4535 lines
138 KiB
C
4535 lines
138 KiB
C
/* Protoize program - Original version by Ron Guilmette (rfg@segfault.us.com).
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Copyright (C) 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
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1999, 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
|
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Software Foundation; either version 2, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING. If not, write to the Free
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Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301, USA. */
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#include "config.h"
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#include "system.h"
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#include "coretypes.h"
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#include "tm.h"
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#include "intl.h"
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#include "cppdefault.h"
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#include <setjmp.h>
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#include <signal.h>
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#if ! defined( SIGCHLD ) && defined( SIGCLD )
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# define SIGCHLD SIGCLD
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#endif
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#include "version.h"
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/* Include getopt.h for the sake of getopt_long. */
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#include "getopt.h"
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/* Macro to see if the path elements match. */
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#ifdef HAVE_DOS_BASED_FILE_SYSTEM
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#define IS_SAME_PATH_CHAR(a,b) (TOUPPER (a) == TOUPPER (b))
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#else
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#define IS_SAME_PATH_CHAR(a,b) ((a) == (b))
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#endif
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/* Macro to see if the paths match. */
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#define IS_SAME_PATH(a,b) (FILENAME_CMP (a, b) == 0)
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/* Suffix for aux-info files. */
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#ifdef __MSDOS__
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#define AUX_INFO_SUFFIX "X"
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#else
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#define AUX_INFO_SUFFIX ".X"
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#endif
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/* Suffix for saved files. */
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#ifdef __MSDOS__
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#define SAVE_SUFFIX "sav"
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#else
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#define SAVE_SUFFIX ".save"
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#endif
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/* Suffix for renamed C++ files. */
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#ifdef HAVE_DOS_BASED_FILE_SYSTEM
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#define CPLUS_FILE_SUFFIX "cc"
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#else
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#define CPLUS_FILE_SUFFIX "C"
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#endif
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static void usage (void) ATTRIBUTE_NORETURN;
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static void aux_info_corrupted (void) ATTRIBUTE_NORETURN;
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static void declare_source_confusing (const char *) ATTRIBUTE_NORETURN;
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static const char *shortpath (const char *, const char *);
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static void notice (const char *, ...) ATTRIBUTE_PRINTF_1;
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static char *savestring (const char *, unsigned int);
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static char *dupnstr (const char *, size_t);
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static int safe_read (int, void *, int);
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static void safe_write (int, void *, int, const char *);
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static void save_pointers (void);
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static void restore_pointers (void);
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static int is_id_char (int);
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static int in_system_include_dir (const char *);
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static int directory_specified_p (const char *);
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static int file_excluded_p (const char *);
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static char *unexpand_if_needed (const char *);
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static char *abspath (const char *, const char *);
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static void check_aux_info (int);
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static const char *find_corresponding_lparen (const char *);
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static int referenced_file_is_newer (const char *, time_t);
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static void save_def_or_dec (const char *, int);
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static void munge_compile_params (const char *);
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static int gen_aux_info_file (const char *);
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static void process_aux_info_file (const char *, int, int);
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static int identify_lineno (const char *);
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static void check_source (int, const char *);
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static const char *seek_to_line (int);
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static const char *forward_to_next_token_char (const char *);
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static void output_bytes (const char *, size_t);
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static void output_string (const char *);
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static void output_up_to (const char *);
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static int other_variable_style_function (const char *);
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static const char *find_rightmost_formals_list (const char *);
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static void do_cleaning (char *, const char *);
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static const char *careful_find_l_paren (const char *);
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static void do_processing (void);
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/* Look for these where the `const' qualifier is intentionally cast aside. */
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#define NONCONST
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/* Define a default place to find the SYSCALLS.X file. */
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#ifndef UNPROTOIZE
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#ifndef STANDARD_EXEC_PREFIX
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#define STANDARD_EXEC_PREFIX "/usr/local/lib/gcc-lib/"
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#endif /* !defined STANDARD_EXEC_PREFIX */
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static const char * const standard_exec_prefix = STANDARD_EXEC_PREFIX;
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static const char * const target_machine = DEFAULT_TARGET_MACHINE;
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static const char * const target_version = DEFAULT_TARGET_VERSION;
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#endif /* !defined (UNPROTOIZE) */
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/* Suffix of aux_info files. */
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static const char * const aux_info_suffix = AUX_INFO_SUFFIX;
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/* String to attach to filenames for saved versions of original files. */
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static const char * const save_suffix = SAVE_SUFFIX;
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#ifndef UNPROTOIZE
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/* String to attach to C filenames renamed to C++. */
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static const char * const cplus_suffix = CPLUS_FILE_SUFFIX;
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/* File name of the file which contains descriptions of standard system
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routines. Note that we never actually do anything with this file per se,
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but we do read in its corresponding aux_info file. */
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static const char syscalls_filename[] = "SYSCALLS.c";
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/* Default place to find the above file. */
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static const char * default_syscalls_dir;
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/* Variable to hold the complete absolutized filename of the SYSCALLS.c.X
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file. */
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static char * syscalls_absolute_filename;
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#endif /* !defined (UNPROTOIZE) */
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/* Type of the structure that holds information about macro unexpansions. */
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struct unexpansion_struct {
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const char *const expanded;
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const char *const contracted;
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};
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typedef struct unexpansion_struct unexpansion;
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/* A table of conversions that may need to be made for some (stupid) older
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operating systems where these types are preprocessor macros rather than
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typedefs (as they really ought to be).
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WARNING: The contracted forms must be as small (or smaller) as the
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expanded forms, or else havoc will ensue. */
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static const unexpansion unexpansions[] = {
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{ "struct _iobuf", "FILE" },
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{ 0, 0 }
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};
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/* The number of "primary" slots in the hash tables for filenames and for
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function names. This can be as big or as small as you like, except that
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it must be a power of two. */
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#define HASH_TABLE_SIZE (1 << 9)
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/* Bit mask to use when computing hash values. */
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static const int hash_mask = (HASH_TABLE_SIZE - 1);
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/* Datatype for lists of directories or filenames. */
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struct string_list
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{
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const char *name;
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struct string_list *next;
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};
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static struct string_list *string_list_cons (const char *,
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struct string_list *);
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/* List of directories in which files should be converted. */
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struct string_list *directory_list;
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/* List of file names which should not be converted.
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A file is excluded if the end of its name, following a /,
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matches one of the names in this list. */
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struct string_list *exclude_list;
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/* The name of the other style of variable-number-of-parameters functions
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(i.e. the style that we want to leave unconverted because we don't yet
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know how to convert them to this style. This string is used in warning
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messages. */
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/* Also define here the string that we can search for in the parameter lists
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taken from the .X files which will unambiguously indicate that we have
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found a varargs style function. */
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#ifdef UNPROTOIZE
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static const char * const other_var_style = "stdarg";
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#else /* !defined (UNPROTOIZE) */
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static const char * const other_var_style = "varargs";
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static const char *varargs_style_indicator = "va_alist";
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#endif /* !defined (UNPROTOIZE) */
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/* The following two types are used to create hash tables. In this program,
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there are two hash tables which are used to store and quickly lookup two
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different classes of strings. The first type of strings stored in the
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first hash table are absolute filenames of files which protoize needs to
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know about. The second type of strings (stored in the second hash table)
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are function names. It is this second class of strings which really
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inspired the use of the hash tables, because there may be a lot of them. */
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typedef struct hash_table_entry_struct hash_table_entry;
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/* Do some typedefs so that we don't have to write "struct" so often. */
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typedef struct def_dec_info_struct def_dec_info;
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typedef struct file_info_struct file_info;
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typedef struct f_list_chain_item_struct f_list_chain_item;
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#ifndef UNPROTOIZE
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static int is_syscalls_file (const file_info *);
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static void rename_c_file (const hash_table_entry *);
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static const def_dec_info *find_extern_def (const def_dec_info *,
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const def_dec_info *);
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static const def_dec_info *find_static_definition (const def_dec_info *);
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static void connect_defs_and_decs (const hash_table_entry *);
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static void add_local_decl (const def_dec_info *, const char *);
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static void add_global_decls (const file_info *, const char *);
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#endif /* ! UNPROTOIZE */
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static int needs_to_be_converted (const file_info *);
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static void visit_each_hash_node (const hash_table_entry *,
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void (*)(const hash_table_entry *));
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static hash_table_entry *add_symbol (hash_table_entry *, const char *);
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static hash_table_entry *lookup (hash_table_entry *, const char *);
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static void free_def_dec (def_dec_info *);
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static file_info *find_file (const char *, int);
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static void reverse_def_dec_list (const hash_table_entry *);
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static void edit_fn_declaration (const def_dec_info *, const char *);
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static int edit_formals_lists (const char *, unsigned int,
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const def_dec_info *);
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static void edit_fn_definition (const def_dec_info *, const char *);
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static void scan_for_missed_items (const file_info *);
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static void edit_file (const hash_table_entry *);
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/* In the struct below, note that the "_info" field has two different uses
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depending on the type of hash table we are in (i.e. either the filenames
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hash table or the function names hash table). In the filenames hash table
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the info fields of the entries point to the file_info struct which is
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associated with each filename (1 per filename). In the function names
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hash table, the info field points to the head of a singly linked list of
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def_dec_info entries which are all defs or decs of the function whose
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name is pointed to by the "symbol" field. Keeping all of the defs/decs
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for a given function name on a special list specifically for that function
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name makes it quick and easy to find out all of the important information
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about a given (named) function. */
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struct hash_table_entry_struct {
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hash_table_entry * hash_next; /* -> to secondary entries */
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const char * symbol; /* -> to the hashed string */
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union {
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const def_dec_info * _ddip;
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file_info * _fip;
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} _info;
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};
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#define ddip _info._ddip
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#define fip _info._fip
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/* Define a type specifically for our two hash tables. */
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typedef hash_table_entry hash_table[HASH_TABLE_SIZE];
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/* The following struct holds all of the important information about any
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single filename (e.g. file) which we need to know about. */
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struct file_info_struct {
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const hash_table_entry * hash_entry; /* -> to associated hash entry */
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const def_dec_info * defs_decs; /* -> to chain of defs/decs */
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time_t mtime; /* Time of last modification. */
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};
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/* Due to the possibility that functions may return pointers to functions,
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(which may themselves have their own parameter lists) and due to the
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fact that returned pointers-to-functions may be of type "pointer-to-
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function-returning-pointer-to-function" (ad nauseum) we have to keep
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an entire chain of ANSI style formal parameter lists for each function.
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Normally, for any given function, there will only be one formals list
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on the chain, but you never know.
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Note that the head of each chain of formals lists is pointed to by the
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`f_list_chain' field of the corresponding def_dec_info record.
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For any given chain, the item at the head of the chain is the *leftmost*
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parameter list seen in the actual C language function declaration. If
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there are other members of the chain, then these are linked in left-to-right
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order from the head of the chain. */
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struct f_list_chain_item_struct {
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const f_list_chain_item * chain_next; /* -> to next item on chain */
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const char * formals_list; /* -> to formals list string */
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};
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/* The following struct holds all of the important information about any
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single function definition or declaration which we need to know about.
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Note that for unprotoize we don't need to know very much because we
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never even create records for stuff that we don't intend to convert
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(like for instance defs and decs which are already in old K&R format
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and "implicit" function declarations). */
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struct def_dec_info_struct {
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const def_dec_info * next_in_file; /* -> to rest of chain for file */
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file_info * file; /* -> file_info for containing file */
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int line; /* source line number of def/dec */
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const char * ansi_decl; /* -> left end of ansi decl */
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hash_table_entry * hash_entry; /* -> hash entry for function name */
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unsigned int is_func_def; /* = 0 means this is a declaration */
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const def_dec_info * next_for_func; /* -> to rest of chain for func name */
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unsigned int f_list_count; /* count of formals lists we expect */
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char prototyped; /* = 0 means already prototyped */
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#ifndef UNPROTOIZE
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const f_list_chain_item * f_list_chain; /* -> chain of formals lists */
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const def_dec_info * definition; /* -> def/dec containing related def */
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char is_static; /* = 0 means visibility is "extern" */
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char is_implicit; /* != 0 for implicit func decl's */
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char written; /* != 0 means written for implicit */
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#else /* !defined (UNPROTOIZE) */
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const char * formal_names; /* -> to list of names of formals */
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const char * formal_decls; /* -> to string of formal declarations */
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||
#endif /* !defined (UNPROTOIZE) */
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||
};
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||
|
||
/* Pointer to the tail component of the filename by which this program was
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||
invoked. Used everywhere in error and warning messages. */
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||
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||
static const char *pname;
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||
|
||
/* Error counter. Will be nonzero if we should give up at the next convenient
|
||
stopping point. */
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||
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||
static int errors = 0;
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||
|
||
/* Option flags. */
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||
/* ??? The variables are not marked static because some of them have
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||
the same names as gcc variables declared in options.h. */
|
||
/* ??? These comments should say what the flag mean as well as the options
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||
that set them. */
|
||
|
||
/* File name to use for running gcc. Allows GCC 2 to be named
|
||
something other than gcc. */
|
||
static const char *compiler_file_name = "gcc";
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||
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||
int version_flag = 0; /* Print our version number. */
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||
int quiet_flag = 0; /* Don't print messages normally. */
|
||
int nochange_flag = 0; /* Don't convert, just say what files
|
||
we would have converted. */
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||
int nosave_flag = 0; /* Don't save the old version. */
|
||
int keep_flag = 0; /* Don't delete the .X files. */
|
||
static const char ** compile_params = 0; /* Option string for gcc. */
|
||
#ifdef UNPROTOIZE
|
||
static const char *indent_string = " "; /* Indentation for newly
|
||
inserted parm decls. */
|
||
#else /* !defined (UNPROTOIZE) */
|
||
int local_flag = 0; /* Insert new local decls (when?). */
|
||
int global_flag = 0; /* set by -g option */
|
||
int cplusplus_flag = 0; /* Rename converted files to *.C. */
|
||
static const char *nondefault_syscalls_dir = 0; /* Dir to look for
|
||
SYSCALLS.c.X in. */
|
||
#endif /* !defined (UNPROTOIZE) */
|
||
|
||
/* An index into the compile_params array where we should insert the source
|
||
file name when we are ready to exec the C compiler. A zero value indicates
|
||
that we have not yet called munge_compile_params. */
|
||
|
||
static int input_file_name_index = 0;
|
||
|
||
/* An index into the compile_params array where we should insert the filename
|
||
for the aux info file, when we run the C compiler. */
|
||
static int aux_info_file_name_index = 0;
|
||
|
||
/* Count of command line arguments which were "filename" arguments. */
|
||
|
||
static int n_base_source_files = 0;
|
||
|
||
/* Points to a malloc'ed list of pointers to all of the filenames of base
|
||
source files which were specified on the command line. */
|
||
|
||
static const char **base_source_filenames;
|
||
|
||
/* Line number of the line within the current aux_info file that we
|
||
are currently processing. Used for error messages in case the prototypes
|
||
info file is corrupted somehow. */
|
||
|
||
static int current_aux_info_lineno;
|
||
|
||
/* Pointer to the name of the source file currently being converted. */
|
||
|
||
static const char *convert_filename;
|
||
|
||
/* Pointer to relative root string (taken from aux_info file) which indicates
|
||
where directory the user was in when he did the compilation step that
|
||
produced the containing aux_info file. */
|
||
|
||
static const char *invocation_filename;
|
||
|
||
/* Pointer to the base of the input buffer that holds the original text for the
|
||
source file currently being converted. */
|
||
|
||
static const char *orig_text_base;
|
||
|
||
/* Pointer to the byte just beyond the end of the input buffer that holds the
|
||
original text for the source file currently being converted. */
|
||
|
||
static const char *orig_text_limit;
|
||
|
||
/* Pointer to the base of the input buffer that holds the cleaned text for the
|
||
source file currently being converted. */
|
||
|
||
static const char *clean_text_base;
|
||
|
||
/* Pointer to the byte just beyond the end of the input buffer that holds the
|
||
cleaned text for the source file currently being converted. */
|
||
|
||
static const char *clean_text_limit;
|
||
|
||
/* Pointer to the last byte in the cleaned text buffer that we have already
|
||
(virtually) copied to the output buffer (or decided to ignore). */
|
||
|
||
static const char * clean_read_ptr;
|
||
|
||
/* Pointer to the base of the output buffer that holds the replacement text
|
||
for the source file currently being converted. */
|
||
|
||
static char *repl_text_base;
|
||
|
||
/* Pointer to the byte just beyond the end of the output buffer that holds the
|
||
replacement text for the source file currently being converted. */
|
||
|
||
static char *repl_text_limit;
|
||
|
||
/* Pointer to the last byte which has been stored into the output buffer.
|
||
The next byte to be stored should be stored just past where this points
|
||
to. */
|
||
|
||
static char * repl_write_ptr;
|
||
|
||
/* Pointer into the cleaned text buffer for the source file we are currently
|
||
converting. This points to the first character of the line that we last
|
||
did a "seek_to_line" to (see below). */
|
||
|
||
static const char *last_known_line_start;
|
||
|
||
/* Number of the line (in the cleaned text buffer) that we last did a
|
||
"seek_to_line" to. Will be one if we just read a new source file
|
||
into the cleaned text buffer. */
|
||
|
||
static int last_known_line_number;
|
||
|
||
/* The filenames hash table. */
|
||
|
||
static hash_table filename_primary;
|
||
|
||
/* The function names hash table. */
|
||
|
||
static hash_table function_name_primary;
|
||
|
||
/* The place to keep the recovery address which is used only in cases where
|
||
we get hopelessly confused by something in the cleaned original text. */
|
||
|
||
static jmp_buf source_confusion_recovery;
|
||
|
||
/* A pointer to the current directory filename (used by abspath). */
|
||
|
||
static char *cwd_buffer;
|
||
|
||
/* A place to save the read pointer until we are sure that an individual
|
||
attempt at editing will succeed. */
|
||
|
||
static const char * saved_clean_read_ptr;
|
||
|
||
/* A place to save the write pointer until we are sure that an individual
|
||
attempt at editing will succeed. */
|
||
|
||
static char * saved_repl_write_ptr;
|
||
|
||
/* Translate and output an error message. */
|
||
static void
|
||
notice (const char *cmsgid, ...)
|
||
{
|
||
va_list ap;
|
||
|
||
va_start (ap, cmsgid);
|
||
vfprintf (stderr, _(cmsgid), ap);
|
||
va_end (ap);
|
||
}
|
||
|
||
|
||
/* Make a copy of a string INPUT with size SIZE. */
|
||
|
||
static char *
|
||
savestring (const char *input, unsigned int size)
|
||
{
|
||
char *output = xmalloc (size + 1);
|
||
strcpy (output, input);
|
||
return output;
|
||
}
|
||
|
||
|
||
/* Make a duplicate of the first N bytes of a given string in a newly
|
||
allocated area. */
|
||
|
||
static char *
|
||
dupnstr (const char *s, size_t n)
|
||
{
|
||
char *ret_val = xmalloc (n + 1);
|
||
|
||
strncpy (ret_val, s, n);
|
||
ret_val[n] = '\0';
|
||
return ret_val;
|
||
}
|
||
|
||
/* Read LEN bytes at PTR from descriptor DESC, for file FILENAME,
|
||
retrying if necessary. Return the actual number of bytes read. */
|
||
|
||
static int
|
||
safe_read (int desc, void *ptr, int len)
|
||
{
|
||
int left = len;
|
||
while (left > 0) {
|
||
int nchars = read (desc, ptr, left);
|
||
if (nchars < 0)
|
||
{
|
||
#ifdef EINTR
|
||
if (errno == EINTR)
|
||
continue;
|
||
#endif
|
||
return nchars;
|
||
}
|
||
if (nchars == 0)
|
||
break;
|
||
/* Arithmetic on void pointers is a gcc extension. */
|
||
ptr = (char *) ptr + nchars;
|
||
left -= nchars;
|
||
}
|
||
return len - left;
|
||
}
|
||
|
||
/* Write LEN bytes at PTR to descriptor DESC,
|
||
retrying if necessary, and treating any real error as fatal. */
|
||
|
||
static void
|
||
safe_write (int desc, void *ptr, int len, const char *out_fname)
|
||
{
|
||
while (len > 0) {
|
||
int written = write (desc, ptr, len);
|
||
if (written < 0)
|
||
{
|
||
int errno_val = errno;
|
||
#ifdef EINTR
|
||
if (errno_val == EINTR)
|
||
continue;
|
||
#endif
|
||
notice ("%s: error writing file '%s': %s\n",
|
||
pname, shortpath (NULL, out_fname), xstrerror (errno_val));
|
||
return;
|
||
}
|
||
/* Arithmetic on void pointers is a gcc extension. */
|
||
ptr = (char *) ptr + written;
|
||
len -= written;
|
||
}
|
||
}
|
||
|
||
/* Get setup to recover in case the edit we are about to do goes awry. */
|
||
|
||
static void
|
||
save_pointers (void)
|
||
{
|
||
saved_clean_read_ptr = clean_read_ptr;
|
||
saved_repl_write_ptr = repl_write_ptr;
|
||
}
|
||
|
||
/* Call this routine to recover our previous state whenever something looks
|
||
too confusing in the source code we are trying to edit. */
|
||
|
||
static void
|
||
restore_pointers (void)
|
||
{
|
||
clean_read_ptr = saved_clean_read_ptr;
|
||
repl_write_ptr = saved_repl_write_ptr;
|
||
}
|
||
|
||
/* Return true if the given character is a valid identifier character. */
|
||
|
||
static int
|
||
is_id_char (int ch)
|
||
{
|
||
return (ISIDNUM (ch) || (ch == '$'));
|
||
}
|
||
|
||
/* Give a message indicating the proper way to invoke this program and then
|
||
exit with nonzero status. */
|
||
|
||
static void
|
||
usage (void)
|
||
{
|
||
#ifdef UNPROTOIZE
|
||
notice ("%s: usage '%s [ -VqfnkN ] [ -i <istring> ] [ filename ... ]'\n",
|
||
pname, pname);
|
||
#else /* !defined (UNPROTOIZE) */
|
||
notice ("%s: usage '%s [ -VqfnkNlgC ] [ -B <dirname> ] [ filename ... ]'\n",
|
||
pname, pname);
|
||
#endif /* !defined (UNPROTOIZE) */
|
||
exit (FATAL_EXIT_CODE);
|
||
}
|
||
|
||
/* Return true if the given filename (assumed to be an absolute filename)
|
||
designates a file residing anywhere beneath any one of the "system"
|
||
include directories. */
|
||
|
||
static int
|
||
in_system_include_dir (const char *path)
|
||
{
|
||
const struct default_include *p;
|
||
|
||
gcc_assert (IS_ABSOLUTE_PATH (path));
|
||
|
||
for (p = cpp_include_defaults; p->fname; p++)
|
||
if (!strncmp (path, p->fname, strlen (p->fname))
|
||
&& IS_DIR_SEPARATOR (path[strlen (p->fname)]))
|
||
return 1;
|
||
return 0;
|
||
}
|
||
|
||
#if 0
|
||
/* Return true if the given filename designates a file that the user has
|
||
read access to and for which the user has write access to the containing
|
||
directory. */
|
||
|
||
static int
|
||
file_could_be_converted (const char *path)
|
||
{
|
||
char *const dir_name = alloca (strlen (path) + 1);
|
||
|
||
if (access (path, R_OK))
|
||
return 0;
|
||
|
||
{
|
||
char *dir_last_slash;
|
||
|
||
strcpy (dir_name, path);
|
||
dir_last_slash = strrchr (dir_name, DIR_SEPARATOR);
|
||
#ifdef DIR_SEPARATOR_2
|
||
{
|
||
char *slash;
|
||
|
||
slash = strrchr (dir_last_slash ? dir_last_slash : dir_name,
|
||
DIR_SEPARATOR_2);
|
||
if (slash)
|
||
dir_last_slash = slash;
|
||
}
|
||
#endif
|
||
gcc_assert (dir_last_slash);
|
||
*dir_last_slash = '\0';
|
||
}
|
||
|
||
if (access (path, W_OK))
|
||
return 0;
|
||
|
||
return 1;
|
||
}
|
||
|
||
/* Return true if the given filename designates a file that we are allowed
|
||
to modify. Files which we should not attempt to modify are (a) "system"
|
||
include files, and (b) files which the user doesn't have write access to,
|
||
and (c) files which reside in directories which the user doesn't have
|
||
write access to. Unless requested to be quiet, give warnings about
|
||
files that we will not try to convert for one reason or another. An
|
||
exception is made for "system" include files, which we never try to
|
||
convert and for which we don't issue the usual warnings. */
|
||
|
||
static int
|
||
file_normally_convertible (const char *path)
|
||
{
|
||
char *const dir_name = alloca (strlen (path) + 1);
|
||
|
||
if (in_system_include_dir (path))
|
||
return 0;
|
||
|
||
{
|
||
char *dir_last_slash;
|
||
|
||
strcpy (dir_name, path);
|
||
dir_last_slash = strrchr (dir_name, DIR_SEPARATOR);
|
||
#ifdef DIR_SEPARATOR_2
|
||
{
|
||
char *slash;
|
||
|
||
slash = strrchr (dir_last_slash ? dir_last_slash : dir_name,
|
||
DIR_SEPARATOR_2);
|
||
if (slash)
|
||
dir_last_slash = slash;
|
||
}
|
||
#endif
|
||
gcc_assert (dir_last_slash);
|
||
*dir_last_slash = '\0';
|
||
}
|
||
|
||
if (access (path, R_OK))
|
||
{
|
||
if (!quiet_flag)
|
||
notice ("%s: warning: no read access for file '%s'\n",
|
||
pname, shortpath (NULL, path));
|
||
return 0;
|
||
}
|
||
|
||
if (access (path, W_OK))
|
||
{
|
||
if (!quiet_flag)
|
||
notice ("%s: warning: no write access for file '%s'\n",
|
||
pname, shortpath (NULL, path));
|
||
return 0;
|
||
}
|
||
|
||
if (access (dir_name, W_OK))
|
||
{
|
||
if (!quiet_flag)
|
||
notice ("%s: warning: no write access for dir containing '%s'\n",
|
||
pname, shortpath (NULL, path));
|
||
return 0;
|
||
}
|
||
|
||
return 1;
|
||
}
|
||
#endif /* 0 */
|
||
|
||
#ifndef UNPROTOIZE
|
||
|
||
/* Return true if the given file_info struct refers to the special SYSCALLS.c.X
|
||
file. Return false otherwise. */
|
||
|
||
static int
|
||
is_syscalls_file (const file_info *fi_p)
|
||
{
|
||
char const *f = fi_p->hash_entry->symbol;
|
||
size_t fl = strlen (f), sysl = sizeof (syscalls_filename) - 1;
|
||
return sysl <= fl && strcmp (f + fl - sysl, syscalls_filename) == 0;
|
||
}
|
||
|
||
#endif /* !defined (UNPROTOIZE) */
|
||
|
||
/* Check to see if this file will need to have anything done to it on this
|
||
run. If there is nothing in the given file which both needs conversion
|
||
and for which we have the necessary stuff to do the conversion, return
|
||
false. Otherwise, return true.
|
||
|
||
Note that (for protoize) it is only valid to call this function *after*
|
||
the connections between declarations and definitions have all been made
|
||
by connect_defs_and_decs. */
|
||
|
||
static int
|
||
needs_to_be_converted (const file_info *file_p)
|
||
{
|
||
const def_dec_info *ddp;
|
||
|
||
#ifndef UNPROTOIZE
|
||
|
||
if (is_syscalls_file (file_p))
|
||
return 0;
|
||
|
||
#endif /* !defined (UNPROTOIZE) */
|
||
|
||
for (ddp = file_p->defs_decs; ddp; ddp = ddp->next_in_file)
|
||
|
||
if (
|
||
|
||
#ifndef UNPROTOIZE
|
||
|
||
/* ... and if we a protoizing and this function is in old style ... */
|
||
!ddp->prototyped
|
||
/* ... and if this a definition or is a decl with an associated def ... */
|
||
&& (ddp->is_func_def || (!ddp->is_func_def && ddp->definition))
|
||
|
||
#else /* defined (UNPROTOIZE) */
|
||
|
||
/* ... and if we are unprotoizing and this function is in new style ... */
|
||
ddp->prototyped
|
||
|
||
#endif /* defined (UNPROTOIZE) */
|
||
)
|
||
/* ... then the containing file needs converting. */
|
||
return -1;
|
||
return 0;
|
||
}
|
||
|
||
/* Return 1 if the file name NAME is in a directory
|
||
that should be converted. */
|
||
|
||
static int
|
||
directory_specified_p (const char *name)
|
||
{
|
||
struct string_list *p;
|
||
|
||
for (p = directory_list; p; p = p->next)
|
||
if (!strncmp (name, p->name, strlen (p->name))
|
||
&& IS_DIR_SEPARATOR (name[strlen (p->name)]))
|
||
{
|
||
const char *q = name + strlen (p->name) + 1;
|
||
|
||
/* If there are more slashes, it's in a subdir, so
|
||
this match doesn't count. */
|
||
while (*q++)
|
||
if (IS_DIR_SEPARATOR (*(q-1)))
|
||
goto lose;
|
||
return 1;
|
||
|
||
lose: ;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* Return 1 if the file named NAME should be excluded from conversion. */
|
||
|
||
static int
|
||
file_excluded_p (const char *name)
|
||
{
|
||
struct string_list *p;
|
||
int len = strlen (name);
|
||
|
||
for (p = exclude_list; p; p = p->next)
|
||
if (!strcmp (name + len - strlen (p->name), p->name)
|
||
&& IS_DIR_SEPARATOR (name[len - strlen (p->name) - 1]))
|
||
return 1;
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* Construct a new element of a string_list.
|
||
STRING is the new element value, and REST holds the remaining elements. */
|
||
|
||
static struct string_list *
|
||
string_list_cons (const char *string, struct string_list *rest)
|
||
{
|
||
struct string_list *temp = xmalloc (sizeof (struct string_list));
|
||
|
||
temp->next = rest;
|
||
temp->name = string;
|
||
return temp;
|
||
}
|
||
|
||
/* ??? The GNU convention for mentioning function args in its comments
|
||
is to capitalize them. So change "hash_tab_p" to HASH_TAB_P below.
|
||
Likewise for all the other functions. */
|
||
|
||
/* Given a hash table, apply some function to each node in the table. The
|
||
table to traverse is given as the "hash_tab_p" argument, and the
|
||
function to be applied to each node in the table is given as "func"
|
||
argument. */
|
||
|
||
static void
|
||
visit_each_hash_node (const hash_table_entry *hash_tab_p,
|
||
void (*func) (const hash_table_entry *))
|
||
{
|
||
const hash_table_entry *primary;
|
||
|
||
for (primary = hash_tab_p; primary < &hash_tab_p[HASH_TABLE_SIZE]; primary++)
|
||
if (primary->symbol)
|
||
{
|
||
hash_table_entry *second;
|
||
|
||
(*func)(primary);
|
||
for (second = primary->hash_next; second; second = second->hash_next)
|
||
(*func) (second);
|
||
}
|
||
}
|
||
|
||
/* Initialize all of the fields of a new hash table entry, pointed
|
||
to by the "p" parameter. Note that the space to hold the entry
|
||
is assumed to have already been allocated before this routine is
|
||
called. */
|
||
|
||
static hash_table_entry *
|
||
add_symbol (hash_table_entry *p, const char *s)
|
||
{
|
||
p->hash_next = NULL;
|
||
p->symbol = xstrdup (s);
|
||
p->ddip = NULL;
|
||
p->fip = NULL;
|
||
return p;
|
||
}
|
||
|
||
/* Look for a particular function name or filename in the particular
|
||
hash table indicated by "hash_tab_p". If the name is not in the
|
||
given hash table, add it. Either way, return a pointer to the
|
||
hash table entry for the given name. */
|
||
|
||
static hash_table_entry *
|
||
lookup (hash_table_entry *hash_tab_p, const char *search_symbol)
|
||
{
|
||
int hash_value = 0;
|
||
const char *search_symbol_char_p = search_symbol;
|
||
hash_table_entry *p;
|
||
|
||
while (*search_symbol_char_p)
|
||
hash_value += *search_symbol_char_p++;
|
||
hash_value &= hash_mask;
|
||
p = &hash_tab_p[hash_value];
|
||
if (! p->symbol)
|
||
return add_symbol (p, search_symbol);
|
||
if (!strcmp (p->symbol, search_symbol))
|
||
return p;
|
||
while (p->hash_next)
|
||
{
|
||
p = p->hash_next;
|
||
if (!strcmp (p->symbol, search_symbol))
|
||
return p;
|
||
}
|
||
p->hash_next = xmalloc (sizeof (hash_table_entry));
|
||
p = p->hash_next;
|
||
return add_symbol (p, search_symbol);
|
||
}
|
||
|
||
/* Throw a def/dec record on the junk heap.
|
||
|
||
Also, since we are not using this record anymore, free up all of the
|
||
stuff it pointed to. */
|
||
|
||
static void
|
||
free_def_dec (def_dec_info *p)
|
||
{
|
||
free ((NONCONST void *) p->ansi_decl);
|
||
|
||
#ifndef UNPROTOIZE
|
||
{
|
||
const f_list_chain_item * curr;
|
||
const f_list_chain_item * next;
|
||
|
||
for (curr = p->f_list_chain; curr; curr = next)
|
||
{
|
||
next = curr->chain_next;
|
||
free ((NONCONST void *) curr);
|
||
}
|
||
}
|
||
#endif /* !defined (UNPROTOIZE) */
|
||
|
||
free (p);
|
||
}
|
||
|
||
/* Unexpand as many macro symbols as we can find.
|
||
|
||
If the given line must be unexpanded, make a copy of it in the heap and
|
||
return a pointer to the unexpanded copy. Otherwise return NULL. */
|
||
|
||
static char *
|
||
unexpand_if_needed (const char *aux_info_line)
|
||
{
|
||
static char *line_buf = 0;
|
||
static int line_buf_size = 0;
|
||
const unexpansion *unexp_p;
|
||
int got_unexpanded = 0;
|
||
const char *s;
|
||
char *copy_p = line_buf;
|
||
|
||
if (line_buf == 0)
|
||
{
|
||
line_buf_size = 1024;
|
||
line_buf = xmalloc (line_buf_size);
|
||
}
|
||
|
||
copy_p = line_buf;
|
||
|
||
/* Make a copy of the input string in line_buf, expanding as necessary. */
|
||
|
||
for (s = aux_info_line; *s != '\n'; )
|
||
{
|
||
for (unexp_p = unexpansions; unexp_p->expanded; unexp_p++)
|
||
{
|
||
const char *in_p = unexp_p->expanded;
|
||
size_t len = strlen (in_p);
|
||
|
||
if (*s == *in_p && !strncmp (s, in_p, len) && !is_id_char (s[len]))
|
||
{
|
||
int size = strlen (unexp_p->contracted);
|
||
got_unexpanded = 1;
|
||
if (copy_p + size - line_buf >= line_buf_size)
|
||
{
|
||
int offset = copy_p - line_buf;
|
||
line_buf_size *= 2;
|
||
line_buf_size += size;
|
||
line_buf = xrealloc (line_buf, line_buf_size);
|
||
copy_p = line_buf + offset;
|
||
}
|
||
strcpy (copy_p, unexp_p->contracted);
|
||
copy_p += size;
|
||
|
||
/* Assume that there will not be another replacement required
|
||
within the text just replaced. */
|
||
|
||
s += len;
|
||
goto continue_outer;
|
||
}
|
||
}
|
||
if (copy_p - line_buf == line_buf_size)
|
||
{
|
||
int offset = copy_p - line_buf;
|
||
line_buf_size *= 2;
|
||
line_buf = xrealloc (line_buf, line_buf_size);
|
||
copy_p = line_buf + offset;
|
||
}
|
||
*copy_p++ = *s++;
|
||
continue_outer: ;
|
||
}
|
||
if (copy_p + 2 - line_buf >= line_buf_size)
|
||
{
|
||
int offset = copy_p - line_buf;
|
||
line_buf_size *= 2;
|
||
line_buf = xrealloc (line_buf, line_buf_size);
|
||
copy_p = line_buf + offset;
|
||
}
|
||
*copy_p++ = '\n';
|
||
*copy_p = '\0';
|
||
|
||
return (got_unexpanded ? savestring (line_buf, copy_p - line_buf) : 0);
|
||
}
|
||
|
||
/* Return the absolutized filename for the given relative
|
||
filename. Note that if that filename is already absolute, it may
|
||
still be returned in a modified form because this routine also
|
||
eliminates redundant slashes and single dots and eliminates double
|
||
dots to get a shortest possible filename from the given input
|
||
filename. The absolutization of relative filenames is made by
|
||
assuming that the given filename is to be taken as relative to
|
||
the first argument (cwd) or to the current directory if cwd is
|
||
NULL. */
|
||
|
||
static char *
|
||
abspath (const char *cwd, const char *rel_filename)
|
||
{
|
||
/* Setup the current working directory as needed. */
|
||
const char *const cwd2 = (cwd) ? cwd : cwd_buffer;
|
||
char *const abs_buffer = alloca (strlen (cwd2) + strlen (rel_filename) + 2);
|
||
char *endp = abs_buffer;
|
||
char *outp, *inp;
|
||
|
||
/* Copy the filename (possibly preceded by the current working
|
||
directory name) into the absolutization buffer. */
|
||
|
||
{
|
||
const char *src_p;
|
||
|
||
if (! IS_ABSOLUTE_PATH (rel_filename))
|
||
{
|
||
src_p = cwd2;
|
||
while ((*endp++ = *src_p++))
|
||
continue;
|
||
*(endp-1) = DIR_SEPARATOR; /* overwrite null */
|
||
}
|
||
#ifdef HAVE_DOS_BASED_FILE_SYSTEM
|
||
else if (IS_DIR_SEPARATOR (rel_filename[0]))
|
||
{
|
||
/* A path starting with a directory separator is considered absolute
|
||
for dos based filesystems, but it's really not -- it's just the
|
||
convention used throughout GCC and it works. However, in this
|
||
case, we still need to prepend the drive spec from cwd_buffer. */
|
||
*endp++ = cwd2[0];
|
||
*endp++ = cwd2[1];
|
||
}
|
||
#endif
|
||
src_p = rel_filename;
|
||
while ((*endp++ = *src_p++))
|
||
continue;
|
||
}
|
||
|
||
/* Now make a copy of abs_buffer into abs_buffer, shortening the
|
||
filename (by taking out slashes and dots) as we go. */
|
||
|
||
outp = inp = abs_buffer;
|
||
*outp++ = *inp++; /* copy first slash */
|
||
#if defined (apollo) || defined (_WIN32) || defined (__INTERIX)
|
||
if (IS_DIR_SEPARATOR (inp[0]))
|
||
*outp++ = *inp++; /* copy second slash */
|
||
#endif
|
||
for (;;)
|
||
{
|
||
if (!inp[0])
|
||
break;
|
||
else if (IS_DIR_SEPARATOR (inp[0]) && IS_DIR_SEPARATOR (outp[-1]))
|
||
{
|
||
inp++;
|
||
continue;
|
||
}
|
||
else if (inp[0] == '.' && IS_DIR_SEPARATOR (outp[-1]))
|
||
{
|
||
if (!inp[1])
|
||
break;
|
||
else if (IS_DIR_SEPARATOR (inp[1]))
|
||
{
|
||
inp += 2;
|
||
continue;
|
||
}
|
||
else if ((inp[1] == '.') && (inp[2] == 0
|
||
|| IS_DIR_SEPARATOR (inp[2])))
|
||
{
|
||
inp += (IS_DIR_SEPARATOR (inp[2])) ? 3 : 2;
|
||
outp -= 2;
|
||
while (outp >= abs_buffer && ! IS_DIR_SEPARATOR (*outp))
|
||
outp--;
|
||
if (outp < abs_buffer)
|
||
{
|
||
/* Catch cases like /.. where we try to backup to a
|
||
point above the absolute root of the logical file
|
||
system. */
|
||
|
||
notice ("%s: invalid file name: %s\n",
|
||
pname, rel_filename);
|
||
exit (FATAL_EXIT_CODE);
|
||
}
|
||
*++outp = '\0';
|
||
continue;
|
||
}
|
||
}
|
||
*outp++ = *inp++;
|
||
}
|
||
|
||
/* On exit, make sure that there is a trailing null, and make sure that
|
||
the last character of the returned string is *not* a slash. */
|
||
|
||
*outp = '\0';
|
||
if (IS_DIR_SEPARATOR (outp[-1]))
|
||
*--outp = '\0';
|
||
|
||
/* Make a copy (in the heap) of the stuff left in the absolutization
|
||
buffer and return a pointer to the copy. */
|
||
|
||
return savestring (abs_buffer, outp - abs_buffer);
|
||
}
|
||
|
||
/* Given a filename (and possibly a directory name from which the filename
|
||
is relative) return a string which is the shortest possible
|
||
equivalent for the corresponding full (absolutized) filename. The
|
||
shortest possible equivalent may be constructed by converting the
|
||
absolutized filename to be a relative filename (i.e. relative to
|
||
the actual current working directory). However if a relative filename
|
||
is longer, then the full absolute filename is returned.
|
||
|
||
KNOWN BUG:
|
||
|
||
Note that "simple-minded" conversion of any given type of filename (either
|
||
relative or absolute) may not result in a valid equivalent filename if any
|
||
subpart of the original filename is actually a symbolic link. */
|
||
|
||
static const char *
|
||
shortpath (const char *cwd, const char *filename)
|
||
{
|
||
char *rel_buffer;
|
||
char *rel_buf_p;
|
||
char *cwd_p = cwd_buffer;
|
||
char *path_p;
|
||
int unmatched_slash_count = 0;
|
||
size_t filename_len = strlen (filename);
|
||
|
||
path_p = abspath (cwd, filename);
|
||
rel_buf_p = rel_buffer = xmalloc (filename_len);
|
||
|
||
while (*cwd_p && IS_SAME_PATH_CHAR (*cwd_p, *path_p))
|
||
{
|
||
cwd_p++;
|
||
path_p++;
|
||
}
|
||
if (!*cwd_p && (!*path_p || IS_DIR_SEPARATOR (*path_p)))
|
||
{
|
||
/* whole pwd matched */
|
||
if (!*path_p) /* input *is* the current path! */
|
||
return ".";
|
||
else
|
||
return ++path_p;
|
||
}
|
||
else
|
||
{
|
||
if (*path_p)
|
||
{
|
||
--cwd_p;
|
||
--path_p;
|
||
while (! IS_DIR_SEPARATOR (*cwd_p)) /* backup to last slash */
|
||
{
|
||
--cwd_p;
|
||
--path_p;
|
||
}
|
||
cwd_p++;
|
||
path_p++;
|
||
unmatched_slash_count++;
|
||
}
|
||
|
||
/* Find out how many directory levels in cwd were *not* matched. */
|
||
while (*cwd_p++)
|
||
if (IS_DIR_SEPARATOR (*(cwd_p-1)))
|
||
unmatched_slash_count++;
|
||
|
||
/* Now we know how long the "short name" will be.
|
||
Reject it if longer than the input. */
|
||
if (unmatched_slash_count * 3 + strlen (path_p) >= filename_len)
|
||
return filename;
|
||
|
||
/* For each of them, put a `../' at the beginning of the short name. */
|
||
while (unmatched_slash_count--)
|
||
{
|
||
/* Give up if the result gets to be longer
|
||
than the absolute path name. */
|
||
if (rel_buffer + filename_len <= rel_buf_p + 3)
|
||
return filename;
|
||
*rel_buf_p++ = '.';
|
||
*rel_buf_p++ = '.';
|
||
*rel_buf_p++ = DIR_SEPARATOR;
|
||
}
|
||
|
||
/* Then tack on the unmatched part of the desired file's name. */
|
||
do
|
||
{
|
||
if (rel_buffer + filename_len <= rel_buf_p)
|
||
return filename;
|
||
}
|
||
while ((*rel_buf_p++ = *path_p++));
|
||
|
||
--rel_buf_p;
|
||
if (IS_DIR_SEPARATOR (*(rel_buf_p-1)))
|
||
*--rel_buf_p = '\0';
|
||
return rel_buffer;
|
||
}
|
||
}
|
||
|
||
/* Lookup the given filename in the hash table for filenames. If it is a
|
||
new one, then the hash table info pointer will be null. In this case,
|
||
we create a new file_info record to go with the filename, and we initialize
|
||
that record with some reasonable values. */
|
||
|
||
/* FILENAME was const, but that causes a warning on AIX when calling stat.
|
||
That is probably a bug in AIX, but might as well avoid the warning. */
|
||
|
||
static file_info *
|
||
find_file (const char *filename, int do_not_stat)
|
||
{
|
||
hash_table_entry *hash_entry_p;
|
||
|
||
hash_entry_p = lookup (filename_primary, filename);
|
||
if (hash_entry_p->fip)
|
||
return hash_entry_p->fip;
|
||
else
|
||
{
|
||
struct stat stat_buf;
|
||
file_info *file_p = xmalloc (sizeof (file_info));
|
||
|
||
/* If we cannot get status on any given source file, give a warning
|
||
and then just set its time of last modification to infinity. */
|
||
|
||
if (do_not_stat)
|
||
stat_buf.st_mtime = (time_t) 0;
|
||
else
|
||
{
|
||
if (stat (filename, &stat_buf) == -1)
|
||
{
|
||
int errno_val = errno;
|
||
notice ("%s: %s: can't get status: %s\n",
|
||
pname, shortpath (NULL, filename),
|
||
xstrerror (errno_val));
|
||
stat_buf.st_mtime = (time_t) -1;
|
||
}
|
||
}
|
||
|
||
hash_entry_p->fip = file_p;
|
||
file_p->hash_entry = hash_entry_p;
|
||
file_p->defs_decs = NULL;
|
||
file_p->mtime = stat_buf.st_mtime;
|
||
return file_p;
|
||
}
|
||
}
|
||
|
||
/* Generate a fatal error because some part of the aux_info file is
|
||
messed up. */
|
||
|
||
static void
|
||
aux_info_corrupted (void)
|
||
{
|
||
notice ("\n%s: fatal error: aux info file corrupted at line %d\n",
|
||
pname, current_aux_info_lineno);
|
||
exit (FATAL_EXIT_CODE);
|
||
}
|
||
|
||
/* ??? This comment is vague. Say what the condition is for. */
|
||
/* Check to see that a condition is true. This is kind of like an assert. */
|
||
|
||
static void
|
||
check_aux_info (int cond)
|
||
{
|
||
if (! cond)
|
||
aux_info_corrupted ();
|
||
}
|
||
|
||
/* Given a pointer to the closing right parenthesis for a particular formals
|
||
list (in an aux_info file) find the corresponding left parenthesis and
|
||
return a pointer to it. */
|
||
|
||
static const char *
|
||
find_corresponding_lparen (const char *p)
|
||
{
|
||
const char *q;
|
||
int paren_depth;
|
||
|
||
for (paren_depth = 1, q = p-1; paren_depth; q--)
|
||
{
|
||
switch (*q)
|
||
{
|
||
case ')':
|
||
paren_depth++;
|
||
break;
|
||
case '(':
|
||
paren_depth--;
|
||
break;
|
||
}
|
||
}
|
||
return ++q;
|
||
}
|
||
|
||
/* Given a line from an aux info file, and a time at which the aux info
|
||
file it came from was created, check to see if the item described in
|
||
the line comes from a file which has been modified since the aux info
|
||
file was created. If so, return nonzero, else return zero. */
|
||
|
||
static int
|
||
referenced_file_is_newer (const char *l, time_t aux_info_mtime)
|
||
{
|
||
const char *p;
|
||
file_info *fi_p;
|
||
char *filename;
|
||
|
||
check_aux_info (l[0] == '/');
|
||
check_aux_info (l[1] == '*');
|
||
check_aux_info (l[2] == ' ');
|
||
|
||
{
|
||
const char *filename_start = p = l + 3;
|
||
|
||
while (*p != ':'
|
||
#ifdef HAVE_DOS_BASED_FILE_SYSTEM
|
||
|| (*p == ':' && *p && *(p+1) && IS_DIR_SEPARATOR (*(p+1)))
|
||
#endif
|
||
)
|
||
p++;
|
||
filename = alloca ((size_t) (p - filename_start) + 1);
|
||
strncpy (filename, filename_start, (size_t) (p - filename_start));
|
||
filename[p-filename_start] = '\0';
|
||
}
|
||
|
||
/* Call find_file to find the file_info record associated with the file
|
||
which contained this particular def or dec item. Note that this call
|
||
may cause a new file_info record to be created if this is the first time
|
||
that we have ever known about this particular file. */
|
||
|
||
fi_p = find_file (abspath (invocation_filename, filename), 0);
|
||
|
||
return (fi_p->mtime > aux_info_mtime);
|
||
}
|
||
|
||
/* Given a line of info from the aux_info file, create a new
|
||
def_dec_info record to remember all of the important information about
|
||
a function definition or declaration.
|
||
|
||
Link this record onto the list of such records for the particular file in
|
||
which it occurred in proper (descending) line number order (for now).
|
||
|
||
If there is an identical record already on the list for the file, throw
|
||
this one away. Doing so takes care of the (useless and troublesome)
|
||
duplicates which are bound to crop up due to multiple inclusions of any
|
||
given individual header file.
|
||
|
||
Finally, link the new def_dec record onto the list of such records
|
||
pertaining to this particular function name. */
|
||
|
||
static void
|
||
save_def_or_dec (const char *l, int is_syscalls)
|
||
{
|
||
const char *p;
|
||
const char *semicolon_p;
|
||
def_dec_info *def_dec_p = xmalloc (sizeof (def_dec_info));
|
||
|
||
#ifndef UNPROTOIZE
|
||
def_dec_p->written = 0;
|
||
#endif /* !defined (UNPROTOIZE) */
|
||
|
||
/* Start processing the line by picking off 5 pieces of information from
|
||
the left hand end of the line. These are filename, line number,
|
||
new/old/implicit flag (new = ANSI prototype format), definition or
|
||
declaration flag, and extern/static flag). */
|
||
|
||
check_aux_info (l[0] == '/');
|
||
check_aux_info (l[1] == '*');
|
||
check_aux_info (l[2] == ' ');
|
||
|
||
{
|
||
const char *filename_start = p = l + 3;
|
||
char *filename;
|
||
|
||
while (*p != ':'
|
||
#ifdef HAVE_DOS_BASED_FILE_SYSTEM
|
||
|| (*p == ':' && *p && *(p+1) && IS_DIR_SEPARATOR (*(p+1)))
|
||
#endif
|
||
)
|
||
p++;
|
||
filename = alloca ((size_t) (p - filename_start) + 1);
|
||
strncpy (filename, filename_start, (size_t) (p - filename_start));
|
||
filename[p-filename_start] = '\0';
|
||
|
||
/* Call find_file to find the file_info record associated with the file
|
||
which contained this particular def or dec item. Note that this call
|
||
may cause a new file_info record to be created if this is the first time
|
||
that we have ever known about this particular file.
|
||
|
||
Note that we started out by forcing all of the base source file names
|
||
(i.e. the names of the aux_info files with the .X stripped off) into the
|
||
filenames hash table, and we simultaneously setup file_info records for
|
||
all of these base file names (even if they may be useless later).
|
||
The file_info records for all of these "base" file names (properly)
|
||
act as file_info records for the "original" (i.e. un-included) files
|
||
which were submitted to gcc for compilation (when the -aux-info
|
||
option was used). */
|
||
|
||
def_dec_p->file = find_file (abspath (invocation_filename, filename), is_syscalls);
|
||
}
|
||
|
||
{
|
||
const char *line_number_start = ++p;
|
||
char line_number[10];
|
||
|
||
while (*p != ':'
|
||
#ifdef HAVE_DOS_BASED_FILE_SYSTEM
|
||
|| (*p == ':' && *p && *(p+1) && IS_DIR_SEPARATOR (*(p+1)))
|
||
#endif
|
||
)
|
||
p++;
|
||
strncpy (line_number, line_number_start, (size_t) (p - line_number_start));
|
||
line_number[p-line_number_start] = '\0';
|
||
def_dec_p->line = atoi (line_number);
|
||
}
|
||
|
||
/* Check that this record describes a new-style, old-style, or implicit
|
||
definition or declaration. */
|
||
|
||
p++; /* Skip over the `:'. */
|
||
check_aux_info ((*p == 'N') || (*p == 'O') || (*p == 'I'));
|
||
|
||
/* Is this a new style (ANSI prototyped) definition or declaration? */
|
||
|
||
def_dec_p->prototyped = (*p == 'N');
|
||
|
||
#ifndef UNPROTOIZE
|
||
|
||
/* Is this an implicit declaration? */
|
||
|
||
def_dec_p->is_implicit = (*p == 'I');
|
||
|
||
#endif /* !defined (UNPROTOIZE) */
|
||
|
||
p++;
|
||
|
||
check_aux_info ((*p == 'C') || (*p == 'F'));
|
||
|
||
/* Is this item a function definition (F) or a declaration (C). Note that
|
||
we treat item taken from the syscalls file as though they were function
|
||
definitions regardless of what the stuff in the file says. */
|
||
|
||
def_dec_p->is_func_def = ((*p++ == 'F') || is_syscalls);
|
||
|
||
#ifndef UNPROTOIZE
|
||
def_dec_p->definition = 0; /* Fill this in later if protoizing. */
|
||
#endif /* !defined (UNPROTOIZE) */
|
||
|
||
check_aux_info (*p++ == ' ');
|
||
check_aux_info (*p++ == '*');
|
||
check_aux_info (*p++ == '/');
|
||
check_aux_info (*p++ == ' ');
|
||
|
||
#ifdef UNPROTOIZE
|
||
check_aux_info ((!strncmp (p, "static", 6)) || (!strncmp (p, "extern", 6)));
|
||
#else /* !defined (UNPROTOIZE) */
|
||
if (!strncmp (p, "static", 6))
|
||
def_dec_p->is_static = -1;
|
||
else if (!strncmp (p, "extern", 6))
|
||
def_dec_p->is_static = 0;
|
||
else
|
||
check_aux_info (0); /* Didn't find either `extern' or `static'. */
|
||
#endif /* !defined (UNPROTOIZE) */
|
||
|
||
{
|
||
const char *ansi_start = p;
|
||
|
||
p += 6; /* Pass over the "static" or "extern". */
|
||
|
||
/* We are now past the initial stuff. Search forward from here to find
|
||
the terminating semicolon that should immediately follow the entire
|
||
ANSI format function declaration. */
|
||
|
||
while (*++p != ';')
|
||
continue;
|
||
|
||
semicolon_p = p;
|
||
|
||
/* Make a copy of the ansi declaration part of the line from the aux_info
|
||
file. */
|
||
|
||
def_dec_p->ansi_decl
|
||
= dupnstr (ansi_start, (size_t) ((semicolon_p+1) - ansi_start));
|
||
|
||
/* Backup and point at the final right paren of the final argument list. */
|
||
|
||
p--;
|
||
|
||
#ifndef UNPROTOIZE
|
||
def_dec_p->f_list_chain = NULL;
|
||
#endif /* !defined (UNPROTOIZE) */
|
||
|
||
while (p != ansi_start && (p[-1] == ' ' || p[-1] == '\t')) p--;
|
||
if (*p != ')')
|
||
{
|
||
free_def_dec (def_dec_p);
|
||
return;
|
||
}
|
||
}
|
||
|
||
/* Now isolate a whole set of formal argument lists, one-by-one. Normally,
|
||
there will only be one list to isolate, but there could be more. */
|
||
|
||
def_dec_p->f_list_count = 0;
|
||
|
||
for (;;)
|
||
{
|
||
const char *left_paren_p = find_corresponding_lparen (p);
|
||
#ifndef UNPROTOIZE
|
||
{
|
||
f_list_chain_item *cip = xmalloc (sizeof (f_list_chain_item));
|
||
|
||
cip->formals_list
|
||
= dupnstr (left_paren_p + 1, (size_t) (p - (left_paren_p+1)));
|
||
|
||
/* Add the new chain item at the head of the current list. */
|
||
|
||
cip->chain_next = def_dec_p->f_list_chain;
|
||
def_dec_p->f_list_chain = cip;
|
||
}
|
||
#endif /* !defined (UNPROTOIZE) */
|
||
def_dec_p->f_list_count++;
|
||
|
||
p = left_paren_p - 2;
|
||
|
||
/* p must now point either to another right paren, or to the last
|
||
character of the name of the function that was declared/defined.
|
||
If p points to another right paren, then this indicates that we
|
||
are dealing with multiple formals lists. In that case, there
|
||
really should be another right paren preceding this right paren. */
|
||
|
||
if (*p != ')')
|
||
break;
|
||
else
|
||
check_aux_info (*--p == ')');
|
||
}
|
||
|
||
|
||
{
|
||
const char *past_fn = p + 1;
|
||
|
||
check_aux_info (*past_fn == ' ');
|
||
|
||
/* Scan leftwards over the identifier that names the function. */
|
||
|
||
while (is_id_char (*p))
|
||
p--;
|
||
p++;
|
||
|
||
/* p now points to the leftmost character of the function name. */
|
||
|
||
{
|
||
char *fn_string = alloca (past_fn - p + 1);
|
||
|
||
strncpy (fn_string, p, (size_t) (past_fn - p));
|
||
fn_string[past_fn-p] = '\0';
|
||
def_dec_p->hash_entry = lookup (function_name_primary, fn_string);
|
||
}
|
||
}
|
||
|
||
/* Look at all of the defs and decs for this function name that we have
|
||
collected so far. If there is already one which is at the same
|
||
line number in the same file, then we can discard this new def_dec_info
|
||
record.
|
||
|
||
As an extra assurance that any such pair of (nominally) identical
|
||
function declarations are in fact identical, we also compare the
|
||
ansi_decl parts of the lines from the aux_info files just to be on
|
||
the safe side.
|
||
|
||
This comparison will fail if (for instance) the user was playing
|
||
messy games with the preprocessor which ultimately causes one
|
||
function declaration in one header file to look differently when
|
||
that file is included by two (or more) other files. */
|
||
|
||
{
|
||
const def_dec_info *other;
|
||
|
||
for (other = def_dec_p->hash_entry->ddip; other; other = other->next_for_func)
|
||
{
|
||
if (def_dec_p->line == other->line && def_dec_p->file == other->file)
|
||
{
|
||
if (strcmp (def_dec_p->ansi_decl, other->ansi_decl))
|
||
{
|
||
notice ("%s:%d: declaration of function '%s' takes different forms\n",
|
||
def_dec_p->file->hash_entry->symbol,
|
||
def_dec_p->line,
|
||
def_dec_p->hash_entry->symbol);
|
||
exit (FATAL_EXIT_CODE);
|
||
}
|
||
free_def_dec (def_dec_p);
|
||
return;
|
||
}
|
||
}
|
||
}
|
||
|
||
#ifdef UNPROTOIZE
|
||
|
||
/* If we are doing unprotoizing, we must now setup the pointers that will
|
||
point to the K&R name list and to the K&R argument declarations list.
|
||
|
||
Note that if this is only a function declaration, then we should not
|
||
expect to find any K&R style formals list following the ANSI-style
|
||
formals list. This is because GCC knows that such information is
|
||
useless in the case of function declarations (function definitions
|
||
are a different story however).
|
||
|
||
Since we are unprotoizing, we don't need any such lists anyway.
|
||
All we plan to do is to delete all characters between ()'s in any
|
||
case. */
|
||
|
||
def_dec_p->formal_names = NULL;
|
||
def_dec_p->formal_decls = NULL;
|
||
|
||
if (def_dec_p->is_func_def)
|
||
{
|
||
p = semicolon_p;
|
||
check_aux_info (*++p == ' ');
|
||
check_aux_info (*++p == '/');
|
||
check_aux_info (*++p == '*');
|
||
check_aux_info (*++p == ' ');
|
||
check_aux_info (*++p == '(');
|
||
|
||
{
|
||
const char *kr_names_start = ++p; /* Point just inside '('. */
|
||
|
||
while (*p++ != ')')
|
||
continue;
|
||
p--; /* point to closing right paren */
|
||
|
||
/* Make a copy of the K&R parameter names list. */
|
||
|
||
def_dec_p->formal_names
|
||
= dupnstr (kr_names_start, (size_t) (p - kr_names_start));
|
||
}
|
||
|
||
check_aux_info (*++p == ' ');
|
||
p++;
|
||
|
||
/* p now points to the first character of the K&R style declarations
|
||
list (if there is one) or to the star-slash combination that ends
|
||
the comment in which such lists get embedded. */
|
||
|
||
/* Make a copy of the K&R formal decls list and set the def_dec record
|
||
to point to it. */
|
||
|
||
if (*p == '*') /* Are there no K&R declarations? */
|
||
{
|
||
check_aux_info (*++p == '/');
|
||
def_dec_p->formal_decls = "";
|
||
}
|
||
else
|
||
{
|
||
const char *kr_decls_start = p;
|
||
|
||
while (p[0] != '*' || p[1] != '/')
|
||
p++;
|
||
p--;
|
||
|
||
check_aux_info (*p == ' ');
|
||
|
||
def_dec_p->formal_decls
|
||
= dupnstr (kr_decls_start, (size_t) (p - kr_decls_start));
|
||
}
|
||
|
||
/* Handle a special case. If we have a function definition marked as
|
||
being in "old" style, and if its formal names list is empty, then
|
||
it may actually have the string "void" in its real formals list
|
||
in the original source code. Just to make sure, we will get setup
|
||
to convert such things anyway.
|
||
|
||
This kludge only needs to be here because of an insurmountable
|
||
problem with generating .X files. */
|
||
|
||
if (!def_dec_p->prototyped && !*def_dec_p->formal_names)
|
||
def_dec_p->prototyped = 1;
|
||
}
|
||
|
||
/* Since we are unprotoizing, if this item is already in old (K&R) style,
|
||
we can just ignore it. If that is true, throw away the itme now. */
|
||
|
||
if (!def_dec_p->prototyped)
|
||
{
|
||
free_def_dec (def_dec_p);
|
||
return;
|
||
}
|
||
|
||
#endif /* defined (UNPROTOIZE) */
|
||
|
||
/* Add this record to the head of the list of records pertaining to this
|
||
particular function name. */
|
||
|
||
def_dec_p->next_for_func = def_dec_p->hash_entry->ddip;
|
||
def_dec_p->hash_entry->ddip = def_dec_p;
|
||
|
||
/* Add this new def_dec_info record to the sorted list of def_dec_info
|
||
records for this file. Note that we don't have to worry about duplicates
|
||
(caused by multiple inclusions of header files) here because we have
|
||
already eliminated duplicates above. */
|
||
|
||
if (!def_dec_p->file->defs_decs)
|
||
{
|
||
def_dec_p->file->defs_decs = def_dec_p;
|
||
def_dec_p->next_in_file = NULL;
|
||
}
|
||
else
|
||
{
|
||
int line = def_dec_p->line;
|
||
const def_dec_info *prev = NULL;
|
||
const def_dec_info *curr = def_dec_p->file->defs_decs;
|
||
const def_dec_info *next = curr->next_in_file;
|
||
|
||
while (next && (line < curr->line))
|
||
{
|
||
prev = curr;
|
||
curr = next;
|
||
next = next->next_in_file;
|
||
}
|
||
if (line >= curr->line)
|
||
{
|
||
def_dec_p->next_in_file = curr;
|
||
if (prev)
|
||
((NONCONST def_dec_info *) prev)->next_in_file = def_dec_p;
|
||
else
|
||
def_dec_p->file->defs_decs = def_dec_p;
|
||
}
|
||
else /* assert (next == NULL); */
|
||
{
|
||
((NONCONST def_dec_info *) curr)->next_in_file = def_dec_p;
|
||
/* assert (next == NULL); */
|
||
def_dec_p->next_in_file = next;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Set up the vector COMPILE_PARAMS which is the argument list for running GCC.
|
||
Also set input_file_name_index and aux_info_file_name_index
|
||
to the indices of the slots where the file names should go. */
|
||
|
||
/* We initialize the vector by removing -g, -O, -S, -c, and -o options,
|
||
and adding '-aux-info AUXFILE -S -o /dev/null INFILE' at the end. */
|
||
|
||
static void
|
||
munge_compile_params (const char *params_list)
|
||
{
|
||
/* Build up the contents in a temporary vector
|
||
that is so big that to has to be big enough. */
|
||
const char **temp_params
|
||
= alloca ((strlen (params_list) + 8) * sizeof (char *));
|
||
int param_count = 0;
|
||
const char *param;
|
||
struct stat st;
|
||
|
||
temp_params[param_count++] = compiler_file_name;
|
||
for (;;)
|
||
{
|
||
while (ISSPACE ((const unsigned char)*params_list))
|
||
params_list++;
|
||
if (!*params_list)
|
||
break;
|
||
param = params_list;
|
||
while (*params_list && !ISSPACE ((const unsigned char)*params_list))
|
||
params_list++;
|
||
if (param[0] != '-')
|
||
temp_params[param_count++]
|
||
= dupnstr (param, (size_t) (params_list - param));
|
||
else
|
||
{
|
||
switch (param[1])
|
||
{
|
||
case 'g':
|
||
case 'O':
|
||
case 'S':
|
||
case 'c':
|
||
break; /* Don't copy these. */
|
||
case 'o':
|
||
while (ISSPACE ((const unsigned char)*params_list))
|
||
params_list++;
|
||
while (*params_list
|
||
&& !ISSPACE ((const unsigned char)*params_list))
|
||
params_list++;
|
||
break;
|
||
default:
|
||
temp_params[param_count++]
|
||
= dupnstr (param, (size_t) (params_list - param));
|
||
}
|
||
}
|
||
if (!*params_list)
|
||
break;
|
||
}
|
||
temp_params[param_count++] = "-aux-info";
|
||
|
||
/* Leave room for the aux-info file name argument. */
|
||
aux_info_file_name_index = param_count;
|
||
temp_params[param_count++] = NULL;
|
||
|
||
temp_params[param_count++] = "-S";
|
||
temp_params[param_count++] = "-o";
|
||
|
||
if ((stat (HOST_BIT_BUCKET, &st) == 0)
|
||
&& (!S_ISDIR (st.st_mode))
|
||
&& (access (HOST_BIT_BUCKET, W_OK) == 0))
|
||
temp_params[param_count++] = HOST_BIT_BUCKET;
|
||
else
|
||
/* FIXME: This is hardly likely to be right, if HOST_BIT_BUCKET is not
|
||
writable. But until this is rejigged to use make_temp_file(), this
|
||
is the best we can do. */
|
||
temp_params[param_count++] = "/dev/null";
|
||
|
||
/* Leave room for the input file name argument. */
|
||
input_file_name_index = param_count;
|
||
temp_params[param_count++] = NULL;
|
||
/* Terminate the list. */
|
||
temp_params[param_count++] = NULL;
|
||
|
||
/* Make a copy of the compile_params in heap space. */
|
||
|
||
compile_params = xmalloc (sizeof (char *) * (param_count+1));
|
||
memcpy (compile_params, temp_params, sizeof (char *) * param_count);
|
||
}
|
||
|
||
/* Do a recompilation for the express purpose of generating a new aux_info
|
||
file to go with a specific base source file.
|
||
|
||
The result is a boolean indicating success. */
|
||
|
||
static int
|
||
gen_aux_info_file (const char *base_filename)
|
||
{
|
||
if (!input_file_name_index)
|
||
munge_compile_params ("");
|
||
|
||
/* Store the full source file name in the argument vector. */
|
||
compile_params[input_file_name_index] = shortpath (NULL, base_filename);
|
||
/* Add .X to source file name to get aux-info file name. */
|
||
compile_params[aux_info_file_name_index] =
|
||
concat (compile_params[input_file_name_index], aux_info_suffix, NULL);
|
||
|
||
if (!quiet_flag)
|
||
notice ("%s: compiling '%s'\n",
|
||
pname, compile_params[input_file_name_index]);
|
||
|
||
{
|
||
char *errmsg_fmt, *errmsg_arg;
|
||
int wait_status, pid;
|
||
|
||
pid = pexecute (compile_params[0], (char * const *) compile_params,
|
||
pname, NULL, &errmsg_fmt, &errmsg_arg,
|
||
PEXECUTE_FIRST | PEXECUTE_LAST | PEXECUTE_SEARCH);
|
||
|
||
if (pid == -1)
|
||
{
|
||
int errno_val = errno;
|
||
fprintf (stderr, "%s: ", pname);
|
||
fprintf (stderr, errmsg_fmt, errmsg_arg);
|
||
fprintf (stderr, ": %s\n", xstrerror (errno_val));
|
||
return 0;
|
||
}
|
||
|
||
pid = pwait (pid, &wait_status, 0);
|
||
if (pid == -1)
|
||
{
|
||
notice ("%s: wait: %s\n", pname, xstrerror (errno));
|
||
return 0;
|
||
}
|
||
if (WIFSIGNALED (wait_status))
|
||
{
|
||
notice ("%s: subprocess got fatal signal %d\n",
|
||
pname, WTERMSIG (wait_status));
|
||
return 0;
|
||
}
|
||
if (WIFEXITED (wait_status))
|
||
{
|
||
if (WEXITSTATUS (wait_status) != 0)
|
||
{
|
||
notice ("%s: %s exited with status %d\n",
|
||
pname, compile_params[0], WEXITSTATUS (wait_status));
|
||
return 0;
|
||
}
|
||
return 1;
|
||
}
|
||
gcc_unreachable ();
|
||
}
|
||
}
|
||
|
||
/* Read in all of the information contained in a single aux_info file.
|
||
Save all of the important stuff for later. */
|
||
|
||
static void
|
||
process_aux_info_file (const char *base_source_filename, int keep_it,
|
||
int is_syscalls)
|
||
{
|
||
size_t base_len = strlen (base_source_filename);
|
||
char * aux_info_filename = alloca (base_len + strlen (aux_info_suffix) + 1);
|
||
char *aux_info_base;
|
||
char *aux_info_limit;
|
||
char *aux_info_relocated_name;
|
||
const char *aux_info_second_line;
|
||
time_t aux_info_mtime;
|
||
size_t aux_info_size;
|
||
int must_create;
|
||
|
||
/* Construct the aux_info filename from the base source filename. */
|
||
|
||
strcpy (aux_info_filename, base_source_filename);
|
||
strcat (aux_info_filename, aux_info_suffix);
|
||
|
||
/* Check that the aux_info file exists and is readable. If it does not
|
||
exist, try to create it (once only). */
|
||
|
||
/* If file doesn't exist, set must_create.
|
||
Likewise if it exists and we can read it but it is obsolete.
|
||
Otherwise, report an error. */
|
||
must_create = 0;
|
||
|
||
/* Come here with must_create set to 1 if file is out of date. */
|
||
start_over: ;
|
||
|
||
if (access (aux_info_filename, R_OK) == -1)
|
||
{
|
||
if (errno == ENOENT)
|
||
{
|
||
if (is_syscalls)
|
||
{
|
||
notice ("%s: warning: missing SYSCALLS file '%s'\n",
|
||
pname, aux_info_filename);
|
||
return;
|
||
}
|
||
must_create = 1;
|
||
}
|
||
else
|
||
{
|
||
int errno_val = errno;
|
||
notice ("%s: can't read aux info file '%s': %s\n",
|
||
pname, shortpath (NULL, aux_info_filename),
|
||
xstrerror (errno_val));
|
||
errors++;
|
||
return;
|
||
}
|
||
}
|
||
#if 0 /* There is code farther down to take care of this. */
|
||
else
|
||
{
|
||
struct stat s1, s2;
|
||
stat (aux_info_file_name, &s1);
|
||
stat (base_source_file_name, &s2);
|
||
if (s2.st_mtime > s1.st_mtime)
|
||
must_create = 1;
|
||
}
|
||
#endif /* 0 */
|
||
|
||
/* If we need a .X file, create it, and verify we can read it. */
|
||
if (must_create)
|
||
{
|
||
if (!gen_aux_info_file (base_source_filename))
|
||
{
|
||
errors++;
|
||
return;
|
||
}
|
||
if (access (aux_info_filename, R_OK) == -1)
|
||
{
|
||
int errno_val = errno;
|
||
notice ("%s: can't read aux info file '%s': %s\n",
|
||
pname, shortpath (NULL, aux_info_filename),
|
||
xstrerror (errno_val));
|
||
errors++;
|
||
return;
|
||
}
|
||
}
|
||
|
||
{
|
||
struct stat stat_buf;
|
||
|
||
/* Get some status information about this aux_info file. */
|
||
|
||
if (stat (aux_info_filename, &stat_buf) == -1)
|
||
{
|
||
int errno_val = errno;
|
||
notice ("%s: can't get status of aux info file '%s': %s\n",
|
||
pname, shortpath (NULL, aux_info_filename),
|
||
xstrerror (errno_val));
|
||
errors++;
|
||
return;
|
||
}
|
||
|
||
/* Check on whether or not this aux_info file is zero length. If it is,
|
||
then just ignore it and return. */
|
||
|
||
if ((aux_info_size = stat_buf.st_size) == 0)
|
||
return;
|
||
|
||
/* Get the date/time of last modification for this aux_info file and
|
||
remember it. We will have to check that any source files that it
|
||
contains information about are at least this old or older. */
|
||
|
||
aux_info_mtime = stat_buf.st_mtime;
|
||
|
||
if (!is_syscalls)
|
||
{
|
||
/* Compare mod time with the .c file; update .X file if obsolete.
|
||
The code later on can fail to check the .c file
|
||
if it did not directly define any functions. */
|
||
|
||
if (stat (base_source_filename, &stat_buf) == -1)
|
||
{
|
||
int errno_val = errno;
|
||
notice ("%s: can't get status of aux info file '%s': %s\n",
|
||
pname, shortpath (NULL, base_source_filename),
|
||
xstrerror (errno_val));
|
||
errors++;
|
||
return;
|
||
}
|
||
if (stat_buf.st_mtime > aux_info_mtime)
|
||
{
|
||
must_create = 1;
|
||
goto start_over;
|
||
}
|
||
}
|
||
}
|
||
|
||
{
|
||
int aux_info_file;
|
||
int fd_flags;
|
||
|
||
/* Open the aux_info file. */
|
||
|
||
fd_flags = O_RDONLY;
|
||
#ifdef O_BINARY
|
||
/* Use binary mode to avoid having to deal with different EOL characters. */
|
||
fd_flags |= O_BINARY;
|
||
#endif
|
||
if ((aux_info_file = open (aux_info_filename, fd_flags, 0444 )) == -1)
|
||
{
|
||
int errno_val = errno;
|
||
notice ("%s: can't open aux info file '%s' for reading: %s\n",
|
||
pname, shortpath (NULL, aux_info_filename),
|
||
xstrerror (errno_val));
|
||
return;
|
||
}
|
||
|
||
/* Allocate space to hold the aux_info file in memory. */
|
||
|
||
aux_info_base = xmalloc (aux_info_size + 1);
|
||
aux_info_limit = aux_info_base + aux_info_size;
|
||
*aux_info_limit = '\0';
|
||
|
||
/* Read the aux_info file into memory. */
|
||
|
||
if (safe_read (aux_info_file, aux_info_base, aux_info_size) !=
|
||
(int) aux_info_size)
|
||
{
|
||
int errno_val = errno;
|
||
notice ("%s: error reading aux info file '%s': %s\n",
|
||
pname, shortpath (NULL, aux_info_filename),
|
||
xstrerror (errno_val));
|
||
free (aux_info_base);
|
||
close (aux_info_file);
|
||
return;
|
||
}
|
||
|
||
/* Close the aux info file. */
|
||
|
||
if (close (aux_info_file))
|
||
{
|
||
int errno_val = errno;
|
||
notice ("%s: error closing aux info file '%s': %s\n",
|
||
pname, shortpath (NULL, aux_info_filename),
|
||
xstrerror (errno_val));
|
||
free (aux_info_base);
|
||
close (aux_info_file);
|
||
return;
|
||
}
|
||
}
|
||
|
||
/* Delete the aux_info file (unless requested not to). If the deletion
|
||
fails for some reason, don't even worry about it. */
|
||
|
||
if (must_create && !keep_it)
|
||
if (unlink (aux_info_filename) == -1)
|
||
{
|
||
int errno_val = errno;
|
||
notice ("%s: can't delete aux info file '%s': %s\n",
|
||
pname, shortpath (NULL, aux_info_filename),
|
||
xstrerror (errno_val));
|
||
}
|
||
|
||
/* Save a pointer into the first line of the aux_info file which
|
||
contains the filename of the directory from which the compiler
|
||
was invoked when the associated source file was compiled.
|
||
This information is used later to help create complete
|
||
filenames out of the (potentially) relative filenames in
|
||
the aux_info file. */
|
||
|
||
{
|
||
char *p = aux_info_base;
|
||
|
||
while (*p != ':'
|
||
#ifdef HAVE_DOS_BASED_FILE_SYSTEM
|
||
|| (*p == ':' && *p && *(p+1) && IS_DIR_SEPARATOR (*(p+1)))
|
||
#endif
|
||
)
|
||
p++;
|
||
p++;
|
||
while (*p == ' ')
|
||
p++;
|
||
invocation_filename = p; /* Save a pointer to first byte of path. */
|
||
while (*p != ' ')
|
||
p++;
|
||
*p++ = DIR_SEPARATOR;
|
||
*p++ = '\0';
|
||
while (*p++ != '\n')
|
||
continue;
|
||
aux_info_second_line = p;
|
||
aux_info_relocated_name = 0;
|
||
if (! IS_ABSOLUTE_PATH (invocation_filename))
|
||
{
|
||
/* INVOCATION_FILENAME is relative;
|
||
append it to BASE_SOURCE_FILENAME's dir. */
|
||
char *dir_end;
|
||
aux_info_relocated_name = xmalloc (base_len + (p-invocation_filename));
|
||
strcpy (aux_info_relocated_name, base_source_filename);
|
||
dir_end = strrchr (aux_info_relocated_name, DIR_SEPARATOR);
|
||
#ifdef DIR_SEPARATOR_2
|
||
{
|
||
char *slash;
|
||
|
||
slash = strrchr (dir_end ? dir_end : aux_info_relocated_name,
|
||
DIR_SEPARATOR_2);
|
||
if (slash)
|
||
dir_end = slash;
|
||
}
|
||
#endif
|
||
if (dir_end)
|
||
dir_end++;
|
||
else
|
||
dir_end = aux_info_relocated_name;
|
||
strcpy (dir_end, invocation_filename);
|
||
invocation_filename = aux_info_relocated_name;
|
||
}
|
||
}
|
||
|
||
|
||
{
|
||
const char *aux_info_p;
|
||
|
||
/* Do a pre-pass on the lines in the aux_info file, making sure that all
|
||
of the source files referenced in there are at least as old as this
|
||
aux_info file itself. If not, go back and regenerate the aux_info
|
||
file anew. Don't do any of this for the syscalls file. */
|
||
|
||
if (!is_syscalls)
|
||
{
|
||
current_aux_info_lineno = 2;
|
||
|
||
for (aux_info_p = aux_info_second_line; *aux_info_p; )
|
||
{
|
||
if (referenced_file_is_newer (aux_info_p, aux_info_mtime))
|
||
{
|
||
free (aux_info_base);
|
||
free (aux_info_relocated_name);
|
||
if (keep_it && unlink (aux_info_filename) == -1)
|
||
{
|
||
int errno_val = errno;
|
||
notice ("%s: can't delete file '%s': %s\n",
|
||
pname, shortpath (NULL, aux_info_filename),
|
||
xstrerror (errno_val));
|
||
return;
|
||
}
|
||
must_create = 1;
|
||
goto start_over;
|
||
}
|
||
|
||
/* Skip over the rest of this line to start of next line. */
|
||
|
||
while (*aux_info_p != '\n')
|
||
aux_info_p++;
|
||
aux_info_p++;
|
||
current_aux_info_lineno++;
|
||
}
|
||
}
|
||
|
||
/* Now do the real pass on the aux_info lines. Save their information in
|
||
the in-core data base. */
|
||
|
||
current_aux_info_lineno = 2;
|
||
|
||
for (aux_info_p = aux_info_second_line; *aux_info_p;)
|
||
{
|
||
char *unexpanded_line = unexpand_if_needed (aux_info_p);
|
||
|
||
if (unexpanded_line)
|
||
{
|
||
save_def_or_dec (unexpanded_line, is_syscalls);
|
||
free (unexpanded_line);
|
||
}
|
||
else
|
||
save_def_or_dec (aux_info_p, is_syscalls);
|
||
|
||
/* Skip over the rest of this line and get to start of next line. */
|
||
|
||
while (*aux_info_p != '\n')
|
||
aux_info_p++;
|
||
aux_info_p++;
|
||
current_aux_info_lineno++;
|
||
}
|
||
}
|
||
|
||
free (aux_info_base);
|
||
free (aux_info_relocated_name);
|
||
}
|
||
|
||
#ifndef UNPROTOIZE
|
||
|
||
/* Check an individual filename for a .c suffix. If the filename has this
|
||
suffix, rename the file such that its suffix is changed to .C. This
|
||
function implements the -C option. */
|
||
|
||
static void
|
||
rename_c_file (const hash_table_entry *hp)
|
||
{
|
||
const char *filename = hp->symbol;
|
||
int last_char_index = strlen (filename) - 1;
|
||
char *const new_filename = alloca (strlen (filename)
|
||
+ strlen (cplus_suffix) + 1);
|
||
|
||
/* Note that we don't care here if the given file was converted or not. It
|
||
is possible that the given file was *not* converted, simply because there
|
||
was nothing in it which actually required conversion. Even in this case,
|
||
we want to do the renaming. Note that we only rename files with the .c
|
||
suffix (except for the syscalls file, which is left alone). */
|
||
|
||
if (filename[last_char_index] != 'c' || filename[last_char_index-1] != '.'
|
||
|| IS_SAME_PATH (syscalls_absolute_filename, filename))
|
||
return;
|
||
|
||
strcpy (new_filename, filename);
|
||
strcpy (&new_filename[last_char_index], cplus_suffix);
|
||
|
||
if (rename (filename, new_filename) == -1)
|
||
{
|
||
int errno_val = errno;
|
||
notice ("%s: warning: can't rename file '%s' to '%s': %s\n",
|
||
pname, shortpath (NULL, filename),
|
||
shortpath (NULL, new_filename), xstrerror (errno_val));
|
||
errors++;
|
||
return;
|
||
}
|
||
}
|
||
|
||
#endif /* !defined (UNPROTOIZE) */
|
||
|
||
/* Take the list of definitions and declarations attached to a particular
|
||
file_info node and reverse the order of the list. This should get the
|
||
list into an order such that the item with the lowest associated line
|
||
number is nearest the head of the list. When these lists are originally
|
||
built, they are in the opposite order. We want to traverse them in
|
||
normal line number order later (i.e. lowest to highest) so reverse the
|
||
order here. */
|
||
|
||
static void
|
||
reverse_def_dec_list (const hash_table_entry *hp)
|
||
{
|
||
file_info *file_p = hp->fip;
|
||
def_dec_info *prev = NULL;
|
||
def_dec_info *current = (def_dec_info *) file_p->defs_decs;
|
||
|
||
if (!current)
|
||
return; /* no list to reverse */
|
||
|
||
prev = current;
|
||
if (! (current = (def_dec_info *) current->next_in_file))
|
||
return; /* can't reverse a single list element */
|
||
|
||
prev->next_in_file = NULL;
|
||
|
||
while (current)
|
||
{
|
||
def_dec_info *next = (def_dec_info *) current->next_in_file;
|
||
|
||
current->next_in_file = prev;
|
||
prev = current;
|
||
current = next;
|
||
}
|
||
|
||
file_p->defs_decs = prev;
|
||
}
|
||
|
||
#ifndef UNPROTOIZE
|
||
|
||
/* Find the (only?) extern definition for a particular function name, starting
|
||
from the head of the linked list of entries for the given name. If we
|
||
cannot find an extern definition for the given function name, issue a
|
||
warning and scrounge around for the next best thing, i.e. an extern
|
||
function declaration with a prototype attached to it. Note that we only
|
||
allow such substitutions for extern declarations and never for static
|
||
declarations. That's because the only reason we allow them at all is
|
||
to let un-prototyped function declarations for system-supplied library
|
||
functions get their prototypes from our own extra SYSCALLS.c.X file which
|
||
contains all of the correct prototypes for system functions. */
|
||
|
||
static const def_dec_info *
|
||
find_extern_def (const def_dec_info *head, const def_dec_info *user)
|
||
{
|
||
const def_dec_info *dd_p;
|
||
const def_dec_info *extern_def_p = NULL;
|
||
int conflict_noted = 0;
|
||
|
||
/* Don't act too stupid here. Somebody may try to convert an entire system
|
||
in one swell fwoop (rather than one program at a time, as should be done)
|
||
and in that case, we may find that there are multiple extern definitions
|
||
of a given function name in the entire set of source files that we are
|
||
converting. If however one of these definitions resides in exactly the
|
||
same source file as the reference we are trying to satisfy then in that
|
||
case it would be stupid for us to fail to realize that this one definition
|
||
*must* be the precise one we are looking for.
|
||
|
||
To make sure that we don't miss an opportunity to make this "same file"
|
||
leap of faith, we do a prescan of the list of records relating to the
|
||
given function name, and we look (on this first scan) *only* for a
|
||
definition of the function which is in the same file as the reference
|
||
we are currently trying to satisfy. */
|
||
|
||
for (dd_p = head; dd_p; dd_p = dd_p->next_for_func)
|
||
if (dd_p->is_func_def && !dd_p->is_static && dd_p->file == user->file)
|
||
return dd_p;
|
||
|
||
/* Now, since we have not found a definition in the same file as the
|
||
reference, we scan the list again and consider all possibilities from
|
||
all files. Here we may get conflicts with the things listed in the
|
||
SYSCALLS.c.X file, but if that happens it only means that the source
|
||
code being converted contains its own definition of a function which
|
||
could have been supplied by libc.a. In such cases, we should avoid
|
||
issuing the normal warning, and defer to the definition given in the
|
||
user's own code. */
|
||
|
||
for (dd_p = head; dd_p; dd_p = dd_p->next_for_func)
|
||
if (dd_p->is_func_def && !dd_p->is_static)
|
||
{
|
||
if (!extern_def_p) /* Previous definition? */
|
||
extern_def_p = dd_p; /* Remember the first definition found. */
|
||
else
|
||
{
|
||
/* Ignore definition just found if it came from SYSCALLS.c.X. */
|
||
|
||
if (is_syscalls_file (dd_p->file))
|
||
continue;
|
||
|
||
/* Quietly replace the definition previously found with the one
|
||
just found if the previous one was from SYSCALLS.c.X. */
|
||
|
||
if (is_syscalls_file (extern_def_p->file))
|
||
{
|
||
extern_def_p = dd_p;
|
||
continue;
|
||
}
|
||
|
||
/* If we get here, then there is a conflict between two function
|
||
declarations for the same function, both of which came from the
|
||
user's own code. */
|
||
|
||
if (!conflict_noted) /* first time we noticed? */
|
||
{
|
||
conflict_noted = 1;
|
||
notice ("%s: conflicting extern definitions of '%s'\n",
|
||
pname, head->hash_entry->symbol);
|
||
if (!quiet_flag)
|
||
{
|
||
notice ("%s: declarations of '%s' will not be converted\n",
|
||
pname, head->hash_entry->symbol);
|
||
notice ("%s: conflict list for '%s' follows:\n",
|
||
pname, head->hash_entry->symbol);
|
||
fprintf (stderr, "%s: %s(%d): %s\n",
|
||
pname,
|
||
shortpath (NULL, extern_def_p->file->hash_entry->symbol),
|
||
extern_def_p->line, extern_def_p->ansi_decl);
|
||
}
|
||
}
|
||
if (!quiet_flag)
|
||
fprintf (stderr, "%s: %s(%d): %s\n",
|
||
pname,
|
||
shortpath (NULL, dd_p->file->hash_entry->symbol),
|
||
dd_p->line, dd_p->ansi_decl);
|
||
}
|
||
}
|
||
|
||
/* We want to err on the side of caution, so if we found multiple conflicting
|
||
definitions for the same function, treat this as being that same as if we
|
||
had found no definitions (i.e. return NULL). */
|
||
|
||
if (conflict_noted)
|
||
return NULL;
|
||
|
||
if (!extern_def_p)
|
||
{
|
||
/* We have no definitions for this function so do the next best thing.
|
||
Search for an extern declaration already in prototype form. */
|
||
|
||
for (dd_p = head; dd_p; dd_p = dd_p->next_for_func)
|
||
if (!dd_p->is_func_def && !dd_p->is_static && dd_p->prototyped)
|
||
{
|
||
extern_def_p = dd_p; /* save a pointer to the definition */
|
||
if (!quiet_flag)
|
||
notice ("%s: warning: using formals list from %s(%d) for function '%s'\n",
|
||
pname,
|
||
shortpath (NULL, dd_p->file->hash_entry->symbol),
|
||
dd_p->line, dd_p->hash_entry->symbol);
|
||
break;
|
||
}
|
||
|
||
/* Gripe about unprototyped function declarations that we found no
|
||
corresponding definition (or other source of prototype information)
|
||
for.
|
||
|
||
Gripe even if the unprototyped declaration we are worried about
|
||
exists in a file in one of the "system" include directories. We
|
||
can gripe about these because we should have at least found a
|
||
corresponding (pseudo) definition in the SYSCALLS.c.X file. If we
|
||
didn't, then that means that the SYSCALLS.c.X file is missing some
|
||
needed prototypes for this particular system. That is worth telling
|
||
the user about! */
|
||
|
||
if (!extern_def_p)
|
||
{
|
||
const char *file = user->file->hash_entry->symbol;
|
||
|
||
if (!quiet_flag)
|
||
if (in_system_include_dir (file))
|
||
{
|
||
/* Why copy this string into `needed' at all?
|
||
Why not just use user->ansi_decl without copying? */
|
||
char *needed = alloca (strlen (user->ansi_decl) + 1);
|
||
char *p;
|
||
|
||
strcpy (needed, user->ansi_decl);
|
||
p = strstr (needed, user->hash_entry->symbol)
|
||
+ strlen (user->hash_entry->symbol) + 2;
|
||
/* Avoid having ??? in the string. */
|
||
*p++ = '?';
|
||
*p++ = '?';
|
||
*p++ = '?';
|
||
strcpy (p, ");");
|
||
|
||
notice ("%s: %d: '%s' used but missing from SYSCALLS\n",
|
||
shortpath (NULL, file), user->line,
|
||
needed+7); /* Don't print "extern " */
|
||
}
|
||
#if 0
|
||
else
|
||
notice ("%s: %d: warning: no extern definition for '%s'\n",
|
||
shortpath (NULL, file), user->line,
|
||
user->hash_entry->symbol);
|
||
#endif
|
||
}
|
||
}
|
||
return extern_def_p;
|
||
}
|
||
|
||
/* Find the (only?) static definition for a particular function name in a
|
||
given file. Here we get the function-name and the file info indirectly
|
||
from the def_dec_info record pointer which is passed in. */
|
||
|
||
static const def_dec_info *
|
||
find_static_definition (const def_dec_info *user)
|
||
{
|
||
const def_dec_info *head = user->hash_entry->ddip;
|
||
const def_dec_info *dd_p;
|
||
int num_static_defs = 0;
|
||
const def_dec_info *static_def_p = NULL;
|
||
|
||
for (dd_p = head; dd_p; dd_p = dd_p->next_for_func)
|
||
if (dd_p->is_func_def && dd_p->is_static && (dd_p->file == user->file))
|
||
{
|
||
static_def_p = dd_p; /* save a pointer to the definition */
|
||
num_static_defs++;
|
||
}
|
||
if (num_static_defs == 0)
|
||
{
|
||
if (!quiet_flag)
|
||
notice ("%s: warning: no static definition for '%s' in file '%s'\n",
|
||
pname, head->hash_entry->symbol,
|
||
shortpath (NULL, user->file->hash_entry->symbol));
|
||
}
|
||
else if (num_static_defs > 1)
|
||
{
|
||
notice ("%s: multiple static defs of '%s' in file '%s'\n",
|
||
pname, head->hash_entry->symbol,
|
||
shortpath (NULL, user->file->hash_entry->symbol));
|
||
return NULL;
|
||
}
|
||
return static_def_p;
|
||
}
|
||
|
||
/* Find good prototype style formal argument lists for all of the function
|
||
declarations which didn't have them before now.
|
||
|
||
To do this we consider each function name one at a time. For each function
|
||
name, we look at the items on the linked list of def_dec_info records for
|
||
that particular name.
|
||
|
||
Somewhere on this list we should find one (and only one) def_dec_info
|
||
record which represents the actual function definition, and this record
|
||
should have a nice formal argument list already associated with it.
|
||
|
||
Thus, all we have to do is to connect up all of the other def_dec_info
|
||
records for this particular function name to the special one which has
|
||
the full-blown formals list.
|
||
|
||
Of course it is a little more complicated than just that. See below for
|
||
more details. */
|
||
|
||
static void
|
||
connect_defs_and_decs (const hash_table_entry *hp)
|
||
{
|
||
const def_dec_info *dd_p;
|
||
const def_dec_info *extern_def_p = NULL;
|
||
int first_extern_reference = 1;
|
||
|
||
/* Traverse the list of definitions and declarations for this particular
|
||
function name. For each item on the list, if it is a function
|
||
definition (either old style or new style) then GCC has already been
|
||
kind enough to produce a prototype for us, and it is associated with
|
||
the item already, so declare the item as its own associated "definition".
|
||
|
||
Also, for each item which is only a function declaration, but which
|
||
nonetheless has its own prototype already (obviously supplied by the user)
|
||
declare the item as its own definition.
|
||
|
||
Note that when/if there are multiple user-supplied prototypes already
|
||
present for multiple declarations of any given function, these multiple
|
||
prototypes *should* all match exactly with one another and with the
|
||
prototype for the actual function definition. We don't check for this
|
||
here however, since we assume that the compiler must have already done
|
||
this consistency checking when it was creating the .X files. */
|
||
|
||
for (dd_p = hp->ddip; dd_p; dd_p = dd_p->next_for_func)
|
||
if (dd_p->prototyped)
|
||
((NONCONST def_dec_info *) dd_p)->definition = dd_p;
|
||
|
||
/* Traverse the list of definitions and declarations for this particular
|
||
function name. For each item on the list, if it is an extern function
|
||
declaration and if it has no associated definition yet, go try to find
|
||
the matching extern definition for the declaration.
|
||
|
||
When looking for the matching function definition, warn the user if we
|
||
fail to find one.
|
||
|
||
If we find more that one function definition also issue a warning.
|
||
|
||
Do the search for the matching definition only once per unique function
|
||
name (and only when absolutely needed) so that we can avoid putting out
|
||
redundant warning messages, and so that we will only put out warning
|
||
messages when there is actually a reference (i.e. a declaration) for
|
||
which we need to find a matching definition. */
|
||
|
||
for (dd_p = hp->ddip; dd_p; dd_p = dd_p->next_for_func)
|
||
if (!dd_p->is_func_def && !dd_p->is_static && !dd_p->definition)
|
||
{
|
||
if (first_extern_reference)
|
||
{
|
||
extern_def_p = find_extern_def (hp->ddip, dd_p);
|
||
first_extern_reference = 0;
|
||
}
|
||
((NONCONST def_dec_info *) dd_p)->definition = extern_def_p;
|
||
}
|
||
|
||
/* Traverse the list of definitions and declarations for this particular
|
||
function name. For each item on the list, if it is a static function
|
||
declaration and if it has no associated definition yet, go try to find
|
||
the matching static definition for the declaration within the same file.
|
||
|
||
When looking for the matching function definition, warn the user if we
|
||
fail to find one in the same file with the declaration, and refuse to
|
||
convert this kind of cross-file static function declaration. After all,
|
||
this is stupid practice and should be discouraged.
|
||
|
||
We don't have to worry about the possibility that there is more than one
|
||
matching function definition in the given file because that would have
|
||
been flagged as an error by the compiler.
|
||
|
||
Do the search for the matching definition only once per unique
|
||
function-name/source-file pair (and only when absolutely needed) so that
|
||
we can avoid putting out redundant warning messages, and so that we will
|
||
only put out warning messages when there is actually a reference (i.e. a
|
||
declaration) for which we actually need to find a matching definition. */
|
||
|
||
for (dd_p = hp->ddip; dd_p; dd_p = dd_p->next_for_func)
|
||
if (!dd_p->is_func_def && dd_p->is_static && !dd_p->definition)
|
||
{
|
||
const def_dec_info *dd_p2;
|
||
const def_dec_info *static_def;
|
||
|
||
/* We have now found a single static declaration for which we need to
|
||
find a matching definition. We want to minimize the work (and the
|
||
number of warnings), so we will find an appropriate (matching)
|
||
static definition for this declaration, and then distribute it
|
||
(as the definition for) any and all other static declarations
|
||
for this function name which occur within the same file, and which
|
||
do not already have definitions.
|
||
|
||
Note that a trick is used here to prevent subsequent attempts to
|
||
call find_static_definition for a given function-name & file
|
||
if the first such call returns NULL. Essentially, we convert
|
||
these NULL return values to -1, and put the -1 into the definition
|
||
field for each other static declaration from the same file which
|
||
does not already have an associated definition.
|
||
This makes these other static declarations look like they are
|
||
actually defined already when the outer loop here revisits them
|
||
later on. Thus, the outer loop will skip over them. Later, we
|
||
turn the -1's back to NULL's. */
|
||
|
||
((NONCONST def_dec_info *) dd_p)->definition =
|
||
(static_def = find_static_definition (dd_p))
|
||
? static_def
|
||
: (const def_dec_info *) -1;
|
||
|
||
for (dd_p2 = dd_p->next_for_func; dd_p2; dd_p2 = dd_p2->next_for_func)
|
||
if (!dd_p2->is_func_def && dd_p2->is_static
|
||
&& !dd_p2->definition && (dd_p2->file == dd_p->file))
|
||
((NONCONST def_dec_info *) dd_p2)->definition = dd_p->definition;
|
||
}
|
||
|
||
/* Convert any dummy (-1) definitions we created in the step above back to
|
||
NULL's (as they should be). */
|
||
|
||
for (dd_p = hp->ddip; dd_p; dd_p = dd_p->next_for_func)
|
||
if (dd_p->definition == (def_dec_info *) -1)
|
||
((NONCONST def_dec_info *) dd_p)->definition = NULL;
|
||
}
|
||
|
||
#endif /* !defined (UNPROTOIZE) */
|
||
|
||
/* Give a pointer into the clean text buffer, return a number which is the
|
||
original source line number that the given pointer points into. */
|
||
|
||
static int
|
||
identify_lineno (const char *clean_p)
|
||
{
|
||
int line_num = 1;
|
||
const char *scan_p;
|
||
|
||
for (scan_p = clean_text_base; scan_p <= clean_p; scan_p++)
|
||
if (*scan_p == '\n')
|
||
line_num++;
|
||
return line_num;
|
||
}
|
||
|
||
/* Issue an error message and give up on doing this particular edit. */
|
||
|
||
static void
|
||
declare_source_confusing (const char *clean_p)
|
||
{
|
||
if (!quiet_flag)
|
||
{
|
||
if (clean_p == 0)
|
||
notice ("%s: %d: warning: source too confusing\n",
|
||
shortpath (NULL, convert_filename), last_known_line_number);
|
||
else
|
||
notice ("%s: %d: warning: source too confusing\n",
|
||
shortpath (NULL, convert_filename),
|
||
identify_lineno (clean_p));
|
||
}
|
||
longjmp (source_confusion_recovery, 1);
|
||
}
|
||
|
||
/* Check that a condition which is expected to be true in the original source
|
||
code is in fact true. If not, issue an error message and give up on
|
||
converting this particular source file. */
|
||
|
||
static void
|
||
check_source (int cond, const char *clean_p)
|
||
{
|
||
if (!cond)
|
||
declare_source_confusing (clean_p);
|
||
}
|
||
|
||
/* If we think of the in-core cleaned text buffer as a memory mapped
|
||
file (with the variable last_known_line_start acting as sort of a
|
||
file pointer) then we can imagine doing "seeks" on the buffer. The
|
||
following routine implements a kind of "seek" operation for the in-core
|
||
(cleaned) copy of the source file. When finished, it returns a pointer to
|
||
the start of a given (numbered) line in the cleaned text buffer.
|
||
|
||
Note that protoize only has to "seek" in the forward direction on the
|
||
in-core cleaned text file buffers, and it never needs to back up.
|
||
|
||
This routine is made a little bit faster by remembering the line number
|
||
(and pointer value) supplied (and returned) from the previous "seek".
|
||
This prevents us from always having to start all over back at the top
|
||
of the in-core cleaned buffer again. */
|
||
|
||
static const char *
|
||
seek_to_line (int n)
|
||
{
|
||
gcc_assert (n >= last_known_line_number);
|
||
|
||
while (n > last_known_line_number)
|
||
{
|
||
while (*last_known_line_start != '\n')
|
||
check_source (++last_known_line_start < clean_text_limit, 0);
|
||
last_known_line_start++;
|
||
last_known_line_number++;
|
||
}
|
||
return last_known_line_start;
|
||
}
|
||
|
||
/* Given a pointer to a character in the cleaned text buffer, return a pointer
|
||
to the next non-whitespace character which follows it. */
|
||
|
||
static const char *
|
||
forward_to_next_token_char (const char *ptr)
|
||
{
|
||
for (++ptr; ISSPACE ((const unsigned char)*ptr);
|
||
check_source (++ptr < clean_text_limit, 0))
|
||
continue;
|
||
return ptr;
|
||
}
|
||
|
||
/* Copy a chunk of text of length `len' and starting at `str' to the current
|
||
output buffer. Note that all attempts to add stuff to the current output
|
||
buffer ultimately go through here. */
|
||
|
||
static void
|
||
output_bytes (const char *str, size_t len)
|
||
{
|
||
if ((repl_write_ptr + 1) + len >= repl_text_limit)
|
||
{
|
||
size_t new_size = (repl_text_limit - repl_text_base) << 1;
|
||
char *new_buf = xrealloc (repl_text_base, new_size);
|
||
|
||
repl_write_ptr = new_buf + (repl_write_ptr - repl_text_base);
|
||
repl_text_base = new_buf;
|
||
repl_text_limit = new_buf + new_size;
|
||
}
|
||
memcpy (repl_write_ptr + 1, str, len);
|
||
repl_write_ptr += len;
|
||
}
|
||
|
||
/* Copy all bytes (except the trailing null) of a null terminated string to
|
||
the current output buffer. */
|
||
|
||
static void
|
||
output_string (const char *str)
|
||
{
|
||
output_bytes (str, strlen (str));
|
||
}
|
||
|
||
/* Copy some characters from the original text buffer to the current output
|
||
buffer.
|
||
|
||
This routine takes a pointer argument `p' which is assumed to be a pointer
|
||
into the cleaned text buffer. The bytes which are copied are the `original'
|
||
equivalents for the set of bytes between the last value of `clean_read_ptr'
|
||
and the argument value `p'.
|
||
|
||
The set of bytes copied however, comes *not* from the cleaned text buffer,
|
||
but rather from the direct counterparts of these bytes within the original
|
||
text buffer.
|
||
|
||
Thus, when this function is called, some bytes from the original text
|
||
buffer (which may include original comments and preprocessing directives)
|
||
will be copied into the output buffer.
|
||
|
||
Note that the request implied when this routine is called includes the
|
||
byte pointed to by the argument pointer `p'. */
|
||
|
||
static void
|
||
output_up_to (const char *p)
|
||
{
|
||
size_t copy_length = (size_t) (p - clean_read_ptr);
|
||
const char *copy_start = orig_text_base+(clean_read_ptr-clean_text_base)+1;
|
||
|
||
if (copy_length == 0)
|
||
return;
|
||
|
||
output_bytes (copy_start, copy_length);
|
||
clean_read_ptr = p;
|
||
}
|
||
|
||
/* Given a pointer to a def_dec_info record which represents some form of
|
||
definition of a function (perhaps a real definition, or in lieu of that
|
||
perhaps just a declaration with a full prototype) return true if this
|
||
function is one which we should avoid converting. Return false
|
||
otherwise. */
|
||
|
||
static int
|
||
other_variable_style_function (const char *ansi_header)
|
||
{
|
||
#ifdef UNPROTOIZE
|
||
|
||
/* See if we have a stdarg function, or a function which has stdarg style
|
||
parameters or a stdarg style return type. */
|
||
|
||
return strstr (ansi_header, "...") != 0;
|
||
|
||
#else /* !defined (UNPROTOIZE) */
|
||
|
||
/* See if we have a varargs function, or a function which has varargs style
|
||
parameters or a varargs style return type. */
|
||
|
||
const char *p;
|
||
int len = strlen (varargs_style_indicator);
|
||
|
||
for (p = ansi_header; p; )
|
||
{
|
||
const char *candidate;
|
||
|
||
if ((candidate = strstr (p, varargs_style_indicator)) == 0)
|
||
return 0;
|
||
else
|
||
if (!is_id_char (candidate[-1]) && !is_id_char (candidate[len]))
|
||
return 1;
|
||
else
|
||
p = candidate + 1;
|
||
}
|
||
return 0;
|
||
#endif /* !defined (UNPROTOIZE) */
|
||
}
|
||
|
||
/* Do the editing operation specifically for a function "declaration". Note
|
||
that editing for function "definitions" are handled in a separate routine
|
||
below. */
|
||
|
||
static void
|
||
edit_fn_declaration (const def_dec_info *def_dec_p,
|
||
const char *volatile clean_text_p)
|
||
{
|
||
const char *start_formals;
|
||
const char *end_formals;
|
||
const char *function_to_edit = def_dec_p->hash_entry->symbol;
|
||
size_t func_name_len = strlen (function_to_edit);
|
||
const char *end_of_fn_name;
|
||
|
||
#ifndef UNPROTOIZE
|
||
|
||
const f_list_chain_item *this_f_list_chain_item;
|
||
const def_dec_info *definition = def_dec_p->definition;
|
||
|
||
/* If we are protoizing, and if we found no corresponding definition for
|
||
this particular function declaration, then just leave this declaration
|
||
exactly as it is. */
|
||
|
||
if (!definition)
|
||
return;
|
||
|
||
/* If we are protoizing, and if the corresponding definition that we found
|
||
for this particular function declaration defined an old style varargs
|
||
function, then we want to issue a warning and just leave this function
|
||
declaration unconverted. */
|
||
|
||
if (other_variable_style_function (definition->ansi_decl))
|
||
{
|
||
if (!quiet_flag)
|
||
notice ("%s: %d: warning: varargs function declaration not converted\n",
|
||
shortpath (NULL, def_dec_p->file->hash_entry->symbol),
|
||
def_dec_p->line);
|
||
return;
|
||
}
|
||
|
||
#endif /* !defined (UNPROTOIZE) */
|
||
|
||
/* Setup here to recover from confusing source code detected during this
|
||
particular "edit". */
|
||
|
||
save_pointers ();
|
||
if (setjmp (source_confusion_recovery))
|
||
{
|
||
restore_pointers ();
|
||
notice ("%s: declaration of function '%s' not converted\n",
|
||
pname, function_to_edit);
|
||
return;
|
||
}
|
||
|
||
/* We are editing a function declaration. The line number we did a seek to
|
||
contains the comma or semicolon which follows the declaration. Our job
|
||
now is to scan backwards looking for the function name. This name *must*
|
||
be followed by open paren (ignoring whitespace, of course). We need to
|
||
replace everything between that open paren and the corresponding closing
|
||
paren. If we are protoizing, we need to insert the prototype-style
|
||
formals lists. If we are unprotoizing, we need to just delete everything
|
||
between the pairs of opening and closing parens. */
|
||
|
||
/* First move up to the end of the line. */
|
||
|
||
while (*clean_text_p != '\n')
|
||
check_source (++clean_text_p < clean_text_limit, 0);
|
||
clean_text_p--; /* Point to just before the newline character. */
|
||
|
||
/* Now we can scan backwards for the function name. */
|
||
|
||
do
|
||
{
|
||
for (;;)
|
||
{
|
||
/* Scan leftwards until we find some character which can be
|
||
part of an identifier. */
|
||
|
||
while (!is_id_char (*clean_text_p))
|
||
check_source (--clean_text_p > clean_read_ptr, 0);
|
||
|
||
/* Scan backwards until we find a char that cannot be part of an
|
||
identifier. */
|
||
|
||
while (is_id_char (*clean_text_p))
|
||
check_source (--clean_text_p > clean_read_ptr, 0);
|
||
|
||
/* Having found an "id break", see if the following id is the one
|
||
that we are looking for. If so, then exit from this loop. */
|
||
|
||
if (!strncmp (clean_text_p+1, function_to_edit, func_name_len))
|
||
{
|
||
char ch = *(clean_text_p + 1 + func_name_len);
|
||
|
||
/* Must also check to see that the name in the source text
|
||
ends where it should (in order to prevent bogus matches
|
||
on similar but longer identifiers. */
|
||
|
||
if (! is_id_char (ch))
|
||
break; /* exit from loop */
|
||
}
|
||
}
|
||
|
||
/* We have now found the first perfect match for the function name in
|
||
our backward search. This may or may not be the actual function
|
||
name at the start of the actual function declaration (i.e. we could
|
||
have easily been mislead). We will try to avoid getting fooled too
|
||
often by looking forward for the open paren which should follow the
|
||
identifier we just found. We ignore whitespace while hunting. If
|
||
the next non-whitespace byte we see is *not* an open left paren,
|
||
then we must assume that we have been fooled and we start over
|
||
again accordingly. Note that there is no guarantee, that even if
|
||
we do see the open paren, that we are in the right place.
|
||
Programmers do the strangest things sometimes! */
|
||
|
||
end_of_fn_name = clean_text_p + strlen (def_dec_p->hash_entry->symbol);
|
||
start_formals = forward_to_next_token_char (end_of_fn_name);
|
||
}
|
||
while (*start_formals != '(');
|
||
|
||
/* start_of_formals now points to the opening left paren which immediately
|
||
follows the name of the function. */
|
||
|
||
/* Note that there may be several formals lists which need to be modified
|
||
due to the possibility that the return type of this function is a
|
||
pointer-to-function type. If there are several formals lists, we
|
||
convert them in left-to-right order here. */
|
||
|
||
#ifndef UNPROTOIZE
|
||
this_f_list_chain_item = definition->f_list_chain;
|
||
#endif /* !defined (UNPROTOIZE) */
|
||
|
||
for (;;)
|
||
{
|
||
{
|
||
int depth;
|
||
|
||
end_formals = start_formals + 1;
|
||
depth = 1;
|
||
for (; depth; check_source (++end_formals < clean_text_limit, 0))
|
||
{
|
||
switch (*end_formals)
|
||
{
|
||
case '(':
|
||
depth++;
|
||
break;
|
||
case ')':
|
||
depth--;
|
||
break;
|
||
}
|
||
}
|
||
end_formals--;
|
||
}
|
||
|
||
/* end_formals now points to the closing right paren of the formals
|
||
list whose left paren is pointed to by start_formals. */
|
||
|
||
/* Now, if we are protoizing, we insert the new ANSI-style formals list
|
||
attached to the associated definition of this function. If however
|
||
we are unprotoizing, then we simply delete any formals list which
|
||
may be present. */
|
||
|
||
output_up_to (start_formals);
|
||
#ifndef UNPROTOIZE
|
||
if (this_f_list_chain_item)
|
||
{
|
||
output_string (this_f_list_chain_item->formals_list);
|
||
this_f_list_chain_item = this_f_list_chain_item->chain_next;
|
||
}
|
||
else
|
||
{
|
||
if (!quiet_flag)
|
||
notice ("%s: warning: too many parameter lists in declaration of '%s'\n",
|
||
pname, def_dec_p->hash_entry->symbol);
|
||
check_source (0, end_formals); /* leave the declaration intact */
|
||
}
|
||
#endif /* !defined (UNPROTOIZE) */
|
||
clean_read_ptr = end_formals - 1;
|
||
|
||
/* Now see if it looks like there may be another formals list associated
|
||
with the function declaration that we are converting (following the
|
||
formals list that we just converted. */
|
||
|
||
{
|
||
const char *another_r_paren = forward_to_next_token_char (end_formals);
|
||
|
||
if ((*another_r_paren != ')')
|
||
|| (*(start_formals = forward_to_next_token_char (another_r_paren)) != '('))
|
||
{
|
||
#ifndef UNPROTOIZE
|
||
if (this_f_list_chain_item)
|
||
{
|
||
if (!quiet_flag)
|
||
notice ("\n%s: warning: too few parameter lists in declaration of '%s'\n",
|
||
pname, def_dec_p->hash_entry->symbol);
|
||
check_source (0, start_formals); /* leave the decl intact */
|
||
}
|
||
#endif /* !defined (UNPROTOIZE) */
|
||
break;
|
||
|
||
}
|
||
}
|
||
|
||
/* There does appear to be yet another formals list, so loop around
|
||
again, and convert it also. */
|
||
}
|
||
}
|
||
|
||
/* Edit a whole group of formals lists, starting with the rightmost one
|
||
from some set of formals lists. This routine is called once (from the
|
||
outside) for each function declaration which is converted. It is
|
||
recursive however, and it calls itself once for each remaining formal
|
||
list that lies to the left of the one it was originally called to work
|
||
on. Thus, a whole set gets done in right-to-left order.
|
||
|
||
This routine returns nonzero if it thinks that it should not be trying
|
||
to convert this particular function definition (because the name of the
|
||
function doesn't match the one expected). */
|
||
|
||
static int
|
||
edit_formals_lists (const char *end_formals, unsigned int f_list_count,
|
||
const def_dec_info *def_dec_p)
|
||
{
|
||
const char *start_formals;
|
||
int depth;
|
||
|
||
start_formals = end_formals - 1;
|
||
depth = 1;
|
||
for (; depth; check_source (--start_formals > clean_read_ptr, 0))
|
||
{
|
||
switch (*start_formals)
|
||
{
|
||
case '(':
|
||
depth--;
|
||
break;
|
||
case ')':
|
||
depth++;
|
||
break;
|
||
}
|
||
}
|
||
start_formals++;
|
||
|
||
/* start_formals now points to the opening left paren of the formals list. */
|
||
|
||
f_list_count--;
|
||
|
||
if (f_list_count)
|
||
{
|
||
const char *next_end;
|
||
|
||
/* There should be more formal lists to the left of here. */
|
||
|
||
next_end = start_formals - 1;
|
||
check_source (next_end > clean_read_ptr, 0);
|
||
while (ISSPACE ((const unsigned char)*next_end))
|
||
check_source (--next_end > clean_read_ptr, 0);
|
||
check_source (*next_end == ')', next_end);
|
||
check_source (--next_end > clean_read_ptr, 0);
|
||
check_source (*next_end == ')', next_end);
|
||
if (edit_formals_lists (next_end, f_list_count, def_dec_p))
|
||
return 1;
|
||
}
|
||
|
||
/* Check that the function name in the header we are working on is the same
|
||
as the one we would expect to find. If not, issue a warning and return
|
||
nonzero. */
|
||
|
||
if (f_list_count == 0)
|
||
{
|
||
const char *expected = def_dec_p->hash_entry->symbol;
|
||
const char *func_name_start;
|
||
const char *func_name_limit;
|
||
size_t func_name_len;
|
||
|
||
for (func_name_limit = start_formals-1;
|
||
ISSPACE ((const unsigned char)*func_name_limit); )
|
||
check_source (--func_name_limit > clean_read_ptr, 0);
|
||
|
||
for (func_name_start = func_name_limit++;
|
||
is_id_char (*func_name_start);
|
||
func_name_start--)
|
||
check_source (func_name_start > clean_read_ptr, 0);
|
||
func_name_start++;
|
||
func_name_len = func_name_limit - func_name_start;
|
||
if (func_name_len == 0)
|
||
check_source (0, func_name_start);
|
||
if (func_name_len != strlen (expected)
|
||
|| strncmp (func_name_start, expected, func_name_len))
|
||
{
|
||
notice ("%s: %d: warning: found '%s' but expected '%s'\n",
|
||
shortpath (NULL, def_dec_p->file->hash_entry->symbol),
|
||
identify_lineno (func_name_start),
|
||
dupnstr (func_name_start, func_name_len),
|
||
expected);
|
||
return 1;
|
||
}
|
||
}
|
||
|
||
output_up_to (start_formals);
|
||
|
||
#ifdef UNPROTOIZE
|
||
if (f_list_count == 0)
|
||
output_string (def_dec_p->formal_names);
|
||
#else /* !defined (UNPROTOIZE) */
|
||
{
|
||
unsigned f_list_depth;
|
||
const f_list_chain_item *flci_p = def_dec_p->f_list_chain;
|
||
|
||
/* At this point, the current value of f_list count says how many
|
||
links we have to follow through the f_list_chain to get to the
|
||
particular formals list that we need to output next. */
|
||
|
||
for (f_list_depth = 0; f_list_depth < f_list_count; f_list_depth++)
|
||
flci_p = flci_p->chain_next;
|
||
output_string (flci_p->formals_list);
|
||
}
|
||
#endif /* !defined (UNPROTOIZE) */
|
||
|
||
clean_read_ptr = end_formals - 1;
|
||
return 0;
|
||
}
|
||
|
||
/* Given a pointer to a byte in the clean text buffer which points to
|
||
the beginning of a line that contains a "follower" token for a
|
||
function definition header, do whatever is necessary to find the
|
||
right closing paren for the rightmost formals list of the function
|
||
definition header. */
|
||
|
||
static const char *
|
||
find_rightmost_formals_list (const char *clean_text_p)
|
||
{
|
||
const char *end_formals;
|
||
|
||
/* We are editing a function definition. The line number we did a seek
|
||
to contains the first token which immediately follows the entire set of
|
||
formals lists which are part of this particular function definition
|
||
header.
|
||
|
||
Our job now is to scan leftwards in the clean text looking for the
|
||
right-paren which is at the end of the function header's rightmost
|
||
formals list.
|
||
|
||
If we ignore whitespace, this right paren should be the first one we
|
||
see which is (ignoring whitespace) immediately followed either by the
|
||
open curly-brace beginning the function body or by an alphabetic
|
||
character (in the case where the function definition is in old (K&R)
|
||
style and there are some declarations of formal parameters). */
|
||
|
||
/* It is possible that the right paren we are looking for is on the
|
||
current line (together with its following token). Just in case that
|
||
might be true, we start out here by skipping down to the right end of
|
||
the current line before starting our scan. */
|
||
|
||
for (end_formals = clean_text_p; *end_formals != '\n'; end_formals++)
|
||
continue;
|
||
end_formals--;
|
||
|
||
#ifdef UNPROTOIZE
|
||
|
||
/* Now scan backwards while looking for the right end of the rightmost
|
||
formals list associated with this function definition. */
|
||
|
||
{
|
||
char ch;
|
||
const char *l_brace_p;
|
||
|
||
/* Look leftward and try to find a right-paren. */
|
||
|
||
while (*end_formals != ')')
|
||
{
|
||
if (ISSPACE ((unsigned char)*end_formals))
|
||
while (ISSPACE ((unsigned char)*end_formals))
|
||
check_source (--end_formals > clean_read_ptr, 0);
|
||
else
|
||
check_source (--end_formals > clean_read_ptr, 0);
|
||
}
|
||
|
||
ch = *(l_brace_p = forward_to_next_token_char (end_formals));
|
||
/* Since we are unprotoizing an ANSI-style (prototyped) function
|
||
definition, there had better not be anything (except whitespace)
|
||
between the end of the ANSI formals list and the beginning of the
|
||
function body (i.e. the '{'). */
|
||
|
||
check_source (ch == '{', l_brace_p);
|
||
}
|
||
|
||
#else /* !defined (UNPROTOIZE) */
|
||
|
||
/* Now scan backwards while looking for the right end of the rightmost
|
||
formals list associated with this function definition. */
|
||
|
||
while (1)
|
||
{
|
||
char ch;
|
||
const char *l_brace_p;
|
||
|
||
/* Look leftward and try to find a right-paren. */
|
||
|
||
while (*end_formals != ')')
|
||
{
|
||
if (ISSPACE ((const unsigned char)*end_formals))
|
||
while (ISSPACE ((const unsigned char)*end_formals))
|
||
check_source (--end_formals > clean_read_ptr, 0);
|
||
else
|
||
check_source (--end_formals > clean_read_ptr, 0);
|
||
}
|
||
|
||
ch = *(l_brace_p = forward_to_next_token_char (end_formals));
|
||
|
||
/* Since it is possible that we found a right paren before the starting
|
||
'{' of the body which IS NOT the one at the end of the real K&R
|
||
formals list (say for instance, we found one embedded inside one of
|
||
the old K&R formal parameter declarations) we have to check to be
|
||
sure that this is in fact the right paren that we were looking for.
|
||
|
||
The one we were looking for *must* be followed by either a '{' or
|
||
by an alphabetic character, while others *cannot* validly be followed
|
||
by such characters. */
|
||
|
||
if ((ch == '{') || ISALPHA ((unsigned char) ch))
|
||
break;
|
||
|
||
/* At this point, we have found a right paren, but we know that it is
|
||
not the one we were looking for, so backup one character and keep
|
||
looking. */
|
||
|
||
check_source (--end_formals > clean_read_ptr, 0);
|
||
}
|
||
|
||
#endif /* !defined (UNPROTOIZE) */
|
||
|
||
return end_formals;
|
||
}
|
||
|
||
#ifndef UNPROTOIZE
|
||
|
||
/* Insert into the output file a totally new declaration for a function
|
||
which (up until now) was being called from within the current block
|
||
without having been declared at any point such that the declaration
|
||
was visible (i.e. in scope) at the point of the call.
|
||
|
||
We need to add in explicit declarations for all such function calls
|
||
in order to get the full benefit of prototype-based function call
|
||
parameter type checking. */
|
||
|
||
static void
|
||
add_local_decl (const def_dec_info *def_dec_p, const char *clean_text_p)
|
||
{
|
||
const char *start_of_block;
|
||
const char *function_to_edit = def_dec_p->hash_entry->symbol;
|
||
|
||
/* Don't insert new local explicit declarations unless explicitly requested
|
||
to do so. */
|
||
|
||
if (!local_flag)
|
||
return;
|
||
|
||
/* Setup here to recover from confusing source code detected during this
|
||
particular "edit". */
|
||
|
||
save_pointers ();
|
||
if (setjmp (source_confusion_recovery))
|
||
{
|
||
restore_pointers ();
|
||
notice ("%s: local declaration for function '%s' not inserted\n",
|
||
pname, function_to_edit);
|
||
return;
|
||
}
|
||
|
||
/* We have already done a seek to the start of the line which should
|
||
contain *the* open curly brace which begins the block in which we need
|
||
to insert an explicit function declaration (to replace the implicit one).
|
||
|
||
Now we scan that line, starting from the left, until we find the
|
||
open curly brace we are looking for. Note that there may actually be
|
||
multiple open curly braces on the given line, but we will be happy
|
||
with the leftmost one no matter what. */
|
||
|
||
start_of_block = clean_text_p;
|
||
while (*start_of_block != '{' && *start_of_block != '\n')
|
||
check_source (++start_of_block < clean_text_limit, 0);
|
||
|
||
/* Note that the line from the original source could possibly
|
||
contain *no* open curly braces! This happens if the line contains
|
||
a macro call which expands into a chunk of text which includes a
|
||
block (and that block's associated open and close curly braces).
|
||
In cases like this, we give up, issue a warning, and do nothing. */
|
||
|
||
if (*start_of_block != '{')
|
||
{
|
||
if (!quiet_flag)
|
||
notice ("\n%s: %d: warning: can't add declaration of '%s' into macro call\n",
|
||
def_dec_p->file->hash_entry->symbol, def_dec_p->line,
|
||
def_dec_p->hash_entry->symbol);
|
||
return;
|
||
}
|
||
|
||
/* Figure out what a nice (pretty) indentation would be for the new
|
||
declaration we are adding. In order to do this, we must scan forward
|
||
from the '{' until we find the first line which starts with some
|
||
non-whitespace characters (i.e. real "token" material). */
|
||
|
||
{
|
||
const char *ep = forward_to_next_token_char (start_of_block) - 1;
|
||
const char *sp;
|
||
|
||
/* Now we have ep pointing at the rightmost byte of some existing indent
|
||
stuff. At least that is the hope.
|
||
|
||
We can now just scan backwards and find the left end of the existing
|
||
indentation string, and then copy it to the output buffer. */
|
||
|
||
for (sp = ep; ISSPACE ((const unsigned char)*sp) && *sp != '\n'; sp--)
|
||
continue;
|
||
|
||
/* Now write out the open { which began this block, and any following
|
||
trash up to and including the last byte of the existing indent that
|
||
we just found. */
|
||
|
||
output_up_to (ep);
|
||
|
||
/* Now we go ahead and insert the new declaration at this point.
|
||
|
||
If the definition of the given function is in the same file that we
|
||
are currently editing, and if its full ANSI declaration normally
|
||
would start with the keyword `extern', suppress the `extern'. */
|
||
|
||
{
|
||
const char *decl = def_dec_p->definition->ansi_decl;
|
||
|
||
if ((*decl == 'e') && (def_dec_p->file == def_dec_p->definition->file))
|
||
decl += 7;
|
||
output_string (decl);
|
||
}
|
||
|
||
/* Finally, write out a new indent string, just like the preceding one
|
||
that we found. This will typically include a newline as the first
|
||
character of the indent string. */
|
||
|
||
output_bytes (sp, (size_t) (ep - sp) + 1);
|
||
}
|
||
}
|
||
|
||
/* Given a pointer to a file_info record, and a pointer to the beginning
|
||
of a line (in the clean text buffer) which is assumed to contain the
|
||
first "follower" token for the first function definition header in the
|
||
given file, find a good place to insert some new global function
|
||
declarations (which will replace scattered and imprecise implicit ones)
|
||
and then insert the new explicit declaration at that point in the file. */
|
||
|
||
static void
|
||
add_global_decls (const file_info *file_p, const char *clean_text_p)
|
||
{
|
||
const def_dec_info *dd_p;
|
||
const char *scan_p;
|
||
|
||
/* Setup here to recover from confusing source code detected during this
|
||
particular "edit". */
|
||
|
||
save_pointers ();
|
||
if (setjmp (source_confusion_recovery))
|
||
{
|
||
restore_pointers ();
|
||
notice ("%s: global declarations for file '%s' not inserted\n",
|
||
pname, shortpath (NULL, file_p->hash_entry->symbol));
|
||
return;
|
||
}
|
||
|
||
/* Start by finding a good location for adding the new explicit function
|
||
declarations. To do this, we scan backwards, ignoring whitespace
|
||
and comments and other junk until we find either a semicolon, or until
|
||
we hit the beginning of the file. */
|
||
|
||
scan_p = find_rightmost_formals_list (clean_text_p);
|
||
for (;; --scan_p)
|
||
{
|
||
if (scan_p < clean_text_base)
|
||
break;
|
||
check_source (scan_p > clean_read_ptr, 0);
|
||
if (*scan_p == ';')
|
||
break;
|
||
}
|
||
|
||
/* scan_p now points either to a semicolon, or to just before the start
|
||
of the whole file. */
|
||
|
||
/* Now scan forward for the first non-whitespace character. In theory,
|
||
this should be the first character of the following function definition
|
||
header. We will put in the added declarations just prior to that. */
|
||
|
||
scan_p++;
|
||
while (ISSPACE ((const unsigned char)*scan_p))
|
||
scan_p++;
|
||
scan_p--;
|
||
|
||
output_up_to (scan_p);
|
||
|
||
/* Now write out full prototypes for all of the things that had been
|
||
implicitly declared in this file (but only those for which we were
|
||
actually able to find unique matching definitions). Avoid duplicates
|
||
by marking things that we write out as we go. */
|
||
|
||
{
|
||
int some_decls_added = 0;
|
||
|
||
for (dd_p = file_p->defs_decs; dd_p; dd_p = dd_p->next_in_file)
|
||
if (dd_p->is_implicit && dd_p->definition && !dd_p->definition->written)
|
||
{
|
||
const char *decl = dd_p->definition->ansi_decl;
|
||
|
||
/* If the function for which we are inserting a declaration is
|
||
actually defined later in the same file, then suppress the
|
||
leading `extern' keyword (if there is one). */
|
||
|
||
if (*decl == 'e' && (dd_p->file == dd_p->definition->file))
|
||
decl += 7;
|
||
|
||
output_string ("\n");
|
||
output_string (decl);
|
||
some_decls_added = 1;
|
||
((NONCONST def_dec_info *) dd_p->definition)->written = 1;
|
||
}
|
||
if (some_decls_added)
|
||
output_string ("\n\n");
|
||
}
|
||
|
||
/* Unmark all of the definitions that we just marked. */
|
||
|
||
for (dd_p = file_p->defs_decs; dd_p; dd_p = dd_p->next_in_file)
|
||
if (dd_p->definition)
|
||
((NONCONST def_dec_info *) dd_p->definition)->written = 0;
|
||
}
|
||
|
||
#endif /* !defined (UNPROTOIZE) */
|
||
|
||
/* Do the editing operation specifically for a function "definition". Note
|
||
that editing operations for function "declarations" are handled by a
|
||
separate routine above. */
|
||
|
||
static void
|
||
edit_fn_definition (const def_dec_info *def_dec_p,
|
||
const char *volatile clean_text_p)
|
||
{
|
||
const char *end_formals;
|
||
const char *function_to_edit = def_dec_p->hash_entry->symbol;
|
||
|
||
/* Setup here to recover from confusing source code detected during this
|
||
particular "edit". */
|
||
|
||
save_pointers ();
|
||
if (setjmp (source_confusion_recovery))
|
||
{
|
||
restore_pointers ();
|
||
notice ("%s: definition of function '%s' not converted\n",
|
||
pname, function_to_edit);
|
||
return;
|
||
}
|
||
|
||
end_formals = find_rightmost_formals_list (clean_text_p);
|
||
|
||
/* end_of_formals now points to the closing right paren of the rightmost
|
||
formals list which is actually part of the `header' of the function
|
||
definition that we are converting. */
|
||
|
||
/* If the header of this function definition looks like it declares a
|
||
function with a variable number of arguments, and if the way it does
|
||
that is different from that way we would like it (i.e. varargs vs.
|
||
stdarg) then issue a warning and leave the header unconverted. */
|
||
|
||
if (other_variable_style_function (def_dec_p->ansi_decl))
|
||
{
|
||
if (!quiet_flag)
|
||
notice ("%s: %d: warning: definition of %s not converted\n",
|
||
shortpath (NULL, def_dec_p->file->hash_entry->symbol),
|
||
identify_lineno (end_formals),
|
||
other_var_style);
|
||
output_up_to (end_formals);
|
||
return;
|
||
}
|
||
|
||
if (edit_formals_lists (end_formals, def_dec_p->f_list_count, def_dec_p))
|
||
{
|
||
restore_pointers ();
|
||
notice ("%s: definition of function '%s' not converted\n",
|
||
pname, function_to_edit);
|
||
return;
|
||
}
|
||
|
||
/* Have to output the last right paren because this never gets flushed by
|
||
edit_formals_list. */
|
||
|
||
output_up_to (end_formals);
|
||
|
||
#ifdef UNPROTOIZE
|
||
{
|
||
const char *decl_p;
|
||
const char *semicolon_p;
|
||
const char *limit_p;
|
||
const char *scan_p;
|
||
int had_newlines = 0;
|
||
|
||
/* Now write out the K&R style formal declarations, one per line. */
|
||
|
||
decl_p = def_dec_p->formal_decls;
|
||
limit_p = decl_p + strlen (decl_p);
|
||
for (;decl_p < limit_p; decl_p = semicolon_p + 2)
|
||
{
|
||
for (semicolon_p = decl_p; *semicolon_p != ';'; semicolon_p++)
|
||
continue;
|
||
output_string ("\n");
|
||
output_string (indent_string);
|
||
output_bytes (decl_p, (size_t) ((semicolon_p + 1) - decl_p));
|
||
}
|
||
|
||
/* If there are no newlines between the end of the formals list and the
|
||
start of the body, we should insert one now. */
|
||
|
||
for (scan_p = end_formals+1; *scan_p != '{'; )
|
||
{
|
||
if (*scan_p == '\n')
|
||
{
|
||
had_newlines = 1;
|
||
break;
|
||
}
|
||
check_source (++scan_p < clean_text_limit, 0);
|
||
}
|
||
if (!had_newlines)
|
||
output_string ("\n");
|
||
}
|
||
#else /* !defined (UNPROTOIZE) */
|
||
/* If we are protoizing, there may be some flotsam & jetsam (like comments
|
||
and preprocessing directives) after the old formals list but before
|
||
the following { and we would like to preserve that stuff while effectively
|
||
deleting the existing K&R formal parameter declarations. We do so here
|
||
in a rather tricky way. Basically, we white out any stuff *except*
|
||
the comments/pp-directives in the original text buffer, then, if there
|
||
is anything in this area *other* than whitespace, we output it. */
|
||
{
|
||
const char *end_formals_orig;
|
||
const char *start_body;
|
||
const char *start_body_orig;
|
||
const char *scan;
|
||
const char *scan_orig;
|
||
int have_flotsam = 0;
|
||
int have_newlines = 0;
|
||
|
||
for (start_body = end_formals + 1; *start_body != '{';)
|
||
check_source (++start_body < clean_text_limit, 0);
|
||
|
||
end_formals_orig = orig_text_base + (end_formals - clean_text_base);
|
||
start_body_orig = orig_text_base + (start_body - clean_text_base);
|
||
scan = end_formals + 1;
|
||
scan_orig = end_formals_orig + 1;
|
||
for (; scan < start_body; scan++, scan_orig++)
|
||
{
|
||
if (*scan == *scan_orig)
|
||
{
|
||
have_newlines |= (*scan_orig == '\n');
|
||
/* Leave identical whitespace alone. */
|
||
if (!ISSPACE ((const unsigned char)*scan_orig))
|
||
*((NONCONST char *) scan_orig) = ' '; /* identical - so whiteout */
|
||
}
|
||
else
|
||
have_flotsam = 1;
|
||
}
|
||
if (have_flotsam)
|
||
output_bytes (end_formals_orig + 1,
|
||
(size_t) (start_body_orig - end_formals_orig) - 1);
|
||
else
|
||
if (have_newlines)
|
||
output_string ("\n");
|
||
else
|
||
output_string (" ");
|
||
clean_read_ptr = start_body - 1;
|
||
}
|
||
#endif /* !defined (UNPROTOIZE) */
|
||
}
|
||
|
||
/* Clean up the clean text buffer. Do this by converting comments and
|
||
preprocessing directives into spaces. Also convert line continuations
|
||
into whitespace. Also, whiteout string and character literals. */
|
||
|
||
static void
|
||
do_cleaning (char *new_clean_text_base, const char *new_clean_text_limit)
|
||
{
|
||
char *scan_p;
|
||
int non_whitespace_since_newline = 0;
|
||
|
||
for (scan_p = new_clean_text_base; scan_p < new_clean_text_limit; scan_p++)
|
||
{
|
||
switch (*scan_p)
|
||
{
|
||
case '/': /* Handle comments. */
|
||
if (scan_p[1] != '*')
|
||
goto regular;
|
||
non_whitespace_since_newline = 1;
|
||
scan_p[0] = ' ';
|
||
scan_p[1] = ' ';
|
||
scan_p += 2;
|
||
while (scan_p[1] != '/' || scan_p[0] != '*')
|
||
{
|
||
if (!ISSPACE ((const unsigned char)*scan_p))
|
||
*scan_p = ' ';
|
||
++scan_p;
|
||
gcc_assert (scan_p < new_clean_text_limit);
|
||
}
|
||
*scan_p++ = ' ';
|
||
*scan_p = ' ';
|
||
break;
|
||
|
||
case '#': /* Handle pp directives. */
|
||
if (non_whitespace_since_newline)
|
||
goto regular;
|
||
*scan_p = ' ';
|
||
while (scan_p[1] != '\n' || scan_p[0] == '\\')
|
||
{
|
||
if (!ISSPACE ((const unsigned char)*scan_p))
|
||
*scan_p = ' ';
|
||
++scan_p;
|
||
gcc_assert (scan_p < new_clean_text_limit);
|
||
}
|
||
*scan_p++ = ' ';
|
||
break;
|
||
|
||
case '\'': /* Handle character literals. */
|
||
non_whitespace_since_newline = 1;
|
||
while (scan_p[1] != '\'' || scan_p[0] == '\\')
|
||
{
|
||
if (scan_p[0] == '\\'
|
||
&& !ISSPACE ((const unsigned char) scan_p[1]))
|
||
scan_p[1] = ' ';
|
||
if (!ISSPACE ((const unsigned char)*scan_p))
|
||
*scan_p = ' ';
|
||
++scan_p;
|
||
gcc_assert (scan_p < new_clean_text_limit);
|
||
}
|
||
*scan_p++ = ' ';
|
||
break;
|
||
|
||
case '"': /* Handle string literals. */
|
||
non_whitespace_since_newline = 1;
|
||
while (scan_p[1] != '"' || scan_p[0] == '\\')
|
||
{
|
||
if (scan_p[0] == '\\'
|
||
&& !ISSPACE ((const unsigned char) scan_p[1]))
|
||
scan_p[1] = ' ';
|
||
if (!ISSPACE ((const unsigned char)*scan_p))
|
||
*scan_p = ' ';
|
||
++scan_p;
|
||
gcc_assert (scan_p < new_clean_text_limit);
|
||
}
|
||
if (!ISSPACE ((const unsigned char)*scan_p))
|
||
*scan_p = ' ';
|
||
scan_p++;
|
||
break;
|
||
|
||
case '\\': /* Handle line continuations. */
|
||
if (scan_p[1] != '\n')
|
||
goto regular;
|
||
*scan_p = ' ';
|
||
break;
|
||
|
||
case '\n':
|
||
non_whitespace_since_newline = 0; /* Reset. */
|
||
break;
|
||
|
||
case ' ':
|
||
case '\v':
|
||
case '\t':
|
||
case '\r':
|
||
case '\f':
|
||
case '\b':
|
||
break; /* Whitespace characters. */
|
||
|
||
default:
|
||
regular:
|
||
non_whitespace_since_newline = 1;
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Given a pointer to the closing right parenthesis for a particular formals
|
||
list (in the clean text buffer) find the corresponding left parenthesis
|
||
and return a pointer to it. */
|
||
|
||
static const char *
|
||
careful_find_l_paren (const char *p)
|
||
{
|
||
const char *q;
|
||
int paren_depth;
|
||
|
||
for (paren_depth = 1, q = p-1; paren_depth; check_source (--q >= clean_text_base, 0))
|
||
{
|
||
switch (*q)
|
||
{
|
||
case ')':
|
||
paren_depth++;
|
||
break;
|
||
case '(':
|
||
paren_depth--;
|
||
break;
|
||
}
|
||
}
|
||
return ++q;
|
||
}
|
||
|
||
/* Scan the clean text buffer for cases of function definitions that we
|
||
don't really know about because they were preprocessed out when the
|
||
aux info files were created.
|
||
|
||
In this version of protoize/unprotoize we just give a warning for each
|
||
one found. A later version may be able to at least unprotoize such
|
||
missed items.
|
||
|
||
Note that we may easily find all function definitions simply by
|
||
looking for places where there is a left paren which is (ignoring
|
||
whitespace) immediately followed by either a left-brace or by an
|
||
upper or lower case letter. Whenever we find this combination, we
|
||
have also found a function definition header.
|
||
|
||
Finding function *declarations* using syntactic clues is much harder.
|
||
I will probably try to do this in a later version though. */
|
||
|
||
static void
|
||
scan_for_missed_items (const file_info *file_p)
|
||
{
|
||
static const char *scan_p;
|
||
const char *limit = clean_text_limit - 3;
|
||
static const char *backup_limit;
|
||
|
||
backup_limit = clean_text_base - 1;
|
||
|
||
for (scan_p = clean_text_base; scan_p < limit; scan_p++)
|
||
{
|
||
if (*scan_p == ')')
|
||
{
|
||
static const char *last_r_paren;
|
||
const char *ahead_p;
|
||
|
||
last_r_paren = scan_p;
|
||
|
||
for (ahead_p = scan_p + 1; ISSPACE ((const unsigned char)*ahead_p); )
|
||
check_source (++ahead_p < limit, limit);
|
||
|
||
scan_p = ahead_p - 1;
|
||
|
||
if (ISALPHA ((const unsigned char)*ahead_p) || *ahead_p == '{')
|
||
{
|
||
const char *last_l_paren;
|
||
const int lineno = identify_lineno (ahead_p);
|
||
|
||
if (setjmp (source_confusion_recovery))
|
||
continue;
|
||
|
||
/* We know we have a function definition header. Now skip
|
||
leftwards over all of its associated formals lists. */
|
||
|
||
do
|
||
{
|
||
last_l_paren = careful_find_l_paren (last_r_paren);
|
||
for (last_r_paren = last_l_paren-1;
|
||
ISSPACE ((const unsigned char)*last_r_paren); )
|
||
check_source (--last_r_paren >= backup_limit, backup_limit);
|
||
}
|
||
while (*last_r_paren == ')');
|
||
|
||
if (is_id_char (*last_r_paren))
|
||
{
|
||
const char *id_limit = last_r_paren + 1;
|
||
const char *id_start;
|
||
size_t id_length;
|
||
const def_dec_info *dd_p;
|
||
|
||
for (id_start = id_limit-1; is_id_char (*id_start); )
|
||
check_source (--id_start >= backup_limit, backup_limit);
|
||
id_start++;
|
||
backup_limit = id_start;
|
||
if ((id_length = (size_t) (id_limit - id_start)) == 0)
|
||
goto not_missed;
|
||
|
||
{
|
||
char *func_name = alloca (id_length + 1);
|
||
static const char * const stmt_keywords[]
|
||
= { "if", "else", "do", "while", "for", "switch", "case", "return", 0 };
|
||
const char * const *stmt_keyword;
|
||
|
||
strncpy (func_name, id_start, id_length);
|
||
func_name[id_length] = '\0';
|
||
|
||
/* We must check here to see if we are actually looking at
|
||
a statement rather than an actual function call. */
|
||
|
||
for (stmt_keyword = stmt_keywords; *stmt_keyword; stmt_keyword++)
|
||
if (!strcmp (func_name, *stmt_keyword))
|
||
goto not_missed;
|
||
|
||
#if 0
|
||
notice ("%s: found definition of '%s' at %s(%d)\n",
|
||
pname,
|
||
func_name,
|
||
shortpath (NULL, file_p->hash_entry->symbol),
|
||
identify_lineno (id_start));
|
||
#endif /* 0 */
|
||
/* We really should check for a match of the function name
|
||
here also, but why bother. */
|
||
|
||
for (dd_p = file_p->defs_decs; dd_p; dd_p = dd_p->next_in_file)
|
||
if (dd_p->is_func_def && dd_p->line == lineno)
|
||
goto not_missed;
|
||
|
||
/* If we make it here, then we did not know about this
|
||
function definition. */
|
||
|
||
notice ("%s: %d: warning: '%s' excluded by preprocessing\n",
|
||
shortpath (NULL, file_p->hash_entry->symbol),
|
||
identify_lineno (id_start), func_name);
|
||
notice ("%s: function definition not converted\n",
|
||
pname);
|
||
}
|
||
not_missed: ;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Do all editing operations for a single source file (either a "base" file
|
||
or an "include" file). To do this we read the file into memory, keep a
|
||
virgin copy there, make another cleaned in-core copy of the original file
|
||
(i.e. one in which all of the comments and preprocessing directives have
|
||
been replaced with whitespace), then use these two in-core copies of the
|
||
file to make a new edited in-core copy of the file. Finally, rename the
|
||
original file (as a way of saving it), and then write the edited version
|
||
of the file from core to a disk file of the same name as the original.
|
||
|
||
Note that the trick of making a copy of the original sans comments &
|
||
preprocessing directives make the editing a whole lot easier. */
|
||
|
||
static void
|
||
edit_file (const hash_table_entry *hp)
|
||
{
|
||
struct stat stat_buf;
|
||
const file_info *file_p = hp->fip;
|
||
char *new_orig_text_base;
|
||
char *new_orig_text_limit;
|
||
char *new_clean_text_base;
|
||
char *new_clean_text_limit;
|
||
size_t orig_size;
|
||
size_t repl_size;
|
||
int first_definition_in_file;
|
||
|
||
/* If we are not supposed to be converting this file, or if there is
|
||
nothing in there which needs converting, just skip this file. */
|
||
|
||
if (!needs_to_be_converted (file_p))
|
||
return;
|
||
|
||
convert_filename = file_p->hash_entry->symbol;
|
||
|
||
/* Convert a file if it is in a directory where we want conversion
|
||
and the file is not excluded. */
|
||
|
||
if (!directory_specified_p (convert_filename)
|
||
|| file_excluded_p (convert_filename))
|
||
{
|
||
if (!quiet_flag
|
||
#ifdef UNPROTOIZE
|
||
/* Don't even mention "system" include files unless we are
|
||
protoizing. If we are protoizing, we mention these as a
|
||
gentle way of prodding the user to convert his "system"
|
||
include files to prototype format. */
|
||
&& !in_system_include_dir (convert_filename)
|
||
#endif /* defined (UNPROTOIZE) */
|
||
)
|
||
notice ("%s: '%s' not converted\n",
|
||
pname, shortpath (NULL, convert_filename));
|
||
return;
|
||
}
|
||
|
||
/* Let the user know what we are up to. */
|
||
|
||
if (nochange_flag)
|
||
notice ("%s: would convert file '%s'\n",
|
||
pname, shortpath (NULL, convert_filename));
|
||
else
|
||
notice ("%s: converting file '%s'\n",
|
||
pname, shortpath (NULL, convert_filename));
|
||
fflush (stderr);
|
||
|
||
/* Find out the size (in bytes) of the original file. */
|
||
|
||
/* The cast avoids an erroneous warning on AIX. */
|
||
if (stat (convert_filename, &stat_buf) == -1)
|
||
{
|
||
int errno_val = errno;
|
||
notice ("%s: can't get status for file '%s': %s\n",
|
||
pname, shortpath (NULL, convert_filename),
|
||
xstrerror (errno_val));
|
||
return;
|
||
}
|
||
orig_size = stat_buf.st_size;
|
||
|
||
/* Allocate a buffer to hold the original text. */
|
||
|
||
orig_text_base = new_orig_text_base = xmalloc (orig_size + 2);
|
||
orig_text_limit = new_orig_text_limit = new_orig_text_base + orig_size;
|
||
|
||
/* Allocate a buffer to hold the cleaned-up version of the original text. */
|
||
|
||
clean_text_base = new_clean_text_base = xmalloc (orig_size + 2);
|
||
clean_text_limit = new_clean_text_limit = new_clean_text_base + orig_size;
|
||
clean_read_ptr = clean_text_base - 1;
|
||
|
||
/* Allocate a buffer that will hopefully be large enough to hold the entire
|
||
converted output text. As an initial guess for the maximum size of the
|
||
output buffer, use 125% of the size of the original + some extra. This
|
||
buffer can be expanded later as needed. */
|
||
|
||
repl_size = orig_size + (orig_size >> 2) + 4096;
|
||
repl_text_base = xmalloc (repl_size + 2);
|
||
repl_text_limit = repl_text_base + repl_size - 1;
|
||
repl_write_ptr = repl_text_base - 1;
|
||
|
||
{
|
||
int input_file;
|
||
int fd_flags;
|
||
|
||
/* Open the file to be converted in READ ONLY mode. */
|
||
|
||
fd_flags = O_RDONLY;
|
||
#ifdef O_BINARY
|
||
/* Use binary mode to avoid having to deal with different EOL characters. */
|
||
fd_flags |= O_BINARY;
|
||
#endif
|
||
if ((input_file = open (convert_filename, fd_flags, 0444)) == -1)
|
||
{
|
||
int errno_val = errno;
|
||
notice ("%s: can't open file '%s' for reading: %s\n",
|
||
pname, shortpath (NULL, convert_filename),
|
||
xstrerror (errno_val));
|
||
return;
|
||
}
|
||
|
||
/* Read the entire original source text file into the original text buffer
|
||
in one swell fwoop. Then figure out where the end of the text is and
|
||
make sure that it ends with a newline followed by a null. */
|
||
|
||
if (safe_read (input_file, new_orig_text_base, orig_size) !=
|
||
(int) orig_size)
|
||
{
|
||
int errno_val = errno;
|
||
close (input_file);
|
||
notice ("\n%s: error reading input file '%s': %s\n",
|
||
pname, shortpath (NULL, convert_filename),
|
||
xstrerror (errno_val));
|
||
return;
|
||
}
|
||
|
||
close (input_file);
|
||
}
|
||
|
||
if (orig_size == 0 || orig_text_limit[-1] != '\n')
|
||
{
|
||
*new_orig_text_limit++ = '\n';
|
||
orig_text_limit++;
|
||
}
|
||
|
||
/* Create the cleaned up copy of the original text. */
|
||
|
||
memcpy (new_clean_text_base, orig_text_base,
|
||
(size_t) (orig_text_limit - orig_text_base));
|
||
do_cleaning (new_clean_text_base, new_clean_text_limit);
|
||
|
||
#if 0
|
||
{
|
||
int clean_file;
|
||
size_t clean_size = orig_text_limit - orig_text_base;
|
||
char *const clean_filename = alloca (strlen (convert_filename) + 6 + 1);
|
||
|
||
/* Open (and create) the clean file. */
|
||
|
||
strcpy (clean_filename, convert_filename);
|
||
strcat (clean_filename, ".clean");
|
||
if ((clean_file = creat (clean_filename, 0666)) == -1)
|
||
{
|
||
int errno_val = errno;
|
||
notice ("%s: can't create/open clean file '%s': %s\n",
|
||
pname, shortpath (NULL, clean_filename),
|
||
xstrerror (errno_val));
|
||
return;
|
||
}
|
||
|
||
/* Write the clean file. */
|
||
|
||
safe_write (clean_file, new_clean_text_base, clean_size, clean_filename);
|
||
|
||
close (clean_file);
|
||
}
|
||
#endif /* 0 */
|
||
|
||
/* Do a simplified scan of the input looking for things that were not
|
||
mentioned in the aux info files because of the fact that they were
|
||
in a region of the source which was preprocessed-out (via #if or
|
||
via #ifdef). */
|
||
|
||
scan_for_missed_items (file_p);
|
||
|
||
/* Setup to do line-oriented forward seeking in the clean text buffer. */
|
||
|
||
last_known_line_number = 1;
|
||
last_known_line_start = clean_text_base;
|
||
|
||
/* Now get down to business and make all of the necessary edits. */
|
||
|
||
{
|
||
const def_dec_info *def_dec_p;
|
||
|
||
first_definition_in_file = 1;
|
||
def_dec_p = file_p->defs_decs;
|
||
for (; def_dec_p; def_dec_p = def_dec_p->next_in_file)
|
||
{
|
||
const char *clean_text_p = seek_to_line (def_dec_p->line);
|
||
|
||
/* clean_text_p now points to the first character of the line which
|
||
contains the `terminator' for the declaration or definition that
|
||
we are about to process. */
|
||
|
||
#ifndef UNPROTOIZE
|
||
|
||
if (global_flag && def_dec_p->is_func_def && first_definition_in_file)
|
||
{
|
||
add_global_decls (def_dec_p->file, clean_text_p);
|
||
first_definition_in_file = 0;
|
||
}
|
||
|
||
/* Don't edit this item if it is already in prototype format or if it
|
||
is a function declaration and we have found no corresponding
|
||
definition. */
|
||
|
||
if (def_dec_p->prototyped
|
||
|| (!def_dec_p->is_func_def && !def_dec_p->definition))
|
||
continue;
|
||
|
||
#endif /* !defined (UNPROTOIZE) */
|
||
|
||
if (def_dec_p->is_func_def)
|
||
edit_fn_definition (def_dec_p, clean_text_p);
|
||
else
|
||
#ifndef UNPROTOIZE
|
||
if (def_dec_p->is_implicit)
|
||
add_local_decl (def_dec_p, clean_text_p);
|
||
else
|
||
#endif /* !defined (UNPROTOIZE) */
|
||
edit_fn_declaration (def_dec_p, clean_text_p);
|
||
}
|
||
}
|
||
|
||
/* Finalize things. Output the last trailing part of the original text. */
|
||
|
||
output_up_to (clean_text_limit - 1);
|
||
|
||
/* If this is just a test run, stop now and just deallocate the buffers. */
|
||
|
||
if (nochange_flag)
|
||
{
|
||
free (new_orig_text_base);
|
||
free (new_clean_text_base);
|
||
free (repl_text_base);
|
||
return;
|
||
}
|
||
|
||
/* Change the name of the original input file. This is just a quick way of
|
||
saving the original file. */
|
||
|
||
if (!nosave_flag)
|
||
{
|
||
char *new_filename
|
||
= xmalloc (strlen (convert_filename) + strlen (save_suffix) + 2);
|
||
|
||
strcpy (new_filename, convert_filename);
|
||
#ifdef __MSDOS__
|
||
/* MSDOS filenames are restricted to 8.3 format, so we save `foo.c'
|
||
as `foo.<save_suffix>'. */
|
||
new_filename[(strlen (convert_filename) - 1] = '\0';
|
||
#endif
|
||
strcat (new_filename, save_suffix);
|
||
|
||
/* Don't overwrite existing file. */
|
||
if (access (new_filename, F_OK) == 0)
|
||
{
|
||
if (!quiet_flag)
|
||
notice ("%s: warning: file '%s' already saved in '%s'\n",
|
||
pname,
|
||
shortpath (NULL, convert_filename),
|
||
shortpath (NULL, new_filename));
|
||
}
|
||
else if (rename (convert_filename, new_filename) == -1)
|
||
{
|
||
int errno_val = errno;
|
||
notice ("%s: can't link file '%s' to '%s': %s\n",
|
||
pname,
|
||
shortpath (NULL, convert_filename),
|
||
shortpath (NULL, new_filename),
|
||
xstrerror (errno_val));
|
||
return;
|
||
}
|
||
}
|
||
|
||
if (unlink (convert_filename) == -1)
|
||
{
|
||
int errno_val = errno;
|
||
/* The file may have already been renamed. */
|
||
if (errno_val != ENOENT)
|
||
{
|
||
notice ("%s: can't delete file '%s': %s\n",
|
||
pname, shortpath (NULL, convert_filename),
|
||
xstrerror (errno_val));
|
||
return;
|
||
}
|
||
}
|
||
|
||
{
|
||
int output_file;
|
||
|
||
/* Open (and create) the output file. */
|
||
|
||
if ((output_file = creat (convert_filename, 0666)) == -1)
|
||
{
|
||
int errno_val = errno;
|
||
notice ("%s: can't create/open output file '%s': %s\n",
|
||
pname, shortpath (NULL, convert_filename),
|
||
xstrerror (errno_val));
|
||
return;
|
||
}
|
||
#ifdef O_BINARY
|
||
/* Use binary mode to avoid changing the existing EOL character. */
|
||
setmode (output_file, O_BINARY);
|
||
#endif
|
||
|
||
/* Write the output file. */
|
||
|
||
{
|
||
unsigned int out_size = (repl_write_ptr + 1) - repl_text_base;
|
||
|
||
safe_write (output_file, repl_text_base, out_size, convert_filename);
|
||
}
|
||
|
||
close (output_file);
|
||
}
|
||
|
||
/* Deallocate the conversion buffers. */
|
||
|
||
free (new_orig_text_base);
|
||
free (new_clean_text_base);
|
||
free (repl_text_base);
|
||
|
||
/* Change the mode of the output file to match the original file. */
|
||
|
||
/* The cast avoids an erroneous warning on AIX. */
|
||
if (chmod (convert_filename, stat_buf.st_mode) == -1)
|
||
{
|
||
int errno_val = errno;
|
||
notice ("%s: can't change mode of file '%s': %s\n",
|
||
pname, shortpath (NULL, convert_filename),
|
||
xstrerror (errno_val));
|
||
}
|
||
|
||
/* Note: We would try to change the owner and group of the output file
|
||
to match those of the input file here, except that may not be a good
|
||
thing to do because it might be misleading. Also, it might not even
|
||
be possible to do that (on BSD systems with quotas for instance). */
|
||
}
|
||
|
||
/* Do all of the individual steps needed to do the protoization (or
|
||
unprotoization) of the files referenced in the aux_info files given
|
||
in the command line. */
|
||
|
||
static void
|
||
do_processing (void)
|
||
{
|
||
const char * const *base_pp;
|
||
const char * const * const end_pps
|
||
= &base_source_filenames[n_base_source_files];
|
||
|
||
#ifndef UNPROTOIZE
|
||
int syscalls_len;
|
||
#endif /* !defined (UNPROTOIZE) */
|
||
|
||
/* One-by-one, check (and create if necessary), open, and read all of the
|
||
stuff in each aux_info file. After reading each aux_info file, the
|
||
aux_info_file just read will be automatically deleted unless the
|
||
keep_flag is set. */
|
||
|
||
for (base_pp = base_source_filenames; base_pp < end_pps; base_pp++)
|
||
process_aux_info_file (*base_pp, keep_flag, 0);
|
||
|
||
#ifndef UNPROTOIZE
|
||
|
||
/* Also open and read the special SYSCALLS.c aux_info file which gives us
|
||
the prototypes for all of the standard system-supplied functions. */
|
||
|
||
if (nondefault_syscalls_dir)
|
||
{
|
||
syscalls_absolute_filename
|
||
= xmalloc (strlen (nondefault_syscalls_dir) + 1
|
||
+ sizeof (syscalls_filename));
|
||
strcpy (syscalls_absolute_filename, nondefault_syscalls_dir);
|
||
}
|
||
else
|
||
{
|
||
GET_ENVIRONMENT (default_syscalls_dir, "GCC_EXEC_PREFIX");
|
||
if (!default_syscalls_dir)
|
||
{
|
||
default_syscalls_dir = standard_exec_prefix;
|
||
}
|
||
syscalls_absolute_filename
|
||
= xmalloc (strlen (default_syscalls_dir) + 0
|
||
+ strlen (target_machine) + 1
|
||
+ strlen (target_version) + 1
|
||
+ sizeof (syscalls_filename));
|
||
strcpy (syscalls_absolute_filename, default_syscalls_dir);
|
||
strcat (syscalls_absolute_filename, target_machine);
|
||
strcat (syscalls_absolute_filename, "/");
|
||
strcat (syscalls_absolute_filename, target_version);
|
||
strcat (syscalls_absolute_filename, "/");
|
||
}
|
||
|
||
syscalls_len = strlen (syscalls_absolute_filename);
|
||
if (! IS_DIR_SEPARATOR (*(syscalls_absolute_filename + syscalls_len - 1)))
|
||
{
|
||
*(syscalls_absolute_filename + syscalls_len++) = DIR_SEPARATOR;
|
||
*(syscalls_absolute_filename + syscalls_len) = '\0';
|
||
}
|
||
strcat (syscalls_absolute_filename, syscalls_filename);
|
||
|
||
/* Call process_aux_info_file in such a way that it does not try to
|
||
delete the SYSCALLS aux_info file. */
|
||
|
||
process_aux_info_file (syscalls_absolute_filename, 1, 1);
|
||
|
||
#endif /* !defined (UNPROTOIZE) */
|
||
|
||
/* When we first read in all of the information from the aux_info files
|
||
we saved in it descending line number order, because that was likely to
|
||
be faster. Now however, we want the chains of def & dec records to
|
||
appear in ascending line number order as we get further away from the
|
||
file_info record that they hang from. The following line causes all of
|
||
these lists to be rearranged into ascending line number order. */
|
||
|
||
visit_each_hash_node (filename_primary, reverse_def_dec_list);
|
||
|
||
#ifndef UNPROTOIZE
|
||
|
||
/* Now do the "real" work. The following line causes each declaration record
|
||
to be "visited". For each of these nodes, an attempt is made to match
|
||
up the function declaration with a corresponding function definition,
|
||
which should have a full prototype-format formals list with it. Once
|
||
these match-ups are made, the conversion of the function declarations
|
||
to prototype format can be made. */
|
||
|
||
visit_each_hash_node (function_name_primary, connect_defs_and_decs);
|
||
|
||
#endif /* !defined (UNPROTOIZE) */
|
||
|
||
/* Now convert each file that can be converted (and needs to be). */
|
||
|
||
visit_each_hash_node (filename_primary, edit_file);
|
||
|
||
#ifndef UNPROTOIZE
|
||
|
||
/* If we are working in cplusplus mode, try to rename all .c files to .C
|
||
files. Don't panic if some of the renames don't work. */
|
||
|
||
if (cplusplus_flag && !nochange_flag)
|
||
visit_each_hash_node (filename_primary, rename_c_file);
|
||
|
||
#endif /* !defined (UNPROTOIZE) */
|
||
}
|
||
|
||
static const struct option longopts[] =
|
||
{
|
||
{"version", 0, 0, 'V'},
|
||
{"file_name", 0, 0, 'p'},
|
||
{"quiet", 0, 0, 'q'},
|
||
{"silent", 0, 0, 'q'},
|
||
{"force", 0, 0, 'f'},
|
||
{"keep", 0, 0, 'k'},
|
||
{"nosave", 0, 0, 'N'},
|
||
{"nochange", 0, 0, 'n'},
|
||
{"compiler-options", 1, 0, 'c'},
|
||
{"exclude", 1, 0, 'x'},
|
||
{"directory", 1, 0, 'd'},
|
||
#ifdef UNPROTOIZE
|
||
{"indent", 1, 0, 'i'},
|
||
#else
|
||
{"local", 0, 0, 'l'},
|
||
{"global", 0, 0, 'g'},
|
||
{"c++", 0, 0, 'C'},
|
||
{"syscalls-dir", 1, 0, 'B'},
|
||
#endif
|
||
{0, 0, 0, 0}
|
||
};
|
||
|
||
extern int main (int, char **const);
|
||
|
||
int
|
||
main (int argc, char **const argv)
|
||
{
|
||
int longind;
|
||
int c;
|
||
const char *params = "";
|
||
|
||
pname = strrchr (argv[0], DIR_SEPARATOR);
|
||
#ifdef DIR_SEPARATOR_2
|
||
{
|
||
char *slash;
|
||
|
||
slash = strrchr (pname ? pname : argv[0], DIR_SEPARATOR_2);
|
||
if (slash)
|
||
pname = slash;
|
||
}
|
||
#endif
|
||
pname = pname ? pname+1 : argv[0];
|
||
|
||
#ifdef SIGCHLD
|
||
/* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
|
||
receive the signal. A different setting is inheritable */
|
||
signal (SIGCHLD, SIG_DFL);
|
||
#endif
|
||
|
||
/* Unlock the stdio streams. */
|
||
unlock_std_streams ();
|
||
|
||
gcc_init_libintl ();
|
||
|
||
cwd_buffer = getpwd ();
|
||
if (!cwd_buffer)
|
||
{
|
||
notice ("%s: cannot get working directory: %s\n",
|
||
pname, xstrerror(errno));
|
||
return (FATAL_EXIT_CODE);
|
||
}
|
||
|
||
/* By default, convert the files in the current directory. */
|
||
directory_list = string_list_cons (cwd_buffer, NULL);
|
||
|
||
while ((c = getopt_long (argc, argv,
|
||
#ifdef UNPROTOIZE
|
||
"c:d:i:knNp:qvVx:",
|
||
#else
|
||
"B:c:Cd:gklnNp:qvVx:",
|
||
#endif
|
||
longopts, &longind)) != EOF)
|
||
{
|
||
if (c == 0) /* Long option. */
|
||
c = longopts[longind].val;
|
||
switch (c)
|
||
{
|
||
case 'p':
|
||
compiler_file_name = optarg;
|
||
break;
|
||
case 'd':
|
||
directory_list
|
||
= string_list_cons (abspath (NULL, optarg), directory_list);
|
||
break;
|
||
case 'x':
|
||
exclude_list = string_list_cons (optarg, exclude_list);
|
||
break;
|
||
|
||
case 'v':
|
||
case 'V':
|
||
version_flag = 1;
|
||
break;
|
||
case 'q':
|
||
quiet_flag = 1;
|
||
break;
|
||
#if 0
|
||
case 'f':
|
||
force_flag = 1;
|
||
break;
|
||
#endif
|
||
case 'n':
|
||
nochange_flag = 1;
|
||
keep_flag = 1;
|
||
break;
|
||
case 'N':
|
||
nosave_flag = 1;
|
||
break;
|
||
case 'k':
|
||
keep_flag = 1;
|
||
break;
|
||
case 'c':
|
||
params = optarg;
|
||
break;
|
||
#ifdef UNPROTOIZE
|
||
case 'i':
|
||
indent_string = optarg;
|
||
break;
|
||
#else /* !defined (UNPROTOIZE) */
|
||
case 'l':
|
||
local_flag = 1;
|
||
break;
|
||
case 'g':
|
||
global_flag = 1;
|
||
break;
|
||
case 'C':
|
||
cplusplus_flag = 1;
|
||
break;
|
||
case 'B':
|
||
nondefault_syscalls_dir = optarg;
|
||
break;
|
||
#endif /* !defined (UNPROTOIZE) */
|
||
default:
|
||
usage ();
|
||
}
|
||
}
|
||
|
||
/* Set up compile_params based on -p and -c options. */
|
||
munge_compile_params (params);
|
||
|
||
n_base_source_files = argc - optind;
|
||
|
||
/* Now actually make a list of the base source filenames. */
|
||
|
||
base_source_filenames
|
||
= xmalloc ((n_base_source_files + 1) * sizeof (char *));
|
||
n_base_source_files = 0;
|
||
for (; optind < argc; optind++)
|
||
{
|
||
const char *path = abspath (NULL, argv[optind]);
|
||
int len = strlen (path);
|
||
|
||
if (path[len-1] == 'c' && path[len-2] == '.')
|
||
base_source_filenames[n_base_source_files++] = path;
|
||
else
|
||
{
|
||
notice ("%s: input file names must have .c suffixes: %s\n",
|
||
pname, shortpath (NULL, path));
|
||
errors++;
|
||
}
|
||
}
|
||
|
||
#ifndef UNPROTOIZE
|
||
/* We are only interested in the very first identifier token in the
|
||
definition of `va_list', so if there is more junk after that first
|
||
identifier token, delete it from the `varargs_style_indicator'. */
|
||
{
|
||
const char *cp;
|
||
|
||
for (cp = varargs_style_indicator; ISIDNUM (*cp); cp++)
|
||
continue;
|
||
if (*cp != 0)
|
||
varargs_style_indicator = savestring (varargs_style_indicator,
|
||
cp - varargs_style_indicator);
|
||
}
|
||
#endif /* !defined (UNPROTOIZE) */
|
||
|
||
if (errors)
|
||
usage ();
|
||
else
|
||
{
|
||
if (version_flag)
|
||
fprintf (stderr, "%s: %s\n", pname, version_string);
|
||
do_processing ();
|
||
}
|
||
|
||
return (errors ? FATAL_EXIT_CODE : SUCCESS_EXIT_CODE);
|
||
}
|