1 /* Generate code to allocate RTL structures.
2 Copyright (C) 1997 Free Software Foundation, Inc.
4 This file is part of GNU CC.
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)
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.
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
18 the Free Software Foundation, 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
26 #define obstack_chunk_alloc xmalloc
27 #define obstack_chunk_free free
35 const char *enumname, *name, *format;
39 #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) { # ENUM, NAME, FORMAT },
41 #define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) { "ENUM", NAME, FORMAT },
44 struct rtx_definition defs[] =
46 #include "rtl.def" /* rtl expressions are documented here */
49 const char *formats[NUM_RTX_CODE];
60 return "HOST_WIDE_INT";
74 accessor_from_format (c)
99 return (strchr (fmt, '*') != 0
100 || strchr (fmt, 'V') != 0
101 || strchr (fmt, 'S') != 0
102 || strchr (fmt, 'n') != 0);
109 return (strcmp (defs[idx].enumname, "CONST_INT") == 0
110 || strcmp (defs[idx].enumname, "REG") == 0);
118 for (i = 0; i < NUM_RTX_CODE; ++i)
122 if (special_format (defs[i].format))
125 for (f = formats; *f ; ++f)
126 if (!strcmp(*f, defs[i].format))
142 fprintf (f, "extern rtx gen_rtx_fmt_%s PROTO((RTX_CODE, enum machine_mode mode",
144 for (p = format, i = 0; *p ; ++p)
146 fprintf (f, ", %s arg%d", type_from_format (*p), i++);
147 fprintf (f, "));\n");
158 fprintf (f, "#define gen_rtx_%s%s(mode",
159 (special_rtx (idx) ? "raw_" : ""), defs[idx].enumname);
161 for (p = defs[idx].format, i = 0; *p ; ++p)
163 fprintf (f, ", arg%d", i++);
166 fprintf (f, "gen_rtx_fmt_%s(%s,(mode)", defs[idx].format, defs[idx].enumname);
167 for (p = defs[idx].format, i = 0; *p ; ++p)
169 fprintf (f, ",(arg%d)", i++);
181 fprintf (f, "rtx\ngen_rtx_fmt_%s (code, mode", format);
182 for (p = format, i = 0; *p ; ++p)
184 fprintf (f, ", arg%d", i++);
186 fprintf (f, ")\n RTX_CODE code;\n enum machine_mode mode;\n");
187 for (p = format, i = 0; *p ; ++p)
189 fprintf (f, " %s arg%d;\n", type_from_format (*p), i++);
191 /* See rtx_alloc in rtl.c for comments. */
193 fprintf (f, " rtx rt = obstack_alloc_rtx (sizeof (struct rtx_def) + %d * sizeof (rtunion));\n",
194 (int) strlen (format) - 1);
196 fprintf (f, " PUT_CODE (rt, code);\n");
197 fprintf (f, " PUT_MODE (rt, mode);\n");
199 for (p = format, i = j = 0; *p ; ++p, ++i)
202 fprintf (f, " %s (rt, %d) = arg%d;\n",
203 accessor_from_format (*p), i, j++);
206 fprintf (f, "\n return rt;\n}\n\n");
213 fprintf (f, "/* Generated automaticaly by the program `gengenrtl'\n");
214 fprintf (f, " from the RTL description file `rtl.def' */\n\n");
224 for (fmt = formats; *fmt; ++fmt)
229 for (i = 0; i < NUM_RTX_CODE; i++)
231 if (special_format (defs[i].format))
243 fputs ("#include \"config.h\"\n", f);
244 fputs ("#include \"obstack.h\"\n", f);
245 fputs ("#include \"rtl.h\"\n\n", f);
246 fputs ("extern struct obstack *rtl_obstack;\n\n", f);
247 fputs ("static rtx obstack_alloc_rtx PROTO((int length));\n", f);
248 fputs ("static rtx obstack_alloc_rtx (length)\n", f);
249 fputs (" register int length;\n{\n", f);
250 fputs (" rtx rt = (rtx) obstack_alloc (rtl_obstack, length);\n\n", f);
251 fputs (" if (sizeof(struct rtx_def) - sizeof(rtunion) == sizeof(int))\n", f);
252 fputs (" *(int *)rt = 0;\n", f);
253 fputs (" else if (sizeof(struct rtx_def) - sizeof(rtunion) == sizeof(HOST_WIDE_INT))\n", f);
254 fputs (" *(HOST_WIDE_INT *)rt = 0;\n", f);
255 fputs (" else\n", f);
256 fputs (" bzero(rt, sizeof(struct rtx_def) - sizeof(rtunion));\n\n", f);
257 fputs (" return rt;\n}\n\n", f);
259 for (fmt = formats; *fmt; ++fmt)
263 #if defined(USE_C_ALLOCA) && !defined(__GNUC__)
268 char *tmp = (char *) malloc (nbytes);
272 fprintf (stderr, "can't allocate %d bytes (out of virtual memory)\n", nbytes);
273 exit (FATAL_EXIT_CODE);
278 #endif /* USE_C_ALLOCA && !__GNUC__ */
292 f = fopen (argv[1], "w");
302 f = fopen (argv[2], "w");