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 error( const char *msg, ... )
 108 {
 109     va_list valist;
 110     va_start( valist, msg );
 111     if (input_file_name)
 112     {
 113         fprintf( stderr, "%s:", input_file_name );
 114         if (current_line)
 115             fprintf( stderr, "%d:", current_line );
 116         fputc( ' ', stderr );
 117     }
 118     vfprintf( stderr, msg, valist );
 119     va_end( valist );
 120     nb_errors++;
 121 }
 122
 123 void warning( const char *msg, ... )
 124 {
 125     va_list valist;
 126
 127     if (!display_warnings) return;
 128     va_start( valist, msg );
 129     if (input_file_name)
 130     {
 131         fprintf( stderr, "%s:", input_file_name );
 132         if (current_line)
 133             fprintf( stderr, "%d:", current_line );
 134         fputc( ' ', stderr );
 135     }
 136     fprintf( stderr, "warning: " );
 137     vfprintf( stderr, msg, valist );
 138     va_end( valist );
 139 }
 140
 141 /* output a standard header for generated files */
 142 void output_standard_file_header( FILE *outfile )
 143 {
 144     if (input_file_name)
 145         fprintf( outfile, "/* File generated automatically from %s; do not edit! */\n",
 146                  input_file_name );
 147     else
 148         fprintf( outfile, "/* File generated automatically; do not edit! */\n" );
 149     fprintf( outfile,
 150              "/* This file can be copied, modified and distributed without restriction. */\n\n" );
 151 }
 152
 153 /* dump a byte stream into the assembly code */
 154 void dump_bytes( FILE *outfile, const unsigned char *data, int len,
 155                  const char *label, int constant )
 156 {
 157     int i;
 158
 159     fprintf( outfile, "\nstatic %sunsigned char %s[%d] = {",
 160              constant ? "const " : "", label, len );
 161     for (i = 0; i < len; i++)
 162     {
 163         if (!(i & 7)) fprintf( outfile, "\n  " );
 164         fprintf( outfile, "0x%02x", *data++ );
 165         if (i < len - 1) fprintf( outfile, "," );
 166     }
 167     fprintf( outfile, "\n};\n" );
 168 }
 169
 170
 171 /*******************************************************************
 172  *         open_input_file
 173  *
 174  * Open a file in the given srcdir and set the input_file_name global variable.
 175  */
 176 FILE *open_input_file( const char *srcdir, const char *name )
 177 {
 178     char *fullname;
 179     FILE *file = fopen( name, "r" );
 180
 181     if (!file && srcdir)
 182     {
 183         fullname = xmalloc( strlen(srcdir) + strlen(name) + 2 );
 184         strcpy( fullname, srcdir );
 185         strcat( fullname, "/" );
 186         strcat( fullname, name );
 187         file = fopen( fullname, "r" );
 188     }
 189     else fullname = xstrdup( name );
 190
 191     if (!file) fatal_error( "Cannot open file '%s'\n", fullname );
 192     input_file_name = fullname;
 193     current_line = 1;
 194     return file;
 195 }
 196
 197
 198 /*******************************************************************
 199  *         close_input_file
 200  *
 201  * Close the current input file (must have been opened with open_input_file).
 202  */
 203 void close_input_file( FILE *file )
 204 {
 205     fclose( file );
 206     free( input_file_name );
 207     input_file_name = NULL;
 208     current_line = 0;
 209 }
 210
 211
 212 /*******************************************************************
 213  *         make_c_identifier
 214  *
 215  * Map a string to a valid C identifier.
 216  */
 217 const char *make_c_identifier( const char *str )
 218 {
 219     static char buffer[256];
 220     char *p;
 221
 222     for (p = buffer; *str && p < buffer+sizeof(buffer)-1; p++, str++)
 223     {
 224         if (isalnum(*str)) *p = *str;
 225         else *p = '_';
 226     }
 227     *p = 0;
 228     return buffer;
 229 }
 230
 231
 232 /*****************************************************************
 233  *  Function:    get_alignment
 234  *
 235  *  Description:
 236  *    According to the info page for gas, the .align directive behaves
 237  * differently on different systems.  On some architectures, the
 238  * argument of a .align directive is the number of bytes to pad to, so
 239  * to align on an 8-byte boundary you'd say
 240  *     .align 8
 241  * On other systems, the argument is "the number of low-order zero bits
 242  * that the location counter must have after advancement."  So to
 243  * align on an 8-byte boundary you'd say
 244  *     .align 3
 245  *
 246  * The reason gas is written this way is that it's trying to mimick
 247  * native assemblers for the various architectures it runs on.  gas
 248  * provides other directives that work consistantly across
 249  * architectures, but of course we want to work on all arches with or
 250  * without gas.  Hence this function.
 251  *
 252  *
 253  *  Parameters:
 254  *                alignBoundary  --  the number of bytes to align to.
 255  *                                   If we're on an architecture where
 256  *                                   the assembler requires a 'number
 257  *                                   of low-order zero bits' as a
 258  *                                   .align argument, then this number
 259  *                                   must be a power of 2.
 260  *
 261  */
 262 int get_alignment(int alignBoundary)
 263 {
 264 #if defined(__powerpc__) || defined(__ALPHA__)
 265
 266     int n = 0;
 267
 268     switch(alignBoundary)
 269     {
 270     case 2:
 271         n = 1;
 272         break;
 273     case 4:
 274         n = 2;
 275         break;
 276     case 8:
 277         n = 3;
 278         break;
 279     case 16:
 280         n = 4;
 281         break;
 282     case 32:
 283         n = 5;
 284         break;
 285     case 64:
 286         n = 6;
 287         break;
 288     case 128:
 289         n = 7;
 290         break;
 291     case 256:
 292         n = 8;
 293         break;
 294     case 512:
 295         n = 9;
 296         break;
 297     case 1024:
 298         n = 10;
 299         break;
 300     case 2048:
 301         n = 11;
 302         break;
 303     case 4096:
 304         n = 12;
 305         break;
 306     case 8192:
 307         n = 13;
 308         break;
 309     case 16384:
 310         n = 14;
 311         break;
 312     case 32768:
 313         n = 15;
 314         break;
 315     case 65536:
 316         n = 16;
 317         break;
 318     default:
 319         fatal_error("Alignment to %d-byte boundary not supported on this architecture.\n",
 320                     alignBoundary);
 321     }
 322     return n;
 323
 324 #elif defined(__i386__) || defined(__sparc__)
 325
 326     return alignBoundary;
 327
 328 #else
 329 #error "How does the '.align' assembler directive work on your architecture?"
 330 #endif
 331 }