cd $home
9fs sources
cp /n/sources/contrib/forsyth/9c.tgz .
tar xzvf 9c.tgz
9c=$home/9c

# for(i in `{du -a $9c | awk '{print $2}'}){if(test -f $i) echo $i}

# fix gc.h

sed 's/void	cas/void	casf/' < $9c/sys/src/cmd/9c/gc.h > $9c/sys/src/cmd/9c/gc.h.new && mv $9c/sys/src/cmd/9c/gc.h.new $9c/sys/src/cmd/9c/gc.h

# fix mkfile.proto

pattern='s/^OS=.*$/OS=5689qv/
	s/^CPUS=.*$/CPUS=arm amd64 386 power64 power mips/'

cp /sys/src/mkfile.proto $9c/sys/src
sed -e $pattern < $9c/sys/src/mkfile.proto > $9c/sys/src/mkfile.proto.new && mv $9c/sys/src/mkfile.proto.new $9c/sys/src/mkfile.proto

# fix old file

rm $9c/sys/src/libmp/power64/mkfile.old

# files and directories

newdir=(\
	/power64/include/ape\
	/sys/src/libc/power64\
	/sys/src/libmp/power64\
	/sys/src/libsec/power64\
	/sys/src/libmach/9c\
	/sys/src/cmd/9c\
	/sys/src/cmd/9l\
	/sys/src/cmd/9a\
)

newfile=(\
	/sys/src/libthread/power64.c\
	/sys/src/libthread/xincpower64.s\
)

file=(\
	/sys/src/mkfile.proto\
)

emptydir=(\
	/acme/bin/power64\
	/power64/bin/ape\
	/power64/bin/ape\
	/power64/bin/auth\
	/power64/bin/aux\
	/power64/bin/bitsy\
	/power64/bin/dial\
	/power64/bin/disk\
	/power64/bin/fossil\
	/power64/bin/fs\
	/power64/bin/games\
	/power64/bin/ip\
	/power64/bin/ip/httpd\
	/power64/bin/ndb\
	/power64/bin/replica\
	/power64/bin/upas\
	/power64/bin/usb\
	/power64/bin/venti\
	/power64/lib/ape\
)

# prepare

for(i in $newdir) {
	rm -rf $i
	mkdir $i
	bind -c $9c^$i $i
}

for(i in $newfile) {
	rm -f $i
	touch $i
	bind $9c^$i $i
}

for(i in $file) {
	bind $9c^$i $i
}

for(i in $emptydir) {
	rm -rf $i
	mkdir -p $i
}

# build power64

for(i in /sys/src/cmd/9?) {cd $i && mk install && mk clean}
cd /sys/src && objtype=power64 {mk nuke && mk install && mk clean}

# generate patch (personal use)

rm -f /tmp/9c.diff
for(i in $newdir $newfile $file)
	sdiff $i | night >> /tmp/9c.diff
mv /tmp/9c.diff /n/web/www.9legacy.org/9legacy/patch

# clean

for(i in $newdir $newfile $emptydir) {
	unmount $i
	rm -rf $i
}

# bind only

for(i in $newdir) {
	bind -c $nix^$i $i
}

for(i in  $newfile $file) {
	bind $nix^$i $i
}