2002-08-22 Chris Demetriou <cgd@broadcom.com>

        * compare_igen_models: New script.

diff --git a/sim/igen/ChangeLog b/sim/igen/ChangeLog
index 8ef6284daa7866b9bc02870b4d1290923f2cd9f7..436ba3b85342310adea41be78602697d7270b4d0 100644 (file)
--- a/sim/igen/ChangeLog
+++ b/sim/igen/ChangeLog
@@ -1,3 +1,7 @@
+2002-08-22  Chris Demetriou  <cgd@broadcom.com>
+
+       * compare_igen_models: New script.
+
 2002-06-17  Andrew Cagney  <cagney@redhat.com>
 
        * gen.c (gen_entry_expand_opcode): Initialize ``value'' to -1 and

diff --git a/sim/igen/compare_igen_models b/sim/igen/compare_igen_models
new file mode 100755 (executable)
index 0000000..3c3e46a
--- /dev/null
+++ b/sim/igen/compare_igen_models
@@ -0,0 +1,113 @@
+#!/bin/sh
+
+# Script to compare functions and instructions used by different igen models.
+# Copyright (C) 2002 Free Software Foundation, Inc.
+# Contributed by Broadcom Corporation (SiByte).
+#
+# This file is part of GDB, the GNU debugger.
+# 
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+# 
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+# This is a simple-minded script to compare the functions and instructions
+# listed for two different models in one or more .igen files.
+#
+# It was intended to be useful to help factor models into common subsets.
+#
+# Things to note:
+#
+#    * igen include directives are not processed!
+#
+#    * functions and instructions with multiple definitions (e.g., based
+#      on model names) are treated as being different.  In other words,
+#      if two models have different functions named 'foo', this
+#      script will say that one has one of the function definitions, and
+#      the other has the other.
+
+if [ "$#" -lt 2 ]; then
+       echo "usage: $0 model1 model2 [file ...]" 1>&2
+       exit 1
+fi
+model1="$1"
+model2="$2"
+shift; shift
+
+gawk -v model1="$model1" -v model2="$model2" -F: -- '
+BEGIN {
+       thang_count = 0
+}
+function thang_has_model(t, m) {
+#      printf("thang_has_model(%s, %s) (@ %s:%d)\n", t, m,
+#             thangs[t,"file"], thangs[t,"line"]);
+       if (thangs[t,"nmodels"] == 0) return 1;
+
+       for (j = 0; j < thangs[t,"nmodels"]; j++) {
+#              printf("\tmodel \"%s\"\n", thangs[t,"models",j]);
+               if (thangs[t,"models",j] == m) return 1;
+       }
+#      printf("\t-> 0\n");
+       return 0
+}
+function compare_models(m1, m2) {
+#      printf("compare_models(%s, %s)\n", m1, m2);
+       seen_any=0
+       for (i = 0; i < thang_count; i++) {
+               if (thang_has_model(i, m1) && !thang_has_model(i, m2)) {
+                       if (!seen_any) {
+                               printf("Things in %s but not in %s:\n", m1, m2);
+                               seen_any = 1
+                       }
+                       printf("%s:%d: %s\n", thangs[i,"file"],
+                              thangs[i,"line"], thangs[i,"contents"]);
+               }
+       }
+}
+$0 ~ /^:/ && $2 == "model" {
+       # ignore.
+       # print "model " $0
+}
+($0 ~ /^:/ && $2 == "function") || \
+($0 ~ /^:/ && $2 == "internal") || \
+($0 ~ /^[0-9]/) {
+       # a function, internal, or instruction.
+
+       current_thang = thang_count
+       thang_count++
+
+       thangs[current_thang,"file"] = FILENAME
+       thangs[current_thang,"line"] = NR
+       thangs[current_thang,"contents"] = $0
+       thangs[current_thang,"nmodels"] = 0
+
+       if ($0 ~ /^:/) {
+               thangs[current_thang,"type"] = $2
+       } else {
+               thangs[current_thang,"type"] = "instruction"
+       }
+}
+$0 ~ /^\*/ {
+       split(substr($1, 2), tmp_models, /,/)
+       for (key in tmp_models) {
+               current_model = thangs[current_thang,"nmodels"]
+               thangs[current_thang,"nmodels"]++
+               thangs[current_thang,"models",current_model] = tmp_models[key]
+       }
+}
+END {
+       compare_models(model1, model2)
+       if (seen_any) printf("\n");
+       compare_models(model2, model1)
+}' "$@"
+
+exit "$?"