Commit | Line | Data |
---|---|---|
fea17916 | 1 | /* macro.c - macro support for gas |
2da5c037 | 2 | Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
818236e5 | 3 | 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc. |
252b5132 RH |
4 | |
5 | Written by Steve and Judy Chamberlain of Cygnus Support, | |
6 | sac@cygnus.com | |
7 | ||
8 | This file is part of GAS, the GNU Assembler. | |
9 | ||
10 | GAS is free software; you can redistribute it and/or modify | |
11 | it under the terms of the GNU General Public License as published by | |
ec2655a6 | 12 | the Free Software Foundation; either version 3, or (at your option) |
252b5132 RH |
13 | any later version. |
14 | ||
15 | GAS is distributed in the hope that it will be useful, | |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
19 | ||
20 | You should have received a copy of the GNU General Public License | |
21 | along with GAS; see the file COPYING. If not, write to the Free | |
4b4da160 NC |
22 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
23 | 02110-1301, USA. */ | |
252b5132 | 24 | |
89658e52 | 25 | #include "as.h" |
3882b010 | 26 | #include "safe-ctype.h" |
252b5132 | 27 | #include "sb.h" |
252b5132 RH |
28 | #include "macro.h" |
29 | ||
252b5132 | 30 | /* The routines in this file handle macro definition and expansion. |
fea17916 | 31 | They are called by gas. */ |
252b5132 | 32 | |
252b5132 RH |
33 | #define ISWHITE(x) ((x) == ' ' || (x) == '\t') |
34 | ||
35 | #define ISSEP(x) \ | |
36 | ((x) == ' ' || (x) == '\t' || (x) == ',' || (x) == '"' || (x) == ';' \ | |
37 | || (x) == ')' || (x) == '(' \ | |
38 | || ((macro_alternate || macro_mri) && ((x) == '<' || (x) == '>'))) | |
39 | ||
40 | #define ISBASE(x) \ | |
41 | ((x) == 'b' || (x) == 'B' \ | |
42 | || (x) == 'q' || (x) == 'Q' \ | |
43 | || (x) == 'h' || (x) == 'H' \ | |
44 | || (x) == 'd' || (x) == 'D') | |
45 | ||
46 | /* The macro hash table. */ | |
47 | ||
c1d05a60 | 48 | struct hash_control *macro_hash; |
252b5132 RH |
49 | |
50 | /* Whether any macros have been defined. */ | |
51 | ||
52 | int macro_defined; | |
53 | ||
fea17916 | 54 | /* Whether we are in alternate syntax mode. */ |
252b5132 RH |
55 | |
56 | static int macro_alternate; | |
57 | ||
58 | /* Whether we are in MRI mode. */ | |
59 | ||
60 | static int macro_mri; | |
61 | ||
62 | /* Whether we should strip '@' characters. */ | |
63 | ||
64 | static int macro_strip_at; | |
65 | ||
66 | /* Function to use to parse an expression. */ | |
67 | ||
254d758c | 68 | static int (*macro_expr) (const char *, int, sb *, int *); |
252b5132 RH |
69 | |
70 | /* Number of macro expansions that have been done. */ | |
71 | ||
72 | static int macro_number; | |
73 | ||
74 | /* Initialize macro processing. */ | |
75 | ||
76 | void | |
254d758c | 77 | macro_init (int alternate, int mri, int strip_at, |
91d6fa6a | 78 | int (*exp) (const char *, int, sb *, int *)) |
252b5132 RH |
79 | { |
80 | macro_hash = hash_new (); | |
81 | macro_defined = 0; | |
82 | macro_alternate = alternate; | |
83 | macro_mri = mri; | |
84 | macro_strip_at = strip_at; | |
91d6fa6a | 85 | macro_expr = exp; |
252b5132 RH |
86 | } |
87 | ||
caa32fe5 NC |
88 | /* Switch in and out of alternate mode on the fly. */ |
89 | ||
90 | void | |
2766e5e4 | 91 | macro_set_alternate (int alternate) |
caa32fe5 NC |
92 | { |
93 | macro_alternate = alternate; | |
94 | } | |
95 | ||
252b5132 RH |
96 | /* Switch in and out of MRI mode on the fly. */ |
97 | ||
98 | void | |
254d758c | 99 | macro_mri_mode (int mri) |
252b5132 RH |
100 | { |
101 | macro_mri = mri; | |
102 | } | |
103 | ||
104 | /* Read input lines till we get to a TO string. | |
105 | Increase nesting depth if we get a FROM string. | |
106 | Put the results into sb at PTR. | |
ca3bc58f | 107 | FROM may be NULL (or will be ignored) if TO is "ENDR". |
252b5132 RH |
108 | Add a new input line to an sb using GET_LINE. |
109 | Return 1 on success, 0 on unexpected EOF. */ | |
110 | ||
111 | int | |
254d758c KH |
112 | buffer_and_nest (const char *from, const char *to, sb *ptr, |
113 | int (*get_line) (sb *)) | |
252b5132 | 114 | { |
ca3bc58f | 115 | int from_len; |
252b5132 RH |
116 | int to_len = strlen (to); |
117 | int depth = 1; | |
118 | int line_start = ptr->len; | |
119 | ||
120 | int more = get_line (ptr); | |
121 | ||
ca3bc58f JB |
122 | if (to_len == 4 && strcasecmp(to, "ENDR") == 0) |
123 | { | |
124 | from = NULL; | |
125 | from_len = 0; | |
126 | } | |
127 | else | |
128 | from_len = strlen (from); | |
129 | ||
252b5132 RH |
130 | while (more) |
131 | { | |
0e470c55 | 132 | /* Try to find the first pseudo op on the line. */ |
252b5132 | 133 | int i = line_start; |
f19df8f7 | 134 | bfd_boolean had_colon = FALSE; |
252b5132 | 135 | |
0e470c55 AM |
136 | /* With normal syntax we can suck what we want till we get |
137 | to the dot. With the alternate, labels have to start in | |
138 | the first column, since we can't tell what's a label and | |
139 | what's a pseudoop. */ | |
252b5132 | 140 | |
0e470c55 AM |
141 | if (! LABELS_WITHOUT_COLONS) |
142 | { | |
143 | /* Skip leading whitespace. */ | |
144 | while (i < ptr->len && ISWHITE (ptr->ptr[i])) | |
145 | i++; | |
146 | } | |
252b5132 | 147 | |
0e470c55 AM |
148 | for (;;) |
149 | { | |
150 | /* Skip over a label, if any. */ | |
151 | if (i >= ptr->len || ! is_name_beginner (ptr->ptr[i])) | |
152 | break; | |
153 | i++; | |
154 | while (i < ptr->len && is_part_of_name (ptr->ptr[i])) | |
155 | i++; | |
156 | if (i < ptr->len && is_name_ender (ptr->ptr[i])) | |
157 | i++; | |
0e470c55 AM |
158 | /* Skip whitespace. */ |
159 | while (i < ptr->len && ISWHITE (ptr->ptr[i])) | |
160 | i++; | |
161 | /* Check for the colon. */ | |
162 | if (i >= ptr->len || ptr->ptr[i] != ':') | |
5e75c3ab | 163 | { |
f19df8f7 AM |
164 | /* LABELS_WITHOUT_COLONS doesn't mean we cannot have a |
165 | colon after a label. If we do have a colon on the | |
166 | first label then handle more than one label on the | |
167 | line, assuming that each label has a colon. */ | |
168 | if (LABELS_WITHOUT_COLONS && !had_colon) | |
169 | break; | |
0e470c55 AM |
170 | i = line_start; |
171 | break; | |
5e75c3ab | 172 | } |
0e470c55 AM |
173 | i++; |
174 | line_start = i; | |
f19df8f7 | 175 | had_colon = TRUE; |
252b5132 | 176 | } |
0e470c55 | 177 | |
29f8404c | 178 | /* Skip trailing whitespace. */ |
252b5132 RH |
179 | while (i < ptr->len && ISWHITE (ptr->ptr[i])) |
180 | i++; | |
181 | ||
182 | if (i < ptr->len && (ptr->ptr[i] == '.' | |
ca3bc58f | 183 | || NO_PSEUDO_DOT |
252b5132 RH |
184 | || macro_mri)) |
185 | { | |
ca3bc58f | 186 | if (! flag_m68k_mri && ptr->ptr[i] == '.') |
29f8404c | 187 | i++; |
ca3bc58f JB |
188 | if (from == NULL |
189 | && strncasecmp (ptr->ptr + i, "IRPC", from_len = 4) != 0 | |
190 | && strncasecmp (ptr->ptr + i, "IRP", from_len = 3) != 0 | |
191 | && strncasecmp (ptr->ptr + i, "IREPC", from_len = 5) != 0 | |
192 | && strncasecmp (ptr->ptr + i, "IREP", from_len = 4) != 0 | |
193 | && strncasecmp (ptr->ptr + i, "REPT", from_len = 4) != 0 | |
194 | && strncasecmp (ptr->ptr + i, "REP", from_len = 3) != 0) | |
195 | from_len = 0; | |
196 | if ((from != NULL | |
197 | ? strncasecmp (ptr->ptr + i, from, from_len) == 0 | |
198 | : from_len > 0) | |
29f8404c | 199 | && (ptr->len == (i + from_len) |
5e75c3ab JB |
200 | || ! (is_part_of_name (ptr->ptr[i + from_len]) |
201 | || is_name_ender (ptr->ptr[i + from_len])))) | |
252b5132 | 202 | depth++; |
c1eae114 | 203 | if (strncasecmp (ptr->ptr + i, to, to_len) == 0 |
29f8404c | 204 | && (ptr->len == (i + to_len) |
5e75c3ab JB |
205 | || ! (is_part_of_name (ptr->ptr[i + to_len]) |
206 | || is_name_ender (ptr->ptr[i + to_len])))) | |
252b5132 RH |
207 | { |
208 | depth--; | |
209 | if (depth == 0) | |
210 | { | |
29f8404c | 211 | /* Reset the string to not include the ending rune. */ |
252b5132 RH |
212 | ptr->len = line_start; |
213 | break; | |
214 | } | |
215 | } | |
216 | } | |
217 | ||
0822d075 NC |
218 | /* Add the original end-of-line char to the end and keep running. */ |
219 | sb_add_char (ptr, more); | |
252b5132 RH |
220 | line_start = ptr->len; |
221 | more = get_line (ptr); | |
222 | } | |
223 | ||
224 | /* Return 1 on success, 0 on unexpected EOF. */ | |
225 | return depth == 0; | |
226 | } | |
227 | ||
228 | /* Pick up a token. */ | |
229 | ||
230 | static int | |
254d758c | 231 | get_token (int idx, sb *in, sb *name) |
252b5132 RH |
232 | { |
233 | if (idx < in->len | |
5e75c3ab | 234 | && is_name_beginner (in->ptr[idx])) |
252b5132 RH |
235 | { |
236 | sb_add_char (name, in->ptr[idx++]); | |
237 | while (idx < in->len | |
5e75c3ab JB |
238 | && is_part_of_name (in->ptr[idx])) |
239 | { | |
240 | sb_add_char (name, in->ptr[idx++]); | |
241 | } | |
242 | if (idx < in->len | |
243 | && is_name_ender (in->ptr[idx])) | |
252b5132 RH |
244 | { |
245 | sb_add_char (name, in->ptr[idx++]); | |
246 | } | |
247 | } | |
29f8404c | 248 | /* Ignore trailing &. */ |
252b5132 RH |
249 | if (macro_alternate && idx < in->len && in->ptr[idx] == '&') |
250 | idx++; | |
251 | return idx; | |
252 | } | |
253 | ||
254 | /* Pick up a string. */ | |
255 | ||
256 | static int | |
254d758c | 257 | getstring (int idx, sb *in, sb *acc) |
252b5132 | 258 | { |
252b5132 | 259 | while (idx < in->len |
29f8404c | 260 | && (in->ptr[idx] == '"' |
252b5132 RH |
261 | || (in->ptr[idx] == '<' && (macro_alternate || macro_mri)) |
262 | || (in->ptr[idx] == '\'' && macro_alternate))) | |
263 | { | |
2f6178c1 | 264 | if (in->ptr[idx] == '<') |
252b5132 RH |
265 | { |
266 | int nest = 0; | |
267 | idx++; | |
0e31b3e1 | 268 | while ((in->ptr[idx] != '>' || nest) |
252b5132 RH |
269 | && idx < in->len) |
270 | { | |
271 | if (in->ptr[idx] == '!') | |
272 | { | |
29f8404c | 273 | idx++; |
252b5132 RH |
274 | sb_add_char (acc, in->ptr[idx++]); |
275 | } | |
276 | else | |
277 | { | |
0e31b3e1 | 278 | if (in->ptr[idx] == '>') |
252b5132 | 279 | nest--; |
0e31b3e1 | 280 | if (in->ptr[idx] == '<') |
252b5132 RH |
281 | nest++; |
282 | sb_add_char (acc, in->ptr[idx++]); | |
283 | } | |
284 | } | |
285 | idx++; | |
286 | } | |
287 | else if (in->ptr[idx] == '"' || in->ptr[idx] == '\'') | |
288 | { | |
289 | char tchar = in->ptr[idx]; | |
c06ae4f2 | 290 | int escaped = 0; |
29f8404c | 291 | |
252b5132 | 292 | idx++; |
29f8404c | 293 | |
252b5132 RH |
294 | while (idx < in->len) |
295 | { | |
29f8404c | 296 | if (in->ptr[idx - 1] == '\\') |
c06ae4f2 UC |
297 | escaped ^= 1; |
298 | else | |
299 | escaped = 0; | |
300 | ||
252b5132 RH |
301 | if (macro_alternate && in->ptr[idx] == '!') |
302 | { | |
e972090a | 303 | idx ++; |
29f8404c | 304 | |
1994a7c7 NC |
305 | sb_add_char (acc, in->ptr[idx]); |
306 | ||
e972090a | 307 | idx ++; |
252b5132 | 308 | } |
c06ae4f2 UC |
309 | else if (escaped && in->ptr[idx] == tchar) |
310 | { | |
311 | sb_add_char (acc, tchar); | |
e972090a | 312 | idx ++; |
c06ae4f2 | 313 | } |
252b5132 RH |
314 | else |
315 | { | |
316 | if (in->ptr[idx] == tchar) | |
317 | { | |
e972090a | 318 | idx ++; |
29f8404c | 319 | |
252b5132 RH |
320 | if (idx >= in->len || in->ptr[idx] != tchar) |
321 | break; | |
322 | } | |
29f8404c | 323 | |
252b5132 | 324 | sb_add_char (acc, in->ptr[idx]); |
e972090a | 325 | idx ++; |
252b5132 RH |
326 | } |
327 | } | |
328 | } | |
329 | } | |
29f8404c | 330 | |
252b5132 RH |
331 | return idx; |
332 | } | |
333 | ||
334 | /* Fetch string from the input stream, | |
335 | rules: | |
336 | 'Bxyx<whitespace> -> return 'Bxyza | |
df40eaf9 NC |
337 | %<expr> -> return string of decimal value of <expr> |
338 | "string" -> return string | |
2f6178c1 | 339 | (string) -> return (string-including-whitespaces) |
df40eaf9 | 340 | xyx<whitespace> -> return xyz. */ |
252b5132 RH |
341 | |
342 | static int | |
be03cc84 | 343 | get_any_string (int idx, sb *in, sb *out) |
252b5132 RH |
344 | { |
345 | sb_reset (out); | |
346 | idx = sb_skip_white (idx, in); | |
347 | ||
348 | if (idx < in->len) | |
349 | { | |
9df59bba | 350 | if (in->len > idx + 2 && in->ptr[idx + 1] == '\'' && ISBASE (in->ptr[idx])) |
252b5132 RH |
351 | { |
352 | while (!ISSEP (in->ptr[idx])) | |
353 | sb_add_char (out, in->ptr[idx++]); | |
354 | } | |
be03cc84 | 355 | else if (in->ptr[idx] == '%' && macro_alternate) |
252b5132 RH |
356 | { |
357 | int val; | |
358 | char buf[20]; | |
df40eaf9 | 359 | |
29f8404c | 360 | /* Turns the next expression into a string. */ |
06f030db | 361 | /* xgettext: no-c-format */ |
252b5132 RH |
362 | idx = (*macro_expr) (_("% operator needs absolute expression"), |
363 | idx + 1, | |
364 | in, | |
365 | &val); | |
d1a6c242 | 366 | sprintf (buf, "%d", val); |
252b5132 RH |
367 | sb_add_string (out, buf); |
368 | } | |
369 | else if (in->ptr[idx] == '"' | |
370 | || (in->ptr[idx] == '<' && (macro_alternate || macro_mri)) | |
371 | || (macro_alternate && in->ptr[idx] == '\'')) | |
372 | { | |
9f6f925e | 373 | if (macro_alternate && ! macro_strip_at && in->ptr[idx] != '<') |
252b5132 | 374 | { |
29f8404c | 375 | /* Keep the quotes. */ |
9f6f925e | 376 | sb_add_char (out, '"'); |
252b5132 | 377 | idx = getstring (idx, in, out); |
9f6f925e | 378 | sb_add_char (out, '"'); |
252b5132 RH |
379 | } |
380 | else | |
381 | { | |
382 | idx = getstring (idx, in, out); | |
383 | } | |
384 | } | |
29f8404c | 385 | else |
252b5132 | 386 | { |
1e9cc1c2 | 387 | char *br_buf = (char *) xmalloc(1); |
0e31b3e1 JB |
388 | char *in_br = br_buf; |
389 | ||
390 | *in_br = '\0'; | |
29f8404c | 391 | while (idx < in->len |
0e31b3e1 JB |
392 | && (*in_br |
393 | || (in->ptr[idx] != ' ' | |
394 | && in->ptr[idx] != '\t')) | |
be03cc84 JB |
395 | && in->ptr[idx] != ',' |
396 | && (in->ptr[idx] != '<' | |
397 | || (! macro_alternate && ! macro_mri))) | |
252b5132 | 398 | { |
0e31b3e1 | 399 | char tchar = in->ptr[idx]; |
df40eaf9 | 400 | |
0e31b3e1 JB |
401 | switch (tchar) |
402 | { | |
403 | case '"': | |
404 | case '\'': | |
252b5132 RH |
405 | sb_add_char (out, in->ptr[idx++]); |
406 | while (idx < in->len | |
407 | && in->ptr[idx] != tchar) | |
29f8404c | 408 | sb_add_char (out, in->ptr[idx++]); |
252b5132 | 409 | if (idx == in->len) |
29f8404c | 410 | return idx; |
0e31b3e1 JB |
411 | break; |
412 | case '(': | |
413 | case '[': | |
414 | if (in_br > br_buf) | |
415 | --in_br; | |
416 | else | |
417 | { | |
1e9cc1c2 | 418 | br_buf = (char *) xmalloc(strlen(in_br) + 2); |
0e31b3e1 JB |
419 | strcpy(br_buf + 1, in_br); |
420 | free(in_br); | |
421 | in_br = br_buf; | |
422 | } | |
423 | *in_br = tchar; | |
424 | break; | |
425 | case ')': | |
426 | if (*in_br == '(') | |
427 | ++in_br; | |
428 | break; | |
429 | case ']': | |
430 | if (*in_br == '[') | |
431 | ++in_br; | |
432 | break; | |
252b5132 | 433 | } |
0e31b3e1 JB |
434 | sb_add_char (out, tchar); |
435 | ++idx; | |
252b5132 | 436 | } |
0e31b3e1 | 437 | free(br_buf); |
252b5132 RH |
438 | } |
439 | } | |
440 | ||
441 | return idx; | |
442 | } | |
443 | ||
6eaeac8a JB |
444 | /* Allocate a new formal. */ |
445 | ||
446 | static formal_entry * | |
447 | new_formal (void) | |
448 | { | |
449 | formal_entry *formal; | |
450 | ||
1e9cc1c2 | 451 | formal = (formal_entry *) xmalloc (sizeof (formal_entry)); |
6eaeac8a JB |
452 | |
453 | sb_new (&formal->name); | |
454 | sb_new (&formal->def); | |
455 | sb_new (&formal->actual); | |
456 | formal->next = NULL; | |
457 | formal->type = FORMAL_OPTIONAL; | |
458 | return formal; | |
459 | } | |
460 | ||
461 | /* Free a formal. */ | |
462 | ||
463 | static void | |
464 | del_formal (formal_entry *formal) | |
465 | { | |
466 | sb_kill (&formal->actual); | |
467 | sb_kill (&formal->def); | |
468 | sb_kill (&formal->name); | |
469 | free (formal); | |
470 | } | |
471 | ||
252b5132 RH |
472 | /* Pick up the formal parameters of a macro definition. */ |
473 | ||
474 | static int | |
254d758c | 475 | do_formals (macro_entry *macro, int idx, sb *in) |
252b5132 RH |
476 | { |
477 | formal_entry **p = ¯o->formals; | |
02ddf156 | 478 | const char *name; |
252b5132 | 479 | |
057f53c1 | 480 | idx = sb_skip_white (idx, in); |
252b5132 RH |
481 | while (idx < in->len) |
482 | { | |
6eaeac8a | 483 | formal_entry *formal = new_formal (); |
057f53c1 | 484 | int cidx; |
252b5132 | 485 | |
252b5132 RH |
486 | idx = get_token (idx, in, &formal->name); |
487 | if (formal->name.len == 0) | |
057f53c1 JB |
488 | { |
489 | if (macro->formal_count) | |
490 | --idx; | |
491 | break; | |
492 | } | |
252b5132 | 493 | idx = sb_skip_white (idx, in); |
057f53c1 | 494 | /* This is a formal. */ |
6eaeac8a JB |
495 | name = sb_terminate (&formal->name); |
496 | if (! macro_mri | |
497 | && idx < in->len | |
498 | && in->ptr[idx] == ':' | |
499 | && (! is_name_beginner (':') | |
500 | || idx + 1 >= in->len | |
501 | || ! is_part_of_name (in->ptr[idx + 1]))) | |
502 | { | |
503 | /* Got a qualifier. */ | |
504 | sb qual; | |
505 | ||
506 | sb_new (&qual); | |
507 | idx = get_token (sb_skip_white (idx + 1, in), in, &qual); | |
508 | sb_terminate (&qual); | |
509 | if (qual.len == 0) | |
510 | as_bad_where (macro->file, | |
511 | macro->line, | |
512 | _("Missing parameter qualifier for `%s' in macro `%s'"), | |
513 | name, | |
514 | macro->name); | |
515 | else if (strcmp (qual.ptr, "req") == 0) | |
516 | formal->type = FORMAL_REQUIRED; | |
517 | else if (strcmp (qual.ptr, "vararg") == 0) | |
518 | formal->type = FORMAL_VARARG; | |
519 | else | |
520 | as_bad_where (macro->file, | |
521 | macro->line, | |
522 | _("`%s' is not a valid parameter qualifier for `%s' in macro `%s'"), | |
523 | qual.ptr, | |
524 | name, | |
525 | macro->name); | |
526 | sb_kill (&qual); | |
527 | idx = sb_skip_white (idx, in); | |
528 | } | |
057f53c1 | 529 | if (idx < in->len && in->ptr[idx] == '=') |
252b5132 | 530 | { |
057f53c1 | 531 | /* Got a default. */ |
be03cc84 | 532 | idx = get_any_string (idx + 1, in, &formal->def); |
057f53c1 | 533 | idx = sb_skip_white (idx, in); |
6eaeac8a JB |
534 | if (formal->type == FORMAL_REQUIRED) |
535 | { | |
536 | sb_reset (&formal->def); | |
537 | as_warn_where (macro->file, | |
538 | macro->line, | |
539 | _("Pointless default value for required parameter `%s' in macro `%s'"), | |
540 | name, | |
541 | macro->name); | |
542 | } | |
252b5132 RH |
543 | } |
544 | ||
29f8404c | 545 | /* Add to macro's hash table. */ |
02ddf156 JB |
546 | if (! hash_find (macro->formal_hash, name)) |
547 | hash_jam (macro->formal_hash, name, formal); | |
548 | else | |
549 | as_bad_where (macro->file, | |
550 | macro->line, | |
551 | _("A parameter named `%s' already exists for macro `%s'"), | |
552 | name, | |
553 | macro->name); | |
252b5132 | 554 | |
057f53c1 | 555 | formal->index = macro->formal_count++; |
6eaeac8a JB |
556 | *p = formal; |
557 | p = &formal->next; | |
558 | if (formal->type == FORMAL_VARARG) | |
559 | break; | |
057f53c1 | 560 | cidx = idx; |
252b5132 | 561 | idx = sb_skip_comma (idx, in); |
057f53c1 JB |
562 | if (idx != cidx && idx >= in->len) |
563 | { | |
564 | idx = cidx; | |
565 | break; | |
566 | } | |
252b5132 RH |
567 | } |
568 | ||
569 | if (macro_mri) | |
570 | { | |
6eaeac8a | 571 | formal_entry *formal = new_formal (); |
252b5132 RH |
572 | |
573 | /* Add a special NARG formal, which macro_expand will set to the | |
574 | number of arguments. */ | |
252b5132 RH |
575 | /* The same MRI assemblers which treat '@' characters also use |
576 | the name $NARG. At least until we find an exception. */ | |
577 | if (macro_strip_at) | |
578 | name = "$NARG"; | |
579 | else | |
580 | name = "NARG"; | |
581 | ||
582 | sb_add_string (&formal->name, name); | |
583 | ||
29f8404c | 584 | /* Add to macro's hash table. */ |
02ddf156 JB |
585 | if (hash_find (macro->formal_hash, name)) |
586 | as_bad_where (macro->file, | |
587 | macro->line, | |
588 | _("Reserved word `%s' used as parameter in macro `%s'"), | |
589 | name, | |
590 | macro->name); | |
252b5132 RH |
591 | hash_jam (macro->formal_hash, name, formal); |
592 | ||
593 | formal->index = NARG_INDEX; | |
594 | *p = formal; | |
252b5132 RH |
595 | } |
596 | ||
597 | return idx; | |
598 | } | |
599 | ||
f19df8f7 AM |
600 | /* Free the memory allocated to a macro. */ |
601 | ||
602 | static void | |
603 | free_macro (macro_entry *macro) | |
604 | { | |
605 | formal_entry *formal; | |
606 | ||
607 | for (formal = macro->formals; formal; ) | |
608 | { | |
609 | formal_entry *f; | |
610 | ||
611 | f = formal; | |
612 | formal = formal->next; | |
613 | del_formal (f); | |
614 | } | |
615 | hash_die (macro->formal_hash); | |
616 | sb_kill (¯o->sub); | |
617 | free (macro); | |
618 | } | |
619 | ||
252b5132 RH |
620 | /* Define a new macro. Returns NULL on success, otherwise returns an |
621 | error message. If NAMEP is not NULL, *NAMEP is set to the name of | |
622 | the macro which was defined. */ | |
623 | ||
624 | const char * | |
254d758c | 625 | define_macro (int idx, sb *in, sb *label, |
02ddf156 JB |
626 | int (*get_line) (sb *), |
627 | char *file, unsigned int line, | |
628 | const char **namep) | |
252b5132 RH |
629 | { |
630 | macro_entry *macro; | |
631 | sb name; | |
02ddf156 | 632 | const char *error = NULL; |
252b5132 RH |
633 | |
634 | macro = (macro_entry *) xmalloc (sizeof (macro_entry)); | |
635 | sb_new (¯o->sub); | |
636 | sb_new (&name); | |
02ddf156 JB |
637 | macro->file = file; |
638 | macro->line = line; | |
252b5132 RH |
639 | |
640 | macro->formal_count = 0; | |
641 | macro->formals = 0; | |
e6ca91be | 642 | macro->formal_hash = hash_new (); |
252b5132 RH |
643 | |
644 | idx = sb_skip_white (idx, in); | |
645 | if (! buffer_and_nest ("MACRO", "ENDM", ¯o->sub, get_line)) | |
02ddf156 | 646 | error = _("unexpected end of file in macro `%s' definition"); |
252b5132 RH |
647 | if (label != NULL && label->len != 0) |
648 | { | |
649 | sb_add_sb (&name, label); | |
02ddf156 | 650 | macro->name = sb_terminate (&name); |
252b5132 RH |
651 | if (idx < in->len && in->ptr[idx] == '(') |
652 | { | |
29f8404c | 653 | /* It's the label: MACRO (formals,...) sort */ |
252b5132 | 654 | idx = do_formals (macro, idx + 1, in); |
02ddf156 JB |
655 | if (idx < in->len && in->ptr[idx] == ')') |
656 | idx = sb_skip_white (idx + 1, in); | |
657 | else if (!error) | |
658 | error = _("missing `)' after formals in macro definition `%s'"); | |
252b5132 RH |
659 | } |
660 | else | |
661 | { | |
29f8404c | 662 | /* It's the label: MACRO formals,... sort */ |
252b5132 RH |
663 | idx = do_formals (macro, idx, in); |
664 | } | |
665 | } | |
666 | else | |
667 | { | |
057f53c1 JB |
668 | int cidx; |
669 | ||
252b5132 | 670 | idx = get_token (idx, in, &name); |
02ddf156 | 671 | macro->name = sb_terminate (&name); |
057f53c1 | 672 | if (name.len == 0) |
02ddf156 | 673 | error = _("Missing macro name"); |
057f53c1 JB |
674 | cidx = sb_skip_white (idx, in); |
675 | idx = sb_skip_comma (cidx, in); | |
676 | if (idx == cidx || idx < in->len) | |
677 | idx = do_formals (macro, idx, in); | |
678 | else | |
679 | idx = cidx; | |
252b5132 | 680 | } |
02ddf156 JB |
681 | if (!error && idx < in->len) |
682 | error = _("Bad parameter list for macro `%s'"); | |
252b5132 | 683 | |
29f8404c | 684 | /* And stick it in the macro hash table. */ |
252b5132 | 685 | for (idx = 0; idx < name.len; idx++) |
3882b010 | 686 | name.ptr[idx] = TOLOWER (name.ptr[idx]); |
02ddf156 JB |
687 | if (hash_find (macro_hash, macro->name)) |
688 | error = _("Macro `%s' was already defined"); | |
689 | if (!error) | |
5a49b8ac | 690 | error = hash_jam (macro_hash, macro->name, (void *) macro); |
252b5132 RH |
691 | |
692 | if (namep != NULL) | |
02ddf156 JB |
693 | *namep = macro->name; |
694 | ||
695 | if (!error) | |
696 | macro_defined = 1; | |
697 | else | |
698 | free_macro (macro); | |
252b5132 | 699 | |
02ddf156 | 700 | return error; |
252b5132 RH |
701 | } |
702 | ||
703 | /* Scan a token, and then skip KIND. */ | |
704 | ||
705 | static int | |
254d758c | 706 | get_apost_token (int idx, sb *in, sb *name, int kind) |
252b5132 RH |
707 | { |
708 | idx = get_token (idx, in, name); | |
709 | if (idx < in->len | |
710 | && in->ptr[idx] == kind | |
711 | && (! macro_mri || macro_strip_at) | |
712 | && (! macro_strip_at || kind == '@')) | |
713 | idx++; | |
714 | return idx; | |
715 | } | |
716 | ||
717 | /* Substitute the actual value for a formal parameter. */ | |
718 | ||
719 | static int | |
254d758c KH |
720 | sub_actual (int start, sb *in, sb *t, struct hash_control *formal_hash, |
721 | int kind, sb *out, int copyifnotthere) | |
252b5132 RH |
722 | { |
723 | int src; | |
724 | formal_entry *ptr; | |
725 | ||
726 | src = get_apost_token (start, in, t, kind); | |
727 | /* See if it's in the macro's hash table, unless this is | |
728 | macro_strip_at and kind is '@' and the token did not end in '@'. */ | |
729 | if (macro_strip_at | |
730 | && kind == '@' | |
731 | && (src == start || in->ptr[src - 1] != '@')) | |
732 | ptr = NULL; | |
733 | else | |
734 | ptr = (formal_entry *) hash_find (formal_hash, sb_terminate (t)); | |
735 | if (ptr) | |
736 | { | |
737 | if (ptr->actual.len) | |
738 | { | |
739 | sb_add_sb (out, &ptr->actual); | |
740 | } | |
741 | else | |
742 | { | |
743 | sb_add_sb (out, &ptr->def); | |
744 | } | |
745 | } | |
746 | else if (kind == '&') | |
747 | { | |
748 | /* Doing this permits people to use & in macro bodies. */ | |
749 | sb_add_char (out, '&'); | |
c1ed1235 | 750 | sb_add_sb (out, t); |
d1f52f54 AM |
751 | if (src != start && in->ptr[src - 1] == '&') |
752 | sb_add_char (out, '&'); | |
252b5132 RH |
753 | } |
754 | else if (copyifnotthere) | |
755 | { | |
756 | sb_add_sb (out, t); | |
757 | } | |
29f8404c | 758 | else |
252b5132 RH |
759 | { |
760 | sb_add_char (out, '\\'); | |
761 | sb_add_sb (out, t); | |
762 | } | |
763 | return src; | |
764 | } | |
765 | ||
766 | /* Expand the body of a macro. */ | |
767 | ||
768 | static const char * | |
254d758c | 769 | macro_expand_body (sb *in, sb *out, formal_entry *formals, |
02ddf156 | 770 | struct hash_control *formal_hash, const macro_entry *macro) |
252b5132 RH |
771 | { |
772 | sb t; | |
02ddf156 | 773 | int src = 0, inquote = 0, macro_line = 0; |
252b5132 | 774 | formal_entry *loclist = NULL; |
02ddf156 | 775 | const char *err = NULL; |
252b5132 RH |
776 | |
777 | sb_new (&t); | |
778 | ||
02ddf156 | 779 | while (src < in->len && !err) |
252b5132 RH |
780 | { |
781 | if (in->ptr[src] == '&') | |
782 | { | |
783 | sb_reset (&t); | |
784 | if (macro_mri) | |
785 | { | |
786 | if (src + 1 < in->len && in->ptr[src + 1] == '&') | |
787 | src = sub_actual (src + 2, in, &t, formal_hash, '\'', out, 1); | |
788 | else | |
789 | sb_add_char (out, in->ptr[src++]); | |
790 | } | |
791 | else | |
792 | { | |
d1f52f54 AM |
793 | /* Permit macro parameter substition delineated with |
794 | an '&' prefix and optional '&' suffix. */ | |
252b5132 RH |
795 | src = sub_actual (src + 1, in, &t, formal_hash, '&', out, 0); |
796 | } | |
797 | } | |
798 | else if (in->ptr[src] == '\\') | |
799 | { | |
800 | src++; | |
5e75c3ab | 801 | if (src < in->len && in->ptr[src] == '(') |
252b5132 | 802 | { |
29f8404c | 803 | /* Sub in till the next ')' literally. */ |
252b5132 RH |
804 | src++; |
805 | while (src < in->len && in->ptr[src] != ')') | |
806 | { | |
807 | sb_add_char (out, in->ptr[src++]); | |
808 | } | |
02ddf156 | 809 | if (src < in->len) |
252b5132 | 810 | src++; |
02ddf156 JB |
811 | else if (!macro) |
812 | err = _("missing `)'"); | |
252b5132 | 813 | else |
02ddf156 | 814 | as_bad_where (macro->file, macro->line + macro_line, _("missing `)'")); |
252b5132 | 815 | } |
5e75c3ab | 816 | else if (src < in->len && in->ptr[src] == '@') |
252b5132 | 817 | { |
29f8404c | 818 | /* Sub in the macro invocation number. */ |
252b5132 RH |
819 | |
820 | char buffer[10]; | |
821 | src++; | |
a2984248 | 822 | sprintf (buffer, "%d", macro_number); |
252b5132 RH |
823 | sb_add_string (out, buffer); |
824 | } | |
5e75c3ab | 825 | else if (src < in->len && in->ptr[src] == '&') |
252b5132 RH |
826 | { |
827 | /* This is a preprocessor variable name, we don't do them | |
29f8404c | 828 | here. */ |
252b5132 RH |
829 | sb_add_char (out, '\\'); |
830 | sb_add_char (out, '&'); | |
831 | src++; | |
832 | } | |
5e75c3ab | 833 | else if (macro_mri && src < in->len && ISALNUM (in->ptr[src])) |
252b5132 RH |
834 | { |
835 | int ind; | |
836 | formal_entry *f; | |
837 | ||
3882b010 | 838 | if (ISDIGIT (in->ptr[src])) |
252b5132 | 839 | ind = in->ptr[src] - '0'; |
3882b010 | 840 | else if (ISUPPER (in->ptr[src])) |
252b5132 RH |
841 | ind = in->ptr[src] - 'A' + 10; |
842 | else | |
843 | ind = in->ptr[src] - 'a' + 10; | |
844 | ++src; | |
845 | for (f = formals; f != NULL; f = f->next) | |
846 | { | |
847 | if (f->index == ind - 1) | |
848 | { | |
849 | if (f->actual.len != 0) | |
850 | sb_add_sb (out, &f->actual); | |
851 | else | |
852 | sb_add_sb (out, &f->def); | |
853 | break; | |
854 | } | |
855 | } | |
856 | } | |
857 | else | |
858 | { | |
859 | sb_reset (&t); | |
860 | src = sub_actual (src, in, &t, formal_hash, '\'', out, 0); | |
861 | } | |
862 | } | |
863 | else if ((macro_alternate || macro_mri) | |
5e75c3ab | 864 | && is_name_beginner (in->ptr[src]) |
252b5132 RH |
865 | && (! inquote |
866 | || ! macro_strip_at | |
867 | || (src > 0 && in->ptr[src - 1] == '@'))) | |
868 | { | |
02ddf156 | 869 | if (! macro |
252b5132 RH |
870 | || src + 5 >= in->len |
871 | || strncasecmp (in->ptr + src, "LOCAL", 5) != 0 | |
aa27de95 NC |
872 | || ! ISWHITE (in->ptr[src + 5]) |
873 | /* PR 11507: Skip keyword LOCAL if it is found inside a quoted string. */ | |
874 | || inquote) | |
252b5132 RH |
875 | { |
876 | sb_reset (&t); | |
877 | src = sub_actual (src, in, &t, formal_hash, | |
878 | (macro_strip_at && inquote) ? '@' : '\'', | |
879 | out, 1); | |
880 | } | |
881 | else | |
882 | { | |
252b5132 | 883 | src = sb_skip_white (src + 5, in); |
fea17916 | 884 | while (in->ptr[src] != '\n') |
252b5132 | 885 | { |
02ddf156 | 886 | const char *name; |
6eaeac8a | 887 | formal_entry *f = new_formal (); |
252b5132 | 888 | |
252b5132 | 889 | src = get_token (src, in, &f->name); |
02ddf156 JB |
890 | name = sb_terminate (&f->name); |
891 | if (! hash_find (formal_hash, name)) | |
892 | { | |
893 | static int loccnt; | |
894 | char buf[20]; | |
252b5132 | 895 | |
02ddf156 JB |
896 | f->index = LOCAL_INDEX; |
897 | f->next = loclist; | |
898 | loclist = f; | |
899 | ||
900 | sprintf (buf, IS_ELF ? ".LL%04x" : "LL%04x", ++loccnt); | |
901 | sb_add_string (&f->actual, buf); | |
902 | ||
903 | err = hash_jam (formal_hash, name, f); | |
904 | if (err != NULL) | |
905 | break; | |
906 | } | |
907 | else | |
908 | { | |
909 | as_bad_where (macro->file, | |
910 | macro->line + macro_line, | |
911 | _("`%s' was already used as parameter (or another local) name"), | |
912 | name); | |
6eaeac8a | 913 | del_formal (f); |
02ddf156 | 914 | } |
252b5132 RH |
915 | |
916 | src = sb_skip_comma (src, in); | |
917 | } | |
918 | } | |
919 | } | |
252b5132 RH |
920 | else if (in->ptr[src] == '"' |
921 | || (macro_mri && in->ptr[src] == '\'')) | |
922 | { | |
923 | inquote = !inquote; | |
924 | sb_add_char (out, in->ptr[src++]); | |
925 | } | |
926 | else if (in->ptr[src] == '@' && macro_strip_at) | |
927 | { | |
928 | ++src; | |
929 | if (src < in->len | |
930 | && in->ptr[src] == '@') | |
931 | { | |
932 | sb_add_char (out, '@'); | |
933 | ++src; | |
934 | } | |
935 | } | |
936 | else if (macro_mri | |
937 | && in->ptr[src] == '=' | |
938 | && src + 1 < in->len | |
939 | && in->ptr[src + 1] == '=') | |
940 | { | |
941 | formal_entry *ptr; | |
942 | ||
943 | sb_reset (&t); | |
944 | src = get_token (src + 2, in, &t); | |
945 | ptr = (formal_entry *) hash_find (formal_hash, sb_terminate (&t)); | |
946 | if (ptr == NULL) | |
947 | { | |
948 | /* FIXME: We should really return a warning string here, | |
949 | but we can't, because the == might be in the MRI | |
950 | comment field, and, since the nature of the MRI | |
951 | comment field depends upon the exact instruction | |
952 | being used, we don't have enough information here to | |
953 | figure out whether it is or not. Instead, we leave | |
954 | the == in place, which should cause a syntax error if | |
955 | it is not in a comment. */ | |
956 | sb_add_char (out, '='); | |
957 | sb_add_char (out, '='); | |
958 | sb_add_sb (out, &t); | |
959 | } | |
960 | else | |
961 | { | |
962 | if (ptr->actual.len) | |
963 | { | |
964 | sb_add_string (out, "-1"); | |
965 | } | |
966 | else | |
967 | { | |
968 | sb_add_char (out, '0'); | |
969 | } | |
970 | } | |
971 | } | |
972 | else | |
973 | { | |
02ddf156 JB |
974 | if (in->ptr[src] == '\n') |
975 | ++macro_line; | |
252b5132 RH |
976 | sb_add_char (out, in->ptr[src++]); |
977 | } | |
978 | } | |
979 | ||
980 | sb_kill (&t); | |
981 | ||
982 | while (loclist != NULL) | |
983 | { | |
984 | formal_entry *f; | |
818236e5 | 985 | const char *name; |
252b5132 RH |
986 | |
987 | f = loclist->next; | |
818236e5 AM |
988 | name = sb_terminate (&loclist->name); |
989 | hash_delete (formal_hash, name, f == NULL); | |
6eaeac8a | 990 | del_formal (loclist); |
252b5132 RH |
991 | loclist = f; |
992 | } | |
993 | ||
02ddf156 | 994 | return err; |
252b5132 RH |
995 | } |
996 | ||
997 | /* Assign values to the formal parameters of a macro, and expand the | |
998 | body. */ | |
999 | ||
1000 | static const char * | |
254d758c | 1001 | macro_expand (int idx, sb *in, macro_entry *m, sb *out) |
252b5132 RH |
1002 | { |
1003 | sb t; | |
1004 | formal_entry *ptr; | |
1005 | formal_entry *f; | |
252b5132 RH |
1006 | int is_keyword = 0; |
1007 | int narg = 0; | |
6eaeac8a | 1008 | const char *err = NULL; |
252b5132 RH |
1009 | |
1010 | sb_new (&t); | |
29f8404c KH |
1011 | |
1012 | /* Reset any old value the actuals may have. */ | |
252b5132 | 1013 | for (f = m->formals; f; f = f->next) |
29f8404c | 1014 | sb_reset (&f->actual); |
252b5132 RH |
1015 | f = m->formals; |
1016 | while (f != NULL && f->index < 0) | |
1017 | f = f->next; | |
1018 | ||
1019 | if (macro_mri) | |
1020 | { | |
1021 | /* The macro may be called with an optional qualifier, which may | |
1022 | be referred to in the macro body as \0. */ | |
1023 | if (idx < in->len && in->ptr[idx] == '.') | |
d1a6c242 KH |
1024 | { |
1025 | /* The Microtec assembler ignores this if followed by a white space. | |
1026 | (Macro invocation with empty extension) */ | |
1027 | idx++; | |
1028 | if ( idx < in->len | |
1029 | && in->ptr[idx] != ' ' | |
1030 | && in->ptr[idx] != '\t') | |
1031 | { | |
6eaeac8a | 1032 | formal_entry *n = new_formal (); |
d1a6c242 | 1033 | |
d1a6c242 KH |
1034 | n->index = QUAL_INDEX; |
1035 | ||
1036 | n->next = m->formals; | |
1037 | m->formals = n; | |
1038 | ||
be03cc84 | 1039 | idx = get_any_string (idx, in, &n->actual); |
d1a6c242 KH |
1040 | } |
1041 | } | |
1042 | } | |
252b5132 | 1043 | |
29f8404c | 1044 | /* Peel off the actuals and store them away in the hash tables' actuals. */ |
252b5132 | 1045 | idx = sb_skip_white (idx, in); |
fea17916 | 1046 | while (idx < in->len) |
252b5132 RH |
1047 | { |
1048 | int scan; | |
1049 | ||
29f8404c | 1050 | /* Look and see if it's a positional or keyword arg. */ |
252b5132 RH |
1051 | scan = idx; |
1052 | while (scan < in->len | |
1053 | && !ISSEP (in->ptr[scan]) | |
1054 | && !(macro_mri && in->ptr[scan] == '\'') | |
1055 | && (!macro_alternate && in->ptr[scan] != '=')) | |
1056 | scan++; | |
1057 | if (scan < in->len && !macro_alternate && in->ptr[scan] == '=') | |
1058 | { | |
1059 | is_keyword = 1; | |
1060 | ||
1061 | /* It's OK to go from positional to keyword. */ | |
1062 | ||
1063 | /* This is a keyword arg, fetch the formal name and | |
29f8404c | 1064 | then the actual stuff. */ |
252b5132 RH |
1065 | sb_reset (&t); |
1066 | idx = get_token (idx, in, &t); | |
1067 | if (in->ptr[idx] != '=') | |
6eaeac8a JB |
1068 | { |
1069 | err = _("confusion in formal parameters"); | |
1070 | break; | |
1071 | } | |
252b5132 | 1072 | |
29f8404c | 1073 | /* Lookup the formal in the macro's list. */ |
252b5132 RH |
1074 | ptr = (formal_entry *) hash_find (m->formal_hash, sb_terminate (&t)); |
1075 | if (!ptr) | |
c0ba1095 AM |
1076 | { |
1077 | as_bad (_("Parameter named `%s' does not exist for macro `%s'"), | |
1078 | t.ptr, | |
1079 | m->name); | |
1080 | sb_reset (&t); | |
1081 | idx = get_any_string (idx + 1, in, &t); | |
1082 | } | |
252b5132 RH |
1083 | else |
1084 | { | |
29f8404c | 1085 | /* Insert this value into the right place. */ |
6eaeac8a JB |
1086 | if (ptr->actual.len) |
1087 | { | |
1088 | as_warn (_("Value for parameter `%s' of macro `%s' was already specified"), | |
1089 | ptr->name.ptr, | |
1090 | m->name); | |
1091 | sb_reset (&ptr->actual); | |
1092 | } | |
be03cc84 | 1093 | idx = get_any_string (idx + 1, in, &ptr->actual); |
252b5132 RH |
1094 | if (ptr->actual.len > 0) |
1095 | ++narg; | |
1096 | } | |
1097 | } | |
1098 | else | |
1099 | { | |
252b5132 | 1100 | if (is_keyword) |
6eaeac8a JB |
1101 | { |
1102 | err = _("can't mix positional and keyword arguments"); | |
1103 | break; | |
1104 | } | |
252b5132 RH |
1105 | |
1106 | if (!f) | |
1107 | { | |
1108 | formal_entry **pf; | |
1109 | int c; | |
1110 | ||
1111 | if (!macro_mri) | |
6eaeac8a JB |
1112 | { |
1113 | err = _("too many positional arguments"); | |
1114 | break; | |
1115 | } | |
252b5132 | 1116 | |
6eaeac8a | 1117 | f = new_formal (); |
252b5132 RH |
1118 | |
1119 | c = -1; | |
1120 | for (pf = &m->formals; *pf != NULL; pf = &(*pf)->next) | |
1121 | if ((*pf)->index >= c) | |
1122 | c = (*pf)->index + 1; | |
1123 | if (c == -1) | |
1124 | c = 0; | |
1125 | *pf = f; | |
1126 | f->index = c; | |
1127 | } | |
1128 | ||
6eaeac8a | 1129 | if (f->type != FORMAL_VARARG) |
be03cc84 | 1130 | idx = get_any_string (idx, in, &f->actual); |
6eaeac8a JB |
1131 | else |
1132 | { | |
1133 | sb_add_buffer (&f->actual, in->ptr + idx, in->len - idx); | |
1134 | idx = in->len; | |
1135 | } | |
252b5132 RH |
1136 | if (f->actual.len > 0) |
1137 | ++narg; | |
1138 | do | |
1139 | { | |
1140 | f = f->next; | |
1141 | } | |
1142 | while (f != NULL && f->index < 0); | |
1143 | } | |
1144 | ||
1145 | if (! macro_mri) | |
1146 | idx = sb_skip_comma (idx, in); | |
1147 | else | |
1148 | { | |
1149 | if (in->ptr[idx] == ',') | |
1150 | ++idx; | |
1151 | if (ISWHITE (in->ptr[idx])) | |
1152 | break; | |
1153 | } | |
1154 | } | |
1155 | ||
6eaeac8a | 1156 | if (! err) |
252b5132 | 1157 | { |
6eaeac8a JB |
1158 | for (ptr = m->formals; ptr; ptr = ptr->next) |
1159 | { | |
1160 | if (ptr->type == FORMAL_REQUIRED && ptr->actual.len == 0) | |
1161 | as_bad (_("Missing value for required parameter `%s' of macro `%s'"), | |
1162 | ptr->name.ptr, | |
1163 | m->name); | |
1164 | } | |
252b5132 | 1165 | |
6eaeac8a JB |
1166 | if (macro_mri) |
1167 | { | |
1168 | char buffer[20]; | |
1169 | ||
1170 | sb_reset (&t); | |
1171 | sb_add_string (&t, macro_strip_at ? "$NARG" : "NARG"); | |
1172 | ptr = (formal_entry *) hash_find (m->formal_hash, sb_terminate (&t)); | |
1173 | sprintf (buffer, "%d", narg); | |
1174 | sb_add_string (&ptr->actual, buffer); | |
1175 | } | |
1176 | ||
1177 | err = macro_expand_body (&m->sub, out, m->formals, m->formal_hash, m); | |
1178 | } | |
252b5132 RH |
1179 | |
1180 | /* Discard any unnamed formal arguments. */ | |
1181 | if (macro_mri) | |
1182 | { | |
1183 | formal_entry **pf; | |
1184 | ||
1185 | pf = &m->formals; | |
1186 | while (*pf != NULL) | |
1187 | { | |
1188 | if ((*pf)->name.len != 0) | |
1189 | pf = &(*pf)->next; | |
1190 | else | |
1191 | { | |
252b5132 | 1192 | f = (*pf)->next; |
6eaeac8a | 1193 | del_formal (*pf); |
252b5132 RH |
1194 | *pf = f; |
1195 | } | |
1196 | } | |
1197 | } | |
1198 | ||
1199 | sb_kill (&t); | |
02ddf156 JB |
1200 | if (!err) |
1201 | macro_number++; | |
252b5132 | 1202 | |
02ddf156 | 1203 | return err; |
252b5132 RH |
1204 | } |
1205 | ||
1206 | /* Check for a macro. If one is found, put the expansion into | |
fea17916 | 1207 | *EXPAND. Return 1 if a macro is found, 0 otherwise. */ |
252b5132 RH |
1208 | |
1209 | int | |
254d758c KH |
1210 | check_macro (const char *line, sb *expand, |
1211 | const char **error, macro_entry **info) | |
252b5132 RH |
1212 | { |
1213 | const char *s; | |
91d6fa6a | 1214 | char *copy, *cls; |
252b5132 RH |
1215 | macro_entry *macro; |
1216 | sb line_sb; | |
1217 | ||
5e75c3ab | 1218 | if (! is_name_beginner (*line) |
252b5132 RH |
1219 | && (! macro_mri || *line != '.')) |
1220 | return 0; | |
1221 | ||
1222 | s = line + 1; | |
5e75c3ab JB |
1223 | while (is_part_of_name (*s)) |
1224 | ++s; | |
1225 | if (is_name_ender (*s)) | |
252b5132 RH |
1226 | ++s; |
1227 | ||
1228 | copy = (char *) alloca (s - line + 1); | |
1229 | memcpy (copy, line, s - line); | |
1230 | copy[s - line] = '\0'; | |
91d6fa6a NC |
1231 | for (cls = copy; *cls != '\0'; cls ++) |
1232 | *cls = TOLOWER (*cls); | |
252b5132 RH |
1233 | |
1234 | macro = (macro_entry *) hash_find (macro_hash, copy); | |
1235 | ||
1236 | if (macro == NULL) | |
1237 | return 0; | |
1238 | ||
1239 | /* Wrap the line up in an sb. */ | |
1240 | sb_new (&line_sb); | |
1241 | while (*s != '\0' && *s != '\n' && *s != '\r') | |
1242 | sb_add_char (&line_sb, *s++); | |
1243 | ||
1244 | sb_new (expand); | |
fea17916 | 1245 | *error = macro_expand (0, &line_sb, macro, expand); |
252b5132 RH |
1246 | |
1247 | sb_kill (&line_sb); | |
1248 | ||
29f8404c | 1249 | /* Export the macro information if requested. */ |
9f10757c TW |
1250 | if (info) |
1251 | *info = macro; | |
1252 | ||
252b5132 RH |
1253 | return 1; |
1254 | } | |
1255 | ||
1256 | /* Delete a macro. */ | |
1257 | ||
1258 | void | |
254d758c | 1259 | delete_macro (const char *name) |
252b5132 | 1260 | { |
e6ca91be JB |
1261 | char *copy; |
1262 | size_t i, len; | |
1263 | macro_entry *macro; | |
1264 | ||
1265 | len = strlen (name); | |
1266 | copy = (char *) alloca (len + 1); | |
1267 | for (i = 0; i < len; ++i) | |
1268 | copy[i] = TOLOWER (name[i]); | |
1269 | copy[i] = '\0'; | |
1270 | ||
818236e5 AM |
1271 | /* We can only ask hash_delete to free memory if we are deleting |
1272 | macros in reverse order to their definition. | |
1273 | So just clear out the entry. */ | |
1e9cc1c2 | 1274 | if ((macro = (macro_entry *) hash_find (macro_hash, copy)) != NULL) |
e6ca91be JB |
1275 | { |
1276 | hash_jam (macro_hash, copy, NULL); | |
1277 | free_macro (macro); | |
1278 | } | |
1279 | else | |
1280 | as_warn (_("Attempt to purge non-existant macro `%s'"), copy); | |
252b5132 RH |
1281 | } |
1282 | ||
1283 | /* Handle the MRI IRP and IRPC pseudo-ops. These are handled as a | |
1284 | combined macro definition and execution. This returns NULL on | |
1285 | success, or an error message otherwise. */ | |
1286 | ||
1287 | const char * | |
254d758c | 1288 | expand_irp (int irpc, int idx, sb *in, sb *out, int (*get_line) (sb *)) |
252b5132 | 1289 | { |
252b5132 RH |
1290 | sb sub; |
1291 | formal_entry f; | |
1292 | struct hash_control *h; | |
1293 | const char *err; | |
1294 | ||
252b5132 RH |
1295 | idx = sb_skip_white (idx, in); |
1296 | ||
1297 | sb_new (&sub); | |
ca3bc58f | 1298 | if (! buffer_and_nest (NULL, "ENDR", &sub, get_line)) |
252b5132 | 1299 | return _("unexpected end of file in irp or irpc"); |
29f8404c | 1300 | |
252b5132 RH |
1301 | sb_new (&f.name); |
1302 | sb_new (&f.def); | |
1303 | sb_new (&f.actual); | |
1304 | ||
1305 | idx = get_token (idx, in, &f.name); | |
1306 | if (f.name.len == 0) | |
1307 | return _("missing model parameter"); | |
1308 | ||
1309 | h = hash_new (); | |
1310 | err = hash_jam (h, sb_terminate (&f.name), &f); | |
1311 | if (err != NULL) | |
1312 | return err; | |
1313 | ||
1314 | f.index = 1; | |
1315 | f.next = NULL; | |
6eaeac8a | 1316 | f.type = FORMAL_OPTIONAL; |
252b5132 RH |
1317 | |
1318 | sb_reset (out); | |
1319 | ||
1320 | idx = sb_skip_comma (idx, in); | |
fea17916 | 1321 | if (idx >= in->len) |
252b5132 RH |
1322 | { |
1323 | /* Expand once with a null string. */ | |
fea17916 | 1324 | err = macro_expand_body (&sub, out, &f, h, 0); |
252b5132 RH |
1325 | } |
1326 | else | |
1327 | { | |
465e5617 NC |
1328 | bfd_boolean in_quotes = FALSE; |
1329 | ||
252b5132 | 1330 | if (irpc && in->ptr[idx] == '"') |
465e5617 NC |
1331 | { |
1332 | in_quotes = TRUE; | |
1333 | ++idx; | |
1334 | } | |
1335 | ||
fea17916 | 1336 | while (idx < in->len) |
252b5132 RH |
1337 | { |
1338 | if (!irpc) | |
be03cc84 | 1339 | idx = get_any_string (idx, in, &f.actual); |
252b5132 RH |
1340 | else |
1341 | { | |
1342 | if (in->ptr[idx] == '"') | |
1343 | { | |
1344 | int nxt; | |
1345 | ||
465e5617 NC |
1346 | if (irpc) |
1347 | in_quotes = ! in_quotes; | |
1348 | ||
252b5132 | 1349 | nxt = sb_skip_white (idx + 1, in); |
fea17916 | 1350 | if (nxt >= in->len) |
252b5132 RH |
1351 | { |
1352 | idx = nxt; | |
1353 | break; | |
1354 | } | |
1355 | } | |
1356 | sb_reset (&f.actual); | |
1357 | sb_add_char (&f.actual, in->ptr[idx]); | |
1358 | ++idx; | |
1359 | } | |
465e5617 | 1360 | |
fea17916 | 1361 | err = macro_expand_body (&sub, out, &f, h, 0); |
252b5132 | 1362 | if (err != NULL) |
02ddf156 | 1363 | break; |
252b5132 RH |
1364 | if (!irpc) |
1365 | idx = sb_skip_comma (idx, in); | |
465e5617 | 1366 | else if (! in_quotes) |
252b5132 RH |
1367 | idx = sb_skip_white (idx, in); |
1368 | } | |
1369 | } | |
1370 | ||
1371 | hash_die (h); | |
6eaeac8a JB |
1372 | sb_kill (&f.actual); |
1373 | sb_kill (&f.def); | |
1374 | sb_kill (&f.name); | |
252b5132 RH |
1375 | sb_kill (&sub); |
1376 | ||
02ddf156 | 1377 | return err; |
252b5132 | 1378 | } |