From 08754488a30da178effd0414f198462bf268d715 Mon Sep 17 00:00:00 2001
From: Andreas Sandberg <andreas.sandberg@arm.com>
Date: Mon, 14 Dec 2015 17:10:36 +0000
Subject: sim: Add an option to forward work items to Python

There are cases where we want the Python world to handle work items
instead of the C++ world. However, that's currently not possible. This
changeset adds the forward_work_items option to the System class. Then
it is set to True, work items will generate workbegin/workend
simulation exists with the work item ID as the exit code and the old
C++ handling is completely bypassed.

--HG--
extra : rebase_source : 8de637a744fc4b6ff2bc763f00cdf8ddf2bff885
---
 src/sim/pseudo_inst.cc | 22 ++++++++++++++++------
 1 file changed, 16 insertions(+), 6 deletions(-)

(limited to 'src/sim/pseudo_inst.cc')

diff --git a/src/sim/pseudo_inst.cc b/src/sim/pseudo_inst.cc
index fb19b21b1..260ffec6e 100644
--- a/src/sim/pseudo_inst.cc
+++ b/src/sim/pseudo_inst.cc
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2010-2012 ARM Limited
+ * Copyright (c) 2010-2012, 2015 ARM Limited
  * All rights reserved
  *
  * The license below extends only to copyright in the software and shall
@@ -616,13 +616,18 @@ void
 workbegin(ThreadContext *tc, uint64_t workid, uint64_t threadid)
 {
     DPRINTF(PseudoInst, "PseudoInst::workbegin(%i, %i)\n", workid, threadid);
-    tc->getCpuPtr()->workItemBegin();
     System *sys = tc->getSystemPtr();
     const System::Params *params = sys->params();
-    sys->workItemBegin(threadid, workid);
 
-    DPRINTF(WorkItems, "Work Begin workid: %d, threadid %d\n", workid, 
+    if (params->exit_on_work_items) {
+        exitSimLoop("workbegin", static_cast<int>(workid));
+        return;
+    }
+
+    DPRINTF(WorkItems, "Work Begin workid: %d, threadid %d\n", workid,
             threadid);
+    tc->getCpuPtr()->workItemBegin();
+    sys->workItemBegin(threadid, workid);
 
     //
     // If specified, determine if this is the specific work item the user
@@ -674,12 +679,17 @@ void
 workend(ThreadContext *tc, uint64_t workid, uint64_t threadid)
 {
     DPRINTF(PseudoInst, "PseudoInst::workend(%i, %i)\n", workid, threadid);
-    tc->getCpuPtr()->workItemEnd();
     System *sys = tc->getSystemPtr();
     const System::Params *params = sys->params();
-    sys->workItemEnd(threadid, workid);
+
+    if (params->exit_on_work_items) {
+        exitSimLoop("workend", static_cast<int>(workid));
+        return;
+    }
 
     DPRINTF(WorkItems, "Work End workid: %d, threadid %d\n", workid, threadid);
+    tc->getCpuPtr()->workItemEnd();
+    sys->workItemEnd(threadid, workid);
 
     //
     // If specified, determine if this is the specific work item the user
-- 
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