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 (size && 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 int strendswith(const char* str, const char* end)
  75 {
  76     int l = strlen(str);
  77     int m = strlen(end);
  78     return l >= m && strcmp(str + l - m, end) == 0;
  79 }
  80
  81 void fatal_error( const char *msg, ... )
  82 {
  83     va_list valist;
  84     va_start( valist, msg );
  85     if (input_file_name)
  86     {
  87         fprintf( stderr, "%s:", input_file_name );
  88         if (current_line)
  89             fprintf( stderr, "%d:", current_line );
  90         fputc( ' ', stderr );
  91     }
  92     else fprintf( stderr, "winebuild: " );
  93     vfprintf( stderr, msg, valist );
  94     va_end( valist );
  95     exit(1);
  96 }
  97
  98 void fatal_perror( const char *msg, ... )
  99 {
 100     va_list valist;
 101     va_start( valist, msg );
 102     if (input_file_name)
 103     {
 104         fprintf( stderr, "%s:", input_file_name );
 105         if (current_line)
 106             fprintf( stderr, "%d:", current_line );
 107         fputc( ' ', stderr );
 108     }
 109     vfprintf( stderr, msg, valist );
 110     perror( " " );
 111     va_end( valist );
 112     exit(1);
 113 }
 114
 115 void error( const char *msg, ... )
 116 {
 117     va_list valist;
 118     va_start( valist, msg );
 119     if (input_file_name)
 120     {
 121         fprintf( stderr, "%s:", input_file_name );
 122         if (current_line)
 123             fprintf( stderr, "%d:", current_line );
 124         fputc( ' ', stderr );
 125     }
 126     vfprintf( stderr, msg, valist );
 127     va_end( valist );
 128     nb_errors++;
 129 }
 130
 131 void warning( const char *msg, ... )
 132 {
 133     va_list valist;
 134
 135     if (!display_warnings) return;
 136     va_start( valist, msg );
 137     if (input_file_name)
 138     {
 139         fprintf( stderr, "%s:", input_file_name );
 140         if (current_line)
 141             fprintf( stderr, "%d:", current_line );
 142         fputc( ' ', stderr );
 143     }
 144     fprintf( stderr, "warning: " );
 145     vfprintf( stderr, msg, valist );
 146     va_end( valist );
 147 }
 148
 149 /* output a standard header for generated files */
 150 void output_standard_file_header( FILE *outfile )
 151 {
 152     if (spec_file_name)
 153         fprintf( outfile, "/* File generated automatically from %s; do not edit! */\n",
 154                  spec_file_name );
 155     else
 156         fprintf( outfile, "/* File generated automatically; do not edit! */\n" );
 157     fprintf( outfile,
 158              "/* This file can be copied, modified and distributed without restriction. */\n\n" );
 159 }
 160
 161 /* dump a byte stream into the assembly code */
 162 void dump_bytes( FILE *outfile, const unsigned char *data, int len,
 163                  const char *label, int constant )
 164 {
 165     int i;
 166
 167     fprintf( outfile, "\nstatic %sunsigned char %s[%d] = {",
 168              constant ? "const " : "", label, len );
 169     for (i = 0; i < len; i++)
 170     {
 171         if (!(i & 7)) fprintf( outfile, "\n  " );
 172         fprintf( outfile, "0x%02x", *data++ );
 173         if (i < len - 1) fprintf( outfile, "," );
 174     }
 175     fprintf( outfile, "\n};\n" );
 176 }
 177
 178
 179 /*******************************************************************
 180  *         open_input_file
 181  *
 182  * Open a file in the given srcdir and set the input_file_name global variable.
 183  */
 184 FILE *open_input_file( const char *srcdir, const char *name )
 185 {
 186     char *fullname;
 187     FILE *file = fopen( name, "r" );
 188
 189     if (!file && srcdir)
 190     {
 191         fullname = xmalloc( strlen(srcdir) + strlen(name) + 2 );
 192         strcpy( fullname, srcdir );
 193         strcat( fullname, "/" );
 194         strcat( fullname, name );
 195         file = fopen( fullname, "r" );
 196     }
 197     else fullname = xstrdup( name );
 198
 199     if (!file) fatal_error( "Cannot open file '%s'\n", fullname );
 200     input_file_name = fullname;
 201     current_line = 1;
 202     return file;
 203 }
 204
 205
 206 /*******************************************************************
 207  *         close_input_file
 208  *
 209  * Close the current input file (must have been opened with open_input_file).
 210  */
 211 void close_input_file( FILE *file )
 212 {
 213     fclose( file );
 214     free( input_file_name );
 215     input_file_name = NULL;
 216     current_line = 0;
 217 }
 218
 219
 220 /*******************************************************************
 221  *         remove_stdcall_decoration
 222  *
 223  * Remove a possible @xx suffix from a function name.
 224  * Return the numerical value of the suffix, or -1 if none.
 225  */
 226 int remove_stdcall_decoration( char *name )
 227 {
 228     char *p, *end = strrchr( name, '@' );
 229     if (!end || !end[1] || end == name) return -1;
 230     /* make sure all the rest is digits */
 231     for (p = end + 1; *p; p++) if (!isdigit(*p)) return -1;
 232     *end = 0;
 233     return atoi( end + 1 );
 234 }
 235
 236
 237 /*******************************************************************
 238  *         alloc_dll_spec
 239  *
 240  * Create a new dll spec file descriptor
 241  */
 242 DLLSPEC *alloc_dll_spec(void)
 243 {
 244     DLLSPEC *spec;
 245
 246     spec = xmalloc( sizeof(*spec) );
 247     spec->file_name          = NULL;
 248     spec->dll_name           = NULL;
 249     spec->owner_name         = NULL;
 250     spec->init_func          = NULL;
 251     spec->type               = SPEC_WIN32;
 252     spec->base               = MAX_ORDINALS;
 253     spec->limit              = 0;
 254     spec->stack_size         = 0;
 255     spec->heap_size          = 0;
 256     spec->nb_entry_points    = 0;
 257     spec->alloc_entry_points = 0;
 258     spec->nb_names           = 0;
 259     spec->nb_resources       = 0;
 260     spec->characteristics    = 0;
 261     spec->subsystem          = 0;
 262     spec->subsystem_major    = 4;
 263     spec->subsystem_minor    = 0;
 264     spec->entry_points       = NULL;
 265     spec->names              = NULL;
 266     spec->ordinals           = NULL;
 267     spec->resources          = NULL;
 268     return spec;
 269 }
 270
 271
 272 /*******************************************************************
 273  *         free_dll_spec
 274  *
 275  * Free dll spec file descriptor
 276  */
 277 void free_dll_spec( DLLSPEC *spec )
 278 {
 279     int i;
 280
 281     for (i = 0; i < spec->nb_entry_points; i++)
 282     {
 283         ORDDEF *odp = &spec->entry_points[i];
 284         free( odp->name );
 285         free( odp->export_name );
 286         free( odp->link_name );
 287     }
 288     free( spec->file_name );
 289     free( spec->dll_name );
 290     free( spec->owner_name );
 291     free( spec->init_func );
 292     free( spec->entry_points );
 293     free( spec->names );
 294     free( spec->ordinals );
 295     free( spec->resources );
 296     free( spec );
 297 }
 298
 299
 300 /*******************************************************************
 301  *         make_c_identifier
 302  *
 303  * Map a string to a valid C identifier.
 304  */
 305 const char *make_c_identifier( const char *str )
 306 {
 307     static char buffer[256];
 308     char *p;
 309
 310     for (p = buffer; *str && p < buffer+sizeof(buffer)-1; p++, str++)
 311     {
 312         if (isalnum(*str)) *p = *str;
 313         else *p = '_';
 314     }
 315     *p = 0;
 316     return buffer;
 317 }
 318
 319
 320 /*****************************************************************
 321  *  Function:    get_alignment
 322  *
 323  *  Description:
 324  *    According to the info page for gas, the .align directive behaves
 325  * differently on different systems.  On some architectures, the
 326  * argument of a .align directive is the number of bytes to pad to, so
 327  * to align on an 8-byte boundary you'd say
 328  *     .align 8
 329  * On other systems, the argument is "the number of low-order zero bits
 330  * that the location counter must have after advancement."  So to
 331  * align on an 8-byte boundary you'd say
 332  *     .align 3
 333  *
 334  * The reason gas is written this way is that it's trying to mimick
 335  * native assemblers for the various architectures it runs on.  gas
 336  * provides other directives that work consistantly across
 337  * architectures, but of course we want to work on all arches with or
 338  * without gas.  Hence this function.
 339  *
 340  *
 341  *  Parameters:
 342  *                alignBoundary  --  the number of bytes to align to.
 343  *                                   If we're on an architecture where
 344  *                                   the assembler requires a 'number
 345  *                                   of low-order zero bits' as a
 346  *                                   .align argument, then this number
 347  *                                   must be a power of 2.
 348  *
 349  */
 350 int get_alignment(int alignBoundary)
 351 {
 352 #if defined(__powerpc__) || defined(__ALPHA__)
 353
 354     int n = 0;
 355
 356     switch(alignBoundary)
 357     {
 358     case 2:
 359         n = 1;
 360         break;
 361     case 4:
 362         n = 2;
 363         break;
 364     case 8:
 365         n = 3;
 366         break;
 367     case 16:
 368         n = 4;
 369         break;
 370     case 32:
 371         n = 5;
 372         break;
 373     case 64:
 374         n = 6;
 375         break;
 376     case 128:
 377         n = 7;
 378         break;
 379     case 256:
 380         n = 8;
 381         break;
 382     case 512:
 383         n = 9;
 384         break;
 385     case 1024:
 386         n = 10;
 387         break;
 388     case 2048:
 389         n = 11;
 390         break;
 391     case 4096:
 392         n = 12;
 393         break;
 394     case 8192:
 395         n = 13;
 396         break;
 397     case 16384:
 398         n = 14;
 399         break;
 400     case 32768:
 401         n = 15;
 402         break;
 403     case 65536:
 404         n = 16;
 405         break;
 406     default:
 407         fatal_error("Alignment to %d-byte boundary not supported on this architecture.\n",
 408                     alignBoundary);
 409     }
 410     return n;
 411
 412 #elif defined(__i386__) || defined(__sparc__)
 413
 414     return alignBoundary;
 415
 416 #else
 417 #error "How does the '.align' assembler directive work on your architecture?"
 418 #endif
 419 }