cpu: Fix checker cpu instantiation

This change uses the params as instantiated from the default
constructor to create the checker cpu. If any of these parameters are
invalid for the checker cpu, the simulation will exit with a warning.

Change-Id: I0e58ed096c9ea5f413f2e9b64d8d184d9b0fc84e
Signed-off-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/21079
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Maintainer: Andreas Sandberg <andreas.sandberg@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>

1 files changed, 8 insertions, 38 deletions

diff --git a/src/cpu/o3/checker.cc b/src/cpu/o3/checker.cc
index 16c5a8704..1713da7c1 100644
--- a/src/cpu/o3/checker.cc
+++ b/src/cpu/o3/checker.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2011 ARM Limited
+ * Copyright (c) 2011, 2019 ARM Limited
  * All rights reserved
  *
  * The license below extends only to copyright in the software and shall
@@ -48,45 +48,15 @@
 template
 class Checker<O3CPUImpl>;
 
-////////////////////////////////////////////////////////////////////////
-//
-//  CheckerCPU Simulation Object
-//
 O3Checker *
 O3CheckerParams::create()
 {
-    O3Checker::Params *params = new O3Checker::Params();
-    params->name = name;
-    params->numThreads = numThreads;
-    params->max_insts_any_thread = 0;
-    params->max_insts_all_threads = 0;
-    params->max_loads_any_thread = 0;
-    params->max_loads_all_threads = 0;
-    params->exitOnError = exitOnError;
-    params->updateOnError = updateOnError;
-    params->warnOnlyOnLoadError = warnOnlyOnLoadError;
-    params->clk_domain = clk_domain;
-    params->tracer = tracer;
-    // Hack to touch all parameters.  Consider not deriving Checker
-    // from BaseCPU..it's not really a CPU in the end.
-    Counter temp;
-    temp = max_insts_any_thread;
-    temp = max_insts_all_threads;
-    temp = max_loads_any_thread;
-    temp = max_loads_all_threads;
-    temp++;
-    Tick temp2 = progress_interval;
-    params->progress_interval = 0;
-    temp2++;
+    // The checker should check all instructions executed by the main
+    // cpu and therefore any parameters for early exit don't make much
+    // sense.
+    fatal_if(max_insts_any_thread || max_insts_all_threads ||
+             max_loads_any_thread || max_loads_all_threads ||
+             progress_interval, "Invalid checker parameters");
 
-    params->itb = itb;
-    params->dtb = dtb;
-    params->isa = isa;
-    params->system = system;
-    params->cpu_id = cpu_id;
-    params->profile = profile;
-    params->workload = workload;
-
-    O3Checker *cpu = new O3Checker(params);
-    return cpu;
+    return new O3Checker(this);
 }