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qdev: Introduce DEFINE_PROP_LINK

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This property can be used to replace the object_property_add_link in
device code, to add a link to other objects, which is a common pattern.

Signed-off-by: Fam Zheng <famz@redhat.com>
Message-Id: <20170714021509.23681-4-famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Fam Zheng 2017-07-14 10:14:52 +08:00 • committed by Paolo Bonzini
parent faabdbb792
commit 5b4ff3c661
3 changed files with 28 additions and 0 deletions
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9
include/hw/qdev-properties.h
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@ -30,6 +30,7 @@ extern PropertyInfo qdev_prop_pci_devfn;
extern PropertyInfo qdev_prop_blocksize;
extern PropertyInfo qdev_prop_pci_host_devaddr;
extern PropertyInfo qdev_prop_arraylen;
extern PropertyInfo qdev_prop_link;
#define DEFINE_PROP(_name, _state, _field, _prop, _type) { \
.name = (_name), \
@ -117,6 +118,14 @@ extern PropertyInfo qdev_prop_arraylen;
.arrayoffset = offsetof(_state, _arrayfield), \
}
#define DEFINE_PROP_LINK(_name, _state, _field, _type, _ptr_type) { \
.name = (_name), \
.info = &(qdev_prop_link), \
.offset = offsetof(_state, _field) \
+ type_check(_ptr_type, typeof_field(_state, _field)), \
.link_type = _type, \
}
#define DEFINE_PROP_UINT8(_n, _s, _f, _d) \
DEFINE_PROP_UNSIGNED(_n, _s, _f, _d, qdev_prop_uint8, uint8_t)
#define DEFINE_PROP_UINT16(_n, _s, _f, _d) \