diff --git a/frysk-core/frysk/proc/TestTaskObserverInstruction.java b/frysk-core/frysk/proc/TestTaskObserverInstruction.java index d5e3d2a..546a763 100644 --- a/frysk-core/frysk/proc/TestTaskObserverInstruction.java +++ b/frysk-core/frysk/proc/TestTaskObserverInstruction.java @@ -43,6 +43,9 @@ import frysk.testbed.TestLib; import frysk.testbed.Offspring; import frysk.testbed.SlaveOffspring; +import frysk.testbed.DaemonBlockedAtEntry; +import frysk.config.Config; + public class TestTaskObserverInstruction extends TestLib { public void testInstruction() @@ -136,6 +139,30 @@ public class TestTaskObserverInstruction extends TestLib assertTrue("InstructionObserver hit", instr.hit == 2); } + /** + * Tests stepping the very first instruction (actualy the start of the + * dynamic loader which is going to load the actual program). This is + * a nasty corner case since this isn't a "real step" but actually the + * kernel adjusting the task so that it will start running. + */ + public void testFirstInstructionAtEntry() + { + DaemonBlockedAtEntry daemon; + daemon = new DaemonBlockedAtEntry(Config.getPkgLibFile("funit-child")); + Task task = daemon.getMainTask(); + + InstructionObserver instr = new InstructionObserver(); + task.requestAddInstructionObserver(instr); + assertRunUntilStop("add InstructionObserver"); + assertTrue("InstructionObserver added", instr.added); + assertTrue("InstructionObserver hit", instr.hit == 1); + + daemon.requestUnblock(); + task.requestUnblock(instr); + assertRunUntilStop("step first instruction"); + assertTrue("InstructionObserver hit again", instr.hit == 2); + } + private class StepAttachedObserver implements TaskAttachedObserverXXX { private final InstructionObserver instr; diff --git a/frysk-core/frysk/proc/live/LinuxPtraceTaskState.java b/frysk-core/frysk/proc/live/LinuxPtraceTaskState.java index 3e590c4..9a71530 100644 --- a/frysk-core/frysk/proc/live/LinuxPtraceTaskState.java +++ b/frysk-core/frysk/proc/live/LinuxPtraceTaskState.java @@ -891,6 +891,10 @@ abstract class LinuxPtraceTaskState extends State { ((TaskObservation) i.next()).delete(); } + // Mark this LinuxPtraceTask as just started. See + // Running.handleTrapped for more explanation. + task.justStartedXXX = true; + if (task.notifyExeced() > 0) { return (task.syscallObservers.numberOfObservers() > 0 ? syscallBlockedInSyscallContinue