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| /* Copyright (C) 1998 DJ Delorie, see COPYING.DJ for details */ |
| /* Copyright (C) 1996 DJ Delorie, see COPYING.DJ for details */ |
| /* Copyright (C) 1995 DJ Delorie, see COPYING.DJ for details */ |
| #ifndef __dj_include_crt0_h_ |
| #define __dj_include_crt0_h_ |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| #ifndef __dj_ENFORCE_ANSI_FREESTANDING |
| |
| #ifndef __STRICT_ANSI__ |
| |
| #ifndef _POSIX_SOURCE |
| |
| /*****************************************************************************\ |
| * crt0.h - specific to go32 v2.0 applications, controls command line |
| * argument creation. |
| \*****************************************************************************/ |
| |
| /*****************************************************************************\ |
| * If the application wishes to provide a wildcard expansion function, |
| * it should define a __crt0_glob_function function. It should return |
| * a list of the expanded values, or 0 if no expansion will occur. |
| * The startup code will free the returned pointer if it is nonzero. |
| * |
| * If no expander function is provided, wildcards will be expanded in |
| * the POSIX.1 style. To disable expansion, provide a __crt0_glob_function |
| * that always returns 0. |
| * |
| * Applications that do not rely on environment variables can provide an |
| * alternate version of __crt0_load_environment_file that does nothing. |
| * |
| * Applications that do not rely on arguments passed to main() can |
| * provide an alternate version of __crt0_setup_arguments() that does |
| * nothing. |
| \*****************************************************************************/ |
| |
| extern char *__dos_argv0; |
| extern int __crt0_argc; |
| extern char **__crt0_argv; |
| |
| void __crt0_load_environment_file(char *_app_name); |
| void __crt0_setup_arguments(void); |
| char **__crt0_glob_function(char *_arg); |
| |
| /*****************************************************************************\ |
| * |
| * To set any of these startup flags, add the following declaration to |
| * *your* source code: |
| * |
| * int _crt0_startup_flags = _CRT0_FLAG_* | _CRT0_FLAG_*; |
| * |
| * The default is all flags off. |
| * |
| \*****************************************************************************/ |
| |
| extern int _crt0_startup_flags; |
| |
| /* If set, argv[0] is left in whatever case it was. If not set, all |
| ** characters are mapped to lower case. Note that if the argv0 field in |
| ** the stubinfo structure is present, the case of that part of argv0 is not |
| ** affected. |
| */ |
| #define _CRT0_FLAG_PRESERVE_UPPER_CASE 0x0001 |
| |
| /* If set, reverse slashes (dos-style) are preserved in argv[0]. If not |
| ** set, all reverse slashes are replaced with unix-style slashes. |
| */ |
| #define _CRT0_FLAG_USE_DOS_SLASHES 0x0002 |
| |
| /* If set, the .EXE suffix is removed from the file name component of |
| ** argv[0]. If not set, the suffix remains. |
| */ |
| #define _CRT0_FLAG_DROP_EXE_SUFFIX 0x0004 |
| |
| /* If set, the drive specifier (ex: `C:') is removed from the beginning of |
| ** argv[0] (if present). If not set, the drive specifier remains. |
| */ |
| #define _CRT0_FLAG_DROP_DRIVE_SPECIFIER 0x0008 |
| |
| /* If set, response files (ex: @gcc.rf) are not expanded. If not set, the |
| ** contents of the response files are used to create arguments. Note that |
| ** if the file does not exist, that argument remains unexpanded. |
| */ |
| #define _CRT0_FLAG_DISALLOW_RESPONSE_FILES 0x0010 |
| |
| /* If set, fill sbrk()'d memory with a constant value. If not, memory |
| ** gets whatever happens to have been in there, which breaks some |
| ** applications. |
| */ |
| #define _CRT0_FLAG_FILL_SBRK_MEMORY 0x0020 |
| |
| /* If set, fill memory (above) with 0xdeadbeef, else fill with zero. |
| ** This is especially useful for debugging uninitialized memory problems. |
| */ |
| #define _CRT0_FLAG_FILL_DEADBEEF 0x0040 |
| |
| /* If set, set DS limit to 4GB which allows use of near pointers to DOS |
| ** (and other) memory. WARNING, disables memory protection and bad pointers |
| ** may crash the machine or wipe out your data. |
| */ |
| #define _CRT0_FLAG_NEARPTR 0x0080 |
| |
| /* If set, disable NULL pointer protection (if it can be controlled at all). |
| */ |
| #define _CRT0_FLAG_NULLOK 0x0100 |
| |
| /* If set, enabled capture of NMI in exception code. This may cause problems |
| ** with laptops and "green" boxes which use it to wake up. Default is to |
| ** leave NMIs alone and pass through to real mode code. You decide. |
| */ |
| #define _CRT0_FLAG_NMI_SIGNAL 0x0200 |
| |
| /* If set, disable usage of long file name functions even on systems |
| ** (such as Win95) which support them. This might be needed to work |
| ** around program assumptions on file name format on programs written |
| ** specifically for DOS. |
| */ |
| #define _CRT0_FLAG_NO_LFN 0x0400 |
| |
| /* If set, chooses an sbrk() algorithm. If your code requires one type |
| ** or the other, set the value (since the default may change). The non-move |
| ** sbrk makes sure the base of CS/DS/SS does not change. Each new sbrk() |
| ** allocation is put in a different DPMI memory block. This works best with |
| ** DOS programs which would like to use near pointers or hardware interrupts. |
| ** The unix sbrk resizes a single memory block, so programs making assumptions |
| ** about unix-like sbrk behavior may run better with this choice. |
| */ |
| #define _CRT0_FLAG_NONMOVE_SBRK 0x0000 /* Default */ |
| #define _CRT0_FLAG_UNIX_SBRK 0x0800 |
| |
| /* If set, locks all memory as it is allocated. This effectively disables |
| ** virtual memory, and may be useful if using extensive hardware interrupt |
| ** codes in a relatively small image size. The memory is locked after it |
| ** is sbrk()ed, so the locking may fail. This bit may be set or cleared |
| ** during execution. When sbrk() uses multiple memory zones, it can be |
| ** difficult to lock all memory since the memory block size and location is |
| ** impossible to determine. |
| */ |
| |
| #define _CRT0_FLAG_LOCK_MEMORY 0x1000 |
| |
| /* If set, disables all filename letter-case conversion in functions that |
| ** traverse directories (except findfirst/findnext which always return the |
| ** filenames exactly as found in the directory entry). When reset, all |
| ** filenames on 8+3 MSDOS filesystems and DOS-style 8+3 filenames on LFN |
| ** systems are converted to lower-case by functions such as `readdir', |
| ** `getcwd', `_fixpath' and `srchpath'. Note that when this flag is set, |
| ** ALL filenames on MSDOS systems will appear in upper-case, which is |
| ** both ugly and will break many Unix-born programs. Use only if you know |
| ** exactly what you are doing! |
| */ |
| |
| #define _CRT0_FLAG_PRESERVE_FILENAME_CASE 0x2000 |
| |
| /* If set, the quote characters ', ", and \ will be retained in argv[] |
| ** elements when processing command lines passed via `system'. This is |
| ** used by `redir', and should only be needed if you want to get the |
| ** original command line exactly as it was passed by the caller. |
| */ |
| |
| #define _CRT0_FLAG_KEEP_QUOTES 0x4000 |
| |
| /*****************************************************************************\ |
| * Access to the memory handles used by the non-move sbrk algorithm. |
| * The handle is the SI:DI DPMI handle; the address is the offset relative |
| * to the application's address space. Address will be zero unused slots > 1. |
| \*****************************************************************************/ |
| |
| typedef struct { |
| long handle; |
| unsigned address; |
| } __djgpp_sbrk_handle; |
| |
| extern __djgpp_sbrk_handle __djgpp_memory_handle_list[256]; |
| __djgpp_sbrk_handle *__djgpp_memory_handle(unsigned address); |
| |
| #endif /* !_POSIX_SOURCE */ |
| #endif /* !__STRICT_ANSI__ */ |
| #endif /* !__dj_ENFORCE_ANSI_FREESTANDING */ |
| |
| #ifndef __dj_ENFORCE_FUNCTION_CALLS |
| #endif /* !__dj_ENFORCE_FUNCTION_CALLS */ |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* !__dj_include_crt0_h_ */ |