tinyriscv-openocd/tools/rlink_make_speed_table/rlink_make_speed_table.pl

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Perl
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#!/bin/perl
#***************************************************************************
#* Copyright (C) 2008 Lou Deluxe *
#* lou.openocd012@fixit.nospammail.net *
#* *
#* 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 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, write to the *
#* Free Software Foundation, Inc., *
#* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
#***************************************************************************
# A simple utility to read a list of files (names composed by numeric prescaler arguments) and compose a C source file defining data structures which hold the binary data read from those files.
my @speed_table = ();
print <<HEADER;
/* This file was created automatically by the following script:
* $0
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "rlink.h"
#include "rlink_st7.h"
HEADER
for $prescaler (sort {$b <=> $a} @ARGV) {
my(@ary) = (
byte_array_from_file(${prescaler} . "_init.dtc"),
byte_array_from_file(${prescaler} . "_call.dtc")
);
for $i (@ary) {
$i = sprintf("%d", $i);
}
$bytes = join(', ', @ary);
$bytes =~ s/(^|\s)(.{70}?\S*)/\2\n/go; # break up long lines
$bytes =~ s/\n +/\n/go;
$bytes =~ s/(^|\n)/\1\t/go; # format nicely
printf("static const uint8_t dtc_%d[] = {\n%s\n};\n\n", $prescaler, $bytes);
push(@speed_table, sprintf("\tdtc_%d, sizeof(dtc_%d), (ST7_FOSC * 2) / (1000 * %d), %d\n", $prescaler, $prescaler, $prescaler, $prescaler));
}
printf("const struct rlink_speed_table rlink_speed_table[] = { {\n%s} };\n\n", join("}, {\n", @speed_table));
printf("const size_t rlink_speed_table_size = ARRAY_SIZE(rlink_speed_table);\n\n");
sub byte_array_from_file {
my($filename) = @_;
my(@array, $text, $i) = ();
open(IN, '<', $filename) || die "$filename: $!";
undef($/);
$text = <IN>;
close(IN);
for($i = 0; $i < length($text); $i++) {
push(@array, ord(substr($text, $i, 1)));
}
@array;
}