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3b80f6ca | 1 | /* Generate code to allocate RTL structures. |
9dcd6f09 | 2 | Copyright (C) 1997, 1998, 1999, 2000, 2002, 2003, 2004, 2007 |
3d7aafde | 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 | |
9dcd6f09 | 9 | Software Foundation; either version 3, or (at your option) any later |
1322177d | 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 | |
9dcd6f09 NC |
18 | along with GCC; see the file COPYING3. If not see |
19 | <http://www.gnu.org/licenses/>. */ | |
3b80f6ca RH |
20 | |
21 | ||
4977bab6 | 22 | #include "bconfig.h" |
b04cd507 | 23 | #include "system.h" |
aa0b4465 | 24 | |
8f9eb495 | 25 | struct rtx_definition |
3b80f6ca | 26 | { |
8b60264b | 27 | const char *const enumname, *const name, *const format; |
3b80f6ca RH |
28 | }; |
29 | ||
0974c7d7 ZW |
30 | /* rtl.def needs CONST_DOUBLE_FORMAT, but we don't care what |
31 | CONST_DOUBLE_FORMAT is because we're not going to be generating | |
32 | anything for CONST_DOUBLE anyway. */ | |
33 | #define CONST_DOUBLE_FORMAT "" | |
34 | ||
9a238586 | 35 | #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) { #ENUM, NAME, FORMAT }, |
3b80f6ca | 36 | |
8f9eb495 AJ |
37 | static const struct rtx_definition defs[] = |
38 | { | |
3b80f6ca RH |
39 | #include "rtl.def" /* rtl expressions are documented here */ |
40 | }; | |
0974c7d7 | 41 | #define NUM_RTX_CODE ARRAY_SIZE(defs) |
3b80f6ca | 42 | |
0b5826ac | 43 | static const char *formats[NUM_RTX_CODE]; |
3b80f6ca | 44 | |
3d7aafde AJ |
45 | static const char *type_from_format (int); |
46 | static const char *accessor_from_format (int); | |
47 | static int special_format (const char *); | |
48 | static int special_rtx (int); | |
49 | static int excluded_rtx (int); | |
50 | static void find_formats (void); | |
51 | static void gendecl (const char *); | |
52 | static void genmacro (int); | |
53 | static void gendef (const char *); | |
54 | static void genlegend (void); | |
55 | static void genheader (void); | |
56 | static void gencode (void); | |
c5c76735 | 57 | \f |
0133b7d9 RH |
58 | /* Decode a format letter into a C type string. */ |
59 | ||
3b80f6ca | 60 | static const char * |
3d7aafde | 61 | type_from_format (int c) |
3b80f6ca RH |
62 | { |
63 | switch (c) | |
64 | { | |
65 | case 'i': | |
c5c76735 JL |
66 | return "int "; |
67 | ||
3b80f6ca | 68 | case 'w': |
c5c76735 JL |
69 | return "HOST_WIDE_INT "; |
70 | ||
3b80f6ca | 71 | case 's': |
3cce094d | 72 | return "const char *"; |
c5c76735 JL |
73 | |
74 | case 'e': case 'u': | |
75 | return "rtx "; | |
76 | ||
3b80f6ca | 77 | case 'E': |
c5c76735 | 78 | return "rtvec "; |
0dfa1860 | 79 | case 't': |
8f985ec4 | 80 | return "union tree_node *"; /* tree - typedef not available */ |
c8ea9a0f JH |
81 | case 'B': |
82 | return "struct basic_block_def *"; /* basic block - typedef not available */ | |
3b80f6ca | 83 | default: |
b2d59f6f | 84 | gcc_unreachable (); |
3b80f6ca RH |
85 | } |
86 | } | |
87 | ||
0133b7d9 RH |
88 | /* Decode a format letter into the proper accessor function. */ |
89 | ||
3b80f6ca | 90 | static const char * |
3d7aafde | 91 | accessor_from_format (int c) |
3b80f6ca RH |
92 | { |
93 | switch (c) | |
94 | { | |
95 | case 'i': | |
96 | return "XINT"; | |
c5c76735 | 97 | |
3b80f6ca RH |
98 | case 'w': |
99 | return "XWINT"; | |
c5c76735 | 100 | |
3b80f6ca RH |
101 | case 's': |
102 | return "XSTR"; | |
c5c76735 JL |
103 | |
104 | case 'e': case 'u': | |
3b80f6ca | 105 | return "XEXP"; |
c5c76735 | 106 | |
3b80f6ca RH |
107 | case 'E': |
108 | return "XVEC"; | |
c5c76735 | 109 | |
0dfa1860 MM |
110 | case 't': |
111 | return "XTREE"; | |
c5c76735 | 112 | |
c8ea9a0f JH |
113 | case 'B': |
114 | return "XBBDEF"; | |
10d1bb36 JH |
115 | |
116 | default: | |
b2d59f6f | 117 | gcc_unreachable (); |
3b80f6ca RH |
118 | } |
119 | } | |
120 | ||
c5c76735 JL |
121 | /* Return nonzero if we should ignore FMT, an RTL format, when making |
122 | the list of formats we write routines to create. */ | |
0133b7d9 | 123 | |
3b80f6ca | 124 | static int |
3d7aafde | 125 | special_format (const char *fmt) |
3b80f6ca RH |
126 | { |
127 | return (strchr (fmt, '*') != 0 | |
128 | || strchr (fmt, 'V') != 0 | |
129 | || strchr (fmt, 'S') != 0 | |
130 | || strchr (fmt, 'n') != 0); | |
131 | } | |
132 | ||
5692c7bc ZW |
133 | /* Return nonzero if the RTL code given by index IDX is one that we should |
134 | generate a gen_rtx_raw_FOO macro for, not gen_rtx_FOO (because gen_rtx_FOO | |
135 | is a wrapper in emit-rtl.c). */ | |
0133b7d9 | 136 | |
3b80f6ca | 137 | static int |
3d7aafde | 138 | special_rtx (int idx) |
3b80f6ca RH |
139 | { |
140 | return (strcmp (defs[idx].enumname, "CONST_INT") == 0 | |
41472af8 | 141 | || strcmp (defs[idx].enumname, "REG") == 0 |
ddef6bc7 | 142 | || strcmp (defs[idx].enumname, "SUBREG") == 0 |
a06e3c40 R |
143 | || strcmp (defs[idx].enumname, "MEM") == 0 |
144 | || strcmp (defs[idx].enumname, "CONST_VECTOR") == 0); | |
3b80f6ca RH |
145 | } |
146 | ||
5692c7bc ZW |
147 | /* Return nonzero if the RTL code given by index IDX is one that we should |
148 | generate no macro for at all (because gen_rtx_FOO is never used or | |
149 | cannot have the obvious interface). */ | |
150 | ||
151 | static int | |
3d7aafde | 152 | excluded_rtx (int idx) |
5692c7bc | 153 | { |
091a3ac7 CF |
154 | return ((strcmp (defs[idx].enumname, "CONST_DOUBLE") == 0) |
155 | || (strcmp (defs[idx].enumname, "CONST_FIXED") == 0)); | |
5692c7bc ZW |
156 | } |
157 | ||
dc297297 | 158 | /* Place a list of all format specifiers we use into the array FORMAT. */ |
0133b7d9 | 159 | |
3b80f6ca | 160 | static void |
3d7aafde | 161 | find_formats (void) |
3b80f6ca | 162 | { |
3ef996b0 | 163 | unsigned int i; |
3b80f6ca | 164 | |
3ef996b0 | 165 | for (i = 0; i < NUM_RTX_CODE; i++) |
3b80f6ca RH |
166 | { |
167 | const char **f; | |
168 | ||
169 | if (special_format (defs[i].format)) | |
170 | continue; | |
171 | ||
c5c76735 | 172 | for (f = formats; *f; f++) |
0133b7d9 | 173 | if (! strcmp (*f, defs[i].format)) |
3b80f6ca RH |
174 | break; |
175 | ||
c5c76735 | 176 | if (*f == 0) |
3b80f6ca RH |
177 | *f = defs[i].format; |
178 | } | |
179 | } | |
180 | ||
c5c76735 | 181 | /* Write the declarations for the routine to allocate RTL with FORMAT. */ |
0133b7d9 | 182 | |
3b80f6ca | 183 | static void |
3d7aafde | 184 | gendecl (const char *format) |
3b80f6ca RH |
185 | { |
186 | const char *p; | |
c5c76735 | 187 | int i, pos; |
8f9eb495 | 188 | |
9dbe7947 | 189 | printf ("extern rtx gen_rtx_fmt_%s_stat\t (RTX_CODE, ", format); |
c5c76735 JL |
190 | printf ("enum machine_mode mode"); |
191 | ||
192 | /* Write each parameter that is needed and start a new line when the line | |
193 | would overflow. */ | |
194 | for (p = format, i = 0, pos = 75; *p != 0; p++) | |
3b80f6ca | 195 | if (*p != '0') |
c5c76735 JL |
196 | { |
197 | int ourlen = strlen (type_from_format (*p)) + 6 + (i > 9); | |
198 | ||
199 | printf (","); | |
200 | if (pos + ourlen > 76) | |
201 | printf ("\n\t\t\t\t "), pos = 39; | |
202 | ||
203 | printf (" %sarg%d", type_from_format (*p), i++); | |
204 | pos += ourlen; | |
205 | } | |
9dbe7947 | 206 | printf (" MEM_STAT_DECL"); |
c5c76735 | 207 | |
3d7aafde | 208 | printf (");\n"); |
9dbe7947 JH |
209 | printf ("#define gen_rtx_fmt_%s(c, m", format); |
210 | for (p = format, i = 0; *p != 0; p++) | |
211 | if (*p != '0') | |
212 | printf (", p%i",i++); | |
213 | printf (")\\\n gen_rtx_fmt_%s_stat (c, m", format); | |
214 | for (p = format, i = 0; *p != 0; p++) | |
215 | if (*p != '0') | |
216 | printf (", p%i",i++); | |
217 | printf (" MEM_STAT_INFO)\n\n"); | |
3b80f6ca RH |
218 | } |
219 | ||
c5c76735 JL |
220 | /* Generate macros to generate RTL of code IDX using the functions we |
221 | write. */ | |
0133b7d9 | 222 | |
8f9eb495 | 223 | static void |
3d7aafde | 224 | genmacro (int idx) |
3b80f6ca RH |
225 | { |
226 | const char *p; | |
227 | int i; | |
228 | ||
c5c76735 JL |
229 | /* We write a macro that defines gen_rtx_RTLCODE to be an equivalent to |
230 | gen_rtx_fmt_FORMAT where FORMAT is the RTX_FORMAT of RTLCODE. */ | |
3b80f6ca | 231 | |
5692c7bc ZW |
232 | if (excluded_rtx (idx)) |
233 | /* Don't define a macro for this code. */ | |
234 | return; | |
235 | ||
c5c76735 JL |
236 | printf ("#define gen_rtx_%s%s(MODE", |
237 | special_rtx (idx) ? "raw_" : "", defs[idx].enumname); | |
238 | ||
239 | for (p = defs[idx].format, i = 0; *p != 0; p++) | |
3b80f6ca | 240 | if (*p != '0') |
c5c76735 JL |
241 | printf (", ARG%d", i++); |
242 | ||
243 | printf (") \\\n gen_rtx_fmt_%s (%s, (MODE)", | |
244 | defs[idx].format, defs[idx].enumname); | |
3b80f6ca | 245 | |
c5c76735 | 246 | for (p = defs[idx].format, i = 0; *p != 0; p++) |
3b80f6ca | 247 | if (*p != '0') |
c5c76735 JL |
248 | printf (", (ARG%d)", i++); |
249 | ||
f8a83ee3 | 250 | puts (")"); |
3b80f6ca RH |
251 | } |
252 | ||
c5c76735 JL |
253 | /* Generate the code for the function to generate RTL whose |
254 | format is FORMAT. */ | |
0133b7d9 | 255 | |
3b80f6ca | 256 | static void |
3d7aafde | 257 | gendef (const char *format) |
3b80f6ca RH |
258 | { |
259 | const char *p; | |
260 | int i, j; | |
8f9eb495 | 261 | |
c5c76735 JL |
262 | /* Start by writing the definition of the function name and the types |
263 | of the arguments. */ | |
3b80f6ca | 264 | |
9dbe7947 | 265 | printf ("rtx\ngen_rtx_fmt_%s_stat (RTX_CODE code, enum machine_mode mode", format); |
c5c76735 | 266 | for (p = format, i = 0; *p != 0; p++) |
3b80f6ca | 267 | if (*p != '0') |
6906ba40 | 268 | printf (",\n\t%sarg%d", type_from_format (*p), i++); |
3b80f6ca | 269 | |
9dbe7947 | 270 | puts (" MEM_STAT_DECL)"); |
c5c76735 JL |
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;"); | |
9dbe7947 | 276 | puts (" rt = rtx_alloc_stat (code PASS_MEM_STAT);\n"); |
f8a83ee3 | 277 | |
f8a83ee3 | 278 | puts (" PUT_MODE (rt, mode);"); |
3b80f6ca RH |
279 | |
280 | for (p = format, i = j = 0; *p ; ++p, ++i) | |
281 | if (*p != '0') | |
c5c76735 | 282 | printf (" %s (rt, %d) = arg%d;\n", accessor_from_format (*p), i, j++); |
f8a83ee3 ZW |
283 | else |
284 | printf (" X0EXP (rt, %d) = NULL_RTX;\n", i); | |
3b80f6ca | 285 | |
f8a83ee3 | 286 | puts ("\n return rt;\n}\n"); |
3b80f6ca RH |
287 | } |
288 | ||
c5c76735 | 289 | /* Generate the documentation header for files we write. */ |
0133b7d9 | 290 | |
3b80f6ca | 291 | static void |
3d7aafde | 292 | genlegend (void) |
3b80f6ca | 293 | { |
f8a83ee3 | 294 | puts ("/* Generated automatically by gengenrtl from rtl.def. */\n"); |
3b80f6ca RH |
295 | } |
296 | ||
c5c76735 | 297 | /* Generate the text of the header file we make, genrtl.h. */ |
0133b7d9 | 298 | |
3b80f6ca | 299 | static void |
3d7aafde | 300 | genheader (void) |
3b80f6ca | 301 | { |
3ef996b0 | 302 | unsigned int i; |
3b80f6ca | 303 | const char **fmt; |
0313e85b ZW |
304 | |
305 | puts ("#ifndef GCC_GENRTL_H"); | |
306 | puts ("#define GCC_GENRTL_H\n"); | |
9dbe7947 | 307 | puts ("#include \"statistics.h\"\n"); |
0313e85b | 308 | |
3b80f6ca | 309 | for (fmt = formats; *fmt; ++fmt) |
c5c76735 | 310 | gendecl (*fmt); |
3b80f6ca | 311 | |
f8a83ee3 | 312 | putchar ('\n'); |
3b80f6ca | 313 | |
3ef996b0 | 314 | for (i = 0; i < NUM_RTX_CODE; i++) |
c5c76735 JL |
315 | if (! special_format (defs[i].format)) |
316 | genmacro (i); | |
0313e85b ZW |
317 | |
318 | puts ("\n#endif /* GCC_GENRTL_H */"); | |
3b80f6ca RH |
319 | } |
320 | ||
c5c76735 | 321 | /* Generate the text of the code file we write, genrtl.c. */ |
0133b7d9 | 322 | |
3b80f6ca | 323 | static void |
3d7aafde | 324 | gencode (void) |
3b80f6ca RH |
325 | { |
326 | const char **fmt; | |
327 | ||
f8a83ee3 ZW |
328 | puts ("#include \"config.h\""); |
329 | puts ("#include \"system.h\""); | |
4977bab6 ZW |
330 | puts ("#include \"coretypes.h\""); |
331 | puts ("#include \"tm.h\""); | |
f8a83ee3 ZW |
332 | puts ("#include \"obstack.h\""); |
333 | puts ("#include \"rtl.h\""); | |
334 | puts ("#include \"ggc.h\"\n"); | |
c5c76735 JL |
335 | |
336 | for (fmt = formats; *fmt != 0; fmt++) | |
337 | gendef (*fmt); | |
3b80f6ca RH |
338 | } |
339 | ||
c5c76735 JL |
340 | /* This is the main program. We accept only one argument, "-h", which |
341 | says we are writing the genrtl.h file. Otherwise we are writing the | |
342 | genrtl.c file. */ | |
343 | ||
3b80f6ca | 344 | int |
3d7aafde | 345 | main (int argc, char **argv) |
3b80f6ca | 346 | { |
3b80f6ca | 347 | find_formats (); |
c5c76735 | 348 | genlegend (); |
3b80f6ca | 349 | |
c5c76735 JL |
350 | if (argc == 2 && argv[1][0] == '-' && argv[1][1] == 'h') |
351 | genheader (); | |
352 | else | |
353 | gencode (); | |
3b80f6ca | 354 | |
0313e85b ZW |
355 | if (ferror (stdout) || fflush (stdout) || fclose (stdout)) |
356 | return FATAL_EXIT_CODE; | |
357 | ||
358 | return SUCCESS_EXIT_CODE; | |
3b80f6ca | 359 | } |