Initial revision

From-SVN: r9191

gcc/cppalloc.c

+/* Part of CPP library.  (memory allocation - xmalloc etc)
+   Copyright (C) 1986, 87, 89, 92, 93, 94, 1995 Free Software Foundation, Inc.
+   Written by Per Bothner, 1994.
+   Based on CCCP program by by Paul Rubin, June 1986
+   Adapted to ANSI C, Richard Stallman, Jan 1987
+
+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.
+
+ In other words, you are welcome to use, share and improve this program.
+ You are forbidden to forbid anyone else to use, share and improve
+ what you give them.   Help stamp out software-hoarding!  */
+
+static void
+memory_full ()
+{
+  fatal ("Memory exhausted.");
+}
+
+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;
+}
+
+char *
+xcalloc (number, size)
+     unsigned number, size;
+{
+  register unsigned total = number * size;
+  register char *ptr = (char *) malloc (total);
+  if (ptr != 0) {
+    if (total > 100)
+      bzero (ptr, total);
+    else {
+      /* It's not too long, so loop, zeroing by longs.
+	 It must be safe because malloc values are always well aligned.  */
+      register long *zp = (long *) ptr;
+      register long *zl = (long *) (ptr + total - 4);
+      register int i = total - 4;
+      while (zp < zl)
+	*zp++ = 0;
+      if (i < 0)
+	i = 0;
+      while (i < total)
+	ptr[i++] = 0;
+    }
+    return ptr;
+  }
+  memory_full ();
+  /*NOTREACHED*/
+  return 0;
+}

gcc/cpperror.c

+/* Default error handlers for CPP Library.
+   Copyright (C) 1986, 87, 89, 92, 93, 94, 1995 Free Software Foundation, Inc.
+   Written by Per Bothner, 1994.
+   Based on CCCP program by by Paul Rubin, June 1986
+   Adapted to ANSI C, Richard Stallman, Jan 1987
+
+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.
+
+ In other words, you are welcome to use, share and improve this program.
+ You are forbidden to forbid anyone else to use, share and improve
+ what you give them.   Help stamp out software-hoarding!  */
+
+#include "cpplib.h"
+#include <stdio.h>
+
+/* This defines "errno" properly for VMS, and gives us EACCES. */
+#include <errno.h>
+#ifndef errno
+extern int errno;
+#endif
+
+#ifndef VMS
+#ifndef HAVE_STRERROR
+extern int sys_nerr;
+#if defined(bsd4_4) || defined(__NetBSD__)
+extern const char *const sys_errlist[];
+#else
+extern char *sys_errlist[];
+#endif
+#else	/* HAVE_STERRROR */
+char *strerror ();
+#endif
+#else	/* VMS */
+char *strerror (int,...);
+#endif
+
+/* Print the file names and line numbers of the #include
+   commands which led to the current file.  */
+
+void
+cpp_print_containing_files (pfile)
+     cpp_reader *pfile;
+{
+  cpp_buffer *ip;
+  int i;
+  int first = 1;
+
+  /* If stack of files hasn't changed since we last printed
+     this info, don't repeat it.  */
+  if (pfile->input_stack_listing_current)
+    return;
+
+  ip = cpp_file_buffer (pfile);
+
+  /* Give up if we don't find a source file.  */
+  if (ip == NULL)
+    return;
+
+  /* Find the other, outer source files.  */
+  while ((ip = CPP_PREV_BUFFER (ip)), ip != CPP_NULL_BUFFER (pfile))
+    {
+      long line, col;
+      cpp_buf_line_and_col (ip, &line, &col);
+      if (ip->fname != NULL)
+	{
+	  if (first)
+	    {
+	      first = 0;
+	      fprintf (stderr, "In file included");
+	    }
+	  else
+	    fprintf (stderr, ",\n                ");
+	}
+
+/* start-sanitize-mpw */
+#ifdef MPW
+      fprintf (stderr, " File \"%s\"; Line %d  # ", ip->nominal_fname, line);
+#else
+/* end-sanitize-mpw */
+      fprintf (stderr, " from %s:%d", ip->nominal_fname, line);
+/* start-sanitize-mpw */
+#endif /* MPW */
+/* end-sanitize-mpw */
+    }
+  if (! first)
+    fprintf (stderr, ":\n");
+
+  /* Record we have printed the status as of this time.  */
+  pfile->input_stack_listing_current = 1;
+}
+
+void
+cpp_print_file_and_line (pfile)
+     cpp_reader *pfile;
+{
+  cpp_buffer *ip = cpp_file_buffer (pfile);
+
+  if (ip != NULL)
+    {
+      long line, col;
+      cpp_buf_line_and_col (ip, &line, &col);
+      if (pfile->show_column)
+	fprintf (stderr, "%s:%d:%d: ", ip->nominal_fname, line, col);
+      else
+	fprintf (stderr, "%s:%d: ", ip->nominal_fname, line);
+    }
+}
+
+void
+cpp_error (pfile, msg, arg1, arg2, arg3)
+     cpp_reader *pfile;
+     char *msg;
+     char *arg1, *arg2, *arg3;
+{
+  cpp_print_containing_files (pfile);
+  cpp_print_file_and_line (pfile);
+  fprintf (stderr, msg, arg1, arg2, arg3);
+  fprintf (stderr, "\n");
+  pfile->errors++;
+}
+
+/* Print error message but don't count it.  */
+
+void
+cpp_warning (pfile, msg, arg1, arg2, arg3)
+     cpp_reader *pfile;
+     char *msg;
+     char *arg1, *arg2, *arg3;
+{
+  if (CPP_OPTIONS (pfile)->inhibit_warnings)
+    return;
+
+  if (CPP_OPTIONS (pfile)->warnings_are_errors)
+    pfile->errors++;
+
+  cpp_print_containing_files (pfile);
+  cpp_print_file_and_line (pfile);
+  fprintf (stderr, "warning: ");
+  fprintf (stderr, msg, arg1, arg2, arg3);
+  fprintf (stderr, "\n");
+}
+
+void
+cpp_error_with_line (pfile, line, msg, arg1, arg2, arg3)
+     cpp_reader *pfile;
+     int line;
+     char *msg;
+     char *arg1, *arg2, *arg3;
+{
+  int i;
+  cpp_buffer *ip = cpp_file_buffer (pfile);
+
+  cpp_print_containing_files (pfile);
+
+  if (ip != NULL)
+    fprintf (stderr, "%s:%d: ", ip->nominal_fname, line);
+
+  fprintf (stderr, msg, arg1, arg2, arg3);
+  fprintf (stderr, "\n");
+  pfile->errors++;
+}
+
+void
+cpp_warning_with_line (pfile, line, msg, arg1, arg2, arg3)
+     cpp_reader *pfile;
+     int line;
+     char *msg;
+     char *arg1, *arg2, *arg3;
+{
+  int i;
+  cpp_buffer *ip;
+
+  if (CPP_OPTIONS (pfile)->inhibit_warnings)
+    return;
+
+  if (CPP_OPTIONS (pfile)->warnings_are_errors)
+    pfile->errors++;
+
+  cpp_print_containing_files (pfile);
+
+  ip = cpp_file_buffer (pfile);
+
+  if (ip != NULL)
+    fprintf (stderr, "%s:%d: ", ip->nominal_fname, line);
+  fprintf (stderr, "warning: ");
+  fprintf (stderr, msg, arg1, arg2, arg3);
+  fprintf (stderr, "\n");
+}
+
+/* Print an error message and maybe count it.  */
+
+void
+cpp_pedwarn (pfile, msg, arg1, arg2, arg3)
+     cpp_reader *pfile;
+     char *msg;
+     char *arg1, *arg2, *arg3;
+{
+  if (CPP_OPTIONS (pfile)->pedantic_errors)
+    cpp_error (pfile, msg, arg1, arg2, arg3);
+  else
+    cpp_warning (pfile, msg, arg1, arg2, arg3);
+}
+
+void
+cpp_pedwarn_with_line (pfile, line, msg, arg1, arg2, arg3)
+     cpp_reader *pfile;
+     int line;
+     char *msg;
+     char *arg1, *arg2, *arg3;
+{
+  if (CPP_OPTIONS (pfile)->pedantic_errors)
+    cpp_error_with_line (pfile, line, msg, arg1, arg2, arg3);
+  else
+    cpp_warning_with_line (pfile, line, msg, arg1, arg2, arg3);
+}
+
+/* Report a warning (or an error if pedantic_errors)
+   giving specified file name and line number, not current.  */
+
+void
+cpp_pedwarn_with_file_and_line (pfile, file, line, msg, arg1, arg2, arg3)
+     cpp_reader *pfile;
+     char *file;
+     int line;
+     char *msg;
+     char *arg1, *arg2, *arg3;
+{
+  if (!CPP_OPTIONS (pfile)->pedantic_errors
+      && CPP_OPTIONS (pfile)->inhibit_warnings)
+    return;
+  if (file != NULL)
+    fprintf (stderr, "%s:%d: ", file, line);
+  if (CPP_OPTIONS (pfile)->pedantic_errors)
+    pfile->errors++;
+  else
+    fprintf (stderr, "warning: ");
+  fprintf (stderr, msg, arg1, arg2, arg3);
+  fprintf (stderr, "\n");
+}
+
+void
+fatal (str, arg)
+     char *str, *arg;
+{
+  fprintf (stderr, "%s: ", progname);
+  fprintf (stderr, str, arg);
+  fprintf (stderr, "\n");
+  exit (FAILURE_EXIT_CODE);
+}
+
+
+/*
+ * my_strerror - return the descriptive text associated with an `errno' code.
+ */
+
+char *
+my_strerror (errnum)
+     int errnum;
+{
+  char *result;
+
+#ifndef VMS
+#ifndef HAVE_STRERROR
+  result = (char *) ((errnum < sys_nerr) ? sys_errlist[errnum] : 0);
+#else
+  result = strerror (errnum);
+#endif
+#else	/* VMS */
+  /* VAXCRTL's strerror() takes an optional second argument, which only
+     matters when the first argument is EVMSERR.  However, it's simplest
+     just to pass it unconditionally.  `vaxc$errno' is declared in
+     <errno.h>, and maintained by the library in parallel with `errno'.
+     We assume that caller's `errnum' either matches the last setting of
+     `errno' by the library or else does not have the value `EVMSERR'.  */
+
+  result = strerror (errnum, vaxc$errno);
+#endif
+
+  if (!result)
+    result = "undocumented I/O error";
+
+  return result;
+}
+
+/* Error including a message from `errno'.  */
+
+void
+cpp_error_from_errno (pfile, name)
+     cpp_reader *pfile;
+     char *name;
+{
+  int i;
+  cpp_buffer *ip = cpp_file_buffer (pfile);
+
+  cpp_print_containing_files (pfile);
+
+  if (ip != NULL)
+    fprintf (stderr, "%s:%d: ", ip->nominal_fname, ip->lineno);
+
+  fprintf (stderr, "%s: %s\n", name, my_strerror (errno));
+
+  pfile->errors++;
+}
+
+void
+cpp_perror_with_name (pfile, name)
+     cpp_reader *pfile;
+     char *name;
+{
+  fprintf (stderr, "%s: ", progname);
+  fprintf (stderr, "%s: %s\n", name, my_strerror (errno));
+  pfile->errors++;
+}
+
+void
+cpp_pfatal_with_name (pfile, name)
+     cpp_reader *pfile;
+     char *name;
+{
+  cpp_perror_with_name (pfile, name);
+#ifdef VMS
+  exit (vaxc$errno);
+#else
+  exit (FAILURE_EXIT_CODE);
+#endif
+}

gcc/cpphash.c

+/* Part of CPP library.  (Macro hash table support.)
+   Copyright (C) 1986, 87, 89, 92, 93, 94, 1995 Free Software Foundation, Inc.
+   Written by Per Bothner, 1994.
+   Based on CCCP program by by Paul Rubin, June 1986
+   Adapted to ANSI C, Richard Stallman, Jan 1987
+
+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.
+
+ In other words, you are welcome to use, share and improve this program.
+ You are forbidden to forbid anyone else to use, share and improve
+ what you give them.   Help stamp out software-hoarding!  */
+
+#include "cpplib.h"
+#include "cpphash.h"
+
+/* Define a generic NULL if one hasn't already been defined.  */
+
+#ifndef NULL
+#define NULL 0
+#endif
+
+/*
+ * return hash function on name.  must be compatible with the one
+ * computed a step at a time, elsewhere
+ */
+int
+hashf (name, len, hashsize)
+     register const U_CHAR *name;
+     register int len;
+     int hashsize;
+{
+  register int r = 0;
+
+  while (len--)
+    r = HASHSTEP (r, *name++);
+
+  return MAKE_POS (r) % hashsize;
+}
+
+/*
+ * find the most recent hash node for name name (ending with first
+ * non-identifier char) installed by install
+ *
+ * If LEN is >= 0, it is the length of the name.
+ * Otherwise, compute the length by scanning the entire name.
+ *
+ * If HASH is >= 0, it is the precomputed hash code.
+ * Otherwise, compute the hash code.
+ */
+HASHNODE *
+cpp_lookup (pfile, name, len, hash)
+     struct parse_file *pfile;
+     const U_CHAR *name;
+     int len;
+     int hash;
+{
+  register const U_CHAR *bp;
+  register HASHNODE *bucket;
+
+  if (len < 0)
+    {
+      for (bp = name; is_idchar[*bp]; bp++) ;
+      len = bp - name;
+    }
+
+  if (hash < 0)
+    hash = hashf (name, len, HASHSIZE);
+
+  bucket = hashtab[hash];
+  while (bucket) {
+    if (bucket->length == len && strncmp (bucket->name, name, len) == 0)
+      return bucket;
+    bucket = bucket->next;
+  }
+  return (HASHNODE*) 0;
+}
+
+/*
+ * Delete a hash node.  Some weirdness to free junk from macros.
+ * More such weirdness will have to be added if you define more hash
+ * types that need it.
+ */
+
+/* Note that the DEFINITION of a macro is removed from the hash table
+   but its storage is not freed.  This would be a storage leak
+   except that it is not reasonable to keep undefining and redefining
+   large numbers of macros many times.
+   In any case, this is necessary, because a macro can be #undef'd
+   in the middle of reading the arguments to a call to it.
+   If #undef freed the DEFINITION, that would crash.  */
+
+void
+delete_macro (hp)
+     HASHNODE *hp;
+{
+
+  if (hp->prev != NULL)
+    hp->prev->next = hp->next;
+  if (hp->next != NULL)
+    hp->next->prev = hp->prev;
+
+  /* make sure that the bucket chain header that
+     the deleted guy was on points to the right thing afterwards. */
+  if (hp == *hp->bucket_hdr)
+    *hp->bucket_hdr = hp->next;
+
+#if 0
+  if (hp->type == T_MACRO) {
+    DEFINITION *d = hp->value.defn;
+    struct reflist *ap, *nextap;
+
+    for (ap = d->pattern; ap != NULL; ap = nextap) {
+      nextap = ap->next;
+      free (ap);
+    }
+    free (d);
+  }
+#endif
+  free (hp);
+}
+/*
+ * install a name in the main hash table, even if it is already there.
+ *   name stops with first non alphanumeric, except leading '#'.
+ * caller must check against redefinition if that is desired.
+ * delete_macro () removes things installed by install () in fifo order.
+ * this is important because of the `defined' special symbol used
+ * in #if, and also if pushdef/popdef directives are ever implemented.
+ *
+ * If LEN is >= 0, it is the length of the name.
+ * Otherwise, compute the length by scanning the entire name.
+ *
+ * If HASH is >= 0, it is the precomputed hash code.
+ * Otherwise, compute the hash code.
+ */
+HASHNODE *
+install (name, len, type, ivalue, value, hash)
+     U_CHAR *name;
+     int len;
+     enum node_type type;
+     int ivalue;
+     char *value;
+     int hash;
+{
+  register HASHNODE *hp;
+  register int i, bucket;
+  register U_CHAR *p, *q;
+
+  if (len < 0) {
+    p = name;
+    while (is_idchar[*p])
+      p++;
+    len = p - name;
+  }
+
+  if (hash < 0)
+    hash = hashf (name, len, HASHSIZE);
+
+  i = sizeof (HASHNODE) + len + 1;
+  hp = (HASHNODE *) xmalloc (i);
+  bucket = hash;
+  hp->bucket_hdr = &hashtab[bucket];
+  hp->next = hashtab[bucket];
+  hashtab[bucket] = hp;
+  hp->prev = NULL;
+  if (hp->next != NULL)
+    hp->next->prev = hp;
+  hp->type = type;
+  hp->length = len;
+  if (hp->type == T_CONST)
+    hp->value.ival = ivalue;
+  else
+    hp->value.cpval = value;
+  hp->name = ((U_CHAR *) hp) + sizeof (HASHNODE);
+  p = hp->name;
+  q = name;
+  for (i = 0; i < len; i++)
+    *p++ = *q++;
+  hp->name[len] = 0;
+  return hp;
+}

gcc/cpphash.h

+enum node_type;
+
+/* different kinds of things that can appear in the value field
+   of a hash node.  Actually, this may be useless now. */
+union hashval {
+  int ival;
+  char *cpval;
+  DEFINITION *defn;
+#if 0
+  KEYDEF *keydef;
+#endif
+};
+
+struct hashnode {
+  struct hashnode *next;	/* double links for easy deletion */
+  struct hashnode *prev;
+  struct hashnode **bucket_hdr;	/* also, a back pointer to this node's hash
+				   chain is kept, in case the node is the head
+				   of the chain and gets deleted. */
+  enum node_type type;		/* type of special token */
+  int length;			/* length of token, for quick comparison */
+  U_CHAR *name;			/* the actual name */
+  union hashval value;		/* pointer to expansion, or whatever */
+};
+
+typedef struct hashnode HASHNODE;
+
+/* Some definitions for the hash table.  The hash function MUST be
+   computed as shown in hashf () below.  That is because the rescan
+   loop computes the hash value `on the fly' for most tokens,
+   in order to avoid the overhead of a lot of procedure calls to
+   the hashf () function.  Hashf () only exists for the sake of
+   politeness, for use when speed isn't so important. */
+
+#define HASHSIZE 1403
+static HASHNODE *hashtab[HASHSIZE];
+#define HASHSTEP(old, c) ((old << 2) + c)
+#define MAKE_POS(v) (v & 0x7fffffff) /* make number positive */
+
+extern HASHNODE* install PARAMS ((U_CHAR*,int,enum node_type, int,char*,int));

gcc/cppmain.c

+/* CPP main program, using CPP Library.
+   Copyright (C) 1995 Free Software Foundation, Inc.
+   Written by Per Bothner, 1994-95.
+
+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.
+
+ In other words, you are welcome to use, share and improve this program.
+ You are forbidden to forbid anyone else to use, share and improve
+ what you give them.   Help stamp out software-hoarding!  */
+
+#include "cpplib.h"
+#include <stdio.h>
+
+extern char *getenv ();
+
+cpp_reader parse_in;
+cpp_options options;
+
+/* More 'friendly' abort that prints the line and file.
+   config.h can #define abort fancy_abort if you like that sort of thing.  */
+
+void
+fancy_abort ()
+{
+  fatal ("Internal gcc abort.");
+}
+
+
+int
+main (argc, argv)
+     int argc;
+     char **argv;
+{
+  char *p;
+  int i;
+  int argi = 1;  /* Next argument to handle. */
+  struct cpp_options *opts = &options;
+
+  p = argv[0] + strlen (argv[0]);
+  while (p != argv[0] && p[-1] != '/') --p;
+  progname = p;
+
+  init_parse_file (&parse_in);
+  parse_in.data = opts;
+
+  init_parse_options (opts);
+  
+  argi += cpp_handle_options (&parse_in, argc - argi , argv + argi);
+  if (argi < argc)
+    fatal ("Invalid option `%s'", argv[argi]);
+  parse_in.show_column = 1;
+
+  i = push_parse_file (&parse_in, opts->in_fname);
+  if (i != SUCCESS_EXIT_CODE)
+    return i;
+
+  /* Now that we know the input file is valid, open the output.  */
+
+  if (!opts->out_fname || !strcmp (opts->out_fname, ""))
+    opts->out_fname = "stdout";
+  else if (! freopen (opts->out_fname, "w", stdout))
+    cpp_pfatal_with_name (&parse_in, opts->out_fname);
+
+  for (;;)
+    {
+#if 0
+      int ch = PARSE_GETC (&parse_in);
+      if (ch < 0)
+	break;
+      if (! opts->no_output)
+	putchar (ch);
+#else
+      enum cpp_token kind;
+      if (! opts->no_output)
+	{
+	  fwrite (parse_in.token_buffer, 1, CPP_WRITTEN (&parse_in), stdout);
+	}
+      parse_in.limit = parse_in.token_buffer;
+      kind = cpp_get_token (&parse_in);
+      if (kind == CPP_EOF)
+	break;
+#endif
+    }
+
+  cpp_finish (&parse_in);
+
+  if (parse_in.errors)
+    exit (FAILURE_EXIT_CODE);
+  exit (SUCCESS_EXIT_CODE);
+}