qom: Add QOM support to user emulators

Link the Object base class and the module infrastructure for class
registration. Introduce $(universal-obj-y) for objects that are more
common than $(common-obj-y), so that those only get built once.

Call QOM module init for type registration.

Signed-off-by: Andreas Färber <afaerber@suse.de>
Cc: Anthony Liguori <anthony@codemonkey.ws>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

Makefile

@@ -98,12 +98,12 @@ ifneq ($(wildcard config-host.mak),)
 include $(SRC_PATH)/Makefile.objs
 endif
 
-$(common-obj-y): $(GENERATED_HEADERS)
+$(universal-obj-y) $(common-obj-y): $(GENERATED_HEADERS)
 subdir-libcacard: $(oslib-obj-y) $(trace-obj-y) qemu-timer-common.o
 
-$(filter %-softmmu,$(SUBDIR_RULES)): $(trace-obj-y) $(common-obj-y) subdir-libdis
+$(filter %-softmmu,$(SUBDIR_RULES)): $(universal-obj-y) $(trace-obj-y) $(common-obj-y) subdir-libdis
 
-$(filter %-user,$(SUBDIR_RULES)): $(GENERATED_HEADERS) $(trace-obj-y) subdir-libdis-user subdir-libuser
+$(filter %-user,$(SUBDIR_RULES)): $(GENERATED_HEADERS) $(universal-obj-y) $(trace-obj-y) subdir-libdis-user subdir-libuser
 
 ROMSUBDIR_RULES=$(patsubst %,romsubdir-%, $(ROMS))
 romsubdir-%:

Makefile.objs

@@ -1,9 +1,22 @@
+#######################################################################
+# Target-independent parts used in system and user emulation
+universal-obj-y =
+
 #######################################################################
 # QObject
 qobject-obj-y = qint.o qstring.o qdict.o qlist.o qfloat.o qbool.o
 qobject-obj-y += qjson.o json-lexer.o json-streamer.o json-parser.o
 qobject-obj-y += qerror.o error.o qemu-error.o
 
+universal-obj-y += $(qobject-obj-y)
+
+#######################################################################
+# QOM
+include $(SRC_PATH)/qom/Makefile
+qom-obj-y = $(addprefix qom/, $(qom-y))
+
+universal-obj-y += $(qom-obj-y)
+
 #######################################################################
 # oslib-obj-y is code depending on the OS (win32 vs posix)
 oslib-obj-y = osdep.o
@@ -80,7 +93,6 @@ fsdev-obj-$(CONFIG_VIRTFS) += $(addprefix fsdev/, $(fsdev-nested-y))
 
 common-obj-y = $(block-obj-y) blockdev.o
 common-obj-y += $(net-obj-y)
-common-obj-y += $(qobject-obj-y)
 common-obj-$(CONFIG_LINUX) += $(fsdev-obj-$(CONFIG_LINUX))
 common-obj-y += readline.o console.o cursor.o
 common-obj-y += $(oslib-obj-y)
@@ -128,9 +140,6 @@ common-obj-$(CONFIG_WIN32) += version.o
 
 common-obj-$(CONFIG_SPICE) += ui/spice-core.o ui/spice-input.o ui/spice-display.o spice-qemu-char.o
 
-include $(SRC_PATH)/qom/Makefile
-common-obj-y += $(addprefix qom/, $(qom-y))
-
 audio-obj-y = audio.o noaudio.o wavaudio.o mixeng.o
 audio-obj-$(CONFIG_SDL) += sdlaudio.o
 audio-obj-$(CONFIG_OSS) += ossaudio.o
@@ -186,6 +195,8 @@ user-obj-y =
 user-obj-y += envlist.o path.o
 user-obj-y += tcg-runtime.o host-utils.o
 user-obj-y += cutils.o cache-utils.o
+user-obj-y += module.o
+user-obj-y += qemu-user.o
 user-obj-y += $(trace-obj-y)
 
 ######################################################################
@@ -422,9 +433,11 @@ qapi-nested-y += qmp-output-visitor.o qmp-registry.o qmp-dispatch.o
 qapi-nested-y += string-input-visitor.o string-output-visitor.o
 qapi-obj-y = $(addprefix qapi/, $(qapi-nested-y))
 
-common-obj-y += qmp-marshal.o qapi-visit.o qapi-types.o $(qapi-obj-y)
+common-obj-y += qmp-marshal.o qapi-visit.o qapi-types.o
 common-obj-y += qmp.o hmp.o
 
+universal-obj-y += $(qapi-obj-y)
+
 ######################################################################
 # guest agent
 

Makefile.target

@@ -136,6 +136,7 @@ obj-m68k-y += m68k-sim.o m68k-semi.o
 
 $(obj-y) $(obj-$(TARGET_BASE_ARCH)-y): $(GENERATED_HEADERS)
 
+obj-y += $(addprefix ../, $(universal-obj-y))
 obj-y += $(addprefix ../libuser/, $(user-obj-y))
 obj-y += $(addprefix ../libdis-user/, $(libdis-y))
 obj-y += $(libobj-y)
@@ -163,6 +164,7 @@ obj-i386-y += ioport-user.o
 
 $(obj-y) $(obj-$(TARGET_BASE_ARCH)-y): $(GENERATED_HEADERS)
 
+obj-y += $(addprefix ../, $(universal-obj-y))
 obj-y += $(addprefix ../libuser/, $(user-obj-y))
 obj-y += $(addprefix ../libdis-user/, $(libdis-y))
 obj-y += $(libobj-y)
@@ -185,6 +187,7 @@ obj-i386-y += ioport-user.o
 
 $(obj-y) $(obj-$(TARGET_BASE_ARCH)-y): $(GENERATED_HEADERS)
 
+obj-y += $(addprefix ../, $(universal-obj-y))
 obj-y += $(addprefix ../libuser/, $(user-obj-y))
 obj-y += $(addprefix ../libdis-user/, $(libdis-y))
 obj-y += $(libobj-y)
@@ -406,6 +409,7 @@ monitor.o: hmp-commands.h qmp-commands-old.h
 
 $(obj-y) $(obj-$(TARGET_BASE_ARCH)-y): $(GENERATED_HEADERS)
 
+obj-y += $(addprefix ../, $(universal-obj-y))
 obj-y += $(addprefix ../, $(common-obj-y))
 obj-y += $(addprefix ../libdis/, $(libdis-y))
 obj-y += $(libobj-y)

Makefile.user

@@ -9,6 +9,7 @@ include $(SRC_PATH)/rules.mak
 $(call set-vpath, $(SRC_PATH))
 
 QEMU_CFLAGS+=-I..
+QEMU_CFLAGS += -I$(SRC_PATH)/include
 
 include $(SRC_PATH)/Makefile.objs
 

bsd-user/main.c

@@ -748,6 +748,8 @@ int main(int argc, char **argv)
     if (argc <= 1)
         usage();
 
+    module_call_init(MODULE_INIT_QOM);
+
     if ((envlist = envlist_create()) == NULL) {
         (void) fprintf(stderr, "Unable to allocate envlist\n");
         exit(1);

darwin-user/main.c

@@ -28,6 +28,7 @@
 #include <sys/mman.h>
 
 #include "qemu.h"
+#include "qemu-common.h"
 
 #define DEBUG_LOGFILE "/tmp/qemu.log"
 
@@ -749,6 +750,8 @@ int main(int argc, char **argv)
     if (argc <= 1)
         usage();
 
+    module_call_init(MODULE_INIT_QOM);
+
     optind = 1;
     for(;;) {
         if (optind >= argc)

linux-user/main.c

@@ -3285,6 +3285,8 @@ int main(int argc, char **argv, char **envp)
     int i;
     int ret;
 
+    module_call_init(MODULE_INIT_QOM);
+
     qemu_cache_utils_init(envp);
 
     if ((envlist = envlist_create()) == NULL) {

qemu-user.c

@@ -0,0 +1,37 @@
+/*
+ * Stubs for QEMU user emulation
+ *
+ * Copyright (c) 2012 SUSE LINUX Products GmbH
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see
+ * <http://www.gnu.org/licenses/gpl-2.0.html>
+ */
+
+#include "qemu-common.h"
+#include "monitor.h"
+
+Monitor *cur_mon;
+
+int monitor_cur_is_qmp(void)
+{
+    return 0;
+}
+
+void monitor_vprintf(Monitor *mon, const char *fmt, va_list ap)
+{
+}
+
+void monitor_set_error(Monitor *mon, QError *qerror)
+{
+}