X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fthreads%2Fstart.S;h=68c604cc276b33a6701dab250d16784de3d45bd0;hb=19becec31c5704572a3575336c57364d72fd572b;hp=df63f8595abec0bdfe08835706ce64f4ad695d5d;hpb=dfb64e1c2e16f8e5183de565bd4819d875379cee;p=pintos-anon

diff --git a/src/threads/start.S b/src/threads/start.S
index df63f85..68c604c 100644
--- a/src/threads/start.S
+++ b/src/threads/start.S
@@ -4,10 +4,16 @@
 #### so that this module appears at the very beginning of the kernel
 #### image, and then using that as the entry point.
 
-.globl start
 .section .start
+	
+.globl start
+.func start
+	# Terminate the backtrace that debug_backtrace() would output.
+	movl $0, %ebp
 
+	# Call main.
 start:	call main
 
-	# If main returns, spin.
+	# main() should not return, but if it does, spin.
 1:	jmp 1b
+.endfunc