sim: Add relative break scheduling

Add schedRelBreak() function, executable within a debugger, that sets a
breakpoint by relative rather than absolute tick.

2 files changed, 13 insertions, 0 deletions

diff --git a/src/sim/debug.cc b/src/sim/debug.cc
index b3d73eff7..9fab75108 100644
--- a/src/sim/debug.cc
+++ b/src/sim/debug.cc
@@ -90,6 +90,12 @@ schedBreak(Tick when)
 }
 
 void
+schedRelBreak(Tick delta)
+{
+    schedBreak(curTick() + delta);
+}
+
+void
 breakAtKernelFunction(const char* funcName)
 {
     System* curSystem = System::systemList[0];
diff --git a/src/sim/debug.hh b/src/sim/debug.hh
index 0d324698d..8587325e1 100644
--- a/src/sim/debug.hh
+++ b/src/sim/debug.hh
@@ -45,6 +45,13 @@
 void schedBreak(Tick when);
 
 /**
+ * Cause the simulator to execute a breakpoint
+ * relative to the current tick.
+ * @param delta the number of ticks to execute until breaking
+ */
+void schedRelBreak(Tick delta);
+
+/**
  * Cause the simulator to execute a breakpoint when
  * the given kernel function is reached
  * @param funcName the name of the kernel function at which to break