3 # This script generates C code which emits assembler code for the
4 # assembler ir nodes. It takes a "emit" key from the node specification
5 # and substitutes lines starting with . with a corresponding fprintf().
12 my $specfile = $ARGV[0];
13 my $target_dir = $ARGV[1];
24 unless ($return = do $specfile) {
25 warn "couldn't parse $specfile: $@" if $@;
26 warn "couldn't do $specfile: $!" unless defined $return;
27 warn "couldn't run $specfile" unless $return;
31 my $target_c = $target_dir."/gen_".$arch."_emitter.c";
32 my $target_h = $target_dir."/gen_".$arch."_emitter.h";
35 my @obst_func; # stack for the emit functions
36 my @obst_register; # stack for emitter register code
39 foreach my $op (keys(%nodes)) {
40 my %n = %{ $nodes{"$op"} };
42 # skip this node description if no emit information is available
43 next if (!$n{"emit"} || length($n{"emit"}) < 1);
45 $line = "static void emit_".$arch."_".$op."(const ir_node *n, $arch\_emit_env_t *env)";
46 push(@obst_func, $line." {\n FILE *F = env->out;\n");
47 push(@obst_func, " char cmd_buf[256], cmnt_buf[256];\n");
48 push(@obst_func, " const lc_arg_env_t *arg_env = $arch\_get_arg_env();\n\n");
49 push(@obst_register, " BE_EMIT($op);\n");
51 my @emit = split(/\n/, $n{"emit"});
53 foreach my $template (@emit) {
54 # substitute only lines, starting with a '.'
55 if ($template =~ /^(\d*)\.\s*/) {
56 my $indent = " "; # default indent is 2 spaces
58 $indent = " " x $1 if ($1 && $1 > 0);
59 # remove indent, dot and trailing spaces
60 $template =~ s/^\d*\.\s*//;
65 foreach $template (split(/$comment_string/, $fmt, 2)) {
70 $template =~ s/(\\t)*$//;
73 # add the comment begin string
74 $res .= $comment_string;
78 # substitute all format parameter
79 while ($template =~ /\%([ASD])(\d)|\%([COM])|\%(\w+)/) {
80 $res .= $`; # get everything before the match
82 if ($1 && $1 eq "S") {
84 $res .= "%".$2."S"; # substitute %Sx with %xS
86 elsif ($1 && $1 eq "D") {
88 $res .= "%".$2."D"; # substitute %Dx with %xD
90 elsif ($1 && $1 eq "A") {
91 push(@params, "get_irn_n(n, ".($2 - 1).")");
98 elsif ($4) { # backend provided function to call, has to return a string
99 push(@params, $4."(n, env)");
103 $template = $'; # scan everything after the match
105 $res .= $template; # get the remaining string
108 $parm = ", ".join(", ", @params) if (@params);
110 push(@obst_func, $indent.'lc_esnprintf(arg_env, '.$buf.', 256, "'.$res.'"'.$parm.');'."\n");
114 push(@obst_func, $template,"\n");
118 push(@obst_func, ' lc_efprintf(arg_env, F, "\t%-35s %-60s /* %+F */\n", cmd_buf, cmnt_buf, n);'."\n");
119 push(@obst_func, "}\n\n");
122 open(OUT, ">$target_h") || die("Could not open $target_h, reason: $!\n");
124 my $creation_time = localtime(time());
129 #ifndef _GEN_$tmp\_EMITTER_H_
130 #define _GEN_$tmp\_EMITTER_H_
133 * Function prototypes for the emitter functions.
134 * DO NOT EDIT THIS FILE, your changes will be lost.
135 * Edit $specfile instead.
136 * created by: $0 $specfile $target_dir
137 * date: $creation_time
141 #include "$arch\_emitter.h"
143 void $arch\_register_spec_emitters(void);
145 #endif /* _GEN_$tmp\_EMITTER_H_ */
151 open(OUT, ">$target_c") || die("Could not open $target_c, reason: $!\n");
153 $creation_time = localtime(time());
157 * Generated functions to emit code for assembler ir nodes.
158 * DO NOT EDIT THIS FILE, your changes will be lost.
159 * Edit $specfile instead.
160 * created by: $0 $specfile $target_dir
161 * date: $creation_time
171 #include "irprog_t.h"
173 #include "gen_$arch\_emitter.h"
174 #include "$arch\_new_nodes.h"
178 print OUT @obst_func;
182 * Enters the emitter functions for handled nodes into the generic
183 * pointer of an opcode.
185 void $arch\_register_spec_emitters(void) {
187 #define BE_EMIT(a) op_$arch\_##a->ops.generic = (op_func)emit_$arch\_##a
189 /* generated emitter functions */
192 print OUT @obst_register;