]>
Commit | Line | Data |
---|---|---|
3b80f6ca | 1 | /* Generate code to allocate RTL structures. |
3d7aafde AJ |
2 | Copyright (C) 1997, 1998, 1999, 2000, 2002, 2003 |
3 | Free Software Foundation, Inc. | |
3b80f6ca | 4 | |
1322177d | 5 | This file is part of GCC. |
3b80f6ca | 6 | |
1322177d LB |
7 | GCC is free software; you can redistribute it and/or modify it under |
8 | the terms of the GNU General Public License as published by the Free | |
9 | Software Foundation; either version 2, or (at your option) any later | |
10 | version. | |
3b80f6ca | 11 | |
1322177d LB |
12 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
13 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
14 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
15 | for more details. | |
3b80f6ca RH |
16 | |
17 | You should have received a copy of the GNU General Public License | |
1322177d LB |
18 | along with GCC; see the file COPYING. If not, write to the Free |
19 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
20 | 02111-1307, USA. */ | |
3b80f6ca RH |
21 | |
22 | ||
4977bab6 | 23 | #include "bconfig.h" |
b04cd507 | 24 | #include "system.h" |
4977bab6 ZW |
25 | #include "coretypes.h" |
26 | #include "tm.h" | |
3b80f6ca | 27 | |
3b80f6ca RH |
28 | #define NO_GENRTL_H |
29 | #include "rtl.h" | |
987009bf | 30 | #undef abort |
3b80f6ca | 31 | |
aa0b4465 ZW |
32 | #include "real.h" |
33 | ||
8f9eb495 | 34 | struct rtx_definition |
3b80f6ca | 35 | { |
8b60264b | 36 | const char *const enumname, *const name, *const format; |
3b80f6ca RH |
37 | }; |
38 | ||
4bc5fbd4 | 39 | #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) { STRINGX(ENUM), NAME, FORMAT }, |
3b80f6ca | 40 | |
8f9eb495 AJ |
41 | static const struct rtx_definition defs[] = |
42 | { | |
3b80f6ca RH |
43 | #include "rtl.def" /* rtl expressions are documented here */ |
44 | }; | |
45 | ||
0b5826ac | 46 | static const char *formats[NUM_RTX_CODE]; |
3b80f6ca | 47 | |
3d7aafde AJ |
48 | static const char *type_from_format (int); |
49 | static const char *accessor_from_format (int); | |
50 | static int special_format (const char *); | |
51 | static int special_rtx (int); | |
52 | static int excluded_rtx (int); | |
53 | static void find_formats (void); | |
54 | static void gendecl (const char *); | |
55 | static void genmacro (int); | |
56 | static void gendef (const char *); | |
57 | static void genlegend (void); | |
58 | static void genheader (void); | |
59 | static void gencode (void); | |
c5c76735 | 60 | \f |
0133b7d9 RH |
61 | /* Decode a format letter into a C type string. */ |
62 | ||
3b80f6ca | 63 | static const char * |
3d7aafde | 64 | type_from_format (int c) |
3b80f6ca RH |
65 | { |
66 | switch (c) | |
67 | { | |
68 | case 'i': | |
c5c76735 JL |
69 | return "int "; |
70 | ||
3b80f6ca | 71 | case 'w': |
c5c76735 JL |
72 | return "HOST_WIDE_INT "; |
73 | ||
3b80f6ca | 74 | case 's': |
3cce094d | 75 | return "const char *"; |
c5c76735 JL |
76 | |
77 | case 'e': case 'u': | |
78 | return "rtx "; | |
79 | ||
3b80f6ca | 80 | case 'E': |
c5c76735 | 81 | return "rtvec "; |
0dfa1860 | 82 | case 'b': |
8f985ec4 | 83 | return "struct bitmap_head_def *"; /* bitmap - typedef not available */ |
0dfa1860 | 84 | case 't': |
8f985ec4 | 85 | return "union tree_node *"; /* tree - typedef not available */ |
c8ea9a0f JH |
86 | case 'B': |
87 | return "struct basic_block_def *"; /* basic block - typedef not available */ | |
3b80f6ca RH |
88 | default: |
89 | abort (); | |
90 | } | |
91 | } | |
92 | ||
0133b7d9 RH |
93 | /* Decode a format letter into the proper accessor function. */ |
94 | ||
3b80f6ca | 95 | static const char * |
3d7aafde | 96 | accessor_from_format (int c) |
3b80f6ca RH |
97 | { |
98 | switch (c) | |
99 | { | |
100 | case 'i': | |
101 | return "XINT"; | |
c5c76735 | 102 | |
3b80f6ca RH |
103 | case 'w': |
104 | return "XWINT"; | |
c5c76735 | 105 | |
3b80f6ca RH |
106 | case 's': |
107 | return "XSTR"; | |
c5c76735 JL |
108 | |
109 | case 'e': case 'u': | |
3b80f6ca | 110 | return "XEXP"; |
c5c76735 | 111 | |
3b80f6ca RH |
112 | case 'E': |
113 | return "XVEC"; | |
c5c76735 | 114 | |
0dfa1860 MM |
115 | case 'b': |
116 | return "XBITMAP"; | |
c5c76735 | 117 | |
0dfa1860 MM |
118 | case 't': |
119 | return "XTREE"; | |
c5c76735 | 120 | |
c8ea9a0f JH |
121 | case 'B': |
122 | return "XBBDEF"; | |
10d1bb36 JH |
123 | |
124 | default: | |
125 | abort (); | |
3b80f6ca RH |
126 | } |
127 | } | |
128 | ||
c5c76735 JL |
129 | /* Return nonzero if we should ignore FMT, an RTL format, when making |
130 | the list of formats we write routines to create. */ | |
0133b7d9 | 131 | |
3b80f6ca | 132 | static int |
3d7aafde | 133 | special_format (const char *fmt) |
3b80f6ca RH |
134 | { |
135 | return (strchr (fmt, '*') != 0 | |
136 | || strchr (fmt, 'V') != 0 | |
137 | || strchr (fmt, 'S') != 0 | |
138 | || strchr (fmt, 'n') != 0); | |
139 | } | |
140 | ||
5692c7bc ZW |
141 | /* Return nonzero if the RTL code given by index IDX is one that we should |
142 | generate a gen_rtx_raw_FOO macro for, not gen_rtx_FOO (because gen_rtx_FOO | |
143 | is a wrapper in emit-rtl.c). */ | |
0133b7d9 | 144 | |
3b80f6ca | 145 | static int |
3d7aafde | 146 | special_rtx (int idx) |
3b80f6ca RH |
147 | { |
148 | return (strcmp (defs[idx].enumname, "CONST_INT") == 0 | |
41472af8 | 149 | || strcmp (defs[idx].enumname, "REG") == 0 |
ddef6bc7 | 150 | || strcmp (defs[idx].enumname, "SUBREG") == 0 |
a06e3c40 R |
151 | || strcmp (defs[idx].enumname, "MEM") == 0 |
152 | || strcmp (defs[idx].enumname, "CONST_VECTOR") == 0); | |
3b80f6ca RH |
153 | } |
154 | ||
5692c7bc ZW |
155 | /* Return nonzero if the RTL code given by index IDX is one that we should |
156 | generate no macro for at all (because gen_rtx_FOO is never used or | |
157 | cannot have the obvious interface). */ | |
158 | ||
159 | static int | |
3d7aafde | 160 | excluded_rtx (int idx) |
5692c7bc ZW |
161 | { |
162 | return (strcmp (defs[idx].enumname, "CONST_DOUBLE") == 0); | |
163 | } | |
164 | ||
dc297297 | 165 | /* Place a list of all format specifiers we use into the array FORMAT. */ |
0133b7d9 | 166 | |
3b80f6ca | 167 | static void |
3d7aafde | 168 | find_formats (void) |
3b80f6ca RH |
169 | { |
170 | int i; | |
171 | ||
c5c76735 | 172 | for (i = 0; i < NUM_RTX_CODE; i++) |
3b80f6ca RH |
173 | { |
174 | const char **f; | |
175 | ||
176 | if (special_format (defs[i].format)) | |
177 | continue; | |
178 | ||
c5c76735 | 179 | for (f = formats; *f; f++) |
0133b7d9 | 180 | if (! strcmp (*f, defs[i].format)) |
3b80f6ca RH |
181 | break; |
182 | ||
c5c76735 | 183 | if (*f == 0) |
3b80f6ca RH |
184 | *f = defs[i].format; |
185 | } | |
186 | } | |
187 | ||
c5c76735 | 188 | /* Write the declarations for the routine to allocate RTL with FORMAT. */ |
0133b7d9 | 189 | |
3b80f6ca | 190 | static void |
3d7aafde | 191 | gendecl (const char *format) |
3b80f6ca RH |
192 | { |
193 | const char *p; | |
c5c76735 | 194 | int i, pos; |
8f9eb495 | 195 | |
3d7aafde | 196 | printf ("extern rtx gen_rtx_fmt_%s\t (RTX_CODE, ", format); |
c5c76735 JL |
197 | printf ("enum machine_mode mode"); |
198 | ||
199 | /* Write each parameter that is needed and start a new line when the line | |
200 | would overflow. */ | |
201 | for (p = format, i = 0, pos = 75; *p != 0; p++) | |
3b80f6ca | 202 | if (*p != '0') |
c5c76735 JL |
203 | { |
204 | int ourlen = strlen (type_from_format (*p)) + 6 + (i > 9); | |
205 | ||
206 | printf (","); | |
207 | if (pos + ourlen > 76) | |
208 | printf ("\n\t\t\t\t "), pos = 39; | |
209 | ||
210 | printf (" %sarg%d", type_from_format (*p), i++); | |
211 | pos += ourlen; | |
212 | } | |
213 | ||
3d7aafde | 214 | printf (");\n"); |
3b80f6ca RH |
215 | } |
216 | ||
c5c76735 JL |
217 | /* Generate macros to generate RTL of code IDX using the functions we |
218 | write. */ | |
0133b7d9 | 219 | |
8f9eb495 | 220 | static void |
3d7aafde | 221 | genmacro (int idx) |
3b80f6ca RH |
222 | { |
223 | const char *p; | |
224 | int i; | |
225 | ||
c5c76735 JL |
226 | /* We write a macro that defines gen_rtx_RTLCODE to be an equivalent to |
227 | gen_rtx_fmt_FORMAT where FORMAT is the RTX_FORMAT of RTLCODE. */ | |
3b80f6ca | 228 | |
5692c7bc ZW |
229 | if (excluded_rtx (idx)) |
230 | /* Don't define a macro for this code. */ | |
231 | return; | |
232 | ||
c5c76735 JL |
233 | printf ("#define gen_rtx_%s%s(MODE", |
234 | special_rtx (idx) ? "raw_" : "", defs[idx].enumname); | |
235 | ||
236 | for (p = defs[idx].format, i = 0; *p != 0; p++) | |
3b80f6ca | 237 | if (*p != '0') |
c5c76735 JL |
238 | printf (", ARG%d", i++); |
239 | ||
240 | printf (") \\\n gen_rtx_fmt_%s (%s, (MODE)", | |
241 | defs[idx].format, defs[idx].enumname); | |
3b80f6ca | 242 | |
c5c76735 | 243 | for (p = defs[idx].format, i = 0; *p != 0; p++) |
3b80f6ca | 244 | if (*p != '0') |
c5c76735 JL |
245 | printf (", (ARG%d)", i++); |
246 | ||
f8a83ee3 | 247 | puts (")"); |
3b80f6ca RH |
248 | } |
249 | ||
c5c76735 JL |
250 | /* Generate the code for the function to generate RTL whose |
251 | format is FORMAT. */ | |
0133b7d9 | 252 | |
3b80f6ca | 253 | static void |
3d7aafde | 254 | gendef (const char *format) |
3b80f6ca RH |
255 | { |
256 | const char *p; | |
257 | int i, j; | |
8f9eb495 | 258 | |
c5c76735 JL |
259 | /* Start by writing the definition of the function name and the types |
260 | of the arguments. */ | |
3b80f6ca | 261 | |
c5c76735 JL |
262 | printf ("rtx\ngen_rtx_fmt_%s (code, mode", format); |
263 | for (p = format, i = 0; *p != 0; p++) | |
3b80f6ca | 264 | if (*p != '0') |
c5c76735 | 265 | printf (", arg%d", i++); |
3b80f6ca | 266 | |
f8a83ee3 | 267 | puts (")\n RTX_CODE code;\n enum machine_mode mode;"); |
c5c76735 JL |
268 | for (p = format, i = 0; *p != 0; p++) |
269 | if (*p != '0') | |
270 | printf (" %sarg%d;\n", type_from_format (*p), i++); | |
271 | ||
272 | /* Now write out the body of the function itself, which allocates | |
273 | the memory and initializes it. */ | |
f8a83ee3 ZW |
274 | puts ("{"); |
275 | puts (" rtx rt;"); | |
1f8f4a0b | 276 | printf (" rt = ggc_alloc_rtx (%d);\n", (int) strlen (format)); |
f8a83ee3 ZW |
277 | |
278 | puts (" memset (rt, 0, sizeof (struct rtx_def) - sizeof (rtunion));\n"); | |
279 | puts (" PUT_CODE (rt, code);"); | |
280 | puts (" PUT_MODE (rt, mode);"); | |
3b80f6ca RH |
281 | |
282 | for (p = format, i = j = 0; *p ; ++p, ++i) | |
283 | if (*p != '0') | |
c5c76735 | 284 | printf (" %s (rt, %d) = arg%d;\n", accessor_from_format (*p), i, j++); |
f8a83ee3 ZW |
285 | else |
286 | printf (" X0EXP (rt, %d) = NULL_RTX;\n", i); | |
3b80f6ca | 287 | |
f8a83ee3 | 288 | puts ("\n return rt;\n}\n"); |
3b80f6ca RH |
289 | } |
290 | ||
c5c76735 | 291 | /* Generate the documentation header for files we write. */ |
0133b7d9 | 292 | |
3b80f6ca | 293 | static void |
3d7aafde | 294 | genlegend (void) |
3b80f6ca | 295 | { |
f8a83ee3 | 296 | puts ("/* Generated automatically by gengenrtl from rtl.def. */\n"); |
3b80f6ca RH |
297 | } |
298 | ||
c5c76735 | 299 | /* Generate the text of the header file we make, genrtl.h. */ |
0133b7d9 | 300 | |
3b80f6ca | 301 | static void |
3d7aafde | 302 | genheader (void) |
3b80f6ca RH |
303 | { |
304 | int i; | |
305 | const char **fmt; | |
0313e85b ZW |
306 | |
307 | puts ("#ifndef GCC_GENRTL_H"); | |
308 | puts ("#define GCC_GENRTL_H\n"); | |
309 | ||
3b80f6ca | 310 | for (fmt = formats; *fmt; ++fmt) |
c5c76735 | 311 | gendecl (*fmt); |
3b80f6ca | 312 | |
f8a83ee3 | 313 | putchar ('\n'); |
3b80f6ca RH |
314 | |
315 | for (i = 0; i < NUM_RTX_CODE; i++) | |
c5c76735 JL |
316 | if (! special_format (defs[i].format)) |
317 | genmacro (i); | |
0313e85b ZW |
318 | |
319 | puts ("\n#endif /* GCC_GENRTL_H */"); | |
3b80f6ca RH |
320 | } |
321 | ||
c5c76735 | 322 | /* Generate the text of the code file we write, genrtl.c. */ |
0133b7d9 | 323 | |
3b80f6ca | 324 | static void |
3d7aafde | 325 | gencode (void) |
3b80f6ca RH |
326 | { |
327 | const char **fmt; | |
328 | ||
f8a83ee3 ZW |
329 | puts ("#include \"config.h\""); |
330 | puts ("#include \"system.h\""); | |
4977bab6 ZW |
331 | puts ("#include \"coretypes.h\""); |
332 | puts ("#include \"tm.h\""); | |
f8a83ee3 ZW |
333 | puts ("#include \"obstack.h\""); |
334 | puts ("#include \"rtl.h\""); | |
335 | puts ("#include \"ggc.h\"\n"); | |
c5c76735 JL |
336 | |
337 | for (fmt = formats; *fmt != 0; fmt++) | |
338 | gendef (*fmt); | |
3b80f6ca RH |
339 | } |
340 | ||
c5c76735 JL |
341 | /* This is the main program. We accept only one argument, "-h", which |
342 | says we are writing the genrtl.h file. Otherwise we are writing the | |
343 | genrtl.c file. */ | |
344 | ||
3b80f6ca | 345 | int |
3d7aafde | 346 | main (int argc, char **argv) |
3b80f6ca | 347 | { |
3b80f6ca | 348 | find_formats (); |
c5c76735 | 349 | genlegend (); |
3b80f6ca | 350 | |
c5c76735 JL |
351 | if (argc == 2 && argv[1][0] == '-' && argv[1][1] == 'h') |
352 | genheader (); | |
353 | else | |
354 | gencode (); | |
3b80f6ca | 355 | |
0313e85b ZW |
356 | if (ferror (stdout) || fflush (stdout) || fclose (stdout)) |
357 | return FATAL_EXIT_CODE; | |
358 | ||
359 | return SUCCESS_EXIT_CODE; | |
3b80f6ca | 360 | } |