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-rw-r--r--src/sim/main.cc50
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.