Fix TCL error in gdb.python/py-format-string.exp.

[deliverable/binutils-gdb.git] / sim / common / sim-model.h

diff --git a/sim/common/sim-model.h b/sim/common/sim-model.h
index 5baa5ce1d9459caeddf6d5b8967fb9ee6da8b801..7e10e12a8f84a88290a377c5b18d9874960af954 100644 (file)
--- a/sim/common/sim-model.h
+++ b/sim/common/sim-model.h
@@ -1,5 +1,5 @@
 /* Architecture, machine, and model support.
-   Copyright (C) 1997-2015 Free Software Foundation, Inc.
+   Copyright (C) 1997-2020 Free Software Foundation, Inc.
    Contributed by Cygnus Support.
 
 This file is part of GDB, the GNU debugger.
@@ -21,6 +21,11 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
    architecture = one of sparc, mips, sh, etc.
    in the sparc architecture, mach = one of v6, v7, v8, sparclite, etc.
    in the v8 mach, model = one of supersparc, etc.
+
+   To use the model framework, your arch needs to do a few things:
+   (1) Call SIM_AC_OPTION_DEFAULT_MODEL() in configure.ac.
+   (2) Define enum mach_attr in sim-main.h.
+   (3) Define sim_machs array (and all the callbacks it uses).
 */
 
 /* This file is intended to be included by sim-basics.h.  */
@@ -42,6 +47,15 @@ typedef struct {
 #define MAX_UNITS 1
 #endif
 
+#ifndef WITH_DEFAULT_MODEL
+/* Just a stub for ports that do not define models.  */
+enum mach_attr { _MACH_NONE };
+# define WITH_DEFAULT_MODEL NULL
+# define WITH_MODEL_P 0
+#else
+# define WITH_MODEL_P 1
+#endif
+
 typedef int (MODEL_FN) (sim_cpu *, void *);
 
 typedef struct {