1 files changed, 69 insertions, 0 deletions
diff --git a/bridges/source/cpp_uno/gcc3_linux_aarch64/callvirtualfunction.cxx b/bridges/source/cpp_uno/gcc3_linux_aarch64/callvirtualfunction.cxx
new file mode 100644
index 000000000..b944f31cf
--- /dev/null
+++ b/bridges/source/cpp_uno/gcc3_linux_aarch64/callvirtualfunction.cxx
@@ -0,0 +1,69 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <sal/config.h>
+
+#include <cstring>
+
+#include <sal/types.h>
+#include <sal/alloca.h>
+
+#include "callvirtualfunction.hxx"
+
+void callVirtualFunction(
+    unsigned long function, unsigned long * gpr, unsigned long * fpr,
+    unsigned long * stack, sal_Int32 sp, void * ret)
+{
+    void * stackargs;
+    if (sp != 0) {
+        stackargs = alloca(((sp + 1) >> 1) * 16);
+        std::memcpy(stackargs, stack, sp * 8);
+    }
+    asm volatile(
+        "ldp x0, x1, [%[gpr_]]\n\t"
+        "ldp x2, x3, [%[gpr_], #16]\n\t"
+        "ldp x4, x5, [%[gpr_], #32]\n\t"
+        "ldp x6, x7, [%[gpr_], #48]\n\t"
+        "ldr x8, %[ret_]\n\t"
+        "ldr x9, %[function_]\n\t"
+        "ldp d0, d1, [%[fpr_]]\n\t"
+        "ldp d2, d3, [%[fpr_], #16]\n\t"
+        "ldp d4, d5, [%[fpr_], #32]\n\t"
+        "ldp d6, d7, [%[fpr_], #48]\n\t"
+        "blr x9\n\t"
+        "stp x0, x1, [%[gpr_]]\n\t"
+        "stp d0, d1, [%[fpr_]]\n\t"
+        "stp d2, d3, [%[fpr_], #16]\n\t"
+        :: [gpr_]"r" (gpr), [fpr_]"r" (fpr), [function_]"m" (function),
+           [ret_]"m" (ret),
+           "m" (stackargs) // dummy input to prevent optimizing the alloca away
+        : "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9", "r10",
+          "r11", "r12", "r13", "r14", "r15", "r16", "r17",
+#if !defined ANDROID && !defined MACOSX
+          "r18"/*TODO?*/,
+#endif
+          "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", "v8", "v9", "v10", "v11",
+          "v12", "v13", "v14", "v15", "v16", "v17", "v18", "v19", "v20", "v21",
+          "v22", "v23", "v24", "v25", "v26", "v27", "v28", "v29", "v30", "v31",
+          "memory"
+          // only the bottom 64 bits of v8--15 need to be preserved by callees
+    );
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */