[Qemu-devel] [PATCH 11/41] migration: Split vmstate-types.c from vmstate.c

[Juan Quintela <quintela@redhat.com>]

Now one just has the interperter, and the other has the basic types.
Once there, add copyright boilerplate.

Signed-off-by: Juan Quintela <quintela@redhat.com>
---
 migration/Makefile.objs   |   2 +-
 migration/vmstate-types.c | 676 ++++++++++++++++++++++++++++++++++++++++++++++
 migration/vmstate.c       | 669 ++-------------------------------------------
 tests/Makefile.include    |   2 +-
 4 files changed, 705 insertions(+), 644 deletions(-)
 create mode 100644 migration/vmstate-types.c

diff --git a/migration/Makefile.objs b/migration/Makefile.objs
index ce8ce12..812b2ec 100644
--- a/migration/Makefile.objs
+++ b/migration/Makefile.objs
@@ -1,7 +1,7 @@
 common-obj-y += migration.o socket.o fd.o exec.o
 common-obj-y += tls.o channel.o
 common-obj-y += colo-comm.o colo.o colo-failover.o
-common-obj-y += vmstate.o page_cache.o
+common-obj-y += vmstate.o vmstate-types.o page_cache.o
 common-obj-y += qemu-file.o
 common-obj-y += qemu-file-channel.o
 common-obj-y += xbzrle.o postcopy-ram.o
diff --git a/migration/vmstate-types.c b/migration/vmstate-types.c
new file mode 100644
index 0000000..0cf14d4
--- /dev/null
+++ b/migration/vmstate-types.c
@@ -0,0 +1,676 @@
+/*
+ * QEMU System Emulator
+ *
+ * Copyright (c) 2009-2017 Red Hat Inc
+ *
+ * Authors:
+ *  Juan Quintela <quintela@redhat.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "qemu/osdep.h"
+#include "qemu-common.h"
+#include "migration/migration.h"
+#include "migration/qemu-file.h"
+#include "migration/vmstate.h"
+#include "qemu/error-report.h"
+#include "qemu/queue.h"
+#include "trace.h"
+
+/* bool */
+
+static int get_bool(QEMUFile *f, void *pv, size_t size, VMStateField *field)
+{
+    bool *v = pv;
+    *v = qemu_get_byte(f);
+    return 0;
+}
+
+static int put_bool(QEMUFile *f, void *pv, size_t size, VMStateField *field,
+                    QJSON *vmdesc)
+{
+    bool *v = pv;
+    qemu_put_byte(f, *v);
+    return 0;
+}
+
+const VMStateInfo vmstate_info_bool = {
+    .name = "bool",
+    .get  = get_bool,
+    .put  = put_bool,
+};
+
+/* 8 bit int */
+
+static int get_int8(QEMUFile *f, void *pv, size_t size, VMStateField *field)
+{
+    int8_t *v = pv;
+    qemu_get_s8s(f, v);
+    return 0;
+}
+
+static int put_int8(QEMUFile *f, void *pv, size_t size, VMStateField *field,
+                     QJSON *vmdesc)
+{
+    int8_t *v = pv;
+    qemu_put_s8s(f, v);
+    return 0;
+}
+
+const VMStateInfo vmstate_info_int8 = {
+    .name = "int8",
+    .get  = get_int8,
+    .put  = put_int8,
+};
+
+/* 16 bit int */
+
+static int get_int16(QEMUFile *f, void *pv, size_t size, VMStateField *field)
+{
+    int16_t *v = pv;
+    qemu_get_sbe16s(f, v);
+    return 0;
+}
+
+static int put_int16(QEMUFile *f, void *pv, size_t size, VMStateField *field,
+                     QJSON *vmdesc)
+{
+    int16_t *v = pv;
+    qemu_put_sbe16s(f, v);
+    return 0;
+}
+
+const VMStateInfo vmstate_info_int16 = {
+    .name = "int16",
+    .get  = get_int16,
+    .put  = put_int16,
+};
+
+/* 32 bit int */
+
+static int get_int32(QEMUFile *f, void *pv, size_t size, VMStateField *field)
+{
+    int32_t *v = pv;
+    qemu_get_sbe32s(f, v);
+    return 0;
+}
+
+static int put_int32(QEMUFile *f, void *pv, size_t size, VMStateField *field,
+                     QJSON *vmdesc)
+{
+    int32_t *v = pv;
+    qemu_put_sbe32s(f, v);
+    return 0;
+}
+
+const VMStateInfo vmstate_info_int32 = {
+    .name = "int32",
+    .get  = get_int32,
+    .put  = put_int32,
+};
+
+/* 32 bit int. See that the received value is the same than the one
+   in the field */
+
+static int get_int32_equal(QEMUFile *f, void *pv, size_t size,
+                           VMStateField *field)
+{
+    int32_t *v = pv;
+    int32_t v2;
+    qemu_get_sbe32s(f, &v2);
+
+    if (*v == v2) {
+        return 0;
+    }
+    error_report("%" PRIx32 " != %" PRIx32, *v, v2);
+    return -EINVAL;
+}
+
+const VMStateInfo vmstate_info_int32_equal = {
+    .name = "int32 equal",
+    .get  = get_int32_equal,
+    .put  = put_int32,
+};
+
+/* 32 bit int. Check that the received value is non-negative
+ * and less than or equal to the one in the field.
+ */
+
+static int get_int32_le(QEMUFile *f, void *pv, size_t size, VMStateField *field)
+{
+    int32_t *cur = pv;
+    int32_t loaded;
+    qemu_get_sbe32s(f, &loaded);
+
+    if (loaded >= 0 && loaded <= *cur) {
+        *cur = loaded;
+        return 0;
+    }
+    error_report("Invalid value %" PRId32
+                 " expecting positive value <= %" PRId32,
+                 loaded, *cur);
+    return -EINVAL;
+}
+
+const VMStateInfo vmstate_info_int32_le = {
+    .name = "int32 le",
+    .get  = get_int32_le,
+    .put  = put_int32,
+};
+
+/* 64 bit int */
+
+static int get_int64(QEMUFile *f, void *pv, size_t size, VMStateField *field)
+{
+    int64_t *v = pv;
+    qemu_get_sbe64s(f, v);
+    return 0;
+}
+
+static int put_int64(QEMUFile *f, void *pv, size_t size, VMStateField *field,
+                      QJSON *vmdesc)
+{
+    int64_t *v = pv;
+    qemu_put_sbe64s(f, v);
+    return 0;
+}
+
+const VMStateInfo vmstate_info_int64 = {
+    .name = "int64",
+    .get  = get_int64,
+    .put  = put_int64,
+};
+
+/* 8 bit unsigned int */
+
+static int get_uint8(QEMUFile *f, void *pv, size_t size, VMStateField *field)
+{
+    uint8_t *v = pv;
+    qemu_get_8s(f, v);
+    return 0;
+}
+
+static int put_uint8(QEMUFile *f, void *pv, size_t size, VMStateField *field,
+                     QJSON *vmdesc)
+{
+    uint8_t *v = pv;
+    qemu_put_8s(f, v);
+    return 0;
+}
+
+const VMStateInfo vmstate_info_uint8 = {
+    .name = "uint8",
+    .get  = get_uint8,
+    .put  = put_uint8,
+};
+
+/* 16 bit unsigned int */
+
+static int get_uint16(QEMUFile *f, void *pv, size_t size, VMStateField *field)
+{
+    uint16_t *v = pv;
+    qemu_get_be16s(f, v);
+    return 0;
+}
+
+static int put_uint16(QEMUFile *f, void *pv, size_t size, VMStateField *field,
+                      QJSON *vmdesc)
+{
+    uint16_t *v = pv;
+    qemu_put_be16s(f, v);
+    return 0;
+}
+
+const VMStateInfo vmstate_info_uint16 = {
+    .name = "uint16",
+    .get  = get_uint16,
+    .put  = put_uint16,
+};
+
+/* 32 bit unsigned int */
+
+static int get_uint32(QEMUFile *f, void *pv, size_t size, VMStateField *field)
+{
+    uint32_t *v = pv;
+    qemu_get_be32s(f, v);
+    return 0;
+}
+
+static int put_uint32(QEMUFile *f, void *pv, size_t size, VMStateField *field,
+                      QJSON *vmdesc)
+{
+    uint32_t *v = pv;
+    qemu_put_be32s(f, v);
+    return 0;
+}
+
+const VMStateInfo vmstate_info_uint32 = {
+    .name = "uint32",
+    .get  = get_uint32,
+    .put  = put_uint32,
+};
+
+/* 32 bit uint. See that the received value is the same than the one
+   in the field */
+
+static int get_uint32_equal(QEMUFile *f, void *pv, size_t size,
+                            VMStateField *field)
+{
+    uint32_t *v = pv;
+    uint32_t v2;
+    qemu_get_be32s(f, &v2);
+
+    if (*v == v2) {
+        return 0;
+    }
+    error_report("%" PRIx32 " != %" PRIx32, *v, v2);
+    return -EINVAL;
+}
+
+const VMStateInfo vmstate_info_uint32_equal = {
+    .name = "uint32 equal",
+    .get  = get_uint32_equal,
+    .put  = put_uint32,
+};
+
+/* 64 bit unsigned int */
+
+static int get_uint64(QEMUFile *f, void *pv, size_t size, VMStateField *field)
+{
+    uint64_t *v = pv;
+    qemu_get_be64s(f, v);
+    return 0;
+}
+
+static int put_uint64(QEMUFile *f, void *pv, size_t size, VMStateField *field,
+                      QJSON *vmdesc)
+{
+    uint64_t *v = pv;
+    qemu_put_be64s(f, v);
+    return 0;
+}
+
+const VMStateInfo vmstate_info_uint64 = {
+    .name = "uint64",
+    .get  = get_uint64,
+    .put  = put_uint64,
+};
+
+static int get_nullptr(QEMUFile *f, void *pv, size_t size, VMStateField *field)
+
+{
+    if (qemu_get_byte(f) == VMS_NULLPTR_MARKER) {
+        return  0;
+    }
+    error_report("vmstate: get_nullptr expected VMS_NULLPTR_MARKER");
+    return -EINVAL;
+}
+
+static int put_nullptr(QEMUFile *f, void *pv, size_t size,
+                        VMStateField *field, QJSON *vmdesc)
+
+{
+    if (pv == NULL) {
+        qemu_put_byte(f, VMS_NULLPTR_MARKER);
+        return 0;
+    }
+    error_report("vmstate: put_nullptr must be called with pv == NULL");
+    return -EINVAL;
+}
+
+const VMStateInfo vmstate_info_nullptr = {
+    .name = "uint64",
+    .get  = get_nullptr,
+    .put  = put_nullptr,
+};
+
+/* 64 bit unsigned int. See that the received value is the same than the one
+   in the field */
+
+static int get_uint64_equal(QEMUFile *f, void *pv, size_t size,
+                            VMStateField *field)
+{
+    uint64_t *v = pv;
+    uint64_t v2;
+    qemu_get_be64s(f, &v2);
+
+    if (*v == v2) {
+        return 0;
+    }
+    error_report("%" PRIx64 " != %" PRIx64, *v, v2);
+    return -EINVAL;
+}
+
+const VMStateInfo vmstate_info_uint64_equal = {
+    .name = "int64 equal",
+    .get  = get_uint64_equal,
+    .put  = put_uint64,
+};
+
+/* 8 bit int. See that the received value is the same than the one
+   in the field */
+
+static int get_uint8_equal(QEMUFile *f, void *pv, size_t size,
+                           VMStateField *field)
+{
+    uint8_t *v = pv;
+    uint8_t v2;
+    qemu_get_8s(f, &v2);
+
+    if (*v == v2) {
+        return 0;
+    }
+    error_report("%x != %x", *v, v2);
+    return -EINVAL;
+}
+
+const VMStateInfo vmstate_info_uint8_equal = {
+    .name = "uint8 equal",
+    .get  = get_uint8_equal,
+    .put  = put_uint8,
+};
+
+/* 16 bit unsigned int int. See that the received value is the same than the one
+   in the field */
+
+static int get_uint16_equal(QEMUFile *f, void *pv, size_t size,
+                            VMStateField *field)
+{
+    uint16_t *v = pv;
+    uint16_t v2;
+    qemu_get_be16s(f, &v2);
+
+    if (*v == v2) {
+        return 0;
+    }
+    error_report("%x != %x", *v, v2);
+    return -EINVAL;
+}
+
+const VMStateInfo vmstate_info_uint16_equal = {
+    .name = "uint16 equal",
+    .get  = get_uint16_equal,
+    .put  = put_uint16,
+};
+
+/* floating point */
+
+static int get_float64(QEMUFile *f, void *pv, size_t size,
+                       VMStateField *field)
+{
+    float64 *v = pv;
+
+    *v = make_float64(qemu_get_be64(f));
+    return 0;
+}
+
+static int put_float64(QEMUFile *f, void *pv, size_t size, VMStateField *field,
+                       QJSON *vmdesc)
+{
+    uint64_t *v = pv;
+
+    qemu_put_be64(f, float64_val(*v));
+    return 0;
+}
+
+const VMStateInfo vmstate_info_float64 = {
+    .name = "float64",
+    .get  = get_float64,
+    .put  = put_float64,
+};
+
+/* CPU_DoubleU type */
+
+static int get_cpudouble(QEMUFile *f, void *pv, size_t size,
+                         VMStateField *field)
+{
+    CPU_DoubleU *v = pv;
+    qemu_get_be32s(f, &v->l.upper);
+    qemu_get_be32s(f, &v->l.lower);
+    return 0;
+}
+
+static int put_cpudouble(QEMUFile *f, void *pv, size_t size,
+                         VMStateField *field, QJSON *vmdesc)
+{
+    CPU_DoubleU *v = pv;
+    qemu_put_be32s(f, &v->l.upper);
+    qemu_put_be32s(f, &v->l.lower);
+    return 0;
+}
+
+const VMStateInfo vmstate_info_cpudouble = {
+    .name = "CPU_Double_U",
+    .get  = get_cpudouble,
+    .put  = put_cpudouble,
+};
+
+/* uint8_t buffers */
+
+static int get_buffer(QEMUFile *f, void *pv, size_t size,
+                      VMStateField *field)
+{
+    uint8_t *v = pv;
+    qemu_get_buffer(f, v, size);
+    return 0;
+}
+
+static int put_buffer(QEMUFile *f, void *pv, size_t size, VMStateField *field,
+                      QJSON *vmdesc)
+{
+    uint8_t *v = pv;
+    qemu_put_buffer(f, v, size);
+    return 0;
+}
+
+const VMStateInfo vmstate_info_buffer = {
+    .name = "buffer",
+    .get  = get_buffer,
+    .put  = put_buffer,
+};
+
+/* unused buffers: space that was used for some fields that are
+   not useful anymore */
+
+static int get_unused_buffer(QEMUFile *f, void *pv, size_t size,
+                             VMStateField *field)
+{
+    uint8_t buf[1024];
+    int block_len;
+
+    while (size > 0) {
+        block_len = MIN(sizeof(buf), size);
+        size -= block_len;
+        qemu_get_buffer(f, buf, block_len);
+    }
+   return 0;
+}
+
+static int put_unused_buffer(QEMUFile *f, void *pv, size_t size,
+                             VMStateField *field, QJSON *vmdesc)
+{
+    static const uint8_t buf[1024];
+    int block_len;
+
+    while (size > 0) {
+        block_len = MIN(sizeof(buf), size);
+        size -= block_len;
+        qemu_put_buffer(f, buf, block_len);
+    }
+
+    return 0;
+}
+
+const VMStateInfo vmstate_info_unused_buffer = {
+    .name = "unused_buffer",
+    .get  = get_unused_buffer,
+    .put  = put_unused_buffer,
+};
+
+/* vmstate_info_tmp, see VMSTATE_WITH_TMP, the idea is that we allocate
+ * a temporary buffer and the pre_load/pre_save methods in the child vmsd
+ * copy stuff from the parent into the child and do calculations to fill
+ * in fields that don't really exist in the parent but need to be in the
+ * stream.
+ */
+static int get_tmp(QEMUFile *f, void *pv, size_t size, VMStateField *field)
+{
+    int ret;
+    const VMStateDescription *vmsd = field->vmsd;
+    int version_id = field->version_id;
+    void *tmp = g_malloc(size);
+
+    /* Writes the parent field which is at the start of the tmp */
+    *(void **)tmp = pv;
+    ret = vmstate_load_state(f, vmsd, tmp, version_id);
+    g_free(tmp);
+    return ret;
+}
+
+static int put_tmp(QEMUFile *f, void *pv, size_t size, VMStateField *field,
+                    QJSON *vmdesc)
+{
+    const VMStateDescription *vmsd = field->vmsd;
+    void *tmp = g_malloc(size);
+
+    /* Writes the parent field which is at the start of the tmp */
+    *(void **)tmp = pv;
+    vmstate_save_state(f, vmsd, tmp, vmdesc);
+    g_free(tmp);
+
+    return 0;
+}
+
+const VMStateInfo vmstate_info_tmp = {
+    .name = "tmp",
+    .get = get_tmp,
+    .put = put_tmp,
+};
+
+/* bitmaps (as defined by bitmap.h). Note that size here is the size
+ * of the bitmap in bits. The on-the-wire format of a bitmap is 64
+ * bit words with the bits in big endian order. The in-memory format
+ * is an array of 'unsigned long', which may be either 32 or 64 bits.
+ */
+/* This is the number of 64 bit words sent over the wire */
+#define BITS_TO_U64S(nr) DIV_ROUND_UP(nr, 64)
+static int get_bitmap(QEMUFile *f, void *pv, size_t size, VMStateField *field)
+{
+    unsigned long *bmp = pv;
+    int i, idx = 0;
+    for (i = 0; i < BITS_TO_U64S(size); i++) {
+        uint64_t w = qemu_get_be64(f);
+        bmp[idx++] = w;
+        if (sizeof(unsigned long) == 4 && idx < BITS_TO_LONGS(size)) {
+            bmp[idx++] = w >> 32;
+        }
+    }
+    return 0;
+}
+
+static int put_bitmap(QEMUFile *f, void *pv, size_t size, VMStateField *field,
+                      QJSON *vmdesc)
+{
+    unsigned long *bmp = pv;
+    int i, idx = 0;
+    for (i = 0; i < BITS_TO_U64S(size); i++) {
+        uint64_t w = bmp[idx++];
+        if (sizeof(unsigned long) == 4 && idx < BITS_TO_LONGS(size)) {
+            w |= ((uint64_t)bmp[idx++]) << 32;
+        }
+        qemu_put_be64(f, w);
+    }
+
+    return 0;
+}
+
+const VMStateInfo vmstate_info_bitmap = {
+    .name = "bitmap",
+    .get = get_bitmap,
+    .put = put_bitmap,
+};
+
+/* get for QTAILQ
+ * meta data about the QTAILQ is encoded in a VMStateField structure
+ */
+static int get_qtailq(QEMUFile *f, void *pv, size_t unused_size,
+                      VMStateField *field)
+{
+    int ret = 0;
+    const VMStateDescription *vmsd = field->vmsd;
+    /* size of a QTAILQ element */
+    size_t size = field->size;
+    /* offset of the QTAILQ entry in a QTAILQ element */
+    size_t entry_offset = field->start;
+    int version_id = field->version_id;
+    void *elm;
+
+    trace_get_qtailq(vmsd->name, version_id);
+    if (version_id > vmsd->version_id) {
+        error_report("%s %s",  vmsd->name, "too new");
+        trace_get_qtailq_end(vmsd->name, "too new", -EINVAL);
+
+        return -EINVAL;
+    }
+    if (version_id < vmsd->minimum_version_id) {
+        error_report("%s %s",  vmsd->name, "too old");
+        trace_get_qtailq_end(vmsd->name, "too old", -EINVAL);
+        return -EINVAL;
+    }
+
+    while (qemu_get_byte(f)) {
+        elm = g_malloc(size);
+        ret = vmstate_load_state(f, vmsd, elm, version_id);
+        if (ret) {
+            return ret;
+        }
+        QTAILQ_RAW_INSERT_TAIL(pv, elm, entry_offset);
+    }
+
+    trace_get_qtailq_end(vmsd->name, "end", ret);
+    return ret;
+}
+
+/* put for QTAILQ */
+static int put_qtailq(QEMUFile *f, void *pv, size_t unused_size,
+                      VMStateField *field, QJSON *vmdesc)
+{
+    const VMStateDescription *vmsd = field->vmsd;
+    /* offset of the QTAILQ entry in a QTAILQ element*/
+    size_t entry_offset = field->start;
+    void *elm;
+
+    trace_put_qtailq(vmsd->name, vmsd->version_id);
+
+    QTAILQ_RAW_FOREACH(elm, pv, entry_offset) {
+        qemu_put_byte(f, true);
+        vmstate_save_state(f, vmsd, elm, vmdesc);
+    }
+    qemu_put_byte(f, false);
+
+    trace_put_qtailq_end(vmsd->name, "end");
+
+    return 0;
+}
+const VMStateInfo vmstate_info_qtailq = {
+    .name = "qtailq",
+    .get  = get_qtailq,
+    .put  = put_qtailq,
+};
diff --git a/migration/vmstate.c b/migration/vmstate.c
index 66c50ee..c284769 100644
--- a/migration/vmstate.c
+++ b/migration/vmstate.c
@@ -1,3 +1,30 @@
+/*
+ * QEMU System Emulator
+ *
+ * Copyright (c) 2009-2017 Red Hat Inc
+ *
+ * Authors:
+ *  Juan Quintela <quintela@redhat.com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
 #include "qemu/osdep.h"
 #include "qemu-common.h"
 #include "migration/migration.h"
@@ -5,7 +32,6 @@
 #include "migration/vmstate.h"
 #include "qemu/bitops.h"
 #include "qemu/error-report.h"
-#include "qemu/queue.h"
 #include "trace.h"
 #include "qjson.h"
 
@@ -475,644 +501,3 @@ static void vmstate_subsection_save(QEMUFile *f, const VMStateDescription *vmsd,
         json_end_array(vmdesc);
     }
 }
-
-/* bool */
-
-static int get_bool(QEMUFile *f, void *pv, size_t size, VMStateField *field)
-{
-    bool *v = pv;
-    *v = qemu_get_byte(f);
-    return 0;
-}
-
-static int put_bool(QEMUFile *f, void *pv, size_t size, VMStateField *field,
-                    QJSON *vmdesc)
-{
-    bool *v = pv;
-    qemu_put_byte(f, *v);
-    return 0;
-}
-
-const VMStateInfo vmstate_info_bool = {
-    .name = "bool",
-    .get  = get_bool,
-    .put  = put_bool,
-};
-
-/* 8 bit int */
-
-static int get_int8(QEMUFile *f, void *pv, size_t size, VMStateField *field)
-{
-    int8_t *v = pv;
-    qemu_get_s8s(f, v);
-    return 0;
-}
-
-static int put_int8(QEMUFile *f, void *pv, size_t size, VMStateField *field,
-                     QJSON *vmdesc)
-{
-    int8_t *v = pv;
-    qemu_put_s8s(f, v);
-    return 0;
-}
-
-const VMStateInfo vmstate_info_int8 = {
-    .name = "int8",
-    .get  = get_int8,
-    .put  = put_int8,
-};
-
-/* 16 bit int */
-
-static int get_int16(QEMUFile *f, void *pv, size_t size, VMStateField *field)
-{
-    int16_t *v = pv;
-    qemu_get_sbe16s(f, v);
-    return 0;
-}
-
-static int put_int16(QEMUFile *f, void *pv, size_t size, VMStateField *field,
-                     QJSON *vmdesc)
-{
-    int16_t *v = pv;
-    qemu_put_sbe16s(f, v);
-    return 0;
-}
-
-const VMStateInfo vmstate_info_int16 = {
-    .name = "int16",
-    .get  = get_int16,
-    .put  = put_int16,
-};
-
-/* 32 bit int */
-
-static int get_int32(QEMUFile *f, void *pv, size_t size, VMStateField *field)
-{
-    int32_t *v = pv;
-    qemu_get_sbe32s(f, v);
-    return 0;
-}
-
-static int put_int32(QEMUFile *f, void *pv, size_t size, VMStateField *field,
-                     QJSON *vmdesc)
-{
-    int32_t *v = pv;
-    qemu_put_sbe32s(f, v);
-    return 0;
-}
-
-const VMStateInfo vmstate_info_int32 = {
-    .name = "int32",
-    .get  = get_int32,
-    .put  = put_int32,
-};
-
-/* 32 bit int. See that the received value is the same than the one
-   in the field */
-
-static int get_int32_equal(QEMUFile *f, void *pv, size_t size,
-                           VMStateField *field)
-{
-    int32_t *v = pv;
-    int32_t v2;
-    qemu_get_sbe32s(f, &v2);
-
-    if (*v == v2) {
-        return 0;
-    }
-    error_report("%" PRIx32 " != %" PRIx32, *v, v2);
-    return -EINVAL;
-}
-
-const VMStateInfo vmstate_info_int32_equal = {
-    .name = "int32 equal",
-    .get  = get_int32_equal,
-    .put  = put_int32,
-};
-
-/* 32 bit int. Check that the received value is non-negative
- * and less than or equal to the one in the field.
- */
-
-static int get_int32_le(QEMUFile *f, void *pv, size_t size, VMStateField *field)
-{
-    int32_t *cur = pv;
-    int32_t loaded;
-    qemu_get_sbe32s(f, &loaded);
-
-    if (loaded >= 0 && loaded <= *cur) {
-        *cur = loaded;
-        return 0;
-    }
-    error_report("Invalid value %" PRId32
-                 " expecting positive value <= %" PRId32,
-                 loaded, *cur);
-    return -EINVAL;
-}
-
-const VMStateInfo vmstate_info_int32_le = {
-    .name = "int32 le",
-    .get  = get_int32_le,
-    .put  = put_int32,
-};
-
-/* 64 bit int */
-
-static int get_int64(QEMUFile *f, void *pv, size_t size, VMStateField *field)
-{
-    int64_t *v = pv;
-    qemu_get_sbe64s(f, v);
-    return 0;
-}
-
-static int put_int64(QEMUFile *f, void *pv, size_t size, VMStateField *field,
-                      QJSON *vmdesc)
-{
-    int64_t *v = pv;
-    qemu_put_sbe64s(f, v);
-    return 0;
-}
-
-const VMStateInfo vmstate_info_int64 = {
-    .name = "int64",
-    .get  = get_int64,
-    .put  = put_int64,
-};
-
-/* 8 bit unsigned int */
-
-static int get_uint8(QEMUFile *f, void *pv, size_t size, VMStateField *field)
-{
-    uint8_t *v = pv;
-    qemu_get_8s(f, v);
-    return 0;
-}
-
-static int put_uint8(QEMUFile *f, void *pv, size_t size, VMStateField *field,
-                     QJSON *vmdesc)
-{
-    uint8_t *v = pv;
-    qemu_put_8s(f, v);
-    return 0;
-}
-
-const VMStateInfo vmstate_info_uint8 = {
-    .name = "uint8",
-    .get  = get_uint8,
-    .put  = put_uint8,
-};
-
-/* 16 bit unsigned int */
-
-static int get_uint16(QEMUFile *f, void *pv, size_t size, VMStateField *field)
-{
-    uint16_t *v = pv;
-    qemu_get_be16s(f, v);
-    return 0;
-}
-
-static int put_uint16(QEMUFile *f, void *pv, size_t size, VMStateField *field,
-                      QJSON *vmdesc)
-{
-    uint16_t *v = pv;
-    qemu_put_be16s(f, v);
-    return 0;
-}
-
-const VMStateInfo vmstate_info_uint16 = {
-    .name = "uint16",
-    .get  = get_uint16,
-    .put  = put_uint16,
-};
-
-/* 32 bit unsigned int */
-
-static int get_uint32(QEMUFile *f, void *pv, size_t size, VMStateField *field)
-{
-    uint32_t *v = pv;
-    qemu_get_be32s(f, v);
-    return 0;
-}
-
-static int put_uint32(QEMUFile *f, void *pv, size_t size, VMStateField *field,
-                      QJSON *vmdesc)
-{
-    uint32_t *v = pv;
-    qemu_put_be32s(f, v);
-    return 0;
-}
-
-const VMStateInfo vmstate_info_uint32 = {
-    .name = "uint32",
-    .get  = get_uint32,
-    .put  = put_uint32,
-};
-
-/* 32 bit uint. See that the received value is the same than the one
-   in the field */
-
-static int get_uint32_equal(QEMUFile *f, void *pv, size_t size,
-                            VMStateField *field)
-{
-    uint32_t *v = pv;
-    uint32_t v2;
-    qemu_get_be32s(f, &v2);
-
-    if (*v == v2) {
-        return 0;
-    }
-    error_report("%" PRIx32 " != %" PRIx32, *v, v2);
-    return -EINVAL;
-}
-
-const VMStateInfo vmstate_info_uint32_equal = {
-    .name = "uint32 equal",
-    .get  = get_uint32_equal,
-    .put  = put_uint32,
-};
-
-/* 64 bit unsigned int */
-
-static int get_uint64(QEMUFile *f, void *pv, size_t size, VMStateField *field)
-{
-    uint64_t *v = pv;
-    qemu_get_be64s(f, v);
-    return 0;
-}
-
-static int put_uint64(QEMUFile *f, void *pv, size_t size, VMStateField *field,
-                      QJSON *vmdesc)
-{
-    uint64_t *v = pv;
-    qemu_put_be64s(f, v);
-    return 0;
-}
-
-const VMStateInfo vmstate_info_uint64 = {
-    .name = "uint64",
-    .get  = get_uint64,
-    .put  = put_uint64,
-};
-
-static int get_nullptr(QEMUFile *f, void *pv, size_t size, VMStateField *field)
-
-{
-    if (qemu_get_byte(f) == VMS_NULLPTR_MARKER) {
-        return  0;
-    }
-    error_report("vmstate: get_nullptr expected VMS_NULLPTR_MARKER");
-    return -EINVAL;
-}
-
-static int put_nullptr(QEMUFile *f, void *pv, size_t size,
-                        VMStateField *field, QJSON *vmdesc)
-
-{
-    if (pv == NULL) {
-        qemu_put_byte(f, VMS_NULLPTR_MARKER);
-        return 0;
-    }
-    error_report("vmstate: put_nullptr must be called with pv == NULL");
-    return -EINVAL;
-}
-
-const VMStateInfo vmstate_info_nullptr = {
-    .name = "uint64",
-    .get  = get_nullptr,
-    .put  = put_nullptr,
-};
-
-/* 64 bit unsigned int. See that the received value is the same than the one
-   in the field */
-
-static int get_uint64_equal(QEMUFile *f, void *pv, size_t size,
-                            VMStateField *field)
-{
-    uint64_t *v = pv;
-    uint64_t v2;
-    qemu_get_be64s(f, &v2);
-
-    if (*v == v2) {
-        return 0;
-    }
-    error_report("%" PRIx64 " != %" PRIx64, *v, v2);
-    return -EINVAL;
-}
-
-const VMStateInfo vmstate_info_uint64_equal = {
-    .name = "int64 equal",
-    .get  = get_uint64_equal,
-    .put  = put_uint64,
-};
-
-/* 8 bit int. See that the received value is the same than the one
-   in the field */
-
-static int get_uint8_equal(QEMUFile *f, void *pv, size_t size,
-                           VMStateField *field)
-{
-    uint8_t *v = pv;
-    uint8_t v2;
-    qemu_get_8s(f, &v2);
-
-    if (*v == v2) {
-        return 0;
-    }
-    error_report("%x != %x", *v, v2);
-    return -EINVAL;
-}
-
-const VMStateInfo vmstate_info_uint8_equal = {
-    .name = "uint8 equal",
-    .get  = get_uint8_equal,
-    .put  = put_uint8,
-};
-
-/* 16 bit unsigned int int. See that the received value is the same than the one
-   in the field */
-
-static int get_uint16_equal(QEMUFile *f, void *pv, size_t size,
-                            VMStateField *field)
-{
-    uint16_t *v = pv;
-    uint16_t v2;
-    qemu_get_be16s(f, &v2);
-
-    if (*v == v2) {
-        return 0;
-    }
-    error_report("%x != %x", *v, v2);
-    return -EINVAL;
-}
-
-const VMStateInfo vmstate_info_uint16_equal = {
-    .name = "uint16 equal",
-    .get  = get_uint16_equal,
-    .put  = put_uint16,
-};
-
-/* floating point */
-
-static int get_float64(QEMUFile *f, void *pv, size_t size,
-                       VMStateField *field)
-{
-    float64 *v = pv;
-
-    *v = make_float64(qemu_get_be64(f));
-    return 0;
-}
-
-static int put_float64(QEMUFile *f, void *pv, size_t size, VMStateField *field,
-                       QJSON *vmdesc)
-{
-    uint64_t *v = pv;
-
-    qemu_put_be64(f, float64_val(*v));
-    return 0;
-}
-
-const VMStateInfo vmstate_info_float64 = {
-    .name = "float64",
-    .get  = get_float64,
-    .put  = put_float64,
-};
-
-/* CPU_DoubleU type */
-
-static int get_cpudouble(QEMUFile *f, void *pv, size_t size,
-                         VMStateField *field)
-{
-    CPU_DoubleU *v = pv;
-    qemu_get_be32s(f, &v->l.upper);
-    qemu_get_be32s(f, &v->l.lower);
-    return 0;
-}
-
-static int put_cpudouble(QEMUFile *f, void *pv, size_t size,
-                         VMStateField *field, QJSON *vmdesc)
-{
-    CPU_DoubleU *v = pv;
-    qemu_put_be32s(f, &v->l.upper);
-    qemu_put_be32s(f, &v->l.lower);
-    return 0;
-}
-
-const VMStateInfo vmstate_info_cpudouble = {
-    .name = "CPU_Double_U",
-    .get  = get_cpudouble,
-    .put  = put_cpudouble,
-};
-
-/* uint8_t buffers */
-
-static int get_buffer(QEMUFile *f, void *pv, size_t size,
-                      VMStateField *field)
-{
-    uint8_t *v = pv;
-    qemu_get_buffer(f, v, size);
-    return 0;
-}
-
-static int put_buffer(QEMUFile *f, void *pv, size_t size, VMStateField *field,
-                      QJSON *vmdesc)
-{
-    uint8_t *v = pv;
-    qemu_put_buffer(f, v, size);
-    return 0;
-}
-
-const VMStateInfo vmstate_info_buffer = {
-    .name = "buffer",
-    .get  = get_buffer,
-    .put  = put_buffer,
-};
-
-/* unused buffers: space that was used for some fields that are
-   not useful anymore */
-
-static int get_unused_buffer(QEMUFile *f, void *pv, size_t size,
-                             VMStateField *field)
-{
-    uint8_t buf[1024];
-    int block_len;
-
-    while (size > 0) {
-        block_len = MIN(sizeof(buf), size);
-        size -= block_len;
-        qemu_get_buffer(f, buf, block_len);
-    }
-   return 0;
-}
-
-static int put_unused_buffer(QEMUFile *f, void *pv, size_t size,
-                             VMStateField *field, QJSON *vmdesc)
-{
-    static const uint8_t buf[1024];
-    int block_len;
-
-    while (size > 0) {
-        block_len = MIN(sizeof(buf), size);
-        size -= block_len;
-        qemu_put_buffer(f, buf, block_len);
-    }
-
-    return 0;
-}
-
-const VMStateInfo vmstate_info_unused_buffer = {
-    .name = "unused_buffer",
-    .get  = get_unused_buffer,
-    .put  = put_unused_buffer,
-};
-
-/* vmstate_info_tmp, see VMSTATE_WITH_TMP, the idea is that we allocate
- * a temporary buffer and the pre_load/pre_save methods in the child vmsd
- * copy stuff from the parent into the child and do calculations to fill
- * in fields that don't really exist in the parent but need to be in the
- * stream.
- */
-static int get_tmp(QEMUFile *f, void *pv, size_t size, VMStateField *field)
-{
-    int ret;
-    const VMStateDescription *vmsd = field->vmsd;
-    int version_id = field->version_id;
-    void *tmp = g_malloc(size);
-
-    /* Writes the parent field which is at the start of the tmp */
-    *(void **)tmp = pv;
-    ret = vmstate_load_state(f, vmsd, tmp, version_id);
-    g_free(tmp);
-    return ret;
-}
-
-static int put_tmp(QEMUFile *f, void *pv, size_t size, VMStateField *field,
-                    QJSON *vmdesc)
-{
-    const VMStateDescription *vmsd = field->vmsd;
-    void *tmp = g_malloc(size);
-
-    /* Writes the parent field which is at the start of the tmp */
-    *(void **)tmp = pv;
-    vmstate_save_state(f, vmsd, tmp, vmdesc);
-    g_free(tmp);
-
-    return 0;
-}
-
-const VMStateInfo vmstate_info_tmp = {
-    .name = "tmp",
-    .get = get_tmp,
-    .put = put_tmp,
-};
-
-/* bitmaps (as defined by bitmap.h). Note that size here is the size
- * of the bitmap in bits. The on-the-wire format of a bitmap is 64
- * bit words with the bits in big endian order. The in-memory format
- * is an array of 'unsigned long', which may be either 32 or 64 bits.
- */
-/* This is the number of 64 bit words sent over the wire */
-#define BITS_TO_U64S(nr) DIV_ROUND_UP(nr, 64)
-static int get_bitmap(QEMUFile *f, void *pv, size_t size, VMStateField *field)
-{
-    unsigned long *bmp = pv;
-    int i, idx = 0;
-    for (i = 0; i < BITS_TO_U64S(size); i++) {
-        uint64_t w = qemu_get_be64(f);
-        bmp[idx++] = w;
-        if (sizeof(unsigned long) == 4 && idx < BITS_TO_LONGS(size)) {
-            bmp[idx++] = w >> 32;
-        }
-    }
-    return 0;
-}
-
-static int put_bitmap(QEMUFile *f, void *pv, size_t size, VMStateField *field,
-                      QJSON *vmdesc)
-{
-    unsigned long *bmp = pv;
-    int i, idx = 0;
-    for (i = 0; i < BITS_TO_U64S(size); i++) {
-        uint64_t w = bmp[idx++];
-        if (sizeof(unsigned long) == 4 && idx < BITS_TO_LONGS(size)) {
-            w |= ((uint64_t)bmp[idx++]) << 32;
-        }
-        qemu_put_be64(f, w);
-    }
-
-    return 0;
-}
-
-const VMStateInfo vmstate_info_bitmap = {
-    .name = "bitmap",
-    .get = get_bitmap,
-    .put = put_bitmap,
-};
-
-/* get for QTAILQ
- * meta data about the QTAILQ is encoded in a VMStateField structure
- */
-static int get_qtailq(QEMUFile *f, void *pv, size_t unused_size,
-                      VMStateField *field)
-{
-    int ret = 0;
-    const VMStateDescription *vmsd = field->vmsd;
-    /* size of a QTAILQ element */
-    size_t size = field->size;
-    /* offset of the QTAILQ entry in a QTAILQ element */
-    size_t entry_offset = field->start;
-    int version_id = field->version_id;
-    void *elm;
-
-    trace_get_qtailq(vmsd->name, version_id);
-    if (version_id > vmsd->version_id) {
-        error_report("%s %s",  vmsd->name, "too new");
-        trace_get_qtailq_end(vmsd->name, "too new", -EINVAL);
-
-        return -EINVAL;
-    }
-    if (version_id < vmsd->minimum_version_id) {
-        error_report("%s %s",  vmsd->name, "too old");
-        trace_get_qtailq_end(vmsd->name, "too old", -EINVAL);
-        return -EINVAL;
-    }
-
-    while (qemu_get_byte(f)) {
-        elm = g_malloc(size);
-        ret = vmstate_load_state(f, vmsd, elm, version_id);
-        if (ret) {
-            return ret;
-        }
-        QTAILQ_RAW_INSERT_TAIL(pv, elm, entry_offset);
-    }
-
-    trace_get_qtailq_end(vmsd->name, "end", ret);
-    return ret;
-}
-
-/* put for QTAILQ */
-static int put_qtailq(QEMUFile *f, void *pv, size_t unused_size,
-                      VMStateField *field, QJSON *vmdesc)
-{
-    const VMStateDescription *vmsd = field->vmsd;
-    /* offset of the QTAILQ entry in a QTAILQ element*/
-    size_t entry_offset = field->start;
-    void *elm;
-
-    trace_put_qtailq(vmsd->name, vmsd->version_id);
-
-    QTAILQ_RAW_FOREACH(elm, pv, entry_offset) {
-        qemu_put_byte(f, true);
-        vmstate_save_state(f, vmsd, elm, vmdesc);
-    }
-    qemu_put_byte(f, false);
-
-    trace_put_qtailq_end(vmsd->name, "end");
-
-    return 0;
-}
-const VMStateInfo vmstate_info_qtailq = {
-    .name = "qtailq",
-    .get  = get_qtailq,
-    .put  = put_qtailq,
-};
diff --git a/tests/Makefile.include b/tests/Makefile.include
index 0f98c04..7eaf586 100644
--- a/tests/Makefile.include
+++ b/tests/Makefile.include
@@ -569,7 +569,7 @@ tests/test-qdev-global-props$(EXESUF): tests/test-qdev-global-props.o \
 	hw/core/reset.o \
 	$(test-qapi-obj-y)
 tests/test-vmstate$(EXESUF): tests/test-vmstate.o \
-	migration/vmstate.o migration/qemu-file.o \
+	migration/vmstate.o migration/vmstate-types.o migration/qemu-file.o \
         migration/qemu-file-channel.o migration/qjson.o \
 	$(test-io-obj-y)
 tests/test-timed-average$(EXESUF): tests/test-timed-average.o $(test-util-obj-y)
-- 
2.9.3