summaryrefslogtreecommitdiff
path: root/libjava/gnu/gcj/jvmti/Breakpoint.java
diff options
context:
space:
mode:
authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/gnu/gcj/jvmti/Breakpoint.java
downloadcbb-gcc-4.6.4-554fd8c5195424bdbcabf5de30fdc183aba391bd.tar.bz2
cbb-gcc-4.6.4-554fd8c5195424bdbcabf5de30fdc183aba391bd.tar.xz
obtained gcc-4.6.4.tar.bz2 from upstream website;upstream
verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository.
Diffstat (limited to 'libjava/gnu/gcj/jvmti/Breakpoint.java')
-rw-r--r--libjava/gnu/gcj/jvmti/Breakpoint.java73
1 files changed, 73 insertions, 0 deletions
diff --git a/libjava/gnu/gcj/jvmti/Breakpoint.java b/libjava/gnu/gcj/jvmti/Breakpoint.java
new file mode 100644
index 000000000..00b325aec
--- /dev/null
+++ b/libjava/gnu/gcj/jvmti/Breakpoint.java
@@ -0,0 +1,73 @@
+// Breakpoint.java - a base class for interpreter breakpoints
+
+/* Copyright (C) 2006, 2007 Free Software Foundation
+
+ This file is part of libgcj.
+
+This software is copyrighted work licensed under the terms of the
+Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
+details. */
+
+package gnu.gcj.jvmti;
+
+import gnu.gcj.RawDataManaged;
+
+/**
+ * Base class representing a type of breakpoint in the interpreter.
+ * This class deals with saving insns and installing and
+ * uninstalling insns in the interpreter for all breakpoint classes.
+ *
+ * @author Keith Seitz (keiths@redhat.com)
+ */
+public abstract class Breakpoint
+{
+ // Location of this breakpoint
+ protected long method;
+ protected long location;
+
+ // The original instruction that this breakpoint replaced
+ private RawDataManaged data;
+
+ /**
+ * Constructs a new Breakpoint
+ *
+ * @param method the method in which to set the breakpoint
+ * @param location the location at which to set the breakpoint
+ */
+ public Breakpoint (long method, long location)
+ {
+ this.method = method;
+ this.location = location;
+ }
+
+ public Breakpoint ()
+ {
+ }
+
+ private native void _save_insn ();
+
+ /**
+ * Installs the breakpoint into the interpreter
+ */
+ public native void install ();
+
+ /**
+ * Removes the breakpoint from the interpreter, re-installing
+ * the original instruction.
+ */
+ public native void remove ();
+
+ /**
+ * Returns the original instruction at the location where
+ * this breakpoint was set
+ */
+ public RawDataManaged getInsn ()
+ {
+ return data;
+ }
+
+ /**
+ * Execute the actions of this breakpoint
+ */
+ public abstract void execute ();
+}