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FreeDOS/kernel/globals.h

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FreeDOS kernel current - 2041+svn1709
2012-10-15 02:08:06 +02:00
/****************************************************************/
/* */
/* globals.h */
/* DOS-C */
/* */
/* Global data structures and declarations */
/* */
/* Copyright (c) 1995, 1996 */
/* Pasquale J. Villani */
/* All Rights Reserved */
/* */
/* This file is part of DOS-C. */
/* */
/* DOS-C is free software; you can redistribute it and/or */
/* modify it under the terms of the GNU General Public License */
/* as published by the Free Software Foundation; either version */
/* 2, or (at your option) any later version. */
/* */
/* DOS-C 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 DOS-C; see the file COPYING. If not, */
/* write to the Free Software Foundation, 675 Mass Ave, */
/* Cambridge, MA 02139, USA. */
/****************************************************************/
#ifdef VERSION_STRINGS
#ifdef MAIN
static BYTE *Globals_hRcsId =
"$Id: globals.h 1705 2012-02-07 08:10:33Z perditionc $";
#endif
#endif
#include "device.h"
#include "mcb.h"
#include "pcb.h"
#include "date.h"
#include "time.h"
#include "fat.h"
#include "fcb.h"
#include "tail.h"
#include "process.h"
#include "sft.h"
#include "cds.h"
#include "exe.h"
#include "dirmatch.h"
#include "fnode.h"
#include "file.h"
#include "clock.h"
#include "kbd.h"
#include "error.h"
#include "version.h"
#include "network.h"
#include "buffer.h"
#include "dcb.h"
#include "xstructs.h"
/* fatfs.c */
#ifdef WITHFAT32
VOID bpb_to_dpb(bpb FAR * bpbp, REG struct dpb FAR * dpbp, BOOL extended);
#else
VOID bpb_to_dpb(bpb FAR * bpbp, REG struct dpb FAR * dpbp);
#endif
#ifdef WITHFAT32
struct dpb FAR *GetDriveDPB(UBYTE drive, COUNT * rc);
#endif
extern struct dpb
FAR * ASM DPBp; /* First drive Parameter Block */
/* JPP: for testing/debuging disk IO */
/*#define DISPLAY_GETBLOCK */
/* */
/* Convience switch for maintaining variables in a single location */
/* */
#ifdef MAIN
#define GLOBAL
#else
#define GLOBAL extern
#endif
/* */
/* Convience definitions of TRUE and FALSE */
/* */
#ifndef TRUE
#define TRUE (1)
#endif
#ifndef FALSE
#define FALSE (0)
#endif
/* */
/* Constants and macros */
/* */
/* Defaults and limits - System wide */
#define NAMEMAX MAX_CDSPATH /* Maximum path for CDS */
/* internal error from failure or aborted operation */
#define ERROR -1
#define OK 0
/* internal transfer direction flags */
#define XFR_READ 1
#define XFR_WRITE 2
#define XFR_FORCE_WRITE 3
/* flag to update fcb_rndm field */
#define XFR_FCB_RANDOM 4
#define RDONLY 0
#define WRONLY 1
#define RDWR 2
/* special ascii code equates */
#define SPCL 0x00
#define CTL_C 0x03
#define CTL_F 0x06
#define BELL 0x07
#define BS 0x08
#define HT 0x09
#define LF 0x0a
#define CR 0x0d
#define CTL_P 0x10
#define CTL_Q 0x11
#define CTL_S 0x13
#define CTL_Z 0x1a
#define ESC 0x1b
#define CTL_BS 0x7f
#define INS 0x5200
#define DEL 0x5300
#define F1 0x3b00
#define F2 0x3c00
#define F3 0x3d00
#define F4 0x3e00
#define F5 0x3f00
#define F6 0x4000
#define LEFT 0x4b00
#define RIGHT 0x4d00
/* Blockio constants */
#define DSKWRITE 1 /* dskxfr function parameters */
#define DSKREAD 2
#define DSKWRITEINT26 3
#define DSKREADINT25 4
/* NLS character table type */
typedef BYTE *UPMAP;
/* */
/* External Assembly variables */
/* */
extern struct dhdr
FAR ASM clk_dev, /* Clock device driver */
FAR ASM con_dev, /* Console device driver */
FAR ASM prn_dev, /* Generic printer device driver */
FAR ASM aux_dev, /* Generic aux device driver */
FAR ASM blk_dev; /* Block device (Disk) driver */
extern COUNT *error_tos, /* error stack */
disk_api_tos, /* API handler stack - disk fns */
char_api_tos; /* API handler stack - char fns */
extern BYTE FAR _HMATextAvailable, /* first byte of available CODE area */
FAR _HMATextStart[], /* first byte of HMAable CODE area */
FAR _HMATextEnd[]; /* and the last byte of it */
extern
BYTE DosLoadedInHMA; /* if InitHMA has moved DOS up */
extern struct ClockRecord
ASM ClkRecord;
/* */
/* Global variables */
/* */
extern BYTE ASM os_setver_major,/* editable major version number */
ASM os_setver_minor, /* editable minor version number */
ASM os_major, /* major version number */
ASM os_minor, /* minor version number */
ASM rev_number, /* minor version number */
ASM version_flags; /* minor version number */
#ifdef DEBUG
GLOBAL WORD bDumpRegs
#ifdef MAIN
= FALSE;
#else
;
#endif
GLOBAL WORD bDumpRdWrParms
#ifdef MAIN
= FALSE;
#else
;
#endif
#endif
#if 0 /* defined in MAIN.C now to save low memory */
GLOBAL BYTE copyright[] =
"(C) Copyright 1995-2006 Pasquale J. Villani and The FreeDOS Project.\n"
"All Rights Reserved. This is free software and comes with ABSOLUTELY NO\n"
"WARRANTY; you can redistribute it and/or modify it under the terms of the\n"
"GNU General Public License as published by the Free Software Foundation;\n"
"either version 2, or (at your option) any later version.\n";
#endif
GLOBAL const BYTE ASM os_release[]
#ifdef MAIN
= KERNEL_VERSION_STRING
#if 0
"For technical information and description of the DOS-C operating system\n\
consult \"FreeDOS Kernel\" by Pat Villani, published by Miller\n\
Freeman Publishing, Lawrence KS, USA (ISBN 0-87930-436-7).\n\
\n"
#endif
#endif
;
/* Globally referenced variables - WARNING: ORDER IS DEFINED IN */
/* KERNEL.ASM AND MUST NOT BE CHANGED. DO NOT CHANGE ORDER BECAUSE THEY */
/* ARE DOCUMENTED AS UNDOCUMENTED (?) AND HAVE MANY PROGRAMS AND TSRs */
/* ACCESSING THEM */
extern UWORD ASM NetBios;
extern BYTE * ASM net_name;
extern BYTE ASM net_set_count;
extern BYTE ASM NetDelay, ASM NetRetry;
extern UWORD ASM first_mcb, /* Start of user memory */
ASM uppermem_root; /* Start of umb chain (usually 9fff) */
extern char * ASM inputptr; /* pointer to unread CON input */
extern sfttbl FAR * ASM sfthead; /* System File Table head */
extern struct dhdr
FAR * ASM clock, /* CLOCK$ device */
FAR * ASM syscon; /* console device */
extern WORD ASM maxsecsize; /* largest sector size in use (can use) */
extern struct buffer
FAR *ASM firstbuf; /* head of buffers linked list */
enum {LOC_CONV=0, LOC_HMA=1};
extern unsigned char ASM bufloc; /* 0=conv, 1=HMA */
extern void far * ASM deblock_buf; /* pointer to workspace buffer */
GLOBAL char FAR *firstAvailableBuf;
extern struct cds FAR * ASM CDSp; /* Current Directory Structure */
extern
struct cds FAR * ASM current_ldt;
extern LONG ASM current_filepos; /* current file position */
extern sfttbl FAR * ASM FCBp; /* FCB table pointer */
extern WORD ASM nprotfcb; /* number of protected fcbs */
extern UBYTE ASM nblkdev, /* number of block devices */
ASM lastdrive, /* value of last drive */
ASM uppermem_link, /* UMB Link flag */
ASM PrinterEcho; /* Printer Echo Flag */
extern UWORD ASM LoL_nbuffers; /* Number of buffers */
extern struct dhdr
ASM nul_dev;
extern UBYTE ASM mem_access_mode; /* memory allocation scheme */
extern BYTE ASM ErrorMode, /* Critical error flag */
ASM InDOS, /* In DOS critical section */
ASM OpenMode, /* File Open Attributes */
ASM SAttr, /* Attrib Mask for Dir Search */
ASM dosidle_flag, ASM Server_Call, ASM CritErrLocus, ASM CritErrAction,
ASM CritErrClass, ASM VgaSet,
ASM njoined; /* number of joined devices */
extern UWORD ASM Int21AX;
extern COUNT ASM CritErrCode;
extern BYTE FAR * ASM CritErrDev;
extern struct dirent
ASM SearchDir;
extern struct {
COUNT nDrive;
BYTE szName[FNAME_SIZE + 1];
BYTE szExt[FEXT_SIZE + 1];
} ASM FcbSearchBuffer;
extern struct /* Path name parsing buffer */
{
BYTE _PriPathName[128];
} ASM _PriPathBuffer;
#define PriPathName _PriPathBuffer._PriPathName
extern struct /* Alternate path name parsing buffer */
{
BYTE _SecPathName[128];
} ASM _SecPathBuffer;
#define SecPathName _SecPathBuffer._SecPathName
extern UWORD ASM wAttr;
extern BYTE ASM default_drive; /* default drive for dos */
extern dmatch ASM sda_tmp_dm; /* Temporary directory match buffer */
extern dmatch ASM sda_tmp_dm_ren; /* 2nd Temporary directory match buffer */
extern BYTE
ASM internal_data[], /* sda areas */
ASM swap_always[], /* " " */
ASM swap_indos[], /* " " */
ASM tsr, /* true if program is TSR */
ASM break_flg, /* true if break was detected */
ASM break_ena; /* break enabled flag */
extern void FAR * ASM dta; /* Disk transfer area (kludge) */
extern seg ASM cu_psp; /* current psp segment */
extern iregs FAR * ASM user_r; /* User registers for int 21h call */
extern struct dirent /* Temporary directory entry */
ASM DirEntBuffer;
extern fcb FAR * ASM sda_lpFcb; /* Pointer to users fcb */
extern sft FAR * ASM lpCurSft;
extern BYTE ASM verify_ena, /* verify enabled flag */
ASM switchar; /* switch char */
extern UWORD ASM return_code; /* Process termination rets */
extern UBYTE ASM BootDrive, /* Drive we came up from */
ASM CPULevel, /* CPU family, 0=8086, 1=186, ... */
ASM scr_pos; /* screen position for bs, ht, etc */
/*extern WORD
NumFloppies; !!*//* How many floppies we have */
extern keyboard ASM kb_buf;
extern char ASM local_buffer[LINEBUFSIZE0A];
extern UBYTE DiskTransferBuffer[/*SEC_SIZE*/];
extern struct cds
ASM TempCDS;
/* start of uncontrolled variables */
#ifdef DEBUG
GLOBAL iregs error_regs; /* registers for dump */
GLOBAL WORD dump_regs; /* dump registers of bad call */
#endif
/* */
/* Function prototypes - automatically generated */
/* */
#include "proto.h"
/* Process related functions - not under automatic generation. */
/* Typically, these are in ".asm" files. */
VOID ASMCFUNC FAR cpm_entry(VOID)
/*INRPT FAR handle_break(VOID) */ ;
COUNT ASMCFUNC
CriticalError(COUNT nFlag, COUNT nDrive, COUNT nError,
struct dhdr FAR * lpDevice);
VOID ASMCFUNC FAR CharMapSrvc(VOID);
#if 0
VOID ASMCFUNC FAR set_stack(VOID);
VOID ASMCFUNC FAR restore_stack(VOID);
#endif
/*VOID INRPT FAR handle_break(VOID); */
ULONG ASMPASCAL ReadPCClock(VOID);
VOID ASMPASCAL WriteATClock(BYTE *, BYTE, BYTE, BYTE);
VOID ASMPASCAL WritePCClock(ULONG);
intvec getvec(unsigned char);
#ifdef __WATCOMC__
#pragma aux (pascal) ReadPCClock modify exact [ax cx dx]
#pragma aux (pascal) WriteATClock modify exact [ax bx cx dx]
#pragma aux (pascal) WritePCClock modify exact [ax cx dx]
#endif
/* */
/* special word packing prototypes */
/* */
#ifdef NATIVE
#define getlong(vp) (*(UDWORD *)(vp))
#define getword(vp) (*(UWORD *)(vp))
#define getbyte(vp) (*(UBYTE *)(vp))
#define fgetlong(vp) (*(UDWORD FAR *)(vp))
#define fgetword(vp) (*(UWORD FAR *)(vp))
#define fgetbyte(vp) (*(UBYTE FAR *)(vp))
#define fputlong(vp, l) (*(UDWORD FAR *)(vp)=l)
#define fputword(vp, w) (*(UWORD FAR *)(vp)=w)
#define fputbyte(vp, b) (*(UBYTE FAR *)(vp)=b)
#else
UDWORD getlong(VOID *);
UWORD getword(VOID *);
UBYTE getbyte(VOID *);
UDWORD fgetlong(VOID FAR *);
UWORD fgetword(VOID FAR *);
UBYTE fgetbyte(VOID FAR *);
VOID fputlong(VOID FAR *, UDWORD);
VOID fputword(VOID FAR *, UWORD);
VOID fputbyte(VOID FAR *, UBYTE);
#endif
#ifndef __WATCOMC__
#define setvec setvec_resident
#endif
void setvec(unsigned char intno, intvec vector);
/*#define is_leap_year(y) ((y) & 3 ? 0 : (y) % 100 ? 1 : (y) % 400 ? 0 : 1) */
/* ^Break handling */
#ifdef __WATCOMC__
#pragma aux (cdecl) spawn_int23 aborts;
#endif
void ASMCFUNC spawn_int23(void); /* procsupt.asm */
void ASMCFUNC DosIdle_hlt(void); /* dosidle.asm */
add missing ASM to fix build Without this I am getting undefined reference to _ReturnAnyDosVersionExpected
2016-10-02 22:47:06 +02:00
GLOBAL BYTE ASM ReturnAnyDosVersionExpected;
FreeDOS kernel current - 2041+svn1709
2012-10-15 02:08:06 +02:00
GLOBAL BYTE ASM HaltCpuWhileIdle;
/* near fnodes:
* fnode[0] is used internally for almost all cases.
* fnode[1] is only used for:
* 1) rename (target)
* 2) rmdir (checks if the directory to remove is empty)
* 3) commit (copies, than closes fnode[0])
* 3) merge_file_changes (for SHARE)
*/
GLOBAL struct f_node fnode[2];
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