From 71909a50de2dd5154622c936179d97ec5220f872 Mon Sep 17 00:00:00 2001
From: Ali Saidi <saidi@eecs.umich.edu>
Date: Sun, 16 Dec 2007 03:48:13 -0500
Subject: [PATCH] CPU: Update where the simple cpus read their cpu id from the
 thread context to init() to make sure they read the right value. This fixes a
 bug with multi-processor full-system configurations.

--HG--
extra : convert_revision : 4f2801967a271b43817d88e147c2f80c4480b2c3
---
 src/cpu/simple/atomic.cc | 12 ++++++++----
 src/cpu/simple/base.cc   |  1 -
 src/cpu/simple/timing.cc |  3 ++-
 3 files changed, 10 insertions(+), 6 deletions(-)

diff --git a/src/cpu/simple/atomic.cc b/src/cpu/simple/atomic.cc
index aead5aada..4553c0ae2 100644
--- a/src/cpu/simple/atomic.cc
+++ b/src/cpu/simple/atomic.cc
@@ -79,12 +79,13 @@ void
 AtomicSimpleCPU::init()
 {
     BaseCPU::init();
+    cpuId = tc->readCpuId();
 #if FULL_SYSTEM
     for (int i = 0; i < threadContexts.size(); ++i) {
         ThreadContext *tc = threadContexts[i];
 
         // initialize CPU, including PC
-        TheISA::initCPU(tc, tc->readCpuId());
+        TheISA::initCPU(tc, cpuId);
     }
 #endif
     if (hasPhysMemPort) {
@@ -93,6 +94,9 @@ AtomicSimpleCPU::init()
         physmemPort.getPeerAddressRanges(pmAddrList, snoop);
         physMemAddr = *pmAddrList.begin();
     }
+    ifetch_req.setThreadContext(cpuId, 0); // Add thread ID if we add MT
+    data_read_req.setThreadContext(cpuId, 0); // Add thread ID here too
+    data_write_req.setThreadContext(cpuId, 0); // Add thread ID here too
 }
 
 bool
@@ -159,9 +163,6 @@ AtomicSimpleCPU::AtomicSimpleCPU(Params *p)
     icachePort.snoopRangeSent = false;
     dcachePort.snoopRangeSent = false;
 
-    ifetch_req.setThreadContext(cpuId, 0); // Add thread ID if we add MT
-    data_read_req.setThreadContext(cpuId, 0); // Add thread ID here too
-    data_write_req.setThreadContext(cpuId, 0); // Add thread ID here too
 }
 
 
@@ -240,6 +241,9 @@ AtomicSimpleCPU::takeOverFrom(BaseCPU *oldCPU)
     }
     assert(threadContexts.size() == 1);
     cpuId = tc->readCpuId();
+    ifetch_req.setThreadContext(cpuId, 0); // Add thread ID if we add MT
+    data_read_req.setThreadContext(cpuId, 0); // Add thread ID here too
+    data_write_req.setThreadContext(cpuId, 0); // Add thread ID here too
 }
 
 
diff --git a/src/cpu/simple/base.cc b/src/cpu/simple/base.cc
index ad7b14be3..367f38b89 100644
--- a/src/cpu/simple/base.cc
+++ b/src/cpu/simple/base.cc
@@ -91,7 +91,6 @@ BaseSimpleCPU::BaseSimpleCPU(Params *p)
 
     threadContexts.push_back(tc);
 
-    cpuId = tc->readCpuId();
 
     fetchOffset = 0;
     stayAtPC = false;
diff --git a/src/cpu/simple/timing.cc b/src/cpu/simple/timing.cc
index 8d6a169ab..2f3ee5c73 100644
--- a/src/cpu/simple/timing.cc
+++ b/src/cpu/simple/timing.cc
@@ -57,12 +57,13 @@ void
 TimingSimpleCPU::init()
 {
     BaseCPU::init();
+    cpuId = tc->readCpuId();
 #if FULL_SYSTEM
     for (int i = 0; i < threadContexts.size(); ++i) {
         ThreadContext *tc = threadContexts[i];
 
         // initialize CPU, including PC
-        TheISA::initCPU(tc, tc->readCpuId());
+        TheISA::initCPU(tc, cpuId);
     }
 #endif
 }
-- 
2.30.2