-
Notifications
You must be signed in to change notification settings - Fork 2
/
Copy pathdata_create3.v
122 lines (117 loc) · 5.9 KB
/
data_create3.v
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
Require Import SpecDeps.
Require Import RData.
Require Import EventReplay.
Require Import MoverTypes.
Require Import Constants.
Require Import CommonLib.
Require Import TableDataOpsRef2.Spec.
Require Import TableDataOpsIntro.Spec.
Local Open Scope Z_scope.
Section Spec.
Definition data_create3_spec (g_rd: Pointer) (data_addr: Z64) (map_addr: Z64) (g_data': Pointer) (g_src: Pointer) (adt: RData) : option (RData * Z64) :=
match map_addr, data_addr with
| VZ64 map_addr, VZ64 data_addr =>
rely is_int64 map_addr; rely is_int64 data_addr;
let idx0 := __addr_to_idx map_addr 0 in
let idx1 := __addr_to_idx map_addr 1 in
let idx2 := __addr_to_idx map_addr 2 in
let idx3 := __addr_to_idx map_addr 3 in
let ret_idx := idx3 in
rely (peq (base g_rd) ginfo_loc);
rely (peq (base g_data') ginfo_loc);
rely (peq (base g_src) ginfo_loc);
rely prop_dec ((buffer (priv adt)) @ SLOT_RD = None);
rely prop_dec ((buffer (priv adt)) @ SLOT_TABLE = None);
rely prop_dec ((buffer (priv adt)) @ SLOT_DELEGATED = None);
rely prop_dec ((buffer (priv adt)) @ SLOT_NS = None);
let rd_gidx := (offset g_rd) in
let data_gidx := offset g_data' in
let src_gidx := offset g_src in
let grd := (gs (share adt)) @ rd_gidx in
rely prop_dec (__addr_to_gidx data_addr = data_gidx);
rely (g_tag (ginfo grd) =? GRANULE_STATE_RD);
rely prop_dec (glock grd = Some CPU_ID);
let root_gidx := (g_rtt (gnorm grd)) in
rely is_gidx rd_gidx; rely is_gidx root_gidx; rely is_gidx src_gidx; rely is_gidx data_gidx;
when adt == query_oracle adt;
let adt := adt {log: EVT CPU_ID (RTT_WALK root_gidx map_addr 3) :: log adt} in
(* hold root lock *)
let groot := (gs (share adt)) @ root_gidx in
rely (tbl_level (gaux groot) =? 0);
rely prop_dec (glock groot = None);
rely (g_tag (ginfo groot) =? GRANULE_STATE_TABLE);
rely (gtype groot =? GRANULE_STATE_TABLE);
(* walk deeper root *)
let entry0 := (g_data (gnorm groot)) @ idx0 in
rely is_int64 entry0;
let phys0 := __entry_to_phys entry0 3 in
let lv1_gidx := __addr_to_gidx phys0 in
if (__entry_is_table entry0) && (GRANULE_ALIGNED phys0) && (is_gidx lv1_gidx) then
(* level 1 valid, hold level 1 lock *)
let glv1 := (gs (share adt)) @ lv1_gidx in
rely prop_dec (glock glv1 = None);
rely (tbl_level (gaux glv1) =? 1);
(* walk deeper level 1 *)
rely (g_tag (ginfo glv1) =? GRANULE_STATE_TABLE);
rely (gtype glv1 =? GRANULE_STATE_TABLE);
let entry1 := (g_data (gnorm glv1)) @ idx1 in
rely is_int64 entry1;
let phys1 := __entry_to_phys entry1 3 in
let lv2_gidx := __addr_to_gidx phys1 in
if (__entry_is_table entry1) && (GRANULE_ALIGNED phys1) && (is_gidx lv2_gidx) then
(* level 2 valid, hold level 2 lock *)
let glv2 := (gs (share adt)) @ lv2_gidx in
rely (tbl_level (gaux glv2) =? 2);
rely prop_dec (glock glv2 = None);
(* walk deeper level 2 *)
rely (g_tag (ginfo glv2) =? GRANULE_STATE_TABLE);
rely (gtype glv2 =? GRANULE_STATE_TABLE);
let entry2 := (g_data (gnorm glv2)) @ idx2 in
rely is_int64 entry2;
let phys2 := __entry_to_phys entry2 3 in
let lv3_gidx := __addr_to_gidx phys2 in
if (__entry_is_table entry2) && (GRANULE_ALIGNED phys2) && (is_gidx lv3_gidx) then
(* level 2 valid, hold level 2 lock *)
let glv3 := (gs (share adt)) @ lv3_gidx in
rely prop_dec (glock glv3 = None);
rely (tbl_level (gaux glv3) =? 3);
let adt := adt {priv: (priv adt) {wi_llt: lv3_gidx} {wi_index: idx3}} in
(* create data *)
let llt_gidx := lv3_gidx in
let idx := idx3 in
let gn_llt := (gs (share adt)) @ llt_gidx in
let gn_data := (gs (share adt)) @ data_gidx in
let gn_src := (gs (share adt)) @ src_gidx in
rely (g_tag (ginfo gn_llt) =? GRANULE_STATE_TABLE);
rely (gtype gn_llt =? GRANULE_STATE_TABLE);
rely (gtype gn_data =? GRANULE_STATE_DELEGATED);
rely (g_tag (ginfo gn_src) =? GRANULE_STATE_NS);
rely (gtype gn_src =? GRANULE_STATE_NS);
rely prop_dec (glock gn_data = Some CPU_ID);
rely (tbl_level (gaux gn_data) =? 0);
let llt_pte := (g_data (gnorm gn_llt)) @ idx in
rely is_int64 llt_pte;
if PTE_TO_IPA_STATE llt_pte =? IPA_STATE_VACANT then
let e := EVT CPU_ID (COPY_NS src_gidx (READ_DATA data_gidx)) in
let gdata' := gn_data {gnorm: (gnorm gn_data) {g_data: g_data (gnorm gn_src)}}
{gaux: mkAuxillaryVars 0 0 map_addr} in
let pte_val := Z.lor (IPA_STATE_TO_PTE IPA_STATE_ABSENT) data_addr in
let llt' := (g_data (gnorm gn_llt)) # idx == pte_val in
let gllt' := gn_llt {ginfo : (ginfo gn_llt) {g_refcount : g_refcount (ginfo gn_llt) + 1}}
{gnorm: (gnorm gn_llt) {g_data: llt'}} in
let cp := EVT CPU_ID (COPY_NS src_gidx (READ_DATA data_gidx)) in
Some (adt {log: EVT CPU_ID (REL llt_gidx gllt' {glock: Some CPU_ID}) :: cp :: log adt}
{share : (share adt) {gs : ((gs (share adt)) # data_gidx == gdata') # llt_gidx == gllt'}},
VZ64 0)
else Some (adt {log: EVT CPU_ID (REL llt_gidx gn_llt {glock: Some CPU_ID}) :: log adt}, VZ64 1)
else
(* level 3 invalid *)
Some (adt {priv: (priv adt) {wi_llt: 0} {wi_index: ret_idx}}, VZ64 1)
else
(* level 2 invalid *)
Some (adt {priv: (priv adt) {wi_llt: 0} {wi_index: ret_idx}}, VZ64 1)
else
(* level 1 invalid *)
Some (adt {priv: (priv adt) {wi_llt: 0} {wi_index: ret_idx}}, VZ64 1)
end.
End Spec.