diff options
| -rw-r--r-- | src/sim/main.cc | 50 |
1 files changed, 48 insertions, 2 deletions
diff --git a/src/sim/main.cc b/src/sim/main.cc index 741926056..f3b74489d 100644 --- a/src/sim/main.cc +++ b/src/sim/main.cc @@ -41,7 +41,7 @@ #include <libgen.h> #include <stdlib.h> #include <signal.h> -#include <unistd.h> +#include <getopt.h> #include <list> #include <string> @@ -113,6 +113,31 @@ abortHandler(int sigtype) #endif } +/// Simulator executable name +char *myProgName = ""; + +/// Show brief help message. +void +showBriefHelp(ostream &out) +{ + char *prog = basename(myProgName); + + ccprintf(out, "Usage:\n"); + ccprintf(out, +"%s [-p <path>] [-i ] [-h] <config file>\n" +"\n" +" -p, --path <path> prepends <path> to PYTHONPATH instead of using\n" +" built-in zip archive. Useful when developing/debugging\n" +" changes to built-in Python libraries, as the new Python\n" +" can be tested without building a new m5 binary.\n\n" +" -i, --interactive forces entry into interactive mode after the supplied\n" +" script is executed (just like the -i option to the\n" +" Python interpreter).\n\n" +" -h Prints this help\n\n" +" <configfile> config file name (ends in .py)\n\n", + prog); + +} const char *briefCopyright = "Copyright (c) 2001-2006\n" @@ -145,6 +170,9 @@ extern "C" { void init_main(); } int main(int argc, char **argv) { + // Saze off program name + myProgName = argv[0]; + sayHello(cerr); signal(SIGFPE, SIG_IGN); // may occur on misspeculated paths @@ -161,9 +189,19 @@ main(int argc, char **argv) char *pythonpath = argv[0]; bool interactive = false; + bool show_help = false; bool getopt_done = false; + int opt_index = 0; + + static struct option long_options[] = { + {"python", 1, 0, 'p'}, + {"interactive", 0, 0, 'i'}, + {"help", 0, 0, 'h'}, + {0,0,0,0} + }; + do { - switch (getopt(argc, argv, "+p:i")) { + switch (getopt_long(argc, argv, "+p:ih", long_options, &opt_index)) { // -p <path> prepends <path> to PYTHONPATH instead of // using built-in zip archive. Useful when // developing/debugging changes to built-in Python @@ -180,6 +218,9 @@ main(int argc, char **argv) interactive = true; break; + case 'h': + show_help = true; + break; case -1: getopt_done = true; break; @@ -189,6 +230,11 @@ main(int argc, char **argv) } } while (!getopt_done); + if (show_help) { + showBriefHelp(cerr); + exit(1); + } + // Fix up argc & argv to hide arguments we just processed. // getopt() sets optind to the index of the first non-processed // argv element. |