4 # Copyright (C) 1995-2008 University of Karlsruhe. All right reserved.
6 # This file is part of libFirm.
8 # This file may be distributed and/or modified under the terms of the
9 # GNU General Public License version 2 as published by the Free Software
10 # Foundation and appearing in the file LICENSE.GPL included in the
11 # packaging of this file.
13 # Licensees holding valid libFirm Professional Edition licenses may use
14 # this file in accordance with the libFirm Commercial License.
15 # Agreement provided with the Software.
17 # This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
18 # WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 # This script generates the C code which creates the irop's and
23 # their coresponding node constructors for all operations in a given spec
24 # so they can be used as normal firm nodes.
25 # Creation: 2005/10/19
31 my $specfile = $ARGV[0];
32 my $target_dir = $ARGV[1];
38 our $additional_opcodes;
42 our $default_op_attr_type;
43 our $default_attr_type;
44 our $default_cmp_attr;
45 our $default_copy_attr;
47 our $custom_init_attr_func;
57 unless ($return = do $specfile) {
58 die "Fatal error: couldn't parse $specfile: $@" if $@;
59 die "Fatal error: couldn't do $specfile: $!" unless defined $return;
60 die "Fatal error: couldn't run $specfile" unless $return;
64 my $target_c = $target_dir."/gen_".$arch."_new_nodes.c.inl";
65 my $target_h = $target_dir."/gen_".$arch."_new_nodes.h";
67 if(!defined($default_attr_type)) {
68 $default_attr_type = "${arch}_attr_t";
70 if(!defined(%init_attr)) {
72 "$default_attr_type" => "\tinit_${arch}_attributes(res, flags, in_reqs, exec_units, n_res);",
75 if(!defined($default_cmp_attr)) {
76 $default_cmp_attr = "${arch}_compare_attr";
78 if(!defined(%compare_attr)) {
80 "${default_attr_type}" => "${default_cmp_attr}",
84 # Operands are really just nodes with some special constraints, we check
85 # these and create new entries in the nodes hashmap
86 foreach my $op (keys(%operands)) {
87 my %operand = %{ $operands{"$op"} };
91 if(defined($operand{op_flags})) { die "Fatal error: operands can't have op_flags ($op)"; }
92 if(defined($operand{cmp_attr})) { die "Fatal error: cmp_attr not allowed for operands ($op)"; }
93 if(defined($operand{mode})) { die "Operand must not have a mode defined ($op)"; }
94 if(defined($operand{out_arity})) { die "operand must not have out_arity defined ($op)"; }
95 if(defined($nodes{$op})) { die "$op defined as operand and as node"; };
98 foreach my $flag (keys(%operand)) {
99 $op_node{$flag} = $operand{$flag};
101 $op_node{op_flags} = "O";
102 $op_node{cmp_attr} = 'return 1;';
103 $op_node{mode} = 'mode_ANY';
105 $nodes{$op} = \%op_node;
108 #print Dumper(%nodes);
109 #print Dumper(%operands);
111 # create c code file from specs
115 my @obst_opvar; # stack for the "ir_op *op_<arch>_<op-name> = NULL;" statements
116 my @obst_get_opvar; # stack for the get_op_<arch>_<op-name>() functions
117 my @obst_constructor; # stack for node constructor functions
118 my @obst_new_irop; # stack for the new_ir_op calls
119 my @obst_enum_op; # stack for creating the <arch>_opcode enum
120 my @obst_header; # stack for function prototypes
121 my @obst_is_archirn; # stack for the is_$arch_irn() function
122 my @obst_cmp_attr; # stack for the compare attribute functions
123 my @obst_proj; # stack for the pn_ numbers
128 my $n_opcodes = 0; # number of opcodes
129 my $ARITY_VARIABLE = -1;
130 my $ARITY_DYNAMIC = -2;
131 my %requirements = ();
132 my %limit_bitsets = ();
134 my %regclass2len = ();
136 # build register->class hashes
137 foreach my $class_name (keys(%reg_classes)) {
138 my @class = @{ $reg_classes{"$class_name"} };
139 my $old_classname = $class_name;
143 $class_name = $arch."_".$class_name;
147 $reg2class{$_->{name}} = {
148 "class" => $old_classname,
154 $regclass2len{$old_classname} = $idx;
158 # for registering additional opcodes
159 $n_opcodes += $additional_opcodes if (defined($additional_opcodes));
161 push(@obst_header, "void ".$arch."_create_opcodes(const arch_irn_ops_t *be_ops);\n");
163 push(@obst_enum_op, "typedef enum _$arch\_opcodes {\n");
164 foreach my $op (keys(%nodes)) {
165 my %n = %{ $nodes{"$op"} };
173 if(exists($n{"arity"})) {
174 $arity = $n{"arity"};
175 } elsif (exists($n{"reg_req"}) && exists($n{"reg_req"}{"in"})) {
176 $arity = scalar(@{ $n{"reg_req"}{"in"} });
177 } elsif (exists($n{"ins"})) {
178 $arity = scalar(@{ $n{"ins"} });
180 if($arity eq "variable") {
181 $arity = $ARITY_VARIABLE;
182 } elsif($arity eq "dynamic") {
183 $arity = $ARITY_DYNAMIC;
186 # determine out arity
188 if(exists($n{"out_arity"})) {
189 $out_arity = $n{"out_arity"};
190 } elsif (exists($n{"reg_req"}) && exists($n{"reg_req"}{"out"})) {
191 $out_arity = scalar(@{ $n{"reg_req"}{"out"} });
192 } elsif (exists($n{"outs"})) {
193 $out_arity = scalar(@{ $n{"outs"} });
195 if($out_arity eq "variable") {
196 $out_arity = $ARITY_VARIABLE;
197 } elsif($out_arity eq "dynamic") {
198 $out_arity = $ARITY_DYNAMIC;
205 # define proj numbers and in numbers
206 if (exists($n{"outs"})) {
209 @outs = @{ $n{"outs"} };
210 if($out_arity >= 0 && scalar(@outs) != $out_arity) {
211 die "Fatal error: Op ${op} has different number of outs and out_arity\n";
214 $num_outs = $#outs + 1;
216 push(@obst_proj, "\nenum pn_$op {\n");
218 for (my $idx = 0; $idx <= $#outs; $idx++) {
219 # check, if we have additional flags annotated to out
220 if ($outs[$idx] =~ /:((S|I)(\|(S|I))*)/) {
221 push(@out_flags, $1);
222 $outs[$idx] =~ s/:((S|I)(\|(S|I))*)//;
224 push(@obst_proj, "\tpn_$op\_".$outs[$idx]." = $idx,\n");
227 push(@obst_proj, "};\n");
228 # outs have names, it must be a mode_T node
229 $known_mode = "mode_T";
231 if (exists($n{"ins"})) {
234 @ins = @{ $n{"ins"} };
235 if($arity >= 0 && scalar(@ins) != $arity) {
236 die "Fatal error: Op ${op} has different number of ins and arity\n";
239 push(@obst_proj, "\nenum n_$op {\n");
241 for (my $idx = 0; $idx <= $#ins; $idx++) {
242 push(@obst_proj, "\tn_${op}_".$ins[$idx]." = $idx,\n");
245 push(@obst_proj, "};\n");
249 if (exists($n{"mode"})) {
250 $known_mode = $n{"mode"};
253 push(@obst_opvar, "ir_op *op_$op = NULL;\n");
254 push(@obst_get_opvar, "ir_op *get_op_$op(void) { return op_$op; }\n");
255 push(@obst_get_opvar, "int is_$op(const ir_node *n) { return get_$arch\_irn_opcode(n) == iro_$op; }\n\n");
257 push(@obst_is_archirn, "is_$op(node)");
259 push(@obst_header, "extern ir_op *op_$op;\n");
260 push(@obst_header, "ir_op *get_op_$op(void);\n");
261 push(@obst_header, "int is_$op(const ir_node *n);\n");
263 my $attr_type= $n{"attr_type"};
264 if(!defined($attr_type)) {
265 $attr_type = $default_attr_type;
268 # determine hash function
270 if (exists($n{"hash_func"})) {
271 $hash_func = $n{"hash_func"};
274 # determine compare function
276 if (exists($n{"cmp_attr"})) {
277 my $cmpcode = $n{"cmp_attr"};
279 push(@obst_cmp_attr, "static int cmp_attr_$op(ir_node *a, ir_node *b) {\n");
280 if($cmpcode =~ m/attr_a/) {
281 push(@obst_cmp_attr, "\t${attr_type} *attr_a = get_irn_generic_attr(a);\n");
283 push(@obst_cmp_attr, "\t(void) a;\n");
285 if($cmpcode =~ m/attr_b/) {
286 push(@obst_cmp_attr, "\t${attr_type} *attr_b = get_irn_generic_attr(b);\n");
288 push(@obst_cmp_attr, "\t(void) b;\n");
290 push(@obst_cmp_attr, "\t${cmpcode}\n");
291 push(@obst_cmp_attr, "}\n\n");
293 $cmp_attr_func = "cmp_attr_${op}";
295 if(defined($compare_attr{${attr_type}})) {
296 $cmp_attr_func = $compare_attr{${attr_type}};
298 die "Fatal error: No compare function defined for ${attr_type} attributes.";
302 if (exists($n{"rd_constructor"}) && $n{"rd_constructor"} =~ /^NONE$/i) {
303 # we explicitly skip the constructor if the specification entry says NONE
305 my $comment = $n{"comment"};
306 if(!exists($n{"comment"})) {
307 $comment = "construct ${orig_op} node";
314 push(@obst_constructor, $comment);
316 # create constructor head
317 my $complete_args = "";
320 $temp = "ir_node *new_bd_$op(dbg_info *db, ir_node *block";
321 if (!exists($n{"args"})) { # default args
322 if ($arity == $ARITY_VARIABLE) {
323 $complete_args = ", int arity, ir_node *in[]";
324 } elsif ($arity == $ARITY_DYNAMIC) {
327 for (my $i = 0; $i < $arity; $i++) {
328 my $opname = "op${i}";
329 if (exists($n{"ins"})) {
330 my @ins = @{ $n{"ins"} };
334 $complete_args .= ", ir_node *${opname}";
337 if ($out_arity == $ARITY_VARIABLE) {
338 $complete_args .= ", int n_res";
341 if (!defined($known_mode)) {
342 $complete_args .= ", ir_mode *mode";
344 } else { # user defined args
345 for my $href (@{ $n{"args"} }) {
346 $href->{"type"} .= " " if ($href->{"type"} !~ / [*]?$/); # put a space between name and type if there is none at the end
347 $complete_args .= ", ".$href->{"type"}.$href->{"name"};
351 # we have additional attribute arguements
352 if (exists($n{"attr"})) {
353 $complete_args .= ", ".$n{"attr"};
356 $temp .= "$complete_args)";
357 push(@obst_constructor, $temp."\n{\n");
358 push(@obst_header, $comment);
359 push(@obst_header, $temp.";\n");
361 # emit constructor code
362 if (!exists($n{"rd_constructor"})) { # default constructor
365 ir_op *op = op_${op};
367 backend_info_t *info;
370 if($arity == $ARITY_DYNAMIC) {
375 } elsif($arity == $ARITY_VARIABLE) {
390 if($out_arity == $ARITY_DYNAMIC) {
394 } elsif($out_arity == $ARITY_VARIABLE) {
397 int n_res = ${out_arity};
401 if (defined($known_mode)) {
403 ir_mode *mode = ${known_mode};
407 # set up static variables for cpu execution unit assigments
408 if (exists($n{"units"})) {
409 $temp .= gen_execunit_list_initializer($n{"units"});
412 static const be_execution_unit_t ***exec_units = NULL;
416 undef my $in_req_var;
417 undef my $out_req_var;
419 my $set_out_reqs = "";
421 # set up static variables for requirements and registers
422 if (exists($n{"reg_req"})) {
423 my %req = %{ $n{"reg_req"} };
427 @in = @{ $req{"in"} } if (exists($req{"in"}));
429 @out = @{ $req{"out"} } if exists(($req{"out"}));
431 for(my $idx = 0; $idx < $#in; $idx++) {
433 generate_requirements($req, \%n, $op, $idx, 1);
435 for(my $idx = 0; $idx < $#out; $idx++) {
436 my $req = $out[$idx];
437 generate_requirements($req, \%n, $op, $idx, 0);
441 if($arity >= 0 && scalar(@in) != $arity) {
442 die "Fatal error: Arity and number of in requirements don't match for ${op}\n";
445 $temp .= "\tstatic const arch_register_req_t *in_reqs[] =\n";
447 for ($idx = 0; $idx <= $#in; $idx++) {
449 my $reqstruct = generate_requirements($req, \%n, $op, $idx, 1);
450 $temp .= "\t\t& ${reqstruct},\n";
455 die "Fatal error: need in requirements for ${op}\n";
457 $temp .= "\tstatic const arch_register_req_t **in_reqs = NULL;\n";
461 if($out_arity >= 0 && scalar(@out) != $out_arity) {
462 die "Fatal error: Out-Arity and number of out requirements don't match for ${op}\n";
465 for ($idx = 0; $idx <= $#out; $idx++) {
466 my $req = $out[$idx];
467 my $reqstruct = generate_requirements($req, \%n, $op, $idx, 0);
468 $set_out_reqs .= <<EOF;
469 info->out_infos[${idx}].req = &${reqstruct};
474 die "Fatal error: need out requirements for ${op}\n";
478 $temp .= "\tstatic const arch_register_req_t **in_reqs = NULL;\n";
480 if(exists($n{"init_attr"})) {
481 $temp .= "\t${attr_type} *attr;\n";
487 $temp .= "\t/* construct in array */\n";
488 for (my $i = 0; $i < $arity; $i++) {
489 my $opname = "op${i}";
490 if (exists($n{"ins"})) {
491 my @ins = @{ $n{"ins"} };
495 $temp .= "\tin[${i}] = ${opname};\n";
501 if (exists($n{"irn_flags"})) {
502 $temp .= "\t/* flags */\n";
503 foreach my $flag (split(/\|/, $n{"irn_flags"})) {
505 $temp .= "\tflags |= arch_irn_flags_rematerializable;\n";
506 } elsif ($flag eq "N") {
507 $temp .= "\tflags |= arch_irn_flags_dont_spill;\n";
508 } elsif ($flag eq "J") {
509 $temp .= "\t flags |= arch_irn_flags_simple_jump;\n";
511 die "Fatal error: unknown flag $flag for ${op}\n";
517 # lookup init function
518 my $attr_init_code = $init_attr{$attr_type};
519 if(!defined($attr_init_code)) {
520 die "Fatal error: Couldn't find attribute initialisation code for type '${attr_type}'";
523 if(defined($custom_init_attr_func)) {
524 $custominit .= &$custom_init_attr_func(\%n, $op);
530 res = new_ir_node(db, current_ir_graph, block, op, mode, arity, in);
532 /* init node attributes */
535 info = be_get_info(res);
540 if (exists($n{"init_attr"})) {
541 $temp .= "\tattr = get_irn_generic_attr(res);\n";
542 $temp .= "\t".$n{"init_attr"}."\n";
547 res = optimize_node(res);
548 irn_vrfy_irg(res, current_ir_graph);
553 push(@obst_constructor, $temp);
555 else { # user defined constructor
556 push(@obst_constructor, $n{"rd_constructor"});
559 # close constructor function
560 push(@obst_constructor, "}\n\n");
561 } # constructor creation
563 # set default values for state and flags if not given
564 $n{"state"} = "floats" if (! exists($n{"state"}));
565 $n{"op_flags"} = "N" if (! exists($n{"op_flags"}));
568 push(@obst_new_irop, "\n\tmemset(&ops, 0, sizeof(ops));\n");
569 push(@obst_new_irop, "\tops.be_ops = be_ops;\n");
570 push(@obst_new_irop, "\tops.dump_node = $arch\_dump_node;\n");
572 if (defined($cmp_attr_func)) {
573 push(@obst_new_irop, "\tops.node_cmp_attr = ${cmp_attr_func};\n");
575 my $copy_attr_func = $copy_attr{$attr_type};
576 if (!defined($copy_attr_func)) {
577 $copy_attr_func = $default_copy_attr;
579 if (defined($copy_attr_func)) {
580 push(@obst_new_irop, "\tops.copy_attr = ${copy_attr_func};\n");
582 if (defined($hash_func)) {
583 push(@obst_new_irop, "\tops.hash = ${hash_func};\n");
587 my $n_res = $out_arity;
589 $n_res = "20"; # hacky....
591 $temp = "\top_$op = new_ir_op(cur_opcode + iro_$op, \"$op\", op_pin_state_".$n{"state"}.", ".$n{"op_flags"};
592 $temp .= "|M, ".translate_arity($arity).", 0, sizeof(${attr_type}), &ops);\n";
593 push(@obst_new_irop, $temp);
594 push(@obst_new_irop, "\tset_op_tag(op_$op, $arch\_op_tag);\n");
595 if(defined($default_op_attr_type)) {
596 push(@obst_new_irop, "\tattr = &attrs[iro_$op];\n");
597 if(defined($n{op_attr_init})) {
598 push(@obst_new_irop, "\t".$n{op_attr_init}."\n");
600 push(@obst_new_irop, "\tset_op_attr(op_$op, attr);\n");
603 push(@obst_enum_op, "\tiro_$op,\n");
605 push(@obst_header, "\n");
607 push(@obst_enum_op, "\tiro_$arch\_last_generated,\n");
608 push(@obst_enum_op, "\tiro_$arch\_last = iro_$arch\_last_generated");
609 push(@obst_enum_op, " + $additional_opcodes") if (defined($additional_opcodes));
610 push(@obst_enum_op, "\n} $arch\_opcodes;\n\n");
614 open(OUT, ">$target_c") || die("Fatal error: Could not open $target_c, reason: $!\n");
616 print OUT "#include \"gen_$arch\_regalloc_if.h\"\n\n";
617 print OUT @obst_cmp_attr;
619 print OUT @obst_opvar;
621 print OUT @obst_get_opvar;
626 static int $arch\_opcode_start = -1;
627 static int $arch\_opcode_end = -1;
631 # build the FOURCC arguments from $arch
633 my ($a, $b, $c, $d) = ('\0', '\0', '\0', '\0');
635 if (length($arch) >= 1) {
636 $a = uc(substr($arch, 0, 1));
639 if (length($arch) >= 2) {
640 $b = uc(substr($arch, 1, 1));
643 if (length($arch) >= 3) {
644 $c = uc(substr($arch, 2, 1));
647 if (length($arch) >= 4) {
648 $d = uc(substr($arch, 3, 1));
651 print OUT<<ENDOFISIRN;
653 /** A tag for the $arch opcodes. Note that the address is used as a tag value, NOT the FOURCC code. */
654 #define $arch\_op_tag FOURCC('$a', '$b', '$c', '$d')
656 /** Return the opcode number of the first $arch opcode. */
657 int get_$arch\_opcode_first(void) {
658 return $arch\_opcode_start;
661 /** Return the opcode number of the last $arch opcode + 1. */
662 int get_$arch\_opcode_last(void) {
663 return $arch\_opcode_end;
666 /** Return 1 if the given opcode is a $arch machine op, 0 otherwise */
667 int is_$arch\_op(const ir_op *op) {
668 return get_op_tag(op) == $arch\_op_tag;
671 /** Return 1 if the given node is a $arch machine node, 0 otherwise */
672 int is_$arch\_irn(const ir_node *node) {
673 return is_$arch\_op(get_irn_op(node));
676 int get_$arch\_irn_opcode(const ir_node *node) {
677 if (is_$arch\_irn(node))
678 return get_irn_opcode(node) - $arch\_opcode_start;
688 #define BIT(x) (1 << (x % 32))
692 print OUT @obst_limit_func;
695 print OUT @obst_reg_reqs;
698 print OUT @obst_constructor;
700 print OUT<<ENDOFMAIN;
702 * Creates the $arch specific Firm machine operations
703 * needed for the assembler irgs.
705 void $arch\_create_opcodes(const arch_irn_ops_t *be_ops) {
706 #define N irop_flag_none
707 #define L irop_flag_labeled
708 #define C irop_flag_commutative
709 #define X irop_flag_cfopcode
710 #define I irop_flag_ip_cfopcode
711 #define F irop_flag_fragile
712 #define Y irop_flag_forking
713 #define H irop_flag_highlevel
714 #define c irop_flag_constlike
715 #define K irop_flag_keep
716 #define M irop_flag_machine
717 #define O irop_flag_machine_op
718 #define NB irop_flag_dump_noblock
719 #define NI irop_flag_dump_noinput
720 #define R (irop_flag_user << 0)
724 static int run_once = 0;
727 if (defined($default_op_attr_type)) {
728 print OUT "\t$default_op_attr_type *attr, *attrs;\n";
731 print OUT<<ENDOFMAIN;
737 cur_opcode = get_next_ir_opcodes(iro_$arch\_last);
739 $arch\_opcode_start = cur_opcode;
742 if (defined($default_op_attr_type)) {
743 print OUT "\tattrs = xmalloc(sizeof(attr[0]) * iro_$arch\_last);\n";
744 print OUT "\tmemset(attrs, 0, sizeof(attr[0]) * iro_$arch\_last);\n";
747 print OUT @obst_new_irop;
749 print OUT "\t$arch\_register_additional_opcodes(cur_opcode);\n" if (defined($additional_opcodes));
750 print OUT "\t$arch\_opcode_end = cur_opcode + iro_$arch\_last";
751 print OUT " + $additional_opcodes" if (defined($additional_opcodes));
757 open(OUT, ">$target_h") || die("Fatal error: Could not open $target_h, reason: $!\n");
759 my $creation_time = localtime(time());
765 * \@brief Function prototypes for the new opcode functions.
766 * \@note DO NOT EDIT THIS FILE, your changes will be lost.
767 * Edit $specfile instead.
768 * created by: $0 $specfile $target_dir
769 * \@date $creation_time
771 #ifndef FIRM_BE_${tmp}_GEN_${tmp}_NEW_NODES_H
772 #define FIRM_BE_${tmp}_GEN_${tmp}_NEW_NODES_H
776 print OUT @obst_enum_op;
777 print OUT "int is_$arch\_irn(const ir_node *node);\n\n";
778 print OUT "int get_$arch\_opcode_first(void);\n";
779 print OUT "int get_$arch\_opcode_last(void);\n";
780 print OUT "int get_$arch\_irn_opcode(const ir_node *node);\n";
781 print OUT @obst_header;
782 print OUT @obst_proj;
791 # Translates numeric arity into string constant.
793 sub translate_arity {
796 if ($arity =~ /^\d+$/) {
798 return "oparity_zero";
800 elsif ($arity == 1) {
801 return "oparity_unary";
803 elsif ($arity == 2) {
804 return "oparity_binary";
806 elsif ($arity == 3) {
807 return "oparity_trinary";
810 return "oparity_any";
812 } elsif ($arity == $ARITY_VARIABLE) {
813 return "oparity_variable";
814 } elsif ($arity == $ARITY_DYNAMIC) {
815 return "oparity_dynamic";
817 die "Fatal error: Unknown arity $arity";
822 # Return the list of pointers for the given execution units.
824 sub gen_execunit_list_initializer {
826 my $uc_arch = uc($arch);
831 foreach my $unit (@{ $units }) {
832 if ($unit eq "DUMMY") {
833 push(@{ $init{"DUMMY"} }, "\t\t&be_machine_execution_units_DUMMY[0]");
835 elsif (exists($cpu{"$unit"})) {
836 # operation can be executed on all units of this type
838 my $tp_name = "$arch\_execution_units_$unit";
840 foreach (@{ $cpu{"$unit"} }) {
841 next if ($idx++ == 0); # skip first element (it's not a unit)
842 my $unit_name = "$uc_arch\_EXECUNIT_TP_$unit\_$_";
843 push(@{ $init{"$unit"} }, "\t\t&".$tp_name."[".$unit_name."]");
847 # operation can be executed only a certain unit
848 # -> find corresponding unit type
850 TP_SEARCH: foreach my $cur_type (keys(%cpu)) {
851 foreach my $cur_unit (@{ $cpu{"$cur_type"} }) {
852 if ($unit eq $cur_unit) {
853 my $tp_name = "$arch\_execution_units_$cur_type";
854 my $unit_name = "$uc_arch\_EXECUNIT_TP_$cur_type\_$unit";
855 push(@{ $init{"$unit"} }, "\t\t&".$tp_name."[".$unit_name."]");
863 print STDERR "Invalid execution unit $unit specified!\n";
868 # prepare the 2-dim array init
869 foreach my $key (keys(%init)) {
870 $ret .= "\tstatic const be_execution_unit_t *allowed_units_".$key."[] =\n";
872 foreach (@{ $init{"$key"} }) {
875 $ret .= "\t\tNULL\n";
877 $ret2 .= "\t\tallowed_units_$key,\n";
879 $ret2 .= "\t\tNULL\n";
881 $ret .= "\tstatic const be_execution_unit_t **exec_units[] =\n";
889 sub mangle_requirements {
894 my @alternatives = split(/ /, $reqs);
895 for(my $idx = 0; $idx < scalar(@alternatives); $idx++) {
896 $alternatives[$idx] =~ s/!/not_/g;
899 @alternatives = sort @alternatives;
901 my $name = $class."_".join('_', @alternatives);
902 if (defined($flags)) {
911 # Determines whether $name is a specified register class or not.
912 # @return 1 if name is register class, 0 otherwise
916 return 1 if exists($reg_classes{"$name"});
921 # Returns the register class for a given register.
922 # @return class or undef
926 $reg = substr($reg, 1) if ($reg =~ /!.*/);
927 return $reg2class{"$reg"}{"class"} if (exists($reg2class{"$reg"}));
932 # Returns the index of a given register within it's register class.
933 # @return index or undef
937 return $reg2class{"$reg"}{"index"} if (exists($reg2class{"$reg"}));
942 # Remember the register class for each index in the given requirements.
943 # We need this information for requirements like "in_sX" or "out_dX"
944 # @return array of classes corresponding to the requirement for each index
946 sub build_inout_idx_class {
952 my $inout = ($is_in ? "in" : "out");
954 if (exists($n->{"reg_req"}{"$inout"})) {
955 my @reqs = @{ $n->{"reg_req"}{"$inout"} };
957 for (my $idx = 0; $idx <= $#reqs; $idx++) {
959 my ($req,) = split(/:/, $reqs[$idx]);
961 if ($req eq "none") {
963 } elsif (is_reg_class($req)) {
966 my @regs = split(/ /, $req);
967 GET_CLASS: foreach my $reg (@regs) {
968 if ($reg =~ /!?(in|out)\_r\d+/ || $reg =~ /!in/) {
969 $class = "UNKNOWN_CLASS";
971 $class = get_reg_class($reg);
972 if (!defined $class) {
973 die("Fatal error: Could not get ".uc($inout)." register class for '$op' pos $idx (reg $reg) ... exiting.\n");
981 push(@idx_class, $class);
989 # Generates the function for a given $op and a given IN-index
990 # which returns a subset of possible register from a register class
991 # @return classname from which the subset is derived or undef and
992 # pos which corresponds to in/out reference position or undef
994 sub build_subset_class_func {
1000 my $different_pos = 0;
1006 my $limit_reqs; #used for name mangling
1008 # build function header
1013 my @regs = split(/ /, shift);
1016 my @idx_class = build_inout_idx_class($node, $op, !$is_in);
1018 # set/unset registers
1019 CHECK_REQS: foreach (@regs) {
1020 if (!$is_in && /(!)?in_r(\d+)/) {
1021 my $bit_pos = 1 << ($2 - 1);
1022 if ($different_pos & $bit_pos) {
1024 print STDERR "duplicate !in constraint\n";
1026 print STDERR "conflicting !in and in constraints\n";
1028 return (undef, undef, undef, undef);
1031 if ($same_pos & $bit_pos) {
1033 print STDERR "conflicting !in and in constraints\n";
1035 print STDERR "duplicate in constraint\n";
1037 return (undef, undef, undef, undef);
1041 $different_pos |= $bit_pos;
1043 $same_pos |= $bit_pos;
1046 $class = $idx_class[$2 - 1];
1051 if (substr($_, 0, 1) eq "!") {
1052 if (defined($neg) && $neg == 0) {
1053 # we have seen a positiv constraint as first one but this one is negative
1054 # this doesn't make sense
1055 print STDERR "Mixed positive and negative constraints for the same slot are not allowed.\n";
1056 return (undef, undef, undef, undef);
1059 if (!defined($neg)) {
1063 $_ = substr($_, 1); # skip '!'
1066 if (defined($neg) && $neg == 1) {
1067 # we have seen a negative constraint as first one but this one is positive
1068 # this doesn't make sense
1069 print STDERR "Mixed positive and negative constraints for the same slot are not allowed.\n";
1070 return (undef, undef, undef, undef);
1077 # check if register belongs to one of the given classes
1078 $temp = get_reg_class($_);
1079 if (!defined($temp)) {
1080 print STDERR "Unknown register '$_'!\n";
1081 return (undef, undef, undef, undef);
1085 if (!defined($class)) {
1087 } elsif ($class ne $temp) {
1088 # all registers must belong to the same class
1089 print STDERR "Registerclass mismatch. '$_' is not member of class '$class'.\n";
1090 return (undef, undef, undef, undef);
1093 # calculate position inside the initializer bitfield (only 32 bits per
1095 my $regidx = get_reg_index($_);
1096 my $arrayp = $regidx / 32;
1097 push(@{$limit_array[$arrayp]}, $_);
1098 $limit_reqs .= "$_ ";
1101 # don't allow ignore regs in negative constraints
1103 my @cur_class = @{ $reg_classes{"$class"} };
1104 for (my $idx = 0; $idx <= $#cur_class; $idx++) {
1105 if (defined($cur_class[$idx]{"type"}) && ($cur_class[$idx]{"type"} & 4)) {
1106 my $reg = $cur_class[$idx]{"name"};
1107 my $regix = get_reg_index($reg);
1108 my $arrayp = $regix / 32;
1109 push(@{$limit_array[$arrayp]}, $reg);
1110 $limit_reqs .= "$reg ";
1115 if ($has_limit == 1) {
1116 $limit_name = "${arch}_limit_".mangle_requirements($limit_reqs, $class);
1118 if(defined($limit_bitsets{$limit_name})) {
1119 $limit_name = $limit_bitsets{$limit_name};
1120 return ($class, $limit_name, $same_pos, $different_pos);
1123 $limit_bitsets{$limit_name} = $limit_name;
1125 push(@obst_limit_func, "static const unsigned " . $limit_name . "[] = { ");
1127 my $limitbitsetlen = $regclass2len{$class};
1128 my $limitarraylen = ($limitbitsetlen+31) / 32;
1129 for(my $i = 0; $i < $limitarraylen; $i++) {
1131 my $limitarraypart = $limit_array[$i];
1135 push(@obst_limit_func, ", ");
1139 $temp = "0xFFFFFFFF";
1141 foreach my $reg (@{$limitarraypart}) {
1144 } elsif(defined($temp)) {
1147 $temp .= "BIT(REG_".uc(${reg}).")";
1149 if(defined($temp)) {
1150 push(@obst_limit_func, "${temp}");
1152 push(@obst_limit_func, "0");
1155 push(@obst_limit_func, " };\n");
1158 return ($class, $limit_name, $same_pos, $different_pos);
1162 # Generate register requirements structure
1164 sub generate_requirements {
1165 my ($reqs, $flags) = split(/:/, shift);
1174 if (defined($flags)) {
1175 foreach my $f (split(/|/, $flags)) {
1177 push(@req_type_mask, "arch_register_req_type_ignore");
1178 } elsif ($f eq "S") {
1179 push(@req_type_mask, "arch_register_req_type_produces_sp");
1184 if ($reqs eq "none") {
1188 arch_register_req_type_none,
1189 NULL, /* regclass */
1190 NULL, /* limit bitset */
1192 0 /* different pos */
1196 } elsif (is_reg_class($reqs)) {
1197 push(@req_type_mask, "arch_register_req_type_normal");
1198 my $reqtype = join(" | ", @req_type_mask);
1203 & ${arch}_reg_classes[CLASS_${arch}_${class}],
1204 NULL, /* limit bitset */
1206 0 /* different pos */
1212 my ($regclass, $limit_bitset, $same_pos, $different_pos)
1213 = build_subset_class_func($node, $op, $idx, $is_in, $reqs, $flags);
1215 if (!defined($regclass)) {
1216 die("Fatal error: Could not build subset for requirements '$reqs' of '$op' pos $idx ... exiting.\n");
1219 if (defined($limit_bitset) && $limit_bitset ne "NULL") {
1220 push(@req_type_mask, "arch_register_req_type_limited");
1222 if ($same_pos != 0) {
1223 push(@req_type_mask, "arch_register_req_type_should_be_same");
1225 if ($different_pos != 0) {
1226 push(@req_type_mask, "arch_register_req_type_must_be_different");
1228 my $reqtype = join(" | ", @req_type_mask);
1230 if(!defined($limit_bitset)) {
1231 $limit_bitset = "NULL";
1238 & ${arch}_reg_classes[CLASS_${arch}_${class}],
1240 ${same_pos}, /* same pos */
1241 ${different_pos} /* different pos */
1247 my $name = "${arch}_requirements_".mangle_requirements($reqs, $class, $flags);
1248 if(defined($requirements{$name})) {
1251 $requirements{$name} = $name;
1252 push(@obst_reg_reqs, <<EOF);
1253 static const arch_register_req_t ${name} = ${result}