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fea17916 | 1 | /* macro.c - macro support for gas |
a2c58332 | 2 | Copyright (C) 1994-2022 Free Software Foundation, Inc. |
252b5132 RH |
3 | |
4 | Written by Steve and Judy Chamberlain of Cygnus Support, | |
5 | sac@cygnus.com | |
6 | ||
7 | This file is part of GAS, the GNU Assembler. | |
8 | ||
9 | GAS is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
ec2655a6 | 11 | the Free Software Foundation; either version 3, or (at your option) |
252b5132 RH |
12 | any later version. |
13 | ||
14 | GAS is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with GAS; see the file COPYING. If not, write to the Free | |
4b4da160 NC |
21 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
22 | 02110-1301, USA. */ | |
252b5132 | 23 | |
89658e52 | 24 | #include "as.h" |
3882b010 | 25 | #include "safe-ctype.h" |
252b5132 | 26 | #include "sb.h" |
252b5132 RH |
27 | #include "macro.h" |
28 | ||
252b5132 | 29 | /* The routines in this file handle macro definition and expansion. |
fea17916 | 30 | They are called by gas. */ |
252b5132 | 31 | |
252b5132 RH |
32 | #define ISWHITE(x) ((x) == ' ' || (x) == '\t') |
33 | ||
34 | #define ISSEP(x) \ | |
35 | ((x) == ' ' || (x) == '\t' || (x) == ',' || (x) == '"' || (x) == ';' \ | |
36 | || (x) == ')' || (x) == '(' \ | |
37 | || ((macro_alternate || macro_mri) && ((x) == '<' || (x) == '>'))) | |
38 | ||
39 | #define ISBASE(x) \ | |
40 | ((x) == 'b' || (x) == 'B' \ | |
41 | || (x) == 'q' || (x) == 'Q' \ | |
42 | || (x) == 'h' || (x) == 'H' \ | |
43 | || (x) == 'd' || (x) == 'D') | |
44 | ||
45 | /* The macro hash table. */ | |
46 | ||
bdcc1de1 | 47 | htab_t macro_hash; |
252b5132 RH |
48 | |
49 | /* Whether any macros have been defined. */ | |
50 | ||
51 | int macro_defined; | |
52 | ||
fea17916 | 53 | /* Whether we are in alternate syntax mode. */ |
252b5132 RH |
54 | |
55 | static int macro_alternate; | |
56 | ||
57 | /* Whether we are in MRI mode. */ | |
58 | ||
59 | static int macro_mri; | |
60 | ||
61 | /* Whether we should strip '@' characters. */ | |
62 | ||
63 | static int macro_strip_at; | |
64 | ||
65 | /* Function to use to parse an expression. */ | |
66 | ||
39a45edc | 67 | static size_t (*macro_expr) (const char *, size_t, sb *, offsetT *); |
252b5132 RH |
68 | |
69 | /* Number of macro expansions that have been done. */ | |
70 | ||
71 | static int macro_number; | |
72 | ||
73 | /* Initialize macro processing. */ | |
74 | ||
75 | void | |
254d758c | 76 | macro_init (int alternate, int mri, int strip_at, |
39a45edc | 77 | size_t (*exp) (const char *, size_t, sb *, offsetT *)) |
252b5132 | 78 | { |
bdcc1de1 | 79 | macro_hash = str_htab_create (); |
252b5132 RH |
80 | macro_defined = 0; |
81 | macro_alternate = alternate; | |
82 | macro_mri = mri; | |
83 | macro_strip_at = strip_at; | |
91d6fa6a | 84 | macro_expr = exp; |
252b5132 RH |
85 | } |
86 | ||
b1822093 AM |
87 | void |
88 | macro_end (void) | |
89 | { | |
90 | htab_delete (macro_hash); | |
91 | } | |
92 | ||
caa32fe5 NC |
93 | /* Switch in and out of alternate mode on the fly. */ |
94 | ||
95 | void | |
2766e5e4 | 96 | macro_set_alternate (int alternate) |
caa32fe5 NC |
97 | { |
98 | macro_alternate = alternate; | |
99 | } | |
100 | ||
252b5132 RH |
101 | /* Switch in and out of MRI mode on the fly. */ |
102 | ||
103 | void | |
254d758c | 104 | macro_mri_mode (int mri) |
252b5132 RH |
105 | { |
106 | macro_mri = mri; | |
107 | } | |
108 | ||
109 | /* Read input lines till we get to a TO string. | |
110 | Increase nesting depth if we get a FROM string. | |
111 | Put the results into sb at PTR. | |
ca3bc58f | 112 | FROM may be NULL (or will be ignored) if TO is "ENDR". |
252b5132 RH |
113 | Add a new input line to an sb using GET_LINE. |
114 | Return 1 on success, 0 on unexpected EOF. */ | |
115 | ||
116 | int | |
254d758c | 117 | buffer_and_nest (const char *from, const char *to, sb *ptr, |
39a45edc | 118 | size_t (*get_line) (sb *)) |
252b5132 | 119 | { |
39a45edc AM |
120 | size_t from_len; |
121 | size_t to_len = strlen (to); | |
252b5132 | 122 | int depth = 1; |
39a45edc AM |
123 | size_t line_start = ptr->len; |
124 | size_t more = get_line (ptr); | |
252b5132 | 125 | |
4ac14836 | 126 | if (to_len == 4 && strcasecmp (to, "ENDR") == 0) |
ca3bc58f JB |
127 | { |
128 | from = NULL; | |
129 | from_len = 0; | |
130 | } | |
131 | else | |
132 | from_len = strlen (from); | |
133 | ||
2ee1792b JB |
134 | /* Except for macros record the present source position, such that |
135 | diagnostics and debug info will be properly associated with the | |
136 | respective original lines, rather than with the line of the ending | |
137 | directive (TO). */ | |
138 | if (from == NULL || strcasecmp (from, "MACRO") != 0) | |
139 | { | |
140 | unsigned int line; | |
141 | char *linefile; | |
142 | ||
143 | as_where (&line); | |
818432e8 JB |
144 | if (!flag_m68k_mri) |
145 | linefile = xasprintf ("\t.linefile %u .\n", line); | |
146 | else | |
147 | linefile = xasprintf ("\tlinefile %u .\n", line); | |
2ee1792b JB |
148 | sb_add_buffer (ptr, linefile, strlen (linefile)); |
149 | xfree (linefile); | |
150 | } | |
151 | ||
252b5132 RH |
152 | while (more) |
153 | { | |
0e470c55 | 154 | /* Try to find the first pseudo op on the line. */ |
39a45edc | 155 | size_t i = line_start; |
5b7c81bd | 156 | bool had_colon = false; |
252b5132 | 157 | |
0e470c55 AM |
158 | /* With normal syntax we can suck what we want till we get |
159 | to the dot. With the alternate, labels have to start in | |
160 | the first column, since we can't tell what's a label and | |
161 | what's a pseudoop. */ | |
252b5132 | 162 | |
0e470c55 AM |
163 | if (! LABELS_WITHOUT_COLONS) |
164 | { | |
165 | /* Skip leading whitespace. */ | |
166 | while (i < ptr->len && ISWHITE (ptr->ptr[i])) | |
167 | i++; | |
168 | } | |
252b5132 | 169 | |
0e470c55 AM |
170 | for (;;) |
171 | { | |
172 | /* Skip over a label, if any. */ | |
173 | if (i >= ptr->len || ! is_name_beginner (ptr->ptr[i])) | |
174 | break; | |
175 | i++; | |
176 | while (i < ptr->len && is_part_of_name (ptr->ptr[i])) | |
177 | i++; | |
178 | if (i < ptr->len && is_name_ender (ptr->ptr[i])) | |
179 | i++; | |
0e470c55 AM |
180 | /* Skip whitespace. */ |
181 | while (i < ptr->len && ISWHITE (ptr->ptr[i])) | |
182 | i++; | |
183 | /* Check for the colon. */ | |
184 | if (i >= ptr->len || ptr->ptr[i] != ':') | |
5e75c3ab | 185 | { |
f19df8f7 AM |
186 | /* LABELS_WITHOUT_COLONS doesn't mean we cannot have a |
187 | colon after a label. If we do have a colon on the | |
188 | first label then handle more than one label on the | |
189 | line, assuming that each label has a colon. */ | |
190 | if (LABELS_WITHOUT_COLONS && !had_colon) | |
191 | break; | |
0e470c55 AM |
192 | i = line_start; |
193 | break; | |
5e75c3ab | 194 | } |
0e470c55 AM |
195 | i++; |
196 | line_start = i; | |
5b7c81bd | 197 | had_colon = true; |
252b5132 | 198 | } |
0e470c55 | 199 | |
29f8404c | 200 | /* Skip trailing whitespace. */ |
252b5132 RH |
201 | while (i < ptr->len && ISWHITE (ptr->ptr[i])) |
202 | i++; | |
203 | ||
204 | if (i < ptr->len && (ptr->ptr[i] == '.' | |
ca3bc58f | 205 | || NO_PSEUDO_DOT |
252b5132 RH |
206 | || macro_mri)) |
207 | { | |
ca3bc58f | 208 | if (! flag_m68k_mri && ptr->ptr[i] == '.') |
29f8404c | 209 | i++; |
4c5f3d0c | 210 | size_t len = ptr->len - i; |
d12b8d62 AM |
211 | if (from == NULL) |
212 | { | |
d12b8d62 AM |
213 | if (len >= 5 && strncasecmp (ptr->ptr + i, "IREPC", 5) == 0) |
214 | from_len = 5; | |
215 | else if (len >= 4 && strncasecmp (ptr->ptr + i, "IREP", 4) == 0) | |
216 | from_len = 4; | |
217 | else if (len >= 4 && strncasecmp (ptr->ptr + i, "IRPC", 4) == 0) | |
218 | from_len = 4; | |
219 | else if (len >= 4 && strncasecmp (ptr->ptr + i, "REPT", 4) == 0) | |
220 | from_len = 4; | |
221 | else if (len >= 3 && strncasecmp (ptr->ptr + i, "IRP", 3) == 0) | |
222 | from_len = 3; | |
223 | else if (len >= 3 && strncasecmp (ptr->ptr + i, "REP", 3) == 0) | |
224 | from_len = 3; | |
225 | else | |
226 | from_len = 0; | |
227 | } | |
ca3bc58f | 228 | if ((from != NULL |
4c5f3d0c AM |
229 | ? (len >= from_len |
230 | && strncasecmp (ptr->ptr + i, from, from_len) == 0) | |
ca3bc58f | 231 | : from_len > 0) |
4c5f3d0c | 232 | && (len == from_len |
5e75c3ab JB |
233 | || ! (is_part_of_name (ptr->ptr[i + from_len]) |
234 | || is_name_ender (ptr->ptr[i + from_len])))) | |
252b5132 | 235 | depth++; |
4c5f3d0c | 236 | if (len >= to_len |
d12b8d62 | 237 | && strncasecmp (ptr->ptr + i, to, to_len) == 0 |
4c5f3d0c | 238 | && (len == to_len |
5e75c3ab JB |
239 | || ! (is_part_of_name (ptr->ptr[i + to_len]) |
240 | || is_name_ender (ptr->ptr[i + to_len])))) | |
252b5132 RH |
241 | { |
242 | depth--; | |
243 | if (depth == 0) | |
244 | { | |
29f8404c | 245 | /* Reset the string to not include the ending rune. */ |
252b5132 RH |
246 | ptr->len = line_start; |
247 | break; | |
248 | } | |
249 | } | |
6d1ace68 CM |
250 | |
251 | /* PR gas/16908 | |
252 | Apply and discard .linefile directives that appear within | |
253 | the macro. For long macros, one might want to report the | |
254 | line number information associated with the lines within | |
255 | the macro definition, but we would need more infrastructure | |
256 | to make that happen correctly (e.g. resetting the line | |
257 | number when expanding the macro), and since for short | |
258 | macros we clearly prefer reporting the point of expansion | |
259 | anyway, there's not an obviously better fix here. */ | |
be13be5b JB |
260 | if (from != NULL && strcasecmp (from, "MACRO") == 0 |
261 | && len >= 8 && strncasecmp (ptr->ptr + i, "linefile", 8) == 0) | |
6d1ace68 | 262 | { |
6d1ace68 CM |
263 | char saved_eol_char = ptr->ptr[ptr->len]; |
264 | ||
265 | ptr->ptr[ptr->len] = '\0'; | |
af60449c | 266 | temp_ilp (ptr->ptr + i + 8); |
c39e89c3 | 267 | s_linefile (0); |
af60449c | 268 | restore_ilp (); |
6d1ace68 | 269 | ptr->ptr[ptr->len] = saved_eol_char; |
6d1ace68 CM |
270 | ptr->len = line_start; |
271 | } | |
252b5132 RH |
272 | } |
273 | ||
0822d075 NC |
274 | /* Add the original end-of-line char to the end and keep running. */ |
275 | sb_add_char (ptr, more); | |
252b5132 RH |
276 | line_start = ptr->len; |
277 | more = get_line (ptr); | |
278 | } | |
279 | ||
280 | /* Return 1 on success, 0 on unexpected EOF. */ | |
281 | return depth == 0; | |
282 | } | |
283 | ||
284 | /* Pick up a token. */ | |
285 | ||
39a45edc AM |
286 | static size_t |
287 | get_token (size_t idx, sb *in, sb *name) | |
252b5132 RH |
288 | { |
289 | if (idx < in->len | |
5e75c3ab | 290 | && is_name_beginner (in->ptr[idx])) |
252b5132 RH |
291 | { |
292 | sb_add_char (name, in->ptr[idx++]); | |
293 | while (idx < in->len | |
5e75c3ab JB |
294 | && is_part_of_name (in->ptr[idx])) |
295 | { | |
296 | sb_add_char (name, in->ptr[idx++]); | |
297 | } | |
298 | if (idx < in->len | |
299 | && is_name_ender (in->ptr[idx])) | |
252b5132 RH |
300 | { |
301 | sb_add_char (name, in->ptr[idx++]); | |
302 | } | |
303 | } | |
29f8404c | 304 | /* Ignore trailing &. */ |
252b5132 RH |
305 | if (macro_alternate && idx < in->len && in->ptr[idx] == '&') |
306 | idx++; | |
307 | return idx; | |
308 | } | |
309 | ||
310 | /* Pick up a string. */ | |
311 | ||
39a45edc AM |
312 | static size_t |
313 | getstring (size_t idx, sb *in, sb *acc) | |
252b5132 | 314 | { |
252b5132 | 315 | while (idx < in->len |
29f8404c | 316 | && (in->ptr[idx] == '"' |
252b5132 RH |
317 | || (in->ptr[idx] == '<' && (macro_alternate || macro_mri)) |
318 | || (in->ptr[idx] == '\'' && macro_alternate))) | |
319 | { | |
2f6178c1 | 320 | if (in->ptr[idx] == '<') |
252b5132 RH |
321 | { |
322 | int nest = 0; | |
323 | idx++; | |
10c172ba WH |
324 | while (idx < in->len |
325 | && (in->ptr[idx] != '>' || nest)) | |
252b5132 RH |
326 | { |
327 | if (in->ptr[idx] == '!') | |
328 | { | |
29f8404c | 329 | idx++; |
252b5132 RH |
330 | sb_add_char (acc, in->ptr[idx++]); |
331 | } | |
332 | else | |
333 | { | |
0e31b3e1 | 334 | if (in->ptr[idx] == '>') |
252b5132 | 335 | nest--; |
0e31b3e1 | 336 | if (in->ptr[idx] == '<') |
252b5132 RH |
337 | nest++; |
338 | sb_add_char (acc, in->ptr[idx++]); | |
339 | } | |
340 | } | |
341 | idx++; | |
342 | } | |
343 | else if (in->ptr[idx] == '"' || in->ptr[idx] == '\'') | |
344 | { | |
345 | char tchar = in->ptr[idx]; | |
c06ae4f2 | 346 | int escaped = 0; |
29f8404c | 347 | |
252b5132 | 348 | idx++; |
29f8404c | 349 | |
252b5132 RH |
350 | while (idx < in->len) |
351 | { | |
29f8404c | 352 | if (in->ptr[idx - 1] == '\\') |
c06ae4f2 UC |
353 | escaped ^= 1; |
354 | else | |
355 | escaped = 0; | |
356 | ||
252b5132 RH |
357 | if (macro_alternate && in->ptr[idx] == '!') |
358 | { | |
e972090a | 359 | idx ++; |
29f8404c | 360 | |
1994a7c7 NC |
361 | sb_add_char (acc, in->ptr[idx]); |
362 | ||
e972090a | 363 | idx ++; |
252b5132 | 364 | } |
c06ae4f2 UC |
365 | else if (escaped && in->ptr[idx] == tchar) |
366 | { | |
367 | sb_add_char (acc, tchar); | |
e972090a | 368 | idx ++; |
c06ae4f2 | 369 | } |
252b5132 RH |
370 | else |
371 | { | |
372 | if (in->ptr[idx] == tchar) | |
373 | { | |
e972090a | 374 | idx ++; |
29f8404c | 375 | |
252b5132 RH |
376 | if (idx >= in->len || in->ptr[idx] != tchar) |
377 | break; | |
378 | } | |
29f8404c | 379 | |
252b5132 | 380 | sb_add_char (acc, in->ptr[idx]); |
e972090a | 381 | idx ++; |
252b5132 RH |
382 | } |
383 | } | |
384 | } | |
385 | } | |
29f8404c | 386 | |
252b5132 RH |
387 | return idx; |
388 | } | |
389 | ||
390 | /* Fetch string from the input stream, | |
391 | rules: | |
392 | 'Bxyx<whitespace> -> return 'Bxyza | |
df40eaf9 NC |
393 | %<expr> -> return string of decimal value of <expr> |
394 | "string" -> return string | |
2f6178c1 | 395 | (string) -> return (string-including-whitespaces) |
df40eaf9 | 396 | xyx<whitespace> -> return xyz. */ |
252b5132 | 397 | |
39a45edc AM |
398 | static size_t |
399 | get_any_string (size_t idx, sb *in, sb *out) | |
252b5132 RH |
400 | { |
401 | sb_reset (out); | |
402 | idx = sb_skip_white (idx, in); | |
403 | ||
404 | if (idx < in->len) | |
405 | { | |
9df59bba | 406 | if (in->len > idx + 2 && in->ptr[idx + 1] == '\'' && ISBASE (in->ptr[idx])) |
252b5132 | 407 | { |
1b2ed39c | 408 | while (idx < in->len && !ISSEP (in->ptr[idx])) |
252b5132 RH |
409 | sb_add_char (out, in->ptr[idx++]); |
410 | } | |
be03cc84 | 411 | else if (in->ptr[idx] == '%' && macro_alternate) |
252b5132 | 412 | { |
39a45edc | 413 | offsetT val; |
3076e594 | 414 | char buf[64]; |
df40eaf9 | 415 | |
29f8404c | 416 | /* Turns the next expression into a string. */ |
06f030db | 417 | /* xgettext: no-c-format */ |
252b5132 RH |
418 | idx = (*macro_expr) (_("% operator needs absolute expression"), |
419 | idx + 1, | |
420 | in, | |
421 | &val); | |
39a45edc | 422 | sprintf (buf, "%" BFD_VMA_FMT "d", val); |
252b5132 RH |
423 | sb_add_string (out, buf); |
424 | } | |
425 | else if (in->ptr[idx] == '"' | |
426 | || (in->ptr[idx] == '<' && (macro_alternate || macro_mri)) | |
427 | || (macro_alternate && in->ptr[idx] == '\'')) | |
428 | { | |
9f6f925e | 429 | if (macro_alternate && ! macro_strip_at && in->ptr[idx] != '<') |
252b5132 | 430 | { |
29f8404c | 431 | /* Keep the quotes. */ |
9f6f925e | 432 | sb_add_char (out, '"'); |
252b5132 | 433 | idx = getstring (idx, in, out); |
9f6f925e | 434 | sb_add_char (out, '"'); |
252b5132 RH |
435 | } |
436 | else | |
437 | { | |
438 | idx = getstring (idx, in, out); | |
439 | } | |
440 | } | |
29f8404c | 441 | else |
252b5132 | 442 | { |
add39d23 | 443 | char *br_buf = XNEWVEC (char, 1); |
0e31b3e1 JB |
444 | char *in_br = br_buf; |
445 | ||
446 | *in_br = '\0'; | |
29f8404c | 447 | while (idx < in->len |
0e31b3e1 JB |
448 | && (*in_br |
449 | || (in->ptr[idx] != ' ' | |
450 | && in->ptr[idx] != '\t')) | |
be03cc84 JB |
451 | && in->ptr[idx] != ',' |
452 | && (in->ptr[idx] != '<' | |
453 | || (! macro_alternate && ! macro_mri))) | |
252b5132 | 454 | { |
0e31b3e1 | 455 | char tchar = in->ptr[idx]; |
df40eaf9 | 456 | |
0e31b3e1 JB |
457 | switch (tchar) |
458 | { | |
459 | case '"': | |
460 | case '\'': | |
252b5132 RH |
461 | sb_add_char (out, in->ptr[idx++]); |
462 | while (idx < in->len | |
463 | && in->ptr[idx] != tchar) | |
29f8404c | 464 | sb_add_char (out, in->ptr[idx++]); |
252b5132 | 465 | if (idx == in->len) |
4ac14836 NC |
466 | { |
467 | free (br_buf); | |
468 | return idx; | |
469 | } | |
0e31b3e1 JB |
470 | break; |
471 | case '(': | |
472 | case '[': | |
473 | if (in_br > br_buf) | |
474 | --in_br; | |
475 | else | |
476 | { | |
add39d23 | 477 | br_buf = XNEWVEC (char, strlen (in_br) + 2); |
4ac14836 NC |
478 | strcpy (br_buf + 1, in_br); |
479 | free (in_br); | |
0e31b3e1 JB |
480 | in_br = br_buf; |
481 | } | |
482 | *in_br = tchar; | |
483 | break; | |
484 | case ')': | |
485 | if (*in_br == '(') | |
486 | ++in_br; | |
487 | break; | |
488 | case ']': | |
489 | if (*in_br == '[') | |
490 | ++in_br; | |
491 | break; | |
252b5132 | 492 | } |
0e31b3e1 JB |
493 | sb_add_char (out, tchar); |
494 | ++idx; | |
252b5132 | 495 | } |
4ac14836 | 496 | free (br_buf); |
252b5132 RH |
497 | } |
498 | } | |
499 | ||
500 | return idx; | |
501 | } | |
502 | ||
6eaeac8a JB |
503 | /* Allocate a new formal. */ |
504 | ||
505 | static formal_entry * | |
506 | new_formal (void) | |
507 | { | |
508 | formal_entry *formal; | |
509 | ||
325801bd | 510 | formal = XNEW (formal_entry); |
6eaeac8a JB |
511 | |
512 | sb_new (&formal->name); | |
513 | sb_new (&formal->def); | |
514 | sb_new (&formal->actual); | |
515 | formal->next = NULL; | |
516 | formal->type = FORMAL_OPTIONAL; | |
517 | return formal; | |
518 | } | |
519 | ||
520 | /* Free a formal. */ | |
521 | ||
522 | static void | |
523 | del_formal (formal_entry *formal) | |
524 | { | |
525 | sb_kill (&formal->actual); | |
526 | sb_kill (&formal->def); | |
527 | sb_kill (&formal->name); | |
528 | free (formal); | |
529 | } | |
530 | ||
252b5132 RH |
531 | /* Pick up the formal parameters of a macro definition. */ |
532 | ||
39a45edc AM |
533 | static size_t |
534 | do_formals (macro_entry *macro, size_t idx, sb *in) | |
252b5132 RH |
535 | { |
536 | formal_entry **p = ¯o->formals; | |
02ddf156 | 537 | const char *name; |
252b5132 | 538 | |
057f53c1 | 539 | idx = sb_skip_white (idx, in); |
252b5132 RH |
540 | while (idx < in->len) |
541 | { | |
6eaeac8a | 542 | formal_entry *formal = new_formal (); |
39a45edc | 543 | size_t cidx; |
252b5132 | 544 | |
252b5132 RH |
545 | idx = get_token (idx, in, &formal->name); |
546 | if (formal->name.len == 0) | |
057f53c1 JB |
547 | { |
548 | if (macro->formal_count) | |
549 | --idx; | |
4ac14836 | 550 | del_formal (formal); /* 'formal' goes out of scope. */ |
057f53c1 JB |
551 | break; |
552 | } | |
252b5132 | 553 | idx = sb_skip_white (idx, in); |
057f53c1 | 554 | /* This is a formal. */ |
6eaeac8a JB |
555 | name = sb_terminate (&formal->name); |
556 | if (! macro_mri | |
557 | && idx < in->len | |
558 | && in->ptr[idx] == ':' | |
559 | && (! is_name_beginner (':') | |
560 | || idx + 1 >= in->len | |
561 | || ! is_part_of_name (in->ptr[idx + 1]))) | |
562 | { | |
563 | /* Got a qualifier. */ | |
564 | sb qual; | |
565 | ||
566 | sb_new (&qual); | |
567 | idx = get_token (sb_skip_white (idx + 1, in), in, &qual); | |
568 | sb_terminate (&qual); | |
569 | if (qual.len == 0) | |
570 | as_bad_where (macro->file, | |
571 | macro->line, | |
572 | _("Missing parameter qualifier for `%s' in macro `%s'"), | |
573 | name, | |
574 | macro->name); | |
575 | else if (strcmp (qual.ptr, "req") == 0) | |
576 | formal->type = FORMAL_REQUIRED; | |
577 | else if (strcmp (qual.ptr, "vararg") == 0) | |
578 | formal->type = FORMAL_VARARG; | |
579 | else | |
580 | as_bad_where (macro->file, | |
581 | macro->line, | |
582 | _("`%s' is not a valid parameter qualifier for `%s' in macro `%s'"), | |
583 | qual.ptr, | |
584 | name, | |
585 | macro->name); | |
586 | sb_kill (&qual); | |
587 | idx = sb_skip_white (idx, in); | |
588 | } | |
057f53c1 | 589 | if (idx < in->len && in->ptr[idx] == '=') |
252b5132 | 590 | { |
057f53c1 | 591 | /* Got a default. */ |
be03cc84 | 592 | idx = get_any_string (idx + 1, in, &formal->def); |
057f53c1 | 593 | idx = sb_skip_white (idx, in); |
6eaeac8a JB |
594 | if (formal->type == FORMAL_REQUIRED) |
595 | { | |
596 | sb_reset (&formal->def); | |
597 | as_warn_where (macro->file, | |
598 | macro->line, | |
599 | _("Pointless default value for required parameter `%s' in macro `%s'"), | |
600 | name, | |
601 | macro->name); | |
602 | } | |
252b5132 RH |
603 | } |
604 | ||
29f8404c | 605 | /* Add to macro's hash table. */ |
bdcc1de1 | 606 | if (str_hash_insert (macro->formal_hash, name, formal, 0) != NULL) |
fe0e921f | 607 | { |
fe0e921f AM |
608 | as_bad_where (macro->file, macro->line, |
609 | _("A parameter named `%s' " | |
610 | "already exists for macro `%s'"), | |
611 | name, macro->name); | |
612 | } | |
252b5132 | 613 | |
057f53c1 | 614 | formal->index = macro->formal_count++; |
6eaeac8a JB |
615 | *p = formal; |
616 | p = &formal->next; | |
617 | if (formal->type == FORMAL_VARARG) | |
618 | break; | |
057f53c1 | 619 | cidx = idx; |
252b5132 | 620 | idx = sb_skip_comma (idx, in); |
057f53c1 JB |
621 | if (idx != cidx && idx >= in->len) |
622 | { | |
623 | idx = cidx; | |
624 | break; | |
625 | } | |
252b5132 RH |
626 | } |
627 | ||
628 | if (macro_mri) | |
629 | { | |
6eaeac8a | 630 | formal_entry *formal = new_formal (); |
252b5132 RH |
631 | |
632 | /* Add a special NARG formal, which macro_expand will set to the | |
4c665b71 | 633 | number of arguments. */ |
252b5132 | 634 | /* The same MRI assemblers which treat '@' characters also use |
4c665b71 | 635 | the name $NARG. At least until we find an exception. */ |
252b5132 RH |
636 | if (macro_strip_at) |
637 | name = "$NARG"; | |
638 | else | |
639 | name = "NARG"; | |
640 | ||
641 | sb_add_string (&formal->name, name); | |
642 | ||
29f8404c | 643 | /* Add to macro's hash table. */ |
bdcc1de1 | 644 | if (str_hash_insert (macro->formal_hash, name, formal, 0) != NULL) |
fe0e921f | 645 | { |
fe0e921f AM |
646 | as_bad_where (macro->file, macro->line, |
647 | _("Reserved word `%s' used as parameter in macro `%s'"), | |
648 | name, macro->name); | |
649 | } | |
252b5132 RH |
650 | |
651 | formal->index = NARG_INDEX; | |
652 | *p = formal; | |
252b5132 RH |
653 | } |
654 | ||
655 | return idx; | |
656 | } | |
657 | ||
f19df8f7 AM |
658 | /* Free the memory allocated to a macro. */ |
659 | ||
660 | static void | |
661 | free_macro (macro_entry *macro) | |
662 | { | |
663 | formal_entry *formal; | |
664 | ||
665 | for (formal = macro->formals; formal; ) | |
666 | { | |
667 | formal_entry *f; | |
668 | ||
669 | f = formal; | |
670 | formal = formal->next; | |
671 | del_formal (f); | |
672 | } | |
2b272f44 | 673 | htab_delete (macro->formal_hash); |
f19df8f7 AM |
674 | sb_kill (¯o->sub); |
675 | free (macro); | |
676 | } | |
677 | ||
252b5132 RH |
678 | /* Define a new macro. Returns NULL on success, otherwise returns an |
679 | error message. If NAMEP is not NULL, *NAMEP is set to the name of | |
680 | the macro which was defined. */ | |
681 | ||
682 | const char * | |
39a45edc AM |
683 | define_macro (size_t idx, sb *in, sb *label, |
684 | size_t (*get_line) (sb *), | |
3b4dbbbf | 685 | const char *file, unsigned int line, |
02ddf156 | 686 | const char **namep) |
252b5132 RH |
687 | { |
688 | macro_entry *macro; | |
689 | sb name; | |
02ddf156 | 690 | const char *error = NULL; |
252b5132 | 691 | |
325801bd | 692 | macro = XNEW (macro_entry); |
252b5132 RH |
693 | sb_new (¯o->sub); |
694 | sb_new (&name); | |
02ddf156 JB |
695 | macro->file = file; |
696 | macro->line = line; | |
252b5132 RH |
697 | |
698 | macro->formal_count = 0; | |
699 | macro->formals = 0; | |
bdcc1de1 | 700 | macro->formal_hash = str_htab_create (); |
252b5132 RH |
701 | |
702 | idx = sb_skip_white (idx, in); | |
703 | if (! buffer_and_nest ("MACRO", "ENDM", ¯o->sub, get_line)) | |
02ddf156 | 704 | error = _("unexpected end of file in macro `%s' definition"); |
252b5132 RH |
705 | if (label != NULL && label->len != 0) |
706 | { | |
707 | sb_add_sb (&name, label); | |
02ddf156 | 708 | macro->name = sb_terminate (&name); |
252b5132 RH |
709 | if (idx < in->len && in->ptr[idx] == '(') |
710 | { | |
29f8404c | 711 | /* It's the label: MACRO (formals,...) sort */ |
252b5132 | 712 | idx = do_formals (macro, idx + 1, in); |
02ddf156 JB |
713 | if (idx < in->len && in->ptr[idx] == ')') |
714 | idx = sb_skip_white (idx + 1, in); | |
715 | else if (!error) | |
716 | error = _("missing `)' after formals in macro definition `%s'"); | |
252b5132 RH |
717 | } |
718 | else | |
719 | { | |
29f8404c | 720 | /* It's the label: MACRO formals,... sort */ |
252b5132 RH |
721 | idx = do_formals (macro, idx, in); |
722 | } | |
723 | } | |
724 | else | |
725 | { | |
39a45edc | 726 | size_t cidx; |
057f53c1 | 727 | |
252b5132 | 728 | idx = get_token (idx, in, &name); |
02ddf156 | 729 | macro->name = sb_terminate (&name); |
057f53c1 | 730 | if (name.len == 0) |
02ddf156 | 731 | error = _("Missing macro name"); |
057f53c1 JB |
732 | cidx = sb_skip_white (idx, in); |
733 | idx = sb_skip_comma (cidx, in); | |
734 | if (idx == cidx || idx < in->len) | |
735 | idx = do_formals (macro, idx, in); | |
736 | else | |
737 | idx = cidx; | |
252b5132 | 738 | } |
02ddf156 JB |
739 | if (!error && idx < in->len) |
740 | error = _("Bad parameter list for macro `%s'"); | |
252b5132 | 741 | |
29f8404c | 742 | /* And stick it in the macro hash table. */ |
252b5132 | 743 | for (idx = 0; idx < name.len; idx++) |
3882b010 | 744 | name.ptr[idx] = TOLOWER (name.ptr[idx]); |
02ddf156 | 745 | if (!error) |
fe0e921f | 746 | { |
bdcc1de1 AM |
747 | if (str_hash_insert (macro_hash, macro->name, macro, 0) != NULL) |
748 | error = _("Macro `%s' was already defined"); | |
fe0e921f | 749 | } |
252b5132 RH |
750 | |
751 | if (namep != NULL) | |
02ddf156 JB |
752 | *namep = macro->name; |
753 | ||
754 | if (!error) | |
755 | macro_defined = 1; | |
756 | else | |
757 | free_macro (macro); | |
252b5132 | 758 | |
02ddf156 | 759 | return error; |
252b5132 RH |
760 | } |
761 | ||
762 | /* Scan a token, and then skip KIND. */ | |
763 | ||
39a45edc AM |
764 | static size_t |
765 | get_apost_token (size_t idx, sb *in, sb *name, int kind) | |
252b5132 RH |
766 | { |
767 | idx = get_token (idx, in, name); | |
768 | if (idx < in->len | |
769 | && in->ptr[idx] == kind | |
770 | && (! macro_mri || macro_strip_at) | |
771 | && (! macro_strip_at || kind == '@')) | |
772 | idx++; | |
773 | return idx; | |
774 | } | |
775 | ||
776 | /* Substitute the actual value for a formal parameter. */ | |
777 | ||
39a45edc | 778 | static size_t |
2b272f44 | 779 | sub_actual (size_t start, sb *in, sb *t, struct htab *formal_hash, |
254d758c | 780 | int kind, sb *out, int copyifnotthere) |
252b5132 | 781 | { |
39a45edc | 782 | size_t src; |
252b5132 RH |
783 | formal_entry *ptr; |
784 | ||
785 | src = get_apost_token (start, in, t, kind); | |
786 | /* See if it's in the macro's hash table, unless this is | |
787 | macro_strip_at and kind is '@' and the token did not end in '@'. */ | |
788 | if (macro_strip_at | |
789 | && kind == '@' | |
790 | && (src == start || in->ptr[src - 1] != '@')) | |
791 | ptr = NULL; | |
792 | else | |
bdcc1de1 | 793 | ptr = str_hash_find (formal_hash, sb_terminate (t)); |
252b5132 RH |
794 | if (ptr) |
795 | { | |
796 | if (ptr->actual.len) | |
797 | { | |
798 | sb_add_sb (out, &ptr->actual); | |
799 | } | |
800 | else | |
801 | { | |
802 | sb_add_sb (out, &ptr->def); | |
803 | } | |
804 | } | |
805 | else if (kind == '&') | |
806 | { | |
807 | /* Doing this permits people to use & in macro bodies. */ | |
808 | sb_add_char (out, '&'); | |
c1ed1235 | 809 | sb_add_sb (out, t); |
d1f52f54 AM |
810 | if (src != start && in->ptr[src - 1] == '&') |
811 | sb_add_char (out, '&'); | |
252b5132 RH |
812 | } |
813 | else if (copyifnotthere) | |
814 | { | |
815 | sb_add_sb (out, t); | |
816 | } | |
29f8404c | 817 | else |
252b5132 RH |
818 | { |
819 | sb_add_char (out, '\\'); | |
820 | sb_add_sb (out, t); | |
821 | } | |
822 | return src; | |
823 | } | |
824 | ||
825 | /* Expand the body of a macro. */ | |
826 | ||
827 | static const char * | |
254d758c | 828 | macro_expand_body (sb *in, sb *out, formal_entry *formals, |
2b272f44 | 829 | struct htab *formal_hash, const macro_entry *macro) |
252b5132 RH |
830 | { |
831 | sb t; | |
39a45edc AM |
832 | size_t src = 0; |
833 | int inquote = 0, macro_line = 0; | |
252b5132 | 834 | formal_entry *loclist = NULL; |
02ddf156 | 835 | const char *err = NULL; |
252b5132 RH |
836 | |
837 | sb_new (&t); | |
838 | ||
02ddf156 | 839 | while (src < in->len && !err) |
252b5132 RH |
840 | { |
841 | if (in->ptr[src] == '&') | |
842 | { | |
843 | sb_reset (&t); | |
844 | if (macro_mri) | |
845 | { | |
846 | if (src + 1 < in->len && in->ptr[src + 1] == '&') | |
847 | src = sub_actual (src + 2, in, &t, formal_hash, '\'', out, 1); | |
848 | else | |
849 | sb_add_char (out, in->ptr[src++]); | |
850 | } | |
851 | else | |
852 | { | |
33eaf5de | 853 | /* Permit macro parameter substitution delineated with |
d1f52f54 | 854 | an '&' prefix and optional '&' suffix. */ |
252b5132 RH |
855 | src = sub_actual (src + 1, in, &t, formal_hash, '&', out, 0); |
856 | } | |
857 | } | |
858 | else if (in->ptr[src] == '\\') | |
859 | { | |
860 | src++; | |
5e75c3ab | 861 | if (src < in->len && in->ptr[src] == '(') |
252b5132 | 862 | { |
29f8404c | 863 | /* Sub in till the next ')' literally. */ |
252b5132 RH |
864 | src++; |
865 | while (src < in->len && in->ptr[src] != ')') | |
866 | { | |
867 | sb_add_char (out, in->ptr[src++]); | |
868 | } | |
02ddf156 | 869 | if (src < in->len) |
252b5132 | 870 | src++; |
02ddf156 JB |
871 | else if (!macro) |
872 | err = _("missing `)'"); | |
252b5132 | 873 | else |
02ddf156 | 874 | as_bad_where (macro->file, macro->line + macro_line, _("missing `)'")); |
252b5132 | 875 | } |
5e75c3ab | 876 | else if (src < in->len && in->ptr[src] == '@') |
252b5132 | 877 | { |
29f8404c | 878 | /* Sub in the macro invocation number. */ |
252b5132 | 879 | |
98a4fc78 | 880 | char buffer[12]; |
252b5132 | 881 | src++; |
a2984248 | 882 | sprintf (buffer, "%d", macro_number); |
252b5132 RH |
883 | sb_add_string (out, buffer); |
884 | } | |
5e75c3ab | 885 | else if (src < in->len && in->ptr[src] == '&') |
252b5132 RH |
886 | { |
887 | /* This is a preprocessor variable name, we don't do them | |
29f8404c | 888 | here. */ |
252b5132 RH |
889 | sb_add_char (out, '\\'); |
890 | sb_add_char (out, '&'); | |
891 | src++; | |
892 | } | |
5e75c3ab | 893 | else if (macro_mri && src < in->len && ISALNUM (in->ptr[src])) |
252b5132 RH |
894 | { |
895 | int ind; | |
896 | formal_entry *f; | |
897 | ||
3882b010 | 898 | if (ISDIGIT (in->ptr[src])) |
252b5132 | 899 | ind = in->ptr[src] - '0'; |
3882b010 | 900 | else if (ISUPPER (in->ptr[src])) |
252b5132 RH |
901 | ind = in->ptr[src] - 'A' + 10; |
902 | else | |
903 | ind = in->ptr[src] - 'a' + 10; | |
904 | ++src; | |
905 | for (f = formals; f != NULL; f = f->next) | |
906 | { | |
907 | if (f->index == ind - 1) | |
908 | { | |
909 | if (f->actual.len != 0) | |
910 | sb_add_sb (out, &f->actual); | |
911 | else | |
912 | sb_add_sb (out, &f->def); | |
913 | break; | |
914 | } | |
915 | } | |
916 | } | |
917 | else | |
918 | { | |
919 | sb_reset (&t); | |
920 | src = sub_actual (src, in, &t, formal_hash, '\'', out, 0); | |
921 | } | |
922 | } | |
923 | else if ((macro_alternate || macro_mri) | |
5e75c3ab | 924 | && is_name_beginner (in->ptr[src]) |
252b5132 RH |
925 | && (! inquote |
926 | || ! macro_strip_at | |
927 | || (src > 0 && in->ptr[src - 1] == '@'))) | |
928 | { | |
02ddf156 | 929 | if (! macro |
252b5132 RH |
930 | || src + 5 >= in->len |
931 | || strncasecmp (in->ptr + src, "LOCAL", 5) != 0 | |
aa27de95 NC |
932 | || ! ISWHITE (in->ptr[src + 5]) |
933 | /* PR 11507: Skip keyword LOCAL if it is found inside a quoted string. */ | |
934 | || inquote) | |
252b5132 RH |
935 | { |
936 | sb_reset (&t); | |
937 | src = sub_actual (src, in, &t, formal_hash, | |
938 | (macro_strip_at && inquote) ? '@' : '\'', | |
939 | out, 1); | |
940 | } | |
941 | else | |
942 | { | |
252b5132 | 943 | src = sb_skip_white (src + 5, in); |
fea17916 | 944 | while (in->ptr[src] != '\n') |
252b5132 | 945 | { |
02ddf156 | 946 | const char *name; |
6eaeac8a | 947 | formal_entry *f = new_formal (); |
252b5132 | 948 | |
252b5132 | 949 | src = get_token (src, in, &f->name); |
02ddf156 | 950 | name = sb_terminate (&f->name); |
bdcc1de1 | 951 | if (str_hash_insert (formal_hash, name, f, 0) != NULL) |
fe0e921f | 952 | { |
fe0e921f AM |
953 | as_bad_where (macro->file, macro->line + macro_line, |
954 | _("`%s' was already used as parameter " | |
955 | "(or another local) name"), name); | |
956 | del_formal (f); | |
957 | } | |
958 | else | |
02ddf156 JB |
959 | { |
960 | static int loccnt; | |
961 | char buf[20]; | |
252b5132 | 962 | |
02ddf156 JB |
963 | f->index = LOCAL_INDEX; |
964 | f->next = loclist; | |
965 | loclist = f; | |
966 | ||
967 | sprintf (buf, IS_ELF ? ".LL%04x" : "LL%04x", ++loccnt); | |
968 | sb_add_string (&f->actual, buf); | |
02ddf156 | 969 | } |
252b5132 RH |
970 | |
971 | src = sb_skip_comma (src, in); | |
972 | } | |
973 | } | |
974 | } | |
252b5132 RH |
975 | else if (in->ptr[src] == '"' |
976 | || (macro_mri && in->ptr[src] == '\'')) | |
977 | { | |
978 | inquote = !inquote; | |
979 | sb_add_char (out, in->ptr[src++]); | |
980 | } | |
981 | else if (in->ptr[src] == '@' && macro_strip_at) | |
982 | { | |
983 | ++src; | |
984 | if (src < in->len | |
985 | && in->ptr[src] == '@') | |
986 | { | |
987 | sb_add_char (out, '@'); | |
988 | ++src; | |
989 | } | |
990 | } | |
991 | else if (macro_mri | |
992 | && in->ptr[src] == '=' | |
993 | && src + 1 < in->len | |
994 | && in->ptr[src + 1] == '=') | |
995 | { | |
996 | formal_entry *ptr; | |
997 | ||
998 | sb_reset (&t); | |
999 | src = get_token (src + 2, in, &t); | |
bdcc1de1 | 1000 | ptr = str_hash_find (formal_hash, sb_terminate (&t)); |
252b5132 RH |
1001 | if (ptr == NULL) |
1002 | { | |
1003 | /* FIXME: We should really return a warning string here, | |
4c665b71 RM |
1004 | but we can't, because the == might be in the MRI |
1005 | comment field, and, since the nature of the MRI | |
1006 | comment field depends upon the exact instruction | |
1007 | being used, we don't have enough information here to | |
1008 | figure out whether it is or not. Instead, we leave | |
1009 | the == in place, which should cause a syntax error if | |
1010 | it is not in a comment. */ | |
252b5132 RH |
1011 | sb_add_char (out, '='); |
1012 | sb_add_char (out, '='); | |
1013 | sb_add_sb (out, &t); | |
1014 | } | |
1015 | else | |
1016 | { | |
1017 | if (ptr->actual.len) | |
1018 | { | |
1019 | sb_add_string (out, "-1"); | |
1020 | } | |
1021 | else | |
1022 | { | |
1023 | sb_add_char (out, '0'); | |
1024 | } | |
1025 | } | |
1026 | } | |
1027 | else | |
1028 | { | |
02ddf156 JB |
1029 | if (in->ptr[src] == '\n') |
1030 | ++macro_line; | |
252b5132 RH |
1031 | sb_add_char (out, in->ptr[src++]); |
1032 | } | |
1033 | } | |
1034 | ||
1035 | sb_kill (&t); | |
1036 | ||
1037 | while (loclist != NULL) | |
1038 | { | |
1039 | formal_entry *f; | |
818236e5 | 1040 | const char *name; |
252b5132 RH |
1041 | |
1042 | f = loclist->next; | |
818236e5 | 1043 | name = sb_terminate (&loclist->name); |
bdcc1de1 | 1044 | str_hash_delete (formal_hash, name); |
6eaeac8a | 1045 | del_formal (loclist); |
252b5132 RH |
1046 | loclist = f; |
1047 | } | |
1048 | ||
02ddf156 | 1049 | return err; |
252b5132 RH |
1050 | } |
1051 | ||
1052 | /* Assign values to the formal parameters of a macro, and expand the | |
1053 | body. */ | |
1054 | ||
1055 | static const char * | |
39a45edc | 1056 | macro_expand (size_t idx, sb *in, macro_entry *m, sb *out) |
252b5132 RH |
1057 | { |
1058 | sb t; | |
1059 | formal_entry *ptr; | |
1060 | formal_entry *f; | |
252b5132 RH |
1061 | int is_keyword = 0; |
1062 | int narg = 0; | |
6eaeac8a | 1063 | const char *err = NULL; |
252b5132 RH |
1064 | |
1065 | sb_new (&t); | |
29f8404c KH |
1066 | |
1067 | /* Reset any old value the actuals may have. */ | |
252b5132 | 1068 | for (f = m->formals; f; f = f->next) |
29f8404c | 1069 | sb_reset (&f->actual); |
252b5132 RH |
1070 | f = m->formals; |
1071 | while (f != NULL && f->index < 0) | |
1072 | f = f->next; | |
1073 | ||
1074 | if (macro_mri) | |
1075 | { | |
1076 | /* The macro may be called with an optional qualifier, which may | |
4c665b71 | 1077 | be referred to in the macro body as \0. */ |
252b5132 | 1078 | if (idx < in->len && in->ptr[idx] == '.') |
d1a6c242 KH |
1079 | { |
1080 | /* The Microtec assembler ignores this if followed by a white space. | |
1081 | (Macro invocation with empty extension) */ | |
1082 | idx++; | |
1083 | if ( idx < in->len | |
1084 | && in->ptr[idx] != ' ' | |
1085 | && in->ptr[idx] != '\t') | |
1086 | { | |
6eaeac8a | 1087 | formal_entry *n = new_formal (); |
d1a6c242 | 1088 | |
d1a6c242 KH |
1089 | n->index = QUAL_INDEX; |
1090 | ||
1091 | n->next = m->formals; | |
1092 | m->formals = n; | |
1093 | ||
be03cc84 | 1094 | idx = get_any_string (idx, in, &n->actual); |
d1a6c242 KH |
1095 | } |
1096 | } | |
1097 | } | |
252b5132 | 1098 | |
29f8404c | 1099 | /* Peel off the actuals and store them away in the hash tables' actuals. */ |
252b5132 | 1100 | idx = sb_skip_white (idx, in); |
fea17916 | 1101 | while (idx < in->len) |
252b5132 | 1102 | { |
39a45edc | 1103 | size_t scan; |
252b5132 | 1104 | |
29f8404c | 1105 | /* Look and see if it's a positional or keyword arg. */ |
252b5132 RH |
1106 | scan = idx; |
1107 | while (scan < in->len | |
1108 | && !ISSEP (in->ptr[scan]) | |
1109 | && !(macro_mri && in->ptr[scan] == '\'') | |
1110 | && (!macro_alternate && in->ptr[scan] != '=')) | |
1111 | scan++; | |
1112 | if (scan < in->len && !macro_alternate && in->ptr[scan] == '=') | |
1113 | { | |
1114 | is_keyword = 1; | |
1115 | ||
1116 | /* It's OK to go from positional to keyword. */ | |
1117 | ||
1118 | /* This is a keyword arg, fetch the formal name and | |
29f8404c | 1119 | then the actual stuff. */ |
252b5132 RH |
1120 | sb_reset (&t); |
1121 | idx = get_token (idx, in, &t); | |
1122 | if (in->ptr[idx] != '=') | |
6eaeac8a JB |
1123 | { |
1124 | err = _("confusion in formal parameters"); | |
1125 | break; | |
1126 | } | |
252b5132 | 1127 | |
29f8404c | 1128 | /* Lookup the formal in the macro's list. */ |
bdcc1de1 | 1129 | ptr = str_hash_find (m->formal_hash, sb_terminate (&t)); |
252b5132 | 1130 | if (!ptr) |
c0ba1095 AM |
1131 | { |
1132 | as_bad (_("Parameter named `%s' does not exist for macro `%s'"), | |
1133 | t.ptr, | |
1134 | m->name); | |
1135 | sb_reset (&t); | |
1136 | idx = get_any_string (idx + 1, in, &t); | |
1137 | } | |
252b5132 RH |
1138 | else |
1139 | { | |
29f8404c | 1140 | /* Insert this value into the right place. */ |
6eaeac8a JB |
1141 | if (ptr->actual.len) |
1142 | { | |
1143 | as_warn (_("Value for parameter `%s' of macro `%s' was already specified"), | |
1144 | ptr->name.ptr, | |
1145 | m->name); | |
1146 | sb_reset (&ptr->actual); | |
1147 | } | |
be03cc84 | 1148 | idx = get_any_string (idx + 1, in, &ptr->actual); |
252b5132 RH |
1149 | if (ptr->actual.len > 0) |
1150 | ++narg; | |
1151 | } | |
1152 | } | |
1153 | else | |
1154 | { | |
252b5132 | 1155 | if (is_keyword) |
6eaeac8a JB |
1156 | { |
1157 | err = _("can't mix positional and keyword arguments"); | |
1158 | break; | |
1159 | } | |
252b5132 RH |
1160 | |
1161 | if (!f) | |
1162 | { | |
1163 | formal_entry **pf; | |
1164 | int c; | |
1165 | ||
1166 | if (!macro_mri) | |
6eaeac8a JB |
1167 | { |
1168 | err = _("too many positional arguments"); | |
1169 | break; | |
1170 | } | |
252b5132 | 1171 | |
6eaeac8a | 1172 | f = new_formal (); |
252b5132 RH |
1173 | |
1174 | c = -1; | |
1175 | for (pf = &m->formals; *pf != NULL; pf = &(*pf)->next) | |
1176 | if ((*pf)->index >= c) | |
1177 | c = (*pf)->index + 1; | |
1178 | if (c == -1) | |
1179 | c = 0; | |
1180 | *pf = f; | |
1181 | f->index = c; | |
1182 | } | |
1183 | ||
6eaeac8a | 1184 | if (f->type != FORMAL_VARARG) |
be03cc84 | 1185 | idx = get_any_string (idx, in, &f->actual); |
6eaeac8a JB |
1186 | else |
1187 | { | |
1188 | sb_add_buffer (&f->actual, in->ptr + idx, in->len - idx); | |
1189 | idx = in->len; | |
1190 | } | |
252b5132 RH |
1191 | if (f->actual.len > 0) |
1192 | ++narg; | |
1193 | do | |
1194 | { | |
1195 | f = f->next; | |
1196 | } | |
1197 | while (f != NULL && f->index < 0); | |
1198 | } | |
1199 | ||
1200 | if (! macro_mri) | |
1201 | idx = sb_skip_comma (idx, in); | |
1202 | else | |
1203 | { | |
1204 | if (in->ptr[idx] == ',') | |
1205 | ++idx; | |
1206 | if (ISWHITE (in->ptr[idx])) | |
1207 | break; | |
1208 | } | |
1209 | } | |
1210 | ||
6eaeac8a | 1211 | if (! err) |
252b5132 | 1212 | { |
6eaeac8a JB |
1213 | for (ptr = m->formals; ptr; ptr = ptr->next) |
1214 | { | |
1215 | if (ptr->type == FORMAL_REQUIRED && ptr->actual.len == 0) | |
1216 | as_bad (_("Missing value for required parameter `%s' of macro `%s'"), | |
1217 | ptr->name.ptr, | |
1218 | m->name); | |
1219 | } | |
252b5132 | 1220 | |
6eaeac8a JB |
1221 | if (macro_mri) |
1222 | { | |
1223 | char buffer[20]; | |
1224 | ||
1225 | sb_reset (&t); | |
1226 | sb_add_string (&t, macro_strip_at ? "$NARG" : "NARG"); | |
bdcc1de1 | 1227 | ptr = str_hash_find (m->formal_hash, sb_terminate (&t)); |
6eaeac8a JB |
1228 | sprintf (buffer, "%d", narg); |
1229 | sb_add_string (&ptr->actual, buffer); | |
1230 | } | |
1231 | ||
1232 | err = macro_expand_body (&m->sub, out, m->formals, m->formal_hash, m); | |
1233 | } | |
252b5132 RH |
1234 | |
1235 | /* Discard any unnamed formal arguments. */ | |
1236 | if (macro_mri) | |
1237 | { | |
1238 | formal_entry **pf; | |
1239 | ||
1240 | pf = &m->formals; | |
1241 | while (*pf != NULL) | |
1242 | { | |
1243 | if ((*pf)->name.len != 0) | |
1244 | pf = &(*pf)->next; | |
1245 | else | |
1246 | { | |
252b5132 | 1247 | f = (*pf)->next; |
6eaeac8a | 1248 | del_formal (*pf); |
252b5132 RH |
1249 | *pf = f; |
1250 | } | |
1251 | } | |
1252 | } | |
1253 | ||
1254 | sb_kill (&t); | |
02ddf156 JB |
1255 | if (!err) |
1256 | macro_number++; | |
252b5132 | 1257 | |
02ddf156 | 1258 | return err; |
252b5132 RH |
1259 | } |
1260 | ||
1261 | /* Check for a macro. If one is found, put the expansion into | |
fea17916 | 1262 | *EXPAND. Return 1 if a macro is found, 0 otherwise. */ |
252b5132 RH |
1263 | |
1264 | int | |
254d758c KH |
1265 | check_macro (const char *line, sb *expand, |
1266 | const char **error, macro_entry **info) | |
252b5132 RH |
1267 | { |
1268 | const char *s; | |
91d6fa6a | 1269 | char *copy, *cls; |
252b5132 RH |
1270 | macro_entry *macro; |
1271 | sb line_sb; | |
1272 | ||
5e75c3ab | 1273 | if (! is_name_beginner (*line) |
252b5132 RH |
1274 | && (! macro_mri || *line != '.')) |
1275 | return 0; | |
1276 | ||
1277 | s = line + 1; | |
5e75c3ab JB |
1278 | while (is_part_of_name (*s)) |
1279 | ++s; | |
1280 | if (is_name_ender (*s)) | |
252b5132 RH |
1281 | ++s; |
1282 | ||
29a2809e | 1283 | copy = xmemdup0 (line, s - line); |
91d6fa6a NC |
1284 | for (cls = copy; *cls != '\0'; cls ++) |
1285 | *cls = TOLOWER (*cls); | |
252b5132 | 1286 | |
bdcc1de1 | 1287 | macro = str_hash_find (macro_hash, copy); |
e1fa0163 | 1288 | free (copy); |
252b5132 RH |
1289 | |
1290 | if (macro == NULL) | |
1291 | return 0; | |
1292 | ||
1293 | /* Wrap the line up in an sb. */ | |
1294 | sb_new (&line_sb); | |
1295 | while (*s != '\0' && *s != '\n' && *s != '\r') | |
1296 | sb_add_char (&line_sb, *s++); | |
1297 | ||
1298 | sb_new (expand); | |
fea17916 | 1299 | *error = macro_expand (0, &line_sb, macro, expand); |
252b5132 RH |
1300 | |
1301 | sb_kill (&line_sb); | |
1302 | ||
29f8404c | 1303 | /* Export the macro information if requested. */ |
9f10757c TW |
1304 | if (info) |
1305 | *info = macro; | |
1306 | ||
252b5132 RH |
1307 | return 1; |
1308 | } | |
1309 | ||
1310 | /* Delete a macro. */ | |
1311 | ||
1312 | void | |
254d758c | 1313 | delete_macro (const char *name) |
252b5132 | 1314 | { |
e6ca91be JB |
1315 | char *copy; |
1316 | size_t i, len; | |
bdcc1de1 | 1317 | macro_entry *macro; |
e6ca91be JB |
1318 | |
1319 | len = strlen (name); | |
add39d23 | 1320 | copy = XNEWVEC (char, len + 1); |
e6ca91be JB |
1321 | for (i = 0; i < len; ++i) |
1322 | copy[i] = TOLOWER (name[i]); | |
1323 | copy[i] = '\0'; | |
1324 | ||
bdcc1de1 AM |
1325 | macro = str_hash_find (macro_hash, copy); |
1326 | if (macro != NULL) | |
e6ca91be | 1327 | { |
bdcc1de1 AM |
1328 | free_macro (macro); |
1329 | str_hash_delete (macro_hash, copy); | |
e6ca91be JB |
1330 | } |
1331 | else | |
33eaf5de | 1332 | as_warn (_("Attempt to purge non-existing macro `%s'"), copy); |
fe0e921f | 1333 | free (copy); |
252b5132 RH |
1334 | } |
1335 | ||
1336 | /* Handle the MRI IRP and IRPC pseudo-ops. These are handled as a | |
1337 | combined macro definition and execution. This returns NULL on | |
1338 | success, or an error message otherwise. */ | |
1339 | ||
1340 | const char * | |
39a45edc | 1341 | expand_irp (int irpc, size_t idx, sb *in, sb *out, size_t (*get_line) (sb *)) |
252b5132 | 1342 | { |
252b5132 RH |
1343 | sb sub; |
1344 | formal_entry f; | |
2b272f44 ML |
1345 | struct htab *h; |
1346 | const char *err = NULL; | |
252b5132 | 1347 | |
252b5132 RH |
1348 | idx = sb_skip_white (idx, in); |
1349 | ||
1350 | sb_new (&sub); | |
ca3bc58f | 1351 | if (! buffer_and_nest (NULL, "ENDR", &sub, get_line)) |
252b5132 | 1352 | return _("unexpected end of file in irp or irpc"); |
29f8404c | 1353 | |
252b5132 RH |
1354 | sb_new (&f.name); |
1355 | sb_new (&f.def); | |
1356 | sb_new (&f.actual); | |
1357 | ||
1358 | idx = get_token (idx, in, &f.name); | |
1359 | if (f.name.len == 0) | |
1360 | return _("missing model parameter"); | |
1361 | ||
bdcc1de1 | 1362 | h = str_htab_create (); |
2b272f44 | 1363 | |
bdcc1de1 | 1364 | str_hash_insert (h, sb_terminate (&f.name), &f, 0); |
252b5132 RH |
1365 | |
1366 | f.index = 1; | |
1367 | f.next = NULL; | |
6eaeac8a | 1368 | f.type = FORMAL_OPTIONAL; |
252b5132 RH |
1369 | |
1370 | sb_reset (out); | |
1371 | ||
1372 | idx = sb_skip_comma (idx, in); | |
fea17916 | 1373 | if (idx >= in->len) |
252b5132 RH |
1374 | { |
1375 | /* Expand once with a null string. */ | |
fea17916 | 1376 | err = macro_expand_body (&sub, out, &f, h, 0); |
252b5132 RH |
1377 | } |
1378 | else | |
1379 | { | |
5b7c81bd | 1380 | bool in_quotes = false; |
465e5617 | 1381 | |
252b5132 | 1382 | if (irpc && in->ptr[idx] == '"') |
465e5617 | 1383 | { |
5b7c81bd | 1384 | in_quotes = true; |
465e5617 NC |
1385 | ++idx; |
1386 | } | |
1387 | ||
fea17916 | 1388 | while (idx < in->len) |
252b5132 RH |
1389 | { |
1390 | if (!irpc) | |
be03cc84 | 1391 | idx = get_any_string (idx, in, &f.actual); |
252b5132 RH |
1392 | else |
1393 | { | |
1394 | if (in->ptr[idx] == '"') | |
1395 | { | |
39a45edc | 1396 | size_t nxt; |
252b5132 | 1397 | |
465e5617 NC |
1398 | if (irpc) |
1399 | in_quotes = ! in_quotes; | |
4c665b71 | 1400 | |
252b5132 | 1401 | nxt = sb_skip_white (idx + 1, in); |
fea17916 | 1402 | if (nxt >= in->len) |
252b5132 RH |
1403 | { |
1404 | idx = nxt; | |
1405 | break; | |
1406 | } | |
1407 | } | |
1408 | sb_reset (&f.actual); | |
1409 | sb_add_char (&f.actual, in->ptr[idx]); | |
1410 | ++idx; | |
1411 | } | |
465e5617 | 1412 | |
fea17916 | 1413 | err = macro_expand_body (&sub, out, &f, h, 0); |
252b5132 | 1414 | if (err != NULL) |
02ddf156 | 1415 | break; |
252b5132 RH |
1416 | if (!irpc) |
1417 | idx = sb_skip_comma (idx, in); | |
465e5617 | 1418 | else if (! in_quotes) |
252b5132 RH |
1419 | idx = sb_skip_white (idx, in); |
1420 | } | |
1421 | } | |
1422 | ||
2b272f44 | 1423 | htab_delete (h); |
6eaeac8a JB |
1424 | sb_kill (&f.actual); |
1425 | sb_kill (&f.def); | |
1426 | sb_kill (&f.name); | |
252b5132 RH |
1427 | sb_kill (&sub); |
1428 | ||
02ddf156 | 1429 | return err; |
252b5132 | 1430 | } |