changeset:   10252:37d917e78e64
tag:         tip
user:        Severin Wischmann <wiseveri@student.ethz.ch>
date:        Mon Jul 07 09:45:47 2014 +0200
summary:     Implementation of exit_group on X86.

diff -r 878f2f30b12d -r 37d917e78e64 src/sim/syscall_emul.cc
--- a/src/sim/syscall_emul.cc	Wed Jul 02 13:19:13 2014 -0400
+++ b/src/sim/syscall_emul.cc	Mon Jul 07 09:45:47 2014 +0200
@@ -132,11 +132,23 @@
 exitGroupFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
               ThreadContext *tc)
 {
-    // really should just halt all thread contexts belonging to this
-    // process in case there's another process running...
-    int index = 0;
-    exitSimLoop("target called exit()",
-                process->getSyscallArg(tc, index) & 0xff);
+    if (process->system->numRunningContexts() == 1) {
+        // Last running context... exit simulator
+        int index = 0;
+        exitSimLoop("target called exit()",
+                    process->getSyscallArg(tc, index) & 0xff);
+    } else {
+        // other running processes... halt all threads belonging to this one
+        for (auto i: process->contextIds) {
+            process->system->getThreadContext(i)->halt();
+        }
+        if (!process->system->numRunningContexts()) {
+            // all remaining threads belonged to this process... exit simulator
+            int index = 0;
+            exitSimLoop("target called exit()",
+                        process->getSyscallArg(tc, index) & 0xff);
+        }
+    }
 
     return 1;
 }