Commit | Line | Data |
---|---|---|
fea17916 | 1 | /* macro.c - macro support for gas |
2da5c037 | 2 | Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
4ac14836 | 3 | 2004, 2005, 2006, 2007, 2008, 2011 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 | ||
4ac14836 | 122 | if (to_len == 4 && strcasecmp (to, "ENDR") == 0) |
ca3bc58f JB |
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 | { |
4ac14836 | 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) |
4ac14836 NC |
410 | { |
411 | free (br_buf); | |
412 | return idx; | |
413 | } | |
0e31b3e1 JB |
414 | break; |
415 | case '(': | |
416 | case '[': | |
417 | if (in_br > br_buf) | |
418 | --in_br; | |
419 | else | |
420 | { | |
4ac14836 NC |
421 | br_buf = (char *) xmalloc (strlen (in_br) + 2); |
422 | strcpy (br_buf + 1, in_br); | |
423 | free (in_br); | |
0e31b3e1 JB |
424 | in_br = br_buf; |
425 | } | |
426 | *in_br = tchar; | |
427 | break; | |
428 | case ')': | |
429 | if (*in_br == '(') | |
430 | ++in_br; | |
431 | break; | |
432 | case ']': | |
433 | if (*in_br == '[') | |
434 | ++in_br; | |
435 | break; | |
252b5132 | 436 | } |
0e31b3e1 JB |
437 | sb_add_char (out, tchar); |
438 | ++idx; | |
252b5132 | 439 | } |
4ac14836 | 440 | free (br_buf); |
252b5132 RH |
441 | } |
442 | } | |
443 | ||
444 | return idx; | |
445 | } | |
446 | ||
6eaeac8a JB |
447 | /* Allocate a new formal. */ |
448 | ||
449 | static formal_entry * | |
450 | new_formal (void) | |
451 | { | |
452 | formal_entry *formal; | |
453 | ||
1e9cc1c2 | 454 | formal = (formal_entry *) xmalloc (sizeof (formal_entry)); |
6eaeac8a JB |
455 | |
456 | sb_new (&formal->name); | |
457 | sb_new (&formal->def); | |
458 | sb_new (&formal->actual); | |
459 | formal->next = NULL; | |
460 | formal->type = FORMAL_OPTIONAL; | |
461 | return formal; | |
462 | } | |
463 | ||
464 | /* Free a formal. */ | |
465 | ||
466 | static void | |
467 | del_formal (formal_entry *formal) | |
468 | { | |
469 | sb_kill (&formal->actual); | |
470 | sb_kill (&formal->def); | |
471 | sb_kill (&formal->name); | |
472 | free (formal); | |
473 | } | |
474 | ||
252b5132 RH |
475 | /* Pick up the formal parameters of a macro definition. */ |
476 | ||
477 | static int | |
254d758c | 478 | do_formals (macro_entry *macro, int idx, sb *in) |
252b5132 RH |
479 | { |
480 | formal_entry **p = ¯o->formals; | |
02ddf156 | 481 | const char *name; |
252b5132 | 482 | |
057f53c1 | 483 | idx = sb_skip_white (idx, in); |
252b5132 RH |
484 | while (idx < in->len) |
485 | { | |
6eaeac8a | 486 | formal_entry *formal = new_formal (); |
057f53c1 | 487 | int cidx; |
252b5132 | 488 | |
252b5132 RH |
489 | idx = get_token (idx, in, &formal->name); |
490 | if (formal->name.len == 0) | |
057f53c1 JB |
491 | { |
492 | if (macro->formal_count) | |
493 | --idx; | |
4ac14836 | 494 | del_formal (formal); /* 'formal' goes out of scope. */ |
057f53c1 JB |
495 | break; |
496 | } | |
252b5132 | 497 | idx = sb_skip_white (idx, in); |
057f53c1 | 498 | /* This is a formal. */ |
6eaeac8a JB |
499 | name = sb_terminate (&formal->name); |
500 | if (! macro_mri | |
501 | && idx < in->len | |
502 | && in->ptr[idx] == ':' | |
503 | && (! is_name_beginner (':') | |
504 | || idx + 1 >= in->len | |
505 | || ! is_part_of_name (in->ptr[idx + 1]))) | |
506 | { | |
507 | /* Got a qualifier. */ | |
508 | sb qual; | |
509 | ||
510 | sb_new (&qual); | |
511 | idx = get_token (sb_skip_white (idx + 1, in), in, &qual); | |
512 | sb_terminate (&qual); | |
513 | if (qual.len == 0) | |
514 | as_bad_where (macro->file, | |
515 | macro->line, | |
516 | _("Missing parameter qualifier for `%s' in macro `%s'"), | |
517 | name, | |
518 | macro->name); | |
519 | else if (strcmp (qual.ptr, "req") == 0) | |
520 | formal->type = FORMAL_REQUIRED; | |
521 | else if (strcmp (qual.ptr, "vararg") == 0) | |
522 | formal->type = FORMAL_VARARG; | |
523 | else | |
524 | as_bad_where (macro->file, | |
525 | macro->line, | |
526 | _("`%s' is not a valid parameter qualifier for `%s' in macro `%s'"), | |
527 | qual.ptr, | |
528 | name, | |
529 | macro->name); | |
530 | sb_kill (&qual); | |
531 | idx = sb_skip_white (idx, in); | |
532 | } | |
057f53c1 | 533 | if (idx < in->len && in->ptr[idx] == '=') |
252b5132 | 534 | { |
057f53c1 | 535 | /* Got a default. */ |
be03cc84 | 536 | idx = get_any_string (idx + 1, in, &formal->def); |
057f53c1 | 537 | idx = sb_skip_white (idx, in); |
6eaeac8a JB |
538 | if (formal->type == FORMAL_REQUIRED) |
539 | { | |
540 | sb_reset (&formal->def); | |
541 | as_warn_where (macro->file, | |
542 | macro->line, | |
543 | _("Pointless default value for required parameter `%s' in macro `%s'"), | |
544 | name, | |
545 | macro->name); | |
546 | } | |
252b5132 RH |
547 | } |
548 | ||
29f8404c | 549 | /* Add to macro's hash table. */ |
02ddf156 JB |
550 | if (! hash_find (macro->formal_hash, name)) |
551 | hash_jam (macro->formal_hash, name, formal); | |
552 | else | |
553 | as_bad_where (macro->file, | |
554 | macro->line, | |
555 | _("A parameter named `%s' already exists for macro `%s'"), | |
556 | name, | |
557 | macro->name); | |
252b5132 | 558 | |
057f53c1 | 559 | formal->index = macro->formal_count++; |
6eaeac8a JB |
560 | *p = formal; |
561 | p = &formal->next; | |
562 | if (formal->type == FORMAL_VARARG) | |
563 | break; | |
057f53c1 | 564 | cidx = idx; |
252b5132 | 565 | idx = sb_skip_comma (idx, in); |
057f53c1 JB |
566 | if (idx != cidx && idx >= in->len) |
567 | { | |
568 | idx = cidx; | |
569 | break; | |
570 | } | |
252b5132 RH |
571 | } |
572 | ||
573 | if (macro_mri) | |
574 | { | |
6eaeac8a | 575 | formal_entry *formal = new_formal (); |
252b5132 RH |
576 | |
577 | /* Add a special NARG formal, which macro_expand will set to the | |
578 | number of arguments. */ | |
252b5132 RH |
579 | /* The same MRI assemblers which treat '@' characters also use |
580 | the name $NARG. At least until we find an exception. */ | |
581 | if (macro_strip_at) | |
582 | name = "$NARG"; | |
583 | else | |
584 | name = "NARG"; | |
585 | ||
586 | sb_add_string (&formal->name, name); | |
587 | ||
29f8404c | 588 | /* Add to macro's hash table. */ |
02ddf156 JB |
589 | if (hash_find (macro->formal_hash, name)) |
590 | as_bad_where (macro->file, | |
591 | macro->line, | |
592 | _("Reserved word `%s' used as parameter in macro `%s'"), | |
593 | name, | |
594 | macro->name); | |
252b5132 RH |
595 | hash_jam (macro->formal_hash, name, formal); |
596 | ||
597 | formal->index = NARG_INDEX; | |
598 | *p = formal; | |
252b5132 RH |
599 | } |
600 | ||
601 | return idx; | |
602 | } | |
603 | ||
f19df8f7 AM |
604 | /* Free the memory allocated to a macro. */ |
605 | ||
606 | static void | |
607 | free_macro (macro_entry *macro) | |
608 | { | |
609 | formal_entry *formal; | |
610 | ||
611 | for (formal = macro->formals; formal; ) | |
612 | { | |
613 | formal_entry *f; | |
614 | ||
615 | f = formal; | |
616 | formal = formal->next; | |
617 | del_formal (f); | |
618 | } | |
619 | hash_die (macro->formal_hash); | |
620 | sb_kill (¯o->sub); | |
621 | free (macro); | |
622 | } | |
623 | ||
252b5132 RH |
624 | /* Define a new macro. Returns NULL on success, otherwise returns an |
625 | error message. If NAMEP is not NULL, *NAMEP is set to the name of | |
626 | the macro which was defined. */ | |
627 | ||
628 | const char * | |
254d758c | 629 | define_macro (int idx, sb *in, sb *label, |
02ddf156 JB |
630 | int (*get_line) (sb *), |
631 | char *file, unsigned int line, | |
632 | const char **namep) | |
252b5132 RH |
633 | { |
634 | macro_entry *macro; | |
635 | sb name; | |
02ddf156 | 636 | const char *error = NULL; |
252b5132 RH |
637 | |
638 | macro = (macro_entry *) xmalloc (sizeof (macro_entry)); | |
639 | sb_new (¯o->sub); | |
640 | sb_new (&name); | |
02ddf156 JB |
641 | macro->file = file; |
642 | macro->line = line; | |
252b5132 RH |
643 | |
644 | macro->formal_count = 0; | |
645 | macro->formals = 0; | |
e6ca91be | 646 | macro->formal_hash = hash_new (); |
252b5132 RH |
647 | |
648 | idx = sb_skip_white (idx, in); | |
649 | if (! buffer_and_nest ("MACRO", "ENDM", ¯o->sub, get_line)) | |
02ddf156 | 650 | error = _("unexpected end of file in macro `%s' definition"); |
252b5132 RH |
651 | if (label != NULL && label->len != 0) |
652 | { | |
653 | sb_add_sb (&name, label); | |
02ddf156 | 654 | macro->name = sb_terminate (&name); |
252b5132 RH |
655 | if (idx < in->len && in->ptr[idx] == '(') |
656 | { | |
29f8404c | 657 | /* It's the label: MACRO (formals,...) sort */ |
252b5132 | 658 | idx = do_formals (macro, idx + 1, in); |
02ddf156 JB |
659 | if (idx < in->len && in->ptr[idx] == ')') |
660 | idx = sb_skip_white (idx + 1, in); | |
661 | else if (!error) | |
662 | error = _("missing `)' after formals in macro definition `%s'"); | |
252b5132 RH |
663 | } |
664 | else | |
665 | { | |
29f8404c | 666 | /* It's the label: MACRO formals,... sort */ |
252b5132 RH |
667 | idx = do_formals (macro, idx, in); |
668 | } | |
669 | } | |
670 | else | |
671 | { | |
057f53c1 JB |
672 | int cidx; |
673 | ||
252b5132 | 674 | idx = get_token (idx, in, &name); |
02ddf156 | 675 | macro->name = sb_terminate (&name); |
057f53c1 | 676 | if (name.len == 0) |
02ddf156 | 677 | error = _("Missing macro name"); |
057f53c1 JB |
678 | cidx = sb_skip_white (idx, in); |
679 | idx = sb_skip_comma (cidx, in); | |
680 | if (idx == cidx || idx < in->len) | |
681 | idx = do_formals (macro, idx, in); | |
682 | else | |
683 | idx = cidx; | |
252b5132 | 684 | } |
02ddf156 JB |
685 | if (!error && idx < in->len) |
686 | error = _("Bad parameter list for macro `%s'"); | |
252b5132 | 687 | |
29f8404c | 688 | /* And stick it in the macro hash table. */ |
252b5132 | 689 | for (idx = 0; idx < name.len; idx++) |
3882b010 | 690 | name.ptr[idx] = TOLOWER (name.ptr[idx]); |
02ddf156 JB |
691 | if (hash_find (macro_hash, macro->name)) |
692 | error = _("Macro `%s' was already defined"); | |
693 | if (!error) | |
5a49b8ac | 694 | error = hash_jam (macro_hash, macro->name, (void *) macro); |
252b5132 RH |
695 | |
696 | if (namep != NULL) | |
02ddf156 JB |
697 | *namep = macro->name; |
698 | ||
699 | if (!error) | |
700 | macro_defined = 1; | |
701 | else | |
702 | free_macro (macro); | |
252b5132 | 703 | |
02ddf156 | 704 | return error; |
252b5132 RH |
705 | } |
706 | ||
707 | /* Scan a token, and then skip KIND. */ | |
708 | ||
709 | static int | |
254d758c | 710 | get_apost_token (int idx, sb *in, sb *name, int kind) |
252b5132 RH |
711 | { |
712 | idx = get_token (idx, in, name); | |
713 | if (idx < in->len | |
714 | && in->ptr[idx] == kind | |
715 | && (! macro_mri || macro_strip_at) | |
716 | && (! macro_strip_at || kind == '@')) | |
717 | idx++; | |
718 | return idx; | |
719 | } | |
720 | ||
721 | /* Substitute the actual value for a formal parameter. */ | |
722 | ||
723 | static int | |
254d758c KH |
724 | sub_actual (int start, sb *in, sb *t, struct hash_control *formal_hash, |
725 | int kind, sb *out, int copyifnotthere) | |
252b5132 RH |
726 | { |
727 | int src; | |
728 | formal_entry *ptr; | |
729 | ||
730 | src = get_apost_token (start, in, t, kind); | |
731 | /* See if it's in the macro's hash table, unless this is | |
732 | macro_strip_at and kind is '@' and the token did not end in '@'. */ | |
733 | if (macro_strip_at | |
734 | && kind == '@' | |
735 | && (src == start || in->ptr[src - 1] != '@')) | |
736 | ptr = NULL; | |
737 | else | |
738 | ptr = (formal_entry *) hash_find (formal_hash, sb_terminate (t)); | |
739 | if (ptr) | |
740 | { | |
741 | if (ptr->actual.len) | |
742 | { | |
743 | sb_add_sb (out, &ptr->actual); | |
744 | } | |
745 | else | |
746 | { | |
747 | sb_add_sb (out, &ptr->def); | |
748 | } | |
749 | } | |
750 | else if (kind == '&') | |
751 | { | |
752 | /* Doing this permits people to use & in macro bodies. */ | |
753 | sb_add_char (out, '&'); | |
c1ed1235 | 754 | sb_add_sb (out, t); |
d1f52f54 AM |
755 | if (src != start && in->ptr[src - 1] == '&') |
756 | sb_add_char (out, '&'); | |
252b5132 RH |
757 | } |
758 | else if (copyifnotthere) | |
759 | { | |
760 | sb_add_sb (out, t); | |
761 | } | |
29f8404c | 762 | else |
252b5132 RH |
763 | { |
764 | sb_add_char (out, '\\'); | |
765 | sb_add_sb (out, t); | |
766 | } | |
767 | return src; | |
768 | } | |
769 | ||
770 | /* Expand the body of a macro. */ | |
771 | ||
772 | static const char * | |
254d758c | 773 | macro_expand_body (sb *in, sb *out, formal_entry *formals, |
02ddf156 | 774 | struct hash_control *formal_hash, const macro_entry *macro) |
252b5132 RH |
775 | { |
776 | sb t; | |
02ddf156 | 777 | int src = 0, inquote = 0, macro_line = 0; |
252b5132 | 778 | formal_entry *loclist = NULL; |
02ddf156 | 779 | const char *err = NULL; |
252b5132 RH |
780 | |
781 | sb_new (&t); | |
782 | ||
02ddf156 | 783 | while (src < in->len && !err) |
252b5132 RH |
784 | { |
785 | if (in->ptr[src] == '&') | |
786 | { | |
787 | sb_reset (&t); | |
788 | if (macro_mri) | |
789 | { | |
790 | if (src + 1 < in->len && in->ptr[src + 1] == '&') | |
791 | src = sub_actual (src + 2, in, &t, formal_hash, '\'', out, 1); | |
792 | else | |
793 | sb_add_char (out, in->ptr[src++]); | |
794 | } | |
795 | else | |
796 | { | |
d1f52f54 AM |
797 | /* Permit macro parameter substition delineated with |
798 | an '&' prefix and optional '&' suffix. */ | |
252b5132 RH |
799 | src = sub_actual (src + 1, in, &t, formal_hash, '&', out, 0); |
800 | } | |
801 | } | |
802 | else if (in->ptr[src] == '\\') | |
803 | { | |
804 | src++; | |
5e75c3ab | 805 | if (src < in->len && in->ptr[src] == '(') |
252b5132 | 806 | { |
29f8404c | 807 | /* Sub in till the next ')' literally. */ |
252b5132 RH |
808 | src++; |
809 | while (src < in->len && in->ptr[src] != ')') | |
810 | { | |
811 | sb_add_char (out, in->ptr[src++]); | |
812 | } | |
02ddf156 | 813 | if (src < in->len) |
252b5132 | 814 | src++; |
02ddf156 JB |
815 | else if (!macro) |
816 | err = _("missing `)'"); | |
252b5132 | 817 | else |
02ddf156 | 818 | as_bad_where (macro->file, macro->line + macro_line, _("missing `)'")); |
252b5132 | 819 | } |
5e75c3ab | 820 | else if (src < in->len && in->ptr[src] == '@') |
252b5132 | 821 | { |
29f8404c | 822 | /* Sub in the macro invocation number. */ |
252b5132 RH |
823 | |
824 | char buffer[10]; | |
825 | src++; | |
a2984248 | 826 | sprintf (buffer, "%d", macro_number); |
252b5132 RH |
827 | sb_add_string (out, buffer); |
828 | } | |
5e75c3ab | 829 | else if (src < in->len && in->ptr[src] == '&') |
252b5132 RH |
830 | { |
831 | /* This is a preprocessor variable name, we don't do them | |
29f8404c | 832 | here. */ |
252b5132 RH |
833 | sb_add_char (out, '\\'); |
834 | sb_add_char (out, '&'); | |
835 | src++; | |
836 | } | |
5e75c3ab | 837 | else if (macro_mri && src < in->len && ISALNUM (in->ptr[src])) |
252b5132 RH |
838 | { |
839 | int ind; | |
840 | formal_entry *f; | |
841 | ||
3882b010 | 842 | if (ISDIGIT (in->ptr[src])) |
252b5132 | 843 | ind = in->ptr[src] - '0'; |
3882b010 | 844 | else if (ISUPPER (in->ptr[src])) |
252b5132 RH |
845 | ind = in->ptr[src] - 'A' + 10; |
846 | else | |
847 | ind = in->ptr[src] - 'a' + 10; | |
848 | ++src; | |
849 | for (f = formals; f != NULL; f = f->next) | |
850 | { | |
851 | if (f->index == ind - 1) | |
852 | { | |
853 | if (f->actual.len != 0) | |
854 | sb_add_sb (out, &f->actual); | |
855 | else | |
856 | sb_add_sb (out, &f->def); | |
857 | break; | |
858 | } | |
859 | } | |
860 | } | |
861 | else | |
862 | { | |
863 | sb_reset (&t); | |
864 | src = sub_actual (src, in, &t, formal_hash, '\'', out, 0); | |
865 | } | |
866 | } | |
867 | else if ((macro_alternate || macro_mri) | |
5e75c3ab | 868 | && is_name_beginner (in->ptr[src]) |
252b5132 RH |
869 | && (! inquote |
870 | || ! macro_strip_at | |
871 | || (src > 0 && in->ptr[src - 1] == '@'))) | |
872 | { | |
02ddf156 | 873 | if (! macro |
252b5132 RH |
874 | || src + 5 >= in->len |
875 | || strncasecmp (in->ptr + src, "LOCAL", 5) != 0 | |
aa27de95 NC |
876 | || ! ISWHITE (in->ptr[src + 5]) |
877 | /* PR 11507: Skip keyword LOCAL if it is found inside a quoted string. */ | |
878 | || inquote) | |
252b5132 RH |
879 | { |
880 | sb_reset (&t); | |
881 | src = sub_actual (src, in, &t, formal_hash, | |
882 | (macro_strip_at && inquote) ? '@' : '\'', | |
883 | out, 1); | |
884 | } | |
885 | else | |
886 | { | |
252b5132 | 887 | src = sb_skip_white (src + 5, in); |
fea17916 | 888 | while (in->ptr[src] != '\n') |
252b5132 | 889 | { |
02ddf156 | 890 | const char *name; |
6eaeac8a | 891 | formal_entry *f = new_formal (); |
252b5132 | 892 | |
252b5132 | 893 | src = get_token (src, in, &f->name); |
02ddf156 JB |
894 | name = sb_terminate (&f->name); |
895 | if (! hash_find (formal_hash, name)) | |
896 | { | |
897 | static int loccnt; | |
898 | char buf[20]; | |
252b5132 | 899 | |
02ddf156 JB |
900 | f->index = LOCAL_INDEX; |
901 | f->next = loclist; | |
902 | loclist = f; | |
903 | ||
904 | sprintf (buf, IS_ELF ? ".LL%04x" : "LL%04x", ++loccnt); | |
905 | sb_add_string (&f->actual, buf); | |
906 | ||
907 | err = hash_jam (formal_hash, name, f); | |
908 | if (err != NULL) | |
909 | break; | |
910 | } | |
911 | else | |
912 | { | |
913 | as_bad_where (macro->file, | |
914 | macro->line + macro_line, | |
915 | _("`%s' was already used as parameter (or another local) name"), | |
916 | name); | |
6eaeac8a | 917 | del_formal (f); |
02ddf156 | 918 | } |
252b5132 RH |
919 | |
920 | src = sb_skip_comma (src, in); | |
921 | } | |
922 | } | |
923 | } | |
252b5132 RH |
924 | else if (in->ptr[src] == '"' |
925 | || (macro_mri && in->ptr[src] == '\'')) | |
926 | { | |
927 | inquote = !inquote; | |
928 | sb_add_char (out, in->ptr[src++]); | |
929 | } | |
930 | else if (in->ptr[src] == '@' && macro_strip_at) | |
931 | { | |
932 | ++src; | |
933 | if (src < in->len | |
934 | && in->ptr[src] == '@') | |
935 | { | |
936 | sb_add_char (out, '@'); | |
937 | ++src; | |
938 | } | |
939 | } | |
940 | else if (macro_mri | |
941 | && in->ptr[src] == '=' | |
942 | && src + 1 < in->len | |
943 | && in->ptr[src + 1] == '=') | |
944 | { | |
945 | formal_entry *ptr; | |
946 | ||
947 | sb_reset (&t); | |
948 | src = get_token (src + 2, in, &t); | |
949 | ptr = (formal_entry *) hash_find (formal_hash, sb_terminate (&t)); | |
950 | if (ptr == NULL) | |
951 | { | |
952 | /* FIXME: We should really return a warning string here, | |
953 | but we can't, because the == might be in the MRI | |
954 | comment field, and, since the nature of the MRI | |
955 | comment field depends upon the exact instruction | |
956 | being used, we don't have enough information here to | |
957 | figure out whether it is or not. Instead, we leave | |
958 | the == in place, which should cause a syntax error if | |
959 | it is not in a comment. */ | |
960 | sb_add_char (out, '='); | |
961 | sb_add_char (out, '='); | |
962 | sb_add_sb (out, &t); | |
963 | } | |
964 | else | |
965 | { | |
966 | if (ptr->actual.len) | |
967 | { | |
968 | sb_add_string (out, "-1"); | |
969 | } | |
970 | else | |
971 | { | |
972 | sb_add_char (out, '0'); | |
973 | } | |
974 | } | |
975 | } | |
976 | else | |
977 | { | |
02ddf156 JB |
978 | if (in->ptr[src] == '\n') |
979 | ++macro_line; | |
252b5132 RH |
980 | sb_add_char (out, in->ptr[src++]); |
981 | } | |
982 | } | |
983 | ||
984 | sb_kill (&t); | |
985 | ||
986 | while (loclist != NULL) | |
987 | { | |
988 | formal_entry *f; | |
818236e5 | 989 | const char *name; |
252b5132 RH |
990 | |
991 | f = loclist->next; | |
818236e5 AM |
992 | name = sb_terminate (&loclist->name); |
993 | hash_delete (formal_hash, name, f == NULL); | |
6eaeac8a | 994 | del_formal (loclist); |
252b5132 RH |
995 | loclist = f; |
996 | } | |
997 | ||
02ddf156 | 998 | return err; |
252b5132 RH |
999 | } |
1000 | ||
1001 | /* Assign values to the formal parameters of a macro, and expand the | |
1002 | body. */ | |
1003 | ||
1004 | static const char * | |
254d758c | 1005 | macro_expand (int idx, sb *in, macro_entry *m, sb *out) |
252b5132 RH |
1006 | { |
1007 | sb t; | |
1008 | formal_entry *ptr; | |
1009 | formal_entry *f; | |
252b5132 RH |
1010 | int is_keyword = 0; |
1011 | int narg = 0; | |
6eaeac8a | 1012 | const char *err = NULL; |
252b5132 RH |
1013 | |
1014 | sb_new (&t); | |
29f8404c KH |
1015 | |
1016 | /* Reset any old value the actuals may have. */ | |
252b5132 | 1017 | for (f = m->formals; f; f = f->next) |
29f8404c | 1018 | sb_reset (&f->actual); |
252b5132 RH |
1019 | f = m->formals; |
1020 | while (f != NULL && f->index < 0) | |
1021 | f = f->next; | |
1022 | ||
1023 | if (macro_mri) | |
1024 | { | |
1025 | /* The macro may be called with an optional qualifier, which may | |
1026 | be referred to in the macro body as \0. */ | |
1027 | if (idx < in->len && in->ptr[idx] == '.') | |
d1a6c242 KH |
1028 | { |
1029 | /* The Microtec assembler ignores this if followed by a white space. | |
1030 | (Macro invocation with empty extension) */ | |
1031 | idx++; | |
1032 | if ( idx < in->len | |
1033 | && in->ptr[idx] != ' ' | |
1034 | && in->ptr[idx] != '\t') | |
1035 | { | |
6eaeac8a | 1036 | formal_entry *n = new_formal (); |
d1a6c242 | 1037 | |
d1a6c242 KH |
1038 | n->index = QUAL_INDEX; |
1039 | ||
1040 | n->next = m->formals; | |
1041 | m->formals = n; | |
1042 | ||
be03cc84 | 1043 | idx = get_any_string (idx, in, &n->actual); |
d1a6c242 KH |
1044 | } |
1045 | } | |
1046 | } | |
252b5132 | 1047 | |
29f8404c | 1048 | /* Peel off the actuals and store them away in the hash tables' actuals. */ |
252b5132 | 1049 | idx = sb_skip_white (idx, in); |
fea17916 | 1050 | while (idx < in->len) |
252b5132 RH |
1051 | { |
1052 | int scan; | |
1053 | ||
29f8404c | 1054 | /* Look and see if it's a positional or keyword arg. */ |
252b5132 RH |
1055 | scan = idx; |
1056 | while (scan < in->len | |
1057 | && !ISSEP (in->ptr[scan]) | |
1058 | && !(macro_mri && in->ptr[scan] == '\'') | |
1059 | && (!macro_alternate && in->ptr[scan] != '=')) | |
1060 | scan++; | |
1061 | if (scan < in->len && !macro_alternate && in->ptr[scan] == '=') | |
1062 | { | |
1063 | is_keyword = 1; | |
1064 | ||
1065 | /* It's OK to go from positional to keyword. */ | |
1066 | ||
1067 | /* This is a keyword arg, fetch the formal name and | |
29f8404c | 1068 | then the actual stuff. */ |
252b5132 RH |
1069 | sb_reset (&t); |
1070 | idx = get_token (idx, in, &t); | |
1071 | if (in->ptr[idx] != '=') | |
6eaeac8a JB |
1072 | { |
1073 | err = _("confusion in formal parameters"); | |
1074 | break; | |
1075 | } | |
252b5132 | 1076 | |
29f8404c | 1077 | /* Lookup the formal in the macro's list. */ |
252b5132 RH |
1078 | ptr = (formal_entry *) hash_find (m->formal_hash, sb_terminate (&t)); |
1079 | if (!ptr) | |
c0ba1095 AM |
1080 | { |
1081 | as_bad (_("Parameter named `%s' does not exist for macro `%s'"), | |
1082 | t.ptr, | |
1083 | m->name); | |
1084 | sb_reset (&t); | |
1085 | idx = get_any_string (idx + 1, in, &t); | |
1086 | } | |
252b5132 RH |
1087 | else |
1088 | { | |
29f8404c | 1089 | /* Insert this value into the right place. */ |
6eaeac8a JB |
1090 | if (ptr->actual.len) |
1091 | { | |
1092 | as_warn (_("Value for parameter `%s' of macro `%s' was already specified"), | |
1093 | ptr->name.ptr, | |
1094 | m->name); | |
1095 | sb_reset (&ptr->actual); | |
1096 | } | |
be03cc84 | 1097 | idx = get_any_string (idx + 1, in, &ptr->actual); |
252b5132 RH |
1098 | if (ptr->actual.len > 0) |
1099 | ++narg; | |
1100 | } | |
1101 | } | |
1102 | else | |
1103 | { | |
252b5132 | 1104 | if (is_keyword) |
6eaeac8a JB |
1105 | { |
1106 | err = _("can't mix positional and keyword arguments"); | |
1107 | break; | |
1108 | } | |
252b5132 RH |
1109 | |
1110 | if (!f) | |
1111 | { | |
1112 | formal_entry **pf; | |
1113 | int c; | |
1114 | ||
1115 | if (!macro_mri) | |
6eaeac8a JB |
1116 | { |
1117 | err = _("too many positional arguments"); | |
1118 | break; | |
1119 | } | |
252b5132 | 1120 | |
6eaeac8a | 1121 | f = new_formal (); |
252b5132 RH |
1122 | |
1123 | c = -1; | |
1124 | for (pf = &m->formals; *pf != NULL; pf = &(*pf)->next) | |
1125 | if ((*pf)->index >= c) | |
1126 | c = (*pf)->index + 1; | |
1127 | if (c == -1) | |
1128 | c = 0; | |
1129 | *pf = f; | |
1130 | f->index = c; | |
1131 | } | |
1132 | ||
6eaeac8a | 1133 | if (f->type != FORMAL_VARARG) |
be03cc84 | 1134 | idx = get_any_string (idx, in, &f->actual); |
6eaeac8a JB |
1135 | else |
1136 | { | |
1137 | sb_add_buffer (&f->actual, in->ptr + idx, in->len - idx); | |
1138 | idx = in->len; | |
1139 | } | |
252b5132 RH |
1140 | if (f->actual.len > 0) |
1141 | ++narg; | |
1142 | do | |
1143 | { | |
1144 | f = f->next; | |
1145 | } | |
1146 | while (f != NULL && f->index < 0); | |
1147 | } | |
1148 | ||
1149 | if (! macro_mri) | |
1150 | idx = sb_skip_comma (idx, in); | |
1151 | else | |
1152 | { | |
1153 | if (in->ptr[idx] == ',') | |
1154 | ++idx; | |
1155 | if (ISWHITE (in->ptr[idx])) | |
1156 | break; | |
1157 | } | |
1158 | } | |
1159 | ||
6eaeac8a | 1160 | if (! err) |
252b5132 | 1161 | { |
6eaeac8a JB |
1162 | for (ptr = m->formals; ptr; ptr = ptr->next) |
1163 | { | |
1164 | if (ptr->type == FORMAL_REQUIRED && ptr->actual.len == 0) | |
1165 | as_bad (_("Missing value for required parameter `%s' of macro `%s'"), | |
1166 | ptr->name.ptr, | |
1167 | m->name); | |
1168 | } | |
252b5132 | 1169 | |
6eaeac8a JB |
1170 | if (macro_mri) |
1171 | { | |
1172 | char buffer[20]; | |
1173 | ||
1174 | sb_reset (&t); | |
1175 | sb_add_string (&t, macro_strip_at ? "$NARG" : "NARG"); | |
1176 | ptr = (formal_entry *) hash_find (m->formal_hash, sb_terminate (&t)); | |
1177 | sprintf (buffer, "%d", narg); | |
1178 | sb_add_string (&ptr->actual, buffer); | |
1179 | } | |
1180 | ||
1181 | err = macro_expand_body (&m->sub, out, m->formals, m->formal_hash, m); | |
1182 | } | |
252b5132 RH |
1183 | |
1184 | /* Discard any unnamed formal arguments. */ | |
1185 | if (macro_mri) | |
1186 | { | |
1187 | formal_entry **pf; | |
1188 | ||
1189 | pf = &m->formals; | |
1190 | while (*pf != NULL) | |
1191 | { | |
1192 | if ((*pf)->name.len != 0) | |
1193 | pf = &(*pf)->next; | |
1194 | else | |
1195 | { | |
252b5132 | 1196 | f = (*pf)->next; |
6eaeac8a | 1197 | del_formal (*pf); |
252b5132 RH |
1198 | *pf = f; |
1199 | } | |
1200 | } | |
1201 | } | |
1202 | ||
1203 | sb_kill (&t); | |
02ddf156 JB |
1204 | if (!err) |
1205 | macro_number++; | |
252b5132 | 1206 | |
02ddf156 | 1207 | return err; |
252b5132 RH |
1208 | } |
1209 | ||
1210 | /* Check for a macro. If one is found, put the expansion into | |
fea17916 | 1211 | *EXPAND. Return 1 if a macro is found, 0 otherwise. */ |
252b5132 RH |
1212 | |
1213 | int | |
254d758c KH |
1214 | check_macro (const char *line, sb *expand, |
1215 | const char **error, macro_entry **info) | |
252b5132 RH |
1216 | { |
1217 | const char *s; | |
91d6fa6a | 1218 | char *copy, *cls; |
252b5132 RH |
1219 | macro_entry *macro; |
1220 | sb line_sb; | |
1221 | ||
5e75c3ab | 1222 | if (! is_name_beginner (*line) |
252b5132 RH |
1223 | && (! macro_mri || *line != '.')) |
1224 | return 0; | |
1225 | ||
1226 | s = line + 1; | |
5e75c3ab JB |
1227 | while (is_part_of_name (*s)) |
1228 | ++s; | |
1229 | if (is_name_ender (*s)) | |
252b5132 RH |
1230 | ++s; |
1231 | ||
1232 | copy = (char *) alloca (s - line + 1); | |
1233 | memcpy (copy, line, s - line); | |
1234 | copy[s - line] = '\0'; | |
91d6fa6a NC |
1235 | for (cls = copy; *cls != '\0'; cls ++) |
1236 | *cls = TOLOWER (*cls); | |
252b5132 RH |
1237 | |
1238 | macro = (macro_entry *) hash_find (macro_hash, copy); | |
1239 | ||
1240 | if (macro == NULL) | |
1241 | return 0; | |
1242 | ||
1243 | /* Wrap the line up in an sb. */ | |
1244 | sb_new (&line_sb); | |
1245 | while (*s != '\0' && *s != '\n' && *s != '\r') | |
1246 | sb_add_char (&line_sb, *s++); | |
1247 | ||
1248 | sb_new (expand); | |
fea17916 | 1249 | *error = macro_expand (0, &line_sb, macro, expand); |
252b5132 RH |
1250 | |
1251 | sb_kill (&line_sb); | |
1252 | ||
29f8404c | 1253 | /* Export the macro information if requested. */ |
9f10757c TW |
1254 | if (info) |
1255 | *info = macro; | |
1256 | ||
252b5132 RH |
1257 | return 1; |
1258 | } | |
1259 | ||
1260 | /* Delete a macro. */ | |
1261 | ||
1262 | void | |
254d758c | 1263 | delete_macro (const char *name) |
252b5132 | 1264 | { |
e6ca91be JB |
1265 | char *copy; |
1266 | size_t i, len; | |
1267 | macro_entry *macro; | |
1268 | ||
1269 | len = strlen (name); | |
1270 | copy = (char *) alloca (len + 1); | |
1271 | for (i = 0; i < len; ++i) | |
1272 | copy[i] = TOLOWER (name[i]); | |
1273 | copy[i] = '\0'; | |
1274 | ||
818236e5 AM |
1275 | /* We can only ask hash_delete to free memory if we are deleting |
1276 | macros in reverse order to their definition. | |
1277 | So just clear out the entry. */ | |
1e9cc1c2 | 1278 | if ((macro = (macro_entry *) hash_find (macro_hash, copy)) != NULL) |
e6ca91be JB |
1279 | { |
1280 | hash_jam (macro_hash, copy, NULL); | |
1281 | free_macro (macro); | |
1282 | } | |
1283 | else | |
1284 | as_warn (_("Attempt to purge non-existant macro `%s'"), copy); | |
252b5132 RH |
1285 | } |
1286 | ||
1287 | /* Handle the MRI IRP and IRPC pseudo-ops. These are handled as a | |
1288 | combined macro definition and execution. This returns NULL on | |
1289 | success, or an error message otherwise. */ | |
1290 | ||
1291 | const char * | |
254d758c | 1292 | expand_irp (int irpc, int idx, sb *in, sb *out, int (*get_line) (sb *)) |
252b5132 | 1293 | { |
252b5132 RH |
1294 | sb sub; |
1295 | formal_entry f; | |
1296 | struct hash_control *h; | |
1297 | const char *err; | |
1298 | ||
252b5132 RH |
1299 | idx = sb_skip_white (idx, in); |
1300 | ||
1301 | sb_new (&sub); | |
ca3bc58f | 1302 | if (! buffer_and_nest (NULL, "ENDR", &sub, get_line)) |
252b5132 | 1303 | return _("unexpected end of file in irp or irpc"); |
29f8404c | 1304 | |
252b5132 RH |
1305 | sb_new (&f.name); |
1306 | sb_new (&f.def); | |
1307 | sb_new (&f.actual); | |
1308 | ||
1309 | idx = get_token (idx, in, &f.name); | |
1310 | if (f.name.len == 0) | |
1311 | return _("missing model parameter"); | |
1312 | ||
1313 | h = hash_new (); | |
1314 | err = hash_jam (h, sb_terminate (&f.name), &f); | |
1315 | if (err != NULL) | |
1316 | return err; | |
1317 | ||
1318 | f.index = 1; | |
1319 | f.next = NULL; | |
6eaeac8a | 1320 | f.type = FORMAL_OPTIONAL; |
252b5132 RH |
1321 | |
1322 | sb_reset (out); | |
1323 | ||
1324 | idx = sb_skip_comma (idx, in); | |
fea17916 | 1325 | if (idx >= in->len) |
252b5132 RH |
1326 | { |
1327 | /* Expand once with a null string. */ | |
fea17916 | 1328 | err = macro_expand_body (&sub, out, &f, h, 0); |
252b5132 RH |
1329 | } |
1330 | else | |
1331 | { | |
465e5617 NC |
1332 | bfd_boolean in_quotes = FALSE; |
1333 | ||
252b5132 | 1334 | if (irpc && in->ptr[idx] == '"') |
465e5617 NC |
1335 | { |
1336 | in_quotes = TRUE; | |
1337 | ++idx; | |
1338 | } | |
1339 | ||
fea17916 | 1340 | while (idx < in->len) |
252b5132 RH |
1341 | { |
1342 | if (!irpc) | |
be03cc84 | 1343 | idx = get_any_string (idx, in, &f.actual); |
252b5132 RH |
1344 | else |
1345 | { | |
1346 | if (in->ptr[idx] == '"') | |
1347 | { | |
1348 | int nxt; | |
1349 | ||
465e5617 NC |
1350 | if (irpc) |
1351 | in_quotes = ! in_quotes; | |
1352 | ||
252b5132 | 1353 | nxt = sb_skip_white (idx + 1, in); |
fea17916 | 1354 | if (nxt >= in->len) |
252b5132 RH |
1355 | { |
1356 | idx = nxt; | |
1357 | break; | |
1358 | } | |
1359 | } | |
1360 | sb_reset (&f.actual); | |
1361 | sb_add_char (&f.actual, in->ptr[idx]); | |
1362 | ++idx; | |
1363 | } | |
465e5617 | 1364 | |
fea17916 | 1365 | err = macro_expand_body (&sub, out, &f, h, 0); |
252b5132 | 1366 | if (err != NULL) |
02ddf156 | 1367 | break; |
252b5132 RH |
1368 | if (!irpc) |
1369 | idx = sb_skip_comma (idx, in); | |
465e5617 | 1370 | else if (! in_quotes) |
252b5132 RH |
1371 | idx = sb_skip_white (idx, in); |
1372 | } | |
1373 | } | |
1374 | ||
1375 | hash_die (h); | |
6eaeac8a JB |
1376 | sb_kill (&f.actual); |
1377 | sb_kill (&f.def); | |
1378 | sb_kill (&f.name); | |
252b5132 RH |
1379 | sb_kill (&sub); |
1380 | ||
02ddf156 | 1381 | return err; |
252b5132 | 1382 | } |