1 /* gen-protos.c - massages a list of prototypes, for use by fixproto.
2 Copyright (C) 1993, 1994 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, 675 Mass Ave, Cambridge, MA 02139, USA. */
25 #define HASH_SIZE 2503 /* a prime */
28 hashf (name
, len
, hashsize
)
29 register U_CHAR
*name
;
36 r
= HASHSTEP (r
, *name
++);
38 return MAKE_POS (r
) % hashsize
;
41 int hash_tab
[HASH_SIZE
];
46 /* Avoid error if config defines abort as fancy_abort.
47 It's not worth "really" implementing this because ordinary
48 compiler users never run fix-header. */
66 fprintf (outf
, "struct fn_decl std_protos[] = {\n");
70 int c
= skip_spaces (inf
, ' ');
71 int param_nesting
= 1;
72 char *param_start
, *param_end
, *decl_start
,
73 *name_start
, *name_end
;
77 linebuf
.ptr
= linebuf
.base
;
79 c
= read_upto (inf
, &linebuf
, '\n');
80 if (linebuf
.base
[0] == '#') /* skip cpp command */
82 if (linebuf
.base
[0] == '\0') /* skip empty line */
85 ptr
= linebuf
.ptr
- 1;
86 while (*ptr
== ' ' || *ptr
== '\t') ptr
--;
89 fprintf (stderr
, "Funny input line: %s\n", linebuf
.base
);
92 while (*ptr
== ' ' || *ptr
== '\t') ptr
--;
95 fprintf (stderr
, "Funny input line: %s\n", linebuf
.base
);
102 if (c
== '(' && --param_nesting
== 0)
110 while (*ptr
== ' ' || *ptr
== '\t') ptr
--;
115 fprintf (stderr
, "%s: Can't handle this complex prototype: %s\n",
116 argv
[0], linebuf
.base
);
121 while (isalnum (*ptr
) || *ptr
== '_') --ptr
;
123 while (*ptr
== ' ' || *ptr
== '\t') ptr
--;
129 decl_start
= linebuf
.base
;
130 if (strncmp (decl_start
, "typedef ", 8) == 0)
132 if (strncmp (decl_start
, "extern ", 7) == 0)
136 /* NOTE: If you edit this,
137 also edit lookup_std_proto in fix-header.c !! */
138 i
= hashf (name_start
, name_end
- name_start
, HASH_SIZE
);
140 if (hash_tab
[i
] != 0)
144 i
= (i
+1) % HASH_SIZE
;
147 if (hash_tab
[i
] == 0)
151 hash_tab
[i
] = next_index
;
153 fprintf (outf
, " {\"%s\", \"%s\", \"%s\" },\n",
154 name_start
, decl_start
, param_start
);
161 fprintf (outf
, "{0, 0, 0}\n};\n");
164 fprintf (outf
, "#define HASH_SIZE %d\n", HASH_SIZE
);
165 fprintf (outf
, "short hash_tab[HASH_SIZE] = {\n");
166 for (i
= 0; i
< HASH_SIZE
; i
++)
167 fprintf (outf
, " %d,\n", hash_tab
[i
]);
168 fprintf (outf
, "};\n");
177 fprintf (stderr
, "%s: %s\n", "gen-protos", s
);
178 #ifndef FAILURE_EXIT_CODE
179 #define FAILURE_EXIT_CODE 33 /* gnu cc command understands this */
181 exit (FAILURE_EXIT_CODE
);