1 files changed, 84 insertions, 0 deletions
diff --git a/src/VBox/Runtime/common/math/gcc/divmoddi4.c b/src/VBox/Runtime/common/math/gcc/divmoddi4.c
new file mode 100644
index 00000000..c85498d3
--- /dev/null
+++ b/src/VBox/Runtime/common/math/gcc/divmoddi4.c
@@ -0,0 +1,84 @@
+/* $Id: divmoddi4.c $ */
+/** @file
+ * IPRT - __divmoddi4 implementation
+ */
+
+/*
+ * Copyright (C) 2006-2023 Oracle and/or its affiliates.
+ *
+ * This file is part of VirtualBox base platform packages, as
+ * available from https://www.virtualbox.org.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, in version 3 of the
+ * License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses>.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
+ * in the VirtualBox distribution, in which case the provisions of the
+ * CDDL are applicable instead of those of the GPL.
+ *
+ * You may elect to license modified versions of this file under the
+ * terms and conditions of either the GPL or the CDDL or both.
+ *
+ * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
+ */
+
+#include <iprt/stdint.h>
+#include <iprt/uint64.h>
+
+int64_t __divmoddi4(int64_t i64A, int64_t i64B, int64_t *pi64R);
+uint64_t __udivmoddi4(uint64_t u64A, uint64_t u64B, uint64_t *pu64R);
+
+/**
+ * __divmoddi4() implementation to satisfy external references from 32-bit code
+ * generated by gcc-7 or later (more likely with gcc-11).
+ *
+ * @param   i64A        The divident value.
+ * @param   i64B        The divisor value.
+ * @param   pi64R       A pointer to the reminder. May be NULL.
+ * @returns i64A / i64B
+ */
+int64_t __divmoddi4(int64_t i64A, int64_t i64B, int64_t *pi64R)
+{
+    int64_t i64Ret;
+    if (i64A >= 0)
+    {
+        /* Dividing two non-negative numbers is the same as unsigned division. */
+        if (i64B >= 0)
+            i64Ret = (int64_t)__udivmoddi4((uint64_t)i64A, (uint64_t)i64B, (uint64_t *)pi64R);
+        /* Dividing a non-negative number by a negative one yields a negative
+           result and positive remainder. */
+        else
+            i64Ret = -(int64_t)__udivmoddi4((uint64_t)i64A, (uint64_t)-i64B, (uint64_t *)pi64R);
+    }
+    else
+    {
+        uint64_t u64R;
+
+        /* Dividing a negative number by a non-negative one yields a negative
+           result and negative remainder. */
+        if (i64B >= 0)
+            i64Ret = -(int64_t)__udivmoddi4((uint64_t)-i64A, (uint64_t)i64B, &u64R);
+        /* Dividing two negative numbers yields a positive result and a
+           negative remainder. */
+        else
+            i64Ret = (int64_t)__udivmoddi4((uint64_t)-i64A, (uint64_t)-i64B, &u64R);
+
+        if (pi64R)
+            *pi64R = -(int64_t)u64R;
+    }
+
+    return i64Ret;
+}
+