From 1547904b69dbdbc146f11c1edb15729c8f0c9edf Mon Sep 17 00:00:00 2001
From: Adam Green <adamgr@foo.bar>
Date: Thu, 21 Feb 2013 14:57:13 -0800
Subject: [PATCH] Add freespace GDB command to .gdbinit

This just reports how much space there is currently unused between the
top of the heap and the top of the stack.
---
 .gdbinit | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/.gdbinit b/.gdbinit
index 12bb52dff3..913e782eb1 100644
--- a/.gdbinit
+++ b/.gdbinit
@@ -57,6 +57,19 @@ end
 
 
 
+define freespace
+    printf "free space: %d bytes\n", (unsigned int)$sp - '_sbrk::heap'
+end
+
+document freespace
+Displays the free space.
+
+This is the amount of space between the heap and stack that is currently
+unused.
+end
+
+
+
 define maxstacksize
     set var $fill_curr=(unsigned int*)'_sbrk::heap'
     while ($fill_curr < $sp && *$fill_curr == 0xdeadbeef)