1 /* gen-protos.c - massages a list of prototypes, for use by fixproto.
2 Copyright (C) 1993, 94-96, 1998 Free Software Foundation, Inc.
4 This program is free software; you can redistribute it and/or modify it
5 under the terms of the GNU General Public License as published by the
6 Free Software Foundation; either version 2, or (at your option) any
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
27 #define HASH_SIZE 2503 /* a prime */
28 int hash_tab[HASH_SIZE];
32 hashf (name, len, hashsize)
33 register U_CHAR *name;
40 r = HASHSTEP (r, *name++);
42 return MAKE_POS (r) % hashsize;
51 /* NOTE: If you edit this, also edit lookup_std_proto in fix-header.c !! */
52 i = hashf (fname, strlen (fname), HASH_SIZE);
58 i = (i+1) % HASH_SIZE;
65 hash_tab[i] = next_index;
70 /* Given a function prototype, fill in the fields of FN.
71 The result is a boolean indicating if a function prototype was found.
73 The input string is modified (trailing NULs are inserted).
74 The fields of FN point to the input string. */
77 parse_fn_proto (start, end, fn)
82 int param_nesting = 1;
83 char *param_start, *param_end, *decl_start, *name_start, *name_end;
86 while (*ptr == ' ' || *ptr == '\t') ptr--;
89 fprintf (stderr, "Funny input line: %s\n", start);
92 while (*ptr == ' ' || *ptr == '\t') ptr--;
95 fprintf (stderr, "Funny input line: %s\n", start);
102 if (c == '(' && --param_nesting == 0)
110 while (*ptr == ' ' || *ptr == '\t') ptr--;
115 fprintf (stderr, "%s: Can't handle this complex prototype: %s\n",
121 while (ISALNUM (*ptr) || *ptr == '_') --ptr;
123 while (*ptr == ' ' || *ptr == '\t') ptr--;
129 if (strncmp (decl_start, "typedef ", 8) == 0)
131 if (strncmp (decl_start, "extern ", 7) == 0)
134 fn->fname = name_start;
135 fn->rtype = decl_start;
136 fn->params = param_start;
149 struct fn_decl fn_decl;
151 i = strlen (argv[0]);
152 while (i > 0 && argv[0][i-1] != '/') --i;
153 progname = &argv[0][i];
155 INIT_SSTRING (&linebuf);
157 fprintf (outf, "struct fn_decl std_protos[] = {\n");
159 /* A hash table entry of 0 means "unused" so reserve it. */
160 fprintf (outf, " {\"\", \"\", \"\"},\n");
165 int c = skip_spaces (inf, ' ');
169 linebuf.ptr = linebuf.base;
171 c = read_upto (inf, &linebuf, '\n');
172 if (linebuf.base[0] == '#') /* skip cpp command */
174 if (linebuf.base[0] == '\0') /* skip empty line */
177 if (! parse_fn_proto (linebuf.base, linebuf.ptr, &fn_decl))
180 add_hash (fn_decl.fname);
182 fprintf (outf, " {\"%s\", \"%s\", \"%s\"},\n",
183 fn_decl.fname, fn_decl.rtype, fn_decl.params);
188 fprintf (outf, " {0, 0, 0}\n};\n");
191 fprintf (outf, "#define HASH_SIZE %d\n", HASH_SIZE);
192 fprintf (outf, "short hash_tab[HASH_SIZE] = {\n");
193 for (i = 0; i < HASH_SIZE; i++)
194 fprintf (outf, " %d,\n", hash_tab[i]);
195 fprintf (outf, "};\n");
200 /* Avoid error if config defines abort as fancy_abort.
201 It's not worth "really" implementing this because ordinary
202 compiler users never run fix-header. */
214 fprintf (stderr, "%s: %s\n", "gen-protos", s);
215 exit (FATAL_EXIT_CODE);