From a6b264b51d4fa786d9df659621fc1ffad1fdc5d0 Mon Sep 17 00:00:00 2001
From: Alexey Samsonov <samsonov@google.com>
Date: Fri, 14 Feb 2014 09:20:33 +0000
Subject: Move original compiler-rt functions (libgcc replacement) to
 lib/builtins directory

llvm-svn: 201393
---
 compiler-rt/lib/builtins/int_util.c | 61 +++++++++++++++++++++++++++++++++++++
 1 file changed, 61 insertions(+)
 create mode 100644 compiler-rt/lib/builtins/int_util.c

(limited to 'compiler-rt/lib/builtins/int_util.c')

diff --git a/compiler-rt/lib/builtins/int_util.c b/compiler-rt/lib/builtins/int_util.c
new file mode 100644
index 00000000000..323e46179e6
--- /dev/null
+++ b/compiler-rt/lib/builtins/int_util.c
@@ -0,0 +1,61 @@
+/* ===-- int_util.c - Implement internal utilities --------------------------===
+ *
+ *                     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.
+ *
+ * ===----------------------------------------------------------------------===
+ */
+
+#include "int_util.h"
+#include "int_lib.h"
+
+/* NOTE: The definitions in this file are declared weak because we clients to be
+ * able to arbitrarily package individual functions into separate .a files. If
+ * we did not declare these weak, some link situations might end up seeing
+ * duplicate strong definitions of the same symbol.
+ *
+ * We can't use this solution for kernel use (which may not support weak), but
+ * currently expect that when built for kernel use all the functionality is
+ * packaged into a single library.
+ */
+
+#ifdef KERNEL_USE
+
+extern void panic(const char *, ...) __attribute__((noreturn));
+#ifndef _WIN32
+__attribute__((visibility("hidden")))
+#endif
+void compilerrt_abort_impl(const char *file, int line, const char *function) {
+  panic("%s:%d: abort in %s", file, line, function);
+}
+
+#elif __APPLE__
+
+/* from libSystem.dylib */
+extern void __assert_rtn(const char *func, const char *file, 
+                     int line, const char * message) __attribute__((noreturn));
+
+#ifndef _WIN32
+__attribute__((weak))
+__attribute__((visibility("hidden")))
+#endif
+void compilerrt_abort_impl(const char *file, int line, const char *function) {
+  __assert_rtn(function, file, line, "libcompiler_rt abort");
+}
+
+#else
+
+/* Get the system definition of abort() */
+#include <stdlib.h>
+
+#ifndef _WIN32
+__attribute__((weak))
+__attribute__((visibility("hidden")))
+#endif
+void compilerrt_abort_impl(const char *file, int line, const char *function) {
+  abort();
+}
+
+#endif
-- 
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