--- /dev/null
+
+/*
+
+ Test to see if a particular fix should be applied to a header file.
+
+ Copyright (C) 1997, 1998, 1999, 2000, 2001, 2003
+ Free Software Foundation, Inc.
+
+= = = = = = = = = = = = = = = = = = = = = = = = =
+
+NOTE TO DEVELOPERS
+
+The routines you write here must work closely with fixincl.c.
+
+Here are the rules:
+
+1. Every test procedure name must be suffixed with "_fix".
+ These routines will be referenced from inclhack.def, sans the suffix.
+
+2. Use the "FIX_PROC_HEAD()" macro _with_ the "_fix" suffix
+ (I cannot use the ## magic from ANSI C) for defining your entry point.
+
+3. Put your test name into the FIXUP_TABLE.
+
+4. Do not read anything from stdin. It is closed.
+
+5. Write to stderr only in the event of a reportable error
+ In such an event, call "exit (EXIT_FAILURE)".
+
+6. You have access to the fixDescList entry for the fix in question.
+ This may be useful, for example, if there are interesting strings
+ or pre-compiled regular expressions stored there.
+
+= = = = = = = = = = = = = = = = = = = = = = = = =
+
+This file is part of GCC.
+
+GCC 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.
+
+GCC 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 GCC; see the file COPYING. If not, write to
+the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
+
+#include "fixlib.h"
+#define GTYPE_SE_CT 1
+
+#ifdef SEPARATE_FIX_PROC
+#include "fixincl.x"
+#endif
+
+tSCC zNeedsArg[] = "fixincl error: `%s' needs %s argument (c_fix_arg[%d])\n";
+
+typedef void t_fix_proc (const char *, const char *, tFixDesc *) ;
+typedef struct {
+ const char* fix_name;
+ t_fix_proc* fix_proc;
+} fix_entry_t;
+
+#define FIXUP_TABLE \
+ _FT_( "char_macro_def", char_macro_def_fix ) \
+ _FT_( "char_macro_use", char_macro_use_fix ) \
+ _FT_( "format", format_fix ) \
+ _FT_( "machine_name", machine_name_fix ) \
+ _FT_( "wrap", wrap_fix ) \
+ _FT_( "gnu_type", gnu_type_fix )
+
+
+#define FIX_PROC_HEAD( fix ) \
+static void fix (const char* filname ATTRIBUTE_UNUSED , \
+ const char* text ATTRIBUTE_UNUSED , \
+ tFixDesc* p_fixd ATTRIBUTE_UNUSED )
+
+#ifdef NEED_PRINT_QUOTE
+/*
+ * Skip over a quoted string. Single quote strings may
+ * contain multiple characters if the first character is
+ * a backslash. Especially a backslash followed by octal digits.
+ * We are not doing a correctness syntax check here.
+ */
+static char*
+print_quote(char q, char* text )
+{
+ fputc( q, stdout );
+
+ for (;;)
+ {
+ char ch = *(text++);
+ fputc( ch, stdout );
+
+ switch (ch)
+ {
+ case '\\':
+ if (*text == NUL)
+ goto quote_done;
+
+ fputc( *(text++), stdout );
+ break;
+
+ case '"':
+ case '\'':
+ if (ch != q)
+ break;
+ /*FALLTHROUGH*/
+
+ case '\n':
+ case NUL:
+ goto quote_done;
+ }
+ } quote_done:;
+
+ return text;
+}
+#endif /* NEED_PRINT_QUOTE */
+
+
+/*
+ * Emit the GNU standard type wrapped up in such a way that
+ * this thing can be encountered countless times during a compile
+ * and not cause even a warning.
+ */
+static const char*
+emit_gnu_type (const char* text, regmatch_t* rm )
+{
+ char z_TYPE[ 64 ];
+ char z_type[ 64 ];
+
+ fwrite (text, rm[0].rm_so, 1, stdout);
+
+ {
+ const char* ps = text + rm[1].rm_so;
+ const char* pe = text + rm[1].rm_eo;
+ char* pd = z_type;
+ char* pD = z_TYPE;
+
+ while (ps < pe)
+ *(pD++) = TOUPPER( *(pd++) = *(ps++) );
+
+ *pD = *pd = NUL;
+ }
+
+ /*
+ * Now print out the reformed typedef,
+ * with a C++ guard for WCHAR
+ */
+ {
+ tSCC z_fmt[] = "\
+#if !defined(_GCC_%s_T)%s\n\
+#define _GCC_%s_T\n\
+typedef __%s_TYPE__ %s_t;\n\
+#endif\n";
+
+ const char *const pz_guard = (strcmp (z_type, "wchar") == 0)
+ ? " && ! defined(__cplusplus)" : "";
+
+ printf (z_fmt, z_TYPE, pz_guard, z_TYPE, z_TYPE, z_type);
+ }
+
+ return text += rm[0].rm_eo;
+}
+
+
+/*
+ * Copy the `format' string to std out, replacing `%n' expressions
+ * with the matched text from a regular expression evaluation.
+ * Doubled '%' characters will be replaced with a single copy.
+ * '%' characters in other contexts and all other characters are
+ * copied out verbatim.
+ */
+static void
+format_write (tCC* format, tCC* text, regmatch_t av[] )
+{
+ int c;
+
+ while ((c = (unsigned)*(format++)) != NUL) {
+
+ if (c != '%')
+ {
+ putchar(c);
+ continue;
+ }
+
+ c = (unsigned)*(format++);
+
+ /*
+ * IF the character following a '%' is not a digit,
+ * THEN we will always emit a '%' and we may or may
+ * not emit the following character. We will end on
+ * a NUL and we will emit only one of a pair of '%'.
+ */
+ if (! ISDIGIT ( c ))
+ {
+ putchar( '%' );
+ switch (c) {
+ case NUL:
+ return;
+ case '%':
+ break;
+ default:
+ putchar(c);
+ }
+ }
+
+ /*
+ * Emit the matched subexpression numbered 'c'.
+ * IF, of course, there was such a match...
+ */
+ else {
+ regmatch_t* pRM = av + (c - (unsigned)'0');
+ size_t len;
+
+ if (pRM->rm_so < 0)
+ continue;
+
+ len = pRM->rm_eo - pRM->rm_so;
+ if (len > 0)
+ fwrite(text + pRM->rm_so, len, 1, stdout);
+ }
+ }
+}
+
+
+/*
+ * Search for multiple copies of a regular expression. Each block
+ * of matched text is replaced with the format string, as described
+ * above in `format_write'.
+ */
+FIX_PROC_HEAD( format_fix )
+{
+ tCC* pz_pat = p_fixd->patch_args[2];
+ tCC* pz_fmt = p_fixd->patch_args[1];
+ regex_t re;
+ regmatch_t rm[10];
+ IGNORE_ARG(filname);
+
+ /*
+ * We must have a format
+ */
+ if (pz_fmt == (tCC*)NULL)
+ {
+ fprintf( stderr, zNeedsArg, p_fixd->fix_name, "replacement format", 0 );
+ exit (EXIT_BROKEN);
+ }
+
+ /*
+ * IF we don't have a search text, then go find the first
+ * regular expression among the tests.
+ */
+ if (pz_pat == (tCC*)NULL)
+ {
+ tTestDesc* pTD = p_fixd->p_test_desc;
+ int ct = p_fixd->test_ct;
+ for (;;)
+ {
+ if (ct-- <= 0)
+ {
+ fprintf( stderr, zNeedsArg, p_fixd->fix_name, "search text", 1 );
+ exit (EXIT_BROKEN);
+ }
+
+ if (pTD->type == TT_EGREP)
+ {
+ pz_pat = pTD->pz_test_text;
+ break;
+ }
+
+ pTD++;
+ }
+ }
+
+ /*
+ * Replace every copy of the text we find
+ */
+ compile_re (pz_pat, &re, 1, "format search-text", "format_fix" );
+ while (xregexec (&re, text, 10, rm, 0) == 0)
+ {
+ fwrite( text, rm[0].rm_so, 1, stdout );
+ format_write( pz_fmt, text, rm );
+ text += rm[0].rm_eo;
+ }
+
+ /*
+ * Dump out the rest of the file
+ */
+ fputs (text, stdout);
+}
+
+
+/* Scan the input file for all occurrences of text like this:
+
+ #define TIOCCONS _IO(T, 12)
+
+ and change them to read like this:
+
+ #define TIOCCONS _IO('T', 12)
+
+ which is the required syntax per the C standard. (The definition of
+ _IO also has to be tweaked - see below.) 'IO' is actually whatever you
+ provide as the `c_fix_arg' argument. */
+
+FIX_PROC_HEAD( char_macro_use_fix )
+{
+ /* This regexp looks for a traditional-syntax #define (# in column 1)
+ of an object-like macro. */
+ static const char pat[] =
+ "^#[ \t]*define[ \t]+[_A-Za-z][_A-Za-z0-9]*[ \t]+";
+ static regex_t re;
+
+ const char* str = p_fixd->patch_args[1];
+ regmatch_t rm[1];
+ const char *p, *limit;
+ size_t len;
+ IGNORE_ARG(filname);
+
+ if (str == NULL)
+ {
+ fprintf (stderr, zNeedsArg, p_fixd->fix_name, "ioctl type", 0);
+ exit (EXIT_BROKEN);
+ }
+
+ len = strlen (str);
+ compile_re (pat, &re, 1, "macro pattern", "char_macro_use_fix");
+
+ for (p = text;
+ xregexec (&re, p, 1, rm, 0) == 0;
+ p = limit + 1)
+ {
+ /* p + rm[0].rm_eo is the first character of the macro replacement.
+ Find the end of the macro replacement, and the STR we were
+ sent to look for within the replacement. */
+ p += rm[0].rm_eo;
+ limit = p - 1;
+ do
+ {
+ limit = strchr (limit + 1, '\n');
+ if (!limit)
+ goto done;
+ }
+ while (limit[-1] == '\\');
+
+ do
+ {
+ if (*p == str[0] && !strncmp (p+1, str+1, len-1))
+ goto found;
+ }
+ while (++p < limit - len);
+ /* Hit end of line. */
+ continue;
+
+ found:
+ /* Found STR on this line. If the macro needs fixing,
+ the next few chars will be whitespace or uppercase,
+ then an open paren, then a single letter. */
+ while ((ISSPACE (*p) || ISUPPER (*p)) && p < limit) p++;
+ if (*p++ != '(')
+ continue;
+ if (!ISALPHA (*p))
+ continue;
+ if (ISIDNUM (p[1]))
+ continue;
+
+ /* Splat all preceding text into the output buffer,
+ quote the character at p, then proceed. */
+ fwrite (text, 1, p - text, stdout);
+ putchar ('\'');
+ putchar (*p);
+ putchar ('\'');
+ text = p + 1;
+ }
+ done:
+ fputs (text, stdout);
+}
+
+
+/* Scan the input file for all occurrences of text like this:
+
+ #define xxxIOxx(x, y) (....'x'<<16....)
+
+ and change them to read like this:
+
+ #define xxxIOxx(x, y) (....x<<16....)
+
+ which is the required syntax per the C standard. (The uses of _IO
+ also has to be tweaked - see above.) 'IO' is actually whatever
+ you provide as the `c_fix_arg' argument. */
+FIX_PROC_HEAD( char_macro_def_fix )
+{
+ /* This regexp looks for any traditional-syntax #define (# in column 1). */
+ static const char pat[] =
+ "^#[ \t]*define[ \t]+";
+ static regex_t re;
+
+ const char* str = p_fixd->patch_args[1];
+ regmatch_t rm[1];
+ const char *p, *limit;
+ char arg;
+ size_t len;
+ IGNORE_ARG(filname);
+
+ if (str == NULL)
+ {
+ fprintf (stderr, zNeedsArg, p_fixd->fix_name, "ioctl type", 0);
+ exit (EXIT_BROKEN);
+ }
+
+ len = strlen (str);
+ compile_re (pat, &re, 1, "macro pattern", "fix_char_macro_defines");
+
+ for (p = text;
+ xregexec (&re, p, 1, rm, 0) == 0;
+ p = limit + 1)
+ {
+ /* p + rm[0].rm_eo is the first character of the macro name.
+ Find the end of the macro replacement, and the STR we were
+ sent to look for within the name. */
+ p += rm[0].rm_eo;
+ limit = p - 1;
+ do
+ {
+ limit = strchr (limit + 1, '\n');
+ if (!limit)
+ goto done;
+ }
+ while (limit[-1] == '\\');
+
+ do
+ {
+ if (*p == str[0] && !strncmp (p+1, str+1, len-1))
+ goto found;
+ p++;
+ }
+ while (ISIDNUM (*p));
+ /* Hit end of macro name without finding the string. */
+ continue;
+
+ found:
+ /* Found STR in this macro name. If the macro needs fixing,
+ there may be a few uppercase letters, then there will be an
+ open paren with _no_ intervening whitespace, and then a
+ single letter. */
+ while (ISUPPER (*p) && p < limit) p++;
+ if (*p++ != '(')
+ continue;
+ if (!ISALPHA (*p))
+ continue;
+ if (ISIDNUM (p[1]))
+ continue;
+
+ /* The character at P is the one to look for in the following
+ text. */
+ arg = *p;
+ p += 2;
+
+ while (p < limit)
+ {
+ if (p[-1] == '\'' && p[0] == arg && p[1] == '\'')
+ {
+ /* Remove the quotes from this use of ARG. */
+ p--;
+ fwrite (text, 1, p - text, stdout);
+ putchar (arg);
+ p += 3;
+ text = p;
+ }
+ else
+ p++;
+ }
+ }
+ done:
+ fputs (text, stdout);
+}
+
+/* Fix for machine name #ifdefs that are not in the namespace reserved
+ by the C standard. They won't be defined if compiling with -ansi,
+ and the headers will break. We go to some trouble to only change
+ #ifdefs where the macro is defined by GCC in non-ansi mode; this
+ minimizes the number of headers touched. */
+
+#define SCRATCHSZ 64 /* hopefully long enough */
+
+FIX_PROC_HEAD( machine_name_fix )
+{
+ regmatch_t match[2];
+ const char *line, *base, *limit, *p, *q;
+ regex_t *label_re, *name_re;
+ char scratch[SCRATCHSZ];
+ size_t len;
+ IGNORE_ARG(filname);
+ IGNORE_ARG(p_fixd);
+
+ if (!mn_get_regexps (&label_re, &name_re, "machine_name_fix"))
+ {
+ fputs( "The target machine has no needed machine name fixes\n", stderr );
+ goto done;
+ }
+
+ scratch[0] = '_';
+ scratch[1] = '_';
+
+ for (base = text;
+ xregexec (label_re, base, 2, match, 0) == 0;
+ base = limit)
+ {
+ base += match[0].rm_eo;
+ /* We're looking at an #if or #ifdef. Scan forward for the
+ next non-escaped newline. */
+ line = limit = base;
+ do
+ {
+ limit++;
+ limit = strchr (limit, '\n');
+ if (!limit)
+ goto done;
+ }
+ while (limit[-1] == '\\');
+
+ /* If the 'name_pat' matches in between base and limit, we have
+ a bogon. It is not worth the hassle of excluding comments
+ because comments on #if/#ifdef lines are rare, and strings on
+ such lines are illegal.
+
+ REG_NOTBOL means 'base' is not at the beginning of a line, which
+ shouldn't matter since the name_re has no ^ anchor, but let's
+ be accurate anyway. */
+
+ for (;;)
+ {
+ again:
+ if (base == limit)
+ break;
+
+ if (xregexec (name_re, base, 1, match, REG_NOTBOL))
+ goto done; /* No remaining match in this file */
+
+ /* Match; is it on the line? */
+ if (match[0].rm_eo > limit - base)
+ break;
+
+ p = base + match[0].rm_so;
+ base += match[0].rm_eo;
+
+ /* One more test: if on the same line we have the same string
+ with the appropriate underscores, then leave it alone.
+ We want exactly two leading and trailing underscores. */
+ if (*p == '_')
+ {
+ len = base - p - ((*base == '_') ? 2 : 1);
+ q = p + 1;
+ }
+ else
+ {
+ len = base - p - ((*base == '_') ? 1 : 0);
+ q = p;
+ }
+ if (len + 4 > SCRATCHSZ)
+ abort ();
+ memcpy (&scratch[2], q, len);
+ len += 2;
+ scratch[len++] = '_';
+ scratch[len++] = '_';
+
+ for (q = line; q <= limit - len; q++)
+ if (*q == '_' && !strncmp (q, scratch, len))
+ goto again;
+
+ fwrite (text, 1, p - text, stdout);
+ fwrite (scratch, 1, len, stdout);
+
+ text = base;
+ }
+ }
+ done:
+ fputs (text, stdout);
+}
+
+
+FIX_PROC_HEAD( wrap_fix )
+{
+ tSCC z_no_wrap_pat[] = "^#if.*__need_";
+ static regex_t no_wrapping_re; /* assume zeroed data */
+
+ tCC* pz_name = NULL;
+
+ if (no_wrapping_re.allocated == 0)
+ compile_re( z_no_wrap_pat, &no_wrapping_re, 0, "no-wrap pattern",
+ "wrap-fix" );
+
+ /*
+ * IF we do *not* match the no-wrap re, then we have a double negative.
+ * A double negative means YES.
+ */
+ if (xregexec( &no_wrapping_re, text, 0, NULL, 0 ) != 0)
+ {
+ /*
+ * A single file can get wrapped more than once by different fixes.
+ * A single fix can wrap multiple files. Therefore, guard with
+ * *both* the fix name and the file name.
+ */
+ size_t ln = strlen( filname ) + strlen( p_fixd->fix_name ) + 14;
+ char* pz = xmalloc( ln );
+ pz_name = pz;
+ sprintf( pz, "FIXINC_WRAP_%s-%s", filname, p_fixd->fix_name );
+
+ for (pz += 12; 1; pz++) {
+ char ch = *pz;
+
+ if (ch == NUL)
+ break;
+
+ if (! ISALNUM( ch )) {
+ *pz = '_';
+ }
+ else {
+ *pz = TOUPPER( ch );
+ }
+ }
+
+ printf( "#ifndef %s\n", pz_name );
+ printf( "#define %s 1\n\n", pz_name );
+ }
+
+ if (p_fixd->patch_args[1] == (tCC*)NULL)
+ fputs( text, stdout );
+
+ else {
+ fputs( p_fixd->patch_args[1], stdout );
+ fputs( text, stdout );
+ if (p_fixd->patch_args[2] != (tCC*)NULL)
+ fputs( p_fixd->patch_args[2], stdout );
+ }
+
+ if (pz_name != NULL) {
+ printf( "\n#endif /* %s */\n", pz_name );
+ free( (void*)pz_name );
+ }
+}
+
+
+/*
+ * Search for multiple copies of a regular expression. Each block
+ * of matched text is replaced with the format string, as described
+ * above in `format_write'.
+ */
+FIX_PROC_HEAD( gnu_type_fix )
+{
+ const char* pz_pat;
+ regex_t re;
+ regmatch_t rm[GTYPE_SE_CT+1];
+ IGNORE_ARG(filname);
+
+ {
+ tTestDesc* pTD = p_fixd->p_test_desc;
+ int ct = p_fixd->test_ct;
+ for (;;)
+ {
+ if (ct-- <= 0)
+ {
+ fprintf (stderr, zNeedsArg, p_fixd->fix_name, "search text", 1);
+ exit (EXIT_BROKEN);
+ }
+
+ if (pTD->type == TT_EGREP)
+ {
+ pz_pat = pTD->pz_test_text;
+ break;
+ }
+
+ pTD++;
+ }
+ }
+
+ compile_re (pz_pat, &re, 1, "gnu type typedef", "gnu_type_fix");
+
+ while (xregexec (&re, text, GTYPE_SE_CT+1, rm, 0) == 0)
+ {
+ text = emit_gnu_type (text, rm);
+ }
+
+ /*
+ * Dump out the rest of the file
+ */
+ fputs (text, stdout);
+}
+
+
+/* = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
+
+ test for fix selector
+
+ THIS IS THE ONLY EXPORTED ROUTINE
+
+*/
+void
+apply_fix( tFixDesc* p_fixd, tCC* filname )
+{
+#define _FT_(n,p) { n, p },
+ static fix_entry_t fix_table[] = { FIXUP_TABLE { NULL, NULL }};
+#undef _FT_
+#define FIX_TABLE_CT (ARRAY_SIZE (fix_table)-1)
+
+ tCC* fixname = p_fixd->patch_args[0];
+ char* buf;
+ int ct = FIX_TABLE_CT;
+ fix_entry_t* pfe = fix_table;
+
+ for (;;)
+ {
+ if (strcmp (pfe->fix_name, fixname) == 0)
+ break;
+ if (--ct <= 0)
+ {
+ fprintf (stderr, "fixincl error: the `%s' fix is unknown\n",
+ fixname );
+ exit (EXIT_BROKEN);
+ }
+ pfe++;
+ }
+
+ buf = load_file_data (stdin);
+ (*pfe->fix_proc)( filname, buf, p_fixd );
+}
+
+#ifdef SEPARATE_FIX_PROC
+tSCC z_usage[] =
+"USAGE: applyfix <fix-name> <file-to-fix> <file-source> <file-destination>\n";
+tSCC z_reopen[] =
+"FS error %d (%s) reopening %s as std%s\n";
+
+int
+main( int argc, char** argv )
+{
+ tFixDesc* pFix;
+ char* pz_tmptmp;
+ char* pz_tmp_base;
+ char* pz_tmp_dot;
+
+ if (argc != 5)
+ {
+ usage_failure:
+ fputs (z_usage, stderr);
+ return EXIT_FAILURE;
+ }
+
+ {
+ char* pz = argv[1];
+ long idx;
+
+ if (! ISDIGIT ( *pz ))
+ goto usage_failure;
+
+ idx = strtol (pz, &pz, 10);
+ if ((*pz != NUL) || ((unsigned)idx >= FIX_COUNT))
+ goto usage_failure;
+ pFix = fixDescList + idx;
+ }
+
+ if (freopen (argv[3], "r", stdin) != stdin)
+ {
+ fprintf (stderr, z_reopen, errno, strerror( errno ), argv[3], "in");
+ return EXIT_FAILURE;
+ }
+
+ pz_tmptmp = xmalloc (strlen (argv[4]) + 5);
+ strcpy( pz_tmptmp, argv[4] );
+
+ /* Don't lose because "12345678" and "12345678X" map to the same
+ file under DOS restricted 8+3 file namespace. Note that DOS
+ doesn't allow more than one dot in the trunk of a file name. */
+ pz_tmp_base = basename( pz_tmptmp );
+ pz_tmp_dot = strchr( pz_tmp_base, '.' );
+ if (pathconf( pz_tmptmp, _PC_NAME_MAX ) <= 12 /* is this DOS or Windows9X? */
+ && pz_tmp_dot != (char*)NULL)
+ strcpy (pz_tmp_dot+1, "X"); /* nuke the original extension */
+ else
+ strcat (pz_tmptmp, ".X");
+ if (freopen (pz_tmptmp, "w", stdout) != stdout)
+ {
+ fprintf (stderr, z_reopen, errno, strerror( errno ), pz_tmptmp, "out");
+ return EXIT_FAILURE;
+ }
+
+ apply_fix (pFix, argv[1]);
+ fclose (stdout);
+ fclose (stdin);
+ unlink (argv[4]);
+ if (rename (pz_tmptmp, argv[4]) != 0)
+ {
+ fprintf (stderr, "error %d (%s) renaming %s to %s\n", errno,
+ strerror( errno ), pz_tmptmp, argv[4]);
+ return EXIT_FAILURE;
+ }
+
+ return EXIT_SUCCESS;
+}
+#endif
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