From 8477dec61fd9b1b24f22cc486509d4bc900455bf Mon Sep 17 00:00:00 2001
From: Till Straumann <strauman@slac.stanford.edu>
Date: Mon, 8 Sep 2014 22:31:11 -0700
Subject: [PATCH]  - added windows versions of osdBackTrace.c, osdFindAddr.c;
 the latter    does not implement addr->symbol conversion yet.

---
 src/libCom/osi/os/WIN32/osdBackTrace.c | 24 ++++++++++++++++++++
 src/libCom/osi/os/WIN32/osdFindAddr.c  | 31 ++++++++++++++++++++++++++
 2 files changed, 55 insertions(+)
 create mode 100644 src/libCom/osi/os/WIN32/osdBackTrace.c
 create mode 100644 src/libCom/osi/os/WIN32/osdFindAddr.c

diff --git a/src/libCom/osi/os/WIN32/osdBackTrace.c b/src/libCom/osi/os/WIN32/osdBackTrace.c
new file mode 100644
index 000000000..4afd8a4f1
--- /dev/null
+++ b/src/libCom/osi/os/WIN32/osdBackTrace.c
@@ -0,0 +1,24 @@
+/* 
+ * Copyright: Stanford University / SLAC National Laboratory.
+ *
+ * EPICS BASE is distributed subject to a Software License Agreement found
+ * in file LICENSE that is included with this distribution. 
+ *
+ * Author: Till Straumann <strauman@slac.stanford.edu>, 2011
+ */ 
+
+#include <Windows.h>
+#include <stdio.h>
+
+#define epicsExportSharedSymbols
+#include "epicsStackTracePvt.h"
+
+int epicsBackTrace(void **buf, int buf_sz)
+{
+	/* Docs say that (for some windows versions) the sum of
+	 * skipped + captured frames must be less than 63
+	 */
+	if ( buf_sz >= 63 )
+		buf_sz = 62;
+	return CaptureStackBackTrace(0, buf_sz, buf, 0);
+}
diff --git a/src/libCom/osi/os/WIN32/osdFindAddr.c b/src/libCom/osi/os/WIN32/osdFindAddr.c
new file mode 100644
index 000000000..a39654188
--- /dev/null
+++ b/src/libCom/osi/os/WIN32/osdFindAddr.c
@@ -0,0 +1,31 @@
+/* 
+ * Copyright: Stanford University / SLAC National Laboratory.
+ *
+ * EPICS BASE is distributed subject to a Software License Agreement found
+ * in file LICENSE that is included with this distribution. 
+ *
+ * Author: Till Straumann <strauman@slac.stanford.edu>, 2011
+ */ 
+
+#define epicsExportSharedSymbols
+#include "epicsStackTracePvt.h"
+#include "epicsStackTrace.h"
+
+int epicsFindAddr(void *addr, epicsSymbol *sym_p)
+{
+	return -1;
+}
+
+int epicsStackTraceGetFeatures(void)
+{
+void *test[10];
+
+	/* If frame-pointer optimization is on then CaptureStackBackTrace
+	 * does not work. Make sure all EPICS is built with -Oy-
+	 */
+	if ( 0 == epicsBackTrace(test, sizeof(test)/sizeof(test[0])) )
+		return 0;
+
+	/* address->symbol conversion not implemented (yet) */
+	return EPICS_STACKTRACE_ADDRESSES;
+}