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Length: 10979 (0x2ae3)
Types: TextFile
Notes: UNIX file
Names: »v86.h«
└─⟦a6ab2eb36⟧ Bits:30004042/kconfig3.imd SW95705I 386/ix Multi-user Release 1.2
└─⟦a6ab2eb36⟧ UNIX Filesystem
└─⟦this⟧ »kc/new/usr/include/sys/v86.h«
/*
** Move the following definition to proc.h stat code definitions
*/
#ident "@(#)v86.h 1.3 - 88/04/20"
#define NV86TASKS 20 /* Maximum number of V86 tasks */
#define V86VIRTSIZE 0x0100 /* Size of virtual 8086 in pages ( 1M bytes)*/
#define V86WRAPSIZE 0x0010 /* Size of copy/wrap in pages (64K bytes)*/
#define V86XTSSSIZE 0x0010 /* Size of Xtss in pages (64K bytes)*/
#define V86SIZE 0x0400 /* Size of v86 region ( 4M bytes)*/
/* Definitions for Lotus/Intel/Microsoft Expanded Memory Emulation
*/
#define V86EMM_PGSIZE 0x4000 /* Size of Expanded memory page */
#define V86EMM_LBASE 0x00200000 /* Expected lowest EMM logical page addr*/
#define V86EMM_LENGTH 0x00200000 /* Expected size EMM logical pages */
#define V86EMM_PBASE 0x000D0000 /* EMM physical page address */
#define V86EMM_PBASE0 0x000D0000 /* EMM physical page address */
#define V86EMM_PBASE1 0x000D4000 /* EMM physical page address */
#define V86EMM_PBASE2 0x000D8000 /* EMM physical page address */
#define V86EMM_PBASE3 0x000DC000 /* EMM physical page address */
#define V86EMM_NUMPGS 4 /* Number of EMM physical pages */
/* General definitions for a dual mode process
*/
#define XTSSADDR ((caddr_t)0x110000L) /* XTSS addr in user mem*/
#define ARPL 0x63 /* ARPL inst, V86 invalid opcode*/
#define V86_RCS 0xF000 /* Reset CS for V86 mode */
#define V86_RIP 0xFFF0 /* Reset IP for V86 mode */
#define V86_DELTA_NICE 10 /* Preferential nice for v86 */
#define V86_TIMER_BOUND 10 /* Pending ticks limit for ECT */
#define V86_SLICE 25 /* Default timeslice, >1 v86proc*/
#define V86_SLICE_SHIFT 3 /* Max shift for time slice */
#define V86_PRI_NORM 0 /* Normal priority state */
#define V86_PRI_LO 1 /* Low priority state, busywait */
#define V86_PRI_HI 2 /* Hi priority state, pseudorupt*/
#define V86_PRI_XHI 3 /* Extra high, urgent pseudorupt*/
#define V86_SHIFT_NORM 0 /* Timeslice shift for norm pri */
#define V86_SHIFT_LO V86_SLICE_SHIFT /* Timeslice shift for lo pri */
#define V86_SHIFT_HI V86_SLICE_SHIFT /* Timeslice shift for hi pri */
/* The maximum number of arguments that can be used for v86() system
** call is dependent on the maximum number of arguments allowed for
** the sysi86 call in sysent.c. Since the v86() system call is a sub-
** function (SI86V86) of the sysi86 call and v86() itself has sub-
** functions, the maximum arguments for each sub-function of the v86()
** system call is two less than the maximum allowed for the sysi86
** system call. The value defined here is assumed in the library.
*/
#define V86SC_MAXARGS 3 /* Includes sub-func # of v86() */
/* SI86V86 is a sub system call of the system call "sysi86". The following
** definitions are sub system calls for SI86V86 and are processed in v86.c
*/
#define V86SC_INIT 1 /* v86init() system call */
#define V86SC_SLEEP 2 /* v86sleep() system call */
#define V86SC_MEMFUNC 3 /* v86memfunc() system call */
#define V86SC_IOPL 4 /* v86iopriv () system call */
/*
** The V86 timer has a frequency of 18.2 times a second. The Unix
** timer has a frequency of 100 times a second. So the following
** value ensures that the ECT gets an interrupt at least as often
** as it needs one.
*/
#define V86TIMER 5 /* Every 50 ms (20 times a second) */
/* Software Interrupt mask bit array definitions
*/
#define V86_IMASKSIZE 256 /* Max number of software INTs */
#define V86_IMASKBITS ((V86_IMASKSIZE + 31) / 32)
/* # of bits for software INTs */
/* The offsets of members "xt_viflag", "xt_signo" and "xt_hdlr" are
** hard coded in the file "v86enter.s". So any changes to the struc-
** that changes these offsets have to be reflected in this file.
** This file is part of the ECT.
**
** NOTE: The value of "xt_intr_pin" should be 0xFF or 0.
*/
typedef struct v86xtss
{ struct tss386 xt_tss; /* Normal TSS structure */
unsigned int *xt_vflptr; /* Ptr to 8086 virtual flags */
unsigned char xt_magictrap; /* Saved byte of virt intr */
unsigned char xt_magicstat; /* Status of magic byte */
unsigned char xt_tslice_shft; /* Time slice shift requested */
unsigned char xt_intr_pin; /* Interrupt to virtual machine */
time_t xt_lbolt; /* Lightning bolt value */
unsigned int xt_viflag; /* Virtual interrupt flag */
unsigned int xt_vimask; /* Mask for virtual interrupts */
unsigned int xt_signo; /* Sig number on V86VI_SIGHDL */
int (* xt_hdlr)(); /* Sig handler for V86VI_SIGHDL */
unsigned int xt_timer_count; /* Number of pending timer ticks*/
unsigned int xt_timer_bound; /* Ticks before forcing ECT in */
uint xt_imaskbits[V86_IMASKBITS]; /* Bit map for software INTs */
unsigned int xt_oldbitmap[32]; /* For I/O bitmap on old ECTs */
unsigned char xt_magic[4]; /* XTSS version indicator */
unsigned int xt_viurgent; /* Mask for urgent interrupts */
unsigned int xt_vitoect; /* Mask for interrupts to ECT */
unsigned int xt_reserved[10]; /* Reserved for future expansion*/
} xtss_t;
/* Definitions for the field "xt_magicstat". The location "xt_magictrap"
** is valid only when "xt_magicstat" field is set to XT_MSTAT_OPSAVED.
*/
#define XT_MSTAT_NOPROCESS 0 /* Do not process virtual intr */
#define XT_MSTAT_PROCESS 1 /* Process virtual intr */
#define XT_MSTAT_OPSAVED 2 /* v86 program opcode saved */
#define XT_MSTAT_POSTING 3 /* Phoenix defined */
struct v86parm
{ xtss_t *xtssp; /* Ptr to XTSS in user data */
unsigned long szxtss; /* Length in bytes of XTSS */
unsigned char magic[4]; /* XTSS version indicator */
unsigned long szbitmap; /* Length in bytes of I/O bitmap*/
};
typedef struct v86memory
{ int vmem_cmd; /* Sub command for screen func */
paddr_t vmem_physaddr; /* Physical memory base for map */
caddr_t vmem_membase; /* Screen memory base */
int vmem_memlen; /* Length of screen memory */
} v86memory_t;
/* Definitions for the field "vmem_cmd".
*/
#define V86MEM_MAP 1 /* Map virt addr to physical */
#define V86MEM_TRACK 2 /* Track memory modifications */
#define V86MEM_UNTRACK 3 /* Untrack memory modifications */
#define V86MEM_UNMAP 4 /* Unmap virt addr */
#define V86MEM_EMM 5 /* LIM expanded memory emulation*/
#define V86MEM_GROW 6 /* Grow Lim expanded memory */
typedef struct v86dat
{ proc_t *vp_procp; /* Ptr to process's proc struc */
sel_t vp_oldtr; /* Old task register */
unsigned short vp_szxtss; /* Size of XTSS in user space */
xtss_t *vp_xtss; /* Address of nailed XTSS */
v86memory_t vp_mem; /* Memory map/track definitions */
long vp_emm[V86EMM_NUMPGS]; /* Current EMM regs emulation */
char vp_wakeup; /* Wakeup process on virt intr */
char vp_slice_shft; /* Last slice shift from xtss */
char vp_nice; /* Requested nice from sys call */
char vp_hpnice; /* Nice value for high priority */
char vp_pri_state; /* Priority state = hi,norm,lo */
} v86_t;
/* Virtual interrupt bit definitions for the field "vp_viflag".
** The low order 16 bits reflect the setting of the AT hardware
** interrupts. The high order 16 bits are used for other inter-
** rupts.
**
** NOTE: The value of V86VI_SIGHDL is hard coded in the file
** "v86enter.s". Any change to this value has to reflected in
** this file. This file is part of the ECT.
*/
#define V86VI_NONE 0x00000000 /* No interrupts */
#define V86VI_TIMER 0x00000001 /* Virtual timer interrupt */
#define V86VI_KBD 0x00000002 /* Scancode rcvd when buf empty */
#define V86VI_SLAVE 0x00000004 /* Can be reused when needed */
#define V86VI_SERIAL1 0x00000008 /* Serial port 1 state change */
#define V86VI_SERIAL0 0x00000010 /* Serial port 0 state change */
#define V86VI_PRL1 0x00000020 /* Parallel port 1 state change */
#define V86VI_MOUSE 0x00000020 /* Microsoft mouse */
#define V86VI_DISK 0x00000040 /* Fixed and floppy disk */
#define V86VI_PRL0 0x00000080 /* Parallel port 0 state change */
#define V86VI_RCLOCK 0x00000100 /* Realtime Clock interrupt */
#define V86VI_NET 0x00000200 /* Network interrupts */
#define V86VI_RSVD_1 0x00000400 /* Reserved 1 */
#define V86VI_RSVD_2 0x00000800 /* Reserved 2 */
#define V86VI_RSVD_3 0x00001000 /* Reserved 3 */
#define V86VI_COPROC 0x00002000 /* Coprocessor interrupt */
#define V86VI_FDISK 0x00004000 /* Fixed disk controller */
#define V86VI_RSVD_4 0x00008000 /* Reserved 4 */
#define V86VI_DIV0 0x00010000 /* Divide by 0 (vector 0) */
#define V86VI_SGLSTP 0x00020000 /* Single step intr (vector 1) */
#define V86VI_BRKPT 0x00040000 /* Break point intr (vector 3) */
#define V86VI_OVERFLOW 0x00080000 /* Overflow fault (vector 4) */
#define V86VI_BOUND 0x00100000 /* Bound exception (vector 5) */
#define V86VI_INVOP 0x00200000 /* Invalid opcode (vector 6) */
#define V86VI_SIGHDL 0x00400000 /* Virtual signal hdlr interrupt*/
#define V86VI_MEMORY 0x00800000 /* Tracking memory has changed */
#define V86VI_LBOLT 0x01000000 /* Lbolt value has changed */
/* Virtual interrupt subcodes for V86VI_SERIAL[01] interrupts. These values
** appear in the fields "xt_s[01]flag".
*/
#define V86SI_DATA 0x00000001 /* New data available from kbd */
#define V86SI_MODEM 0x00000002 /* Modem status line[s] changed */
#define V86_MAGIC0 'X' /* Byte for XTSS magic[0] */
#define V86_MAGIC1 'T' /* Byte for XTSS magic[1] */