tools/winebuild/utils.c

   1 /*
   2  * Small utility functions for winebuild
   3  *
   4  * Copyright 2000 Alexandre Julliard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include "config.h"
  22 #include "wine/port.h"
  23
  24 #include <ctype.h>
  25 #include <stdarg.h>
  26 #include <stdio.h>
  27 #include <stdlib.h>
  28 #include <string.h>
  29
  30 #include "build.h"
  31
  32 void *xmalloc (size_t size)
  33 {
  34     void *res;
  35
  36     res = malloc (size ? size : 1);
  37     if (res == NULL)
  38     {
  39         fprintf (stderr, "Virtual memory exhausted.\n");
  40         exit (1);
  41     }
  42     return res;
  43 }
  44
  45 void *xrealloc (void *ptr, size_t size)
  46 {
  47     void *res = realloc (ptr, size);
  48     if (res == NULL)
  49     {
  50         fprintf (stderr, "Virtual memory exhausted.\n");
  51         exit (1);
  52     }
  53     return res;
  54 }
  55
  56 char *xstrdup( const char *str )
  57 {
  58     char *res = strdup( str );
  59     if (!res)
  60     {
  61         fprintf (stderr, "Virtual memory exhausted.\n");
  62         exit (1);
  63     }
  64     return res;
  65 }
  66
  67 char *strupper(char *s)
  68 {
  69     char *p;
  70     for (p = s; *p; p++) *p = toupper(*p);
  71     return s;
  72 }
  73
  74 void fatal_error( const char *msg, ... )
  75 {
  76     va_list valist;
  77     va_start( valist, msg );
  78     if (input_file_name)
  79     {
  80         fprintf( stderr, "%s:", input_file_name );
  81         if (current_line)
  82             fprintf( stderr, "%d:", current_line );
  83         fputc( ' ', stderr );
  84     }
  85     vfprintf( stderr, msg, valist );
  86     va_end( valist );
  87     exit(1);
  88 }
  89
  90 void fatal_perror( const char *msg, ... )
  91 {
  92     va_list valist;
  93     va_start( valist, msg );
  94     if (input_file_name)
  95     {
  96         fprintf( stderr, "%s:", input_file_name );
  97         if (current_line)
  98             fprintf( stderr, "%d:", current_line );
  99         fputc( ' ', stderr );
 100     }
 101     vfprintf( stderr, msg, valist );
 102     perror( " " );
 103     va_end( valist );
 104     exit(1);
 105 }
 106
 107 void warning( const char *msg, ... )
 108 {
 109     va_list valist;
 110
 111     if (!display_warnings) return;
 112     va_start( valist, msg );
 113     if (input_file_name)
 114     {
 115         fprintf( stderr, "%s:", input_file_name );
 116         if (current_line)
 117             fprintf( stderr, "%d:", current_line );
 118         fputc( ' ', stderr );
 119     }
 120     fprintf( stderr, "warning: " );
 121     vfprintf( stderr, msg, valist );
 122     va_end( valist );
 123 }
 124
 125 /* output a standard header for generated files */
 126 void output_standard_file_header( FILE *outfile )
 127 {
 128     if (input_file_name)
 129         fprintf( outfile, "/* File generated automatically from %s; do not edit! */\n",
 130                  input_file_name );
 131     else
 132         fprintf( outfile, "/* File generated automatically; do not edit! */\n" );
 133     fprintf( outfile,
 134              "/* This file can be copied, modified and distributed without restriction. */\n\n" );
 135 }
 136
 137 /* dump a byte stream into the assembly code */
 138 void dump_bytes( FILE *outfile, const unsigned char *data, int len,
 139                  const char *label, int constant )
 140 {
 141     int i;
 142
 143     fprintf( outfile, "\nstatic %sunsigned char %s[%d] = {",
 144              constant ? "const " : "", label, len );
 145     for (i = 0; i < len; i++)
 146     {
 147         if (!(i & 7)) fprintf( outfile, "\n  " );
 148         fprintf( outfile, "0x%02x", *data++ );
 149         if (i < len - 1) fprintf( outfile, "," );
 150     }
 151     fprintf( outfile, "\n};\n" );
 152 }
 153
 154
 155 /*******************************************************************
 156  *         open_input_file
 157  *
 158  * Open a file in the given srcdir and set the input_file_name global variable.
 159  */
 160 FILE *open_input_file( const char *srcdir, const char *name )
 161 {
 162     char *fullname;
 163     FILE *file;
 164
 165     if (srcdir)
 166     {
 167         fullname = xmalloc( strlen(srcdir) + strlen(name) + 2 );
 168         strcpy( fullname, srcdir );
 169         strcat( fullname, "/" );
 170         strcat( fullname, name );
 171     }
 172     else fullname = xstrdup( name );
 173
 174     if (!(file = fopen( fullname, "r" ))) fatal_error( "Cannot open file '%s'\n", fullname );
 175     input_file_name = fullname;
 176     current_line = 1;
 177     return file;
 178 }
 179
 180
 181 /*******************************************************************
 182  *         close_input_file
 183  *
 184  * Close the current input file (must have been opened with open_input_file).
 185  */
 186 void close_input_file( FILE *file )
 187 {
 188     fclose( file );
 189     free( input_file_name );
 190     input_file_name = NULL;
 191     current_line = 0;
 192 }
 193
 194
 195 /*******************************************************************
 196  *         make_c_identifier
 197  *
 198  * Map a string to a valid C identifier.
 199  */
 200 const char *make_c_identifier( const char *str )
 201 {
 202     static char buffer[256];
 203     char *p;
 204
 205     for (p = buffer; *str && p < buffer+sizeof(buffer)-1; p++, str++)
 206     {
 207         if (isalnum(*str)) *p = *str;
 208         else *p = '_';
 209     }
 210     *p = 0;
 211     return buffer;
 212 }
 213
 214
 215 /*****************************************************************
 216  *  Function:    get_alignment
 217  *
 218  *  Description:
 219  *    According to the info page for gas, the .align directive behaves
 220  * differently on different systems.  On some architectures, the
 221  * argument of a .align directive is the number of bytes to pad to, so
 222  * to align on an 8-byte boundary you'd say
 223  *     .align 8
 224  * On other systems, the argument is "the number of low-order zero bits
 225  * that the location counter must have after advancement."  So to
 226  * align on an 8-byte boundary you'd say
 227  *     .align 3
 228  *
 229  * The reason gas is written this way is that it's trying to mimick
 230  * native assemblers for the various architectures it runs on.  gas
 231  * provides other directives that work consistantly across
 232  * architectures, but of course we want to work on all arches with or
 233  * without gas.  Hence this function.
 234  *
 235  *
 236  *  Parameters:
 237  *                alignBoundary  --  the number of bytes to align to.
 238  *                                   If we're on an architecture where
 239  *                                   the assembler requires a 'number
 240  *                                   of low-order zero bits' as a
 241  *                                   .align argument, then this number
 242  *                                   must be a power of 2.
 243  *
 244  */
 245 int get_alignment(int alignBoundary)
 246 {
 247 #ifdef __PPC__
 248
 249     int n = 0;
 250
 251     switch(alignBoundary)
 252     {
 253     case 2:
 254         n = 1;
 255         break;
 256     case 4:
 257         n = 2;
 258         break;
 259     case 8:
 260         n = 3;
 261         break;
 262     case 16:
 263         n = 4;
 264         break;
 265     case 32:
 266         n = 5;
 267         break;
 268     case 64:
 269         n = 6;
 270         break;
 271     case 128:
 272         n = 7;
 273         break;
 274     case 256:
 275         n = 8;
 276         break;
 277     case 512:
 278         n = 9;
 279         break;
 280     case 1024:
 281         n = 10;
 282         break;
 283     case 2048:
 284         n = 11;
 285         break;
 286     case 4096:
 287         n = 12;
 288         break;
 289     case 8192:
 290         n = 13;
 291         break;
 292     case 16384:
 293         n = 14;
 294         break;
 295     case 32768:
 296         n = 15;
 297         break;
 298     case 65536:
 299         n = 16;
 300         break;
 301     default:
 302         fatal_error("Alignment to %d-byte boundary not supported on this architecture.\n",
 303                     alignBoundary);
 304     }
 305     return n;
 306
 307 #elif defined(__i386__) || defined(__sparc__)
 308
 309     return alignBoundary;
 310
 311 #else
 312 #error "How does the '.align' assembler directive work on your architecture?"
 313 #endif
 314 }