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EXTERN.H
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EXTERN.H
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/*
* UZIX - UNIX Implementation for MSX
* (c) 1997-2001 Arcady Schekochikhin
* Adriano C. R. da Cunha
*
* UZIX is based on UZI (UNIX Zilog Implementation)
* UZI is a UNIX kernel clone written for Z-80 systems.
* All code is public domain, not being based on any AT&T code.
*
* The author, Douglas Braun, can be reached at:
* 7696 West Zayante Rd.
* Felton, CA 95018
* oliveb!intelca!mipos3!cadev4!dbraun
*
* This program is under GNU GPL, read COPYING for details
*
*/
/**********************************************************
External variables and global declarations
**********************************************************/
#ifndef _EXTERN_H
#define _EXTERN_H
/* These are the global data structures */
#ifdef __MAIN__COMPILATION
#define EXT
#else
#define EXT extern
#endif
#define GBL
#define LCL
#define STATIC
#ifdef PC_HOSTED /* only for Turbo-C! */
void __cli__();
void __sti__();
void __int__(int);
void __emit__();
#ifdef PC_UTILS_TARGET
#define _di()
#define _ei()
#define __ei()
#else
#define geninterrupt(i) __int__(i)
#undef _di
#undef _ei
#define _di() __cli__()
#define _ei() { if (!inint) __sti__(); }
#define __ei() __sti__()
#endif
#define MAXDRIV 2 /* maximum number of floppy drives */
/* must be power of two */
#endif /* PC_HOSTED */
#ifdef MSX_HOSTED
#ifdef Z80MU
#define cursor(p)
#else
#define cursor(p) ((*(uchar *)0xFCA9) = (p)) /* Turns cursor on (255) or off (0) */
#endif
#ifdef __KERNEL__
#define CALROM 0801Ch /* ROM call routine address */
#define BDOSADDR 0801Fh /* real BDOS call routine address */
#define BDOS _bdospatch /* BDOS call routine address */
#define MAINDRV 0F348h /* diskrom slot to access */
#asm
global _bdospatch, _bdostr, _bdosaddr
global _bootdskrom
#endasm
#else
#define CALROM 0F710h /* ROM call routine address */
#define BDOS 0F713h /* BDOS call routine address */
#define MAINDRV 0F716h /* diskrom slot to access */
#endif
#define DOSVER (*(char *)0xf313) /* MSX: 0=DOS1 */
/* MSX UZIX memory map:
Notes:
UZIX kernel can't be greater than F180h, or it will hang MSX Turbo-R.
Beware of address F661h. It used by CHPUT of MSX BIOS.
0000 ---------------------
| system vectors
0010 ---------------------
| process data
0100 ---------------------
| user process
8000 ---------------------
| kernel initialization
801C ---------------------
| ROM/BDOS caller
809D ---------------------
| kernel area
F180 ---------------------
| DiskROM hook area
F380 ---------------------
| MSX system var area
F419 ---------------------
| disk buffer area
F619 ---------------------
| system area
F660 ---------------------
| ROM caller stack area
F6EE ---------------------
| kernel data area
F710 ---------------------
| kernel temp stack
F7C5 ---------------------
| system area
FDFD ---------------------
| UZIX ISR
FF01 ---------------------
| system area
FFFF ---------------------
*/
#define BDRVADDR 63218 /* MSX boot drive (F6F2h, 1 byte) */
#define CNFGBYTE 63219 /* UZIX configuration byte */
#define TICKADDR 63220 /* MSX frequency byte indicator (F6F4h, 1 byte) */
#define RAMADDR 63221 /* MSX swap RAM size (F6F5h, 1 byte) */
#define RAMSLOT 63222 /* MSX swap RAM slot (F6F6h, 1 byte) */
#define IM2ADDR 65021 /* IM 2 interruption call address (FDFDh, 3 bytes)
(KILL command hook) */
#define TEMPDBUF 62489 /* temporary disk buffer (F419h, 512 bytes) */
#if DEBUG > 1
#define TSTK _tmpstk+TMPSTK-2 /* exec() tmp stack */
#else
#define TSTK 0f7c3h
#endif
#define MAXDRIV 8 /* maximum number of floppy drives */
/* must be power of two */
#endif /* MSX_HOSTED */
#define DEV_TAB
#ifdef ORION_HOSTED
/*
1B,':' - âêëþ÷èòü êóðñîð
1B,';' - âûêëþ÷èòü êóðñîð
*/
/* Turns cursor on (p=255) or off (p=0) BIOS_CONOUT=4 */
#define cursor(p) /* (p ? _displaycursor() : _erasecursor()) */
#include "orion.h"
#endif /* ORION_HOSTED */
#define __EXTERN_H_IN_PROGRESS
#include "config.h"
#undef __EXTERN_H_IN_PROGRESS
EXT uchar MAXTICKS; /* Max ticks before swapping out (time slice) */
EXT uchar TICKSPERSEC; /* Ticks per second */
EXT int TICKSPERMIN; /* Ticks per minute */
#define COMMON_MEM 0xf162
#ifdef ORI_UZIX
#define _COMMONMEM 0f162h
#define udata (*((udata_t *)(COMMON_MEM+7))) /* see also _UDATAADDR*/
#define UDATA(a) (udata.a)
#define UDATA_ADDR (&udata)
#else
#ifdef LOC_UDATA
#if DEBUG > 2
#ifdef __MAIN__COMPILATION
udata_t *_udata_ = ((udata_t *)0x10);
#else
EXT udata_t *_udata_;
#endif
#define UDATA(a) (_udata_->a)
#define UDATA_ADDR (_udata_)
#else
#define udata (*((udata_t *)0x10))
#define UDATA(a) (udata.a)
#define UDATA_ADDR (&udata) /* see also _UDATAADDR*/
#endif
#else
EXT udata_t udata; /* MUST BE FIRST */
#define UDATA(a) (udata.a)
#define UDATA_ADDR (&udata)
#endif
#endif
#ifdef __KERNEL__
EXT ptab_t ptab[PTABSIZE]; /* processes descriptors */
EXT uchar ptotal; /* total active processes */
#endif
#if DEBUG > 1
EXT uchar traceon; /* syscall tracing on */
#endif
#ifdef UZIX_MODULE
EXT modtab_t modtab[MTABSIZE]; /* modules table */
EXT modreply_t modreply[RTABSIZE]; /* modules reply table */
#endif
#ifdef __KERNEL__
#if DEBUG > 1 || defined(PC_HOSTED)
EXT char tmpstk[TMPSTK]; /* temporary stack */
#endif
#endif
extern char *UZIX;
EXT inoptr root_ino; /* Address of root dir in inode table */
EXT dev_t root_dev; /* Device number of root filesystem. */
EXT cinode_t i_tab[ITABSIZE]; /* In-core inode table */
EXT oft_t of_tab[OFTSIZE]; /* Open File Table */
EXT filesys_t fs_tab[NFS]; /* Table entry for each device with a fs. */
EXT blkbuf_t bufpool[NBUFS]; /* Buffer pool */
EXT uchar dirty_mask; /* 1 if buffer writing delayed, else 0 */
EXT ptptr initproc; /* The process table address of the first process. */
EXT volatile uchar inint; /* flag is set whenever interrupts are being serviced */
EXT uchar sec; /* Ticks counter for counting off one second */
EXT uchar runticks; /* Number of ticks current process has been swapped in */
#ifndef ORI_UZIX
EXT time_t tod; /* Time of day */
#else
#define tod *((time_t *)0x0f3d8) /* autoupdated by driver.sys ORION CP/M console driver */
#endif
EXT time_t ticks; /* Cumulative tick counter, in minutes and ticks */
EXT uchar total; /* Total available memory 16k pages */
#ifdef USETEST
extern void tester __P((int where));
#endif
#ifdef NEED__DEVFLOP
/* DEVFLOP.C */
extern int fd_init __P((uchar minor));
extern int fd_open __P((uchar minor));
extern int fd_close __P((uchar minor));
extern int fd_ioctl __P((uchar minor, int, void *));
extern int fd_read __P((uchar minor, uchar rawflag));
extern int fd_write __P((uchar minor, uchar rawflag));
#endif
#ifdef NEED__DEVSWAP
/* DEVSWAP.C */
#ifdef __KERNEL__
#ifndef ORI_UZIX
extern int swap_init __P((void));
extern int swap_open __P((void));
extern int swap_close __P((void));
extern int swap_read __P((page_t *mm));
#endif
extern int swap_alloc __P((page_t *mm));
extern int swap_dealloc __P((page_t *mm));
extern int swap_mmread __P((struct swap_mmread *rp));
#ifdef MEMBANKING
#ifdef ORI_UZIX
extern int swap_dup __P((page_t mm, page_t mmnew));
#else
extern int swap_dup __P((page_t *mm, page_t *mmnew));
#endif
#else
extern int swap_write __P((page_t *mm));
#endif
#endif /*__KERNEL__*/
#endif
#ifdef NEED__DEVTTY
/* DEVTTY.C */
#ifndef MSX_HOSTED /* PC_HOSTED, ORION_HOSTED */
#define ERASECURSOR()
#define DISPLAYCURSOR()
#else /* MSX_HOSTED */
#define ERASECURSOR() _erasecursor()
#define DISPLAYCURSOR() _displaycursor()
extern void _erasecursor __P((void));
extern void _displaycursor __P((void));
#endif
extern void _putc __P((uchar c));
extern int tty_poll __P((void));
extern int tty_init __P((uchar minor));
extern int tty_read __P((uchar minor, uchar rawflag));
extern int tty_write __P((uchar minor, uchar rawflag));
extern int tty_open __P((uchar minor));
extern int tty_close __P((uchar minor));
extern int tty_ioctl __P((uchar minor, int, void *));
#endif
#ifdef NEED__DEVMISC
/* DEVMISC.C */
#ifdef MEM_DEV
extern int mem_read __P((uchar minor, uchar rawflag));
extern int mem_write __P((uchar minor, uchar rawflag));
#endif
extern int null_read __P((uchar minor, uchar rawflag));
extern int null_write __P((uchar minor, uchar rawflag));
extern int lpr_open __P((uchar minor));
extern int lpr_close __P((uchar minor));
extern int lpr_read __P((uchar minor, uchar rawflag));
extern int lpr_write __P((uchar minor, uchar rawflag));
#endif
#ifdef NEED__DEVIO
/* DEVIO.C */
/* release buffer */
#define brelse(bp) bfree(bp, 0)
/* free buffer and mark them dirty for eventually writing */
#define bawrite(bp) bfree(bp, 1)
/* shortcuts for block device and character device read/write and device open/close */
#define bdread(bp) bdreadwrite(bp, 0)
#define bdwrite(bp) bdreadwrite(bp, 1)
#define cdread(dev) cdreadwrite(dev, 0)
#define cdwrite(dev) cdreadwrite(dev, 1)
#define d_open(dev) d_openclose(dev, 1)
#define d_close(dev) d_openclose(dev, 0)
extern char *baddevmsg;
/* do all buffers free without flushing */
extern void bufinit(void);
extern void *bread __P((dev_t dev, blkno_t blk, uchar rewrite));
extern int bfree __P((bufptr bp, uchar dirty));
extern void *zerobuf __P((uchar waitfor));
extern void bufsync __P((void));
#if DEBUG > 0
extern void bufdump __P((void));
#endif
extern devsw_t *validdev __P((dev_t dev, char *msg));
extern int bdreadwrite __P((bufptr bp, uchar write));
extern int cdreadwrite __P((dev_t dev, uchar write));
extern int d_openclose __P((dev_t dev, uchar open));
extern int d_init __P((void));
extern int d_ioctl __P((dev_t dev, int request, void *data));
extern int ok __P((uchar minor));
extern int nogood __P((uchar minor));
extern int nogood_ioctl __P((uchar minor, int, void *));
extern int insq __P((queue_t *q, uchar c));
extern int remq __P((queue_t *q, uchar *cp));
extern int uninsq __P((queue_t *q, uchar *cp));
extern void clrq __P((queue_t *q));
extern int fullq __P((queue_t *q));
#endif
#ifdef NEED__FILESYS
/* FILESYS.C */
extern char *baddevmsg;
#define freefileentry(e) ((e) & 0x80)
extern fsptr findfs __P((dev_t devno));
extern int wr_inode __P((inoptr ino));
extern void i_ref __P((inoptr ino));
extern void i_free __P((dev_t devno, ino_t ino));
extern void i_deref __P((inoptr ino));
extern inoptr namei __P((char *name, inoptr *parent, uchar followsym));
extern inoptr srch_dir __P((inoptr wd, char *compname));
extern inoptr srch_mt __P((inoptr ino));
extern inoptr i_open __P((dev_t devno, ino_t ino));
extern int doclose __P((uchar uindex));
extern int ch_link __P((inoptr wd, char *oldname, char *newname, inoptr nindex));
extern char *filename __P((char *path));
extern int namecomp __P((uchar *n1, uchar *n2));
extern inoptr newfile __P((inoptr pino, char *name));
extern ino_t i_alloc __P((dev_t devno));
extern blkno_t blk_alloc __P((dev_t devno));
extern void blk_free __P((dev_t devno, blkno_t blk));
extern uchar oft_alloc __P((void));
extern void oft_deref __P((uchar of));
extern uchar uf_alloc __P((void));
extern bool_t isdevice __P((inoptr ino));
extern void f_trunc __P((inoptr ino));
extern void freeblk __P((dev_t dev, blkno_t blk, uchar level));
extern blkno_t bmap __P((inoptr ip, blkno_t bn, bool_t rwflg));
extern void validblk __P((dev_t dev, blkno_t num));
extern inoptr getinode __P((uchar uindex));
extern int getperm __P((inoptr ino));
extern void setftim __P((inoptr ino, uchar which));
extern int fmount __P((dev_t dev, inoptr ino, bool_t roflag));
extern void magic __P((inoptr ino));
extern void i_sync __P((void));
extern void fs_sync __P((void));
#endif
#ifdef NEED__MACHDEP
/* MACHDEP.C */
/* tempstack() MUST be inline in any case! */
#ifndef ORION_HOSTED
#ifdef __TURBOC__
#define tempstack() (_AX = (uint)tmpstk+sizeof(tmpstk)-2, _SP = _AX)
#else /* z80 */
#define __str3(x) __STRING(x)
#define __str2(x) __str3(x)
#define __str1(x) __str2(x)
#if DEBUG > 1
#define tempstack() asm(" global _tmpstk"); asm(" ld sp," __str1(TSTK))
#else
#define tempstack() asm(" ld sp," __str1(TSTK))
#endif
#endif /* __TURBOC__ */
#endif /* ORION_HOSTED */
extern int Min __P((int a, int b));
extern void bcopy __P((void *src, void *dst, uint count));
extern void bzero __P((void *ptr, uint count));
extern void bfill __P((void *ptr, uchar val, uint count));
#ifndef di
#ifdef HTC
#ifdef ORION_HOSTED
#define PSWAP_OFFSET 6 /* p_swap offset within ptab_t structure - see unix.h */
#define xforkcontext _UZIXBASE+1c6h
#define xsavecontext _UZIXBASE+1c8h
#define xdoswapin _UZIXBASE+21ch
#define xinitarg0 UZIXBASE+0x265
#define xinitarg1 UZIXBASE+0x267
#define xbininit UZIXBASE+0x269
#define xconsole UZIXBASE+0x273
#define KERNEL_PAGE 2
#define _RET_PAGE _COMMONMEM+1
#define _RET_ADDR _COMMONMEM+2
#define _RET_SP _COMMONMEM+4
#define dtsize (*((uchar *)COMMON_MEM)) /* allways starting at COMMON_MEM */
#define ret_page (*((uchar *)(COMMON_MEM+1))) /* page where to return when context continuing. Placement: ret_page,ret_addr ! */
#define ret_addr (*((uchar *)(COMMON_MEM+2))) /* addr where to return when context continuing. Placement: ret_page,ret_addr ! */
#define ret_sp (*((uchar *)(COMMON_MEM+4))) /* stack pointer with to return when context continuing */
#define _UDATAADDR _COMMONMEM+7 /* see also UDATA_ADDR, udata */
#define FSTACK_BCKP UDATA_STASH-0x0100
#define _FSTACKBCKP _UDATASTASH-0100h /* for store F-area content for swapped out process, in process pages*/
/* CP/M interbank routines */
#define BLDIR 0f201h /* multybank ldir */
#define BJMP 0f204h /* multybank jump */
#define BCALL 0f207h /* multybank call */
#define BRET 0f20ah /* multybank ret */
#define BLDB 0f20dh /* multybank getbyte */
#define BSTB 0f210h /* multybank setbyte */
/* #define MEI 0f2c1h /* pseudo ei */
/* #define MDI 0f2deh /* pseudo di */
/* memory constatns. Mapper: port 0F9h, 0f000h..0ffffh - shared mem, 00000h...0efffh - local mem*/
#define YINTVEC ((unsigned char *)0x0f331) /* int 50Hz interbank vector - page:address */
#define PRC_IMSTACK ((unsigned char *)0x0effd) /* stackpointer copy at a moment of int 50Hz*/
/* #define OLD_YINTVEC ((unsigned char *)0x0effa) /* page:address, used only at kernel page */
#define ISR_RET 0f2e3h
#define F3STACK 0f2b5h
#define _YINTVEC 0f331h
#define _PRCIMSTACK 0effdh /* for store SP at 50HZ interrupt moment, all pages */
/* #define _OLDYINTVEC 0effah /* for store CP/M int50hz vector, in kernel page */
#define _GOUNIXSTACK 0effbh /* for store process SP during kernel call, in process pages */
#define _GOSWAPSTACK 0eff9h /* for store F-area SP for swapped out process and FSTACK while executing, in process pages */
#define _RETPAGE 0eff8h
#define FAREA_STACK 0xf100
#define _FAREASTACK 0f100h
#define _PRC_STACK1 0f0feh /* F3_1 area to store SP value at moment of first unix() entrance - usually SP at 0F3xx area */
#define _PRC_STACK2 0f0fch /* F3_2 area to store SP value at moment of second (recursive) unix() entrance - usually SP at 0F3xx area */
#define _TRP_STACK 0f0fah /* F0 area to store SP value at moment of calltrap() - can be resursive unix() in it */
#define _SRV_STACK 0edf6h /* TEMPDBUF-6 , in kernel page only */
/* #define TSTK 0ed76h /* TEMPDBUF-128 , in kernel page only */
#define U_INSYS DIRNAMELEN+2 /* True if in kernel now */
#define U_CALLNO U_INSYS+2 /* syscall being executed */
#define U_ERROR U_CALLNO+1 /* Last error number */
#define U_ARGN1 U_CALLNO+2 /* First arg */
#define U_ARGN2 U_ARGN1+2 /* Second arg */
#define U_ARGN3 U_ARGN2+2 /* Third arg */
#define U_ARGN4 U_ARGN3+2 /* Fourth arg (only for lseek) */
#define U_RETVAL U_ARGN4+2 /* Return value from syscall */
extern void B_COPY(void *src, void *dst, unsigned int count);
extern void B_LDIR(unsigned int count, unsigned char bnksrc, void *src, unsigned char bnkdst, void *dst);
extern void B_LDIRTON(unsigned int count, void *src, void *dst); /* send block from KERNEL_PAGE to process page */
extern int B_LDIRTO2(unsigned int count, void *src, void *dst); /* send block from process page to KERNEL_PAGE, returns (int)dst */
extern void calltrap __P((void));
#ifdef ORI_UTIL
#define _di()
#define _ei()
#define __ei()
#endif
#else
#define _di() asm(" di")
#define _ei() { if (!inint) asm(" ei"); }
#define __ei() asm(" ei")
#endif /* ORION_HOSTED */
#else /* HTC */
extern void _di __P((void));
extern void _ei __P((void));
#endif /* HTC */
#endif /* di */
#ifndef sttime
#define sttime(x) wrtod(x)
#endif
#ifdef __KERNEL__
#define kputchar _putc
#else
#define kprintf printf
#define kputchar(x) printf("%c", x)
#endif
extern void arch_init __P((void));
#ifdef __KERNEL__
extern void _abort __P((int status));
#else
#define _abort(v) exit(v)
#endif
extern void initsys __P((void));
extern void setvectors __P((void));
#ifdef ORI_UZIX
extern void doexec __P((uint argc, uint argv, uint envp, uint start));
#define rdtod()
#else
extern void doexec __P((uint sp));
extern void rdtod __P((void));
#endif
extern int valadr __P((void *base, uint size));
extern void addtick __P((time_t *t1, time_t *t2));
extern void incrtick __P((time_t *t));
extern void rdtime __P((time_t *tloc));
/*#ifdef NO_RTC
extern void updttod __P((void));
#endif*/
extern void wrtod __P((time_t *tloc));
#ifdef __KERNEL__
extern char *itoa __P((int, char *s, int));
extern void kputs __P((char *s));
#endif
#ifdef __TURBOC__
#ifdef __KERNEL__
extern void kprintf __P((char *fmt, ...));
#endif
extern void panic __P((char *s, ...));
/* extern void panic __P((char* s, void* a1, void* a2, void* a3)); */
extern void warning __P((char *s, ...));
#else
#ifdef __KERNEL__
extern void kprintf () /*__P((char *fmt, ...))*/ ;
#endif
extern void panic __P((char *s, ...));
extern void warning __P((char *s, ...));
#endif
#if DEBUG > 0
extern void idump __P((void));
#endif
#endif
#ifdef NEED__PROCESS
/* PROCESS.C */
extern void init __P((void));
#ifdef __KERNEL__
extern void psleep __P((void *event));
extern void wakeup __P((void *event));
extern void swapout __P((void)); /* used in MACHDEP.unix() */
extern int dowait __P((void));
extern int dofork __P((void));
extern void doexit __P((uchar val, uchar val2));
extern void clk_int __P((void));
extern void chksigs __P((void));
extern void sendsig __P((ptptr proc, signal_t sig));
extern void ssig __P((ptptr proc, signal_t sig));
#else /* __KERNEL__ */
#define psleep(p)
#define wakeup(p)
#endif /* __KERNEL__ */
#endif
#ifdef NEED__DISPATCH
/* dispatch.c */
extern int (*disp_tab[]) __P((void));
/*
extern uchar dtsize;
*/
#endif
extern void readwritei __P((char write, inoptr ino));
#define readi(x) readwritei(0, x)
#define writei(x) readwritei(1, x)
#ifdef NEED__SCALL
/* SCALL.C */
extern void exit0 __P((void));
extern int getfsys __P((dev_t devno, void *buf));
extern int sys_NONE __P((void));
extern int sys_open __P((void));
extern int sys_close __P((void));
extern int sys_pipe __P((void));
extern int sys_link __P((void));
extern int sys_symlink __P((void));
extern int sys_unlink __P((void));
extern int sys_readwrite __P((void));
extern int sys_lseek __P((void));
extern int sys_chdir __P((void));
extern int sys_chroot __P((void));
extern int sys_mknod __P((void));
extern int sys_sync __P((void));
extern int sys_access __P((void));
extern int sys_chmod __P((void));
extern int sys_chown __P((void));
extern int sys_statfstat __P((void));
extern int sys_dup __P((void));
extern int sys_dup2 __P((void));
extern int sys_getset __P((void));
extern int sys_getfsys __P((void));
extern int sys_ioctl __P((void));
extern int sys_mountumount __P((void));
extern int sys_time __P((void));
extern int sys_stime __P((void));
extern int sys_times __P((void));
extern int sys_execve __P((void));
extern int sys_brk __P((void));
extern int sys_sbrk __P((void));
extern int sys_waitpid __P((void));
extern int sys_exit __P((void));
extern int sys_fork __P((void));
extern int sys_pause __P((void));
extern int sys_signal __P((void));
extern int sys_kill __P((void));
extern int sys_alarm __P((void));
extern int sys_utime __P((void));
extern int sys_reboot __P((void));
#ifdef UZIX_MODULE
extern void clear_module_reqs __P((int pid));
extern int sys_reg __P((void));
extern int sys_dereg __P((void));
extern int sys_callmodu __P((void));
extern int sys_repfmodu __P((void));
extern int sys_modreply __P((void));
#endif
#endif
#endif