xref: /openbmc/qemu/qapi/replay.json (revision b4b9a0e3) 
1# -*- Mode: Python -*-
2#
3
4##
5# = Record/replay
6##
7
8{ 'include': 'common.json' }
9
10##
11# @ReplayMode:
12#
13# Mode of the replay subsystem.
14#
15# @none: normal execution mode. Replay or record are not enabled.
16#
17# @record: record mode. All non-deterministic data is written into the
18#          replay log.
19#
20# @play: replay mode. Non-deterministic data required for system execution
21#        is read from the log.
22#
23# Since: 2.5
24##
25{ 'enum': 'ReplayMode',
26  'data': [ 'none', 'record', 'play' ] }
27
28##
29# @ReplayInfo:
30#
31# Record/replay information.
32#
33# @mode: current mode.
34#
35# @filename: name of the record/replay log file.
36#            It is present only in record or replay modes, when the log
37#            is recorded or replayed.
38#
39# @icount: current number of executed instructions.
40#
41# Since: 5.2
42#
43##
44{ 'struct': 'ReplayInfo',
45  'data': { 'mode': 'ReplayMode', '*filename': 'str', 'icount': 'int' } }
46
47##
48# @query-replay:
49#
50# Retrieve the record/replay information.
51# It includes current instruction count which may be used for
52# @replay-break and @replay-seek commands.
53#
54# Returns: record/replay information.
55#
56# Since: 5.2
57#
58# Example:
59#
60# -> { "execute": "query-replay" }
61# <- { "return": { "mode": "play", "filename": "log.rr", "icount": 220414 } }
62#
63##
64{ 'command': 'query-replay',
65  'returns': 'ReplayInfo' }
66
67##
68# @replay-break:
69#
70# Set replay breakpoint at instruction count @icount.
71# Execution stops when the specified instruction is reached.
72# There can be at most one breakpoint. When breakpoint is set, any prior
73# one is removed.  The breakpoint may be set only in replay mode and only
74# "in the future", i.e. at instruction counts greater than the current one.
75# The current instruction count can be observed with @query-replay.
76#
77# @icount: instruction count to stop at
78#
79# Since: 5.2
80#
81# Example:
82#
83# -> { "execute": "replay-break", "data": { "icount": 220414 } }
84#
85##
86{ 'command': 'replay-break', 'data': { 'icount': 'int' } }
87
88##
89# @replay-delete-break:
90#
91# Remove replay breakpoint which was set with @replay-break.
92# The command is ignored when there are no replay breakpoints.
93#
94# Since: 5.2
95#
96# Example:
97#
98# -> { "execute": "replay-delete-break" }
99#
100##
101{ 'command': 'replay-delete-break' }
102
103##
104# @replay-seek:
105#
106# Automatically proceed to the instruction count @icount, when
107# replaying the execution. The command automatically loads nearest
108# snapshot and replays the execution to find the desired instruction.
109# When there is no preceding snapshot or the execution is not replayed,
110# then the command fails.
111# icount for the reference may be obtained with @query-replay command.
112#
113# @icount: target instruction count
114#
115# Since: 5.2
116#
117# Example:
118#
119# -> { "execute": "replay-seek", "data": { "icount": 220414 } }
120##
121{ 'command': 'replay-seek', 'data': { 'icount': 'int' } }
122