Get rid of the Unallocated thread context state.

Basically merge it in with Halted.
Also had to get rid of a few other functions that
called ThreadContext::deallocate(), including:
 - InOrderCPU's setThreadRescheduleCondition.
 - ThreadContext::exit().  This function was there to avoid terminating
   simulation when one thread out of a multi-thread workload exits, but we
   need to find a better (non-cpu-centric) way.

1 files changed, 7 insertions, 2 deletions

diff --git a/src/sim/syscall_emul.cc b/src/sim/syscall_emul.cc
index 5fe30c269..f0a693db0 100644
--- a/src/sim/syscall_emul.cc
+++ b/src/sim/syscall_emul.cc
@@ -42,6 +42,7 @@
 #include "cpu/base.hh"
 #include "mem/page_table.hh"
 #include "sim/process.hh"
+#include "sim/system.hh"
 
 #include "sim/sim_exit.hh"
 
@@ -91,9 +92,13 @@ SyscallReturn
 exitFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
          ThreadContext *tc)
 {
-    if (tc->exit()) {
+    if (process->system->numRunningContexts() == 1) {
+        // Last running context... exit simulator
         exitSimLoop("target called exit()",
-                process->getSyscallArg(tc, 0) & 0xff);
+                    process->getSyscallArg(tc, 0) & 0xff);
+    } else {
+        // other running threads... just halt this one
+        tc->halt();
     }
 
     return 1;