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.
Smoothieware · 1547904b69dbdbc146f11c1edb15729c8f0c9edf · adamgreen committed Feb 21, 2013 · Feb 21, 2013 · 1547904
1 parent c4f2f9c
commit 1547904b69dbdbc146f11c1edb15729c8f0c9edf
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Showing with 13 additions and 0 deletions.

+13 −0 .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)