[tools] Add remote option to qemu.sh

I discovered that QEMU has a "remote" option to the `-vnc` switch, which
causes it to reverse-connect to a VNC client on start. I've added this
into qemu.sh as the -r option.

qemu.sh

@@ -13,31 +13,38 @@ cpu="Broadwell,+pdpe1gb"
 smp=4
 
 while true; do
-	case "$1" in
+    case "$1" in
-		-b | --debugboot)
+        -b | --debugboot)
-			debug="-s -S"
+            debug="-s -S"
-			debugtarget="${build}/boot/boot.efi"
+            debugtarget="${build}/boot/boot.efi"
             shift
-			;;
+            ;;
-		-d | --debug)
+        -d | --debug)
-			debug="-s -S"
+            debug="-s -S"
             isaexit=""
             shift
-			;;
+            ;;
-		-g | --gfx)
+        -g | --gfx)
-			gfx=""
+            gfx=""
-			vga=""
+            vga=""
             shift
-			;;
+            ;;
-		-v | --vga)
+        -v | --vga)
-			vga=""
+            vga=""
             shift
-			;;
+            ;;
-		-k | --kvm)
+        -r | --remote)
-			kvm="-enable-kvm"
-			cpu="host"
             shift
-			;;
+            vnchost="${1:-${VNCHOST:-localhost}}"
+            gfx="-vnc ${vnchost}:7000,reverse"
+            vga=""
+            shift
+            ;;
+        -k | --kvm)
+            kvm="-enable-kvm"
+            cpu="host"
+            shift
+            ;;
         -c | --cpus)
             smp=$2
             shift 2
@@ -46,53 +53,54 @@ while true; do
             log="-d mmu,int,guest_errors -D jsix.log"
             shift
             ;;
-		*)
+        *)
             if [ -d "$1" ]; then
                 build="$1"
                 shift
             fi
             break
-			;;
+            ;;
-	esac
+    esac
 done
 
 if [[ ! -c /dev/kvm ]]; then
-	kvm=""
+    kvm=""
 fi
 
 if ! ninja -C "${build}"; then
-	exit 1
+    exit 1
 fi
 
 if [[ -n $TMUX ]]; then
-	if [[ -n $debug ]]; then
+    if [[ -n $debug ]]; then
-		tmux split-window -h "gdb ${debugtarget}" &
+        tmux split-window -h "gdb ${debugtarget}" &
-	else
+    else
-		tmux split-window -h -l 80 "sleep 1; telnet localhost 45455" &
+        tmux split-window -h -l 80 "sleep 1; telnet localhost 45455" &
-		tmux last-pane
+        tmux last-pane
-		tmux split-window -l 10 "sleep 1; telnet localhost 45454" &
+        tmux split-window -l 10 "sleep 1; telnet localhost 45454" &
-	fi
+    fi
 elif [[ $DESKTOP_SESSION = "i3" ]]; then
-	if [[ -n $debug ]]; then
+    if [[ -n $debug ]]; then
-		i3-msg exec i3-sensible-terminal -- -e "gdb ${debugtarget}" &
+        i3-msg exec i3-sensible-terminal -- -e "gdb ${debugtarget}" &
-	else
+    else
-		i3-msg exec i3-sensible-terminal -- -e 'telnet localhost 45454' &
+        i3-msg exec i3-sensible-terminal -- -e 'telnet localhost 45454' &
-	fi
+    fi
 fi
 
 qemu-system-x86_64 \
-	-drive "if=pflash,format=raw,readonly,file=${assets}/ovmf/x64/ovmf_code.fd" \
+    -drive "if=pflash,format=raw,readonly,file=${assets}/ovmf/x64/ovmf_code.fd" \
-	-drive "if=pflash,format=raw,file=${build}/ovmf_vars.fd" \
+    -drive "if=pflash,format=raw,file=${build}/ovmf_vars.fd" \
-	-drive "format=raw,file=${build}/jsix.img" \
+    -drive "format=raw,file=${build}/jsix.img" \
-	-monitor telnet:localhost:45454,server,nowait \
+    -monitor telnet:localhost:45454,server,nowait \
-	-serial stdio \
+    -serial stdio \
-	-serial telnet:localhost:45455,server,nowait \
+    -serial telnet:localhost:45455,server,nowait \
-	-smp "${smp}" \
+    -smp "${smp}" \
-	-m 4096 \
+    -m 4096 \
-	-cpu "${cpu}" \
+    -cpu "${cpu}" \
-	-M q35 \
+    -M q35 \
-	-no-reboot \
+    -no-reboot \
-	$isaexit $log $gfx $vga $kvm $debug
+    -name "jsix" \
+    $isaexit $log $gfx $vga $kvm $debug
 
 ((result = ($? >> 1) - 1))
 exit $result