Compile disassemblers only once

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

5 files changed, 74 insertions, 17 deletions

diff --git a/Makefile b/Makefile
index 2066c12dee..57c354dde4 100644
--- a/Makefile
+++ b/Makefile
@@ -80,9 +80,9 @@ include $(SRC_PATH)/Makefile.objs
 endif
 
 $(common-obj-y): $(GENERATED_HEADERS)
-$(filter %-softmmu,$(SUBDIR_RULES)): $(common-obj-y)
+$(filter %-softmmu,$(SUBDIR_RULES)): $(common-obj-y) subdir-libdis
 
-$(filter %-user,$(SUBDIR_RULES)): $(GENERATED_HEADERS) subdir-libuser
+$(filter %-user,$(SUBDIR_RULES)): $(GENERATED_HEADERS) subdir-libdis-user subdir-libuser
 
 ROMSUBDIR_RULES=$(patsubst %,romsubdir-%, $(ROMS))
 romsubdir-%:
@@ -152,7 +152,7 @@ clean:
 	rm -f slirp/*.o slirp/*.d audio/*.o audio/*.d block/*.o block/*.d net/*.o net/*.d
 	rm -f qemu-img-cmds.h
 	$(MAKE) -C tests clean
-	for d in $(ALL_SUBDIRS) libhw32 libhw64 libuser; do \
+	for d in $(ALL_SUBDIRS) libhw32 libhw64 libuser libdis libdis-user; do \
 	if test -d $$d; then $(MAKE) -C $$d $@ || exit 1; fi; \
         done
 
@@ -161,7 +161,7 @@ distclean: clean
 	rm -f config-all-devices.mak
 	rm -f roms/seabios/config.mak roms/vgabios/config.mak
 	rm -f qemu-{doc,tech}.{info,aux,cp,dvi,fn,info,ky,log,pdf,pg,toc,tp,vr}
-	for d in $(TARGET_DIRS) libhw32 libhw64 libuser; do \
+	for d in $(TARGET_DIRS) libhw32 libhw64 libuser libdis libdis-user; do \
 	rm -rf $$d || exit 1 ; \
         done
 
diff --git a/Makefile.dis b/Makefile.dis
new file mode 100644
index 0000000000..3e1fcaf4b7
--- /dev/null
+++ b/Makefile.dis
@@ -0,0 +1,23 @@
+# Makefile for disassemblers.
+
+include ../config-host.mak
+include config.mak
+include $(SRC_PATH)/rules.mak
+
+.PHONY: all
+
+$(call set-vpath, $(SRC_PATH))
+
+QEMU_CFLAGS+=-I..
+
+include $(SRC_PATH)/Makefile.objs
+
+all: $(libdis-y)
+# Dummy command so that make thinks it has done something
+	@true
+
+clean:
+	rm -f *.o *.d *.a *~
+
+# Include automatically generated dependency files
+-include $(wildcard *.d */*.d)
diff --git a/Makefile.objs b/Makefile.objs
index dcb5a929a9..6594eda44d 100644
--- a/Makefile.objs
+++ b/Makefile.objs
@@ -154,3 +154,21 @@ hw-obj-$(CONFIG_ESP) += esp.o
 
 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-$(CONFIG_SPARC_DIS) += sparc-dis.o
diff --git a/Makefile.target b/Makefile.target
index 0c282154d5..0d8a92770b 100644
--- a/Makefile.target
+++ b/Makefile.target
@@ -55,20 +55,7 @@ endif
 libobj-$(CONFIG_NEED_MMU) += mmu.o
 libobj-$(TARGET_ARM) += neon_helper.o iwmmxt_helper.o
 
-# NOTE: the disassembler code is only needed for debugging
 libobj-y += disas.o
-libobj-$(CONFIG_ALPHA_DIS) += alpha-dis.o
-libobj-$(CONFIG_ARM_DIS) += arm-dis.o
-libobj-$(CONFIG_CRIS_DIS) += cris-dis.o
-libobj-$(CONFIG_HPPA_DIS) += hppa-dis.o
-libobj-$(CONFIG_I386_DIS) += i386-dis.o
-libobj-$(CONFIG_M68K_DIS) += m68k-dis.o
-libobj-$(CONFIG_MICROBLAZE_DIS) += microblaze-dis.o
-libobj-$(CONFIG_MIPS_DIS) += mips-dis.o
-libobj-$(CONFIG_PPC_DIS) += ppc-dis.o
-libobj-$(CONFIG_S390_DIS) += s390-dis.o
-libobj-$(CONFIG_SH4_DIS) += sh4-dis.o
-libobj-$(CONFIG_SPARC_DIS) += sparc-dis.o
 
 $(libobj-y): $(GENERATED_HEADERS)
 
@@ -116,6 +103,7 @@ obj-m68k-y += m68k-sim.o m68k-semi.o
 $(obj-y) $(obj-$(TARGET_BASE_ARCH)-y): $(GENERATED_HEADERS)
 
 obj-y += $(addprefix ../libuser/, $(user-obj-y))
+obj-y += $(addprefix ../libdis-user/, $(libdis-y))
 obj-y += $(libobj-y)
 
 endif #CONFIG_LINUX_USER
@@ -142,6 +130,7 @@ obj-i386-y += ioport-user.o
 $(obj-y) $(obj-$(TARGET_BASE_ARCH)-y): $(GENERATED_HEADERS)
 
 obj-y += $(addprefix ../libuser/, $(user-obj-y))
+obj-y += $(addprefix ../libdis-user/, $(libdis-y))
 obj-y += $(libobj-y)
 
 endif #CONFIG_DARWIN_USER
@@ -163,6 +152,7 @@ obj-i386-y += ioport-user.o
 $(obj-y) $(obj-$(TARGET_BASE_ARCH)-y): $(GENERATED_HEADERS)
 
 obj-y += $(addprefix ../libuser/, $(user-obj-y))
+obj-y += $(addprefix ../libdis-user/, $(libdis-y))
 obj-y += $(libobj-y)
 
 endif #CONFIG_BSD_USER
@@ -329,6 +319,7 @@ monitor.o: qemu-monitor.h
 $(obj-y) $(obj-$(TARGET_BASE_ARCH)-y): $(GENERATED_HEADERS)
 
 obj-y += $(addprefix ../, $(common-obj-y))
+obj-y += $(addprefix ../libdis/, $(libdis-y))
 obj-y += $(libobj-y)
 obj-y += $(addprefix $(HWDIR)/, $(hw-obj-y))
 
diff --git a/configure b/configure
index d728799d8b..0182b95a6d 100755
--- a/configure
+++ b/configure
@@ -2273,6 +2273,13 @@ if test -f ${config_host_ld}~ ; then
   fi
 fi
 
+for d in libdis libdis-user; do
+    mkdir -p $d
+    rm -f $d/Makefile
+    ln -s $source_path/Makefile.dis $d/Makefile
+    echo > $d/config.mak
+done
+
 for target in $target_list; do
 target_dir="$target"
 config_target_mak=$target_dir/config-target.mak
@@ -2563,43 +2570,61 @@ fi
 cflags="-I\$(SRC_PATH)/tcg $cflags"
 cflags="-I\$(SRC_PATH)/fpu $cflags"
 
+if test "$target_user_only" = "yes" ; then
+    libdis_config_mak=libdis-user/config.mak
+else
+    libdis_config_mak=libdis/config.mak
+fi
+
 for i in $ARCH $TARGET_BASE_ARCH ; do
   case "$i" in
   alpha)
     echo "CONFIG_ALPHA_DIS=y"  >> $config_target_mak
+    echo "CONFIG_ALPHA_DIS=y"  >> $libdis_config_mak
   ;;
   arm)
     echo "CONFIG_ARM_DIS=y"  >> $config_target_mak
+    echo "CONFIG_ARM_DIS=y"  >> $libdis_config_mak
   ;;
   cris)
     echo "CONFIG_CRIS_DIS=y"  >> $config_target_mak
+    echo "CONFIG_CRIS_DIS=y"  >> $libdis_config_mak
   ;;
   hppa)
     echo "CONFIG_HPPA_DIS=y"  >> $config_target_mak
+    echo "CONFIG_HPPA_DIS=y"  >> $libdis_config_mak
   ;;
   i386|x86_64)
     echo "CONFIG_I386_DIS=y"  >> $config_target_mak
+    echo "CONFIG_I386_DIS=y"  >> $libdis_config_mak
   ;;
   m68k)
     echo "CONFIG_M68K_DIS=y"  >> $config_target_mak
+    echo "CONFIG_M68K_DIS=y"  >> $libdis_config_mak
   ;;
   microblaze)
     echo "CONFIG_MICROBLAZE_DIS=y"  >> $config_target_mak
+    echo "CONFIG_MICROBLAZE_DIS=y"  >> $libdis_config_mak
   ;;
   mips*)
     echo "CONFIG_MIPS_DIS=y"  >> $config_target_mak
+    echo "CONFIG_MIPS_DIS=y"  >> $libdis_config_mak
   ;;
   ppc*)
     echo "CONFIG_PPC_DIS=y"  >> $config_target_mak
+    echo "CONFIG_PPC_DIS=y"  >> $libdis_config_mak
   ;;
   s390*)
     echo "CONFIG_S390_DIS=y"  >> $config_target_mak
+    echo "CONFIG_S390_DIS=y"  >> $libdis_config_mak
   ;;
   sh4)
     echo "CONFIG_SH4_DIS=y"  >> $config_target_mak
+    echo "CONFIG_SH4_DIS=y"  >> $libdis_config_mak
   ;;
   sparc*)
     echo "CONFIG_SPARC_DIS=y"  >> $config_target_mak
+    echo "CONFIG_SPARC_DIS=y"  >> $libdis_config_mak
   ;;
   esac
 done