306 lines
7.2 KiB
Perl
306 lines
7.2 KiB
Perl
#!/usr/bin/perl -w
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# Copyright 2000, 2001, 2003, 2004, 2005 Free Software Foundation, Inc.
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#
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# This file is part of the GNU MP Library.
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#
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# The GNU MP Library is free software; you can redistribute it and/or modify
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# it under the terms of the GNU Lesser General Public License as published
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# by the Free Software Foundation; either version 2.1 of the License, or (at
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# your option) any later version.
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#
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# The GNU MP Library is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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# or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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# License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public License
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# along with the GNU MP Library; see the file COPYING.LIB. If not, write to
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# the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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# MA 02110-1301, USA.
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# Usage: slot.pl [filename.o]...
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#
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# Run "objdump" to produce a disassembly of the given object file(s) and
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# annotate the output with "U" or "L" slotting which Alpha EV6 will use.
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#
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# When an instruction is E (ie. either U or L), an "eU" or "eL" is shown, as
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# a reminder that it wasn't a fixed requirement that gave the U or L, but
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# the octaword slotting rules.
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#
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# If an instruction is not recognised, that octaword does not get any U/L
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# shown, only lower-case "u", "l" or "e" for the instructions which are
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# known. Add any unknown instructions to %optable below.
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use strict;
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# The U or L which various instructions demand, or E if either.
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#
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my %optable =
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(
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'addq' => 'E',
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'and' => 'E',
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'beq' => 'U',
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'bge' => 'U',
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'bgt' => 'U',
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'blt' => 'U',
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'bne' => 'U',
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'br' => 'L',
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'clr' => 'E',
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'cmpule' => 'E',
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'cmpult' => 'E',
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'cmpeq' => 'E',
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'cmoveq' => 'E',
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'cmovne' => 'E',
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'ctpop' => 'U',
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'ctlz' => 'U',
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'cttz' => 'U',
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'extbl' => 'U',
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'extlh' => 'U',
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'extll' => 'U',
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'extqh' => 'U',
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'extql' => 'U',
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'extwh' => 'U',
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'extwl' => 'U',
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'jsr' => 'L',
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'lda' => 'E',
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'ldah' => 'E',
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'ldbu' => 'L',
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'ldl' => 'L',
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'ldq' => 'L',
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'ldt' => 'L',
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'ret' => 'L',
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'mov' => 'E',
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'mulq' => 'U',
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'negq' => 'E',
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'nop' => 'E',
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'not' => 'E',
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's8addq' => 'E',
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's8subq' => 'E',
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# 'sextb' => ?
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# 'sextl' => ?
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'sll' => 'U',
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'srl' => 'U',
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'stq' => 'L',
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'subq' => 'E',
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'umulh' => 'U',
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'unop' => 'E',
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'xor' => 'E',
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);
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# Slottings used for a given pattern of U/L/E in an octaword. This is as
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# per the "Ebox Slotting" section of the EV6 hardware reference manual.
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#
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my %slottable =
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(
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'EEEE' => 'ULUL',
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'EEEL' => 'ULUL',
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'EEEU' => 'ULLU',
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'EELE' => 'ULLU',
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'EELL' => 'UULL',
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'EELU' => 'ULLU',
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'EEUE' => 'ULUL',
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'EEUL' => 'ULUL',
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'EEUU' => 'LLUU',
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'ELEE' => 'ULUL',
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'ELEL' => 'ULUL',
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'ELEU' => 'ULLU',
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'ELLE' => 'ULLU',
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'ELLL' => 'ULLL',
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'ELLU' => 'ULLU',
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'ELUE' => 'ULUL',
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'ELUL' => 'ULUL',
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'LLLL' => 'LLLL',
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'LLLU' => 'LLLU',
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'LLUE' => 'LLUU',
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'LLUL' => 'LLUL',
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'LLUU' => 'LLUU',
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'LUEE' => 'LULU',
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'LUEL' => 'LUUL',
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'LUEU' => 'LULU',
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'LULE' => 'LULU',
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'LULL' => 'LULL',
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'LULU' => 'LULU',
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'LUUE' => 'LUUL',
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'LUUL' => 'LUUL',
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'LUUU' => 'LUUU',
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'UEEE' => 'ULUL',
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'UEEL' => 'ULUL',
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'UEEU' => 'ULLU',
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'ELUU' => 'LLUU',
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'EUEE' => 'LULU',
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'EUEL' => 'LUUL',
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'EUEU' => 'LULU',
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'EULE' => 'LULU',
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'EULL' => 'UULL',
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'EULU' => 'LULU',
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'EUUE' => 'LUUL',
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'EUUL' => 'LUUL',
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'EUUU' => 'LUUU',
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'LEEE' => 'LULU',
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'LEEL' => 'LUUL',
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'LEEU' => 'LULU',
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'LELE' => 'LULU',
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'LELL' => 'LULL',
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'LELU' => 'LULU',
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'LEUE' => 'LUUL',
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'LEUL' => 'LUUL',
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'LEUU' => 'LLUU',
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'LLEE' => 'LLUU',
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'LLEL' => 'LLUL',
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'LLEU' => 'LLUU',
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'LLLE' => 'LLLU',
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'UELE' => 'ULLU',
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'UELL' => 'UULL',
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'UELU' => 'ULLU',
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'UEUE' => 'ULUL',
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'UEUL' => 'ULUL',
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'UEUU' => 'ULUU',
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'ULEE' => 'ULUL',
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'ULEL' => 'ULUL',
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'ULEU' => 'ULLU',
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'ULLE' => 'ULLU',
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'ULLL' => 'ULLL',
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'ULLU' => 'ULLU',
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'ULUE' => 'ULUL',
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'ULUL' => 'ULUL',
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'ULUU' => 'ULUU',
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'UUEE' => 'UULL',
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'UUEL' => 'UULL',
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'UUEU' => 'UULU',
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'UULE' => 'UULL',
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'UULL' => 'UULL',
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'UULU' => 'UULU',
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'UUUE' => 'UUUL',
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'UUUL' => 'UUUL',
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'UUUU' => 'UUUU',
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);
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# Check all combinations of U/L/E are present in %slottable.
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sub coverage {
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foreach my $a ('U', 'L', 'E') {
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foreach my $b ('U', 'L', 'E') {
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foreach my $c ('U', 'L', 'E') {
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foreach my $d ('U', 'L', 'E') {
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my $x = $a . $b . $c . $d;
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if (! defined $slottable{$x}) {
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print "slottable missing: $x\n"
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}
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}
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}
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}
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}
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}
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# Certain consistency checks for %slottable.
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sub check {
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foreach my $x (keys %slottable) {
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my $a = substr($x,0,1);
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my $b = substr($x,1,1);
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my $c = substr($x,2,1);
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my $d = substr($x,3,1);
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my $es = ($a eq 'E') + ($b eq 'E') + ($c eq 'E') + ($d eq 'E');
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my $ls = ($a eq 'L') + ($b eq 'L') + ($c eq 'L') + ($d eq 'L');
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my $us = ($a eq 'U') + ($b eq 'U') + ($c eq 'U') + ($d eq 'U');
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my $got = $slottable{$x};
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my $want = $x;
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if ($es == 0) {
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} elsif ($es == 1) {
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# when only one E, it's mapped to whichever of U or L is otherwise
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# used the least
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if ($ls > $us) {
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$want =~ s/E/U/;
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} else {
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$want =~ s/E/L/;
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}
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} elsif ($es == 2) {
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# when two E's and two U, then the E's map to L; vice versa for two E
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# and two L
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if ($ls == 2) {
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$want =~ s/E/U/g;
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} elsif ($us == 2) {
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$want =~ s/E/L/g;
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} else {
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next;
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}
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} elsif ($es == 3) {
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next;
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} else { # $es == 4
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next;
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}
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if ($want ne $got) {
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print "slottable $x want $want got $got\n";
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}
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}
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}
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sub disassemble {
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my ($file) = @_;
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open (IN, "objdump -Srfh $file |") || die "Cannot open pipe from objdump\n";
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my (%pre, %post, %type);
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while (<IN>) {
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my $line = $_ . "";
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if ($line =~ /(^[ \t]*[0-9a-f]*([0-9a-f]):[ \t]*[0-9a-f][0-9a-f] [0-9a-f][0-9a-f] [0-9a-f][0-9a-f] [0-9a-f][0-9a-f] )\t(([a-z0-9]+).*)/) {
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my ($this_pre, $addr, $this_post, $opcode) = ($1, $2, $3, $4);
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my $this_type = $optable{$opcode};
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if (! defined ($this_type)) { $this_type = ' '; }
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$pre{$addr} = $this_pre;
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$post{$addr} = $this_post;
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$type{$addr} = $this_type;
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if ($addr eq 'c') {
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my %slot = ('0'=>' ', '4'=>' ', '8'=>' ', 'c'=>' ');
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my $str = $type{'c'} . $type{'8'} . $type{'4'} . $type{'0'};
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$str = $slottable{$str};
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if (defined $str) {
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$slot{'c'} = substr($str,0,1);
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$slot{'8'} = substr($str,1,1);
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$slot{'4'} = substr($str,2,1);
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$slot{'0'} = substr($str,3,1);
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}
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foreach my $i ('0', '4', '8', 'c') {
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if ($slot{$i} eq $type{$i}) { $type{$i} = ' '; }
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print $pre{$i}, ' ', lc($type{$i}),$slot{$i}, ' ', $post{$i}, "\n";
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}
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%pre = ();
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%type = ();
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%post = ();
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}
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}
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}
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close IN || die "Error from objdump (or objdump not available)\n";
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}
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coverage();
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check();
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my @files;
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if ($#ARGV >= 0) {
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@files = @ARGV;
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} else {
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die
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}
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foreach (@files) {
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disassemble($_);
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}
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