4 # Copyright (C) 1995-2007 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 C code which creates ands sets up functions and
23 # data structures for the register allocator.
24 # Creation: 2005/11/14
31 my $specfile = $ARGV[0];
32 my $target_dir = $ARGV[1];
44 unless ($return = do $specfile) {
45 die "Fatal error: couldn't parse $specfile: $@" if $@;
46 die "Fatal error: couldn't do $specfile: $!" unless defined $return;
47 die "Fatal error: couldn't run $specfile" unless $return;
51 my $target_c = $target_dir."/gen_".$arch."_regalloc_if.c";
52 my $target_h = $target_dir."/gen_".$arch."_regalloc_if.h";
55 sub translate_reg_type {
59 return "arch_register_type_none";
65 push(@types, "arch_register_type_caller_save");
69 push(@types, "arch_register_type_callee_save");
73 push(@types, "arch_register_type_ignore");
77 push(@types, "arch_register_type_joker");
81 push(@types, "arch_register_type_virtual");
85 push(@types, "arch_register_type_state");
88 return join(" | ", @types);
93 my @obst_regtypes_def; # stack for the register type variables definitions
94 my @obst_regtypes_decl;# stack for the register type variables declarations
95 my @obst_regclasses; # stack for the register class variables
96 my @obst_classdef; # stack to define a name for a class index
97 my @obst_regdef; # stack to define a name for a register index
98 my @obst_reginit; # stack for the register type inits
99 my @obst_req; # stack for the register requirements
100 my @obst_limit_func; # stack for functions to return a subset of a register class
101 my @obst_header_all; # stack for some extern struct defs needed for bearch_$arch include
112 push(@obst_classdef, "enum reg_classes {\n");
116 # generate register type and class variable, init function and default requirements
117 foreach my $class_name (keys(%reg_classes)) {
118 my @class = @{ $reg_classes{"$class_name"} };
119 my $old_classname = $class_name;
121 $class_name = $arch."_".$class_name;
122 $numregs = "N_".$class_name."_REGS";
123 $class_ptr = "&".$arch."_reg_classes[CLASS_".$class_name."]";
124 $class_mode = pop(@class)->{"mode"};
126 push(@obst_regtypes_decl, "extern const arch_register_t ${class_name}_regs[$numregs];\n");
128 push(@obst_classdef, "\tCLASS_$class_name = $class_idx,\n");
129 push(@obst_regclasses, "{ \"$class_name\", $numregs, NULL, ".$class_name."_regs }");
132 push(@obst_reginit, "\t/* set largest possible mode for '$class_name' */\n");
133 push(@obst_reginit, "\t$arch\_reg_classes[CLASS_".$class_name."].mode = $class_mode;\n\n");
134 push(@obst_regtypes_def, "const arch_register_t ${class_name}_regs[$numregs] = {\n");
136 push(@obst_regdef, "enum reg_${class_name}_indices {\n");
138 my $ucname = uc($_->{"name"});
139 my $type = translate_reg_type($_->{"type"});
140 # realname is name if not set by user
141 $_->{"realname"} = $_->{"name"} if (! exists($_->{"realname"}));
142 my $realname = $_->{realname};
143 my $execunitvarname = get_execunit_variable_name($_->{"unit"});
146 $reg2class{$_->{"name"}} = { "class" => $old_classname, "index" => $idx }; # remember reg to class for later use
147 push(@obst_regdef, "\tREG_${ucname},\n");
149 push(@obst_regtypes_def, "\t{\n");
150 push(@obst_regtypes_def, "\t\t\"$realname\",\n");
151 push(@obst_regtypes_def, "\t\t$class_ptr,\n");
152 push(@obst_regtypes_def, "\t\tREG_${ucname},\n");
153 push(@obst_regtypes_def, "\t\t$type,\n");
154 push(@obst_regtypes_def, "\t\t$execunitvarname\n");
155 push(@obst_regtypes_def, "\t},\n");
159 push(@obst_regtypes_def, "};\n");
161 $regclass2len{$old_classname} = $idx;
162 push(@obst_regdef, "\t$numregs = $idx\n");
163 push(@obst_regdef, "};\n\n");
168 push(@obst_regdef, "enum flag_indices {\n");
169 foreach my $flag (keys(%flags)) {
170 my %f = %{ $flags{$flag} };
172 push(@obst_regdef, "\tFLAG_$flag,\n");
174 push(@obst_regdef, "\tFLAG_LAST\n");
175 push(@obst_regdef, "};\n");
176 push(@obst_regtypes_decl, "extern arch_flag_t ${arch}_flags[];\n");
178 push(@obst_classdef, "\tN_CLASSES = ".scalar(keys(%reg_classes))."\n");
179 push(@obst_classdef, "};\n\n");
183 # generate header (external usage) file
184 open(OUT, ">$target_h") || die("Fatal error: Could not open $target_h, reason: $!\n");
186 my $creation_time = localtime(time());
191 * \@brief Contains additional external requirements defs for external includes.
192 * \@note DO NOT EDIT THIS FILE, your changes will be lost.
193 * Edit $specfile instead.
194 * created by: $0 $specfile $target_dir
195 * \@date $creation_time
197 #ifndef FIRM_BE_${tmp}_GEN_${tmp}_REGALLOC_IF_H
198 #define FIRM_BE_${tmp}_GEN_${tmp}_REGALLOC_IF_H
200 #include "../bearch.h"
201 #include "${arch}_nodes_attr.h"
205 print OUT @obst_regdef, "\n";
207 print OUT @obst_classdef, "\n";
209 print OUT @obst_regtypes_decl, "\n";
211 print OUT "extern arch_register_class_t $arch\_reg_classes[N_CLASSES];\n\n";
213 print OUT "void ".$arch."_register_init(void);\n\n";
215 print OUT @obst_header_all, "\n";
217 print OUT "\n#endif\n";
224 open(OUT, ">$target_c") || die("Fatal error: Could not open $target_c, reason: $!\n");
226 $creation_time = localtime(time());
231 * \@brief The generated interface for the register allocator.
232 * Contains register classes and types and register constraints
233 * for all nodes where constraints were given in spec.
234 * \@note DO NOT EDIT THIS FILE, your changes will be lost.
235 * Edit $specfile instead.
236 * created by: $0 $specfile $target_dir
237 * \$date $creation_time
243 #include "gen_${arch}_regalloc_if.h"
244 #include "gen_${arch}_machine.h"
245 #include "bearch_${arch}_t.h"
246 #include "${arch}_map_regs.h"
251 print OUT "arch_register_class_t ${arch}_reg_classes[] = {\n\t".join(",\n\t", @obst_regclasses)."\n};\n\n";
253 print OUT @obst_regtypes_def, "\n";
255 print OUT "void ${arch}_register_init(void) {\n";
256 print OUT @obst_reginit;
259 print OUT @obst_limit_func;
266 # Gets the variable name for the execution unit assigned to this register.
268 sub get_execunit_variable_name {
271 my $uc_arch = uc($arch);
275 SRCH: foreach my $cur_type (keys(%cpu)) {
276 foreach my $cur_unit (@{ $cpu{"$cur_type"} }) {
277 if ($unit eq $cur_unit) {
278 my $tp_name = "$arch\_execution_units_$cur_type";
279 my $unit_name = "$uc_arch\_EXECUNIT_TP_$cur_type\_$unit";
280 $name = "&".$tp_name."[".$unit_name."]";
288 print STDERR "Invalid execution unit $unit specified!\n";