gdb: Store an x86_xsave_layout in i386_gdbarch_tdep.

This structure is fetched from the current target in i386_gdbarch_init
via a new "fetch_x86_xsave_layout" target method.

Approved-By: Simon Marchi <simon.marchi@efficios.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/gdb/target.h b/gdb/target.h
index 0cea955..12851f2 100644
--- a/gdb/target.h
+++ b/gdb/target.h
@@ -86,6 +86,7 @@ typedef const gdb_byte const_gdb_byte;
 #include "disasm-flags.h"
 #include "tracepoint.h"
 #include "gdbsupport/fileio.h"
+#include "gdbsupport/x86-xstate.h"
 
 #include "gdbsupport/break-common.h" /* For enum target_hw_bp_type.  */
 
@@ -1325,6 +1326,10 @@ struct target_ops
     virtual bool store_memtags (CORE_ADDR address, size_t len,
 				const gdb::byte_vector &tags, int type)
       TARGET_DEFAULT_NORETURN (tcomplain ());
+
+    /* Return the x86 XSAVE extended state area layout.  */
+    virtual x86_xsave_layout fetch_x86_xsave_layout ()
+      TARGET_DEFAULT_RETURN (x86_xsave_layout ());
   };
 
 /* Deleter for std::unique_ptr.  See comments in
@@ -2305,6 +2310,8 @@ extern bool target_fetch_memtags (CORE_ADDR address, size_t len,
 extern bool target_store_memtags (CORE_ADDR address, size_t len,
 				  const gdb::byte_vector &tags, int type);
 
+extern x86_xsave_layout target_fetch_x86_xsave_layout ();
+
 /* Command logging facility.  */
 
 extern void target_log_command (const char *p);