Compile disassemblers only once

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
diff --git a/Makefile.objs b/Makefile.objs
index dcb5a92..6594eda 100644
--- a/Makefile.objs
+++ b/Makefile.objs
@@ -154,3 +154,21 @@
 
 hw-obj-y += dma-helpers.o sysbus.o isa-bus.o
 hw-obj-$(CONFIG_QDEV_ADDR) += qdev-addr.o
+
+######################################################################
+# libdis
+# NOTE: the disassembler code is only needed for debugging
+
+libdis-y =
+libdis-$(CONFIG_ALPHA_DIS) += alpha-dis.o
+libdis-$(CONFIG_ARM_DIS) += arm-dis.o
+libdis-$(CONFIG_CRIS_DIS) += cris-dis.o
+libdis-$(CONFIG_HPPA_DIS) += hppa-dis.o
+libdis-$(CONFIG_I386_DIS) += i386-dis.o
+libdis-$(CONFIG_M68K_DIS) += m68k-dis.o
+libdis-$(CONFIG_MICROBLAZE_DIS) += microblaze-dis.o
+libdis-$(CONFIG_MIPS_DIS) += mips-dis.o
+libdis-$(CONFIG_PPC_DIS) += ppc-dis.o
+libdis-$(CONFIG_S390_DIS) += s390-dis.o
+libdis-$(CONFIG_SH4_DIS) += sh4-dis.o
+libdis-$(CONFIG_SPARC_DIS) += sparc-dis.o