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af9e4a0c | 1 | /* Generate code to initialize optabs from machine description. |
34627ce6 | 2 | Copyright (C) 1993, 94-98, 1999 Free Software Foundation, Inc. |
af9e4a0c RK |
3 | |
4 | This file is part of GNU CC. | |
5 | ||
6 | GNU CC is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2, or (at your option) | |
9 | any later version. | |
10 | ||
11 | GNU CC is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with GNU CC; see the file COPYING. If not, write to | |
a35311b0 RK |
18 | the Free Software Foundation, 59 Temple Place - Suite 330, |
19 | Boston, MA 02111-1307, USA. */ | |
af9e4a0c RK |
20 | |
21 | ||
af9e4a0c | 22 | #include "hconfig.h" |
0b93b64e | 23 | #include "system.h" |
af9e4a0c RK |
24 | #include "rtl.h" |
25 | #include "obstack.h" | |
f8b6598e | 26 | #include "errors.h" |
ccd043a9 | 27 | |
af9e4a0c RK |
28 | static struct obstack obstack; |
29 | struct obstack *rtl_obstack = &obstack; | |
30 | ||
31 | #define obstack_chunk_alloc xmalloc | |
32 | #define obstack_chunk_free free | |
33 | ||
af9e4a0c RK |
34 | /* Many parts of GCC use arrays that are indexed by machine mode and |
35 | contain the insn codes for pattern in the MD file that perform a given | |
36 | operation on operands of that mode. | |
37 | ||
38 | These patterns are present in the MD file with names that contain | |
39 | the mode(s) used and the name of the operation. This program | |
40 | writes a function `init_all_optabs' that initializes the optabs with | |
41 | all the insn codes of the relevant patterns present in the MD file. | |
42 | ||
43 | This array contains a list of optabs that need to be initialized. Within | |
44 | each string, the name of the pattern to be matched against is delimited | |
45 | with %( and %). In the string, %a and %b are used to match a short mode | |
46 | name (the part of the mode name not including `mode' and converted to | |
47 | lower-case). When writing out the initializer, the entire string is | |
48 | used. %A and %B are replaced with the full name of the mode; %a and %b | |
49 | are replaced with the short form of the name, as above. | |
50 | ||
51 | If %N is present in the pattern, it means the two modes must be consecutive | |
52 | widths in the same mode class (e.g, QImode and HImode). %I means that | |
53 | only integer modes should be considered for the next mode, and %F means | |
54 | that only float modes should be considered. | |
55 | ||
56 | For some optabs, we store the operation by RTL codes. These are only | |
57 | used for comparisons. In that case, %c and %C are the lower-case and | |
58 | upper-case forms of the comparison, respectively. */ | |
59 | ||
8c9881d1 RS |
60 | /* The reason we use \% is to avoid sequences of the form %-capletter-% |
61 | which SCCS treats as magic. This gets warnings which you should ignore. */ | |
62 | ||
c1b59dce | 63 | const char * const optabs[] = |
8c9881d1 RS |
64 | { "extendtab[(int) %B][(int) %A][0] = CODE_FOR_%(extend%a\%b2%)", |
65 | "extendtab[(int) %B][(int) %A][1] = CODE_FOR_%(zero_extend%a\%b2%)", | |
66 | "fixtab[(int) %A][(int) %B][0] = CODE_FOR_%(fix%F\%a%I\%b2%)", | |
67 | "fixtab[(int) %A][(int) %B][1] = CODE_FOR_%(fixuns%F\%a%b2%)", | |
68 | "fixtrunctab[(int) %A][(int) %B][0] = CODE_FOR_%(fix_trunc%F\%a%I\%b2%)", | |
69 | "fixtrunctab[(int) %A][(int) %B][1] = CODE_FOR_%(fixuns_trunc%F\%a%I\%b2%)", | |
70 | "floattab[(int) %B][(int) %A][0] = CODE_FOR_%(float%I\%a%F\%b2%)", | |
53f26922 | 71 | "floattab[(int) %B][(int) %A][1] = CODE_FOR_%(floatuns%I\%a%F\%b2%)", |
af9e4a0c RK |
72 | "add_optab->handlers[(int) %A].insn_code = CODE_FOR_%(add%a3%)", |
73 | "sub_optab->handlers[(int) %A].insn_code = CODE_FOR_%(sub%a3%)", | |
74 | "smul_optab->handlers[(int) %A].insn_code = CODE_FOR_%(mul%a3%)", | |
af309004 TG |
75 | "umul_highpart_optab->handlers[(int) %A].insn_code = CODE_FOR_%(umul%a3_highpart%)", |
76 | "smul_highpart_optab->handlers[(int) %A].insn_code = CODE_FOR_%(smul%a3_highpart%)", | |
af9e4a0c RK |
77 | "smul_widen_optab->handlers[(int) %B].insn_code = CODE_FOR_%(mul%a%b3%)%N", |
78 | "umul_widen_optab->handlers[(int) %B].insn_code = CODE_FOR_%(umul%a%b3%)%N", | |
8c9881d1 RS |
79 | "sdiv_optab->handlers[(int) %A].insn_code = CODE_FOR_%(div%I\%a3%)", |
80 | "udiv_optab->handlers[(int) %A].insn_code = CODE_FOR_%(udiv%I\%a3%)", | |
af9e4a0c RK |
81 | "sdivmod_optab->handlers[(int) %A].insn_code = CODE_FOR_%(divmod%a4%)", |
82 | "udivmod_optab->handlers[(int) %A].insn_code = CODE_FOR_%(udivmod%a4%)", | |
83 | "smod_optab->handlers[(int) %A].insn_code = CODE_FOR_%(mod%a3%)", | |
84 | "umod_optab->handlers[(int) %A].insn_code = CODE_FOR_%(umod%a3%)", | |
8c9881d1 RS |
85 | "flodiv_optab->handlers[(int) %A].insn_code = CODE_FOR_%(div%F\%a3%)", |
86 | "ftrunc_optab->handlers[(int) %A].insn_code = CODE_FOR_%(ftrunc%F\%a2%)", | |
af9e4a0c RK |
87 | "and_optab->handlers[(int) %A].insn_code = CODE_FOR_%(and%a3%)", |
88 | "ior_optab->handlers[(int) %A].insn_code = CODE_FOR_%(ior%a3%)", | |
89 | "xor_optab->handlers[(int) %A].insn_code = CODE_FOR_%(xor%a3%)", | |
90 | "ashl_optab->handlers[(int) %A].insn_code = CODE_FOR_%(ashl%a3%)", | |
91 | "ashr_optab->handlers[(int) %A].insn_code = CODE_FOR_%(ashr%a3%)", | |
af9e4a0c RK |
92 | "lshr_optab->handlers[(int) %A].insn_code = CODE_FOR_%(lshr%a3%)", |
93 | "rotl_optab->handlers[(int) %A].insn_code = CODE_FOR_%(rotl%a3%)", | |
94 | "rotr_optab->handlers[(int) %A].insn_code = CODE_FOR_%(rotr%a3%)", | |
8c9881d1 RS |
95 | "smin_optab->handlers[(int) %A].insn_code = CODE_FOR_%(smin%I\%a3%)", |
96 | "smin_optab->handlers[(int) %A].insn_code = CODE_FOR_%(min%F\%a3%)", | |
97 | "smax_optab->handlers[(int) %A].insn_code = CODE_FOR_%(smax%I\%a3%)", | |
98 | "smax_optab->handlers[(int) %A].insn_code = CODE_FOR_%(max%F\%a3%)", | |
99 | "umin_optab->handlers[(int) %A].insn_code = CODE_FOR_%(umin%I\%a3%)", | |
100 | "umax_optab->handlers[(int) %A].insn_code = CODE_FOR_%(umax%I\%a3%)", | |
af9e4a0c RK |
101 | "neg_optab->handlers[(int) %A].insn_code = CODE_FOR_%(neg%a2%)", |
102 | "abs_optab->handlers[(int) %A].insn_code = CODE_FOR_%(abs%a2%)", | |
103 | "sqrt_optab->handlers[(int) %A].insn_code = CODE_FOR_%(sqrt%a2%)", | |
104 | "sin_optab->handlers[(int) %A].insn_code = CODE_FOR_%(sin%a2%)", | |
105 | "cos_optab->handlers[(int) %A].insn_code = CODE_FOR_%(cos%a2%)", | |
ed58a128 | 106 | "strlen_optab->handlers[(int) %A].insn_code = CODE_FOR_%(strlen%a%)", |
af9e4a0c RK |
107 | "one_cmpl_optab->handlers[(int) %A].insn_code = CODE_FOR_%(one_cmpl%a2%)", |
108 | "ffs_optab->handlers[(int) %A].insn_code = CODE_FOR_%(ffs%a2%)", | |
109 | "mov_optab->handlers[(int) %A].insn_code = CODE_FOR_%(mov%a%)", | |
110 | "movstrict_optab->handlers[(int) %A].insn_code = CODE_FOR_%(movstrict%a%)", | |
111 | "cmp_optab->handlers[(int) %A].insn_code = CODE_FOR_%(cmp%a%)", | |
112 | "tst_optab->handlers[(int) %A].insn_code = CODE_FOR_%(tst%a%)", | |
113 | "bcc_gen_fctn[(int) %C] = gen_%(b%c%)", | |
114 | "setcc_gen_code[(int) %C] = CODE_FOR_%(s%c%)", | |
3c9958cd | 115 | "movcc_gen_code[(int) %A] = CODE_FOR_%(mov%acc%)", |
af9e4a0c RK |
116 | "reload_in_optab[(int) %A] = CODE_FOR_%(reload_in%a%)", |
117 | "reload_out_optab[(int) %A] = CODE_FOR_%(reload_out%a%)", | |
fd18db65 RK |
118 | "movstr_optab[(int) %A] = CODE_FOR_%(movstr%a%)", |
119 | "clrstr_optab[(int) %A] = CODE_FOR_%(clrstr%a%)" }; | |
af9e4a0c | 120 | |
56c0e996 BS |
121 | static void gen_insn PROTO((rtx)); |
122 | ||
af9e4a0c RK |
123 | static void |
124 | gen_insn (insn) | |
125 | rtx insn; | |
126 | { | |
127 | char *name = XSTR (insn, 0); | |
128 | int m1, m2, op; | |
5ae9a7e9 | 129 | size_t pindex; |
af9e4a0c | 130 | int i; |
85fda1eb | 131 | const char *np, *pp, *p, *q; |
af9e4a0c RK |
132 | |
133 | /* Don't mention instructions whose names are the null string. | |
134 | They are in the machine description just to be recognized. */ | |
135 | if (*name == 0) | |
136 | return; | |
137 | ||
138 | /* See if NAME matches one of the patterns we have for the optabs we know | |
139 | about. */ | |
140 | ||
141 | for (pindex = 0; pindex < sizeof optabs / sizeof optabs[0]; pindex++) | |
142 | { | |
143 | int force_float = 0, force_int = 0; | |
144 | int force_consec = 0; | |
145 | int matches = 1; | |
146 | ||
147 | for (pp = optabs[pindex]; pp[0] != '%' || pp[1] != '('; pp++) | |
148 | ; | |
149 | ||
150 | for (pp += 2, np = name; matches && ! (pp[0] == '%' && pp[1] == ')'); | |
151 | pp++) | |
152 | { | |
153 | if (*pp != '%') | |
154 | { | |
155 | if (*pp != *np++) | |
156 | break; | |
157 | } | |
158 | else | |
159 | switch (*++pp) | |
160 | { | |
161 | case 'N': | |
162 | force_consec = 1; | |
163 | break; | |
164 | case 'I': | |
165 | force_int = 1; | |
166 | break; | |
167 | case 'F': | |
168 | force_float = 1; | |
169 | break; | |
170 | case 'c': | |
171 | for (op = 0; op < NUM_RTX_CODE; op++) | |
172 | { | |
5f06c983 | 173 | for (p = GET_RTX_NAME(op), q = np; *p; p++, q++) |
af9e4a0c RK |
174 | if (*p != *q) |
175 | break; | |
176 | ||
177 | /* We have to be concerned about matching "gt" and | |
178 | missing "gtu", e.g., so verify we have reached the | |
4639555c | 179 | end of thing we are to match. */ |
1f9a015e | 180 | if (*p == 0 && *q == 0 && GET_RTX_CLASS(op) == '<') |
af9e4a0c RK |
181 | break; |
182 | } | |
183 | ||
184 | if (op == NUM_RTX_CODE) | |
185 | matches = 0; | |
186 | else | |
5f06c983 | 187 | np += strlen (GET_RTX_NAME(op)); |
af9e4a0c RK |
188 | break; |
189 | case 'a': | |
190 | case 'b': | |
4639555c ILT |
191 | /* This loop will stop at the first prefix match, so |
192 | look through the modes in reverse order, in case | |
193 | EXTRA_CC_MODES was used and CC is a prefix of the | |
194 | CC modes (as it should be). */ | |
195 | for (i = ((int) MAX_MACHINE_MODE) - 1; i >= 0; i--) | |
af9e4a0c | 196 | { |
a4ec8d12 | 197 | for (p = GET_MODE_NAME(i), q = np; *p; p++, q++) |
79c9824e | 198 | if (tolower ((unsigned char)*p) != *q) |
af9e4a0c RK |
199 | break; |
200 | ||
201 | if (*p == 0 | |
202 | && (! force_int || mode_class[i] == MODE_INT) | |
203 | && (! force_float || mode_class[i] == MODE_FLOAT)) | |
204 | break; | |
205 | } | |
206 | ||
4639555c | 207 | if (i < 0) |
af9e4a0c RK |
208 | matches = 0; |
209 | else if (*pp == 'a') | |
a4ec8d12 | 210 | m1 = i, np += strlen (GET_MODE_NAME(i)); |
af9e4a0c | 211 | else |
a4ec8d12 | 212 | m2 = i, np += strlen (GET_MODE_NAME(i)); |
af9e4a0c RK |
213 | |
214 | force_int = force_float = 0; | |
215 | break; | |
216 | ||
217 | default: | |
218 | abort (); | |
219 | } | |
220 | } | |
221 | ||
222 | if (matches && pp[0] == '%' && pp[1] == ')' | |
223 | && *np == 0 | |
88a5e9da | 224 | && (! force_consec || (int) GET_MODE_WIDER_MODE(m1) == m2)) |
af9e4a0c RK |
225 | break; |
226 | } | |
227 | ||
228 | if (pindex == sizeof optabs / sizeof optabs[0]) | |
229 | return; | |
230 | ||
231 | /* We found a match. If this pattern is only conditionally present, | |
232 | write out the "if" and two extra blanks. */ | |
233 | ||
234 | if (*XSTR (insn, 2) != 0) | |
235 | printf (" if (HAVE_%s)\n ", name); | |
236 | ||
237 | printf (" "); | |
238 | ||
239 | /* Now write out the initialization, making all required substitutions. */ | |
240 | for (pp = optabs[pindex]; *pp; pp++) | |
241 | { | |
242 | if (*pp != '%') | |
243 | printf ("%c", *pp); | |
244 | else | |
245 | switch (*++pp) | |
246 | { | |
247 | case '(': case ')': | |
248 | case 'I': case 'F': case 'N': | |
249 | break; | |
250 | case 'a': | |
a4ec8d12 | 251 | for (np = GET_MODE_NAME(m1); *np; np++) |
79c9824e | 252 | printf ("%c", tolower ((unsigned char)*np)); |
af9e4a0c RK |
253 | break; |
254 | case 'b': | |
a4ec8d12 | 255 | for (np = GET_MODE_NAME(m2); *np; np++) |
79c9824e | 256 | printf ("%c", tolower ((unsigned char)*np)); |
af9e4a0c RK |
257 | break; |
258 | case 'A': | |
a4ec8d12 | 259 | printf ("%smode", GET_MODE_NAME(m1)); |
af9e4a0c RK |
260 | break; |
261 | case 'B': | |
a4ec8d12 | 262 | printf ("%smode", GET_MODE_NAME(m2)); |
af9e4a0c RK |
263 | break; |
264 | case 'c': | |
5f06c983 | 265 | printf ("%s", GET_RTX_NAME(op)); |
af9e4a0c RK |
266 | break; |
267 | case 'C': | |
5f06c983 | 268 | for (np = GET_RTX_NAME(op); *np; np++) |
79c9824e | 269 | printf ("%c", toupper ((unsigned char)*np)); |
af9e4a0c RK |
270 | break; |
271 | } | |
272 | } | |
273 | ||
274 | printf (";\n"); | |
275 | } | |
276 | \f | |
2778b98d | 277 | PTR |
af9e4a0c | 278 | xmalloc (size) |
2778b98d | 279 | size_t size; |
af9e4a0c | 280 | { |
2778b98d | 281 | register PTR val = (PTR) malloc (size); |
af9e4a0c RK |
282 | |
283 | if (val == 0) | |
284 | fatal ("virtual memory exhausted"); | |
285 | ||
286 | return val; | |
287 | } | |
288 | ||
2778b98d | 289 | PTR |
470b68c0 RH |
290 | xrealloc (old, size) |
291 | PTR old; | |
2778b98d | 292 | size_t size; |
af9e4a0c | 293 | { |
470b68c0 | 294 | register PTR ptr; |
09d83d25 | 295 | if (old) |
470b68c0 RH |
296 | ptr = (PTR) realloc (old, size); |
297 | else | |
298 | ptr = (PTR) malloc (size); | |
299 | if (!ptr) | |
af9e4a0c | 300 | fatal ("virtual memory exhausted"); |
470b68c0 | 301 | return ptr; |
af9e4a0c RK |
302 | } |
303 | ||
c1b59dce KG |
304 | extern int main PROTO ((int, char **)); |
305 | ||
af9e4a0c RK |
306 | int |
307 | main (argc, argv) | |
308 | int argc; | |
309 | char **argv; | |
310 | { | |
311 | rtx desc; | |
af9e4a0c RK |
312 | FILE *infile; |
313 | register int c; | |
314 | ||
f8b6598e | 315 | progname = "genopinit"; |
af9e4a0c RK |
316 | obstack_init (rtl_obstack); |
317 | ||
318 | if (argc <= 1) | |
319 | fatal ("No input file name."); | |
320 | ||
321 | infile = fopen (argv[1], "r"); | |
322 | if (infile == 0) | |
323 | { | |
324 | perror (argv[1]); | |
c1b59dce | 325 | return (FATAL_EXIT_CODE); |
af9e4a0c RK |
326 | } |
327 | ||
af9e4a0c RK |
328 | printf ("/* Generated automatically by the program `genopinit'\n\ |
329 | from the machine description file `md'. */\n\n"); | |
330 | ||
331 | printf ("#include \"config.h\"\n"); | |
729da3f5 | 332 | printf ("#include \"system.h\"\n"); |
af9e4a0c RK |
333 | printf ("#include \"rtl.h\"\n"); |
334 | printf ("#include \"flags.h\"\n"); | |
335 | printf ("#include \"insn-flags.h\"\n"); | |
336 | printf ("#include \"insn-codes.h\"\n"); | |
337 | printf ("#include \"insn-config.h\"\n"); | |
338 | printf ("#include \"recog.h\"\n"); | |
339 | printf ("#include \"expr.h\"\n"); | |
340 | printf ("#include \"reload.h\"\n\n"); | |
341 | ||
342 | printf ("void\ninit_all_optabs ()\n{\n"); | |
343 | ||
344 | /* Read the machine description. */ | |
345 | ||
346 | while (1) | |
347 | { | |
348 | c = read_skip_spaces (infile); | |
349 | if (c == EOF) | |
350 | break; | |
351 | ungetc (c, infile); | |
352 | ||
353 | desc = read_rtx (infile); | |
354 | if (GET_CODE (desc) == DEFINE_INSN || GET_CODE (desc) == DEFINE_EXPAND) | |
355 | gen_insn (desc); | |
356 | } | |
357 | ||
358 | printf ("}\n"); | |
359 | ||
360 | fflush (stdout); | |
c1b59dce | 361 | return (ferror (stdout) != 0 ? FATAL_EXIT_CODE : SUCCESS_EXIT_CODE); |
af9e4a0c | 362 | } |
a995e389 RH |
363 | |
364 | /* Define this so we can link with print-rtl.o to get debug_rtx function. */ | |
365 | const char * | |
366 | get_insn_name (code) | |
c1b59dce | 367 | int code ATTRIBUTE_UNUSED; |
a995e389 RH |
368 | { |
369 | return NULL; | |
370 | } |