acpi: filter based on CONFIG_ACPI_X86 rather than TARGET

Copy the mechanism of hw/smbios/smbios-stub.c to implement an ACPI-stub
instead, so that -acpitable can be later extended to ARM.
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

arch_init.c

@@ -234,19 +234,6 @@ void audio_init(void)
     }
 }
 
-void do_acpitable_option(const QemuOpts *opts)
-{
-#ifdef TARGET_I386
-    Error *err = NULL;
-
-    acpi_table_add(opts, &err);
-    if (err) {
-        error_reportf_err(err, "Wrong acpi table provided: ");
-        exit(1);
-    }
-#endif
-}
-
 int kvm_available(void)
 {
 #ifdef CONFIG_KVM

hw/Makefile.objs

 devices-dirs-$(call land, $(CONFIG_VIRTIO),$(call land,$(CONFIG_VIRTFS),$(CONFIG_PCI))) += 9pfs/
-devices-dirs-$(CONFIG_ACPI) += acpi/
+devices-dirs-$(CONFIG_SOFTMMU) += acpi/
 devices-dirs-$(CONFIG_SOFTMMU) += adc/
 devices-dirs-$(CONFIG_SOFTMMU) += audio/
 devices-dirs-$(CONFIG_SOFTMMU) += block/

hw/acpi/Makefile.objs

+ifeq ($(CONFIG_ACPI),y)
 common-obj-$(CONFIG_ACPI_X86) += core.o piix4.o pcihp.o
 common-obj-$(CONFIG_ACPI_X86_ICH) += ich9.o tco.o
 common-obj-$(CONFIG_ACPI_CPU_HOTPLUG) += cpu_hotplug.o
 common-obj-$(CONFIG_ACPI_MEMORY_HOTPLUG) += memory_hotplug.o
 common-obj-$(CONFIG_ACPI_CPU_HOTPLUG) += cpu.o
 common-obj-$(CONFIG_ACPI_NVDIMM) += nvdimm.o
+common-obj-$(call lnot,$(CONFIG_ACPI_X86)) += acpi-stub.o
 
 common-obj-y += acpi_interface.o
 common-obj-y += bios-linker-loader.o
@@ -11,4 +13,7 @@ common-obj-y += aml-build.o
 
 common-obj-$(CONFIG_IPMI) += ipmi.o
 common-obj-$(call lnot,$(CONFIG_IPMI)) += ipmi-stub.o
-common-obj-$(CONFIG_ALL) += ipmi-stub.o
+else
+common-obj-y += acpi-stub.o
+endif
+common-obj-$(CONFIG_ALL) += acpi-stub.o ipmi-stub.o

hw/acpi/acpi-stub.c

+/*
+ * ACPI stubs for platforms that don't support ACPI.
+ *
+ * Copyright (c) 2006 Fabrice Bellard
+ * Copyright (c) 2016 Red Hat, Inc.
+ *
+ * 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/>.
+ */
+
+#include "qemu/osdep.h"
+#include "qapi/qmp/qerror.h"
+#include "qmp-commands.h"
+#include "hw/acpi/acpi.h"
+
+void acpi_table_add(const QemuOpts *opts, Error **errp)
+{
+    error_setg(errp, QERR_UNSUPPORTED);
+}

include/sysemu/arch_init.h

@@ -28,7 +28,6 @@ enum {
 extern const uint32_t arch_type;
 
 void select_soundhw(const char *optarg);
-void do_acpitable_option(const QemuOpts *opts);
 void audio_init(void);
 int kvm_available(void);
 int xen_available(void);

vl.c

@@ -65,6 +65,7 @@ int main(int argc, char **argv)
 #include "hw/bt.h"
 #include "sysemu/watchdog.h"
 #include "hw/smbios/smbios.h"
+#include "hw/acpi/acpi.h"
 #include "hw/xen/xen.h"
 #include "hw/qdev.h"
 #include "hw/loader.h"
@@ -3657,7 +3658,7 @@ int main(int argc, char **argv, char **envp)
                 if (!opts) {
                     exit(1);
                 }
-                do_acpitable_option(opts);
+                acpi_table_add(opts, &error_fatal);
                 break;
             case QEMU_OPTION_smbios:
                 opts = qemu_opts_parse_noisily(qemu_find_opts("smbios"),