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Improved help message for "shell" command

This commit is contained in:
Clifford Wolf 2013-02-28 16:53:34 +01:00
parent a5c4bf2161
commit cd71c70b4f
1 changed files with 30 additions and 0 deletions
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30
kernel/driver.cc
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@ -145,6 +145,14 @@ static const char *create_prompt(RTLIL::Design *design)
static void shell(RTLIL::Design *design) static void shell(RTLIL::Design *design)
{ {
static bool recursion_detect = false;
if (recursion_detect) {
log("Already in interactive shell.\n");
return;
}
recursion_detect = true;
log_cmd_error_throw = true; log_cmd_error_throw = true;
rl_readline_name = "yosys"; rl_readline_name = "yosys";
@ -167,6 +175,7 @@ static void shell(RTLIL::Design *design)
} }
} }
recursion_detect = false;
log_cmd_error_throw = false; log_cmd_error_throw = false;
} }
@ -180,6 +189,27 @@ struct ShellPass : public Pass {
log("in a script to interrupt the script at a certain point and allow for\n"); log("in a script to interrupt the script at a certain point and allow for\n");
log("interactive inspection or manual synthesis of the design at this point.\n"); log("interactive inspection or manual synthesis of the design at this point.\n");
log("\n"); log("\n");
log("The command prompt of the interactive shell indicates the current\n");
log("selection (see 'help select'):\n");
log("\n");
log(" yosys>\n");
log(" the entire design is selected\n");
log("\n");
log(" yosys*>\n");
log(" only part of the design is selected\n");
log("\n");
log(" yosys [modname]>\n");
log(" the entire module 'modname' is selected using 'select -module modname'\n");
log("\n");
log(" yosys [modname]*>\n");
log(" only part of current module 'modname' is selected\n");
log("\n");
log("When in interavtive shell, some errors (e.g. invalid command arguments)\n");
log("do not terminate yosys but return to the command prompt.\n");
log("\n");
log("This command is the default action if nothing else has been specified\n");
log("on the command line.\n");
log("\n");
} }
virtual void execute(std::vector<std::string>, RTLIL::Design *design) { virtual void execute(std::vector<std::string>, RTLIL::Design *design) {
shell(design); shell(design);