target/microblaze: Fill in VMStateDescription for cpu

Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

target/microblaze/cpu.c

@@ -26,7 +26,6 @@
 #include "cpu.h"
 #include "qemu/module.h"
 #include "hw/qdev-properties.h"
-#include "migration/vmstate.h"
 #include "exec/exec-all.h"
 #include "fpu/softfloat-helpers.h"
 
@@ -251,11 +250,6 @@ static void mb_cpu_initfn(Object *obj)
 #endif
 }
 
-static const VMStateDescription vmstate_mb_cpu = {
-    .name = "cpu",
-    .unmigratable = 1,
-};
-
 static Property mb_properties[] = {
     DEFINE_PROP_UINT32("base-vectors", MicroBlazeCPU, cfg.base_vectors, 0),
     DEFINE_PROP_BOOL("use-stack-protection", MicroBlazeCPU, cfg.stackprot,
@@ -335,8 +329,8 @@ static void mb_cpu_class_init(ObjectClass *oc, void *data)
 #ifndef CONFIG_USER_ONLY
     cc->do_transaction_failed = mb_cpu_transaction_failed;
     cc->get_phys_page_debug = mb_cpu_get_phys_page_debug;
-#endif
     dc->vmsd = &vmstate_mb_cpu;
+#endif
     device_class_set_props(dc, mb_properties);
     cc->gdb_num_core_regs = 32 + 27;
 

target/microblaze/cpu.h

@@ -429,4 +429,8 @@ static inline int cpu_mmu_index(CPUMBState *env, bool ifetch)
     return MMU_KERNEL_IDX;
 }
 
+#ifndef CONFIG_USER_ONLY
+extern const VMStateDescription vmstate_mb_cpu;
+#endif
+
 #endif

target/microblaze/machine.c

@@ -0,0 +1,106 @@
+/*
+ *  Microblaze VMState for qemu.
+ *
+ *  Copyright (c) 2020 Linaro, Ltd.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "qemu/osdep.h"
+#include "cpu.h"
+#include "migration/cpu.h"
+
+
+static VMStateField vmstate_mmu_fields[] = {
+    VMSTATE_UINT64_2DARRAY(rams, MicroBlazeMMU, 2, TLB_ENTRIES),
+    VMSTATE_UINT8_ARRAY(tids, MicroBlazeMMU, TLB_ENTRIES),
+    VMSTATE_UINT32_ARRAY(regs, MicroBlazeMMU, 3),
+    VMSTATE_END_OF_LIST()
+};
+
+static const VMStateDescription vmstate_mmu = {
+    .name = "mmu",
+    .version_id = 0,
+    .minimum_version_id = 0,
+    .fields = vmstate_mmu_fields,
+};
+
+static int get_msr(QEMUFile *f, void *opaque, size_t size,
+                   const VMStateField *field)
+{
+    CPUMBState *env = container_of(opaque, CPUMBState, msr);
+
+    mb_cpu_write_msr(env, qemu_get_be32(f));
+    return 0;
+}
+
+static int put_msr(QEMUFile *f, void *opaque, size_t size,
+                   const VMStateField *field, QJSON *vmdesc)
+{
+    CPUMBState *env = container_of(opaque, CPUMBState, msr);
+
+    qemu_put_be32(f, mb_cpu_read_msr(env));
+    return 0;
+}
+
+static const VMStateInfo vmstate_msr = {
+    .name = "msr",
+    .get = get_msr,
+    .put = put_msr,
+};
+
+static VMStateField vmstate_env_fields[] = {
+    VMSTATE_UINT32_ARRAY(regs, CPUMBState, 32),
+
+    VMSTATE_UINT32(pc, CPUMBState),
+    VMSTATE_SINGLE(msr, CPUMBState, 0, vmstate_msr, uint32_t),
+    VMSTATE_UINT32(esr, CPUMBState),
+    VMSTATE_UINT32(fsr, CPUMBState),
+    VMSTATE_UINT32(btr, CPUMBState),
+    VMSTATE_UINT32(edr, CPUMBState),
+    VMSTATE_UINT32(slr, CPUMBState),
+    VMSTATE_UINT32(shr, CPUMBState),
+    VMSTATE_UINT64(ear, CPUMBState),
+
+    VMSTATE_UINT32(btarget, CPUMBState),
+    VMSTATE_UINT32(imm, CPUMBState),
+    VMSTATE_UINT32(iflags, CPUMBState),
+
+    VMSTATE_UINT32(res_val, CPUMBState),
+    VMSTATE_UINTTL(res_addr, CPUMBState),
+
+    VMSTATE_STRUCT(mmu, CPUMBState, 0, vmstate_mmu, MicroBlazeMMU),
+
+    VMSTATE_END_OF_LIST()
+};
+
+static const VMStateDescription vmstate_env = {
+    .name = "env",
+    .version_id = 0,
+    .minimum_version_id = 0,
+    .fields = vmstate_env_fields,
+};
+
+static VMStateField vmstate_cpu_fields[] = {
+    VMSTATE_CPU(),
+    VMSTATE_STRUCT(env, MicroBlazeCPU, 1, vmstate_env, CPUMBState),
+    VMSTATE_END_OF_LIST()
+};
+
+const VMStateDescription vmstate_mb_cpu = {
+    .name = "cpu",
+    .version_id = 0,
+    .minimum_version_id = 0,
+    .fields = vmstate_cpu_fields,
+};

target/microblaze/meson.build

@@ -11,7 +11,10 @@ microblaze_ss.add(files(
 ))
 
 microblaze_softmmu_ss = ss.source_set()
-microblaze_softmmu_ss.add(files('mmu.c'))
+microblaze_softmmu_ss.add(files(
+  'mmu.c',
+  'machine.c',
+))
 
 target_arch += {'microblaze': microblaze_ss}
 target_softmmu_arch += {'microblaze': microblaze_softmmu_ss}