vendor/compiler-rt/compiler-rt-r224034

1 files changed, 43 insertions, 0 deletions

diff --git a/lib/builtins/arm/aeabi_div0.c b/lib/builtins/arm/aeabi_div0.c
new file mode 100644
index 0000000000000..ccc95fa5c12e6
--- /dev/null
+++ b/lib/builtins/arm/aeabi_div0.c
@@ -0,0 +1,43 @@
+/* ===-- aeabi_div0.c - ARM Runtime ABI support routines for compiler-rt ---===
+ *
+ *                     The LLVM Compiler Infrastructure
+ *
+ * This file is dual licensed under the MIT and the University of Illinois Open
+ * Source Licenses. See LICENSE.TXT for details.
+ *
+ * ===----------------------------------------------------------------------===
+ *
+ * This file implements the division by zero helper routines as specified by the
+ * Run-time ABI for the ARM Architecture.
+ *
+ * ===----------------------------------------------------------------------===
+ */
+
+/*
+ * RTABI 4.3.2 - Division by zero
+ *
+ * The *div0 functions:
+ * - Return the value passed to them as a parameter
+ * - Or, return a fixed value defined by the execution environment (such as 0)
+ * - Or, raise a signal (often SIGFPE) or throw an exception, and do not return
+ *
+ * An application may provide its own implementations of the *div0 functions to
+ * for a particular behaviour from the *div and *divmod functions called out of
+ * line.
+ */
+
+/* provide an unused declaration to pacify pendantic compilation */
+extern unsigned char declaration;
+
+#if defined(__ARM_EABI__)
+int __attribute__((weak)) __attribute__((visibility("hidden")))
+__aeabi_idiv0(int return_value) {
+  return return_value;
+}
+
+long long __attribute__((weak)) __attribute__((visibility("hidden")))
+__aeabi_ldiv0(long long return_value) {
+  return return_value;
+}
+#endif
+