1 files changed, 84 insertions, 0 deletions
diff --git a/xen/include/xen/gcov.h b/xen/include/xen/gcov.h
new file mode 100644
index 0000000000..d695919762
--- /dev/null
+++ b/xen/include/xen/gcov.h
@@ -0,0 +1,84 @@
+/*
+ *  Profiling infrastructure declarations.
+ *
+ *  This file is based on gcc-internal definitions. Data structures are
+ *  defined to be compatible with gcc counterparts. For a better
+ *  understanding, refer to gcc source: gcc/gcov-io.h.
+ *
+ *    Copyright IBM Corp. 2009
+ *    Author(s): Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
+ *
+ *    Uses gcc-internal data definitions.
+ */
+
+#ifndef __XEN_GCOV_H__
+#define __XEN_GCOV_H__ __XEN_GCOV_H__
+
+/*
+ * Profiling data types used for gcc 3.4 and above - these are defined by
+ * gcc and need to be kept as close to the original definition as possible to
+ * remain compatible.
+ */
+
+typedef uint64_t gcov_type;
+
+/**
+ * struct gcov_fn_info - profiling meta data per function
+ * @ident: object file-unique function identifier
+ * @checksum: function checksum
+ * @n_ctrs: number of values per counter type belonging to this function
+ *
+ * This data is generated by gcc during compilation and doesn't change
+ * at run-time.
+ */
+struct gcov_fn_info
+{
+    unsigned int ident;
+    unsigned int checksum;
+    unsigned int n_ctrs[0];
+};
+
+/**
+ * struct gcov_ctr_info - profiling data per counter type
+ * @num: number of counter values for this type
+ * @values: array of counter values for this type
+ * @merge: merge function for counter values of this type (unused)
+ *
+ * This data is generated by gcc during compilation and doesn't change
+ * at run-time with the exception of the values array.
+ */
+struct gcov_ctr_info
+{
+    unsigned int num;
+    gcov_type *values;
+    void (*merge)(gcov_type *, unsigned int);
+};
+
+/**
+ * struct gcov_info - profiling data per object file
+ * @version: gcov version magic indicating the gcc version used for compilation
+ * @next: list head for a singly-linked list
+ * @stamp: time stamp
+ * @filename: name of the associated gcov data file
+ * @n_functions: number of instrumented functions
+ * @functions: function data
+ * @ctr_mask: mask specifying which counter types are active
+ * @counts: counter data per counter type
+ *
+ * This data is generated by gcc during compilation and doesn't change
+ * at run-time with the exception of the next pointer.
+ */
+struct gcov_info
+{
+    unsigned int              version;
+    struct gcov_info          *next;
+    unsigned int              stamp;
+    const char                *filename;
+    unsigned int              n_functions;
+    const struct gcov_fn_info *functions;
+    unsigned int              ctr_mask;
+    struct gcov_ctr_info      counts[0];
+};
+
+
+#endif /* __XEN_GCOV_H__ */