/****************************************************************/
/* */
/* globals.h */
/* */
/* Global data structures and declarations */
/* */
/* November 9, 1991 */
/* */
/* Copyright (c) 1995 */
/* 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. */
/****************************************************************/
/* $Logfile: C:/dos-c/src/ipl/globals.h_v $ */
#ifdef MAIN
# ifndef IPL
static BYTE *Globals_hRcsId = "$Header: C:/dos-c/src/ipl/globals.h_v 1.2 01 Sep 1995 17:44:38 patv $";
# endif
#endif
/*
* $Log: C:/dos-c/src/ipl/globals.h_v $
*
* Rev 1.2 01 Sep 1995 17:44:38 patv
* First GPL release.
*
* Rev 1.1 30 Jul 1995 20:48:10 patv
* Eliminated version strings in ipl
*
* Rev 1.0 02 Jul 1995 10:12:18 patv
* Initial revision.
*/
#include "../../hdr/device.h"
#include "../../hdr/mcb.h"
#include "../../hdr/pcb.h"
#include "../../hdr/date.h"
#include "../../hdr/time.h"
#include "../../hdr/fat.h"
#include "../../hdr/fcb.h"
#include "../../hdr/tail.h"
#include "../../hdr/process.h"
#include "../../hdr/dcb.h"
#include "../../hdr/sft.h"
#include "../../hdr/exe.h"
#include "../../hdr/fnode.h"
#include "../../hdr/dirmatch.h"
#include "../../hdr/file.h"
#include "../../hdr/dosnames.h"
#include "../../hdr/clock.h"
#include "../../hdr/kbd.h"
#include "../../hdr/error.h"
#define MAJOR_RELEASE 3
#define MINOR_RELEASE 30
#define REV_NUMBER 0
#define REVISION_MAJOR 1
#define REVISION_MINOR 0
/* */
/* 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 NFILES 16 /* number of files in table */
#define NDEVS 4 /* number of supported devices */
#define NAMEMAX 64 /* Maximum path for CDS */
/* 0 = CON, standard input, can be redirected */
/* 1 = CON, standard output, can be redirected */
/* 2 = CON, standard error */
/* 3 = AUX, auxiliary */
/* 4 = PRN, list device */
/* 5 = 1st user file ... */
#define STDIN 0
#define STDOUT 1
#define STDERR 2
#define STDAUX 3
#define STDPRN 4
/* error results returned after asking user */
#define ABORT -1
#define RETRY 1
#define FAIL 0
#define CONTINUE 2
/* 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 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_Q 0x11
#define CTL_S 0x13
#define CTL_Z 0x1a
#define ESC 0x1b
#define CTL_BS 0x7f
#define F3 0x3d
#define LEFT 0x4b
#define RIGHT 0x4d
/* Blockio constants */
#define NUMBUFF 6 /* Number of track buffers -- must be at least 3 */
#define DSKWRITE 1 /* dskxfr function parameters */
#define DSKREAD 2
/* FAT cluster special flags */
#define FREE 0x000
#define LONG_LAST_CLUSTER 0xFFFF
#define LONG_MASK 0xFFF8
#define LONG_BAD 0xFFF0
#define LAST_CLUSTER 0x0FFF
#define MASK 0xFF8
#define BAD 0xFF0
/* */
/* Data structures and unions */
/* */
/* Sector buffer structure */
#define BUFFERSIZE 512
struct buffer
{
struct buffer
FAR *b_next; /* form linked list for LRU */
WORD b_unit; /* disk for this buffer */
LONG b_blkno; /* block for this buffer */
BYTE b_flag; /* buffer valid flag */
BYTE b_update; /* true if a blockio write has */
/* put data in this buffer, */
/* but the buffer hasn't been */
/* flushed yet. */
BYTE b_buffer[BUFFERSIZE]; /* 512 byte sectors for now */
};
/* */
/* External Assembly variables */
/* */
extern struct dhdr
FAR clk_dev, /* Clock device driver */
FAR con_dev, /* Console device driver */
FAR blk_dev; /* Block device (Disk) driver */
extern UWORD
ram_top, /* How much ram in Kbytes */
#ifdef I86
api_sp, /* api stacks - for context */
api_ss, /* switching */
usr_ss, /* user stack segment */
MarkSS, /* stack highwater segment */
#endif
MarkSP, /* stack highwater stack pointer */
usr_sp; /* user stack */
extern COUNT *
#ifdef MC68K
api_sp, /* api stacks - for context */
MarkSP, /* stack highwater stack pointer */
#endif
api_tos; /* API handler stack */
extern BYTE
FAR last; /* first available byte of ram */
/* */
/* Global variables */
/* */
GLOBAL
iregs far *user_r;
GLOBAL
seg master_env; /* Master environment segment */
GLOBAL BYTE
os_major /* major version number */
#ifdef MAIN
= MAJOR_RELEASE,
#else
,
#endif
os_minor /* minor version number */
#ifdef MAIN
= MINOR_RELEASE,
#else
,
#endif
rev_number /* minor version number */
#ifdef MAIN
= REV_NUMBER,
#else
,
#endif
version_flags; /* minor version number */
#ifdef DEBUG
GLOBAL WORD bDumpRdWrParms
# ifdef MAIN
= FALSE;
# else
;
# endif
#endif
GLOBAL BYTE *copyright
#ifdef MAIN
="(C) Copyright 1995\nPasquale J. Villani\nAll Rights Reserved\n";
#else
;
#endif
GLOBAL BYTE *os_release
#ifdef MAIN
# ifdef SHWR
="DOS-C version %d.%02d [Shareware Release].\n\
\n\
May be freely redistributed provided you do not alter the kernel or any\n\
associated files.\n";
# else
="DOS-C version %d.%02d\n\n";
# endif
#else
;
#endif
/* Globally referenced variables */
extern UWORD
first_mcb; /* Start of user memory */
extern struct dpb
FAR *DPBp; /* First drive Parameter Block */
extern sfttbl
FAR *sfthead; /* System File Table head */
extern struct dhdr
FAR *clock, /* CLOCK$ device */
FAR *syscon; /* console device */
extern WORD
maxbksize; /* Number of Drives in system */
extern struct buffer
FAR *firstbuf; /* head of buffers linked list */
extern VOID /* temporary */
FAR *CDSp; /* Current Directory Structure */
extern fcb
FAR *FCBp; /* FCB table pointer */
extern WORD
nprotfcb; /* number of protected fcbs */
extern BYTE
nblkdev, /* number of block devices */
lastdrive; /* value of last drive */
extern struct dhdr
nul_dev;
extern BYTE njoined; /* number of joined devices */
extern WORD
BootDrive, /* Drive we came up from */
NumFloppies; /* How many floppies we have */
/* start of uncontrolled variables */
GLOBAL seg cu_psp; /* current psp segment */
GLOBAL iregs error_regs; /* registers for dump */
GLOBAL WORD
tsr, /* true if program is TSR */
break_flg, /* true if break was detected */
dump_regs, /* dump registers of bad call */
scr_pos, /* screen position for bs, ht, etc */
default_drive; /* default drive for dos */
GLOBAL keyboard
kb_buf;
GLOBAL sfttbl
basesft;
GLOBAL struct dpb
blk_devices[NDEVS];
GLOBAL struct f_node
f_nodes[NFILES];
GLOBAL struct buffer
FAR *lastbuf, /* tail of ditto */
buffers[NUMBUFF]; /* array of track buffers */
GLOBAL iregs
FAR *ustackp, /* user stack */
FAR *kstackp; /* kernel stack */
GLOBAL BYTE
verify_ena, /* verify enabled flag */
break_ena, /* break enabled flag */
return_mode, /* Process termination rets */
return_code, /* " " " */
mem_access_mode; /* memory allocation scheme */
GLOBAL BYTE
InDOS, /* In DOS critical section */
FAR *dta; /* Disk transfer area (kludge) */
/* */
/* Function prototypes - automatically generated */
/* */
#include "proto.h"
/* Process related functions - not under automatic generation. */
/* Typically, these are in ".asm" files. */
VOID
INRPT FAR re_entry(),
INRPT FAR exec_user(),
INRPT FAR handle_break();
VOID
enable(),
disable();
#ifdef PROTO
VOID FAR set_stack(VOID);
VOID FAR restore_stack(VOID);
VOID execrh(request FAR *, struct dhdr FAR *);
VOID exit(COUNT);
VOID INRPT FAR handle_break(VOID);
VOID tmark(VOID);
BOOL tdelay(LONG);
BYTE FAR *device_end(VOID);
COUNT kb_data(VOID);
COUNT kb_input(VOID);
VOID setvec(UWORD, VOID (INRPT FAR *)());
COUNT con(COUNT);
VOID getdirent(BYTE FAR *, struct dirent FAR *);
VOID putdirent(struct dirent FAR *, BYTE FAR *);
#else
VOID FAR set_stack();
VOID FAR restore_stack();
VOID execrh();
VOID exit();
VOID INRPT FAR handle_break();
VOID tmark();
BOOL tdelay();
BYTE FAR *device_end();
COUNT kb_data();
COUNT kb_input();
VOID setvec();
COUNT con();
VOID getdirent();
VOID putdirent();
#endif
/* */
/* special word packing prototypes */
/* */
#ifdef NATIVE
# define getlong(vp, lp) (*(BYTE *)(lp)=*(LONG *)(vp))
# define getword(vp, wp) (*(WORD *)(wp)=*(WORD *)(vp))
# define getbyte(vp, bp) (*(BYTE *)(bp)=*(BYTE *)(vp))
# define fgetlong(vp, lp) (*(LONG FAR *)(lp)=*(LONG FAR *)(vp))
# define fgetword(vp, wp) (*(WORD FAR *)(wp)=*(WORD FAR *)(vp))
# define fgetbyte(vp, bp) (*(BYTE FAR *)(bp)=*(BYTE FAR *)(vp))
# define fputlong(lp, vp) (*(LONG FAR *)(vp)=*(LONG FAR *)(lp))
# define fputword(wp, vp) (*(WORD FAR *)(vp)=*(WORD FAR *)(wp))
# define fputbyte(bp, vp) (*(BYTE FAR *)(vp)=*(BYTE FAR *)(bp))
#else
# ifdef PROTO
VOID getword(VOID *, WORD *);
VOID getbyte(VOID *, BYTE *);
VOID fgetlong(VOID FAR *, LONG FAR *);
VOID fgetword(VOID FAR *, WORD FAR *);
VOID fgetbyte(VOID FAR *, BYTE FAR *);
VOID fputlong(LONG FAR *, VOID FAR *);
VOID fputword(WORD FAR *, VOID FAR *);
VOID fputbyte(BYTE FAR *, VOID FAR *);
# else
VOID getword();
VOID getbyte();
VOID fgetlong();
VOID fgetword();
VOID fgetbyte();
VOID fputlong();
VOID fputword();
VOID fputbyte();
# endif
#endif
/* Special IPL defines */
#define KERNSEG 0x00c0
