Integrate uACPI

kernel/hal/x86_64/uACPI/tests/test-cases/read-from-deleted-field.asl

@@ -0,0 +1,40 @@
+// Name: IO from deleted fields doesn't crash
+// Expect: int => 0
+
+DefinitionBlock ("", "DSDT", 2, "uTEST", "TESTTABL", 0xF0F0F0F0)
+{
+    External(MAIN)
+
+    If (!CondRefOf(MAIN)) {
+        Name (MAIN, Ones)
+
+        /*
+         * Load ourselves again, we won't enter this branch a second time.
+         * We expect this LoadTable call to fail because of the invalid
+         * field store.
+         */
+        MAIN = LoadTable("DSDT", "uTEST", "TESTTABL", "", "", 0)
+        Return (0)
+    }
+
+    Method (TEST) {
+        OperationRegion(MYRE, SystemMemory, 0, 128)
+        Field (MYRE, AnyAcc, NoLock) {
+            FILD, 32
+        }
+
+        FILD = 1
+        Return (RefOf(FILD))
+    }
+
+    Name (X, "")
+
+    /*
+     * Get a dangling field object and make X be this field.
+     * Then attempt to perform a read from it.
+     */
+    Local0 = TEST()
+    CopyObject(DerefOf(Local0), X)
+
+    Debug = X
+}