xen: xensyms support

Export Xen symbols to dom0 via /proc/xen/xensyms (similar to
/proc/kallsyms).

Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Reviewed-by: David Vrabel <david.vrabel@citrix.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>

1 files changed, 18 insertions, 0 deletions

diff --git a/include/xen/interface/platform.h b/include/xen/interface/platform.h
index 5cc49ea8d840..8e035871360e 100644
--- a/include/xen/interface/platform.h
+++ b/include/xen/interface/platform.h
@@ -474,6 +474,23 @@ struct xenpf_core_parking {
 };
 DEFINE_GUEST_HANDLE_STRUCT(xenpf_core_parking);
 
+#define XENPF_get_symbol      63
+struct xenpf_symdata {
+        /* IN/OUT variables */
+        uint32_t        namelen; /* size of 'name' buffer */
+
+        /* IN/OUT variables */
+        uint32_t        symnum; /* IN:  Symbol to read                       */
+                                /* OUT: Next available symbol. If same as IN */
+                                /* then  we reached the end                  */
+
+        /* OUT variables */
+        GUEST_HANDLE(char) name;
+        uint64_t        address;
+        char            type;
+};
+DEFINE_GUEST_HANDLE_STRUCT(xenpf_symdata);
+
 struct xen_platform_op {
         uint32_t cmd;
         uint32_t interface_version; /* XENPF_INTERFACE_VERSION */
@@ -495,6 +512,7 @@ struct xen_platform_op {
                 struct xenpf_cpu_hotadd        cpu_add;
                 struct xenpf_mem_hotadd        mem_add;
                 struct xenpf_core_parking      core_parking;
+                struct xenpf_symdata           symdata;
                 uint8_t                        pad[128];
         } u;
 };