diff options
Diffstat (limited to 'security/nss/lib/freebl/mpi/types.pl')
| -rwxr-xr-x | security/nss/lib/freebl/mpi/types.pl | 162 |
1 files changed, 0 insertions, 162 deletions
diff --git a/security/nss/lib/freebl/mpi/types.pl b/security/nss/lib/freebl/mpi/types.pl deleted file mode 100755 index 6933d0dfe..000000000 --- a/security/nss/lib/freebl/mpi/types.pl +++ /dev/null @@ -1,162 +0,0 @@ -#!/usr/bin/perl - -# -# types.pl - find recommended type definitions for digits and words -# -# This script scans the Makefile for the C compiler and compilation -# flags currently in use, and using this combination, attempts to -# compile a simple test program that outputs the sizes of the various -# unsigned integer types, in bytes. Armed with these, it finds all -# the "viable" type combinations for mp_digit and mp_word, where -# viability is defined by the requirement that mp_word be at least two -# times the precision of mp_digit. -# -# Of these, the one with the largest digit size is chosen, and -# appropriate typedef statements are written to standard output. - -# ***** BEGIN LICENSE BLOCK ***** -# Version: MPL 1.1/GPL 2.0/LGPL 2.1 -# -# The contents of this file are subject to the Mozilla Public License Version -# 1.1 (the "License"); you may not use this file except in compliance with -# the License. You may obtain a copy of the License at -# http://www.mozilla.org/MPL/ -# -# Software distributed under the License is distributed on an "AS IS" basis, -# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License -# for the specific language governing rights and limitations under the -# License. -# -# The Original Code is the MPI Arbitrary Precision Integer Arithmetic library. -# -# The Initial Developer of the Original Code is -# Michael J. Fromberger <sting@linguist.dartmouth.edu>. -# Portions created by the Initial Developer are Copyright (C) 2000 -# the Initial Developer. All Rights Reserved. -# -# Contributor(s): -# -# Alternatively, the contents of this file may be used under the terms of -# either the GNU General Public License Version 2 or later (the "GPL"), or -# the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), -# in which case the provisions of the GPL or the LGPL are applicable instead -# of those above. If you wish to allow use of your version of this file only -# under the terms of either the GPL or the LGPL, and not to allow others to -# use your version of this file under the terms of the MPL, indicate your -# decision by deleting the provisions above and replace them with the notice -# and other provisions required by the GPL or the LGPL. If you do not delete -# the provisions above, a recipient may use your version of this file under -# the terms of any one of the MPL, the GPL or the LGPL. -# -# ***** END LICENSE BLOCK ***** - -# $Id$ -# - -@_=split(/\//,$0);chomp($prog=pop(@_)); - -# The array of integer types to be considered... -@TYPES = ( - "unsigned char", - "unsigned short", - "unsigned int", - "unsigned long" -); - -# Macro names for the maximum unsigned value of each type -%TMAX = ( - "unsigned char" => "UCHAR_MAX", - "unsigned short" => "USHRT_MAX", - "unsigned int" => "UINT_MAX", - "unsigned long" => "ULONG_MAX" -); - -# Read the Makefile to find out which C compiler to use -open(MFP, "<Makefile") or die "$prog: Makefile: $!\n"; -while(<MFP>) { - chomp; - if(/^CC=(.*)$/) { - $cc = $1; - last if $cflags; - } elsif(/^CFLAGS=(.*)$/) { - $cflags = $1; - last if $cc; - } -} -close(MFP); - -# If we couldn't find that, use 'cc' by default -$cc = "cc" unless $cc; - -printf STDERR "Using '%s' as the C compiler.\n", $cc; - -print STDERR "Determining type sizes ... \n"; -open(OFP, ">tc$$.c") or die "$prog: tc$$.c: $!\n"; -print OFP "#include <stdio.h>\n\nint main(void)\n{\n"; -foreach $type (@TYPES) { - printf OFP "\tprintf(\"%%d\\n\", (int)sizeof(%s));\n", $type; -} -print OFP "\n\treturn 0;\n}\n"; -close(OFP); - -system("$cc $cflags -o tc$$ tc$$.c"); - -die "$prog: unable to build test program\n" unless(-x "tc$$"); - -open(IFP, "./tc$$|") or die "$prog: can't execute test program\n"; -$ix = 0; -while(<IFP>) { - chomp; - $size{$TYPES[$ix++]} = $_; -} -close(IFP); - -unlink("tc$$"); -unlink("tc$$.c"); - -print STDERR "Selecting viable combinations ... \n"; -while(($type, $size) = each(%size)) { - push(@ts, [ $size, $type ]); -} - -# Sort them ascending by size -@ts = sort { $a->[0] <=> $b->[0] } @ts; - -# Try all possible combinations, finding pairs in which the word size -# is twice the digit size. The number of possible pairs is too small -# to bother doing this more efficiently than by brute force -for($ix = 0; $ix <= $#ts; $ix++) { - $w = $ts[$ix]; - - for($jx = 0; $jx <= $#ts; $jx++) { - $d = $ts[$jx]; - - if($w->[0] == 2 * $d->[0]) { - push(@valid, [ $d, $w ]); - } - } -} - -# Sort descending by digit size -@valid = sort { $b->[0]->[0] <=> $a->[0]->[0] } @valid; - -# Select the maximum as the recommended combination -$rec = shift(@valid); - -printf("typedef %-18s mp_sign;\n", "char"); -printf("typedef %-18s mp_digit; /* %d byte type */\n", - $rec->[0]->[1], $rec->[0]->[0]); -printf("typedef %-18s mp_word; /* %d byte type */\n", - $rec->[1]->[1], $rec->[1]->[0]); -printf("typedef %-18s mp_size;\n", "unsigned int"); -printf("typedef %-18s mp_err;\n\n", "int"); - -printf("#define %-18s (CHAR_BIT*sizeof(mp_digit))\n", "DIGIT_BIT"); -printf("#define %-18s %s\n", "DIGIT_MAX", $TMAX{$rec->[0]->[1]}); -printf("#define %-18s (CHAR_BIT*sizeof(mp_word))\n", "MP_WORD_BIT"); -printf("#define %-18s %s\n\n", "MP_WORD_MAX", $TMAX{$rec->[1]->[1]}); -printf("#define %-18s (DIGIT_MAX+1)\n\n", "RADIX"); - -printf("#define %-18s \"%%0%dX\"\n", "DIGIT_FMT", (2 * $rec->[0]->[0])); - -exit 0; |