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Merge pull request #2899 from vadosnaprimer/rewind

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explain the rewind command in debughlp
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R. Belmont 2017-12-07 08:02:40 -05:00 committed by GitHub
commit 4a0d5ba02f
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1 changed files with 15 additions and 1 deletions
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src/emu/debug/debughlp.cpp
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@ -94,6 +94,7 @@ static const help_item static_help_list[] =
" pcatmemd <address>[,<cpu>] -- query which PC wrote to a given data memory address for the current CPU\n"
" pcatmemi <address>[,<cpu>] -- query which PC wrote to a given I/O memory address for the current CPU\n"
" (Note: you can also query this info by right clicking in a memory window\n"
" rewind[rw] -- go back in time by loading the most recent rewind state"
" statesave[ss] <filename> -- save a state file for the current driver\n"
" stateload[sl] <filename> -- load a state file for the current driver\n"
" snap [<filename>] -- save a screen snapshot.\n"
@ -454,6 +455,19 @@ static const help_item static_help_list[] =
"pcatmem 400000\n"
" Print which PC wrote this CPU's memory location 0x400000.\n"
},
{
"rewind[rw]",
"\n"
" rewind[rw]"
"\n"
"The rewind command loads the most recent RAM-based state. Rewind states, when enabled, are "
"saved when \"step\", \"over\", or \"out\" command gets executed, storing the machine state as "
"of the moment before actually steping. Consecutively loading rewind states can work like "
"reverse execution. Depending on which steps forward were taken previously, the bahavior can "
"be similar to GDB's \"reverse-stepi\" or \"reverse-next\". All output for this command is "
"currently echoed into the running machine window. Previous memory and PC tracking statistics "
"are cleared, actual reverse execution does not occur.\n"
},
{
"statesave[ss]",
"\n"
@ -472,7 +486,7 @@ static const help_item static_help_list[] =
{
"stateload[sl]",
"\n"
" stateload[ss] <filename>\n"
" stateload[sl] <filename>\n"
"\n"
"The stateload command retrieves a save state from disk. "
"The given state file gets read from the standard state directory (sta), and gets .sta to it - "