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
  23 #include <ctype.h>
  24 #include <stdarg.h>
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #include <string.h>
  28
  29 #include "build.h"
  30
  31 void *xmalloc (size_t size)
  32 {
  33     void *res;
  34
  35     res = malloc (size ? size : 1);
  36     if (res == NULL)
  37     {
  38         fprintf (stderr, "Virtual memory exhausted.\n");
  39         exit (1);
  40     }
  41     return res;
  42 }
  43
  44 void *xrealloc (void *ptr, size_t size)
  45 {
  46     void *res = realloc (ptr, size);
  47     if (res == NULL)
  48     {
  49         fprintf (stderr, "Virtual memory exhausted.\n");
  50         exit (1);
  51     }
  52     return res;
  53 }
  54
  55 char *xstrdup( const char *str )
  56 {
  57     char *res = strdup( str );
  58     if (!res)
  59     {
  60         fprintf (stderr, "Virtual memory exhausted.\n");
  61         exit (1);
  62     }
  63     return res;
  64 }
  65
  66 char *strupper(char *s)
  67 {
  68     char *p;
  69     for (p = s; *p; p++) *p = toupper(*p);
  70     return s;
  71 }
  72
  73 void fatal_error( const char *msg, ... )
  74 {
  75     va_list valist;
  76     va_start( valist, msg );
  77     if (input_file_name)
  78     {
  79         fprintf( stderr, "%s:", input_file_name );
  80         if (current_line)
  81             fprintf( stderr, "%d:", current_line );
  82         fputc( ' ', stderr );
  83     }
  84     vfprintf( stderr, msg, valist );
  85     va_end( valist );
  86     exit(1);
  87 }
  88
  89 void fatal_perror( const char *msg, ... )
  90 {
  91     va_list valist;
  92     va_start( valist, msg );
  93     if (input_file_name)
  94     {
  95         fprintf( stderr, "%s:", input_file_name );
  96         if (current_line)
  97             fprintf( stderr, "%d:", current_line );
  98         fputc( ' ', stderr );
  99     }
 100     vfprintf( stderr, msg, valist );
 101     perror( " " );
 102     va_end( valist );
 103     exit(1);
 104 }
 105
 106 void warning( const char *msg, ... )
 107 {
 108     va_list valist;
 109
 110     if (!display_warnings) return;
 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     fprintf( stderr, "warning: " );
 120     vfprintf( stderr, msg, valist );
 121     va_end( valist );
 122 }
 123
 124 /* output a standard header for generated files */
 125 void output_standard_file_header( FILE *outfile )
 126 {
 127     fprintf( outfile, "/* File generated automatically from %s; do not edit! */\n",
 128              input_file_name );
 129     fprintf( outfile,
 130              "/* This file can be copied, modified and distributed without restriction. */\n\n" );
 131 }
 132
 133 /* dump a byte stream into the assembly code */
 134 void dump_bytes( FILE *outfile, const unsigned char *data, int len,
 135                  const char *label, int constant )
 136 {
 137     int i;
 138
 139     fprintf( outfile, "\nstatic %sunsigned char %s[%d] = {",
 140              constant ? "const " : "", label, len );
 141     for (i = 0; i < len; i++)
 142     {
 143         if (!(i & 7)) fprintf( outfile, "\n  " );
 144         fprintf( outfile, "0x%02x", *data++ );
 145         if (i < len - 1) fprintf( outfile, "," );
 146     }
 147     fprintf( outfile, "\n};\n" );
 148 }
 149
 150 /*****************************************************************
 151  *  Function:    get_alignment
 152  *
 153  *  Description:
 154  *    According to the info page for gas, the .align directive behaves
 155  * differently on different systems.  On some architectures, the
 156  * argument of a .align directive is the number of bytes to pad to, so
 157  * to align on an 8-byte boundary you'd say
 158  *     .align 8
 159  * On other systems, the argument is "the number of low-order zero bits
 160  * that the location counter must have after advancement."  So to
 161  * align on an 8-byte boundary you'd say
 162  *     .align 3
 163  *
 164  * The reason gas is written this way is that it's trying to mimick
 165  * native assemblers for the various architectures it runs on.  gas
 166  * provides other directives that work consistantly across
 167  * architectures, but of course we want to work on all arches with or
 168  * without gas.  Hence this function.
 169  *
 170  *
 171  *  Parameters:
 172  *                alignBoundary  --  the number of bytes to align to.
 173  *                                   If we're on an architecture where
 174  *                                   the assembler requires a 'number
 175  *                                   of low-order zero bits' as a
 176  *                                   .align argument, then this number
 177  *                                   must be a power of 2.
 178  *
 179  */
 180 int get_alignment(int alignBoundary)
 181 {
 182 #ifdef __PPC__
 183
 184     int n = 0;
 185
 186     switch(alignBoundary)
 187     {
 188     case 2:
 189         n = 1;
 190         break;
 191     case 4:
 192         n = 2;
 193         break;
 194     case 8:
 195         n = 3;
 196         break;
 197     case 16:
 198         n = 4;
 199         break;
 200     case 32:
 201         n = 5;
 202         break;
 203     case 64:
 204         n = 6;
 205         break;
 206     case 128:
 207         n = 7;
 208         break;
 209     case 256:
 210         n = 8;
 211         break;
 212     case 512:
 213         n = 9;
 214         break;
 215     case 1024:
 216         n = 10;
 217         break;
 218     case 2048:
 219         n = 11;
 220         break;
 221     case 4096:
 222         n = 12;
 223         break;
 224     case 8192:
 225         n = 13;
 226         break;
 227     case 16384:
 228         n = 14;
 229         break;
 230     case 32768:
 231         n = 15;
 232         break;
 233     case 65536:
 234         n = 16;
 235         break;
 236     default:
 237         fatal_error("Alignment to %d-byte boundary not supported on this architecture.\n",
 238                     alignBoundary);
 239     }
 240     return n;
 241
 242 #elif defined(__i386__) || defined(__sparc__)
 243
 244     return alignBoundary;
 245
 246 #else
 247 #error "How does the '.align' assembler directive work on your architecture?"
 248 #endif
 249 }