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     else fprintf( stderr, "winebuild: " );
  86     vfprintf( stderr, msg, valist );
  87     va_end( valist );
  88     exit(1);
  89 }
  90
  91 void fatal_perror( const char *msg, ... )
  92 {
  93     va_list valist;
  94     va_start( valist, msg );
  95     if (input_file_name)
  96     {
  97         fprintf( stderr, "%s:", input_file_name );
  98         if (current_line)
  99             fprintf( stderr, "%d:", current_line );
 100         fputc( ' ', stderr );
 101     }
 102     vfprintf( stderr, msg, valist );
 103     perror( " " );
 104     va_end( valist );
 105     exit(1);
 106 }
 107
 108 void error( const char *msg, ... )
 109 {
 110     va_list valist;
 111     va_start( valist, msg );
 112     if (input_file_name)
 113     {
 114         fprintf( stderr, "%s:", input_file_name );
 115         if (current_line)
 116             fprintf( stderr, "%d:", current_line );
 117         fputc( ' ', stderr );
 118     }
 119     vfprintf( stderr, msg, valist );
 120     va_end( valist );
 121     nb_errors++;
 122 }
 123
 124 void warning( const char *msg, ... )
 125 {
 126     va_list valist;
 127
 128     if (!display_warnings) return;
 129     va_start( valist, msg );
 130     if (input_file_name)
 131     {
 132         fprintf( stderr, "%s:", input_file_name );
 133         if (current_line)
 134             fprintf( stderr, "%d:", current_line );
 135         fputc( ' ', stderr );
 136     }
 137     fprintf( stderr, "warning: " );
 138     vfprintf( stderr, msg, valist );
 139     va_end( valist );
 140 }
 141
 142 /* output a standard header for generated files */
 143 void output_standard_file_header( FILE *outfile )
 144 {
 145     if (input_file_name)
 146         fprintf( outfile, "/* File generated automatically from %s; do not edit! */\n",
 147                  input_file_name );
 148     else
 149         fprintf( outfile, "/* File generated automatically; do not edit! */\n" );
 150     fprintf( outfile,
 151              "/* This file can be copied, modified and distributed without restriction. */\n\n" );
 152 }
 153
 154 /* dump a byte stream into the assembly code */
 155 void dump_bytes( FILE *outfile, const unsigned char *data, int len,
 156                  const char *label, int constant )
 157 {
 158     int i;
 159
 160     fprintf( outfile, "\nstatic %sunsigned char %s[%d] = {",
 161              constant ? "const " : "", label, len );
 162     for (i = 0; i < len; i++)
 163     {
 164         if (!(i & 7)) fprintf( outfile, "\n  " );
 165         fprintf( outfile, "0x%02x", *data++ );
 166         if (i < len - 1) fprintf( outfile, "," );
 167     }
 168     fprintf( outfile, "\n};\n" );
 169 }
 170
 171
 172 /*******************************************************************
 173  *         open_input_file
 174  *
 175  * Open a file in the given srcdir and set the input_file_name global variable.
 176  */
 177 FILE *open_input_file( const char *srcdir, const char *name )
 178 {
 179     char *fullname;
 180     FILE *file = fopen( name, "r" );
 181
 182     if (!file && srcdir)
 183     {
 184         fullname = xmalloc( strlen(srcdir) + strlen(name) + 2 );
 185         strcpy( fullname, srcdir );
 186         strcat( fullname, "/" );
 187         strcat( fullname, name );
 188         file = fopen( fullname, "r" );
 189     }
 190     else fullname = xstrdup( name );
 191
 192     if (!file) fatal_error( "Cannot open file '%s'\n", fullname );
 193     input_file_name = fullname;
 194     current_line = 1;
 195     return file;
 196 }
 197
 198
 199 /*******************************************************************
 200  *         close_input_file
 201  *
 202  * Close the current input file (must have been opened with open_input_file).
 203  */
 204 void close_input_file( FILE *file )
 205 {
 206     fclose( file );
 207     free( input_file_name );
 208     input_file_name = NULL;
 209     current_line = 0;
 210 }
 211
 212
 213 /*******************************************************************
 214  *         remove_stdcall_decoration
 215  *
 216  * Remove a possible @xx suffix from a function name.
 217  * Return the numerical value of the suffix, or -1 if none.
 218  */
 219 int remove_stdcall_decoration( char *name )
 220 {
 221     char *p, *end = strrchr( name, '@' );
 222     if (!end || !end[1] || end == name) return -1;
 223     /* make sure all the rest is digits */
 224     for (p = end + 1; *p; p++) if (!isdigit(*p)) return -1;
 225     *end = 0;
 226     return atoi( end + 1 );
 227 }
 228
 229
 230 /*******************************************************************
 231  *         alloc_dll_spec
 232  *
 233  * Create a new dll spec file descriptor
 234  */
 235 DLLSPEC *alloc_dll_spec(void)
 236 {
 237     DLLSPEC *spec;
 238
 239     spec = xmalloc( sizeof(*spec) );
 240     spec->file_name          = NULL;
 241     spec->dll_name           = NULL;
 242     spec->owner_name         = NULL;
 243     spec->init_func          = NULL;
 244     spec->type               = SPEC_WIN32;
 245     spec->base               = MAX_ORDINALS;
 246     spec->limit              = 0;
 247     spec->stack_size         = 0;
 248     spec->heap_size          = 0;
 249     spec->nb_entry_points    = 0;
 250     spec->alloc_entry_points = 0;
 251     spec->nb_names           = 0;
 252     spec->nb_resources       = 0;
 253     spec->characteristics    = 0;
 254     spec->subsystem          = 0;
 255     spec->subsystem_major    = 4;
 256     spec->subsystem_minor    = 0;
 257     spec->entry_points       = NULL;
 258     spec->names              = NULL;
 259     spec->ordinals           = NULL;
 260     spec->resources          = NULL;
 261     return spec;
 262 }
 263
 264
 265 /*******************************************************************
 266  *         free_dll_spec
 267  *
 268  * Free dll spec file descriptor
 269  */
 270 void free_dll_spec( DLLSPEC *spec )
 271 {
 272     int i;
 273
 274     for (i = 0; i < spec->nb_entry_points; i++)
 275     {
 276         ORDDEF *odp = &spec->entry_points[i];
 277         free( odp->name );
 278         free( odp->export_name );
 279         free( odp->link_name );
 280     }
 281     free( spec->file_name );
 282     free( spec->dll_name );
 283     free( spec->owner_name );
 284     free( spec->init_func );
 285     free( spec->entry_points );
 286     free( spec->names );
 287     free( spec->ordinals );
 288     free( spec->resources );
 289     free( spec );
 290 }
 291
 292
 293 /*******************************************************************
 294  *         make_c_identifier
 295  *
 296  * Map a string to a valid C identifier.
 297  */
 298 const char *make_c_identifier( const char *str )
 299 {
 300     static char buffer[256];
 301     char *p;
 302
 303     for (p = buffer; *str && p < buffer+sizeof(buffer)-1; p++, str++)
 304     {
 305         if (isalnum(*str)) *p = *str;
 306         else *p = '_';
 307     }
 308     *p = 0;
 309     return buffer;
 310 }
 311
 312
 313 /*****************************************************************
 314  *  Function:    get_alignment
 315  *
 316  *  Description:
 317  *    According to the info page for gas, the .align directive behaves
 318  * differently on different systems.  On some architectures, the
 319  * argument of a .align directive is the number of bytes to pad to, so
 320  * to align on an 8-byte boundary you'd say
 321  *     .align 8
 322  * On other systems, the argument is "the number of low-order zero bits
 323  * that the location counter must have after advancement."  So to
 324  * align on an 8-byte boundary you'd say
 325  *     .align 3
 326  *
 327  * The reason gas is written this way is that it's trying to mimick
 328  * native assemblers for the various architectures it runs on.  gas
 329  * provides other directives that work consistantly across
 330  * architectures, but of course we want to work on all arches with or
 331  * without gas.  Hence this function.
 332  *
 333  *
 334  *  Parameters:
 335  *                alignBoundary  --  the number of bytes to align to.
 336  *                                   If we're on an architecture where
 337  *                                   the assembler requires a 'number
 338  *                                   of low-order zero bits' as a
 339  *                                   .align argument, then this number
 340  *                                   must be a power of 2.
 341  *
 342  */
 343 int get_alignment(int alignBoundary)
 344 {
 345 #if defined(__powerpc__) || defined(__ALPHA__)
 346
 347     int n = 0;
 348
 349     switch(alignBoundary)
 350     {
 351     case 2:
 352         n = 1;
 353         break;
 354     case 4:
 355         n = 2;
 356         break;
 357     case 8:
 358         n = 3;
 359         break;
 360     case 16:
 361         n = 4;
 362         break;
 363     case 32:
 364         n = 5;
 365         break;
 366     case 64:
 367         n = 6;
 368         break;
 369     case 128:
 370         n = 7;
 371         break;
 372     case 256:
 373         n = 8;
 374         break;
 375     case 512:
 376         n = 9;
 377         break;
 378     case 1024:
 379         n = 10;
 380         break;
 381     case 2048:
 382         n = 11;
 383         break;
 384     case 4096:
 385         n = 12;
 386         break;
 387     case 8192:
 388         n = 13;
 389         break;
 390     case 16384:
 391         n = 14;
 392         break;
 393     case 32768:
 394         n = 15;
 395         break;
 396     case 65536:
 397         n = 16;
 398         break;
 399     default:
 400         fatal_error("Alignment to %d-byte boundary not supported on this architecture.\n",
 401                     alignBoundary);
 402     }
 403     return n;
 404
 405 #elif defined(__i386__) || defined(__sparc__)
 406
 407     return alignBoundary;
 408
 409 #else
 410 #error "How does the '.align' assembler directive work on your architecture?"
 411 #endif
 412 }