diff options
Diffstat (limited to 'gcc-4.2.1-5666.3/gcc/fix-header.c')
| -rw-r--r-- | gcc-4.2.1-5666.3/gcc/fix-header.c | 1311 |
1 files changed, 0 insertions, 1311 deletions
diff --git a/gcc-4.2.1-5666.3/gcc/fix-header.c b/gcc-4.2.1-5666.3/gcc/fix-header.c deleted file mode 100644 index 82244d058..000000000 --- a/gcc-4.2.1-5666.3/gcc/fix-header.c +++ /dev/null @@ -1,1311 +0,0 @@ -/* fix-header.c - Make C header file suitable for C++. - Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, - 1999, 2000, 2001, 2002, 2003, 2004, 2006 Free Software Foundation, Inc. - -This program is free software; you can redistribute it and/or modify it -under the terms of the GNU General Public License as published by the -Free Software Foundation; either version 2, or (at your option) any -later version. - -This program is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - -You should have received a copy of the GNU General Public License -along with this program; if not, write to the Free Software -Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ - -/* This program massages a system include file (such as stdio.h), - into a form that is compatible with GNU C and GNU C++. - - * extern "C" { ... } braces are added (inside #ifndef __cplusplus), - if they seem to be needed. These prevent C++ compilers from name - mangling the functions inside the braces. - - * If an old-style incomplete function declaration is seen (without - an argument list), and it is a "standard" function listed in - the file sys-protos.h (and with a non-empty argument list), then - the declaration is converted to a complete prototype by replacing - the empty parameter list with the argument list from sys-protos.h. - - * The program can be given a list of (names of) required standard - functions (such as fclose for stdio.h). If a required function - is not seen in the input, then a prototype for it will be - written to the output. - - * If all of the non-comment code of the original file is protected - against multiple inclusion: - #ifndef FOO - #define FOO - <body of include file> - #endif - then extra matter added to the include file is placed inside the <body>. - - * If the input file is OK (nothing needs to be done); - the output file is not written (nor removed if it exists). - - There are also some special actions that are done for certain - well-known standard include files: - - * If argv[1] is "sys/stat.h", the Posix.1 macros - S_ISBLK, S_ISCHR, S_ISDIR, S_ISFIFO, S_ISLNK, S_ISREG are added if - they were missing, and the corresponding "traditional" S_IFxxx - macros were defined. - - * If argv[1] is "errno.h", errno is declared if it was missing. - - * TODO: The input file should be read complete into memory, because: - a) it needs to be scanned twice anyway, and - b) it would be nice to allow update in place. - - Usage: - fix-header FOO.H INFILE.H OUTFILE.H [OPTIONS] - where: - * FOO.H is the relative file name of the include file, - as it would be #include'd by a C file. (E.g. stdio.h) - * INFILE.H is a full pathname for the input file (e.g. /usr/include/stdio.h) - * OUTFILE.H is the full pathname for where to write the output file, - if anything needs to be done. (e.g. ./include/stdio.h) - * OPTIONS can be -D or -I switches as you would pass to cpp. - - Written by Per Bothner <bothner@cygnus.com>, July 1993. */ - -#include "bconfig.h" -#include "system.h" -#include "coretypes.h" -#include "tm.h" -#include "obstack.h" -#include "scan.h" -#include "cpplib.h" -#include "c-incpath.h" -#include "errors.h" - -#ifdef TARGET_EXTRA_INCLUDES -void -TARGET_EXTRA_INCLUDES (const char *sysroot ATTRIBUTE_UNUSED, - const char *iprefix ATTRIBUTE_UNUSED, - int stdinc ATTRIBUTE_UNUSED) -{ -} -#endif - -#ifdef TARGET_EXTRA_PRE_INCLUDES -void -TARGET_EXTRA_PRE_INCLUDES (const char *sysroot ATTRIBUTE_UNUSED, - const char *iprefix ATTRIBUTE_UNUSED, - int stdinc ATTRIBUTE_UNUSED) -{ -} -#endif - -struct line_maps line_table; - -sstring buf; - -int verbose = 0; -int partial_count = 0; -int warnings = 0; - -#if ADD_MISSING_EXTERN_C -int missing_extern_C_count = 0; -#endif - -#include "xsys-protos.h" - -#ifdef FIXPROTO_IGNORE_LIST -/* This is a currently unused feature. */ - -/* List of files and directories to ignore. - A directory name (ending in '/') means ignore anything in that - directory. (It might be more efficient to do directory pruning - earlier in fixproto, but this is simpler and easier to customize.) */ - -static const char *const files_to_ignore[] = { - "X11/", - FIXPROTO_IGNORE_LIST - 0 -}; -#endif - -char *inf_buffer; -char *inf_limit; -char *inf_ptr; -static const char *cur_file; - -/* Certain standard files get extra treatment */ - -enum special_file -{ - no_special, -#ifdef errno_h -#undef errno_h -#endif - errno_h, -#ifdef stdio_h -#undef stdio_h -#endif - stdio_h, -#ifdef stdlib_h -#undef stdlib_h -#endif - stdlib_h, -#ifdef sys_stat_h -#undef sys_stat_h -#endif - sys_stat_h -}; - -/* A NAMELIST is a sequence of names, separated by '\0', and terminated - by an empty name (i.e. by "\0\0"). */ - -typedef const char *namelist; - -/* The following macros provide the bits for symbol_flags. */ -typedef int symbol_flags; - -/* Used to mark names defined in the ANSI/ISO C standard. */ -#define ANSI_SYMBOL 1 - -/* We no longer massage include files for POSIX or XOPEN symbols, - as there are now several versions of the POSIX and XOPEN standards, - and it would be a maintenance nightmare for us to track them all. - Better to be compatible with the system include files. */ -/*#define ADD_MISSING_POSIX 1 */ -/*#define ADD_MISSING_XOPEN 1 */ - -#if ADD_MISSING_POSIX -/* Used to mark names defined in the Posix.1 or Posix.2 standard. */ -#define POSIX1_SYMBOL 2 -#define POSIX2_SYMBOL 4 -#else -#define POSIX1_SYMBOL 0 -#define POSIX2_SYMBOL 0 -#endif - -#if ADD_MISSING_XOPEN -/* Used to mark names defined in X/Open Portability Guide. */ -#define XOPEN_SYMBOL 8 -/* Used to mark names defined in X/Open UNIX Extensions. */ -#define XOPEN_EXTENDED_SYMBOL 16 -#else -#define XOPEN_SYMBOL 0 -#define XOPEN_EXTENDED_SYMBOL 0 -#endif - -/* Used to indicate names that are not functions */ -#define MACRO_SYMBOL 512 - -struct symbol_list { - symbol_flags flags; - namelist names; -}; - -#define SYMBOL_TABLE_SIZE 10 -struct symbol_list symbol_table[SYMBOL_TABLE_SIZE]; -int cur_symbol_table_size; - -static void add_symbols (symbol_flags, namelist); -static struct fn_decl *lookup_std_proto (const char *, int); -static void write_lbrac (void); -static void recognized_macro (const char *); -static void check_macro_names (cpp_reader *, namelist); -static void read_scan_file (char *, int, char **); -static void write_rbrac (void); -static int inf_skip_spaces (int); -static int inf_read_upto (sstring *, int); -static int inf_scan_ident (sstring *, int); -static int check_protection (int *, int *); -static void cb_file_change (cpp_reader *, const struct line_map *); - -static void -add_symbols (symbol_flags flags, namelist names) -{ - symbol_table[cur_symbol_table_size].flags = flags; - symbol_table[cur_symbol_table_size].names = names; - cur_symbol_table_size++; - if (cur_symbol_table_size >= SYMBOL_TABLE_SIZE) - fatal ("too many calls to add_symbols"); - symbol_table[cur_symbol_table_size].names = NULL; /* Termination. */ -} - -struct std_include_entry { - const char *const name; - const symbol_flags flags; - const namelist names; -}; - -const char NONE[] = ""; /* The empty namelist. */ - -/* Special name to indicate a continuation line in std_include_table. */ -const char CONTINUED[] = ""; - -const struct std_include_entry *include_entry; - -const struct std_include_entry std_include_table [] = { - { "ctype.h", ANSI_SYMBOL, - "isalnum\0isalpha\0iscntrl\0isdigit\0isgraph\0islower\0\ -isprint\0ispunct\0isspace\0isupper\0isxdigit\0tolower\0toupper\0" }, - - { "dirent.h", POSIX1_SYMBOL, "closedir\0opendir\0readdir\0rewinddir\0"}, - - { "errno.h", ANSI_SYMBOL|MACRO_SYMBOL, "errno\0" }, - - /* ANSI_SYMBOL is wrong, but ... */ - { "curses.h", ANSI_SYMBOL, "box\0delwin\0endwin\0getcurx\0getcury\0initscr\0\ -mvcur\0mvwprintw\0mvwscanw\0newwin\0overlay\0overwrite\0\ -scroll\0subwin\0touchwin\0waddstr\0wclear\0wclrtobot\0wclrtoeol\0\ -waddch\0wdelch\0wdeleteln\0werase\0wgetch\0wgetstr\0winsch\0winsertln\0\ -wmove\0wprintw\0wrefresh\0wscanw\0wstandend\0wstandout\0" }, - - { "fcntl.h", POSIX1_SYMBOL, "creat\0fcntl\0open\0" }, - - /* Maybe also "getgrent fgetgrent setgrent endgrent" */ - { "grp.h", POSIX1_SYMBOL, "getgrgid\0getgrnam\0" }, - -/*{ "limit.h", ... provided by gcc }, */ - - { "locale.h", ANSI_SYMBOL, "localeconv\0setlocale\0" }, - - { "math.h", ANSI_SYMBOL, - "acos\0asin\0atan\0atan2\0ceil\0cos\0cosh\0exp\0\ -fabs\0floor\0fmod\0frexp\0ldexp\0log10\0log\0modf\0pow\0sin\0sinh\0sqrt\0\ -tan\0tanh\0" }, - - { CONTINUED, ANSI_SYMBOL|MACRO_SYMBOL, "HUGE_VAL\0" }, - - { "pwd.h", POSIX1_SYMBOL, "getpwnam\0getpwuid\0" }, - - /* Left out siglongjmp sigsetjmp - these depend on sigjmp_buf. */ - { "setjmp.h", ANSI_SYMBOL, "longjmp\0setjmp\0" }, - - /* Left out signal() - its prototype is too complex for us! - Also left out "sigaction sigaddset sigdelset sigemptyset - sigfillset sigismember sigpending sigprocmask sigsuspend" - because these need sigset_t or struct sigaction. - Most systems that provide them will also declare them. */ - { "signal.h", ANSI_SYMBOL, "raise\0" }, - { CONTINUED, POSIX1_SYMBOL, "kill\0" }, - - { "stdio.h", ANSI_SYMBOL, - "clearerr\0fclose\0feof\0ferror\0fflush\0fgetc\0fgetpos\0\ -fgets\0fopen\0fprintf\0fputc\0fputs\0fread\0freopen\0fscanf\0fseek\0\ -fsetpos\0ftell\0fwrite\0getc\0getchar\0gets\0perror\0\ -printf\0putc\0putchar\0puts\0remove\0rename\0rewind\0scanf\0setbuf\0\ -setvbuf\0sprintf\0sscanf\0vprintf\0vsprintf\0vfprintf\0tmpfile\0\ -tmpnam\0ungetc\0" }, - { CONTINUED, POSIX1_SYMBOL, "fdopen\0fileno\0" }, - { CONTINUED, POSIX2_SYMBOL, "pclose\0popen\0" }, /* I think ... */ -/* Should perhaps also handle NULL, EOF, ... ? */ - - /* "div ldiv", - ignored because these depend on div_t, ldiv_t - ignore these: "mblen mbstowcs mbstowc wcstombs wctomb" - Left out getgroups, because SunOS4 has incompatible BSD and SVR4 versions. - Should perhaps also add NULL */ - { "stdlib.h", ANSI_SYMBOL, - "abort\0abs\0atexit\0atof\0atoi\0atol\0bsearch\0calloc\0\ -exit\0free\0getenv\0labs\0malloc\0qsort\0rand\0realloc\0\ -srand\0strtod\0strtol\0strtoul\0system\0" }, - { CONTINUED, ANSI_SYMBOL|MACRO_SYMBOL, "EXIT_FAILURE\0EXIT_SUCCESS\0" }, - { CONTINUED, POSIX1_SYMBOL, "putenv\0" }, - - { "string.h", ANSI_SYMBOL, "memchr\0memcmp\0memcpy\0memmove\0memset\0\ -strcat\0strchr\0strcmp\0strcoll\0strcpy\0strcspn\0strerror\0\ -strlen\0strncat\0strncmp\0strncpy\0strpbrk\0strrchr\0strspn\0strstr\0\ -strtok\0strxfrm\0" }, -/* Should perhaps also add NULL and size_t */ - - { "strings.h", XOPEN_EXTENDED_SYMBOL, - "bcmp\0bcopy\0bzero\0ffs\0index\0rindex\0strcasecmp\0strncasecmp\0" }, - - { "strops.h", XOPEN_EXTENDED_SYMBOL, "ioctl\0" }, - - /* Actually, XPG4 does not seem to have <sys/ioctl.h>, but defines - ioctl in <strops.h>. However, many systems have it is sys/ioctl.h, - and many systems do have <sys/ioctl.h> but not <strops.h>. */ - { "sys/ioctl.h", XOPEN_EXTENDED_SYMBOL, "ioctl\0" }, - - { "sys/socket.h", XOPEN_EXTENDED_SYMBOL, "socket\0" }, - - { "sys/stat.h", POSIX1_SYMBOL, - "chmod\0fstat\0mkdir\0mkfifo\0stat\0lstat\0umask\0" }, - { CONTINUED, POSIX1_SYMBOL|MACRO_SYMBOL, - "S_ISDIR\0S_ISBLK\0S_ISCHR\0S_ISFIFO\0S_ISREG\0S_ISLNK\0S_IFDIR\0\ -S_IFBLK\0S_IFCHR\0S_IFIFO\0S_IFREG\0S_IFLNK\0" }, - { CONTINUED, XOPEN_EXTENDED_SYMBOL, "fchmod\0" }, - -#if 0 -/* How do we handle fd_set? */ - { "sys/time.h", XOPEN_EXTENDED_SYMBOL, "select\0" }, - { "sys/select.h", XOPEN_EXTENDED_SYMBOL /* fake */, "select\0" }, -#endif - - { "sys/times.h", POSIX1_SYMBOL, "times\0" }, - /* "sys/types.h" add types (not in old g++-include) */ - - { "sys/utsname.h", POSIX1_SYMBOL, "uname\0" }, - - { "sys/wait.h", POSIX1_SYMBOL, "wait\0waitpid\0" }, - { CONTINUED, POSIX1_SYMBOL|MACRO_SYMBOL, - "WEXITSTATUS\0WIFEXITED\0WIFSIGNALED\0WIFSTOPPED\0WSTOPSIG\0\ -WTERMSIG\0WNOHANG\0WNOTRACED\0" }, - - { "tar.h", POSIX1_SYMBOL, NONE }, - - { "termios.h", POSIX1_SYMBOL, - "cfgetispeed\0cfgetospeed\0cfsetispeed\0cfsetospeed\0tcdrain\0tcflow\0tcflush\0tcgetattr\0tcsendbreak\0tcsetattr\0" }, - - { "time.h", ANSI_SYMBOL, - "asctime\0clock\0ctime\0difftime\0gmtime\0localtime\0mktime\0strftime\0time\0" }, - { CONTINUED, POSIX1_SYMBOL, "tzset\0" }, - - { "unistd.h", POSIX1_SYMBOL, - "_exit\0access\0alarm\0chdir\0chown\0close\0ctermid\0cuserid\0\ -dup\0dup2\0execl\0execle\0execlp\0execv\0execve\0execvp\0fork\0fpathconf\0\ -getcwd\0getegid\0geteuid\0getgid\0getlogin\0getpgrp\0getpid\0\ -getppid\0getuid\0isatty\0link\0lseek\0pathconf\0pause\0pipe\0read\0rmdir\0\ -setgid\0setpgid\0setsid\0setuid\0sleep\0sysconf\0tcgetpgrp\0tcsetpgrp\0\ -ttyname\0unlink\0write\0" }, - { CONTINUED, POSIX2_SYMBOL, "getopt\0" }, - { CONTINUED, XOPEN_EXTENDED_SYMBOL, - "lockf\0gethostid\0gethostname\0readlink\0symlink\0" }, - - { "utime.h", POSIX1_SYMBOL, "utime\0" }, - - { NULL, 0, NONE } -}; - -enum special_file special_file_handling = no_special; - -/* They are set if the corresponding macro has been seen. */ -/* The following are only used when handling sys/stat.h */ -int seen_S_IFBLK = 0, seen_S_ISBLK = 0; -int seen_S_IFCHR = 0, seen_S_ISCHR = 0; -int seen_S_IFDIR = 0, seen_S_ISDIR = 0; -int seen_S_IFIFO = 0, seen_S_ISFIFO = 0; -int seen_S_IFLNK = 0, seen_S_ISLNK = 0; -int seen_S_IFREG = 0, seen_S_ISREG = 0; -/* The following are only used when handling errno.h */ -int seen_errno = 0; -/* The following are only used when handling stdlib.h */ -int seen_EXIT_FAILURE = 0, seen_EXIT_SUCCESS = 0; - -struct obstack scan_file_obstack; - -/* NOTE: If you edit this, also edit gen-protos.c !! */ - -static struct fn_decl * -lookup_std_proto (const char *name, int name_length) -{ - int i = hashstr (name, name_length) % HASH_SIZE; - int i0 = i; - for (;;) - { - struct fn_decl *fn; - if (hash_tab[i] == 0) - return NULL; - fn = &std_protos[hash_tab[i]]; - if ((int) strlen (fn->fname) == name_length - && strncmp (fn->fname, name, name_length) == 0) - return fn; - i = (i+1) % HASH_SIZE; - gcc_assert (i != i0); - } -} - -char *inc_filename; -int inc_filename_length; -FILE *outf; -sstring line; - -int lbrac_line, rbrac_line; - -int required_unseen_count = 0; -int required_other = 0; - -static void -write_lbrac (void) -{ - if (partial_count) - { - fprintf (outf, "#ifndef _PARAMS\n"); - fprintf (outf, "#if defined(__STDC__) || defined(__cplusplus)\n"); - fprintf (outf, "#define _PARAMS(ARGS) ARGS\n"); - fprintf (outf, "#else\n"); - fprintf (outf, "#define _PARAMS(ARGS) ()\n"); - fprintf (outf, "#endif\n#endif /* _PARAMS */\n"); - } -} - -struct partial_proto -{ - struct partial_proto *next; - struct fn_decl *fn; - int line_seen; -}; - -struct partial_proto *partial_proto_list = NULL; - -struct partial_proto required_dummy_proto, seen_dummy_proto; -#define REQUIRED(FN) ((FN)->partial == &required_dummy_proto) -#define SET_REQUIRED(FN) ((FN)->partial = &required_dummy_proto) -#define SET_SEEN(FN) ((FN)->partial = &seen_dummy_proto) -#define SEEN(FN) ((FN)->partial == &seen_dummy_proto) - -static void -recognized_macro (const char *fname) -{ - /* The original include file defines fname as a macro. */ - struct fn_decl *fn = lookup_std_proto (fname, strlen (fname)); - - /* Since fname is a macro, don't require a prototype for it. */ - if (fn) - { - if (REQUIRED (fn)) - required_unseen_count--; - SET_SEEN (fn); - } - - switch (special_file_handling) - { - case errno_h: - if (strcmp (fname, "errno") == 0 && !seen_errno) - seen_errno = 1, required_other--; - break; - case stdlib_h: - if (strcmp (fname, "EXIT_FAILURE") == 0 && !seen_EXIT_FAILURE) - seen_EXIT_FAILURE = 1, required_other--; - if (strcmp (fname, "EXIT_SUCCESS") == 0 && !seen_EXIT_SUCCESS) - seen_EXIT_SUCCESS = 1, required_other--; - break; - case sys_stat_h: - if (fname[0] == 'S' && fname[1] == '_') - { - if (strcmp (fname, "S_IFBLK") == 0) seen_S_IFBLK++; - else if (strcmp (fname, "S_ISBLK") == 0) seen_S_ISBLK++; - else if (strcmp (fname, "S_IFCHR") == 0) seen_S_IFCHR++; - else if (strcmp (fname, "S_ISCHR") == 0) seen_S_ISCHR++; - else if (strcmp (fname, "S_IFDIR") == 0) seen_S_IFDIR++; - else if (strcmp (fname, "S_ISDIR") == 0) seen_S_ISDIR++; - else if (strcmp (fname, "S_IFIFO") == 0) seen_S_IFIFO++; - else if (strcmp (fname, "S_ISFIFO") == 0) seen_S_ISFIFO++; - else if (strcmp (fname, "S_IFLNK") == 0) seen_S_IFLNK++; - else if (strcmp (fname, "S_ISLNK") == 0) seen_S_ISLNK++; - else if (strcmp (fname, "S_IFREG") == 0) seen_S_IFREG++; - else if (strcmp (fname, "S_ISREG") == 0) seen_S_ISREG++; - } - break; - - default: - break; - } -} - -void -recognized_extern (const cpp_token *name) -{ - switch (special_file_handling) - { - case errno_h: - if (cpp_ideq (name, "errno")) - seen_errno = 1, required_other--; - break; - - default: - break; - } -} - -/* Called by scan_decls if it saw a function definition for a function - named FNAME. KIND is 'I' for an inline function; 'F' if a normal - function declaration preceded by 'extern "C"' (or nested inside - 'extern "C"' braces); or 'f' for other function declarations. */ - -void -recognized_function (const cpp_token *fname, unsigned int line, int kind, - int have_arg_list) -{ - struct partial_proto *partial; - int i; - struct fn_decl *fn; - - fn = lookup_std_proto ((const char *) NODE_NAME (fname->val.node), - NODE_LEN (fname->val.node)); - - /* Remove the function from the list of required function. */ - if (fn) - { - if (REQUIRED (fn)) - required_unseen_count--; - SET_SEEN (fn); - } - - /* If we have a full prototype, we're done. */ - if (have_arg_list) - return; - - if (kind == 'I') /* don't edit inline function */ - return; - - /* If the partial prototype was included from some other file, - we don't need to patch it up (in this run). */ - i = strlen (cur_file); - if (i < inc_filename_length - || strcmp (inc_filename, cur_file + (i - inc_filename_length)) != 0) - return; - - if (fn == NULL) - return; - if (fn->params[0] == '\0') - return; - - /* We only have a partial function declaration, - so remember that we have to add a complete prototype. */ - partial_count++; - partial = obstack_alloc (&scan_file_obstack, sizeof (struct partial_proto)); - partial->line_seen = line; - partial->fn = fn; - fn->partial = partial; - partial->next = partial_proto_list; - partial_proto_list = partial; - if (verbose) - { - fprintf (stderr, "(%s: %s non-prototype function declaration.)\n", - inc_filename, fn->fname); - } -} - -/* For any name in NAMES that is defined as a macro, - call recognized_macro on it. */ - -static void -check_macro_names (cpp_reader *pfile, namelist names) -{ - size_t len; - while (*names) - { - len = strlen (names); - if (cpp_defined (pfile, (const unsigned char *)names, len)) - recognized_macro (names); - names += len + 1; - } -} - -static void -cb_file_change (cpp_reader *pfile ATTRIBUTE_UNUSED, - const struct line_map *map) -{ - /* Just keep track of current file name. */ - cur_file = map == NULL ? NULL : map->to_file; -} - -static void -read_scan_file (char *in_fname, int argc, char **argv) -{ - cpp_reader *scan_in; - cpp_callbacks *cb; - cpp_options *options; - struct fn_decl *fn; - int i, strings_processed; - struct symbol_list *cur_symbols; - - obstack_init (&scan_file_obstack); - - linemap_init (&line_table); - scan_in = cpp_create_reader (CLK_GNUC89, NULL, &line_table); - cb = cpp_get_callbacks (scan_in); - cb->file_change = cb_file_change; - - /* We are going to be scanning a header file out of its proper context, - so ignore warnings and errors. */ - options = cpp_get_options (scan_in); - options->inhibit_warnings = 1; - options->inhibit_errors = 1; - cpp_post_options (scan_in); - - if (!cpp_read_main_file (scan_in, in_fname)) - exit (FATAL_EXIT_CODE); - - cpp_change_file (scan_in, LC_RENAME, "<built-in>"); - cpp_init_builtins (scan_in, true); - cpp_change_file (scan_in, LC_RENAME, in_fname); - - /* Process switches after builtins so -D can override them. */ - for (i = 0; i < argc; i += strings_processed) - { - strings_processed = 0; - if (argv[i][0] == '-') - { - if (argv[i][1] == 'I') - { - if (argv[i][2] != '\0') - { - strings_processed = 1; - add_path (xstrdup (argv[i] + 2), BRACKET, false, false); - } - else if (i + 1 != argc) - { - strings_processed = 2; - add_path (xstrdup (argv[i + 1]), BRACKET, false, false); - } - } - else if (argv[i][1] == 'D') - { - if (argv[i][2] != '\0') - strings_processed = 1, cpp_define (scan_in, argv[i] + 2); - else if (i + 1 != argc) - strings_processed = 2, cpp_define (scan_in, argv[i + 1]); - } - } - - if (strings_processed == 0) - break; - } - - if (i < argc) - cpp_error (scan_in, CPP_DL_ERROR, "invalid option `%s'", argv[i]); - if (cpp_errors (scan_in)) - exit (FATAL_EXIT_CODE); - - register_include_chains (scan_in, NULL /* sysroot */, NULL /* iprefix */, - NULL /* imultilib */, true /* stdinc */, - false /* cxx_stdinc */, false /* verbose */); - - /* We are scanning a system header, so mark it as such. */ - cpp_make_system_header (scan_in, 1, 0); - - scan_decls (scan_in, argc, argv); - for (cur_symbols = &symbol_table[0]; cur_symbols->names; cur_symbols++) - check_macro_names (scan_in, cur_symbols->names); - - /* Traditionally, getc and putc are defined in terms of _filbuf and _flsbuf. - If so, those functions are also required. */ - if (special_file_handling == stdio_h - && (fn = lookup_std_proto ("_filbuf", 7)) != NULL) - { - unsigned char getchar_call[] = "getchar();\n"; - int seen_filbuf = 0; - - /* Scan the macro expansion of "getchar();". */ - cpp_push_buffer (scan_in, getchar_call, sizeof(getchar_call) - 1, - /* from_stage3 */ true); - for (;;) - { - const cpp_token *t = cpp_get_token (scan_in); - - if (t->type == CPP_EOF) - break; - else if (cpp_ideq (t, "_filbuf")) - seen_filbuf++; - } - - if (seen_filbuf) - { - int need_filbuf = !SEEN (fn) && !REQUIRED (fn); - struct fn_decl *flsbuf_fn = lookup_std_proto ("_flsbuf", 7); - int need_flsbuf - = flsbuf_fn && !SEEN (flsbuf_fn) && !REQUIRED (flsbuf_fn); - - /* Append "_filbuf" and/or "_flsbuf" to the required functions. */ - if (need_filbuf + need_flsbuf) - { - const char *new_list; - if (need_filbuf) - SET_REQUIRED (fn); - if (need_flsbuf) - SET_REQUIRED (flsbuf_fn); - if (need_flsbuf && need_filbuf) - new_list = "_filbuf\0_flsbuf\0"; - else if (need_flsbuf) - new_list = "_flsbuf\0"; - else /* if (need_flsbuf) */ - new_list = "_filbuf\0"; - add_symbols (ANSI_SYMBOL, new_list); - required_unseen_count += need_filbuf + need_flsbuf; - } - } - } - - if (required_unseen_count + partial_count + required_other == 0) - { - if (verbose) - fprintf (stderr, "%s: OK, nothing needs to be done.\n", inc_filename); - exit (SUCCESS_EXIT_CODE); - } - if (!verbose) - fprintf (stderr, "%s: fixing %s\n", progname, inc_filename); - else - { - if (required_unseen_count) - fprintf (stderr, "%s: %d missing function declarations.\n", - inc_filename, required_unseen_count); - if (partial_count) - fprintf (stderr, "%s: %d non-prototype function declarations.\n", - inc_filename, partial_count); - } -} - -static void -write_rbrac (void) -{ - struct fn_decl *fn; - const char *cptr; - struct symbol_list *cur_symbols; - - if (required_unseen_count) - { -#ifdef NO_IMPLICIT_EXTERN_C - fprintf (outf, "#ifdef __cplusplus\nextern \"C\" {\n#endif\n"); -#endif - } - - /* Now we print out prototypes for those functions that we haven't seen. */ - for (cur_symbols = &symbol_table[0]; cur_symbols->names; cur_symbols++) - { - int if_was_emitted = 0; - int name_len; - cptr = cur_symbols->names; - for ( ; (name_len = strlen (cptr)) != 0; cptr+= name_len + 1) - { - int macro_protect = 0; - - if (cur_symbols->flags & MACRO_SYMBOL) - continue; - - fn = lookup_std_proto (cptr, name_len); - if (fn == NULL || !REQUIRED (fn)) - continue; - - if (!if_was_emitted) - { -/* what about curses. ??? or _flsbuf/_filbuf ??? */ - if (cur_symbols->flags & ANSI_SYMBOL) - fprintf (outf, - "#if defined(__USE_FIXED_PROTOTYPES__) || defined(__cplusplus) || defined (__STRICT_ANSI__)\n"); - else if (cur_symbols->flags & (POSIX1_SYMBOL|POSIX2_SYMBOL)) - fprintf (outf, - "#if defined(__USE_FIXED_PROTOTYPES__) || (defined(__cplusplus) \\\n\ - ? (!defined(__STRICT_ANSI__) || defined(_POSIX_SOURCE)) \\\n\ - : (defined(__STRICT_ANSI__) && defined(_POSIX_SOURCE)))\n"); - else if (cur_symbols->flags & XOPEN_SYMBOL) - { - fprintf (outf, - "#if defined(__USE_FIXED_PROTOTYPES__) \\\n\ - || (defined(__STRICT_ANSI__) && defined(_XOPEN_SOURCE))\n"); - } - else if (cur_symbols->flags & XOPEN_EXTENDED_SYMBOL) - { - fprintf (outf, - "#if defined(__USE_FIXED_PROTOTYPES__) \\\n\ - || (defined(__STRICT_ANSI__) && defined(_XOPEN_EXTENDED_SOURCE))\n"); - } - else - { - fatal ("internal error for function %s", fn->fname); - } - if_was_emitted = 1; - } - - /* In the case of memmove, protect in case the application - defines it as a macro before including the header. */ - if (!strcmp (fn->fname, "memmove") - || !strcmp (fn->fname, "putc") - || !strcmp (fn->fname, "getc") - || !strcmp (fn->fname, "vprintf") - || !strcmp (fn->fname, "vfprintf") - || !strcmp (fn->fname, "vsprintf") - || !strcmp (fn->fname, "rewinddir") - || !strcmp (fn->fname, "abort")) - macro_protect = 1; - - if (macro_protect) - fprintf (outf, "#ifndef %s\n", fn->fname); - fprintf (outf, "extern %s %s (%s);\n", - fn->rtype, fn->fname, fn->params); - if (macro_protect) - fprintf (outf, "#endif\n"); - } - if (if_was_emitted) - fprintf (outf, - "#endif /* defined(__USE_FIXED_PROTOTYPES__) || ... */\n"); - } - if (required_unseen_count) - { -#ifdef NO_IMPLICIT_EXTERN_C - fprintf (outf, "#ifdef __cplusplus\n}\n#endif\n"); -#endif - } - - switch (special_file_handling) - { - case errno_h: - if (!seen_errno) - fprintf (outf, "extern int errno;\n"); - break; - case stdlib_h: - if (!seen_EXIT_FAILURE) - fprintf (outf, "#define EXIT_FAILURE 1\n"); - if (!seen_EXIT_SUCCESS) - fprintf (outf, "#define EXIT_SUCCESS 0\n"); - break; - case sys_stat_h: - if (!seen_S_ISBLK && seen_S_IFBLK) - fprintf (outf, - "#define S_ISBLK(mode) (((mode) & S_IFMT) == S_IFBLK)\n"); - if (!seen_S_ISCHR && seen_S_IFCHR) - fprintf (outf, - "#define S_ISCHR(mode) (((mode) & S_IFMT) == S_IFCHR)\n"); - if (!seen_S_ISDIR && seen_S_IFDIR) - fprintf (outf, - "#define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)\n"); - if (!seen_S_ISFIFO && seen_S_IFIFO) - fprintf (outf, - "#define S_ISFIFO(mode) (((mode) & S_IFMT) == S_IFIFO)\n"); - if (!seen_S_ISLNK && seen_S_IFLNK) - fprintf (outf, - "#define S_ISLNK(mode) (((mode) & S_IFMT) == S_IFLNK)\n"); - if (!seen_S_ISREG && seen_S_IFREG) - fprintf (outf, - "#define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG)\n"); - break; - - default: - break; - } - -} - -/* Returns 1 iff the file is properly protected from multiple inclusion: - #ifndef PROTECT_NAME - #define PROTECT_NAME - #endif - - */ - -#define INF_GET() (inf_ptr < inf_limit ? *(unsigned char *) inf_ptr++ : EOF) -#define INF_UNGET(c) ((c)!=EOF && inf_ptr--) - -static int -inf_skip_spaces (int c) -{ - for (;;) - { - if (c == ' ' || c == '\t') - c = INF_GET (); - else if (c == '/') - { - c = INF_GET (); - if (c != '*') - { - (void) INF_UNGET (c); - return '/'; - } - c = INF_GET (); - for (;;) - { - if (c == EOF) - return EOF; - else if (c != '*') - { - if (c == '\n') - source_lineno++, lineno++; - c = INF_GET (); - } - else if ((c = INF_GET ()) == '/') - return INF_GET (); - } - } - else - break; - } - return c; -} - -/* Read into STR from inf_buffer upto DELIM. */ - -static int -inf_read_upto (sstring *str, int delim) -{ - int ch; - for (;;) - { - ch = INF_GET (); - if (ch == EOF || ch == delim) - break; - SSTRING_PUT (str, ch); - } - MAKE_SSTRING_SPACE (str, 1); - *str->ptr = 0; - return ch; -} - -static int -inf_scan_ident (sstring *s, int c) -{ - s->ptr = s->base; - if (ISIDST (c)) - { - for (;;) - { - SSTRING_PUT (s, c); - c = INF_GET (); - if (c == EOF || !(ISIDNUM (c))) - break; - } - } - MAKE_SSTRING_SPACE (s, 1); - *s->ptr = 0; - return c; -} - -/* Returns 1 if the file is correctly protected against multiple - inclusion, setting *ifndef_line to the line number of the initial #ifndef - and setting *endif_line to the final #endif. - Otherwise return 0. */ - -static int -check_protection (int *ifndef_line, int *endif_line) -{ - int c; - int if_nesting = 1; /* Level of nesting of #if's */ - char *protect_name = NULL; /* Identifier following initial #ifndef */ - int define_seen = 0; - - /* Skip initial white space (including comments). */ - for (;; lineno++) - { - c = inf_skip_spaces (' '); - if (c == EOF) - return 0; - if (c != '\n') - break; - } - if (c != '#') - return 0; - c = inf_scan_ident (&buf, inf_skip_spaces (' ')); - if (SSTRING_LENGTH (&buf) == 0 || strcmp (buf.base, "ifndef") != 0) - return 0; - - /* So far so good: We've seen an initial #ifndef. */ - *ifndef_line = lineno; - c = inf_scan_ident (&buf, inf_skip_spaces (c)); - if (SSTRING_LENGTH (&buf) == 0 || c == EOF) - return 0; - protect_name = xstrdup (buf.base); - - (void) INF_UNGET (c); - c = inf_read_upto (&buf, '\n'); - if (c == EOF) - return 0; - lineno++; - - for (;;) - { - c = inf_skip_spaces (' '); - if (c == EOF) - return 0; - if (c == '\n') - { - lineno++; - continue; - } - if (c != '#') - goto skip_to_eol; - c = inf_scan_ident (&buf, inf_skip_spaces (' ')); - if (SSTRING_LENGTH (&buf) == 0) - ; - else if (!strcmp (buf.base, "ifndef") - || !strcmp (buf.base, "ifdef") || !strcmp (buf.base, "if")) - { - if_nesting++; - } - else if (!strcmp (buf.base, "endif")) - { - if_nesting--; - if (if_nesting == 0) - break; - } - else if (!strcmp (buf.base, "else")) - { - if (if_nesting == 1) - return 0; - } - else if (!strcmp (buf.base, "define")) - { - c = inf_skip_spaces (c); - c = inf_scan_ident (&buf, c); - if (buf.base[0] > 0 && strcmp (buf.base, protect_name) == 0) - define_seen = 1; - } - skip_to_eol: - for (;;) - { - if (c == '\n' || c == EOF) - break; - c = INF_GET (); - } - if (c == EOF) - return 0; - lineno++; - } - - if (!define_seen) - return 0; - *endif_line = lineno; - /* Skip final white space (including comments). */ - for (;;) - { - c = inf_skip_spaces (' '); - if (c == EOF) - break; - if (c != '\n') - return 0; - } - - return 1; -} - -extern int main (int, char **); - -int -main (int argc, char **argv) -{ - int inf_fd; - struct stat sbuf; - int c; -#ifdef FIXPROTO_IGNORE_LIST - int i; -#endif - const char *cptr; - int ifndef_line; - int endif_line; - long to_read; - long int inf_size; - struct symbol_list *cur_symbols; - - progname = "fix-header"; - if (argv[0] && argv[0][0]) - { - char *p; - - progname = 0; - for (p = argv[0]; *p; p++) - if (*p == '/') - progname = p; - progname = progname ? progname+1 : argv[0]; - } - - if (argc < 4) - { - fprintf (stderr, "%s: Usage: foo.h infile.h outfile.h options\n", - progname); - exit (FATAL_EXIT_CODE); - } - - inc_filename = argv[1]; - inc_filename_length = strlen (inc_filename); - -#ifdef FIXPROTO_IGNORE_LIST - for (i = 0; files_to_ignore[i] != NULL; i++) - { - const char *const ignore_name = files_to_ignore[i]; - int ignore_len = strlen (ignore_name); - if (strncmp (inc_filename, ignore_name, ignore_len) == 0) - { - if (ignore_name[ignore_len-1] == '/' - || inc_filename[ignore_len] == '\0') - { - if (verbose) - fprintf (stderr, "%s: ignoring %s\n", progname, inc_filename); - exit (SUCCESS_EXIT_CODE); - } - } - - } -#endif - - if (strcmp (inc_filename, "sys/stat.h") == 0) - special_file_handling = sys_stat_h; - else if (strcmp (inc_filename, "errno.h") == 0) - special_file_handling = errno_h, required_other++; - else if (strcmp (inc_filename, "stdlib.h") == 0) - special_file_handling = stdlib_h, required_other+=2; - else if (strcmp (inc_filename, "stdio.h") == 0) - special_file_handling = stdio_h; - include_entry = std_include_table; - while (include_entry->name != NULL - && ((strcmp (include_entry->name, CONTINUED) == 0) - || strcmp (inc_filename, include_entry->name) != 0)) - include_entry++; - - if (include_entry->name != NULL) - { - const struct std_include_entry *entry; - cur_symbol_table_size = 0; - for (entry = include_entry; ;) - { - if (entry->flags) - add_symbols (entry->flags, entry->names); - entry++; - if (!entry->name || strcmp (entry->name, CONTINUED) != 0) - break; - } - } - else - symbol_table[0].names = NULL; - - /* Count and mark the prototypes required for this include file. */ - for (cur_symbols = &symbol_table[0]; cur_symbols->names; cur_symbols++) - { - int name_len; - if (cur_symbols->flags & MACRO_SYMBOL) - continue; - cptr = cur_symbols->names; - for ( ; (name_len = strlen (cptr)) != 0; cptr+= name_len + 1) - { - struct fn_decl *fn = lookup_std_proto (cptr, name_len); - required_unseen_count++; - if (fn == NULL) - fprintf (stderr, "Internal error: No prototype for %s\n", cptr); - else - SET_REQUIRED (fn); - } - } - - read_scan_file (argv[2], argc - 4, argv + 4); - - inf_fd = open (argv[2], O_RDONLY, 0666); - if (inf_fd < 0) - { - fprintf (stderr, "%s: Cannot open '%s' for reading -", - progname, argv[2]); - perror (NULL); - exit (FATAL_EXIT_CODE); - } - if (fstat (inf_fd, &sbuf) < 0) - { - fprintf (stderr, "%s: Cannot get size of '%s' -", progname, argv[2]); - perror (NULL); - exit (FATAL_EXIT_CODE); - } - inf_size = sbuf.st_size; - inf_buffer = XNEWVEC (char, inf_size + 2); - inf_ptr = inf_buffer; - - to_read = inf_size; - while (to_read > 0) - { - long i = read (inf_fd, inf_buffer + inf_size - to_read, to_read); - if (i < 0) - { - fprintf (stderr, "%s: Failed to read '%s' -", progname, argv[2]); - perror (NULL); - exit (FATAL_EXIT_CODE); - } - if (i == 0) - { - inf_size -= to_read; - break; - } - to_read -= i; - } - - close (inf_fd); - - /* Inf_size may have changed if read was short (as on VMS) */ - inf_buffer[inf_size] = '\n'; - inf_buffer[inf_size + 1] = '\0'; - inf_limit = inf_buffer + inf_size; - - /* If file doesn't end with '\n', add one. */ - if (inf_limit > inf_buffer && inf_limit[-1] != '\n') - inf_limit++; - - unlink (argv[3]); - outf = fopen (argv[3], "w"); - if (outf == NULL) - { - fprintf (stderr, "%s: Cannot open '%s' for writing -", - progname, argv[3]); - perror (NULL); - exit (FATAL_EXIT_CODE); - } - - lineno = 1; - - if (check_protection (&ifndef_line, &endif_line)) - { - lbrac_line = ifndef_line+1; - rbrac_line = endif_line; - } - else - { - lbrac_line = 1; - rbrac_line = -1; - } - - /* Reset input file. */ - inf_ptr = inf_buffer; - lineno = 1; - - for (;;) - { - if (lineno == lbrac_line) - write_lbrac (); - if (lineno == rbrac_line) - write_rbrac (); - for (;;) - { - struct fn_decl *fn; - c = INF_GET (); - if (c == EOF) - break; - if (ISIDST (c)) - { - c = inf_scan_ident (&buf, c); - (void) INF_UNGET (c); - fputs (buf.base, outf); - fn = lookup_std_proto (buf.base, strlen (buf.base)); - /* We only want to edit the declaration matching the one - seen by scan-decls, as there can be multiple - declarations, selected by #ifdef __STDC__ or whatever. */ - if (fn && fn->partial && fn->partial->line_seen == lineno) - { - c = inf_skip_spaces (' '); - if (c == EOF) - break; - if (c == '(') - { - c = inf_skip_spaces (' '); - if (c == ')') - { - fprintf (outf, " _PARAMS((%s))", fn->params); - } - else - { - putc ('(', outf); - (void) INF_UNGET (c); - } - } - else - fprintf (outf, " %c", c); - } - } - else - { - putc (c, outf); - if (c == '\n') - break; - } - } - if (c == EOF) - break; - lineno++; - } - if (rbrac_line < 0) - write_rbrac (); - - fclose (outf); - - return 0; -} |