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| author | Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru> | 2020-10-03 20:13:26 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-10-06 08:34:49 +0200 |
| commit | e751067179e18178d0f0ab5955b95d59e2a081de (patch) | |
| tree | a4c504693aa2622de0f0f913766ddd33233e9afd /hmp-commands.hx | |
| parent | e3b09ad2b6e9b23ebc7c2ba133e8a22e53dec301 (diff) | |
| download | focaccia-qemu-e751067179e18178d0f0ab5955b95d59e2a081de.tar.gz focaccia-qemu-e751067179e18178d0f0ab5955b95d59e2a081de.zip | |
replay: introduce breakpoint at the specified step
This patch introduces replay_break, replay_delete_break qmp and hmp commands. These commands allow stopping at the specified instruction. It may be useful for debugging when there are some known events that should be investigated. replay_break command has one argument - number of instructions executed since the start of the replay. replay_delete_break removes previously set breakpoint. Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgalyuk@ispras.ru> Acked-by: Markus Armbruster <armbru@redhat.com> -- v4 changes: - removed useless error_free call Message-Id: <160174520606.12451.7056879546045599378.stgit@pasha-ThinkPad-X280> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'hmp-commands.hx')
| -rw-r--r-- | hmp-commands.hx | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/hmp-commands.hx b/hmp-commands.hx index 1088d64503..7680d0b380 100644 --- a/hmp-commands.hx +++ b/hmp-commands.hx @@ -1805,6 +1805,38 @@ SRST ERST { + .name = "replay_break", + .args_type = "icount:i", + .params = "icount", + .help = "set breakpoint at the specified instruction count", + .cmd = hmp_replay_break, + }, + +SRST +``replay_break`` *icount* + Set replay breakpoint at instruction count *icount*. + Execution stops when the specified instruction is reached. + There can be at most one breakpoint. When breakpoint is set, any prior + one is removed. The breakpoint may be set only in replay mode and only + "in the future", i.e. at instruction counts greater than the current one. + The current instruction count can be observed with ``info replay``. +ERST + + { + .name = "replay_delete_break", + .args_type = "", + .params = "", + .help = "remove replay breakpoint", + .cmd = hmp_replay_delete_break, + }, + +SRST +``replay_delete_break`` + Remove replay breakpoint which was previously set with ``replay_break``. + The command is ignored when there are no replay breakpoints. +ERST + + { .name = "info", .args_type = "item:s?", .params = "[subcommand]", |