From: bdemsky <bdemsky@uci.edu>
Date: Fri, 16 Dec 2016 20:18:38 +0000 (-0800)
Subject: update debugging information in readme file
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=9031836d066385fcd527a2e6dc7e065473096f10;p=satcheck.git

update debugging information in readme file
---

diff --git a/doc/README.txt b/doc/README.txt
index 268b9af..ddb8763 100644
--- a/doc/README.txt
+++ b/doc/README.txt
@@ -27,3 +27,18 @@ Run the model checker.
 
 Use dot (from graphviz) to convert the outputted dot files into the
 format of your choice.
+
+III. Using the debugger (gdb).
+
+You can launch the debugger by passing in the gdb option to run.sh (or
+you can lok at run.sh to see how to launch the model checker from
+within a debugger).  Since we trap SIGSEGV to detect pages that we
+need to update, you have to disable stopping on SIGSEGV.  To do this,
+use the following commands:
+
+To run inside MacOS under gdb you need (lldb won't work as far as I know):
+set dont-handle-bad-access 1 (sometime not necessary)
+handle SIGBUS nostop noprint
+
+To run in Linux under gdb, use:
+handle SIGSEGV nostop noprint