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vmstate: Add support for two dimensional arrays

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Add support for migrating two dimensional arrays, by defining
a set of new macros VMSTATE_*_2DARRAY paralleling the existing
VMSTATE_*_ARRAY macros. 2D arrays are handled the same for actual
state serialization; the only difference is that the type check
has to change for a 2D array.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Igor Mitsyanko <i.mitsyanko@gmail.com>
Message-id: 1363975375-3166-2-git-send-email-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2013-04-05 16:17:59 +01:00
parent b79269b78d
commit bd7f92e59e
1 changed files with 27 additions and 0 deletions
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27
include/migration/vmstate.h
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@ -164,6 +164,7 @@ extern const VMStateInfo vmstate_info_buffer;
extern const VMStateInfo vmstate_info_unused_buffer;
extern const VMStateInfo vmstate_info_bitmap;
#define type_check_2darray(t1,t2,n,m) ((t1(*)[n][m])0 - (t2*)0)
#define type_check_array(t1,t2,n) ((t1(*)[n])0 - (t2*)0)
#define type_check_pointer(t1,t2) ((t1**)0 - (t2*)0)
@ -179,6 +180,10 @@ extern const VMStateInfo vmstate_info_bitmap;
(offsetof(_state, _field) + \
type_check_array(_type, typeof_field(_state, _field), _num))
#define vmstate_offset_2darray(_state, _field, _type, _n1, _n2) \
(offsetof(_state, _field) + \
type_check_2darray(_type, typeof_field(_state, _field), _n1, _n2))
#define vmstate_offset_sub_array(_state, _field, _type, _start) \
(offsetof(_state, _field[_start]))
@ -224,6 +229,16 @@ extern const VMStateInfo vmstate_info_bitmap;
.offset = vmstate_offset_array(_state, _field, _type, _num), \
}
#define VMSTATE_2DARRAY(_field, _state, _n1, _n2, _version, _info, _type) { \
.name = (stringify(_field)), \
.version_id = (_version), \
.num = (_n1) * (_n2), \
.info = &(_info), \
.size = sizeof(_type), \
.flags = VMS_ARRAY, \
.offset = vmstate_offset_2darray(_state, _field, _type, _n1, _n2), \
}
#define VMSTATE_ARRAY_TEST(_field, _state, _num, _test, _info, _type) {\
.name = (stringify(_field)), \
.field_exists = (_test), \
@ -592,15 +607,27 @@ extern const VMStateInfo vmstate_info_bitmap;
#define VMSTATE_UINT16_ARRAY_V(_f, _s, _n, _v) \
VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_uint16, uint16_t)
#define VMSTATE_UINT16_2DARRAY_V(_f, _s, _n1, _n2, _v) \
VMSTATE_2DARRAY(_f, _s, _n1, _n2, _v, vmstate_info_uint16, uint16_t)
#define VMSTATE_UINT16_ARRAY(_f, _s, _n) \
VMSTATE_UINT16_ARRAY_V(_f, _s, _n, 0)
#define VMSTATE_UINT16_2DARRAY(_f, _s, _n1, _n2) \
VMSTATE_UINT16_2DARRAY_V(_f, _s, _n1, _n2, 0)
#define VMSTATE_UINT8_2DARRAY_V(_f, _s, _n1, _n2, _v) \
VMSTATE_2DARRAY(_f, _s, _n1, _n2, _v, vmstate_info_uint8, uint8_t)
#define VMSTATE_UINT8_ARRAY_V(_f, _s, _n, _v) \
VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_uint8, uint8_t)
#define VMSTATE_UINT8_ARRAY(_f, _s, _n) \
VMSTATE_UINT8_ARRAY_V(_f, _s, _n, 0)
#define VMSTATE_UINT8_2DARRAY(_f, _s, _n1, _n2) \
VMSTATE_UINT8_2DARRAY_V(_f, _s, _n1, _n2, 0)
#define VMSTATE_UINT32_ARRAY_V(_f, _s, _n, _v) \
VMSTATE_ARRAY(_f, _s, _n, _v, vmstate_info_uint32, uint32_t)