| /* sim_defs.h: simulator definitions | |
| Copyright (c) 1993-2008, Robert M Supnik | |
| Permission is hereby granted, free of charge, to any person obtaining a | |
| copy of this software and associated documentation files (the "Software"), | |
| to deal in the Software without restriction, including without limitation | |
| the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
| and/or sell copies of the Software, and to permit persons to whom the | |
| Software is furnished to do so, subject to the following conditions: | |
| The above copyright notice and this permission notice shall be included in | |
| all copies or substantial portions of the Software. | |
| THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
| IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
| FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
| ROBERT M SUPNIK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER | |
| IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
| CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | |
| Except as contained in this notice, the name of Robert M Supnik shall not be | |
| used in advertising or otherwise to promote the sale, use or other dealings | |
| in this Software without prior written authorization from Robert M Supnik. | |
| 05-Jan-11 MP Added Asynch I/O support | |
| 18-Jan-11 MP Added log file reference count support | |
| 21-Jul-08 RMS Removed inlining support | |
| 28-May-08 RMS Added inlining support | |
| 28-Jun-07 RMS Added IA64 VMS support (from Norm Lastovica) | |
| 18-Jun-07 RMS Added UNIT_IDLE flag | |
| 18-Mar-07 RMS Added UNIT_TEXT flag | |
| 07-Mar-07 JDB Added DEBUG_PRJ macro | |
| 18-Oct-06 RMS Added limit check for clock synchronized keyboard waits | |
| 13-Jul-06 RMS Guarantee CBUFSIZE is at least 256 | |
| 07-Jan-06 RMS Added support for breakpoint spaces | |
| Added REG_FIT flag | |
| 16-Aug-05 RMS Fixed C++ declaration and cast problems | |
| 11-Mar-05 RMS Moved 64b data type definitions outside USE_INT64 | |
| 07-Feb-05 RMS Added assertion fail stop | |
| 05-Nov-04 RMS Added support for SHOW opt=val | |
| 20-Oct-04 RMS Converted all base types to typedefs | |
| 21-Sep-04 RMS Added switch to flag stop message printout | |
| 06-Feb-04 RMS Moved device and unit user flags fields (V3.2) | |
| RMS Added REG_VMAD | |
| 29-Dec-03 RMS Added output stall status | |
| 15-Jun-03 RMS Added register flag REG_VMIO | |
| 23-Apr-03 RMS Revised for 32b/64b t_addr | |
| 14-Mar-03 RMS Lengthened default serial output wait | |
| 31-Mar-03 RMS Added u5, u6 fields | |
| 18-Mar-03 RMS Added logical name support | |
| Moved magtape definitions to sim_tape.h | |
| Moved breakpoint definitions from scp.c | |
| 03-Mar-03 RMS Added sim_fsize | |
| 08-Feb-03 RMS Changed sim_os_sleep to void, added match_ext | |
| 05-Jan-03 RMS Added hidden switch definitions, device dyn memory support, | |
| parameters for function pointers, case sensitive SET support | |
| 22-Dec-02 RMS Added break flag | |
| 08-Oct-02 RMS Increased simulator error code space | |
| Added Telnet errors | |
| Added end of medium support | |
| Added help messages to CTAB | |
| Added flag and context fields to DEVICE | |
| Added restore flag masks | |
| Revised 64b definitions | |
| 02-May-02 RMS Removed log status codes | |
| 22-Apr-02 RMS Added magtape record length error | |
| 30-Dec-01 RMS Generalized timer package, added circular arrays | |
| 07-Dec-01 RMS Added breakpoint package | |
| 01-Dec-01 RMS Added read-only unit support, extended SET/SHOW features, | |
| improved error messages | |
| 24-Nov-01 RMS Added unit-based registers | |
| 27-Sep-01 RMS Added queue count prototype | |
| 17-Sep-01 RMS Removed multiple console support | |
| 07-Sep-01 RMS Removed conditional externs on function prototypes | |
| 31-Aug-01 RMS Changed int64 to t_int64 for Windoze | |
| 17-Jul-01 RMS Added additional function prototypes | |
| 27-May-01 RMS Added multiple console support | |
| 15-May-01 RMS Increased string buffer size | |
| 25-Feb-01 RMS Revisions for V2.6 | |
| 15-Oct-00 RMS Editorial revisions for V2.5 | |
| 11-Jul-99 RMS Added unsigned int data types | |
| 14-Apr-99 RMS Converted t_addr to unsigned | |
| 04-Oct-98 RMS Additional definitions for V2.4 | |
| The interface between the simulator control package (SCP) and the | |
| simulator consists of the following routines and data structures | |
| sim_name simulator name string | |
| sim_devices[] array of pointers to simulated devices | |
| sim_PC pointer to saved PC register descriptor | |
| sim_interval simulator interval to next event | |
| sim_stop_messages[] array of pointers to stop messages | |
| sim_instr() instruction execution routine | |
| sim_load() binary loader routine | |
| sim_emax maximum number of words in an instruction | |
| In addition, the simulator must supply routines to print and parse | |
| architecture specific formats | |
| print_sym print symbolic output | |
| parse_sym parse symbolic input | |
| */ | |
| #ifndef SIM_DEFS_H_ | |
| #define SIM_DEFS_H_ 0 | |
| #include <stddef.h> | |
| #include <stdlib.h> | |
| #include <stdio.h> | |
| #include <stdarg.h> | |
| #include <string.h> | |
| #include <errno.h> | |
| #include <limits.h> | |
| #ifdef _WIN32 | |
| #include <winsock2.h> | |
| #undef PACKED /* avoid macro name collision */ | |
| #undef ERROR /* avoid macro name collision */ | |
| #undef MEM_MAPPED /* avoid macro name collision */ | |
| #endif | |
| /* avoid macro names collisions */ | |
| #ifdef MAX | |
| #undef MAX | |
| #endif | |
| #ifdef MIN | |
| #undef MIN | |
| #endif | |
| #ifdef PMASK | |
| #undef PMASK | |
| #endif | |
| #ifdef RS | |
| #undef RS | |
| #endif | |
| #ifndef TRUE | |
| #define TRUE 1 | |
| #define FALSE 0 | |
| #endif | |
| /* Length specific integer declarations */ | |
| #if defined (VMS) | |
| #include <ints.h> | |
| #else | |
| typedef signed char int8; | |
| typedef signed short int16; | |
| typedef signed int int32; | |
| typedef unsigned char uint8; | |
| typedef unsigned short uint16; | |
| typedef unsigned int uint32; | |
| #endif | |
| typedef int t_stat; /* status */ | |
| typedef int t_bool; /* boolean */ | |
| /* 64b integers */ | |
| #if defined (__GNUC__) /* GCC */ | |
| typedef signed long long t_int64; | |
| typedef unsigned long long t_uint64; | |
| #elif defined (_WIN32) /* Windows */ | |
| typedef signed __int64 t_int64; | |
| typedef unsigned __int64 t_uint64; | |
| #elif (defined (__ALPHA) || defined (__ia64)) && defined (VMS) /* 64b VMS */ | |
| typedef signed __int64 t_int64; | |
| typedef unsigned __int64 t_uint64; | |
| #elif defined (__ALPHA) && defined (__unix__) /* Alpha UNIX */ | |
| typedef signed long t_int64; | |
| typedef unsigned long t_uint64; | |
| #else /* default */ | |
| #define t_int64 signed long long | |
| #define t_uint64 unsigned long long | |
| #endif /* end 64b */ | |
| #ifndef INT64_C | |
| #define INT64_C(x) x ## LL | |
| #endif | |
| #if defined (USE_INT64) /* 64b data */ | |
| typedef t_int64 t_svalue; /* signed value */ | |
| typedef t_uint64 t_value; /* value */ | |
| #else /* 32b data */ | |
| typedef int32 t_svalue; | |
| typedef uint32 t_value; | |
| #endif /* end 64b data */ | |
| #if defined (USE_INT64) && defined (USE_ADDR64) /* 64b address */ | |
| typedef t_uint64 t_addr; | |
| #define T_ADDR_W 64 | |
| #else /* 32b address */ | |
| typedef uint32 t_addr; | |
| #define T_ADDR_W 32 | |
| #endif /* end 64b address */ | |
| /* Stubs for inlining */ | |
| #define SIM_INLINE | |
| /* System independent definitions */ | |
| #define FLIP_SIZE (1 << 16) /* flip buf size */ | |
| #if !defined (PATH_MAX) /* usually in limits */ | |
| #define PATH_MAX 512 | |
| #endif | |
| #if (PATH_MAX >= 128) | |
| #define CBUFSIZE (128 + PATH_MAX) /* string buf size */ | |
| #else | |
| #define CBUFSIZE 256 | |
| #endif | |
| /* Breakpoint spaces definitions */ | |
| #define SIM_BKPT_N_SPC 64 /* max number spaces */ | |
| #define SIM_BKPT_V_SPC 26 /* location in arg */ | |
| /* Extended switch definitions (bits >= 26) */ | |
| #define SIM_SW_HIDE (1u << 26) /* enable hiding */ | |
| #define SIM_SW_REST (1u << 27) /* attach/restore */ | |
| #define SIM_SW_REG (1u << 28) /* register value */ | |
| #define SIM_SW_STOP (1u << 29) /* stop message */ | |
| /* Simulator status codes | |
| 0 ok | |
| 1 - (SCPE_BASE - 1) simulator specific | |
| SCPE_BASE - n general | |
| */ | |
| #define SCPE_OK 0 /* normal return */ | |
| #define SCPE_BASE 64 /* base for messages */ | |
| #define SCPE_NXM (SCPE_BASE + 0) /* nxm */ | |
| #define SCPE_UNATT (SCPE_BASE + 1) /* no file */ | |
| #define SCPE_IOERR (SCPE_BASE + 2) /* I/O error */ | |
| #define SCPE_CSUM (SCPE_BASE + 3) /* loader cksum */ | |
| #define SCPE_FMT (SCPE_BASE + 4) /* loader format */ | |
| #define SCPE_NOATT (SCPE_BASE + 5) /* not attachable */ | |
| #define SCPE_OPENERR (SCPE_BASE + 6) /* open error */ | |
| #define SCPE_MEM (SCPE_BASE + 7) /* alloc error */ | |
| #define SCPE_ARG (SCPE_BASE + 8) /* argument error */ | |
| #define SCPE_STEP (SCPE_BASE + 9) /* step expired */ | |
| #define SCPE_UNK (SCPE_BASE + 10) /* unknown command */ | |
| #define SCPE_RO (SCPE_BASE + 11) /* read only */ | |
| #define SCPE_INCOMP (SCPE_BASE + 12) /* incomplete */ | |
| #define SCPE_STOP (SCPE_BASE + 13) /* sim stopped */ | |
| #define SCPE_EXIT (SCPE_BASE + 14) /* sim exit */ | |
| #define SCPE_TTIERR (SCPE_BASE + 15) /* console tti err */ | |
| #define SCPE_TTOERR (SCPE_BASE + 16) /* console tto err */ | |
| #define SCPE_EOF (SCPE_BASE + 17) /* end of file */ | |
| #define SCPE_REL (SCPE_BASE + 18) /* relocation error */ | |
| #define SCPE_NOPARAM (SCPE_BASE + 19) /* no parameters */ | |
| #define SCPE_ALATT (SCPE_BASE + 20) /* already attached */ | |
| #define SCPE_TIMER (SCPE_BASE + 21) /* hwre timer err */ | |
| #define SCPE_SIGERR (SCPE_BASE + 22) /* signal err */ | |
| #define SCPE_TTYERR (SCPE_BASE + 23) /* tty setup err */ | |
| #define SCPE_SUB (SCPE_BASE + 24) /* subscript err */ | |
| #define SCPE_NOFNC (SCPE_BASE + 25) /* func not imp */ | |
| #define SCPE_UDIS (SCPE_BASE + 26) /* unit disabled */ | |
| #define SCPE_NORO (SCPE_BASE + 27) /* rd only not ok */ | |
| #define SCPE_INVSW (SCPE_BASE + 28) /* invalid switch */ | |
| #define SCPE_MISVAL (SCPE_BASE + 29) /* missing value */ | |
| #define SCPE_2FARG (SCPE_BASE + 30) /* too few arguments */ | |
| #define SCPE_2MARG (SCPE_BASE + 31) /* too many arguments */ | |
| #define SCPE_NXDEV (SCPE_BASE + 32) /* nx device */ | |
| #define SCPE_NXUN (SCPE_BASE + 33) /* nx unit */ | |
| #define SCPE_NXREG (SCPE_BASE + 34) /* nx register */ | |
| #define SCPE_NXPAR (SCPE_BASE + 35) /* nx parameter */ | |
| #define SCPE_NEST (SCPE_BASE + 36) /* nested DO */ | |
| #define SCPE_IERR (SCPE_BASE + 37) /* internal error */ | |
| #define SCPE_MTRLNT (SCPE_BASE + 38) /* tape rec lnt error */ | |
| #define SCPE_LOST (SCPE_BASE + 39) /* Telnet conn lost */ | |
| #define SCPE_TTMO (SCPE_BASE + 40) /* Telnet conn timeout */ | |
| #define SCPE_STALL (SCPE_BASE + 41) /* Telnet conn stall */ | |
| #define SCPE_AFAIL (SCPE_BASE + 42) /* assert failed */ | |
| #define SCPE_MAX_ERR (SCPE_BASE + 43) /* Maximum SCPE Error Value */ | |
| #define SCPE_KFLAG 0x1000 /* tti data flag */ | |
| #define SCPE_BREAK 0x2000 /* tti break flag */ | |
| #define SCPE_NOMESSAGE 0x10000000 /* message display supression flag */ | |
| #define SCPE_BARE_STATUS(stat) ((stat) & ~(SCPE_NOMESSAGE|SCPE_KFLAG|SCPE_BREAK)) | |
| /* Print value format codes */ | |
| #define PV_RZRO 0 /* right, zero fill */ | |
| #define PV_RSPC 1 /* right, space fill */ | |
| #define PV_LEFT 2 /* left justify */ | |
| /* Default timing parameters */ | |
| #define KBD_POLL_WAIT 5000 /* keyboard poll */ | |
| #define KBD_MAX_WAIT 500000 | |
| #define SERIAL_IN_WAIT 100 /* serial in time */ | |
| #define SERIAL_OUT_WAIT 100 /* serial output */ | |
| #define NOQUEUE_WAIT 1000000 /* min check time */ | |
| #define KBD_LIM_WAIT(x) (((x) > KBD_MAX_WAIT)? KBD_MAX_WAIT: (x)) | |
| #define KBD_WAIT(w,s) ((w)? w: KBD_LIM_WAIT (s)) | |
| /* Convert switch letter to bit mask */ | |
| #define SWMASK(x) (1u << (((int) (x)) - ((int) 'A'))) | |
| /* String match - at least one character required */ | |
| #define MATCH_CMD(ptr,cmd) ((NULL == (ptr)) || (!*(ptr)) || strncmp ((ptr), (cmd), strlen (ptr))) | |
| /* End of Linked List/Queue value */ | |
| /* Chosen for 2 reasons: */ | |
| /* 1 - to not be NULL, this allowing the NULL value to */ | |
| /* indicate inclusion on a list */ | |
| /* and */ | |
| /* 2 - to not be a valid/possible pointer (alignment) */ | |
| #define QUEUE_LIST_END ((void *)1) | |
| /* Device data structure */ | |
| struct sim_device { | |
| char *name; /* name */ | |
| struct sim_unit *units; /* units */ | |
| struct sim_reg *registers; /* registers */ | |
| struct sim_mtab *modifiers; /* modifiers */ | |
| uint32 numunits; /* #units */ | |
| uint32 aradix; /* address radix */ | |
| uint32 awidth; /* address width */ | |
| uint32 aincr; /* addr increment */ | |
| uint32 dradix; /* data radix */ | |
| uint32 dwidth; /* data width */ | |
| t_stat (*examine)(t_value *v, t_addr a, struct sim_unit *up, | |
| int32 sw); /* examine routine */ | |
| t_stat (*deposit)(t_value v, t_addr a, struct sim_unit *up, | |
| int32 sw); /* deposit routine */ | |
| t_stat (*reset)(struct sim_device *dp);/* reset routine */ | |
| t_stat (*boot)(int32 u, struct sim_device *dp); | |
| /* boot routine */ | |
| t_stat (*attach)(struct sim_unit *up, char *cp); | |
| /* attach routine */ | |
| t_stat (*detach)(struct sim_unit *up); /* detach routine */ | |
| void *ctxt; /* context */ | |
| uint32 flags; /* flags */ | |
| uint32 dctrl; /* debug control */ | |
| struct sim_debtab *debflags; /* debug flags */ | |
| t_stat (*msize)(struct sim_unit *up, int32 v, char *cp, void *dp); | |
| /* mem size routine */ | |
| char *lname; /* logical name */ | |
| t_stat (*help)(FILE *st, struct sim_device *dptr, | |
| struct sim_unit *uptr, int32 flag, char *cptr); | |
| /* help */ | |
| t_stat (*attach_help)(FILE *st, struct sim_device *dptr, | |
| struct sim_unit *uptr, int32 flag, char *cptr); | |
| /* attach help */ | |
| void *help_ctx; /* Context available to help routines */ | |
| char *(*description)(struct sim_device *dptr); | |
| /* Device Description */ | |
| }; | |
| /* Device flags */ | |
| #define DEV_V_DIS 0 /* dev disabled */ | |
| #define DEV_V_DISABLE 1 /* dev disable-able */ | |
| #define DEV_V_DYNM 2 /* mem size dynamic */ | |
| #define DEV_V_DEBUG 3 /* debug capability */ | |
| #define DEV_V_TYPE 4 /* Attach type */ | |
| #define DEV_S_TYPE 3 /* Width of Type Field */ | |
| #define DEV_V_SECTORS 7 /* Unit Capacity is in 512byte sectors */ | |
| #define DEV_V_UF_31 12 /* user flags, V3.1 */ | |
| #define DEV_V_UF 16 /* user flags */ | |
| #define DEV_V_RSV 31 /* reserved */ | |
| #define DEV_DIS (1 << DEV_V_DIS) /* device can be set enabled or disabled */ | |
| #define DEV_DISABLE (1 << DEV_V_DISABLE) /* device is currently disabled */ | |
| #define DEV_DYNM (1 << DEV_V_DYNM) /* device requires call on msize routine to change memory size */ | |
| #define DEV_DEBUG (1 << DEV_V_DEBUG) /* device supports SET DEBUG command */ | |
| #define DEV_SECTORS (1 << DEV_V_SECTORS) /* capacity is 512 byte sectors */ | |
| #define DEV_NET 0 /* Deprecated - meaningless */ | |
| #define DEV_TYPEMASK (((1 << DEV_S_TYPE) - 1) << DEV_V_TYPE) | |
| #define DEV_DISK (1 << DEV_V_TYPE) /* sim_disk Attach */ | |
| #define DEV_TAPE (2 << DEV_V_TYPE) /* sim_tape Attach */ | |
| #define DEV_MUX (3 << DEV_V_TYPE) /* sim_tmxr Attach */ | |
| #define DEV_ETHER (4 << DEV_V_TYPE) /* Ethernet Device */ | |
| #define DEV_DISPLAY (5 << DEV_V_TYPE) /* Display Device */ | |
| #define DEV_TYPE(dptr) ((dptr)->flags & DEV_TYPEMASK) | |
| #define DEV_UFMASK_31 (((1u << DEV_V_RSV) - 1) & ~((1u << DEV_V_UF_31) - 1)) | |
| #define DEV_UFMASK (((1u << DEV_V_RSV) - 1) & ~((1u << DEV_V_UF) - 1)) | |
| #define DEV_RFLAGS (DEV_UFMASK|DEV_DIS) /* restored flags */ | |
| /* Unit data structure | |
| Parts of the unit structure are device specific, that is, they are | |
| not referenced by the simulator control package and can be freely | |
| used by device simulators. Fields starting with 'buf', and flags | |
| starting with 'UF', are device specific. The definitions given here | |
| are for a typical sequential device. | |
| */ | |
| struct sim_unit { | |
| struct sim_unit *next; /* next active */ | |
| t_stat (*action)(struct sim_unit *up); /* action routine */ | |
| char *filename; /* open file name */ | |
| FILE *fileref; /* file reference */ | |
| void *filebuf; /* memory buffer */ | |
| uint32 hwmark; /* high water mark */ | |
| int32 time; /* time out */ | |
| uint32 flags; /* flags */ | |
| uint32 dynflags; /* dynamic flags */ | |
| t_addr capac; /* capacity */ | |
| t_addr pos; /* file position */ | |
| void (*io_flush)(struct sim_unit *up);/* io flush routine */ | |
| uint32 iostarttime; /* I/O start time */ | |
| int32 buf; /* buffer */ | |
| int32 wait; /* wait */ | |
| int32 u3; /* device specific */ | |
| int32 u4; /* device specific */ | |
| int32 u5; /* device specific */ | |
| int32 u6; /* device specific */ | |
| void *up7; /* device specific */ | |
| void *up8; /* device specific */ | |
| #ifdef SIM_ASYNCH_IO | |
| void (*a_check_completion)(struct sim_unit *); | |
| t_bool (*a_is_active)(struct sim_unit *); | |
| void (*a_cancel)(struct sim_unit *); | |
| struct sim_unit *a_next; /* next asynch active */ | |
| int32 a_event_time; | |
| t_stat (*a_activate_call)(struct sim_unit *, int32); | |
| /* Asynchronous Polling control */ | |
| /* These fields should only be referenced when holding the sim_tmxr_poll_lock */ | |
| t_bool a_polling_now; /* polling active flag */ | |
| int32 a_poll_waiter_count; /* count of polling threads */ | |
| /* waiting for this unit */ | |
| /* Asynchronous Timer control */ | |
| double a_due_time; /* due time for timer event */ | |
| double a_skew; /* accumulated skew being corrected */ | |
| double a_last_fired_time; /* time last event fired */ | |
| int32 a_usec_delay; /* time delay for timer event */ | |
| #endif | |
| }; | |
| /* Unit flags */ | |
| #define UNIT_V_UF_31 12 /* dev spec, V3.1 */ | |
| #define UNIT_V_UF 16 /* device specific */ | |
| #define UNIT_V_RSV 31 /* reserved!! */ | |
| #define UNIT_ATTABLE 0000001 /* attachable */ | |
| #define UNIT_RO 0000002 /* read only */ | |
| #define UNIT_FIX 0000004 /* fixed capacity */ | |
| #define UNIT_SEQ 0000010 /* sequential */ | |
| #define UNIT_ATT 0000020 /* attached */ | |
| #define UNIT_BINK 0000040 /* K = power of 2 */ | |
| #define UNIT_BUFABLE 0000100 /* bufferable */ | |
| #define UNIT_MUSTBUF 0000200 /* must buffer */ | |
| #define UNIT_BUF 0000400 /* buffered */ | |
| #define UNIT_ROABLE 0001000 /* read only ok */ | |
| #define UNIT_DISABLE 0002000 /* disable-able */ | |
| #define UNIT_DIS 0004000 /* disabled */ | |
| #define UNIT_IDLE 0040000 /* idle eligible */ | |
| /* Unused/meaningless flags */ | |
| #define UNIT_TEXT 0000000 /* text mode - no effect */ | |
| #define UNIT_UFMASK_31 (((1u << UNIT_V_RSV) - 1) & ~((1u << UNIT_V_UF_31) - 1)) | |
| #define UNIT_UFMASK (((1u << UNIT_V_RSV) - 1) & ~((1u << UNIT_V_UF) - 1)) | |
| #define UNIT_RFLAGS (UNIT_UFMASK|UNIT_DIS) /* restored flags */ | |
| /* Unit dynamic flags (dynflags) */ | |
| /* These flags are only set dynamically */ | |
| #define UNIT_ATTMULT 0000001 /* Allow multiple attach commands */ | |
| #define UNIT_TM_POLL 0000002 /* TMXR Polling unit */ | |
| #define UNIT_NO_FIO 0000004 /* fileref is NOT a FILE * */ | |
| struct sim_bitfield { | |
| char *name; /* field name */ | |
| uint32 offset; /* starting bit */ | |
| uint32 width; /* width */ | |
| const char **valuenames; /* map of values to strings */ | |
| const char *format; /* value format string */ | |
| }; | |
| /* Register data structure */ | |
| struct sim_reg { | |
| char *name; /* name */ | |
| void *loc; /* location */ | |
| uint32 radix; /* radix */ | |
| uint32 width; /* width */ | |
| uint32 offset; /* starting bit */ | |
| uint32 depth; /* save depth */ | |
| char *desc; /* description */ | |
| struct sim_bitfield *fields; /* bit fields */ | |
| uint32 flags; /* flags */ | |
| uint32 qptr; /* circ q ptr */ | |
| }; | |
| #define REG_FMT 00003 /* see PV_x */ | |
| #define REG_RO 00004 /* read only */ | |
| #define REG_HIDDEN 00010 /* hidden */ | |
| #define REG_NZ 00020 /* must be non-zero */ | |
| #define REG_UNIT 00040 /* in unit struct */ | |
| #define REG_CIRC 00100 /* circular array */ | |
| #define REG_VMIO 00200 /* use VM data print/parse */ | |
| #define REG_VMAD 00400 /* use VM addr print/parse */ | |
| #define REG_FIT 01000 /* fit access to size */ | |
| #define REG_HRO (REG_RO | REG_HIDDEN) /* hidden, read only */ | |
| /* Command tables, base and alternate formats */ | |
| struct sim_ctab { | |
| char *name; /* name */ | |
| t_stat (*action)(int32 flag, char *cptr); | |
| /* action routine */ | |
| int32 arg; /* argument */ | |
| char *help; /* help string */ | |
| void (*message)(const char *unechoed_cmdline, t_stat stat); | |
| /* message printing routine */ | |
| }; | |
| struct sim_c1tab { | |
| char *name; /* name */ | |
| t_stat (*action)(struct sim_device *dptr, struct sim_unit *uptr, | |
| int32 flag, char *cptr); /* action routine */ | |
| int32 arg; /* argument */ | |
| char *help; /* help string */ | |
| }; | |
| struct sim_shtab { | |
| char *name; /* name */ | |
| t_stat (*action)(FILE *st, struct sim_device *dptr, | |
| struct sim_unit *uptr, int32 flag, char *cptr); | |
| int32 arg; /* argument */ | |
| char *help; /* help string */ | |
| }; | |
| /* Modifier table - only extended entries have disp, reg, or flags */ | |
| struct sim_mtab { | |
| uint32 mask; /* mask */ | |
| uint32 match; /* match */ | |
| char *pstring; /* print string */ | |
| char *mstring; /* match string */ | |
| t_stat (*valid)(struct sim_unit *up, int32 v, char *cp, void *dp); | |
| /* validation routine */ | |
| t_stat (*disp)(FILE *st, struct sim_unit *up, int32 v, void *dp); | |
| /* display routine */ | |
| void *desc; /* value descriptor */ | |
| /* REG * if MTAB_VAL */ | |
| /* int * if not */ | |
| char *help; /* help string */ | |
| }; | |
| /* mtab mask flag bits */ | |
| /* NOTE: MTAB_VALR and MTAB_VALO are only used to display help */ | |
| #define MTAB_XTD (1u << UNIT_V_RSV) /* ext entry flag */ | |
| #define MTAB_VDV (0001 | MTAB_XTD) /* valid for dev */ | |
| #define MTAB_VUN (0002 | MTAB_XTD) /* valid for unit */ | |
| #define MTAB_VALR (0004 | MTAB_XTD) /* takes a value (required) */ | |
| #define MTAB_VALO (0010 | MTAB_XTD) /* takes a value (optional) */ | |
| #define MTAB_NMO (0020 | MTAB_XTD) /* only if named */ | |
| #define MTAB_NC (0040 | MTAB_XTD) /* no UC conversion */ | |
| #define MTAB_QUOTE (0100 | MTAB_XTD) /* quoted string */ | |
| #define MTAB_SHP (0200 | MTAB_XTD) /* show takes parameter */ | |
| #define MODMASK(mptr,flag) (((mptr)->mask & (uint32)(flag)) == (uint32)(flag))/* flag mask test */ | |
| /* Search table */ | |
| struct sim_schtab { | |
| int32 logic; /* logical operator */ | |
| int32 boolop; /* boolean operator */ | |
| t_value mask; /* mask for logical */ | |
| t_value comp; /* comparison for boolean */ | |
| }; | |
| /* Breakpoint table */ | |
| struct sim_brktab { | |
| t_addr addr; /* address */ | |
| int32 typ; /* mask of types */ | |
| int32 cnt; /* proceed count */ | |
| char *act; /* action string */ | |
| }; | |
| /* Debug table */ | |
| struct sim_debtab { | |
| char *name; /* control name */ | |
| uint32 mask; /* control bit */ | |
| }; | |
| #define DEBUG_PRS(d) (sim_deb && d.dctrl) | |
| #define DEBUG_PRD(d) (sim_deb && d->dctrl) | |
| #define DEBUG_PRI(d,m) (sim_deb && (d.dctrl & (m))) | |
| #define DEBUG_PRJ(d,m) (sim_deb && (d->dctrl & (m))) | |
| #define SIM_DBG_EVENT 0x10000 | |
| #define SIM_DBG_ACTIVATE 0x20000 | |
| #define SIM_DBG_AIO_QUEUE 0x40000 | |
| /* File Reference */ | |
| struct sim_fileref { | |
| char name[CBUFSIZE]; /* file name */ | |
| FILE *file; /* file handle */ | |
| int32 refcount; /* reference count */ | |
| }; | |
| /* The following macros define structure contents */ | |
| #define UDATA(act,fl,cap) NULL,act,NULL,NULL,NULL,0,0,(fl),0,(cap),0,NULL,0,0 | |
| #if defined (__STDC__) || defined (_WIN32) | |
| #define ORDATA(nm,loc,wd) #nm, &(loc), 8, (wd), 0, 1, NULL, NULL | |
| #define DRDATA(nm,loc,wd) #nm, &(loc), 10, (wd), 0, 1, NULL, NULL | |
| #define HRDATA(nm,loc,wd) #nm, &(loc), 16, (wd), 0, 1, NULL, NULL | |
| #define FLDATA(nm,loc,pos) #nm, &(loc), 2, 1, (pos), 1, NULL, NULL | |
| #define GRDATA(nm,loc,rdx,wd,pos) #nm, &(loc), (rdx), (wd), (pos), 1, NULL, NULL | |
| #define BRDATA(nm,loc,rdx,wd,dep) #nm, (loc), (rdx), (wd), 0, (dep), NULL, NULL | |
| #define URDATA(nm,loc,rdx,wd,off,dep,fl) \ | |
| #nm, &(loc), (rdx), (wd), (off), (dep), NULL, NULL, ((fl) | REG_UNIT) | |
| #define ORDATAD(nm,loc,wd,desc) #nm, &(loc), 8, (wd), 0, 1, (desc), NULL | |
| #define DRDATAD(nm,loc,wd,desc) #nm, &(loc), 10, (wd), 0, 1, (desc), NULL | |
| #define HRDATAD(nm,loc,wd,desc) #nm, &(loc), 16, (wd), 0, 1, (desc), NULL | |
| #define FLDATAD(nm,loc,pos,desc) #nm, &(loc), 2, 1, (pos), 1, (desc), NULL | |
| #define GRDATAD(nm,loc,rdx,wd,pos,desc) #nm, &(loc), (rdx), (wd), (pos), 1, (desc), NULL | |
| #define BRDATAD(nm,loc,rdx,wd,dep,desc) #nm, (loc), (rdx), (wd), 0, (dep), (desc), NULL | |
| #define URDATAD(nm,loc,rdx,wd,off,dep,fl,desc) \ | |
| #nm, &(loc), (rdx), (wd), (off), (dep), (desc), NULL, ((fl) | REG_UNIT) | |
| #define ORDATADF(nm,loc,wd,desc,flds) #nm, &(loc), 8, (wd), 0, 1, (desc), (flds) | |
| #define DRDATADF(nm,loc,wd,desc,flds) #nm, &(loc), 10, (wd), 0, 1, (desc), (flds) | |
| #define HRDATADF(nm,loc,wd,desc,flds) #nm, &(loc), 16, (wd), 0, 1, (desc), (flds) | |
| #define FLDATADF(nm,loc,pos,desc,flds) #nm, &(loc), 2, 1, (pos), 1, (desc), (flds) | |
| #define GRDATADF(nm,loc,rdx,wd,pos,desc,flds) #nm, &(loc), (rdx), (wd), (pos), 1, (desc), (flds) | |
| #define BRDATADF(nm,loc,rdx,wd,dep,desc,flds) #nm, (loc), (rdx), (wd), 0, (dep), (desc), (flds) | |
| #define URDATADF(nm,loc,rdx,wd,off,dep,fl,desc,flds) \ | |
| #nm, &(loc), (rdx), (wd), (off), (dep), (desc), (flds), ((fl) | REG_UNIT) | |
| #define BIT(nm) {#nm, 0xffffffff, 1} /* Single Bit definition */ | |
| #define BITNC {"", 0xffffffff, 1} /* Don't care Bit definition */ | |
| #define BITF(nm,sz) {#nm, 0xffffffff, sz} /* Bit Field definition */ | |
| #define BITNCF(sz) {"", 0xffffffff, sz} /* Don't care Bit Field definition */ | |
| #define BITFFMT(nm,sz,fmt) {#nm, 0xffffffff, sz, NULL, #fmt}/* Bit Field definition with Output format */ | |
| #define BITFNAM(nm,sz,names) {#nm, 0xffffffff, sz, names} /* Bit Field definition with value->name map */ | |
| #else | |
| #define ORDATA(nm,loc,wd) "nm", &(loc), 8, (wd), 0, 1, NULL, NULL | |
| #define DRDATA(nm,loc,wd) "nm", &(loc), 10, (wd), 0, 1, NULL, NULL | |
| #define HRDATA(nm,loc,wd) "nm", &(loc), 16, (wd), 0, 1, NULL, NULL | |
| #define FLDATA(nm,loc,pos) "nm", &(loc), 2, 1, (pos), 1, NULL, NULL | |
| #define GRDATA(nm,loc,rdx,wd,pos) "nm", &(loc), (rdx), (wd), (pos), 1, NULL, NULL | |
| #define BRDATA(nm,loc,rdx,wd,dep) "nm", (loc), (rdx), (wd), 0, (dep), NULL, NULL | |
| #define URDATA(nm,loc,rdx,wd,off,dep,fl) \ | |
| "nm", &(loc), (rdx), (wd), (off), (dep), NULL, NULL, ((fl) | REG_UNIT) | |
| #define ORDATAD(nm,loc,wd,desc) "nm", &(loc), 8, (wd), 0, 1, (desc), NULL | |
| #define DRDATAD(nm,loc,wd,desc) "nm", &(loc), 10, (wd), 0, 1, (desc), NULL | |
| #define HRDATAD(nm,loc,wd,desc) "nm", &(loc), 16, (wd), 0, 1, (desc), NULL | |
| #define FLDATAD(nm,loc,pos,desc) "nm", &(loc), 2, 1, (pos), 1, (desc), NULL | |
| #define GRDATAD(nm,loc,rdx,wd,pos,desc) "nm", &(loc), (rdx), (wd), (pos), 1, (desc), NULL | |
| #define BRDATAD(nm,loc,rdx,wd,dep,desc) "nm", (loc), (rdx), (wd), 0, (dep), (desc), NULL | |
| #define URDATAD(nm,loc,rdx,wd,off,dep,fl,desc) \ | |
| "nm", &(loc), (rdx), (wd), (off), (dep), (desc), NULL, ((fl) | REG_UNIT) | |
| #define ORDATADF(nm,loc,wd,desc,flds) "nm", &(loc), 8, (wd), 0, 1, (desc), (flds) | |
| #define DRDATADF(nm,loc,wd,desc,flds) "nm", &(loc), 10, (wd), 0, 1, (desc), (flds) | |
| #define HRDATADF(nm,loc,wd,desc,flds) "nm", &(loc), 16, (wd), 0, 1, (desc), (flds) | |
| #define FLDATADF(nm,loc,pos,desc,flds) "nm", &(loc), 2, 1, (pos), 1, (desc), (flds) | |
| #define GRDATADF(nm,loc,rdx,wd,pos,desc,flds) "nm", &(loc), (rdx), (wd), (pos), 1, (desc), (flds) | |
| #define BRDATADF(nm,loc,rdx,wd,dep,desc,flds) "nm", (loc), (rdx), (wd), 0, (dep), (desc), (flds) | |
| #define URDATADF(nm,loc,rdx,wd,off,dep,fl,desc,flds) \ | |
| "nm", &(loc), (rdx), (wd), (off), (dep), (desc), (flds), ((fl) | REG_UNIT) | |
| #define BIT(nm) {"nm", 0xffffffff, 1} /* Single Bit definition */ | |
| #define BITNC {"", 0xffffffff, 1} /* Don't care Bit definition */ | |
| #define BITF(nm,sz) {"nm", 0xffffffff, sz} /* Bit Field definition */ | |
| #define BITNCF(sz) {"", 0xffffffff, sz} /* Don't care Bit Field definition */ | |
| #define BITFFMT(nm,sz,fmt) {"nm", 0xffffffff, sz, NULL, "fmt"}/* Bit Field definition with Output format */ | |
| #define BITFNAM(nm,sz,names) {"nm", 0xffffffff, sz, names} /* Bit Field definition with value->name map */ | |
| #endif | |
| #define ENDBITS {NULL} /* end of bitfield list */ | |
| /* Typedefs for principal structures */ | |
| typedef struct sim_device DEVICE; | |
| typedef struct sim_unit UNIT; | |
| typedef struct sim_reg REG; | |
| typedef struct sim_ctab CTAB; | |
| typedef struct sim_c1tab C1TAB; | |
| typedef struct sim_shtab SHTAB; | |
| typedef struct sim_mtab MTAB; | |
| typedef struct sim_schtab SCHTAB; | |
| typedef struct sim_brktab BRKTAB; | |
| typedef struct sim_debtab DEBTAB; | |
| typedef struct sim_fileref FILEREF; | |
| typedef struct sim_bitfield BITFIELD; | |
| /* Function prototypes */ | |
| #include "scp.h" | |
| #include "sim_console.h" | |
| #include "sim_timer.h" | |
| #include "sim_fio.h" | |
| /* Asynch/Threaded I/O support */ | |
| #if defined (SIM_ASYNCH_IO) | |
| #include <pthread.h> | |
| extern pthread_mutex_t sim_asynch_lock; | |
| extern pthread_cond_t sim_asynch_wake; | |
| extern pthread_mutex_t sim_timer_lock; | |
| extern pthread_cond_t sim_timer_wake; | |
| extern t_bool sim_timer_event_canceled; | |
| extern int32 sim_tmxr_poll_count; | |
| extern pthread_cond_t sim_tmxr_poll_cond; | |
| extern pthread_mutex_t sim_tmxr_poll_lock; | |
| extern pthread_t sim_asynch_main_threadid; | |
| extern UNIT * volatile sim_asynch_queue; | |
| extern UNIT * volatile sim_wallclock_queue; | |
| extern UNIT * volatile sim_wallclock_entry; | |
| extern UNIT * volatile sim_clock_cosched_queue; | |
| extern volatile t_bool sim_idle_wait; | |
| extern int32 sim_asynch_check; | |
| extern int32 sim_asynch_latency; | |
| extern int32 sim_asynch_inst_latency; | |
| /* Thread local storage */ | |
| #if defined(__GNUC__) && !defined(__APPLE__) && !defined(__hpux) && !defined(__OpenBSD__) | |
| #define AIO_TLS __thread | |
| #elif defined(_MSC_VER) | |
| #define AIO_TLS __declspec(thread) | |
| #else | |
| /* Other compiler environment, then don't worry about thread local storage. */ | |
| /* It is primarily used only used in debugging messages */ | |
| #define AIO_TLS | |
| #endif | |
| #define AIO_MAIN_THREAD (pthread_equal ( pthread_self(), sim_asynch_main_threadid )) | |
| #define AIO_LOCK \ | |
| pthread_mutex_lock(&sim_asynch_lock) | |
| #define AIO_UNLOCK \ | |
| pthread_mutex_unlock(&sim_asynch_lock) | |
| #define AIO_IS_ACTIVE(uptr) (((uptr)->a_is_active ? (uptr)->a_is_active (uptr) : FALSE) || ((uptr)->a_next)) | |
| #if !defined(SIM_ASYNCH_MUX) && !defined(SIM_ASYNCH_CLOCKS) | |
| #define AIO_CANCEL(uptr) \ | |
| if ((uptr)->a_cancel) \ | |
| (uptr)->a_cancel (uptr); \ | |
| else \ | |
| (void)0 | |
| #endif /* !defined(SIM_ASYNCH_MUX) && !defined(SIM_ASYNCH_CLOCKS) */ | |
| #if defined(SIM_ASYNCH_MUX) && !defined(SIM_ASYNCH_CLOCKS) | |
| #define AIO_CANCEL(uptr) \ | |
| if ((uptr)->a_cancel) \ | |
| (uptr)->a_cancel (uptr); \ | |
| else { \ | |
| if (((uptr)->dynflags & UNIT_TM_POLL) && \ | |
| !((uptr)->next) && !((uptr)->a_next)) { \ | |
| (uptr)->a_polling_now = FALSE; \ | |
| sim_tmxr_poll_count -= (uptr)->a_poll_waiter_count; \ | |
| (uptr)->a_poll_waiter_count = 0; \ | |
| } \ | |
| } | |
| #endif /* defined(SIM_ASYNCH_MUX) && !defined(SIM_ASYNCH_CLOCKS) */ | |
| #if defined(SIM_ASYNCH_MUX) && defined(SIM_ASYNCH_CLOCKS) | |
| #define AIO_CANCEL(uptr) \ | |
| if ((uptr)->a_cancel) \ | |
| (uptr)->a_cancel (uptr); \ | |
| else { \ | |
| if (((uptr)->dynflags & UNIT_TM_POLL) && \ | |
| !((uptr)->next) && !((uptr)->a_next)) { \ | |
| (uptr)->a_polling_now = FALSE; \ | |
| sim_tmxr_poll_count -= (uptr)->a_poll_waiter_count; \ | |
| (uptr)->a_poll_waiter_count = 0; \ | |
| } \ | |
| if (AIO_IS_ACTIVE (uptr)) { \ | |
| UNIT *cptr, *nptr; \ | |
| AIO_UPDATE_QUEUE; \ | |
| pthread_mutex_lock (&sim_timer_lock); \ | |
| nptr = QUEUE_LIST_END; \ | |
| if ((uptr) == sim_wallclock_queue) { \ | |
| sim_wallclock_queue = (uptr)->next; \ | |
| (uptr)->next = NULL; \ | |
| } \ | |
| else \ | |
| for (cptr = sim_wallclock_queue; \ | |
| (cptr != QUEUE_LIST_END); \ | |
| cptr = cptr->next) \ | |
| if (cptr->next == (uptr)) { \ | |
| cptr->next = (uptr)->next; \ | |
| nptr = cptr; \ | |
| (uptr)->next = NULL; \ | |
| break; \ | |
| } \ | |
| if (nptr == QUEUE_LIST_END) { \ | |
| sim_timer_event_canceled = TRUE; \ | |
| pthread_cond_signal (&sim_timer_wake); \ | |
| } \ | |
| if ((uptr)->next == NULL) \ | |
| (uptr)->a_due_time = (uptr)->a_usec_delay = 0; \ | |
| else { \ | |
| nptr = QUEUE_LIST_END; \ | |
| if ((uptr) == sim_clock_cosched_queue) { \ | |
| sim_clock_cosched_queue = (uptr)->next; \ | |
| (uptr)->next = NULL; \ | |
| } \ | |
| else \ | |
| for (cptr = sim_clock_cosched_queue; \ | |
| (cptr != QUEUE_LIST_END); \ | |
| cptr = cptr->next) \ | |
| if (cptr->next == (uptr)) { \ | |
| cptr->next = (uptr)->next; \ | |
| nptr = cptr; \ | |
| (uptr)->next = NULL; \ | |
| break; \ | |
| } \ | |
| } \ | |
| pthread_mutex_unlock (&sim_timer_lock); \ | |
| } \ | |
| } | |
| #define AIO_RETURN_TIME(uptr) \ | |
| if (1) { \ | |
| pthread_mutex_lock (&sim_timer_lock); \ | |
| for (cptr = sim_wallclock_queue; \ | |
| cptr != QUEUE_LIST_END; \ | |
| cptr = cptr->next) \ | |
| if ((uptr) == cptr) { \ | |
| double inst_per_sec = sim_timer_inst_per_sec (); \ | |
| int32 result; \ | |
| \ | |
| result = (int32)(((uptr)->a_due_time - sim_timenow_double())*inst_per_sec);\ | |
| if (result < 0) \ | |
| result = 0; \ | |
| pthread_mutex_unlock (&sim_timer_lock); \ | |
| return result + 1; \ | |
| } \ | |
| pthread_mutex_unlock (&sim_timer_lock); \ | |
| if ((uptr)->a_next) /* On asynch queue? */ \ | |
| return (uptr)->a_event_time + 1; \ | |
| } \ | |
| else \ | |
| (void)0 | |
| #else | |
| #define AIO_RETURN_TIME(uptr) (void)0 | |
| #endif | |
| #define AIO_EVENT_BEGIN(uptr) \ | |
| do { \ | |
| int __was_poll = uptr->dynflags & UNIT_TM_POLL | |
| #define AIO_EVENT_COMPLETE(uptr, reason) \ | |
| if (__was_poll) { \ | |
| pthread_mutex_lock (&sim_tmxr_poll_lock); \ | |
| uptr->a_polling_now = FALSE; \ | |
| if (uptr->a_poll_waiter_count) { \ | |
| sim_tmxr_poll_count -= uptr->a_poll_waiter_count; \ | |
| uptr->a_poll_waiter_count = 0; \ | |
| if (0 == sim_tmxr_poll_count) \ | |
| pthread_cond_broadcast (&sim_tmxr_poll_cond); \ | |
| } \ | |
| pthread_mutex_unlock (&sim_tmxr_poll_lock); \ | |
| } \ | |
| AIO_UPDATE_QUEUE; \ | |
| } while (0) | |
| #if defined(__DECC_VER) | |
| #include <builtins> | |
| #if defined(__IA64) | |
| #define USE_AIO_INTRINSICS 1 | |
| #endif | |
| #endif | |
| #if defined(_WIN32) || defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4) || defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_8) | |
| #define USE_AIO_INTRINSICS 1 | |
| #endif | |
| /* Provide a way to test both Intrinsic and Lock based queue manipulations */ | |
| /* when both are available on a particular platform */ | |
| #if defined(DONT_USE_AIO_INTRINSICS) && defined(USE_AIO_INTRINSICS) | |
| #undef USE_AIO_INTRINSICS | |
| #endif | |
| #ifdef USE_AIO_INTRINSICS | |
| /* This approach uses intrinsics to manage access to the link list head */ | |
| /* sim_asynch_queue. This implementation is a completely lock free design */ | |
| /* which avoids the potential ABA issues. */ | |
| #define AIO_QUEUE_MODE "Lock free asynchronous event queue access" | |
| #define AIO_INIT \ | |
| if (1) { \ | |
| sim_asynch_main_threadid = pthread_self(); \ | |
| /* Empty list/list end uses the point value (void *)1. \ | |
| This allows NULL in an entry's a_next pointer to \ | |
| indicate that the entry is not currently in any list */ \ | |
| sim_asynch_queue = QUEUE_LIST_END; \ | |
| sim_wallclock_queue = QUEUE_LIST_END; \ | |
| sim_wallclock_entry = NULL; \ | |
| sim_clock_cosched_queue = QUEUE_LIST_END; \ | |
| } \ | |
| else \ | |
| (void)0 | |
| #define AIO_CLEANUP \ | |
| if (1) { \ | |
| pthread_mutex_destroy(&sim_asynch_lock); \ | |
| pthread_cond_destroy(&sim_asynch_wake); \ | |
| pthread_mutex_destroy(&sim_timer_lock); \ | |
| pthread_cond_destroy(&sim_timer_wake); \ | |
| pthread_mutex_destroy(&sim_tmxr_poll_lock); \ | |
| pthread_cond_destroy(&sim_tmxr_poll_cond); \ | |
| } \ | |
| else \ | |
| (void)0 | |
| #ifdef _WIN32 | |
| #elif defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4) || defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_8) | |
| #define InterlockedCompareExchangePointer(Destination, Exchange, Comparand) __sync_val_compare_and_swap(Destination, Comparand, Exchange) | |
| #elif defined(__DECC_VER) | |
| #define InterlockedCompareExchangePointer(Destination, Exchange, Comparand) (void *)((int32)_InterlockedCompareExchange64(Destination, Exchange, Comparand)) | |
| #else | |
| #error "Implementation of function InterlockedCompareExchangePointer() is needed to build with USE_AIO_INTRINSICS" | |
| #endif | |
| #define AIO_QUEUE_VAL InterlockedCompareExchangePointer(&sim_asynch_queue, sim_asynch_queue, NULL) | |
| #define AIO_QUEUE_SET(val, queue) InterlockedCompareExchangePointer(&sim_asynch_queue, val, queue) | |
| #define AIO_UPDATE_QUEUE \ | |
| if (AIO_QUEUE_VAL != QUEUE_LIST_END) { /* List !Empty */ \ | |
| UNIT *q, *uptr; \ | |
| int32 a_event_time; \ | |
| do \ | |
| q = AIO_QUEUE_VAL; \ | |
| while (q != AIO_QUEUE_SET(QUEUE_LIST_END, q)); \ | |
| sim_debug (SIM_DBG_AIO_QUEUE, sim_dflt_dev, "Found Asynch event for %s after %d instructions\n", sim_uname(q), q->a_event_time);\ | |
| while (q != QUEUE_LIST_END) { /* List !Empty */ \ | |
| uptr = q; \ | |
| q = q->a_next; \ | |
| uptr->a_next = NULL; /* hygiene */ \ | |
| if (uptr->a_activate_call != &sim_activate_notbefore) { \ | |
| a_event_time = uptr->a_event_time-((sim_asynch_inst_latency+1)/2); \ | |
| if (a_event_time < 0) \ | |
| a_event_time = 0; \ | |
| } \ | |
| else \ | |
| a_event_time = uptr->a_event_time; \ | |
| uptr->a_activate_call (uptr, a_event_time); \ | |
| if (uptr->a_check_completion) \ | |
| uptr->a_check_completion (uptr); \ | |
| } \ | |
| } else (void)0 | |
| #define AIO_ACTIVATE(caller, uptr, event_time) \ | |
| if (!pthread_equal ( pthread_self(), sim_asynch_main_threadid )) { \ | |
| UNIT *ouptr = (uptr); \ | |
| sim_debug (SIM_DBG_AIO_QUEUE, sim_dflt_dev, "Queueing Asynch event for %s after %d instructions\n", sim_uname(ouptr), event_time);\ | |
| if (ouptr->a_next) { \ | |
| ouptr->a_activate_call = sim_activate_abs; \ | |
| } else { \ | |
| UNIT *q, *qe; \ | |
| ouptr->a_event_time = event_time; \ | |
| uptr->a_activate_call = caller; \ | |
| uptr->a_next = QUEUE_LIST_END; /* Mark as on list */ \ | |
| do { \ | |
| do \ | |
| q = AIO_QUEUE_VAL; \ | |
| while (q != AIO_QUEUE_SET(QUEUE_LIST_END, q));/* Grab current list */\ | |
| for (qe = ouptr; qe->a_next != QUEUE_LIST_END; qe = qe->a_next); \ | |
| qe->a_next = q; /* append current list */\ | |
| do \ | |
| q = AIO_QUEUE_VAL; \ | |
| while (q != AIO_QUEUE_SET(ouptr, q)); \ | |
| ouptr = q; \ | |
| } while (ouptr != QUEUE_LIST_END); \ | |
| } \ | |
| sim_asynch_check = 0; /* try to force check */ \ | |
| if (sim_idle_wait) { \ | |
| sim_debug (TIMER_DBG_IDLE, &sim_timer_dev, "waking due to event on %s after %d instructions\n", sim_uname(ouptr), event_time);\ | |
| pthread_cond_signal (&sim_asynch_wake); \ | |
| } \ | |
| return SCPE_OK; \ | |
| } else (void)0 | |
| #else /* !USE_AIO_INTRINSICS */ | |
| /* This approach uses a pthread mutex to manage access to the link list */ | |
| /* head sim_asynch_queue. It will always work, but may be slower than the */ | |
| /* lock free approach when using USE_AIO_INTRINSICS */ | |
| #define AIO_QUEUE_MODE "Lock based asynchronous event queue access" | |
| #define AIO_INIT \ | |
| if (1) { \ | |
| pthread_mutexattr_t attr; \ | |
| \ | |
| pthread_mutexattr_init (&attr); \ | |
| pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE); \ | |
| pthread_mutex_init (&sim_asynch_lock, &attr); \ | |
| pthread_mutexattr_destroy (&attr); \ | |
| sim_asynch_main_threadid = pthread_self(); \ | |
| /* Empty list/list end uses the point value (void *)1. \ | |
| This allows NULL in an entry's a_next pointer to \ | |
| indicate that the entry is not currently in any list */ \ | |
| sim_asynch_queue = QUEUE_LIST_END; \ | |
| sim_wallclock_queue = QUEUE_LIST_END; \ | |
| sim_wallclock_entry = NULL; \ | |
| sim_clock_cosched_queue = QUEUE_LIST_END; \ | |
| } \ | |
| else \ | |
| (void)0 | |
| #define AIO_CLEANUP \ | |
| if (1) { \ | |
| pthread_mutex_destroy(&sim_asynch_lock); \ | |
| pthread_cond_destroy(&sim_asynch_wake); \ | |
| pthread_mutex_destroy(&sim_timer_lock); \ | |
| pthread_cond_destroy(&sim_timer_wake); \ | |
| pthread_mutex_destroy(&sim_tmxr_poll_lock); \ | |
| pthread_cond_destroy(&sim_tmxr_poll_cond); \ | |
| } \ | |
| else \ | |
| (void)0 | |
| #define AIO_UPDATE_QUEUE \ | |
| if (1) { \ | |
| UNIT *uptr; \ | |
| AIO_LOCK; \ | |
| while (sim_asynch_queue != QUEUE_LIST_END) { /* List !Empty */ \ | |
| int32 a_event_time; \ | |
| uptr = sim_asynch_queue; \ | |
| sim_debug (SIM_DBG_AIO_QUEUE, sim_dflt_dev, "found asynch event for %s after %d instructions\n", sim_uname(uptr), uptr->a_event_time);\ | |
| sim_asynch_queue = uptr->a_next; \ | |
| uptr->a_next = NULL; /* hygiene */ \ | |
| if (uptr->a_activate_call != &sim_activate_notbefore) { \ | |
| a_event_time = uptr->a_event_time-((sim_asynch_inst_latency+1)/2); \ | |
| if (a_event_time < 0) \ | |
| a_event_time = 0; \ | |
| } \ | |
| else \ | |
| a_event_time = uptr->a_event_time; \ | |
| AIO_UNLOCK; \ | |
| sim_debug (SIM_DBG_AIO_QUEUE, sim_dflt_dev, "calling completion check for asynch event on %s\n", sim_uname(uptr));\ | |
| uptr->a_activate_call (uptr, a_event_time); \ | |
| if (uptr->a_check_completion) \ | |
| uptr->a_check_completion (uptr); \ | |
| AIO_LOCK; \ | |
| } \ | |
| AIO_UNLOCK; \ | |
| } else (void)0 | |
| #define AIO_ACTIVATE(caller, uptr, event_time) \ | |
| if (!pthread_equal ( pthread_self(), sim_asynch_main_threadid )) { \ | |
| sim_debug (SIM_DBG_AIO_QUEUE, sim_dflt_dev, "queueing asynch event for %s after %d instructions\n", sim_uname(uptr), event_time);\ | |
| AIO_UNLOCK; \ | |
| if (uptr->a_next) { /* already queued? */ \ | |
| uptr->a_activate_call = sim_activate_abs; \ | |
| } else { \ | |
| uptr->a_next = sim_asynch_queue; \ | |
| uptr->a_event_time = event_time; \ | |
| uptr->a_activate_call = caller; \ | |
| sim_asynch_queue = uptr; \ | |
| } \ | |
| if (sim_idle_wait) \ | |
| pthread_cond_signal (&sim_asynch_wake); \ | |
| AIO_UNLOCK; \ | |
| sim_asynch_check = 0; \ | |
| return SCPE_OK; \ | |
| } else (void)0 | |
| #endif /* USE_AIO_INTRINSICS */ | |
| #define AIO_VALIDATE if (!pthread_equal ( pthread_self(), sim_asynch_main_threadid )) abort() | |
| #define AIO_CHECK_EVENT \ | |
| if (0 > --sim_asynch_check) { \ | |
| AIO_UPDATE_QUEUE; \ | |
| sim_asynch_check = sim_asynch_inst_latency; \ | |
| } else (void)0 | |
| #define AIO_SET_INTERRUPT_LATENCY(instpersec) \ | |
| if (1) { \ | |
| sim_asynch_inst_latency = (int32)((((double)(instpersec))*sim_asynch_latency)/1000000000);\ | |
| if (sim_asynch_inst_latency == 0) \ | |
| sim_asynch_inst_latency = 1; \ | |
| } else (void)0 | |
| #else /* !SIM_ASYNCH_IO */ | |
| #define AIO_QUEUE_MODE "Asynchronous I/O is not available" | |
| #define AIO_UPDATE_QUEUE | |
| #define AIO_ACTIVATE(caller, uptr, event_time) | |
| #define AIO_VALIDATE | |
| #define AIO_CHECK_EVENT | |
| #define AIO_INIT | |
| #define AIO_MAIN_THREAD TRUE | |
| #define AIO_LOCK | |
| #define AIO_UNLOCK | |
| #define AIO_CLEANUP | |
| #define AIO_RETURN_TIME(uptr) | |
| #define AIO_EVENT_BEGIN(uptr) | |
| #define AIO_EVENT_COMPLETE(uptr, reason) | |
| #define AIO_IS_ACTIVE(uptr) FALSE | |
| #define AIO_CANCEL(uptr) | |
| #define AIO_SET_INTERRUPT_LATENCY(instpersec) | |
| #define AIO_TLS | |
| #endif /* SIM_ASYNCH_IO */ | |
| #endif |