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 = $ARGV[1];
45 unless ($return = do $specfile) {
46 die "Fatal error: couldn't parse $specfile: $@" if $@;
47 die "Fatal error: couldn't do $specfile: $!" unless defined $return;
48 die "Fatal error: couldn't run $specfile" unless $return;
52 my $target_c = $target_dir."/gen_".$arch."_regalloc_if.c";
53 my $target_h = $target_dir."/gen_".$arch."_regalloc_if.h";
56 sub translate_reg_type {
60 return "arch_register_type_none";
66 push(@types, "arch_register_type_caller_save");
70 push(@types, "arch_register_type_callee_save");
74 push(@types, "arch_register_type_ignore");
78 push(@types, "arch_register_type_joker");
82 push(@types, "arch_register_type_virtual");
86 push(@types, "arch_register_type_state");
89 return join(" | ", @types);
94 my @obst_regtypes_def; # stack for the register type variables definitions
95 my @obst_regtypes_decl;# stack for the register type variables declarations
96 my @obst_regclasses; # stack for the register class variables
97 my @obst_classdef; # stack to define a name for a class index
98 my @obst_regdef; # stack to define a name for a register index
99 my @obst_reginit; # stack for the register type inits
100 my @obst_req; # stack for the register requirements
101 my @obst_limit_func; # stack for functions to return a subset of a register class
102 my @obst_header_all; # stack for some extern struct defs needed for bearch_$arch include
113 push(@obst_classdef, "enum reg_classes {\n");
117 # generate register type and class variable, init function and default requirements
118 foreach my $class_name (keys(%reg_classes)) {
119 my @class = @{ $reg_classes{"$class_name"} };
120 my $old_classname = $class_name;
122 $class_name = $arch."_".$class_name;
123 $numregs = "N_".$class_name."_REGS";
124 $class_ptr = "&".$arch."_reg_classes[CLASS_".$class_name."]";
125 $class_mode = pop(@class)->{"mode"};
127 push(@obst_regtypes_decl, "extern const arch_register_t ${class_name}_regs[$numregs];\n");
129 push(@obst_classdef, "\tCLASS_$class_name = $class_idx,\n");
130 push(@obst_regclasses, "{ \"$class_name\", $numregs, NULL, ".$class_name."_regs }");
133 push(@obst_reginit, "\t/* set largest possible mode for '$class_name' */\n");
134 push(@obst_reginit, "\t$arch\_reg_classes[CLASS_".$class_name."].mode = $class_mode;\n\n");
135 push(@obst_regtypes_def, "const arch_register_t ${class_name}_regs[$numregs] = {\n");
137 push(@obst_regdef, "enum reg_${class_name}_indices {\n");
139 my $ucname = uc($_->{"name"});
140 my $type = translate_reg_type($_->{"type"});
141 # realname is name if not set by user
142 $_->{"realname"} = $_->{"name"} if (! exists($_->{"realname"}));
143 my $realname = $_->{realname};
144 my $execunitvarname = get_execunit_variable_name($_->{"unit"});
147 $reg2class{$_->{"name"}} = { "class" => $old_classname, "index" => $idx }; # remember reg to class for later use
148 push(@obst_regdef, "\tREG_${ucname},\n");
150 push(@obst_regtypes_def, "\t{\n");
151 push(@obst_regtypes_def, "\t\t\"$realname\",\n");
152 push(@obst_regtypes_def, "\t\t$class_ptr,\n");
153 push(@obst_regtypes_def, "\t\tREG_${ucname},\n");
154 push(@obst_regtypes_def, "\t\t$type,\n");
155 push(@obst_regtypes_def, "\t\t$execunitvarname\n");
156 push(@obst_regtypes_def, "\t},\n");
160 push(@obst_regtypes_def, "};\n");
162 $regclass2len{$old_classname} = $idx;
163 push(@obst_regdef, "\t$numregs = $idx\n");
164 push(@obst_regdef, "};\n\n");
169 push(@obst_regdef, "enum flag_indices {\n");
170 foreach my $flag (keys(%flags)) {
171 my %f = %{ $flags{$flag} };
173 push(@obst_regdef, "\tFLAG_$flag,\n");
175 push(@obst_regdef, "\tFLAG_LAST\n");
176 push(@obst_regdef, "};\n");
177 push(@obst_regtypes_decl, "extern arch_flag_t ${arch}_flags[];\n");
179 push(@obst_classdef, "\tN_CLASSES = ".scalar(keys(%reg_classes))."\n");
180 push(@obst_classdef, "};\n\n");
184 # generate header (external usage) file
185 open(OUT, ">$target_h") || die("Fatal error: Could not open $target_h, reason: $!\n");
187 my $creation_time = localtime(time());
192 * \@brief Contains additional external requirements defs for external includes.
193 * \@note DO NOT EDIT THIS FILE, your changes will be lost.
194 * Edit $specfile instead.
195 * created by: $0 $specfile $target_dir
196 * \@date $creation_time
198 #ifndef FIRM_BE_${tmp}_GEN_${tmp}_REGALLOC_IF_H
199 #define FIRM_BE_${tmp}_GEN_${tmp}_REGALLOC_IF_H
201 #include "../bearch.h"
202 #include "${arch}_nodes_attr.h"
206 print OUT @obst_regdef, "\n";
208 print OUT @obst_classdef, "\n";
210 print OUT @obst_regtypes_decl, "\n";
212 print OUT "extern arch_register_class_t $arch\_reg_classes[N_CLASSES];\n\n";
214 print OUT "void ".$arch."_register_init(void);\n\n";
216 print OUT @obst_header_all, "\n";
218 print OUT "\n#endif\n";
225 open(OUT, ">$target_c") || die("Fatal error: Could not open $target_c, reason: $!\n");
227 $creation_time = localtime(time());
232 * \@brief The generated interface for the register allocator.
233 * Contains register classes and types and register constraints
234 * for all nodes where constraints were given in spec.
235 * \@note DO NOT EDIT THIS FILE, your changes will be lost.
236 * Edit $specfile instead.
237 * created by: $0 $specfile $target_dir
238 * \$date $creation_time
244 #include "gen_${arch}_regalloc_if.h"
245 #include "gen_${arch}_machine.h"
246 #include "bearch_${arch}_t.h"
247 #include "${arch}_map_regs.h"
252 print OUT "arch_register_class_t ${arch}_reg_classes[] = {\n\t".join(",\n\t", @obst_regclasses)."\n};\n\n";
254 print OUT @obst_regtypes_def, "\n";
256 print OUT "void ${arch}_register_init(void) {\n";
257 print OUT @obst_reginit;
260 print OUT @obst_limit_func;
267 # Gets the variable name for the execution unit assigned to this register.
269 sub get_execunit_variable_name {
272 my $uc_arch = uc($arch);
276 SRCH: foreach my $cur_type (keys(%cpu)) {
277 foreach my $cur_unit (@{ $cpu{"$cur_type"} }) {
278 if ($unit eq $cur_unit) {
279 my $tp_name = "$arch\_execution_units_$cur_type";
280 my $unit_name = "$uc_arch\_EXECUNIT_TP_$cur_type\_$unit";
281 $name = "&".$tp_name."[".$unit_name."]";
289 print STDERR "Invalid execution unit $unit specified!\n";