatchToken or ResolveCacheElem to promote to ResolveWorkerAsmStub