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Diffstat (limited to 'src/djgpp2.c')
| -rw-r--r-- | src/djgpp2.c | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/src/djgpp2.c b/src/djgpp2.c new file mode 100644 index 0000000..22dd993 --- /dev/null +++ b/src/djgpp2.c @@ -0,0 +1,181 @@ +/* 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 +*/ + |