util: add m5_fail op.

Used as a command in full-system scripts helps the user ensure the benchmarks have finished successfully.

For example, one can use:

    /path/to/benchmark args || /sbin/m5 fail 1

and thus ensure gem5 will exit with an error if the benchmark fails.

1 files changed, 7 insertions, 0 deletions

diff --git a/src/sim/pseudo_inst.cc b/src/sim/pseudo_inst.cc
index aafa5672b..a57bdb2ce 100644
--- a/src/sim/pseudo_inst.cc
+++ b/src/sim/pseudo_inst.cc
@@ -219,6 +219,13 @@ m5exit(ThreadContext *tc, Tick delay)
 }
 
 void
+m5fail(ThreadContext *tc, Tick delay, uint64_t code)
+{
+    Tick when = curTick() + delay * SimClock::Int::ns;
+    exitSimLoop("m5_fail instruction encountered", code, when);
+}
+
+void
 loadsymbol(ThreadContext *tc)
 {
     if (!FullSystem)