[XenAccess-devel] Exposing symbol map functions

[<hi...@cc...>]

Here's a small patch that adds xa_symbol_to_address
to the public API.  It simply redirects to the appropriate
symbol translation functions in the linux and windows
layers.

There are times when I want to know the address of a
symbol without mapping it.

-Jim

Index: xa_util.c
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
--- xa_util.c   (revision 99)
+++ xa_util.c   (working copy)
@@ -163,6 +163,17 @@
      }
  }

+int xa_symbol_to_address (
+       xa_instance_t* instance, char* sym, uint32_t* vaddr)
+{
+       if(XA_OS_LINUX =3D=3D instance->os_type)
+               return linux_system_map_symbol_to_address(instance, =20
sym, vaddr);
+       else if(XA_OS_WINDOWS =3D=3D instance->os_type)
+               return windows_symbol_to_address(instance, sym, vaddr);
+       else
+               return XA_FAILURE;
+}
+
  int xa_get_bit (unsigned long reg, int bit)
  {
      unsigned long mask =3D 1 << bit;
Index: xenaccess.h
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
--- xenaccess.h (revision 99)
+++ xenaccess.h (working copy)
@@ -334,6 +334,16 @@
  int xa_read_long_long_mach (
          xa_instance_t *instance, uint32_t maddr, uint64_t *value);

+/**
+ * Returns the address of a symbol.
+ *
+ * @param[in] instance XenAccess instance
+ * @param[in] sym Kernel symbol (must be exported)
+ * @param[out] vaddr The virtual address of the symbol
+ */
+int xa_symbol_to_address (
+        xa_instance_t *instance, char* sym, uint32_t *vaddr);
+
  /*-----------------------------
   * Linux-specific functionality
   */