Initial revision

From-SVN: r4986

gcc/gen-protos.c

+/* 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;
+}

gcc/scan-decls.c

+/* scan-decls.c - Extracts declarations from cpp output.
+   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.  */
+
+/* This filter scans a C source file (actually, the output of cpp).
+   It looks for function declaration.  For each declaration, it prints:
+
+   	NAME;C;RTYPE;ARGS;FILENAME;LINENO;
+
+   NAME is the function's name.
+   C is "F" if the declaration is nested inside 'extern "C"' braces;
+   otherwise "f".
+   RTYPE is the function's return type.
+   ARGS is the function's argument list.
+   FILENAME and LINENO is where the declarations was seen
+   (taking #-directives into account).
+
+   Also:
+
+	NAME;M;
+   indicates that the macro NAME was seen (when invoked from fixproto).
+	NAME;X;TYPE;
+   indicates that 'extern TYPE NAME;' was seen.
+
+   Written by Per Bothner <bothner@cygnus.com>, July 1993.
+   */
+
+#include <stdio.h>
+#include <ctype.h>
+#include "scan.h"
+
+sstring buf;
+sstring rtype;
+
+int brace_nesting = 0;
+
+/* The first extern_C_braces_length elements of extern_C_braces
+   indicate the (brace nesting levels of) left braces that were
+   prefixed by extern "C". */
+int extern_C_braces_length = 0;
+char extern_C_braces[20];
+#define in_extern_C_brace (extern_C_braces_length>0)
+
+/* True if the function declaration currently being scanned is
+   prefixed by extern "C". */
+int current_extern_C = 0;
+
+int
+main ()
+{
+  FILE *fp = stdin;
+  int c;
+  int saw_extern;
+
+ new_statement:
+  c = get_token (fp, &buf);
+ handle_statement:
+  current_extern_C = 0;
+  saw_extern = 0;
+  if (c == '}')
+    {
+      /* pop an 'extern "C"' nesting level, if appropriate */
+      if (extern_C_braces_length
+	  && extern_C_braces[extern_C_braces_length - 1] == brace_nesting)
+	extern_C_braces_length--;
+      brace_nesting--;
+      goto new_statement;
+    }
+  if (c == '{')
+    {
+      brace_nesting++;
+      goto new_statement;
+    }
+  if (c == EOF)
+    return 0;
+  if (c == ';')
+    goto new_statement;
+  if (c != IDENTIFIER_TOKEN)
+    goto new_statement;
+  rtype.ptr = rtype.base;
+  if (SSTRING_LENGTH (&buf) > 16
+      && strncmp (buf.base, "__DEFINED_MACRO_", 16) == 0)
+    {
+      fprintf (stdout, "%s;M;\n", buf.base+16);
+      goto new_statement;
+    }
+  if (strcmp (buf.base, "extern") == 0)
+    {
+      saw_extern = 1;
+      c = get_token (fp, &buf);
+      if (c == STRING_TOKEN && strcmp (buf.base, "C") == 0)
+	{
+	  current_extern_C = 1;
+	  c = get_token (fp, &buf);
+	  if (c == '{')
+	    {
+	      brace_nesting++;
+	      extern_C_braces[extern_C_braces_length++] = brace_nesting;
+	      goto new_statement;
+	    }
+	  c = get_token (fp, &buf);
+	}
+    }
+  for (;;)
+    {
+      int followingc = getc (fp); /* char following token in buf */
+      if (c == IDENTIFIER_TOKEN)
+	{
+	  int nextc = skip_spaces (fp, followingc);
+	  if (nextc == '(')
+	    {
+	      int nesting = 1;
+
+	      MAKE_SSTRING_SPACE(&rtype, 1);
+	      *rtype.ptr = 0;
+
+ 	      fprintf (stdout, "%s;%s;%s;",
+		       buf.base,
+		       in_extern_C_brace || current_extern_C ? "F" : "f",
+		       rtype.base);
+	      c = skip_spaces (fp, ' ');
+	      for (;;)
+		{
+		  if (c == '(')
+		    nesting++;
+		  else if (c == ')')
+		    if (--nesting == 0)
+		      break;
+		  if (c == EOF)
+		    break;
+		  if (c == '\n')
+		    c = ' ';
+		  putc (c, stdout);	
+		  c = getc (fp);
+		}
+	      fprintf (stdout, ";%s;%d;\n",
+		       source_filename.base, source_lineno);
+	      goto new_statement;
+	    }
+	  else if (nextc == ';' && saw_extern)
+	    {
+ 	      fprintf (stdout, "%s;X;%s;\n", buf.base, rtype.base);
+	      goto handle_statement;
+	    }
+	  else
+	    ungetc (nextc, fp);
+	}
+      else if (followingc != EOF)
+	ungetc (followingc, fp);
+      if (c == ';' || c == '{' || c == '}' || c == EOF)
+	goto handle_statement;
+      sstring_append (&rtype, &buf);
+      if (followingc == ' ' || followingc == '\t' || followingc == '\n')
+	SSTRING_PUT(&rtype, ' ');
+      c = get_token (fp, &buf);
+    }
+}

gcc/scan.c

+/* scan.c - Utility functions for scan-decls and patch-header programs.
+   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 "scan.h"
+#include <ctype.h>
+
+int lineno = 1;
+int source_lineno = 1;
+sstring source_filename;
+
+void
+make_sstring_space (str, count)
+     sstring *str;
+     int count;
+{
+  int cur_pos = str->ptr - str->base;
+  int cur_size = str->limit - str->base;
+  int new_size = cur_pos + count + 100;
+
+  if (new_size <= cur_size)
+    return;
+  
+  if (str->base == NULL)
+    str->base = xmalloc (new_size);
+  else
+    str->base = xrealloc (str->base, new_size);
+  str->ptr = str->base + cur_size;
+  str->limit = str->base + new_size;
+}
+
+void
+sstring_append (dst, src)
+     sstring *dst;
+     sstring *src;
+{
+  register char *d, *s;
+  register count = SSTRING_LENGTH(src);
+  MAKE_SSTRING_SPACE(dst, count + 1);
+  d = dst->ptr;
+  s = src->base;
+  while (--count >= 0) *d++ = *s++;
+  dst->ptr = d;
+  *d = 0;  
+}
+
+memory_full ()
+{
+  abort();
+}
+
+char *
+xmalloc (size)
+     unsigned size;
+{
+  register char *ptr = (char *) malloc (size);
+  if (ptr != 0) return (ptr);
+  memory_full ();
+  /*NOTREACHED*/
+  return 0;
+}
+
+
+char *
+xrealloc (old, size)
+     char *old;
+     unsigned size;
+{
+  register char *ptr = (char *) realloc (old, size);
+  if (ptr != 0) return (ptr);
+  memory_full ();
+  /*NOTREACHED*/
+  return 0;
+}
+
+int
+scan_ident (fp, s, c)
+     register FILE *fp;
+     register sstring *s;
+     int c;
+{
+  s->ptr = s->base;
+  if (isalpha(c) || c == '_')
+    {
+      for (;;)
+	{
+	  SSTRING_PUT(s, c);
+	  c = getc (fp);
+	  if (c == EOF || !(isalnum(c) || c == '_'))
+	    break;
+	}
+    }
+  MAKE_SSTRING_SPACE(s, 1);
+  *s->ptr = 0;
+  return c;
+}
+
+int scan_string (fp, s, init)
+     register FILE *fp;
+     register sstring *s;
+{
+  int c;
+  for (;;)
+    {
+      c = getc (fp);
+      if (c == EOF || c == '\n')
+	break;
+      if (c == init)
+	{
+	  c = getc (fp);
+	  break;
+	}
+      if (c == '\\')
+	{
+	  c = getc (fp);
+	  if (c == EOF)
+	    break;
+	  if (c == '\n')
+	    continue;
+	}
+      SSTRING_PUT(s, c);
+    }
+  MAKE_SSTRING_SPACE(s, 1);
+  *s->ptr = 0;
+  return c;
+}
+
+/* Skip horizontal white spaces (spaces, tabs, and C-style comments). */
+
+int skip_spaces (fp, c)
+     register FILE *fp;
+     int c;
+{
+  for (;;)
+    {
+      if (c == ' ' || c == '\t')
+	c = getc (fp);
+      else if (c == '/')
+	{
+	  c = getc (fp);
+	  if (c != '*')
+	    {
+	      ungetc (c, fp);
+	      return '/';
+	    }
+	  c = getc (fp);
+	  for (;;)
+	    {
+	      if (c == EOF)
+		return EOF;
+	      else if (c != '*')
+		{
+		  if (c == '\n')
+		    source_lineno++, lineno++;
+		  c = getc (fp);
+		}
+	      else if ((c = getc (fp)) == '/')
+		return getc (fp);
+	    }
+	}
+      else
+	break;
+    }
+  return c;
+}
+
+int
+read_upto (fp, str, delim)
+     FILE *fp;
+     sstring *str;
+     int delim;
+{
+  int ch;
+  for (;;)
+    {
+      ch = getc (fp);
+      if (ch == EOF || ch == delim)
+	break;
+      SSTRING_PUT(str, ch);
+    }
+  MAKE_SSTRING_SPACE(str, 1);
+  *str->ptr = 0;
+  return ch;
+}
+
+int
+get_token (fp, s)
+     register FILE *fp;
+     register sstring *s;
+{
+  int c;
+  s->ptr = s->base;
+ retry:
+  c = ' ';
+ again:
+  c = skip_spaces (fp, c);
+  if (c == '\n')
+    {
+      source_lineno++;
+      lineno++;
+      goto retry;
+    }
+  if (c == '#')
+    {
+      c = get_token (fp, s);
+      if (c == INT_TOKEN)
+	{
+	  source_lineno = atoi (s->base);
+	  get_token (fp, &source_filename);
+	}
+      for (;;)
+	{
+	  c = getc (fp);
+	  if (c == EOF)
+	    return EOF;
+	  if (c == '\n')
+	    goto retry;
+	}
+    }
+  if (c == EOF)
+    return EOF;
+  if (isdigit (c))
+    {
+      do
+	{
+	  SSTRING_PUT(s, c);
+	  c = getc (fp);
+	} while (c != EOF && isdigit(c));
+      ungetc (c, fp);
+      c = INT_TOKEN;
+      goto done;
+    }
+  if (isalpha (c) || c == '_')
+    {
+      c = scan_ident (fp, s, c);
+      ungetc (c, fp);
+      return IDENTIFIER_TOKEN;
+    }
+  if (c == '\'' || c == '"')
+    {
+      int quote = c;
+      c = scan_string (fp, s, c);
+      ungetc (c, fp);
+      return c == '\'' ? CHAR_TOKEN : STRING_TOKEN;
+    }
+  SSTRING_PUT(s, c);
+ done:
+  MAKE_SSTRING_SPACE(s, 1);
+  *s->ptr = 0;
+  return c;
+}
+
+unsigned long
+hash (str)
+     char *str;
+{
+  int h = 0;
+  /* Replace this with something faster/better! FIXME! */
+  while (*str) h = (h << 3) + *str++;
+  return h & 0x7FFFFFFF;
+}

gcc/scan.h

+/* scan.h - Utility declarations for scan-decls and patch-header programs.
+   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>
+
+typedef struct sstring
+{
+  char *base;
+  char *ptr;
+  char *limit;
+} sstring;
+
+#define INIT_SSTRING(STR) ((STR)->base = 0, (STR)->ptr = 0, (STR)->limit = 0)
+#define FREE_SSTRING(STR) do { if ((STR)->base) free (STR)->base; } while(0)
+#define SSTRING_PUT(STR, C) do {\
+  if ((STR)->limit <= (STR)->ptr) make_sstring_space (STR, 1); \
+  *(STR)->ptr++ = (C); } while (0)
+#define SSTRING_LENGTH(STR) ((STR)->ptr - (STR)->base)
+#define MAKE_SSTRING_SPACE(STR, COUNT) \
+  if ((STR)->limit - (STR)->ptr < (COUNT)) make_sstring_space (STR, COUNT);
+
+#ifndef _PARAMS
+#if defined(__STDC__) || defined(__cplusplus)
+#define _PARAMS(args) args
+#else
+#define _PARAMS(args) ()
+#endif
+#endif
+
+struct partial_proto;
+struct fn_decl
+{
+  char *fname;
+  char *rtype;
+  char *params;
+  struct partial_proto *partial;
+};
+
+extern int lineno;
+extern void sstring_append _PARAMS((sstring*, sstring*));
+extern void make_sstring_space _PARAMS((sstring*, int));
+extern int skip_spaces _PARAMS((FILE*, int));
+extern int scan_ident _PARAMS((FILE *, sstring *, int));
+extern int scan_string _PARAMS((FILE*, sstring *, int));
+extern int read_upto _PARAMS((FILE*, sstring*, int));
+extern char *xmalloc _PARAMS((unsigned));
+extern char *xrealloc _PARAMS((char *, unsigned));
+extern unsigned long hash _PARAMS((char*));
+
+/* get_token is a simple C lexer. */
+#define IDENTIFIER_TOKEN 300
+#define CHAR_TOKEN 301
+#define STRING_TOKEN 302
+#define INT_TOKEN 303
+extern int get_token _PARAMS ((FILE*, sstring*));
+
+/* Current file and line numer, taking #-directives into account */
+extern int source_lineno;
+extern sstring source_filename;
+/* Current physical line number */
+extern int lineno;