diff options
Diffstat (limited to 'gnu/usr.bin/cc/legal/gen-protos.c')
| -rw-r--r-- | gnu/usr.bin/cc/legal/gen-protos.c | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/gnu/usr.bin/cc/legal/gen-protos.c b/gnu/usr.bin/cc/legal/gen-protos.c new file mode 100644 index 0000000..094ce2a --- /dev/null +++ b/gnu/usr.bin/cc/legal/gen-protos.c @@ -0,0 +1,155 @@ +/* gen-protos.c - massages a list of prototypes, for use by fixproto. + Copyright (C) 1993, 1994 Free Software Foundation, Inc. + +This program is free software; you can redistribute it and/or modify it +under the terms of the GNU General Public License as published by the +Free Software Foundation; either version 2, or (at your option) any +later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program; if not, write to the Free Software +Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ + +#include <stdio.h> +#include <ctype.h> +#include "hconfig.h" +#include "scan.h" + +#define HASH_SIZE 2503 /* a prime */ + +int hash_tab[HASH_SIZE]; +int verbose = 0; + +sstring linebuf; + +/* Avoid error if config defines abort as fancy_abort. + It's not worth "really" implementing this because ordinary + compiler users never run fix-header. */ + +void +fancy_abort () +{ + abort (); +} + +int +main (argc, argv) + int argc; + char** argv; +{ + FILE *inf = stdin; + FILE *outf = stdout; + int next_index = 0; + int i, i0; + + fprintf (outf, "struct fn_decl std_protos[] = {\n"); + + for (;;) + { + int c = skip_spaces (inf, ' '); + int param_nesting = 1; + char *param_start, *param_end, *decl_start, + *name_start, *name_end; + register char *ptr; + if (c == EOF) + break; + linebuf.ptr = linebuf.base; + ungetc (c, inf); + c = read_upto (inf, &linebuf, '\n'); + if (linebuf.base[0] == '#') /* skip cpp command */ + continue; + if (linebuf.base[0] == '\0') /* skip empty line */ + continue; + + ptr = linebuf.ptr - 1; + while (*ptr == ' ' || *ptr == '\t') ptr--; + if (*ptr-- != ';') + { + fprintf (stderr, "Funny input line: %s\n", linebuf.base); + continue; + } + while (*ptr == ' ' || *ptr == '\t') ptr--; + if (*ptr != ')') + { + fprintf (stderr, "Funny input line: %s\n", linebuf.base); + continue; + } + param_end = ptr; + for (;;) + { + int c = *--ptr; + if (c == '(' && --param_nesting == 0) + break; + else if (c == ')') + param_nesting++; + } + param_start = ptr+1; + + ptr--; + while (*ptr == ' ' || *ptr == '\t') ptr--; + + if (!isalnum (*ptr)) + { + if (verbose) + fprintf (stderr, "%s: Can't handle this complex prototype: %s\n", + argv[0], linebuf.base); + continue; + } + name_end = ptr+1; + + while (isalnum (*ptr) || *ptr == '_') --ptr; + name_start = ptr+1; + while (*ptr == ' ' || *ptr == '\t') ptr--; + ptr[1] = 0; + *name_end = 0; + *param_end = 0; + *name_end = 0; + + decl_start = linebuf.base; + if (strncmp (decl_start, "typedef ", 8) == 0) + continue; + if (strncmp (decl_start, "extern ", 7) == 0) + decl_start += 7; + + + /* NOTE: If you edit this, + also edit lookup_std_proto in fix-header.c !! */ + i = hash (name_start) % HASH_SIZE; + i0 = i; + if (hash_tab[i] != 0) + { + for (;;) + { + i = (i+1) % HASH_SIZE; + if (i == i0) + abort (); + if (hash_tab[i] == 0) + break; + } + } + hash_tab[i] = next_index; + + fprintf (outf, " {\"%s\", \"%s\", \"%s\" },\n", + name_start, decl_start, param_start); + + next_index++; + + if (c == EOF) + break; + } + fprintf (outf, "{0, 0, 0}\n};\n"); + + + fprintf (outf, "#define HASH_SIZE %d\n", HASH_SIZE); + fprintf (outf, "short hash_tab[HASH_SIZE] = {\n"); + for (i = 0; i < HASH_SIZE; i++) + fprintf (outf, " %d,\n", hash_tab[i]); + fprintf (outf, "};\n"); + + return 0; +} |
