Start migrating migration code into a migration directory

The migration code now occupies a fair chunk of the top level .c
files, it seems time to give it it's own directory.

I've not touched:
   arch_init.c - that's mostly RAM migration but has a few random other
                 bits
   savevm.c    - because it's built target specific

This is purely a code move; no code has changed.
   - it fails checkpatch because of old violations, it feels safer
     to keep this as purely a move and fix those at some mythical future
     date.

The xbzrle and vmstate tests are now only run for softmmu builds
since they require files in the migrate/ directory which is only built
for softmmu.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>

1 files changed, 0 insertions, 687 deletions

diff --git a/vmstate.c b/vmstate.c
deleted file mode 100644
index 3dde574c0f..0000000000
--- a/vmstate.c
+++ /dev/null
@@ -1,687 +0,0 @@
-#include "qemu-common.h"
-#include "migration/migration.h"
-#include "migration/qemu-file.h"
-#include "migration/vmstate.h"
-#include "qemu/bitops.h"
-#include "trace.h"
-
-static void vmstate_subsection_save(QEMUFile *f, const VMStateDescription *vmsd,
-                                    void *opaque);
-static int vmstate_subsection_load(QEMUFile *f, const VMStateDescription *vmsd,
-                                   void *opaque);
-
-static int vmstate_n_elems(void *opaque, VMStateField *field)
-{
-    int n_elems = 1;
-
-    if (field->flags & VMS_ARRAY) {
-        n_elems = field->num;
-    } else if (field->flags & VMS_VARRAY_INT32) {
-        n_elems = *(int32_t *)(opaque+field->num_offset);
-    } else if (field->flags & VMS_VARRAY_UINT32) {
-        n_elems = *(uint32_t *)(opaque+field->num_offset);
-    } else if (field->flags & VMS_VARRAY_UINT16) {
-        n_elems = *(uint16_t *)(opaque+field->num_offset);
-    } else if (field->flags & VMS_VARRAY_UINT8) {
-        n_elems = *(uint8_t *)(opaque+field->num_offset);
-    }
-
-    return n_elems;
-}
-
-static int vmstate_size(void *opaque, VMStateField *field)
-{
-    int size = field->size;
-
-    if (field->flags & VMS_VBUFFER) {
-        size = *(int32_t *)(opaque+field->size_offset);
-        if (field->flags & VMS_MULTIPLY) {
-            size *= field->size;
-        }
-    }
-
-    return size;
-}
-
-static void *vmstate_base_addr(void *opaque, VMStateField *field, bool alloc)
-{
-    void *base_addr = opaque + field->offset;
-
-    if (field->flags & VMS_POINTER) {
-        if (alloc && (field->flags & VMS_ALLOC)) {
-            gsize size = 0;
-            if (field->flags & VMS_VBUFFER) {
-                size = vmstate_size(opaque, field);
-            } else {
-                int n_elems = vmstate_n_elems(opaque, field);
-                if (n_elems) {
-                    size = n_elems * field->size;
-                }
-            }
-            if (size) {
-                *((void **)base_addr + field->start) = g_malloc(size);
-            }
-        }
-        base_addr = *(void **)base_addr + field->start;
-    }
-
-    return base_addr;
-}
-
-int vmstate_load_state(QEMUFile *f, const VMStateDescription *vmsd,
-                       void *opaque, int version_id)
-{
-    VMStateField *field = vmsd->fields;
-    int ret;
-
-    if (version_id > vmsd->version_id) {
-        return -EINVAL;
-    }
-    if  (version_id < vmsd->minimum_version_id) {
-        if (vmsd->load_state_old &&
-            version_id >= vmsd->minimum_version_id_old) {
-            return vmsd->load_state_old(f, opaque, version_id);
-        }
-        return -EINVAL;
-    }
-    if (vmsd->pre_load) {
-        int ret = vmsd->pre_load(opaque);
-        if (ret) {
-            return ret;
-        }
-    }
-    while (field->name) {
-        if ((field->field_exists &&
-             field->field_exists(opaque, version_id)) ||
-            (!field->field_exists &&
-             field->version_id <= version_id)) {
-            void *base_addr = vmstate_base_addr(opaque, field, true);
-            int i, n_elems = vmstate_n_elems(opaque, field);
-            int size = vmstate_size(opaque, field);
-
-            for (i = 0; i < n_elems; i++) {
-                void *addr = base_addr + size * i;
-
-                if (field->flags & VMS_ARRAY_OF_POINTER) {
-                    addr = *(void **)addr;
-                }
-                if (field->flags & VMS_STRUCT) {
-                    ret = vmstate_load_state(f, field->vmsd, addr,
-                                             field->vmsd->version_id);
-                } else {
-                    ret = field->info->get(f, addr, size);
-
-                }
-                if (ret >= 0) {
-                    ret = qemu_file_get_error(f);
-                }
-                if (ret < 0) {
-                    qemu_file_set_error(f, ret);
-                    trace_vmstate_load_field_error(field->name, ret);
-                    return ret;
-                }
-            }
-        } else if (field->flags & VMS_MUST_EXIST) {
-            fprintf(stderr, "Input validation failed: %s/%s\n",
-                    vmsd->name, field->name);
-            return -1;
-        }
-        field++;
-    }
-    ret = vmstate_subsection_load(f, vmsd, opaque);
-    if (ret != 0) {
-        return ret;
-    }
-    if (vmsd->post_load) {
-        return vmsd->post_load(opaque, version_id);
-    }
-    return 0;
-}
-
-void vmstate_save_state(QEMUFile *f, const VMStateDescription *vmsd,
-                        void *opaque)
-{
-    VMStateField *field = vmsd->fields;
-
-    if (vmsd->pre_save) {
-        vmsd->pre_save(opaque);
-    }
-    while (field->name) {
-        if (!field->field_exists ||
-            field->field_exists(opaque, vmsd->version_id)) {
-            void *base_addr = vmstate_base_addr(opaque, field, false);
-            int i, n_elems = vmstate_n_elems(opaque, field);
-            int size = vmstate_size(opaque, field);
-
-            for (i = 0; i < n_elems; i++) {
-                void *addr = base_addr + size * i;
-
-                if (field->flags & VMS_ARRAY_OF_POINTER) {
-                    addr = *(void **)addr;
-                }
-                if (field->flags & VMS_STRUCT) {
-                    vmstate_save_state(f, field->vmsd, addr);
-                } else {
-                    field->info->put(f, addr, size);
-                }
-            }
-        } else {
-            if (field->flags & VMS_MUST_EXIST) {
-                fprintf(stderr, "Output state validation failed: %s/%s\n",
-                        vmsd->name, field->name);
-                assert(!(field->flags & VMS_MUST_EXIST));
-            }
-        }
-        field++;
-    }
-    vmstate_subsection_save(f, vmsd, opaque);
-}
-
-static const VMStateDescription *
-    vmstate_get_subsection(const VMStateSubsection *sub, char *idstr)
-{
-    while (sub && sub->needed) {
-        if (strcmp(idstr, sub->vmsd->name) == 0) {
-            return sub->vmsd;
-        }
-        sub++;
-    }
-    return NULL;
-}
-
-static int vmstate_subsection_load(QEMUFile *f, const VMStateDescription *vmsd,
-                                   void *opaque)
-{
-    while (qemu_peek_byte(f, 0) == QEMU_VM_SUBSECTION) {
-        char idstr[256];
-        int ret;
-        uint8_t version_id, len, size;
-        const VMStateDescription *sub_vmsd;
-
-        len = qemu_peek_byte(f, 1);
-        if (len < strlen(vmsd->name) + 1) {
-            /* subsection name has be be "section_name/a" */
-            return 0;
-        }
-        size = qemu_peek_buffer(f, (uint8_t *)idstr, len, 2);
-        if (size != len) {
-            return 0;
-        }
-        idstr[size] = 0;
-
-        if (strncmp(vmsd->name, idstr, strlen(vmsd->name)) != 0) {
-            /* it don't have a valid subsection name */
-            return 0;
-        }
-        sub_vmsd = vmstate_get_subsection(vmsd->subsections, idstr);
-        if (sub_vmsd == NULL) {
-            return -ENOENT;
-        }
-        qemu_file_skip(f, 1); /* subsection */
-        qemu_file_skip(f, 1); /* len */
-        qemu_file_skip(f, len); /* idstr */
-        version_id = qemu_get_be32(f);
-
-        ret = vmstate_load_state(f, sub_vmsd, opaque, version_id);
-        if (ret) {
-            return ret;
-        }
-    }
-    return 0;
-}
-
-static void vmstate_subsection_save(QEMUFile *f, const VMStateDescription *vmsd,
-                                    void *opaque)
-{
-    const VMStateSubsection *sub = vmsd->subsections;
-
-    while (sub && sub->needed) {
-        if (sub->needed(opaque)) {
-            const VMStateDescription *vmsd = sub->vmsd;
-            uint8_t len;
-
-            qemu_put_byte(f, QEMU_VM_SUBSECTION);
-            len = strlen(vmsd->name);
-            qemu_put_byte(f, len);
-            qemu_put_buffer(f, (uint8_t *)vmsd->name, len);
-            qemu_put_be32(f, vmsd->version_id);
-            vmstate_save_state(f, vmsd, opaque);
-        }
-        sub++;
-    }
-}
-
-/* bool */
-
-static int get_bool(QEMUFile *f, void *pv, size_t size)
-{
-    bool *v = pv;
-    *v = qemu_get_byte(f);
-    return 0;
-}
-
-static void put_bool(QEMUFile *f, void *pv, size_t size)
-{
-    bool *v = pv;
-    qemu_put_byte(f, *v);
-}
-
-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)
-{
-    int8_t *v = pv;
-    qemu_get_s8s(f, v);
-    return 0;
-}
-
-static void put_int8(QEMUFile *f, void *pv, size_t size)
-{
-    int8_t *v = pv;
-    qemu_put_s8s(f, v);
-}
-
-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)
-{
-    int16_t *v = pv;
-    qemu_get_sbe16s(f, v);
-    return 0;
-}
-
-static void put_int16(QEMUFile *f, void *pv, size_t size)
-{
-    int16_t *v = pv;
-    qemu_put_sbe16s(f, v);
-}
-
-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)
-{
-    int32_t *v = pv;
-    qemu_get_sbe32s(f, v);
-    return 0;
-}
-
-static void put_int32(QEMUFile *f, void *pv, size_t size)
-{
-    int32_t *v = pv;
-    qemu_put_sbe32s(f, v);
-}
-
-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)
-{
-    int32_t *v = pv;
-    int32_t v2;
-    qemu_get_sbe32s(f, &v2);
-
-    if (*v == v2) {
-        return 0;
-    }
-    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)
-{
-    int32_t *cur = pv;
-    int32_t loaded;
-    qemu_get_sbe32s(f, &loaded);
-
-    if (loaded >= 0 && loaded <= *cur) {
-        *cur = loaded;
-        return 0;
-    }
-    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)
-{
-    int64_t *v = pv;
-    qemu_get_sbe64s(f, v);
-    return 0;
-}
-
-static void put_int64(QEMUFile *f, void *pv, size_t size)
-{
-    int64_t *v = pv;
-    qemu_put_sbe64s(f, v);
-}
-
-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)
-{
-    uint8_t *v = pv;
-    qemu_get_8s(f, v);
-    return 0;
-}
-
-static void put_uint8(QEMUFile *f, void *pv, size_t size)
-{
-    uint8_t *v = pv;
-    qemu_put_8s(f, v);
-}
-
-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)
-{
-    uint16_t *v = pv;
-    qemu_get_be16s(f, v);
-    return 0;
-}
-
-static void put_uint16(QEMUFile *f, void *pv, size_t size)
-{
-    uint16_t *v = pv;
-    qemu_put_be16s(f, v);
-}
-
-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)
-{
-    uint32_t *v = pv;
-    qemu_get_be32s(f, v);
-    return 0;
-}
-
-static void put_uint32(QEMUFile *f, void *pv, size_t size)
-{
-    uint32_t *v = pv;
-    qemu_put_be32s(f, v);
-}
-
-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)
-{
-    uint32_t *v = pv;
-    uint32_t v2;
-    qemu_get_be32s(f, &v2);
-
-    if (*v == v2) {
-        return 0;
-    }
-    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)
-{
-    uint64_t *v = pv;
-    qemu_get_be64s(f, v);
-    return 0;
-}
-
-static void put_uint64(QEMUFile *f, void *pv, size_t size)
-{
-    uint64_t *v = pv;
-    qemu_put_be64s(f, v);
-}
-
-const VMStateInfo vmstate_info_uint64 = {
-    .name = "uint64",
-    .get  = get_uint64,
-    .put  = put_uint64,
-};
-
-/* 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)
-{
-    uint64_t *v = pv;
-    uint64_t v2;
-    qemu_get_be64s(f, &v2);
-
-    if (*v == v2) {
-        return 0;
-    }
-    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)
-{
-    uint8_t *v = pv;
-    uint8_t v2;
-    qemu_get_8s(f, &v2);
-
-    if (*v == v2) {
-        return 0;
-    }
-    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)
-{
-    uint16_t *v = pv;
-    uint16_t v2;
-    qemu_get_be16s(f, &v2);
-
-    if (*v == v2) {
-        return 0;
-    }
-    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)
-{
-    float64 *v = pv;
-
-    *v = make_float64(qemu_get_be64(f));
-    return 0;
-}
-
-static void put_float64(QEMUFile *f, void *pv, size_t size)
-{
-    uint64_t *v = pv;
-
-    qemu_put_be64(f, float64_val(*v));
-}
-
-const VMStateInfo vmstate_info_float64 = {
-    .name = "float64",
-    .get  = get_float64,
-    .put  = put_float64,
-};
-
-/* uint8_t buffers */
-
-static int get_buffer(QEMUFile *f, void *pv, size_t size)
-{
-    uint8_t *v = pv;
-    qemu_get_buffer(f, v, size);
-    return 0;
-}
-
-static void put_buffer(QEMUFile *f, void *pv, size_t size)
-{
-    uint8_t *v = pv;
-    qemu_put_buffer(f, v, size);
-}
-
-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)
-{
-    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 void put_unused_buffer(QEMUFile *f, void *pv, size_t size)
-{
-    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);
-    }
-}
-
-const VMStateInfo vmstate_info_unused_buffer = {
-    .name = "unused_buffer",
-    .get  = get_unused_buffer,
-    .put  = put_unused_buffer,
-};
-
-/* 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)
-{
-    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 void put_bitmap(QEMUFile *f, void *pv, size_t size)
-{
-    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);
-    }
-}
-
-const VMStateInfo vmstate_info_bitmap = {
-    .name = "bitmap",
-    .get = get_bitmap,
-    .put = put_bitmap,
-};