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scp.c
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/* scp.c: simulator control program
Copyright (c) 1993-2016, 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.
08-Mar-16 RMS Added shutdown flag for detach_all
20-Mar-12 MP Fixes to "SHOW <x> SHOW" commands
06-Jan-12 JDB Fixed "SHOW DEVICE" with only one enabled unit (Dave Bryan)
25-Sep-11 MP Added the ability for a simulator built with
SIM_ASYNCH_IO to change whether I/O is actually done
asynchronously by the new scp command SET ASYNCH and
SET NOASYNCH
22-Sep-11 MP Added signal catching of SIGHUP and SIGTERM to cause
simulator STOP. This allows an externally signalled
event (i.e. system shutdown, or logoff) to signal a
running simulator of these events and to allow
reasonable actions to be taken. This will facilitate
running a simulator as a 'service' on *nix platforms,
given a sufficiently flexible simulator .ini file.
20-Apr-11 MP Added expansion of %STATUS% and %TSTATUS% in do command
arguments. STATUS is the numeric value of the last
command error status and TSTATUS is the text message
relating to the last command error status
17-Apr-11 MP Changed sim_rest to defer attaching devices until after
device register contents have been restored since some
attach activities may reference register contained info.
29-Jan-11 MP Adjusted sim_debug to:
- include the simulator timestamp (sim_gtime)
as part of the prefix for each line of output
- write complete lines at a time (avoid asynch I/O issues).
05-Jan-11 MP Added Asynch I/O support
22-Jan-11 MP Added SET ON, SET NOON, ON, GOTO and RETURN command support
13-Jan-11 MP Added "SHOW SHOW" and "SHOW <dev> SHOW" commands
05-Jan-11 RMS Fixed bug in deposit stride for numeric input (John Dundas)
23-Dec-10 RMS Clarified some help messages (Mark Pizzolato)
08-Nov-10 RMS Fixed handling of DO with no arguments (Dave Bryan)
22-May-10 RMS Added *nix READLINE support (Mark Pizzolato)
08-Feb-09 RMS Fixed warnings in help printouts
29-Dec-08 RMS Fixed implementation of MTAB_NC
24-Nov-08 RMS Revised RESTORE unit logic for consistency
05-Sep-08 JDB "detach_all" ignores error status returns if shutting down
17-Aug-08 RMS Revert RUN/BOOT to standard, rather than powerup, reset
25-Jul-08 JDB DO cmd missing params now default to null string
29-Jun-08 JDB DO cmd sub_args now allows "\\" to specify literal backslash
04-Jun-08 JDB label the patch delta more clearly
31-Mar-08 RMS Fixed bug in local/global register search (Mark Pizzolato)
Fixed bug in restore of RO units (Mark Pizzolato)
06-Feb-08 RMS Added SET/SHO/NO BR with default argument
18-Jul-07 RMS Modified match_ext for VMS ext;version support
28-Apr-07 RMS Modified sim_instr invocation to call sim_rtcn_init_all
Fixed bug in get_sim_opt
Fixed bug in restoration with changed memory size
08-Mar-07 JDB Fixed breakpoint actions in DO command file processing
30-Jan-07 RMS Fixed bugs in get_ipaddr
17-Oct-06 RMS Added idle support
04-Oct-06 JDB DO cmd failure now echoes cmd unless -q
30-Aug-06 JDB detach_unit returns SCPE_UNATT if not attached
14-Jul-06 RMS Added sim_activate_abs
02-Jun-06 JDB Fixed do_cmd to exit nested files on assertion failure
Added -E switch to do_cmd to exit on any error
14-Feb-06 RMS Upgraded save file format to V3.5
18-Jan-06 RMS Added fprint_stopped_gen
Added breakpoint spaces
Fixed unaligned register access (Doug Carman)
22-Sep-05 RMS Fixed declarations (Sterling Garwood)
30-Aug-05 RMS Revised to trim trailing spaces on file names
25-Aug-05 RMS Added variable default device support
23-Aug-05 RMS Added Linux line history support
16-Aug-05 RMS Fixed C++ declaration and cast problems
01-May-05 RMS Revised syntax for SET DEBUG (Dave Bryan)
22-Mar-05 JDB Modified DO command to allow ten-level nesting
18-Mar-05 RMS Moved DETACH tests into detach_unit (Dave Bryan)
Revised interface to fprint_sym, fparse_sym
13-Mar-05 JDB ASSERT now requires a conditional operator
07-Feb-05 RMS Added ASSERT command (Dave Bryan)
02-Feb-05 RMS Fixed bug in global register search
26-Dec-04 RMS Qualified SAVE examine, RESTORE deposit with SIM_SW_REST
10-Nov-04 JDB Fixed logging of errors from cmds in "do" file
05-Nov-04 RMS Moved SET/SHOW DEBUG under CONSOLE hierarchy
Renamed unit OFFLINE/ONLINE to DISABLED/ENABLED (Dave Bryan)
Revised to flush output files after simulation stop (Dave Bryan)
15-Oct-04 RMS Fixed HELP to suppress duplicate descriptions
27-Sep-04 RMS Fixed comma-separation options in set (David Bryan)
09-Sep-04 RMS Added -p option for RESET
13-Aug-04 RMS Qualified RESTORE detach with SIM_SW_REST
17-Jul-04 JDB DO cmd file open failure retries with ".sim" appended
17-Jul-04 RMS Added ECHO command (Dave Bryan)
12-Jul-04 RMS Fixed problem ATTACHing to read only files
(John Dundas)
28-May-04 RMS Added SET/SHOW CONSOLE
14-Feb-04 RMS Updated SAVE/RESTORE (V3.2)
RMS Added debug print routines (Dave Hittner)
RMS Added sim_vm_parse_addr and sim_vm_fprint_addr
RMS Added REG_VMAD support
RMS Split out libraries
RMS Moved logging function to SCP
RMS Exposed step counter interface(s)
RMS Fixed double logging of SHOW BREAK (Mark Pizzolato)
RMS Fixed implementation of REG_VMIO
RMS Added SET/SHOW DEBUG, SET/SHOW <device> DEBUG,
SHOW <device> MODIFIERS, SHOW <device> RADIX
RMS Changed sim_fsize to take uptr argument
29-Dec-03 RMS Added Telnet console output stall support
01-Nov-03 RMS Cleaned up implicit detach on attach/restore
Fixed bug in command line read while logging (Mark Pizzolato)
01-Sep-03 RMS Fixed end-of-file problem in dep, idep
Fixed error on trailing spaces in dep, idep
15-Jul-03 RMS Removed unnecessary test in reset_all
15-Jun-03 RMS Added register flag REG_VMIO
25-Apr-03 RMS Added extended address support (V3.0)
Fixed bug in SAVE (Peter Schorn)
Added u5, u6 fields
Added logical name support
03-Mar-03 RMS Added sim_fsize
27-Feb-03 RMS Fixed bug in multiword deposits to files
08-Feb-03 RMS Changed sim_os_sleep to void, match_ext to char*
Added multiple actions, .ini file support
Added multiple switch evaluations per line
07-Feb-03 RMS Added VMS support for ! (Mark Pizzolato)
01-Feb-03 RMS Added breakpoint table extension, actions
14-Jan-03 RMS Added missing function prototypes
10-Jan-03 RMS Added attach/restore flag, dynamic memory size support,
case sensitive SET options
22-Dec-02 RMS Added ! (OS command) feature (Mark Pizzolato)
17-Dec-02 RMS Added get_ipaddr
02-Dec-02 RMS Added EValuate command
16-Nov-02 RMS Fixed bug in register name match algorithm
13-Oct-02 RMS Fixed Borland compiler warnings (Hans Pufal)
05-Oct-02 RMS Fixed bugs in set_logon, ssh_break (David Hittner)
Added support for fixed buffer devices
Added support for Telnet console, removed VT support
Added help <command>
Added VMS file optimizations (Robert Alan Byer)
Added quiet mode, DO with parameters, GUI interface,
extensible commands (Brian Knittel)
Added device enable/disable commands
14-Jul-02 RMS Fixed exit bug in do, added -v switch (Brian Knittel)
17-May-02 RMS Fixed bug in fxread/fxwrite error usage (found by
Norm Lastovic)
02-May-02 RMS Added VT emulation interface, changed {NO}LOG to SET {NO}LOG
22-Apr-02 RMS Fixed laptop sleep problem in clock calibration, added
magtape record length error (Jonathan Engdahl)
26-Feb-02 RMS Fixed initialization bugs in do_cmd, get_aval
(Brian Knittel)
10-Feb-02 RMS Fixed problem in clock calibration
06-Jan-02 RMS Moved device enable/disable to simulators
30-Dec-01 RMS Generalized timer packaged, added circular arrays
19-Dec-01 RMS Fixed DO command bug (John Dundas)
07-Dec-01 RMS Implemented breakpoint package
05-Dec-01 RMS Fixed bug in universal register logic
03-Dec-01 RMS Added read-only units, extended SET/SHOW, universal registers
24-Nov-01 RMS Added unit-based registers
16-Nov-01 RMS Added DO command
28-Oct-01 RMS Added relative range addressing
08-Oct-01 RMS Added SHOW VERSION
30-Sep-01 RMS Relaxed attach test in BOOT
27-Sep-01 RMS Added queue count routine, fixed typo in ex/mod
17-Sep-01 RMS Removed multiple console support
07-Sep-01 RMS Removed conditional externs on function prototypes
Added special modifier print
31-Aug-01 RMS Changed int64 to t_int64 for Windoze (V2.7)
18-Jul-01 RMS Minor changes for Macintosh port
12-Jun-01 RMS Fixed bug in big-endian I/O (Dave Conroy)
27-May-01 RMS Added multiple console support
16-May-01 RMS Added logging
15-May-01 RMS Added features from Tim Litt
12-May-01 RMS Fixed missing return in disable_cmd
25-Mar-01 RMS Added ENABLE/DISABLE
14-Mar-01 RMS Revised LOAD/DUMP interface (again)
05-Mar-01 RMS Added clock calibration support
05-Feb-01 RMS Fixed bug, DETACH buffered unit with hwmark = 0
04-Feb-01 RMS Fixed bug, RESTORE not using device's attach routine
21-Jan-01 RMS Added relative time
22-Dec-00 RMS Fixed find_device for devices ending in numbers
08-Dec-00 RMS V2.5a changes
30-Oct-00 RMS Added output file option to examine
11-Jul-99 RMS V2.5 changes
13-Apr-99 RMS Fixed handling of 32b addresses
04-Oct-98 RMS V2.4 changes
20-Aug-98 RMS Added radix commands
05-Jun-98 RMS Fixed bug in ^D handling for UNIX
10-Apr-98 RMS Added switches to all commands
26-Oct-97 RMS Added search capability
25-Jan-97 RMS Revised data types
23-Jan-97 RMS Added bi-endian I/O
06-Sep-96 RMS Fixed bug in variable length IEXAMINE
16-Jun-96 RMS Changed interface to parse/print_sym
06-Apr-96 RMS Added error checking in reset all
07-Jan-96 RMS Added register buffers in save/restore
11-Dec-95 RMS Fixed ordering bug in save/restore
22-May-95 RMS Added symbolic input
13-Apr-95 RMS Added symbolic printouts
*/
/* Macros and data structures */
#define NOT_MUX_USING_CODE /* sim_tmxr library provider or agnostic */
#define IN_SCP_C 1 /* Include from scp.c */
#include "sim_defs.h"
#include "sim_rev.h"
#include "sim_disk.h"
#include "sim_tape.h"
#include "sim_ether.h"
#include "sim_serial.h"
#include "sim_video.h"
#include "sim_sock.h"
#include "sim_frontpanel.h"
#include <signal.h>
#include <ctype.h>
#include <time.h>
#include <math.h>
#if defined(_WIN32)
#include <direct.h>
#include <io.h>
#include <fcntl.h>
#else
#include <unistd.h>
#endif
#include <sys/stat.h>
#include <setjmp.h>
#if defined(HAVE_DLOPEN) /* Dynamic Readline support */
#include <dlfcn.h>
#endif
#ifndef MAX
#define MAX(a,b) (((a) >= (b)) ? (a) : (b))
#endif
/* search logical and boolean ops */
#define SCH_OR 0 /* search logicals */
#define SCH_AND 1
#define SCH_XOR 2
#define SCH_E 0 /* search booleans */
#define SCH_N 1
#define SCH_G 2
#define SCH_L 3
#define SCH_EE 4
#define SCH_NE 5
#define SCH_GE 6
#define SCH_LE 7
#define MAX_DO_NEST_LVL 20 /* DO cmd nesting level */
#define SRBSIZ 1024 /* save/restore buffer */
#define SIM_BRK_INILNT 4096 /* bpt tbl length */
#define SIM_BRK_ALLTYP 0xFFFFFFFB
#define UPDATE_SIM_TIME \
if (1) { \
int32 _x; \
AIO_LOCK; \
if (sim_clock_queue == QUEUE_LIST_END) \
_x = noqueue_time; \
else \
_x = sim_clock_queue->time; \
sim_time = sim_time + (_x - sim_interval); \
sim_rtime = sim_rtime + ((uint32) (_x - sim_interval)); \
if (sim_clock_queue == QUEUE_LIST_END) \
noqueue_time = sim_interval; \
else \
sim_clock_queue->time = sim_interval; \
AIO_UNLOCK; \
} \
else \
(void)0 \
#define SZ_D(dp) (size_map[((dp)->dwidth + CHAR_BIT - 1) / CHAR_BIT])
#define SZ_R(rp) \
(size_map[((rp)->width + (rp)->offset + CHAR_BIT - 1) / CHAR_BIT])
#if defined (USE_INT64)
#define SZ_LOAD(sz,v,mb,j) \
if (sz == sizeof (uint8)) v = *(((uint8 *) mb) + ((uint32) j)); \
else if (sz == sizeof (uint16)) v = *(((uint16 *) mb) + ((uint32) j)); \
else if (sz == sizeof (uint32)) v = *(((uint32 *) mb) + ((uint32) j)); \
else v = *(((t_uint64 *) mb) + ((uint32) j));
#define SZ_STORE(sz,v,mb,j) \
if (sz == sizeof (uint8)) *(((uint8 *) mb) + j) = (uint8) v; \
else if (sz == sizeof (uint16)) *(((uint16 *) mb) + ((uint32) j)) = (uint16) v; \
else if (sz == sizeof (uint32)) *(((uint32 *) mb) + ((uint32) j)) = (uint32) v; \
else *(((t_uint64 *) mb) + ((uint32) j)) = v;
#else
#define SZ_LOAD(sz,v,mb,j) \
if (sz == sizeof (uint8)) v = *(((uint8 *) mb) + ((uint32) j)); \
else if (sz == sizeof (uint16)) v = *(((uint16 *) mb) + ((uint32) j)); \
else v = *(((uint32 *) mb) + ((uint32) j));
#define SZ_STORE(sz,v,mb,j) \
if (sz == sizeof (uint8)) *(((uint8 *) mb) + ((uint32) j)) = (uint8) v; \
else if (sz == sizeof (uint16)) *(((uint16 *) mb) + ((uint32) j)) = (uint16) v; \
else *(((uint32 *) mb) + ((uint32) j)) = v;
#endif
#define GET_SWITCHES(cp) \
if ((cp = get_sim_sw (cp)) == NULL) return SCPE_INVSW
#define GET_RADIX(val,dft) \
if (sim_switches & SWMASK ('O')) val = 8; \
else if (sim_switches & SWMASK ('D')) val = 10; \
else if (sim_switches & SWMASK ('H')) val = 16; \
else if ((sim_switch_number >= 2) && (sim_switch_number <= 36)) val = sim_switch_number; \
else val = dft;
/* Asynch I/O support */
#if defined (SIM_ASYNCH_IO)
pthread_mutex_t sim_asynch_lock = PTHREAD_MUTEX_INITIALIZER;
pthread_cond_t sim_asynch_wake = PTHREAD_COND_INITIALIZER;
pthread_mutex_t sim_timer_lock = PTHREAD_MUTEX_INITIALIZER;
pthread_cond_t sim_timer_wake = PTHREAD_COND_INITIALIZER;
pthread_mutex_t sim_tmxr_poll_lock = PTHREAD_MUTEX_INITIALIZER;
pthread_cond_t sim_tmxr_poll_cond = PTHREAD_COND_INITIALIZER;
int32 sim_tmxr_poll_count;
pthread_t sim_asynch_main_threadid;
UNIT * volatile sim_asynch_queue;
t_bool sim_asynch_enabled = TRUE;
int32 sim_asynch_check;
int32 sim_asynch_latency = 4000; /* 4 usec interrupt latency */
int32 sim_asynch_inst_latency = 20; /* assume 5 mip simulator */
int sim_aio_update_queue (void)
{
int migrated = 0;
AIO_ILOCK;
if (AIO_QUEUE_VAL != QUEUE_LIST_END) { /* List !Empty */
UNIT *q, *uptr;
int32 a_event_time;
do { /* Grab current queue */
q = AIO_QUEUE_VAL;
} while (q != AIO_QUEUE_SET(QUEUE_LIST_END, q));
while (q != QUEUE_LIST_END) { /* List !Empty */
sim_debug (SIM_DBG_AIO_QUEUE, sim_dflt_dev, "Migrating Asynch event for %s after %d instructions\n", sim_uname(q), q->a_event_time);
++migrated;
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;
AIO_IUNLOCK;
uptr->a_activate_call (uptr, a_event_time);
if (uptr->a_check_completion) {
sim_debug (SIM_DBG_AIO_QUEUE, sim_dflt_dev, "Calling Completion Check for asynch event on %s\n", sim_uname(uptr));
uptr->a_check_completion (uptr);
}
AIO_ILOCK;
}
}
AIO_IUNLOCK;
return migrated;
}
void sim_aio_activate (ACTIVATE_API caller, UNIT *uptr, int32 event_time)
{
AIO_ILOCK;
sim_debug (SIM_DBG_AIO_QUEUE, sim_dflt_dev, "Queueing Asynch event for %s after %d instructions\n", sim_uname(uptr), event_time);
if (uptr->a_next) {
uptr->a_activate_call = sim_activate_abs;
}
else {
UNIT *q;
uptr->a_event_time = event_time;
uptr->a_activate_call = caller;
do {
q = AIO_QUEUE_VAL;
uptr->a_next = q; /* Mark as on list */
} while (q != AIO_QUEUE_SET(uptr, q));
}
AIO_IUNLOCK;
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(uptr), event_time);
pthread_cond_signal (&sim_asynch_wake);
}
}
#else
t_bool sim_asynch_enabled = FALSE;
#endif
/* The per-simulator init routine is a weak global that defaults to NULL
The other per-simulator pointers can be overrriden by the init routine */
WEAK void (*sim_vm_init) (void);
char* (*sim_vm_read) (char *ptr, int32 size, FILE *stream) = NULL;
void (*sim_vm_post) (t_bool from_scp) = NULL;
CTAB *sim_vm_cmd = NULL;
void (*sim_vm_sprint_addr) (char *buf, DEVICE *dptr, t_addr addr) = NULL;
void (*sim_vm_fprint_addr) (FILE *st, DEVICE *dptr, t_addr addr) = NULL;
t_addr (*sim_vm_parse_addr) (DEVICE *dptr, CONST char *cptr, CONST char **tptr) = NULL;
t_value (*sim_vm_pc_value) (void) = NULL;
t_bool (*sim_vm_is_subroutine_call) (t_addr **ret_addrs) = NULL;
t_bool (*sim_vm_fprint_stopped) (FILE *st, t_stat reason) = NULL;
/* Prototypes */
/* Set and show command processors */
t_stat set_dev_radix (DEVICE *dptr, UNIT *uptr, int32 flag, CONST char *cptr);
t_stat set_dev_enbdis (DEVICE *dptr, UNIT *uptr, int32 flag, CONST char *cptr);
t_stat set_dev_debug (DEVICE *dptr, UNIT *uptr, int32 flag, CONST char *cptr);
t_stat set_unit_enbdis (DEVICE *dptr, UNIT *uptr, int32 flag, CONST char *cptr);
t_stat ssh_break (FILE *st, const char *cptr, int32 flg);
t_stat show_cmd_fi (FILE *ofile, int32 flag, CONST char *cptr);
t_stat show_config (FILE *st, DEVICE *dptr, UNIT *uptr, int32 flag, CONST char *cptr);
t_stat show_queue (FILE *st, DEVICE *dptr, UNIT *uptr, int32 flag, CONST char *cptr);
t_stat show_time (FILE *st, DEVICE *dptr, UNIT *uptr, int32 flag, CONST char *cptr);
t_stat show_mod_names (FILE *st, DEVICE *dptr, UNIT *uptr, int32 flag, CONST char *cptr);
t_stat show_show_commands (FILE *st, DEVICE *dptr, UNIT *uptr, int32 flag, CONST char *cptr);
t_stat show_log_names (FILE *st, DEVICE *dptr, UNIT *uptr, int32 flag, CONST char *cptr);
t_stat show_dev_radix (FILE *st, DEVICE *dptr, UNIT *uptr, int32 flag, CONST char *cptr);
t_stat show_dev_debug (FILE *st, DEVICE *dptr, UNIT *uptr, int32 flag, CONST char *cptr);
t_stat show_dev_logicals (FILE *st, DEVICE *dptr, UNIT *uptr, int32 flag, CONST char *cptr);
t_stat show_dev_modifiers (FILE *st, DEVICE *dptr, UNIT *uptr, int32 flag, CONST char *cptr);
t_stat show_dev_show_commands (FILE *st, DEVICE *dptr, UNIT *uptr, int32 flag, CONST char *cptr);
t_stat show_version (FILE *st, DEVICE *dptr, UNIT *uptr, int32 flag, CONST char *cptr);
t_stat show_default (FILE *st, DEVICE *dptr, UNIT *uptr, int32 flag, CONST char *cptr);
t_stat show_break (FILE *st, DEVICE *dptr, UNIT *uptr, int32 flag, CONST char *cptr);
t_stat show_on (FILE *st, DEVICE *dptr, UNIT *uptr, int32 flag, CONST char *cptr);
t_stat sim_show_send (FILE *st, DEVICE *dptr, UNIT *uptr, int32 flag, CONST char *cptr);
t_stat sim_show_expect (FILE *st, DEVICE *dptr, UNIT *uptr, int32 flag, CONST char *cptr);
t_stat show_device (FILE *st, DEVICE *dptr, int32 flag);
t_stat show_unit (FILE *st, DEVICE *dptr, UNIT *uptr, int32 flag);
t_stat show_all_mods (FILE *st, DEVICE *dptr, UNIT *uptr, int32 flg, int32 *toks);
t_stat show_one_mod (FILE *st, DEVICE *dptr, UNIT *uptr, MTAB *mptr, CONST char *cptr, int32 flag);
t_stat sim_save (FILE *sfile);
t_stat sim_rest (FILE *rfile);
/* Breakpoint package */
t_stat sim_brk_init (void);
t_stat sim_brk_set (t_addr loc, int32 sw, int32 ncnt, CONST char *act);
t_stat sim_brk_clr (t_addr loc, int32 sw);
t_stat sim_brk_clrall (int32 sw);
t_stat sim_brk_show (FILE *st, t_addr loc, int32 sw);
t_stat sim_brk_showall (FILE *st, int32 sw);
CONST char *sim_brk_getact (char *buf, int32 size);
BRKTAB *sim_brk_new (t_addr loc, uint32 btyp);
char *sim_brk_clract (void);
FILE *stdnul;
/* Command support routines */
SCHTAB *get_rsearch (CONST char *cptr, int32 radix, SCHTAB *schptr);
SCHTAB *get_asearch (CONST char *cptr, int32 radix, SCHTAB *schptr);
int32 test_search (t_value *val, SCHTAB *schptr);
static const char *get_glyph_gen (const char *iptr, char *optr, char mchar, t_bool uc, t_bool quote, char escape_char);
typedef enum {
SW_ERROR, /* Parse Error */
SW_BITMASK, /* Bitmask Value or Not a switch */
SW_NUMBER /* Numeric Value */
} SWITCH_PARSE;
SWITCH_PARSE get_switches (const char *cptr, int32 *sw_val, int32 *sw_number);
t_stat get_aval (t_addr addr, DEVICE *dptr, UNIT *uptr);
t_value get_rval (REG *rptr, uint32 idx);
void put_rval (REG *rptr, uint32 idx, t_value val);
void fprint_help (FILE *st);
void fprint_stopped (FILE *st, t_stat r);
void fprint_capac (FILE *st, DEVICE *dptr, UNIT *uptr);
void fprint_sep (FILE *st, int32 *tokens);
char *read_line (char *ptr, int32 size, FILE *stream);
char *read_line_p (const char *prompt, char *ptr, int32 size, FILE *stream);
REG *find_reg_glob (CONST char *ptr, CONST char **optr, DEVICE **gdptr);
REG *find_reg_glob_reason (CONST char *cptr, CONST char **optr, DEVICE **gdptr, t_stat *stat);
char *sim_trim_endspc (char *cptr);
/* Forward references */
t_stat scp_attach_unit (DEVICE *dptr, UNIT *uptr, const char *cptr);
t_stat scp_detach_unit (DEVICE *dptr, UNIT *uptr);
t_bool qdisable (DEVICE *dptr);
t_stat attach_err (UNIT *uptr, t_stat stat);
t_stat detach_all (int32 start_device, t_bool shutdown);
t_stat assign_device (DEVICE *dptr, const char *cptr);
t_stat deassign_device (DEVICE *dptr);
t_stat ssh_break_one (FILE *st, int32 flg, t_addr lo, int32 cnt, CONST char *aptr);
t_stat exdep_reg_loop (FILE *ofile, SCHTAB *schptr, int32 flag, CONST char *cptr,
REG *lowr, REG *highr, uint32 lows, uint32 highs);
t_stat ex_reg (FILE *ofile, t_value val, int32 flag, REG *rptr, uint32 idx);
t_stat dep_reg (int32 flag, CONST char *cptr, REG *rptr, uint32 idx);
t_stat exdep_addr_loop (FILE *ofile, SCHTAB *schptr, int32 flag, const char *cptr,
t_addr low, t_addr high, DEVICE *dptr, UNIT *uptr);
t_stat ex_addr (FILE *ofile, int32 flag, t_addr addr, DEVICE *dptr, UNIT *uptr);
t_stat dep_addr (int32 flag, const char *cptr, t_addr addr, DEVICE *dptr,
UNIT *uptr, int32 dfltinc);
void fprint_fields (FILE *stream, t_value before, t_value after, BITFIELD* bitdefs);
t_stat step_svc (UNIT *ptr);
t_stat expect_svc (UNIT *ptr);
t_stat shift_args (char *do_arg[], size_t arg_count);
t_stat set_on (int32 flag, CONST char *cptr);
t_stat set_verify (int32 flag, CONST char *cptr);
t_stat set_message (int32 flag, CONST char *cptr);
t_stat set_quiet (int32 flag, CONST char *cptr);
t_stat set_asynch (int32 flag, CONST char *cptr);
t_stat sim_show_asynch (FILE *st, DEVICE *dptr, UNIT *uptr, int32 flag, CONST char *cptr);
t_stat do_cmd_label (int32 flag, CONST char *cptr, CONST char *label);
void int_handler (int signal);
t_stat set_prompt (int32 flag, CONST char *cptr);
t_stat sim_set_asynch (int32 flag, CONST char *cptr);
t_stat sim_set_environment (int32 flag, CONST char *cptr);
static const char *get_dbg_verb (uint32 dbits, DEVICE* dptr);
/* Global data */
DEVICE *sim_dflt_dev = NULL;
UNIT *sim_clock_queue = QUEUE_LIST_END;
int32 sim_interval = 0;
int32 sim_switches = 0;
int32 sim_switch_number = 0;
FILE *sim_ofile = NULL;
TMLN *sim_oline = NULL;
MEMFILE *sim_mfile = NULL;
SCHTAB *sim_schrptr = FALSE;
SCHTAB *sim_schaptr = FALSE;
DEVICE *sim_dfdev = NULL;
UNIT *sim_dfunit = NULL;
DEVICE **sim_internal_devices = NULL;
uint32 sim_internal_device_count = 0;
int32 sim_opt_out = 0;
volatile t_bool sim_is_running = FALSE;
t_bool sim_processing_event = FALSE;
uint32 sim_brk_summ = 0;
uint32 sim_brk_types = 0;
BRKTYPTAB *sim_brk_type_desc = NULL; /* type descriptions */
uint32 sim_brk_dflt = 0;
uint32 sim_brk_match_type;
t_addr sim_brk_match_addr;
char *sim_brk_act[MAX_DO_NEST_LVL];
char *sim_brk_act_buf[MAX_DO_NEST_LVL];
BRKTAB **sim_brk_tab = NULL;
int32 sim_brk_ent = 0;
int32 sim_brk_lnt = 0;
int32 sim_brk_ins = 0;
int32 sim_quiet = 0;
int32 sim_step = 0;
char *sim_sub_instr = NULL;
char *sim_sub_instr_buf = NULL;
size_t sim_sub_instr_size = 0;
size_t *sim_sub_instr_off = NULL;
static double sim_time;
static uint32 sim_rtime;
static int32 noqueue_time;
volatile t_bool stop_cpu = FALSE;
static unsigned int sim_stop_sleep_ms = 250;
static char **sim_argv;
t_value *sim_eval = NULL;
static t_value sim_last_val;
static t_addr sim_last_addr;
FILE *sim_log = NULL; /* log file */
FILEREF *sim_log_ref = NULL; /* log file file reference */
FILE *sim_deb = NULL; /* debug file */
FILEREF *sim_deb_ref = NULL; /* debug file file reference */
int32 sim_deb_switches = 0; /* debug switches */
struct timespec sim_deb_basetime; /* debug timestamp relative base time */
char *sim_prompt = NULL; /* prompt string */
static FILE *sim_gotofile; /* the currently open do file */
static int32 sim_goto_line[MAX_DO_NEST_LVL+1]; /* the current line number in the currently open do file */
static int32 sim_do_echo = 0; /* the echo status of the currently open do file */
static int32 sim_show_message = 1; /* the message display status of the currently open do file */
static int32 sim_on_inherit = 0; /* the inherit status of on state and conditions when executing do files */
static int32 sim_do_depth = 0;
static t_bool sim_cmd_echoed = FALSE; /* Command was emitted already prior to message output */
static int32 sim_on_check[MAX_DO_NEST_LVL+1];
static char *sim_on_actions[MAX_DO_NEST_LVL+1][SCPE_MAX_ERR+2];
#define ON_SIGINT_ACTION (SCPE_MAX_ERR+1)
static char sim_do_filename[MAX_DO_NEST_LVL+1][CBUFSIZE];
static const char *sim_do_ocptr[MAX_DO_NEST_LVL+1];
static const char *sim_do_label[MAX_DO_NEST_LVL+1];
t_stat sim_last_cmd_stat; /* Command Status */
static SCHTAB sim_stabr; /* Register search specifier */
static SCHTAB sim_staba; /* Memory search specifier */
static DEBTAB sim_dflt_debug[] = {
{"EVENT", SIM_DBG_EVENT, "Event Dispatching"},
{"ACTIVATE", SIM_DBG_ACTIVATE, "Event Scheduling"},
{"AIO_QUEUE", SIM_DBG_AIO_QUEUE, "Asynchronous Event Queueing"},
{0}
};
static UNIT sim_step_unit = { UDATA (&step_svc, 0, 0) };
static UNIT sim_expect_unit = { UDATA (&expect_svc, 0, 0) };
#if defined USE_INT64
static const char *sim_si64 = "64b data";
#else
static const char *sim_si64 = "32b data";
#endif
#if defined USE_ADDR64
static const char *sim_sa64 = "64b addresses";
#else
static const char *sim_sa64 = "32b addresses";
#endif
const char *sim_savename = sim_name; /* Simulator Name used in SAVE/RESTORE images */
/* Tables and strings */
const char save_vercur[] = "V4.0";
const char save_ver40[] = "V4.0";
const char save_ver35[] = "V3.5";
const char save_ver32[] = "V3.2";
const char save_ver30[] = "V3.0";
const struct scp_error {
const char *code;
const char *message;
} scp_errors[1+SCPE_MAX_ERR-SCPE_BASE] =
{{"NXM", "Address space exceeded"},
{"UNATT", "Unit not attached"},
{"IOERR", "I/O error"},
{"CSUM", "Checksum error"},
{"FMT", "Format error"},
{"NOATT", "Unit not attachable"},
{"OPENERR", "File open error"},
{"MEM", "Memory exhausted"},
{"ARG", "Invalid argument"},
{"STEP", "Step expired"},
{"UNK", "Unknown command"},
{"RO", "Read only argument"},
{"INCOMP", "Command not completed"},
{"STOP", "Simulation stopped"},
{"EXIT", "Goodbye"},
{"TTIERR", "Console input I/O error"},
{"TTOERR", "Console output I/O error"},
{"EOF", "End of file"},
{"REL", "Relocation error"},
{"NOPARAM", "No settable parameters"},
{"ALATT", "Unit already attached"},
{"TIMER", "Hardware timer error"},
{"SIGERR", "Signal handler setup error"},
{"TTYERR", "Console terminal setup error"},
{"SUB", "Subscript out of range"},
{"NOFNC", "Command not allowed"},
{"UDIS", "Unit disabled"},
{"NORO", "Read only operation not allowed"},
{"INVSW", "Invalid switch"},
{"MISVAL", "Missing value"},
{"2FARG", "Too few arguments"},
{"2MARG", "Too many arguments"},
{"NXDEV", "Non-existent device"},
{"NXUN", "Non-existent unit"},
{"NXREG", "Non-existent register"},
{"NXPAR", "Non-existent parameter"},
{"NEST", "Nested DO command limit exceeded"},
{"IERR", "Internal error"},
{"MTRLNT", "Invalid magtape record length"},
{"LOST", "Console Telnet connection lost"},
{"TTMO", "Console Telnet connection timed out"},
{"STALL", "Console Telnet output stall"},
{"AFAIL", "Assertion failed"},
{"INVREM", "Invalid remote console command"},
{"NOTATT", "Not attached"},
{"EXPECT", "Expect matched"},
{"AMBREG", "Ambiguous register name"},
{"REMOTE", "remote console command"},
};
const size_t size_map[] = { sizeof (int8),
sizeof (int8), sizeof (int16), sizeof (int32), sizeof (int32)
#if defined (USE_INT64)
, sizeof (t_int64), sizeof (t_int64), sizeof (t_int64), sizeof (t_int64)
#endif
};
const t_value width_mask[] = { 0,
0x1, 0x3, 0x7, 0xF,
0x1F, 0x3F, 0x7F, 0xFF,
0x1FF, 0x3FF, 0x7FF, 0xFFF,
0x1FFF, 0x3FFF, 0x7FFF, 0xFFFF,
0x1FFFF, 0x3FFFF, 0x7FFFF, 0xFFFFF,
0x1FFFFF, 0x3FFFFF, 0x7FFFFF, 0xFFFFFF,
0x1FFFFFF, 0x3FFFFFF, 0x7FFFFFF, 0xFFFFFFF,
0x1FFFFFFF, 0x3FFFFFFF, 0x7FFFFFFF, 0xFFFFFFFF
#if defined (USE_INT64)
, 0x1FFFFFFFF, 0x3FFFFFFFF, 0x7FFFFFFFF, 0xFFFFFFFFF,
0x1FFFFFFFFF, 0x3FFFFFFFFF, 0x7FFFFFFFFF, 0xFFFFFFFFFF,
0x1FFFFFFFFFF, 0x3FFFFFFFFFF, 0x7FFFFFFFFFF, 0xFFFFFFFFFFF,
0x1FFFFFFFFFFF, 0x3FFFFFFFFFFF, 0x7FFFFFFFFFFF, 0xFFFFFFFFFFFF,
0x1FFFFFFFFFFFF, 0x3FFFFFFFFFFFF, 0x7FFFFFFFFFFFF, 0xFFFFFFFFFFFFF,
0x1FFFFFFFFFFFFF, 0x3FFFFFFFFFFFFF, 0x7FFFFFFFFFFFFF, 0xFFFFFFFFFFFFFF,
0x1FFFFFFFFFFFFFF, 0x3FFFFFFFFFFFFFF,
0x7FFFFFFFFFFFFFF, 0xFFFFFFFFFFFFFFF,
0x1FFFFFFFFFFFFFFF, 0x3FFFFFFFFFFFFFFF,
0x7FFFFFFFFFFFFFFF, 0xFFFFFFFFFFFFFFFF
#endif
};
static const char simh_help[] =
/***************** 80 character line width template *************************/
"1Commands\n"
#define HLP_RESET "*Commands Resetting Devices"
/***************** 80 character line width template *************************/
"2Resetting Devices\n"
" The RESET command (abbreviation RE) resets a device or the entire simulator\n"
" to a predefined condition. If switch -p is specified, the device is reset\n"
" to its power-up state:\n\n"
"++RESET reset all devices\n"
"++RESET -p powerup all devices\n"
"++RESET ALL reset all devices\n"
"++RESET <device> reset specified device\n\n"
" Typically, RESET stops any in-progress I/O operation, clears any interrupt\n"
" request, and returns the device to a quiescent state. It does not clear\n"
" main memory or affect I/O connections.\n"
#define HLP_EXAMINE "*Commands Examining_and_Changing_State"
#define HLP_IEXAMINE "*Commands Examining_and_Changing_State"
#define HLP_DEPOSIT "*Commands Examining_and_Changing_State"
#define HLP_IDEPOSIT "*Commands Examining_and_Changing_State"
/***************** 80 character line width template *************************/
"2Examining and Changing State\n"
" There are four commands to examine and change state:\n\n"
"++EXAMINE (abbreviated E) examines state\n"
"++DEPOSIT (abbreviated D) changes state\n"
"++IEXAMINE (interactive examine, abbreviated IE) examines state and allows\n"
"++++the user to interactively change it\n"
"++IDEPOSIT (interactive deposit, abbreviated ID) allows the user to\n"
"++++interactively change state\n\n"
" All four commands take the form\n\n"
"++command {modifiers} <object list>\n\n"
" Deposit must also include a deposit value at the end of the command.\n\n"
" There are four kinds of modifiers: switches, device/unit name, search\n"
" specifier, and for EXAMINE, output file. Switches have been described\n"
" previously. A device/unit name identifies the device and unit whose\n"
" address space is to be examined or modified. If no device is specified,\n"
" the CPU (main memory)is selected; if a device but no unit is specified,\n"
" unit 0 of the device is selected.\n\n"
" The search specifier provides criteria for testing addresses or registers\n"
" to see if they should be processed. A specifier consists of a logical\n"
" operator, a relational operator, or both, optionally separated by spaces.\n\n"
"++{<logical op> <value>} <relational op> <value>\n\n"
/***************** 80 character line width template *************************/
" where the logical operator is & (and), | (or), or ^ (exclusive or), and the\n"
" relational operator is = or == (equal), ! or != (not equal), >= (greater\n"
" than or equal), > (greater than), <= (less than or equal), or < (less than).\n"
" If a logical operator is specified without a relational operator, it is\n"
" ignored. If a relational operator is specified without a logical operator,\n"
" no logical operation is performed. All comparisons are unsigned.\n\n"
" The output file modifier redirects command output to a file instead of the\n"
" console. An output file modifier consists of @ followed by a valid file\n"
" name.\n\n"
" Modifiers may be specified in any order. If multiple modifiers of the\n"
" same type are specified, later modifiers override earlier modifiers. Note\n"
" that if the device/unit name comes after the search specifier, the search\n"
" values will interpreted in the radix of the CPU, rather than of the\n"
" device/unit.\n\n"
" The \"object list\" consists of one or more of the following, separated by\n"
" commas:\n\n"
/***************** 80 character line width template *************************/
"++register the specified register\n"
"++register[sub1-sub2] the specified register array locations,\n"
"++ starting at location sub1 up to and\n"
"++ including location sub2\n"
"++register[sub1/length] the specified register array locations,\n"
"++ starting at location sub1 up to but\n"
"++ not including sub1+length\n"
"++register[ALL] all locations in the specified register\n"
"++ array\n"
"++register1-register2 all the registers starting at register1\n"
"++ up to and including register2\n"
"++address the specified location\n"
"++address1-address2 all locations starting at address1 up to\n"
"++ and including address2\n"
"++address/length all location starting at address up to\n"
"++ but not including address+length\n"
"++STATE all registers in the device\n"
"++ALL all locations in the unit\n"
"++$ the last value displayed by an EXAMINE command\n"
" interpreted as an address\n"
"3Switches\n"
" Switches can be used to control the format of display information:\n\n"
/***************** 80 character line width template *************************/
"++-a display as ASCII\n"
"++-c display as character string\n"
"++-m display as instruction mnemonics\n"
"++-o or -8 display as octal\n"
"++-d or -10 display as decimal\n"
"++-h or -16 display as hexadecimal\n"
"++-2 display as binary\n\n"
" The simulators typically accept symbolic input (see documentation with each\n"
" simulator).\n\n"
"3Examples\n"
" Examples:\n\n"
"++ex 1000-1100 examine 1000 to 1100\n"
"++de PC 1040 set PC to 1040\n"
"++ie 40-50 interactively examine 40:50\n"
"++ie >1000 40-50 interactively examine the subset\n"
"++ of locations 40:50 that are >1000\n"
"++ex rx0 50060 examine 50060, RX unit 0\n"
"++ex rx sbuf[3-6] examine SBUF[3] to SBUF[6] in RX\n"
"++de all 0 set main memory to 0\n"
"++de &77>0 0 set all addresses whose low order\n"
"++ bits are non-zero to 0\n"
"++ex -m @memdump.txt 0-7777 dump memory to file\n\n"
" Note: to terminate an interactive command, simply type a bad value\n"
" (eg, XYZ) when input is requested.\n"
#define HLP_EVALUATE "*Commands Evaluating_Instructions"
/***************** 80 character line width template *************************/
"2Evaluating Instructions\n"
" The EVAL command evaluates a symbolic expression and returns the equivalent\n"
" numeric value. This is useful for obtaining numeric arguments for a search\n"
" command:\n\n"
"++EVAL <expression>\n"
/***************** 80 character line width template *************************/
"2Loading and Saving Programs\n"
#define HLP_LOAD "*Commands Loading_and_Saving_Programs LOAD"
"3LOAD\n"
" The LOAD command (abbreviation LO) loads a file in binary loader format:\n\n"
"++LOAD <filename> {implementation options}\n\n"
" The types of formats supported are implementation specific. Options (such\n"
" as load within range) are also implementation specific.\n\n"
#define HLP_DUMP "*Commands Loading_and_Saving_Programs DUMP"
"3DUMP\n"
" The DUMP command (abbreviation DU) dumps memory in binary loader format:\n\n"
"++DUMP <filename> {implementation options}\n\n"
" The types of formats supported are implementation specific. Options (such\n"
" as dump within range) are also implementation specific.\n"
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"2Saving and Restoring State\n"
#define HLP_SAVE "*Commands Saving_and_Restoring_State SAVE"
"3SAVE\n"
" The SAVE command (abbreviation SA) save the complete state of the simulator\n"
" to a file. This includes the contents of main memory and all registers,\n"
" and the I/O connections of devices:\n\n"
"++SAVE <filename>\n\n"
#define HLP_RESTORE "*Commands Saving_and_Restoring_State RESTORE"
"3RESTORE\n"
" The RESTORE command (abbreviation REST, alternately GET) restores a\n"
" previously saved simulator state:\n\n"
"++RESTORE <filename>\n"
"4Switches\n"
" Switches can influence the output and behavior of the RESTORE command\n\n"
"++-Q Suppresses version warning messages\n"
"++-D Suppress detaching and attaching devices during a restore\n"
"++-F Overrides the related file timestamp validation check\n"
"\n"
"4Notes:\n"
" 1) SAVE file format compresses zeroes to minimize file size.\n"
" 2) The simulator can't restore active incoming telnet sessions to\n"
" multiplexer devices, but the listening ports will be restored across a\n"
" save/restore.\n"
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"2Running A Simulated Program\n"
#define HLP_RUN "*Commands Running_A_Simulated_Program RUN"
"3RUN {start_pc_addr} {UNTIL stop_pc_addr|\"output-string\"}\n"
" The RUN command (abbreviated RU) resets all devices, deposits its argument\n"
" (if given) in the PC, and starts execution. If no argument is given,\n"
" execution starts at the current PC.\n\n"
" The optional UNTIL argument specifies a stop criteria for execution.\n"
" There are two forms of execution stop criteria:\n"
"+1. A temporary breakpoint (which exists only until it is encountered).\n"
"+2. A string which will stop execution when the simulator has output\n"
"++the indicated string.\n"
#define HLP_GO "*Commands Running_A_Simulated_Program GO"
"3GO {start_pc_addr} {UNTIL stop_pc_addr|\"output-string\"}\n"
" The GO command does not reset devices, deposits its argument (if given)\n"
" in the PC, and starts execution. If no argument is given, execution\n"
" starts at the current PC.\n\n"
" The optional UNTIL argument specifies a stop criteria for execution.\n"
" There are two forms of execution stop criteria:\n"
"+1. A temporary breakpoint (which exists only until it is encountered).\n"
"+2. A string which will stop execution when the simulator has output\n"
"++the indicated string.\n"
#define HLP_CONTINUE "*Commands Running_A_Simulated_Program CONTINUE"
"3CONTINUE\n"
" The CONT command (abbreviated CO) does not reset devices and resumes\n"
" execution at the current PC.\n"
#define HLP_STEP "*Commands Running_A_Simulated_Program STEP"
"3STEP\n"
" The STEP command (abbreviated S) resumes execution at the current PC for\n"
" the number of instructions given by its argument. If no argument is\n"
" supplied, one instruction is executed.\n"
"4Switches\n"
" If the STEP command is invoked with the -T switch, the step command will\n"
" cause execution to run for microseconds rather than instructions.\n"
#define HLP_NEXT "*Commands Running_A_Simulated_Program NEXT"
"3NEXT\n"
" The NEXT command (abbreviated N) resumes execution at the current PC for\n"
" one instruction, attempting to execute through a subroutine calls.\n"
" If the next instruction to be executed is not a subroutine call,\n"
" one instruction is executed.\n"
#define HLP_BOOT "*Commands Running_A_Simulated_Program BOOT"
"3BOOT\n"
" The BOOT command (abbreviated BO) resets all devices and bootstraps the\n"
" device and unit given by its argument. If no unit is supplied, unit 0 is\n"
" bootstrapped. The specified unit must be attached.\n"
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"2Stopping The Simulator\n"
" Programs run until the simulator detects an error or stop condition, or\n"
" until the user forces a stop condition.\n"
"3Simulator Detected Stop Conditions\n"
" These simulator-detected conditions stop simulation:\n\n"
"++- HALT instruction. If a HALT instruction is decoded, simulation stops.\n"
"++- Breakpoint. The simulator may support breakpoints (see below).\n"
"++- I/O error. If an I/O error occurs during simulation of an I/O\n"
"+++operation, and the device stop-on-I/O-error flag is set, simulation\n"
"+++usually stops.\n\n"
"++- Processor condition. Certain processor conditions can stop\n"
"+++simulation; these are described with the individual simulators.\n"
"3User Specified Stop Conditions\n"
" Typing the interrupt character stops simulation. The interrupt character\n"
" is defined by the WRU (where are you) console option and is initially set\n"
" to 005 (^E).\n\n"
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#define HLP_BREAK "*Commands Stopping_The_Simulator User_Specified_Stop_Conditions BREAK"
#define HLP_NOBREAK "*Commands Stopping_The_Simulator User_Specified_Stop_Conditions BREAK"
"4Breakpoints\n"
" A simulator may offer breakpoint capability. A simulator may define\n"
" breakpoints of different types, identified by letter (for example, E for\n"
" execution, R for read, W for write, etc). At the moment, most simulators\n"
" support only E (execution) breakpoints.\n\n"
" Associated with a breakpoint are a count and, optionally, one or more\n"
" actions. Each time the breakpoint is taken, the associated count is\n"
" decremented. If the count is less than or equal to 0, the breakpoint\n"
" occurs; otherwise, it is deferred. When the breakpoint occurs, the\n"
" optional actions are automatically executed.\n\n"
" A breakpoint is set by the BREAK or the SET BREAK commands:\n\n"
"++BREAK {-types} {<addr range>{[count]},{addr range...}}{;action;action...}\n"
"++SET BREAK {-types} {<addr range>{[count]},{addr range...}}{;action;action...}\n\n"
" If no type is specified, the simulator-specific default breakpoint type\n"
" (usually E for execution) is used. If no address range is specified, the\n"
" current PC is used. As with EXAMINE and DEPOSIT, an address range may be a\n"
" single address, a range of addresses low-high, or a relative range of\n"
" address/length.\n"
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"5Displaying Breakpoints\n"
" Currently set breakpoints can be displayed with the SHOW BREAK command:\n\n"
"++SHOW {-C} {-types} BREAK {ALL|<addr range>{,<addr range>...}}\n\n"
" Locations with breakpoints of the specified type are displayed.\n\n"
" The -C switch displays the selected breakpoint(s) formatted as commands\n"
" which may be subsequently used to establish the same breakpoint(s).\n\n"
"5Removing Breakpoints\n"
" Breakpoints can be cleared by the NOBREAK or the SET NOBREAK commands.\n"
"5Examples\n"
"++BREAK set E break at current PC\n"
"++BREAK -e 200 set E break at 200\n"
"++BREAK 2000/2[2] set E breaks at 2000,2001 with count = 2\n"
"++BREAK 100;EX AC;D MQ 0 set E break at 100 with actions EX AC and\n"
"+++++++++D MQ 0\n"
"++BREAK 100; delete action on break at 100\n\n"
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#define HLP_DEBUG "*Commands Stopping_The_Simulator User_Specified_Stop_Conditions DEBUG"
#define HLP_NODEBUG "*Commands Stopping_The_Simulator User_Specified_Stop_Conditions DEBUG"
"4Debug\n"
" The DEBUG snd NODEBUG commands are aliases for the \"SET DEBUG\" and\n"
" \"SET NODEBUG\" commands. Additionally, support is provided that is\n"
" equivalent to the \"SET <dev> DEBUG=opt1{;opt2}\" and\n"
" \"SET <dev> NODEBUG=opt1{;opt2}\" commands.\n\n"
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"2Connecting and Disconnecting Devices\n"
" Except for main memory and network devices, units are simulated as\n"
" unstructured binary disk files in the host file system. Before using a\n"
" simulated unit, the user must specify the file to be accessed by that unit.\n"
#define HLP_ATTACH "*Commands Connecting_and_Disconnecting_Devices ATTACH"
"3ATTACH\n"
" The ATTACH (abbreviation AT) command associates a unit and a file:\n"
"++ATTACH <unit> <filename>\n\n"
" Some devices have more detailed or specific help available with:\n\n"
"++HELP <device> ATTACH\n\n"
"4Switches\n"
"5-n\n"
" If the -n switch is specified when an attach is executed, a new file is\n"
" created, and an appropriate message is printed.\n"
"5-e\n"
" If the file does not exist, and the -e switch was not specified, a new\n"
" file is created, and an appropriate message is printed. If the -e switch\n"
" was specified, a new file is not created, and an error message is printed.\n"
"5-r\n"
" If the -r switch is specified, or the file is write protected, ATTACH tries\n"
" to open the file read only. If the file does not exist, or the unit does\n"
" not support read only operation, an error occurs. Input-only devices, such\n"
" as paper-tape readers, and devices with write lock switches, such as disks\n"
" and tapes, support read only operation; other devices do not. If a file is\n"
" attached read only, its contents can be examined but not modified.\n"
"5-q\n"
" If the -q switch is specified when creating a new file (-n) or opening one\n"
" read only (-r), any messages announcing these facts will be suppressed.\n"
"5-f\n"
" For simulated magnetic tapes, the ATTACH command can specify the format of\n"