stdlib,configs: Adding a config to run NPB using stdlib.

This change adds a config file to execute NPB benchmarks using
gem5 stdlib. Also, it adds a new test for the same.

Signed-off-by: Kaustav Goswami <kggoswami@ucdavis.edu>
Change-Id: I527b7d12be7ab43e61dde507095ebf9fa4b44867
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/52964
Reviewed-by: Bobby Bruce <bbruce@ucdavis.edu>
Maintainer: Bobby Bruce <bbruce@ucdavis.edu>
Tested-by: kokoro <noreply+kokoro@google.com>

tests/gem5/gem5_library_example_tests/test_gem5_library_examples.py

@@ -103,7 +103,34 @@ if os.access("/dev/kvm", mode=os.R_OK | os.W_OK):
             "gem5_library",
             "x86-parsec-benchmarks.py",
         ),
-        config_args=["--benchmark","blackscholes", "--size","simsmall"],
+        config_args=["--benchmark","blackscholes","--size","simsmall"],
+        valid_isas=(constants.x86_tag,),
+        protocol="MESI_Two_Level",
+        valid_hosts=constants.supported_hosts,
+        length=constants.long_tag,
+    )
+
+if os.access("/dev/kvm", mode=os.R_OK | os.W_OK):
+    # The x86-npb-benchmarks uses KVM cores, this test will therefore only be
+    # run on systems that support KVM.
+    gem5_verify_config(
+        name="test-gem5-library-example-x86-npb-benchmarks",
+        fixtures=(),
+        verifiers=(),
+        config=joinpath(
+            config.base_dir,
+            "configs",
+            "example",
+            "gem5_library",
+            "x86-npb-benchmarks.py",
+        ),
+        config_args=["--benchmark",
+            "bt",
+            "--size",
+            "A",
+            "--maxinsts",
+            "5000000000"
+        ],
         valid_isas=(constants.x86_tag,),
         protocol="MESI_Two_Level",
         valid_hosts=constants.supported_hosts,