diff options
author | Eduardo Habkost <ehabkost@redhat.com> | 2013-11-28 12:01:15 -0200 |
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committer | Juan Quintela <quintela@redhat.com> | 2014-01-13 12:39:49 +0100 |
commit | b6fcfa59fa6ad6d61603e701e006d4ec8f4c9d11 (patch) | |
tree | 8c7fa081b1d2fc91a4255349b0caea8694ab9693 /savevm.c | |
parent | 51b7fa5b3cf7678263382039a884aa2e74742bb6 (diff) | |
download | hqemu-b6fcfa59fa6ad6d61603e701e006d4ec8f4c9d11.zip hqemu-b6fcfa59fa6ad6d61603e701e006d4ec8f4c9d11.tar.gz |
vmstate: Move VMState code to vmstate.c
This will allow unit tests to be written for VMState code without
pulling dependencies from the savevm code.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Orit Wasserman <owasserm@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Diffstat (limited to 'savevm.c')
-rw-r--r-- | savevm.c | 645 |
1 files changed, 0 insertions, 645 deletions
@@ -38,7 +38,6 @@ #include "exec/memory.h" #include "qmp-commands.h" #include "trace.h" -#include "qemu/bitops.h" #include "qemu/iov.h" #include "block/snapshot.h" #include "block/qapi.h" @@ -1010,344 +1009,6 @@ void timer_get(QEMUFile *f, QEMUTimer *ts) } -/* 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. See that the received value is the less or the same - than the one in the field */ - -static int get_int32_le(QEMUFile *f, void *pv, size_t size) -{ - int32_t *old = pv; - int32_t new; - qemu_get_sbe32s(f, &new); - - if (*old <= new) { - return 0; - } - return -EINVAL; -} - -const VMStateInfo vmstate_info_int32_le = { - .name = "int32 equal", - .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, -}; - /* timers */ static int get_timer(QEMUFile *f, void *pv, size_t size) @@ -1369,100 +1030,6 @@ const VMStateInfo vmstate_info_timer = { .put = put_timer, }; -/* 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, -}; typedef struct CompatEntry { char idstr[256]; @@ -1676,144 +1243,6 @@ void vmstate_unregister(DeviceState *dev, const VMStateDescription *vmsd, } } -static void vmstate_subsection_save(QEMUFile *f, const VMStateDescription *vmsd, - void *opaque); -static int vmstate_subsection_load(QEMUFile *f, const VMStateDescription *vmsd, - void *opaque); - -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_old) { - return -EINVAL; - } - if (version_id < vmsd->minimum_version_id) { - return vmsd->load_state_old(f, opaque, version_id); - } - 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 = opaque + field->offset; - int i, n_elems = 1; - int size = field->size; - - if (field->flags & VMS_VBUFFER) { - size = *(int32_t *)(opaque+field->size_offset); - if (field->flags & VMS_MULTIPLY) { - size *= field->size; - } - } - 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); - } - if (field->flags & VMS_POINTER) { - base_addr = *(void **)base_addr + field->start; - } - 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) { - return ret; - } - } - } - 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 = opaque + field->offset; - int i, n_elems = 1; - int size = field->size; - - if (field->flags & VMS_VBUFFER) { - size = *(int32_t *)(opaque+field->size_offset); - if (field->flags & VMS_MULTIPLY) { - size *= field->size; - } - } - 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); - } - if (field->flags & VMS_POINTER) { - base_addr = *(void **)base_addr + field->start; - } - 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); - } - } - } - field++; - } - vmstate_subsection_save(f, vmsd, opaque); -} - static int vmstate_load(QEMUFile *f, SaveStateEntry *se, int version_id) { if (!se->vmsd) { /* Old style */ @@ -2114,80 +1543,6 @@ static SaveStateEntry *find_se(const char *idstr, int instance_id) return NULL; } -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++; - } -} - typedef struct LoadStateEntry { QLIST_ENTRY(LoadStateEntry) entry; SaveStateEntry *se; |