mirror of
https://sourceware.org/git/binutils-gdb.git
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a2c5833233
The result of running etc/update-copyright.py --this-year, fixing all the files whose mode is changed by the script, plus a build with --enable-maintainer-mode --enable-cgen-maint=yes, then checking out */po/*.pot which we don't update frequently. The copy of cgen was with commit d1dd5fcc38ead reverted as that commit breaks building of bfp opcodes files.
279 lines
7.2 KiB
Perl
Executable File
279 lines
7.2 KiB
Perl
Executable File
#!/usr/bin/perl
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# -*- perl -*-
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#
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# Toshiba MeP Media Engine Relocation Generator
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# Copyright (C) 2001-2022 Free Software Foundation, Inc.
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# This file is part of BFD.
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# Originally written by DJ Delorie <dj@redhat.com>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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# MA 02110-1301, USA.
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# Usage: Run this anywhere inside your source tree. It will read
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# include/elf/mep.h and scan the comments therein. It will renumber
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# the relocs to be sequential (this is needed so that bfd/elf32-mep.h
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# works) if needed. It will then update the reloc list in bfd/reloc.c
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# and the howto, mapping, and apply routines in bfd/elf32-mep.c. You
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# can then regenerate bfd-in2.h and check everything in.
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# FIXME: After the relocation list is finalized, change this to
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# *verify* the reloc list, rather than resequence it.
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while (! -f "include/elf/mep.h" && ! -f "bfd/reloc.c") {
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chdir "..";
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$pwd = `pwd`;
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if ($pwd !~ m@/.*/@) {
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print STDERR "Cannot find include/elf/mep.h or bfd/reloc.h\n";
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exit 1;
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}
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}
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$pwd = `pwd`;
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print "srctop is $pwd";
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printf "Reading include/elf/mep.h ...\n";
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open(MEPH, "include/elf/mep.h");
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open(MEPHO, "> include/elf/mep.h.new") || die("mep.h.new create: $!");
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$val = 0;
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while (<MEPH>) {
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if (($pre,$rel,$rest) = /(.*RELOC_NUMBER \()([^,]+), *\d+(.*)/) {
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$rest =~ s/[\r\n]+$//;
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print (MEPHO "$pre$rel, $val$rest\n") || die("mep.h.new write: $!");
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$val ++;
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$rel =~ s/R_MEP_//;
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push(@relocs, $rel);
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$rest =~ s@.*/\* @@;
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($pattern, $sign, $attrs) = $rest =~ m@(.*) ([US]) (.*)\*/@;
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$pattern =~ s/ //g;
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push(@pattern, $pattern);
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push(@sign, $sign);
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push(@attrs, $attrs);
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printf "%4d $rel p=`$pattern' s=`$sign' a=`$attrs'\n", $#pattern;
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} else {
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print(MEPHO) || die("mep.h.new write: $!");
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}
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}
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close(MEPH);
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close(MEPHO) || die("mep.h.new close: $!");
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&swapfile("include/elf/mep.h");
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redo_file ("bfd/reloc.c",
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"",
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"ENUMDOC\n Toshiba Media Processor Relocations.\n\nCOMMENT\n",
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"ENUM\n BFD_RELOC_MEP_%s\n",
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"");
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$autogen = " /* This section generated from bfd/mep-relocs.pl from include/elf/mep.h. */\n";
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redo_file ("bfd/elf32-mep.c",
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"MEPRELOC:HOWTO",
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$autogen,
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"MEPRELOC:END",
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"",
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"&emit_howto();",
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"MEPRELOC:MAP",
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$autogen,
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"MEPRELOC:END",
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"",
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" MAP(%s);\n",
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"MEPRELOC:APPLY",
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$autogen,
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"MEPRELOC:END",
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"",
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"&emit_apply();",
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);
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sub mask2shifts {
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my ($mask) = @_;
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my ($bits, $left, $right, $ci, $c, $cv);
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$bits = 0;
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$left = 0;
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$right = 32;
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for ($ci=0; $ci<length($mask); $ci++) {
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$c = substr($mask, $ci, 1);
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$left++;
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next if $c eq '-';
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$left = 0;
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$cv = ord($c) - ord('0');
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$cv -= ord('a') - ord('9') - 1 if $cv > 9;
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$right = $cv unless $right < $cv;
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$bits = $cv+1 unless $bits > $cv+1;
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}
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$mask =~ tr/-/1/c;
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$mask =~ tr/-/0/;
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($rmask = $mask) =~ tr/01/10/;
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$mask = unpack("H*", pack("B*", $mask));
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$rmask = unpack("H*", pack("B*", $rmask));
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return ($bits, $left, $right, $mask, $rmask);
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}
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sub emit_howto {
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for ($i=2; $i<=$#relocs; $i++) {
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$mask = $pattern[$i];
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if (length($mask) == 8) { $bytesize = 0; }
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elsif (length($mask) == 16) { $bytesize = 1; }
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elsif (length($mask) == 32) { $bytesize = 2; }
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($bits, $left, $right, $mask) = mask2shifts ($mask);
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$bits[$i] = $bits;
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$pcrel = 0;
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$pcrel = 1 if $attrs[$i] =~ /pc-rel/i;
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$overflow = $sign[$i];
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$overflow = 'N' if $attrs[$i] =~ /no-overflow/;
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$c = "$relocs[$i],";
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printf(NEW " MEPREL (R_MEP_%-10s%d,%3d,%2d,%2d,%2d,%2s, 0x%s),\n",
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$c, $bytesize, $bits, $left, $right, $pcrel, $overflow, $mask);
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}
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}
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sub emit_apply {
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for ($i=2; $i<=$#relocs; $i++) {
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$v = "u";
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$v = "s" if $sign[$i] =~ /S/;
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if (length($pattern[$i]) == 8) {
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$e = ''; # no endian swap for bytes
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} elsif ($pattern[$i] =~ /-/ || length($pattern[$i]) == 16) {
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$e = '^e2'; # endian swap - 2byte words only
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} else {
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$e = '^e4' # endian swap for data
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}
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print NEW " case R_MEP_$relocs[$i]: /* $pattern[$i] */\n";
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if ($relocs[$i] =~ /HI16S/) {
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print NEW " u += 0x8000;\n"
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}
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if ($attrs[$i] =~ /tp-rel/i) {
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print NEW " u -= mep_tpoff_base(rel->r_offset);\n";
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}
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if ($attrs[$i] =~ /gp-rel/i) {
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print NEW " u -= mep_sdaoff_base(rel->r_offset);\n";
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}
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if ($attrs[$i] !~ /no-overflow/ && $bits[$i] < 32) {
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if ($v eq "u") {
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$max = (1 << $bits[$i]) - 1;
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print NEW " if (u > $max) r = bfd_reloc_overflow;\n";
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} else {
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$min = (1 << ($bits[$i]-1));
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$max = (1 << ($bits[$i])) - 1;
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print NEW " if (u + $min > $max) r = bfd_reloc_overflow;\n";
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}
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}
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for ($b=0; $b<length($pattern[$i]); $b += 8) {
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$mask = substr($pattern[$i], $b, 8);
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($bits, $left, $right, $mask, $rmask) = mask2shifts ($mask);
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if ($left > $right) { $left -= $right; $right = 0; }
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else { $right -= $left; $left = 0; }
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if ($mask ne "00") {
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$bb = $b / 8;
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print NEW " byte[$bb$e] = ";
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print NEW "(byte[$bb$e] & 0x$rmask) | " if $rmask ne "00";
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if ($left) {
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print NEW "((u << $left) & 0x$mask)";
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} elsif ($right) {
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print NEW "((u >> $right) & 0x$mask)";
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} else {
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print NEW "(u & 0x$mask)";
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}
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print NEW ";\n";
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}
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}
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print NEW " break;\n";
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}
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}
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#-----------------------------------------------------------------------------
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sub redo_file {
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my ($file, @control) = @_;
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open(OLD, $file);
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open(NEW, "> $file.new") || die("$file.new create: $!");
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print "Scanning file $file ...\n";
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while (1) {
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$start = shift @control;
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$prefix = shift @control;
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$end = shift @control;
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$suffix = shift @control;
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$pattern = shift @control;
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if (!$start) {
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print NEW while <OLD>;
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last;
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}
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print " looking for $start\n";
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while (<OLD>) {
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print NEW;
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last if /\Q$start\E/;
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}
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print "can't find $start\n" unless $_;
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last unless $_;
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print NEW $prefix;
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if ($pattern =~ /^\&/) {
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eval $pattern;
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die("$pattern: $@") if $@;
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} else {
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for $i (2..$#relocs) {
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printf (NEW "$pattern", $relocs[$i]) || die("$file.new write: $!");
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$pattern =~ s/^ENUM\n/ENUMX\n/;
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}
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}
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print NEW $suffix;
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while (<OLD>) {
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last if /\Q$end\E/;
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}
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print NEW;
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}
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close(OLD);
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close(NEW) || die("$file.new close: $!");
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&swapfile($file);
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}
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#-----------------------------------------------------------------------------
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sub swapfile {
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my ($f) = @_;
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if ( ! -f "$f.save") {
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system "cp $f $f.save";
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}
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open(ORIG, $f);
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open(NEW, "$f.new");
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while (<ORIG>) {
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$n = <NEW>;
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if ($n ne $_) {
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close(ORIG);
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close(NEW);
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print " Updating $f\n";
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rename "$f", "$f.old";
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rename "$f.new", "$f";
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return;
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}
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}
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close(ORIG);
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close(NEW);
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print " No change to $f\n";
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unlink "$f.new";
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}
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