nsz Git - libfirm/blob - ir/be/scripts/generate_emitter.pl

   1 #!/usr/bin/perl -w
   2
   3 #
   4 # Copyright (C) 1995-2008 University of Karlsruhe.  All right reserved.
   5 #
   6 # This file is part of libFirm.
   7 #
   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.
  12 #
  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.
  16 #
  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
  19 # PURPOSE.
  20 #
  21
  22 # This script generates C code which emits assembler code for the
  23 # assembler ir nodes. It takes a "emit" key from the node specification
  24 # and substitutes lines starting with . with a corresponding fprintf().
  25 # Creation: 2005/11/07
  26
  27 use strict;
  28 use Data::Dumper;
  29 use File::Basename;
  30
  31 my $myname = $0;
  32 our $specfile   = $ARGV[0];
  33 our $target_dir = $ARGV[1];
  34
  35 our $arch;
  36 our $comment_string = "/*";
  37 our $comment_string_end = "*/" ;
  38 our %nodes;
  39 our $new_emit_syntax = 1;
  40
  41 # include spec file
  42
  43 my $return;
  44
  45 no strict "subs";
  46 unless ($return = do $specfile) {
  47         die "Fatal error: couldn't parse $specfile: $@" if $@;
  48         die "Fatal error: couldn't do $specfile: $!"    unless defined $return;
  49         die "Fatal error: couldn't run $specfile"       unless $return;
  50 }
  51 use strict "subs";
  52
  53 if ($new_emit_syntax) {
  54         my $newscript = dirname($myname) . "/generate_emitter_new.pl";
  55         unless ($return = do "$newscript") {
  56                 die "Fatal error: couldn't parse $newscript: $@" if $@;
  57                 die "Fatal error: couldn't do $newscript: $!"    unless defined $return;
  58                 die "Fatal error: couldn't run $newscript"       unless $return;
  59         }
  60         exit;
  61 }
  62
  63 my $comment_string_quoted = quotemeta($comment_string);
  64
  65 my $target_c = $target_dir."/gen_".$arch."_emitter.c";
  66 my $target_h = $target_dir."/gen_".$arch."_emitter.h";
  67
  68 # stacks for output
  69 my @obst_func;   # stack for the emit functions
  70 my @obst_register;  # stack for emitter register code
  71 my $line;
  72
  73 foreach my $op (keys(%nodes)) {
  74         my %n = %{ $nodes{"$op"} };
  75
  76         # skip this node description if no emit information is available
  77         next if (!defined($n{"emit"}));
  78
  79         $line = "static void emit_".$arch."_".$op."(const ir_node *n, $arch\_emit_env_t *env)";
  80
  81         push(@obst_register, "  BE_EMIT($op);\n");
  82
  83         if($n{"emit"} eq "") {
  84                 push(@obst_func, $line." {\n");
  85                 push(@obst_func, "}\n\n");
  86                 next;
  87         }
  88
  89         push(@obst_func, $line." {\n  FILE *F = env->out;\n");
  90         push(@obst_func, "  char cmd_buf[256], cmnt_buf[256];\n");
  91         push(@obst_func, "  const lc_arg_env_t *arg_env = $arch\_get_arg_env();\n\n");
  92         my @emit = split(/\n/, $n{"emit"});
  93
  94         foreach my $template (@emit) {
  95                 # substitute only lines, starting with a '.'
  96                 if ($template =~ /^(\d*)\.\s*/) {
  97                         my $indent = "  "; # default indent is 2 spaces
  98
  99                         $indent = " " x $1 if ($1 && $1 > 0);
 100                         # remove indent, dot and trailing spaces
 101                         $template =~ s/^\d*\.\s*//;
 102                         my $fmt = $template;
 103                         my $cnt = 0;
 104                         my $buf = 'cmd_buf';
 105
 106                         push(@obst_func, $indent."cmnt_buf[0] = '\\0';\n");
 107                         foreach $template (split(/$comment_string_quoted/, $fmt, 2)) {
 108                                 my @params;
 109                                 my $res = "";
 110                                 $cnt++;
 111
 112                                 $template =~ s/(\\t)*$//;
 113
 114                                 if ($cnt == 2) {
 115                                         # add the comment begin string
 116                                         $res .= $comment_string;
 117                                         $buf  = "cmnt_buf";
 118                                 }
 119
 120                                 # substitute all format parameter
 121                                 while ($template =~ /(\%\%)|\%([ASDX])(\d)|\%([COM])|\%(\w+)/) {
 122                                         $res  .= $`;      # get everything before the match
 123
 124                                         if ($1) {
 125                                                 $res .= "%%";
 126                                         }
 127                                         elsif ($2 && $2 eq "S") {
 128                                                 push(@params, "n");
 129                                                 $res .= "%".$3."S"; # substitute %Sx with %xS
 130                                         }
 131                                         elsif ($2 && $2 eq "D") {
 132                                                 push(@params, "n");
 133                                                 $res .= "%".$3."D"; # substitute %Dx with %xD
 134                                         }
 135                                         elsif ($2 && $2 eq "X") {
 136                                                 push(@params, "n");
 137                                                 $res .= "%".$3."X"; # substitute %Xx with %xX
 138                                         }
 139                                         elsif ($2 && $2 eq "A") {
 140                                                 push(@params, "get_irn_n(n, ".($3 - 1).")");
 141                                                 $res .= "%+F";
 142                                         }
 143                                         elsif ($4) {
 144                                                 push(@params, "n");
 145                                                 $res .= "%".$4;
 146                                         }
 147                                         elsif ($5) {  # backend provided function to call, has to return a string
 148                                                 push(@params, $5."(n, env)");
 149                                                 $res .= "\%s";
 150                                         }
 151
 152                                         $template = $'; # scan everything after the match
 153                                 }
 154                                 $res .= $template; # get the remaining string
 155
 156                                 my $parm = "";
 157                                 $parm = ", ".join(", ", @params) if (@params);
 158
 159                                 push(@obst_func, $indent.'lc_esnprintf(arg_env, '.$buf.', 256, "'.$res.'"'.$parm.');'."\n");
 160                         }
 161                         push(@obst_func, $indent.'lc_efprintf(arg_env, F, "\t%-35s %-60s '.$comment_string.' %+F (%+G) '.$comment_string_end.'\n", cmd_buf, cmnt_buf, n, n);'."\n");
 162                 }
 163                 else {
 164                         push(@obst_func, $template,"\n");
 165                 }
 166         }
 167
 168         push(@obst_func, "}\n\n");
 169 }
 170
 171 open(OUT, ">$target_h") || die("Fatal error: Could not open $target_h, reason: $!\n");
 172
 173 my $creation_time = localtime(time());
 174
 175 my $tmp = uc($arch);
 176
 177 print OUT<<EOF;
 178 /**
 179  * \@file
 180  * \@brief Function prototypes for the emitter functions.
 181  * \@note  DO NOT EDIT THIS FILE, your changes will be lost.
 182  *        Edit $specfile instead.
 183  *        created by: $0 $specfile $target_dir
 184  * \@date  $creation_time
 185  */
 186 #ifndef FIRM_BE_${tmp}_GEN_${tmp}_EMITTER_H
 187 #define FIRM_BE_${tmp}_GEN_${tmp}_EMITTER_H
 188
 189 #include "irnode.h"
 190 #include "$arch\_emitter.h"
 191
 192 void $arch\_register_spec_emitters(void);
 193
 194 #endif
 195
 196 EOF
 197
 198 close(OUT);
 199
 200 open(OUT, ">$target_c") || die("Fatal error: Could not open $target_c, reason: $!\n");
 201
 202 $creation_time = localtime(time());
 203
 204 print OUT<<EOF;
 205 /**
 206  * \@file
 207  * \@brief  Generated functions to emit code for assembler ir nodes.
 208  * \@note   DO NOT EDIT THIS FILE, your changes will be lost.
 209  *         Edit $specfile instead.
 210  *         created by: $0 $specfile $target_dir
 211  * \@date   $creation_time
 212  */
 213 #include "config.h"
 214
 215 #include <stdio.h>
 216
 217 #include "irnode.h"
 218 #include "irop_t.h"
 219 #include "irprog_t.h"
 220
 221 #include "gen_$arch\_emitter.h"
 222 #include "$arch\_new_nodes.h"
 223
 224 EOF
 225
 226 print OUT @obst_func;
 227
 228 print OUT<<EOF;
 229 /**
 230  * Enters the emitter functions for handled nodes into the generic
 231  * pointer of an opcode.
 232  */
 233 void $arch\_register_spec_emitters(void) {
 234
 235 #define BE_EMIT(a) op_$arch\_##a->ops.generic = (op_func)emit_$arch\_##a
 236
 237   /* generated emitter functions */
 238 EOF
 239
 240 print OUT @obst_register;
 241
 242 print OUT<<EOF;
 243
 244 #undef BE_EMIT
 245 }
 246
 247 EOF
 248
 249 close(OUT);