Sweden-Number/tools/winebuild/utils.c

249 lines
6.0 KiB
C
Raw Normal View History

/*
* Small utility functions for winebuild
*
* Copyright 2000 Alexandre Julliard
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "config.h"
#include <ctype.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "build.h"
void *xmalloc (size_t size)
{
void *res;
res = malloc (size ? size : 1);
if (res == NULL)
{
fprintf (stderr, "Virtual memory exhausted.\n");
exit (1);
}
return res;
}
void *xrealloc (void *ptr, size_t size)
{
void *res = realloc (ptr, size);
if (res == NULL)
{
fprintf (stderr, "Virtual memory exhausted.\n");
exit (1);
}
return res;
}
char *xstrdup( const char *str )
{
char *res = strdup( str );
if (!res)
{
fprintf (stderr, "Virtual memory exhausted.\n");
exit (1);
}
return res;
}
char *strupper(char *s)
{
char *p;
for (p = s; *p; p++) *p = toupper(*p);
return s;
}
void fatal_error( const char *msg, ... )
{
va_list valist;
va_start( valist, msg );
if (input_file_name)
{
fprintf( stderr, "%s:", input_file_name );
if (current_line)
fprintf( stderr, "%d:", current_line );
fputc( ' ', stderr );
}
vfprintf( stderr, msg, valist );
va_end( valist );
exit(1);
}
void fatal_perror( const char *msg, ... )
{
va_list valist;
va_start( valist, msg );
if (input_file_name)
{
fprintf( stderr, "%s:", input_file_name );
if (current_line)
fprintf( stderr, "%d:", current_line );
fputc( ' ', stderr );
}
vfprintf( stderr, msg, valist );
perror( " " );
va_end( valist );
exit(1);
}
void warning( const char *msg, ... )
{
va_list valist;
va_start( valist, msg );
if (input_file_name)
{
fprintf( stderr, "%s:", input_file_name );
if (current_line)
fprintf( stderr, "%d:", current_line );
fputc( ' ', stderr );
}
fprintf( stderr, "warning: " );
vfprintf( stderr, msg, valist );
va_end( valist );
}
/* output a standard header for generated files */
void output_standard_file_header( FILE *outfile )
{
fprintf( outfile, "/* File generated automatically from %s; do not edit! */\n",
input_file_name );
fprintf( outfile,
"/* This file can be copied, modified and distributed without restriction. */\n\n" );
}
/* dump a byte stream into the assembly code */
void dump_bytes( FILE *outfile, const unsigned char *data, int len,
const char *label, int constant )
{
int i;
fprintf( outfile, "\nstatic %sunsigned char %s[%d] = {",
constant ? "const " : "", label, len );
for (i = 0; i < len; i++)
{
if (!(i & 7)) fprintf( outfile, "\n " );
fprintf( outfile, "0x%02x", *data++ );
if (i < len - 1) fprintf( outfile, "," );
}
fprintf( outfile, "\n};\n" );
}
/*****************************************************************
* Function: get_alignment
*
* Description:
* According to the info page for gas, the .align directive behaves
* differently on different systems. On some architectures, the
* argument of a .align directive is the number of bytes to pad to, so
* to align on an 8-byte boundary you'd say
* .align 8
* On other systems, the argument is "the number of low-order zero bits
* that the location counter must have after advancement." So to
* align on an 8-byte boundary you'd say
* .align 3
*
* The reason gas is written this way is that it's trying to mimick
* native assemblers for the various architectures it runs on. gas
* provides other directives that work consistantly across
* architectures, but of course we want to work on all arches with or
* without gas. Hence this function.
*
*
* Parameters:
* alignBoundary -- the number of bytes to align to.
* If we're on an architecture where
* the assembler requires a 'number
* of low-order zero bits' as a
* .align argument, then this number
* must be a power of 2.
*
*/
int get_alignment(int alignBoundary)
{
#ifdef __PPC__
int n = 0;
switch(alignBoundary)
{
case 2:
n = 1;
break;
case 4:
n = 2;
break;
case 8:
n = 3;
break;
case 16:
n = 4;
break;
case 32:
n = 5;
break;
case 64:
n = 6;
break;
case 128:
n = 7;
break;
case 256:
n = 8;
break;
case 512:
n = 9;
break;
case 1024:
n = 10;
break;
case 2048:
n = 11;
break;
case 4096:
n = 12;
break;
case 8192:
n = 13;
break;
case 16384:
n = 14;
break;
case 32768:
n = 15;
break;
case 65536:
n = 16;
break;
default:
fatal_error("Alignment to %d-byte boundary not supported on this architecture.\n",
alignBoundary);
}
return n;
#elif defined(__i386__) || defined(__sparc__)
return alignBoundary;
#else
#error "How does the '.align' assembler directive work on your architecture?"
#endif
}