From 568bbae801dcde879a3738d482ed2b0570875c6c Mon Sep 17 00:00:00 2001
From: Silas Boyd-Wickizer <sbw@wether.csail.mit.edu>
Date: Tue, 15 Sep 2009 17:15:36 -0400
Subject: qemu-gdb target and script

---
 Makefile | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

(limited to 'Makefile')

diff --git a/Makefile b/Makefile
index 8fe23b7..52190a5 100644
--- a/Makefile
+++ b/Makefile
@@ -138,11 +138,22 @@ bochs : fs.img xv6.img
 	if [ ! -e .bochsrc ]; then ln -s dot-bochsrc .bochsrc; fi
 	bochs -q
 
+# try to generate a unique GDB port
+GDBPORT = $(shell expr `id -u` % 5000 + 25000)
+QEMUOPTS = -smp 2 -hdb fs.img xv6.img
+
 qemu: fs.img xv6.img
-	qemu -parallel stdio -smp 2 -hdb fs.img xv6.img
+	qemu -parallel mon:stdio $(QEMUOPTS)
 
 qemutty: fs.img xv6.img
-	qemu -nographic -smp 2 -hdb fs.img xv6.img
+	qemu -nographic $(QEMUOPTS)
+
+.gdbinit: .gdbinit.tmpl
+	sed "s/localhost:1234/localhost:$(GDBPORT)/" < $^ > $@
+
+qemu-gdb: fs.img xv6.img .gdbinit
+	@echo "*** Now run 'gdb'." 1>&2
+	qemu -parallel mon:stdio $(QEMUOPTS) -s -S -p $(GDBPORT)
 
 # CUT HERE
 # prepare dist for students
-- 
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