2 * genmdesc: Generates the machine description
5 * Paolo Molaro (lupus@ximian.com)
7 * (C) 2003 Ximian, Inc.
12 #include <mono/metadata/opcodes.h>
14 #define MINI_OP(a,b,dest,src1,src2) b,
15 #define MINI_OP3(a,b,dest,src1,src2,src3) b,
16 /* keep in sync with the enum in mini.h */
17 static const char* const
25 * Duplicate this from helpers.c, so the opcode name array can be omitted when
30 if (op >= OP_LOAD && op <= OP_LAST)
31 return opnames [op - OP_LOAD];
33 return mono_opcode_name (op);
34 g_error ("unknown opcode name for %d", op);
43 char spec [MONO_INST_MAX];
46 static GHashTable *table;
47 static GHashTable *template_table;
49 #define eat_whitespace(s) while (*(s) && isspace (*(s))) s++;
52 load_file (const char *name) {
60 if (!(f = fopen (name, "r")))
61 g_error ("Cannot open file '%s'", name);
63 comment = g_string_new ("");
65 * The format of the lines are:
67 * opcode: [dest:format] [src1:format] [src2:format] [flags:format] [clob:format]
68 * [cost:num] [res:format] [delay:num] [len:num]
69 * format is a single letter that depends on the field
70 * NOTE: no space between the field name and the ':'
72 * len: maximum instruction length
75 while ((str = fgets (buf, sizeof (buf), f))) {
76 gboolean is_template = FALSE;
82 g_string_append (comment, str);
85 p = strchr (str, ':');
87 g_error ("Invalid format at line %d in %s\n", line, name);
90 if (strcmp (str, "template") == 0) {
92 desc = g_new0 (OpDesc, 1);
94 desc = g_hash_table_lookup (table, str);
96 g_error ("Invalid opcode '%s' at line %d in %s\n", str, line, name);
98 g_error ("Duplicated opcode %s at line %d in %s\n", str, line, name);
100 desc->desc = g_strdup (p);
101 desc->comment = g_strdup (comment->str);
102 g_string_truncate (comment, 0);
104 if (strncmp (p, "dest:", 5) == 0) {
105 desc->spec [MONO_INST_DEST] = p [5];
107 } else if (strncmp (p, "src1:", 5) == 0) {
108 desc->spec [MONO_INST_SRC1] = p [5];
110 } else if (strncmp (p, "src2:", 5) == 0) {
111 desc->spec [MONO_INST_SRC2] = p [5];
113 } else if (strncmp (p, "src3:", 5) == 0) {
114 desc->spec [MONO_INST_SRC3] = p [5];
116 } else if (strncmp (p, "clob:", 5) == 0) {
117 desc->spec [MONO_INST_CLOB] = p [5];
119 /* Currently unused fields
120 } else if (strncmp (p, "cost:", 5) == 0) {
121 desc->spec [MONO_INST_COST] = p [5];
123 } else if (strncmp (p, "res:", 4) == 0) {
124 desc->spec [MONO_INST_RES] = p [4];
126 } else if (strncmp (p, "flags:", 6) == 0) {
127 desc->spec [MONO_INST_FLAGS] = p [6];
129 } else if (strncmp (p, "delay:", 6) == 0) {
130 desc->spec [MONO_INST_DELAY] = p [6];
133 } else if (strncmp (p, "len:", 4) == 0) {
135 desc->spec [MONO_INST_LEN] = strtoul (p, &p, 10);
136 } else if (strncmp (p, "template:", 9) == 0) {
142 while (*p && isalnum (*p)) ++p;
144 tdesc = g_hash_table_lookup (template_table, tname);
146 g_error ("Invalid template name %s at '%s' at line %d in %s\n", tname, p, line, name);
147 for (i = 0; i < MONO_INST_MAX; ++i) {
149 g_error ("The template overrides any previous value set at line %d in %s\n", line, name);
151 memcpy (desc->spec, tdesc->spec, sizeof (desc->spec));
152 } else if (strncmp (p, "name:", 5) == 0) {
155 g_error ("name tag only valid in templates at '%s' at line %d in %s\n", p, line, name);
157 g_error ("Duplicated name tag in template %s at '%s' at line %d in %s\n", desc->name, p, line, name);
160 while (*p && isalnum (*p)) ++p;
162 if (g_hash_table_lookup (template_table, tname))
163 g_error ("Duplicated template %s at line %d in %s\n", tname, line, name);
164 desc->name = g_strdup (tname);
165 g_hash_table_insert (template_table, (void*)desc->name, desc);
167 g_error ("Parse error at '%s' at line %d in %s\n", p, line, name);
171 if (is_template && !desc->name)
172 g_error ("Template without name at line %d in %s\n", line, name);
178 static OpDesc *opcodes = NULL;
185 template_table = g_hash_table_new (g_str_hash, g_str_equal);
186 table = g_hash_table_new (g_str_hash, g_str_equal);
188 opcodes = g_new0 (OpDesc, OP_LAST);
189 for (i = OP_LOAD; i < OP_LAST; ++i) {
192 desc->name = inst_name (i);
193 g_hash_table_insert (table, (char *)desc->name, desc);
198 output_char (FILE *f, char c) {
200 fprintf (f, "%c", c);
202 fprintf (f, "\\x%x\" \"", c);
206 build_table (const char *fname, const char *name) {
210 GString *idx_array = g_string_new ("");
211 /* use this to remove duplicates */
212 GHashTable *desc_ht = g_hash_table_new (g_str_hash, g_str_equal);
214 if (!(f = fopen (fname, "w")))
215 g_error ("Cannot open file '%s'", fname);
216 fprintf (f, "/* File automatically generated by genmdesc, don't change */\n\n");
217 fprintf (f, "const char %s [] = {\n", name);
219 for (j = 0; j < MONO_INST_MAX; ++j)
221 fprintf (f, "\"\t/* null entry */\n");
223 g_string_append_printf (idx_array, "const guint16 %s_idx [] = {\n", name);
225 for (i = OP_LOAD; i < OP_LAST; ++i) {
228 g_string_append_printf (idx_array, "\t0,\t/* %s */\n", desc->name ? desc->name : "");
231 for (j = 0; j < MONO_INST_MAX; ++j)
232 output_char (f, desc->spec [j]);
233 fprintf (f, "\"\t/* %s */\n", desc->name);
234 g_string_append_printf (idx_array, "\t%d,\t/* %s */\n", idx * MONO_INST_MAX, desc->name);
238 fprintf (f, "};\n\n");
239 fprintf (f, "%s};\n\n", idx_array->str);
241 g_string_free (idx_array, TRUE);
242 g_hash_table_destroy (desc_ht);
250 for (i = 0; i < MONO_CEE_LAST; ++i) {
253 g_print ("%s", desc->comment);
255 g_print ("%s:\n", desc->name);
257 g_print ("%s: %s", desc->name, desc->desc);
258 if (!strchr (desc->desc, '\n'))
262 for (i = OP_LOAD; i < OP_LAST; ++i) {
265 g_print ("%s:\n", desc->name);
267 g_print ("%s: %s", desc->name, desc->desc);
268 if (!strchr (desc->desc, '\n'))
275 * TODO: output the table (possibly merged), in the input format
278 main (int argc, char* argv [])
282 /* useful to get a new file when some opcodes are added: looses the comments, though */
283 load_file (argv [1]);
285 } else if (argc < 4) {
286 g_print ("Usage: genmdesc arguments\n");
287 g_print ("\tgenmdesc desc Output to stdout the description file.\n");
288 g_print ("\tgenmdesc output name desc [desc1...] Write to output the description in a table named 'name'.\n");
292 for (i = 3; i < argc; ++i)
293 load_file (argv [i]);
294 build_table (argv [1], argv [2]);