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/* djgpp2.c --
This file is part of the lzop file compressor.
Copyright (C) 1996-2010 Markus Franz Xaver Johannes Oberhumer
All Rights Reserved.
lzop and the LZO library are free software; you can redistribute them
and/or modify them under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of
the License, or (at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; see the file COPYING.
If not, write to the Free Software Foundation, Inc.,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
Markus F.X.J. Oberhumer
<markus@oberhumer.com>
http://www.oberhumer.com/opensource/lzop/
*/
#include "conf.h"
#if defined(__DJGPP__)
#include <dpmi.h>
#include <go32.h>
/*************************************************************************
// init
**************************************************************************/
/* Minimum stack */
unsigned _stklen = 65536;
/* This is called before 'main'. */
static void __attribute__((__constructor__))
djgpp_startup (void)
{
const char *s;
static char lfn_y[] = "LFN=y";
static char lfn_n[] = "LFN=n";
s = getenv("LZOP_LFN");
if (s == NULL || (s[0] != 'n' && s[0] != 'N'))
putenv(lfn_y);
else
{
putenv(lfn_n);
_crt0_startup_flags |= _CRT0_FLAG_NO_LFN;
}
_djstat_flags |= _STAT_INODE;
_djstat_flags |= _STAT_EXEC_EXT;
_djstat_flags |= _STAT_EXEC_MAGIC;
_djstat_flags |= _STAT_DIRSIZE;
_djstat_flags |= _STAT_ROOT_TIME;
}
/* No need for loading the environment. */
void __crt0_load_environment_file(char *app_name) { UNUSED(app_name); }
/* No need for this function */
int _is_executable(const char *filename, int fhandle, const char *extension)
{
UNUSED(filename);
UNUSED(fhandle);
UNUSED(extension);
return 0;
}
/*************************************************************************
// info
**************************************************************************/
#if 0
typedef struct {
unsigned long largest_available_free_block_in_bytes;
unsigned long maximum_unlocked_page_allocation_in_pages;
unsigned long maximum_locked_page_allocation_in_pages;
unsigned long linear_address_space_size_in_pages;
unsigned long total_number_of_unlocked_pages;
unsigned long total_number_of_free_pages;
unsigned long total_number_of_physical_pages;
unsigned long free_linear_address_space_in_pages;
unsigned long size_of_paging_file_partition_in_pages;
unsigned long reserved[3];
} __dpmi_free_mem_info;
typedef struct {
unsigned long available_memory;
unsigned long available_pages;
unsigned long available_lockable_pages;
unsigned long linear_space;
unsigned long unlocked_pages;
unsigned long available_physical_pages;
unsigned long total_physical_pages;
unsigned long free_linear_space;
unsigned long max_pages_in_paging_file;
unsigned long reserved[3];
} _go32_dpmi_meminfo;
#endif
static void meminfo(void)
{
__dpmi_free_mem_info info;
const unsigned long err = (unsigned long) -1;
unsigned long ps = 0;
unsigned long k;
if (__dpmi_get_page_size(&ps) != 0 || ps <= 0)
return;
if (__dpmi_get_free_memory_information(&info) != 0)
return;
#if 0
k = info.largest_available_free_block_in_bytes;
if (k == err)
{
k = info.maximum_unlocked_page_allocation_in_pages;
if (k != err)
k *= ps;
else
k = info.largest_available_free_block_in_bytes;
}
#endif
#if 0
k = info.total_number_of_physical_pages;
k = info.total_number_of_unlocked_pages;
#endif
k = info.total_number_of_free_pages;
if (k != err)
{
k = (k * ps) / 1024;
con_fprintf(con_term,"DPMI physical memory available: %6ld kB\n",k);
}
k = info.maximum_unlocked_page_allocation_in_pages;
if (k != err)
{
k = (k * ps) / 1024;
con_fprintf(con_term,"DPMI virtual memory available: %6ld kB\n",k);
}
con_fprintf(con_term,"\n");
}
void sysinfo_djgpp(void)
{
meminfo();
if (_USE_LFN)
con_fprintf(con_term,"Long filenames are supported.\n");
else
con_fprintf(con_term,"Long filenames are not supported.\n");
con_fprintf(con_term,"\n");
}
#endif /* __DJGPP__ */
/*
vi:ts=4:et
*/
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