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#!/bin/sh
# Script to compare functions and instructions used by different igen models.
# Copyright (C) 2002-2021 Free Software Foundation, Inc.
# Contributed by Chris Demetriou of 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 3 of the License, 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, see <http://www.gnu.org/licenses/>.
# 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 "$?"
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