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 <assert.h>
  25 #include <ctype.h>
  26 #include <stdarg.h>
  27 #include <stdio.h>
  28 #include <stdlib.h>
  29 #include <string.h>
  30
  31 #include "build.h"
  32
  33 void *xmalloc (size_t size)
  34 {
  35     void *res;
  36
  37     res = malloc (size ? size : 1);
  38     if (res == NULL)
  39     {
  40         fprintf (stderr, "Virtual memory exhausted.\n");
  41         exit (1);
  42     }
  43     return res;
  44 }
  45
  46 void *xrealloc (void *ptr, size_t size)
  47 {
  48     void *res = realloc (ptr, size);
  49     if (size && res == NULL)
  50     {
  51         fprintf (stderr, "Virtual memory exhausted.\n");
  52         exit (1);
  53     }
  54     return res;
  55 }
  56
  57 char *xstrdup( const char *str )
  58 {
  59     char *res = strdup( str );
  60     if (!res)
  61     {
  62         fprintf (stderr, "Virtual memory exhausted.\n");
  63         exit (1);
  64     }
  65     return res;
  66 }
  67
  68 char *strupper(char *s)
  69 {
  70     char *p;
  71     for (p = s; *p; p++) *p = toupper(*p);
  72     return s;
  73 }
  74
  75 int strendswith(const char* str, const char* end)
  76 {
  77     int l = strlen(str);
  78     int m = strlen(end);
  79     return l >= m && strcmp(str + l - m, end) == 0;
  80 }
  81
  82 void fatal_error( const char *msg, ... )
  83 {
  84     va_list valist;
  85     va_start( valist, msg );
  86     if (input_file_name)
  87     {
  88         fprintf( stderr, "%s:", input_file_name );
  89         if (current_line)
  90             fprintf( stderr, "%d:", current_line );
  91         fputc( ' ', stderr );
  92     }
  93     else fprintf( stderr, "winebuild: " );
  94     vfprintf( stderr, msg, valist );
  95     va_end( valist );
  96     exit(1);
  97 }
  98
  99 void fatal_perror( const char *msg, ... )
 100 {
 101     va_list valist;
 102     va_start( valist, msg );
 103     if (input_file_name)
 104     {
 105         fprintf( stderr, "%s:", input_file_name );
 106         if (current_line)
 107             fprintf( stderr, "%d:", current_line );
 108         fputc( ' ', stderr );
 109     }
 110     vfprintf( stderr, msg, valist );
 111     perror( " " );
 112     va_end( valist );
 113     exit(1);
 114 }
 115
 116 void error( const char *msg, ... )
 117 {
 118     va_list valist;
 119     va_start( valist, msg );
 120     if (input_file_name)
 121     {
 122         fprintf( stderr, "%s:", input_file_name );
 123         if (current_line)
 124             fprintf( stderr, "%d:", current_line );
 125         fputc( ' ', stderr );
 126     }
 127     vfprintf( stderr, msg, valist );
 128     va_end( valist );
 129     nb_errors++;
 130 }
 131
 132 void warning( const char *msg, ... )
 133 {
 134     va_list valist;
 135
 136     if (!display_warnings) return;
 137     va_start( valist, msg );
 138     if (input_file_name)
 139     {
 140         fprintf( stderr, "%s:", input_file_name );
 141         if (current_line)
 142             fprintf( stderr, "%d:", current_line );
 143         fputc( ' ', stderr );
 144     }
 145     fprintf( stderr, "warning: " );
 146     vfprintf( stderr, msg, valist );
 147     va_end( valist );
 148 }
 149
 150 /* output a standard header for generated files */
 151 void output_standard_file_header( FILE *outfile )
 152 {
 153     if (spec_file_name)
 154         fprintf( outfile, "/* File generated automatically from %s; do not edit! */\n",
 155                  spec_file_name );
 156     else
 157         fprintf( outfile, "/* File generated automatically; do not edit! */\n" );
 158     fprintf( outfile,
 159              "/* This file can be copied, modified and distributed without restriction. */\n\n" );
 160 }
 161
 162 /* dump a byte stream into the assembly code */
 163 void dump_bytes( FILE *outfile, const unsigned char *data, int len,
 164                  const char *label, int constant )
 165 {
 166     int i;
 167
 168     fprintf( outfile, "\nstatic %sunsigned char %s[%d] = {",
 169              constant ? "const " : "", label, len );
 170     for (i = 0; i < len; i++)
 171     {
 172         if (!(i & 7)) fprintf( outfile, "\n  " );
 173         fprintf( outfile, "0x%02x", *data++ );
 174         if (i < len - 1) fprintf( outfile, "," );
 175     }
 176     fprintf( outfile, "\n};\n" );
 177 }
 178
 179
 180 /*******************************************************************
 181  *         open_input_file
 182  *
 183  * Open a file in the given srcdir and set the input_file_name global variable.
 184  */
 185 FILE *open_input_file( const char *srcdir, const char *name )
 186 {
 187     char *fullname;
 188     FILE *file = fopen( name, "r" );
 189
 190     if (!file && srcdir)
 191     {
 192         fullname = xmalloc( strlen(srcdir) + strlen(name) + 2 );
 193         strcpy( fullname, srcdir );
 194         strcat( fullname, "/" );
 195         strcat( fullname, name );
 196         file = fopen( fullname, "r" );
 197     }
 198     else fullname = xstrdup( name );
 199
 200     if (!file) fatal_error( "Cannot open file '%s'\n", fullname );
 201     input_file_name = fullname;
 202     current_line = 1;
 203     return file;
 204 }
 205
 206
 207 /*******************************************************************
 208  *         close_input_file
 209  *
 210  * Close the current input file (must have been opened with open_input_file).
 211  */
 212 void close_input_file( FILE *file )
 213 {
 214     fclose( file );
 215     free( input_file_name );
 216     input_file_name = NULL;
 217     current_line = 0;
 218 }
 219
 220
 221 /*******************************************************************
 222  *         remove_stdcall_decoration
 223  *
 224  * Remove a possible @xx suffix from a function name.
 225  * Return the numerical value of the suffix, or -1 if none.
 226  */
 227 int remove_stdcall_decoration( char *name )
 228 {
 229     char *p, *end = strrchr( name, '@' );
 230     if (!end || !end[1] || end == name) return -1;
 231     /* make sure all the rest is digits */
 232     for (p = end + 1; *p; p++) if (!isdigit(*p)) return -1;
 233     *end = 0;
 234     return atoi( end + 1 );
 235 }
 236
 237
 238 /*******************************************************************
 239  *         alloc_dll_spec
 240  *
 241  * Create a new dll spec file descriptor
 242  */
 243 DLLSPEC *alloc_dll_spec(void)
 244 {
 245     DLLSPEC *spec;
 246
 247     spec = xmalloc( sizeof(*spec) );
 248     spec->file_name          = NULL;
 249     spec->dll_name           = NULL;
 250     spec->owner_name         = NULL;
 251     spec->init_func          = NULL;
 252     spec->type               = SPEC_WIN32;
 253     spec->base               = MAX_ORDINALS;
 254     spec->limit              = 0;
 255     spec->stack_size         = 0;
 256     spec->heap_size          = 0;
 257     spec->nb_entry_points    = 0;
 258     spec->alloc_entry_points = 0;
 259     spec->nb_names           = 0;
 260     spec->nb_resources       = 0;
 261     spec->characteristics    = 0;
 262     spec->subsystem          = 0;
 263     spec->subsystem_major    = 4;
 264     spec->subsystem_minor    = 0;
 265     spec->entry_points       = NULL;
 266     spec->names              = NULL;
 267     spec->ordinals           = NULL;
 268     spec->resources          = NULL;
 269     return spec;
 270 }
 271
 272
 273 /*******************************************************************
 274  *         free_dll_spec
 275  *
 276  * Free dll spec file descriptor
 277  */
 278 void free_dll_spec( DLLSPEC *spec )
 279 {
 280     int i;
 281
 282     for (i = 0; i < spec->nb_entry_points; i++)
 283     {
 284         ORDDEF *odp = &spec->entry_points[i];
 285         free( odp->name );
 286         free( odp->export_name );
 287         free( odp->link_name );
 288     }
 289     free( spec->file_name );
 290     free( spec->dll_name );
 291     free( spec->owner_name );
 292     free( spec->init_func );
 293     free( spec->entry_points );
 294     free( spec->names );
 295     free( spec->ordinals );
 296     free( spec->resources );
 297     free( spec );
 298 }
 299
 300
 301 /*******************************************************************
 302  *         make_c_identifier
 303  *
 304  * Map a string to a valid C identifier.
 305  */
 306 const char *make_c_identifier( const char *str )
 307 {
 308     static char buffer[256];
 309     char *p;
 310
 311     for (p = buffer; *str && p < buffer+sizeof(buffer)-1; p++, str++)
 312     {
 313         if (isalnum(*str)) *p = *str;
 314         else *p = '_';
 315     }
 316     *p = 0;
 317     return buffer;
 318 }
 319
 320
 321 /*****************************************************************
 322  *  Function:    get_alignment
 323  *
 324  *  Description:
 325  *    According to the info page for gas, the .align directive behaves
 326  * differently on different systems.  On some architectures, the
 327  * argument of a .align directive is the number of bytes to pad to, so
 328  * to align on an 8-byte boundary you'd say
 329  *     .align 8
 330  * On other systems, the argument is "the number of low-order zero bits
 331  * that the location counter must have after advancement."  So to
 332  * align on an 8-byte boundary you'd say
 333  *     .align 3
 334  *
 335  * The reason gas is written this way is that it's trying to mimick
 336  * native assemblers for the various architectures it runs on.  gas
 337  * provides other directives that work consistantly across
 338  * architectures, but of course we want to work on all arches with or
 339  * without gas.  Hence this function.
 340  *
 341  *
 342  *  Parameters:
 343  *    align  --  the number of bytes to align to. Must be a power of 2.
 344  */
 345 unsigned int get_alignment(unsigned int align)
 346 {
 347     unsigned int n;
 348
 349     assert( !(align & (align - 1)) );
 350
 351     switch(target_cpu)
 352     {
 353     case CPU_x86:
 354     case CPU_SPARC:
 355         if (target_platform != PLATFORM_APPLE) return align;
 356         /* fall through */
 357     case CPU_POWERPC:
 358     case CPU_ALPHA:
 359         n = 0;
 360         while ((1 << n) != align) n++;
 361         return n;
 362     }
 363     /* unreached */
 364     assert(0);
 365     return 0;
 366 }
 367
 368 /* return the page size for the target CPU */
 369 unsigned int get_page_size(void)
 370 {
 371     switch(target_cpu)
 372     {
 373     case CPU_x86:     return 4096;
 374     case CPU_POWERPC: return 4096;
 375     case CPU_SPARC:   return 8192;
 376     case CPU_ALPHA:   return 8192;
 377     }
 378     /* unreached */
 379     assert(0);
 380     return 0;
 381 }
 382
 383 /* return the assembly name for a C symbol */
 384 const char *asm_name( const char *sym )
 385 {
 386     static char buffer[256];
 387
 388     switch (target_platform)
 389     {
 390     case PLATFORM_APPLE:
 391     case PLATFORM_WINDOWS:
 392         buffer[0] = '_';
 393         strcpy( buffer + 1, sym );
 394         return buffer;
 395     default:
 396         return sym;
 397     }
 398 }
 399
 400 /* return an assembly function declaration for a C function name */
 401 const char *func_declaration( const char *func )
 402 {
 403     static char buffer[256];
 404
 405     switch (target_platform)
 406     {
 407     case PLATFORM_APPLE:
 408         return "";
 409     case PLATFORM_WINDOWS:
 410         sprintf( buffer, ".def _%s; .scl 2; .type 32; .endef", func );
 411         break;
 412     case PLATFORM_SVR4:
 413         sprintf( buffer, ".type %s,2", func );
 414         break;
 415     default:
 416         sprintf( buffer, ".type %s,@function", func );
 417         break;
 418     }
 419     return buffer;
 420 }
 421
 422 /* return a size declaration for an assembly function */
 423 const char *func_size( const char *func )
 424 {
 425     static char buffer[256];
 426
 427     switch (target_platform)
 428     {
 429     case PLATFORM_APPLE:
 430     case PLATFORM_WINDOWS:
 431         return "";
 432     default:
 433         sprintf( buffer, ".size %s, .-%s", func, func );
 434         return buffer;
 435     }
 436 }
 437
 438 const char *get_asm_string_keyword(void)
 439 {
 440     switch (target_platform)
 441     {
 442     case PLATFORM_APPLE:
 443     case PLATFORM_SVR4:
 444         return ".asciz";
 445     default:
 446         return ".string";
 447     }
 448 }
 449
 450 const char *get_asm_short_keyword(void)
 451 {
 452     switch (target_platform)
 453     {
 454     case PLATFORM_SVR4: return ".half";
 455     default:            return ".short";
 456     }
 457 }