Initial KLEE checkin.

 - Lots more tweaks, documentation, and web page content is needed,
   but this should compile & work on OS X & Linux.


git-svn-id: https://llvm.org/svn/llvm-project/klee/trunk@72205 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 49 insertions, 0 deletions

diff --git a/runtime/klee-libc/__cxa_atexit.c b/runtime/klee-libc/__cxa_atexit.c
new file mode 100644
index 00000000..e7982848
--- /dev/null
+++ b/runtime/klee-libc/__cxa_atexit.c
@@ -0,0 +1,49 @@
+//===-- __cxa_atexit.c ----------------------------------------------------===//
+//
+//                     The KLEE Symbolic Virtual Machine
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "klee/klee.h"
+
+#define MAX_ATEXIT 128
+
+static struct {
+  void (*fn)(void*);
+  void *arg;
+  void *dso_handle;
+} AtExit[MAX_ATEXIT];
+static unsigned NumAtExit = 0;
+
+static void RunAtExit(void) __attribute__((destructor));
+static void RunAtExit(void) {
+  unsigned i;
+
+  for (i=0; i<NumAtExit; ++i)
+    AtExit[i].fn(AtExit[i].arg);
+}
+
+int __cxa_atexit(void (*fn)(void*),
+                 void *arg,
+                 void *dso_handle) {
+  klee_warning_once("FIXME: __cxa_atexit being ignored");
+  
+  /* Better to just report an error here than return 1 (the defined
+   * semantics).
+   */
+  if (NumAtExit == MAX_ATEXIT)
+    klee_report_error(__FILE__,
+                      __LINE__,
+                      "__cxa_atexit: no room in array!",
+                      "exec");
+  
+  AtExit[NumAtExit].fn = fn;
+  AtExit[NumAtExit].arg = arg;
+  ++NumAtExit;
+  
+  return 0;
+}
+