Initial revision

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@4986 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 141 insertions, 0 deletions

diff --git a/gcc/gen-protos.c b/gcc/gen-protos.c
new file mode 100644
index 00000000000..ace6d1267d8
--- /dev/null
+++ b/gcc/gen-protos.c
@@ -0,0 +1,141 @@
+/* gen-protos.c - massages a list of prototypes, for use by fixproto.
+   Copyright (C) 1993 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 "scan.h"
+
+#define HASH_SIZE 2503 /* a prime */
+
+int hash_tab[HASH_SIZE];
+
+sstring linebuf;
+
+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))
+	{
+	  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 patch-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\" }, /* ix: %d, i0: %d */\n",
+	       name_start, decl_start, param_start, i, i0);
+
+      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;
+}