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- /*****************************************************************************
- * Copyright 1990, 1992 Free Software Foundation, Inc.
- *
- * This code was donated by Intel Corp.
- *
- * Intel hereby grants you permission to copy, modify, and
- * distribute this software and its documentation. Intel grants
- * this permission provided that the above copyright notice
- * appears in all copies and that both the copyright notice and
- * this permission notice appear in supporting documentation. In
- * addition, Intel grants this permission provided that you
- * prominently mark as not part of the original any modifications
- * made to this software or documentation, and that the name of
- * Intel Corporation not be used in advertising or publicity
- * pertaining to distribution of the software or the documentation
- * without specific, written prior permission.
- *
- * Intel Corporation does not warrant, guarantee or make any
- * representations regarding the use of, or the results of the use
- * of, the software and documentation in terms of correctness,
- * accuracy, reliability, currentness, or otherwise; and you rely
- * on the software, documentation and results solely at your own risk.
- *****************************************************************************/
-
- static char rcsid[] =
- "Id: Onindy.c,v 1.1.1.1 1991/03/28 16:20:43 rich Exp $";
-
- /******************************************************************************
- *
- * NINDY INTERFACE ROUTINES
- *
- * This version of the NINDY interface routines supports NINDY versions
- * 2.13 and older. The older versions used a hex communication protocol,
- * instead of the (faster) current binary protocol. These routines have
- * been renamed by prepending the letter 'O' to their names, to avoid
- * conflict with the current version. The old versions are kept only for
- * backward compatibility, and well disappear in a future release.
- *
- ******************************************************************************/
-
- #include <stdio.h>
- #include <sys/ioctl.h>
- #include <sys/types.h> /* Needed by file.h on Sys V */
- #include <sys/file.h>
- #include <signal.h>
- #include <sys/stat.h>
- #include <fcntl.h> /* Needed on Sys V */
- #include "defs.h" /* needed for xmalloc */
- #include "ttycntl.h"
- #include "block_io.h"
- #include "wait.h"
- #include "env.h"
-
-
- #ifdef USG
- # include <unistd.h>
- # include "sysv.h"
- #else /* BSD */
- # include "string.h"
- #endif
-
- #ifndef TRUE
- #define TRUE 1
- #endif
-
- #ifndef FALSE
- #define FALSE 0
- #endif
-
- #ifndef ERROR
- #define ERROR -1
- #endif
-
- #define NINDY_REGISTER_BYTES ((36*4) + (4*8))
-
- extern void free ();
-
- static int quiet; /* TRUE => stifle unnecessary messages */
- static int nindy_fd; /* File descriptor of tty connected to 960/NINDY board*/
- static OninStrGet();
-
- /****************************
- * *
- * MISCELLANEOUS UTILTIES *
- * *
- ****************************/
-
-
- /******************************************************************************
- * fromhex:
- * Convert a hex ascii digit h to a binary integer
- ******************************************************************************/
- static
- int
- fromhex( h )
- int h;
- {
- if (h >= '0' && h <= '9'){
- h -= '0';
- } else if (h >= 'a' && h <= 'f'){
- h -= 'a' - 10;
- } else {
- h = 0;
- }
- return (h & 0xff);
- }
-
-
- /******************************************************************************
- * hexbin:
- * Convert a string of ASCII hex digits to a string of binary bytes.
- ******************************************************************************/
- static
- hexbin( n, hexp, binp )
- int n; /* Number of bytes to convert (twice this many digits)*/
- char *hexp; /* Get hex from here */
- char *binp; /* Put binary here */
- {
- while ( n-- ){
- *binp++ = (fromhex(*hexp) << 4) | fromhex(*(hexp+1));
- hexp += 2;
- }
- }
-
-
- /******************************************************************************
- * binhex:
- * Convert a string of binary bytes to a string of ASCII hex digits
- ******************************************************************************/
- static
- binhex( n, binp, hexp )
- int n; /* Number of bytes to convert */
- char *binp; /* Get binary from here */
- char *hexp; /* Place hex here */
- {
- static char tohex[] = "0123456789abcdef";
-
- while ( n-- ){
- *hexp++ = tohex[ (*binp >> 4) & 0xf ];
- *hexp++ = tohex[ *binp & 0xf ];
- binp++;
- }
- }
-
- /******************************************************************************
- * byte_order:
- * If the host byte order is different from 960 byte order (i.e., the
- * host is big-endian), reverse the bytes in the passed value; otherwise,
- * return the passed value unchanged.
- *
- ******************************************************************************/
- static
- long
- byte_order( n )
- long n;
- {
- long rev;
- int i;
- static short test = 0x1234;
-
- if (*((char *) &test) == 0x12) {
- /*
- * Big-endian host, swap the bytes.
- */
- rev = 0;
- for ( i = 0; i < sizeof(n); i++ ){
- rev <<= 8;
- rev |= n & 0xff;
- n >>= 8;
- }
- n = rev;
- }
- return n;
- }
-
- /******************************************************************************
- * say:
- * This is a printf that takes at most two arguments (in addition to the
- * format string) and that outputs nothing if verbose output has been
- * suppressed.
- ******************************************************************************/
- static
- say( fmt, arg1, arg2 )
- char *fmt;
- int arg1, arg2;
- {
- if ( !quiet ){
- printf( fmt, arg1, arg2 );
- fflush( stdout );
- }
- }
-
- /******************************************************************************
- * exists:
- * Creates a full pathname by concatenating up to three name components
- * onto a specified base name; optionally looks up the base name as a
- * runtime environment variable; and checks to see if the file or
- * directory specified by the pathname actually exists.
- *
- * Returns: the full pathname if it exists, NULL otherwise.
- * (returned pathname is in malloc'd memory and must be freed
- * by caller).
- *****************************************************************************/
- static
- char *
- exists( base, c1, c2, c3, env )
- char *base; /* Base directory of path */
- char *c1, *c2, *c3; /* Components (subdirectories and/or file name) to be
- * appended onto the base directory name. One or
- * more may be omitted by passing NULL pointers.
- */
- int env; /* If 1, '*base' is the name of an environment variable
- * to be examined for the base directory name;
- * otherwise, '*base' is the actual name of the
- * base directory.
- */
- {
- struct stat buf;/* For call to 'stat' -- never examined */
- char *path; /* Pointer to full pathname (malloc'd memory) */
- int len; /* Length of full pathname (incl. terminator) */
- extern char *getenv();
-
-
- if ( env ){
- base = getenv( base );
- if ( base == NULL ){
- return NULL;
- }
- }
-
- len = strlen(base) + 4;
- /* +4 for terminator and "/" before each component */
- if ( c1 != NULL ){
- len += strlen(c1);
- }
- if ( c2 != NULL ){
- len += strlen(c2);
- }
- if ( c3 != NULL ){
- len += strlen(c3);
- }
-
- path = xmalloc( len );
-
- strcpy( path, base );
- if ( c1 != NULL ){
- strcat( path, "/" );
- strcat( path, c1 );
- if ( c2 != NULL ){
- strcat( path, "/" );
- strcat( path, c2 );
- if ( c3 != NULL ){
- strcat( path, "/" );
- strcat( path, c3 );
- }
- }
- }
-
- if ( stat(path,&buf) != 0 ){
- free( path );
- path = NULL;
- }
- return path;
- }
-
- /*****************************
- * *
- * LOW-LEVEL COMMUNICATION *
- * *
- *****************************/
-
- /******************************************************************************
- * readchar:
- * Wait for a character to come in on the NINDY tty, and return it.
- ******************************************************************************/
- static
- readchar()
- {
- unsigned char c;
-
- while (read(nindy_fd,&c,1) != 1){
- ;
- }
- return c;
- }
-
-
- /******************************************************************************
- * getpkt:
- * Read a packet from a remote NINDY, with error checking, and return
- * it in the indicated buffer.
- ******************************************************************************/
- static
- getpkt (buf)
- char *buf;
- {
- unsigned char recv; /* Checksum received */
- unsigned char csum; /* Checksum calculated */
- char *bp; /* Poointer into the buffer */
- int c;
-
- while (1){
- csum = 0;
- bp = buf;
- while ( (c = readchar()) != '#' ){
- *bp++ = c;
- csum += c;
- }
- *bp = 0;
-
- recv = fromhex(readchar()) << 4;
- recv |= fromhex(readchar());
- if ( csum == recv ){
- break;
- }
-
- fprintf(stderr,
- "Bad checksum (recv=0x%02x; calc=0x%02x); retrying\r\n",
- recv, csum );
- write (nindy_fd, "-", 1);
- }
-
- write (nindy_fd, "+", 1);
- }
-
-
- /******************************************************************************
- * putpkt:
- * Checksum and send a gdb command to a remote NINDY, and wait for
- * positive acknowledgement.
- *
- ******************************************************************************/
- static
- putpkt( cmd )
- char *cmd; /* Command to be sent, without lead ^P (\020)
- * or trailing checksum
- */
- {
- char ack; /* Response received from NINDY */
- char checksum[4];
- char *p;
- unsigned int s;
- char resend;
-
- for ( s='\020', p=cmd; *p; p++ ){
- s += *p;
- }
- sprintf( checksum, "#%02x", s & 0xff );
-
- /* Send checksummed message over and over until we get a positive ack
- */
- resend = TRUE;
- do {
- if ( resend ){
- write( nindy_fd, "\020", 1 );
- write( nindy_fd, cmd, strlen(cmd) );
- write( nindy_fd, checksum, strlen(checksum) );
- }
- if ( read( nindy_fd, &ack, 1 ) != 1 ){
- fprintf(stderr,"oink\n");
- }
- if ( ack == '-' ){
- fprintf( stderr, "Remote NAK, resending\r\n" );
- resend = TRUE;
- } else if ( ack != '+' ){
- fprintf( stderr, "Bad ACK, ignored: <%c>\r\n", ack );
- resend = FALSE;
- }
- } while ( ack != '+' );
- }
-
-
-
- /******************************************************************************
- * send:
- * Send a message to a remote NINDY and return the reply in the same
- * buffer (clobbers the input message). Check for error responses
- * as indicated by the second argument.
- *
- ******************************************************************************/
- static
- send( buf, ack_required )
- char *buf; /* Message to be sent to NINDY; replaced by
- * NINDY's response.
- */
- int ack_required; /* TRUE means NINDY's response MUST be either "X00" (no
- * error) or an error code "Xnn".
- * FALSE means the it's OK as long as it doesn't
- * begin with "Xnn".
- */
- {
- int errnum;
- static char *errmsg[] = {
- "", /* X00 */
- "Buffer overflow", /* X01 */
- "Unknown command", /* X02 */
- "Wrong amount of data to load register(s)", /* X03 */
- "Missing command argument(s)", /* X04 */
- "Odd number of digits sent to load memory", /* X05 */
- "Unknown register name", /* X06 */
- "No such memory segment", /* X07 */
- "No breakpoint available", /* X08 */
- "Can't set requested baud rate", /* X09 */
- };
- # define NUMERRS ( sizeof(errmsg) / sizeof(errmsg[0]) )
-
- static char err0[] = "NINDY failed to acknowledge command: <%s>\r\n";
- static char err1[] = "Unknown error response from NINDY: <%s>\r\n";
- static char err2[] = "Error response %s from NINDY: %s\r\n";
-
- putpkt (buf);
- getpkt (buf);
-
- if ( buf[0] != 'X' ){
- if ( ack_required ){
- fprintf( stderr, err0, buf );
- abort();
- }
-
- } else if ( strcmp(buf,"X00") ){
- sscanf( &buf[1], "%x", &errnum );
- if ( errnum > NUMERRS ){
- fprintf( stderr, err1, buf );
- } else{
- fprintf( stderr, err2, buf, errmsg[errnum] );
- }
- abort();
- }
- }
-
- /************************
- * *
- * BAUD RATE ROUTINES *
- * *
- ************************/
-
- /* Table of baudrates known to be acceptable to NINDY. Each baud rate
- * appears both as character string and as a Unix baud rate constant.
- */
- struct baudrate {
- char *string;
- int rate;
- };
-
- static struct baudrate baudtab[] = {
- "1200", B1200,
- "2400", B2400,
- "4800", B4800,
- "9600", B9600,
- "19200", B19200,
- "38400", B38400,
- NULL, 0 /* End of table */
- };
-
-
- /******************************************************************************
- * parse_baudrate:
- * Look up the passed baud rate in the baudrate table. If found, change
- * our internal record of the current baud rate, but don't do anything
- * about the tty just now.
- *
- * Return pointer to baudrate structure on success, NULL on failure.
- ******************************************************************************/
- static
- struct baudrate *
- parse_baudrate(s)
- char *s; /* Desired baud rate, as an ASCII (decimal) string */
- {
- int i;
-
- for ( i=0; baudtab[i].string != NULL; i++ ){
- if ( !strcmp(baudtab[i].string,s) ){
- return &baudtab[i];
- }
- }
- return NULL;
- }
-
- /******************************************************************************
- * try_baudrate:
- * Try speaking to NINDY via the specified file descriptor at the
- * specified baudrate. Assume success it we can send an empty command
- * with a bogus checksum and receive a NAK (response of '-') back within
- * one second.
- *
- * Return 1 on success, 0 on failure.
- ******************************************************************************/
-
- static int saw_alarm;
-
- static void
- alarm_handler()
- {
- saw_alarm = 1;
- }
-
- static int
- try_baudrate( fd, brp )
- int fd;
- struct baudrate *brp;
- {
- TTY_STRUCT tty;
- char c;
- int n;
- void (*old_alarm)(); /* Save alarm signal handler here on entry */
-
-
- /* Set specified baud rate and flush all pending input */
- ioctl( fd, TIOCGETP, &tty );
- TTY_REMOTE( tty, brp->rate );
- ioctl( fd, TIOCSETP, &tty );
- tty_flush( fd );
-
- /* Send bogus command */
- write( fd, "\020#00", 4 );
-
- /* Wait until reponse comes back or one second passes */
- old_alarm = signal( SIGALRM,alarm_handler );
- saw_alarm = 0;
- alarm(1);
- do {
- n = 1;
- TTY_NBREAD(fd,n,&c);
- } while ( n<=0 && !saw_alarm );
-
- /* Turn off alarm */
- alarm(0);
- signal( SIGALRM,old_alarm );
-
- /* Did we get a '-' back ? */
- if ( (n > 0) && (c == '-') ){
- return 1;
- }
- return 0;
- }
-
- /******************************************************************************
- * autobaud:
- * Get NINDY talking over the specified file descriptor at the specified
- * baud rate. First see if NINDY's already talking at 'baudrate'. If
- * not, run through all the legal baudrates in 'baudtab' until one works,
- * and then tell NINDY to talk at 'baudrate' instead.
- ******************************************************************************/
- static
- autobaud( fd, brp )
- int fd;
- struct baudrate *brp;
- {
- int i;
- TTY_STRUCT tty;
-
-
- say("NINDY at wrong baud rate? Trying to autobaud...\n");
- i = 0;
- while ( 1 ){
- say( "\r%s... ", baudtab[i].string );
- if ( try_baudrate(fd,&baudtab[i]) ){
- break;
- }
- if ( baudtab[++i].string == NULL ){
- /* End of table -- wraparound */
- i = 0;
- say("\nAutobaud failed. Trying again...\n");
- }
- }
-
- /* Found NINDY's current baud rate; now change it.
- */
- say("Changing NINDY baudrate to %s\n", brp->string);
- OninBaud( brp->string );
-
- /* Change our baud rate back to rate to which we just set NINDY.
- */
- ioctl( fd, TIOCGETP, &tty );
- TTY_REMOTE( tty, brp->rate );
- ioctl( fd, TIOCSETP, &tty );
- }
-
- /**********************************
- * *
- * NINDY INTERFACE ROUTINES *
- * *
- * ninConnect *MUST* be the first *
- * one of these routines called. *
- **********************************/
-
-
- /******************************************************************************
- * ninBaud:
- * Ask NINDY to change the baud rate on its serial port.
- * Assumes we know the baud rate at which NINDY's currently talking.
- ******************************************************************************/
- OninBaud( baudrate )
- char *baudrate; /* Desired baud rate, as a string of ASCII decimal
- * digits.
- */
- {
- char buf[100]; /* Message buffer */
- char *p; /* Pointer into buffer */
- unsigned char csum; /* Calculated checksum */
-
- tty_flush( nindy_fd );
-
- /* Can't use putpkt() because after the baudrate change
- * NINDY's ack/nak will look like gibberish.
- */
- for ( p=baudrate, csum=020+'z'; *p; p++ ){
- csum += *p;
- }
- sprintf( buf, "\020z%s#%02x", baudrate, csum );
- write( nindy_fd, buf, strlen(buf) );
- }
-
-
- /******************************************************************************
- * ninBptDel:
- * Ask NINDY to delete the specified type of *hardware* breakpoint at
- * the specified address. If the 'addr' is -1, all breakpoints of
- * the specified type are deleted.
- ******************************************************************************/
- OninBptDel( addr, data )
- long addr; /* Address in 960 memory */
- int data; /* '1' => data bkpt, '0' => instruction breakpoint */
- {
- char buf[100];
-
- if ( addr == -1 ){
- sprintf( buf, "b%c", data ? '1' : '0' );
- } else {
- sprintf( buf, "b%c%x", data ? '1' : '0', addr );
- }
- return send( buf, FALSE );
- }
-
-
- /******************************************************************************
- * ninBptSet:
- * Ask NINDY to set the specified type of *hardware* breakpoint at
- * the specified address.
- ******************************************************************************/
- OninBptSet( addr, data )
- long addr; /* Address in 960 memory */
- int data; /* '1' => data bkpt, '0' => instruction breakpoint */
- {
- char buf[100];
-
- sprintf( buf, "B%c%x", data ? '1' : '0', addr );
- return send( buf, FALSE );
- }
-
-
- /******************************************************************************
- * ninConnect:
- * Open the specified tty. Get communications working at the specified
- * Flush any pending I/O on the tty.
- *
- * Return the file descriptor, or -1 on failure.
- ******************************************************************************/
- int
- OninConnect( name, baudrate, brk, silent )
- char *name; /* "/dev/ttyXX" to be opened */
- char *baudrate;/* baud rate: a string of ascii decimal digits (eg,"9600")*/
- int brk; /* 1 => send break to tty first thing after opening it*/
- int silent; /* 1 => stifle unnecessary messages when talking to
- * this tty.
- */
- {
- int i;
- char *p;
- struct baudrate *brp;
-
- /* We will try each of the following paths when trying to open the tty
- */
- static char *prefix[] = { "", "/dev/", "/dev/tty", NULL };
-
- quiet = silent; /* Make global to this file */
-
- for ( i=0; prefix[i] != NULL; i++ ){
- p = xmalloc(strlen(prefix[i]) + strlen(name) + 1 );
- strcpy( p, prefix[i] );
- strcat( p, name );
- nindy_fd = open(p,O_RDWR);
- if ( nindy_fd >= 0 ){
- #ifdef TIOCEXCL
- /* Exclusive use mode (hp9000 does not support it) */
- ioctl(nindy_fd,TIOCEXCL,NULL);
- #endif
- if ( brk ){
- send_break( nindy_fd );
- }
-
- brp = parse_baudrate( baudrate );
- if ( brp == NULL ){
- say("Illegal baudrate %s ignored; using 9600\n",
- baudrate);
- brp = parse_baudrate( "9600" );
- }
-
- if ( !try_baudrate(nindy_fd,brp) ){
- autobaud(nindy_fd,brp);
- }
- tty_flush( nindy_fd );
- say( "Connected to %s\n", p );
- free(p);
- break;
- }
- free(p);
- }
- return nindy_fd;
- }
-
-
-
- /******************************************************************************
- * ninDownload:
- * Ask NINDY to start up it's COFF downloader. Invoke 'sx' to perform
- * the XMODEM download from the host end.
- *
- * Return 1 on success, 0 on failure.
- ******************************************************************************/
-
- #define XMODEM "sx" /* Name of xmodem transfer utility */
-
- int
- OninDownload( fn, quiet )
- char *fn; /* Stripped copy of object file */
- int quiet;
- {
- char *p; /* Pointer to full pathname of sx utility */
- int success; /* Return value */
- int pid; /* Process ID of xmodem transfer utility */
- WAITTYPE w; /* xmodem transfer completion status */
- char buf[200];
-
-
- /* Make sure the xmodem utility is findable. This must be done before
- * we start up the NINDY end of the download (NINDY will hang if we
- * don't complete the download).
- */
- if ( ((p = exists("G960BIN",XMODEM,NULL,NULL,1)) == NULL)
- && ((p = exists("G960BASE","bin",XMODEM, NULL,1)) == NULL)
- #ifdef HOST
- && ((p = exists(DEFAULT_BASE,HOST,"bin",XMODEM,0)) == NULL)
- #endif
- ){
-
- fprintf(stderr,"Can't find '%s' download utility\n",XMODEM);
- fprintf(stderr,"Check env variables G960BIN and G960BASE\n");
- return 0;
- }
-
- if ( !quiet ){
- printf( "Downloading %s\n", fn );
- }
-
- /* Reset NINDY, wait until "reset-complete" ack,
- * and start up the NINDY end of the download.
- */
- OninReset();
- putpkt( "D" );
-
- /* Invoke x-modem transfer, a separate process. DON'T
- * use system() to do this -- under system V Unix, the
- * redirection of stdin/stdout causes the nindy tty to
- * lose all the transmission parameters we've set up.
- */
- success = 0;
-
- pid = fork();
- if ( pid == -1 ){
- perror( "Can't fork process:" );
-
- } else if ( pid == 0 ){ /* CHILD */
- dup2( nindy_fd, 0 ); /* Redirect stdin */
- dup2( nindy_fd, 1 ); /* Redirect stout */
- if ( quiet ){
- execl( p, p, "-q", fn, (char*)0 );
- } else {
- execl( p, p, fn, (char*)0 );
- }
- /* Don't get here unless execl fails */
- sprintf( buf, "Can't exec %s", p );
- perror( buf );
-
- } else { /* PARENT */
- if ( wait(&w) == -1 ){
- perror( "Wait failed" );
- } else if (WIFEXITED(w) && (WEXITSTATUS(w) == 0)){
- success = 1;
- }
- }
- return success;
- }
-
-
- /******************************************************************************
- * ninGdbExit:
- * Ask NINDY to leave GDB mode and print a NINDY prompt.
- * Since it'll no longer be in GDB mode, don't wait for a response.
- ******************************************************************************/
- OninGdbExit()
- {
- putpkt( "E" );
- }
-
-
- /******************************************************************************
- * ninGo:
- * Ask NINDY to start or continue execution of an application program
- * in it's memory at the current ip.
- ******************************************************************************/
- OninGo( step_flag )
- int step_flag; /* 1 => run in single-step mode */
- {
- putpkt( step_flag ? "s" : "c" );
- }
-
-
- /******************************************************************************
- * ninMemGet:
- * Read a string of bytes from NINDY's address space (960 memory).
- ******************************************************************************/
- OninMemGet(ninaddr, hostaddr, len)
- long ninaddr; /* Source address, in the 960 memory space */
- char *hostaddr; /* Destination address, in our memory space */
- int len; /* Number of bytes to read */
- {
- char buf[2*BUFSIZE+20]; /* Buffer: hex in, binary out */
- int cnt; /* Number of bytes in next transfer */
-
- for ( ; len > 0; len -= BUFSIZE ){
- cnt = len > BUFSIZE ? BUFSIZE : len;
-
- sprintf( buf, "m%x,%x", ninaddr, cnt );
- send( buf, FALSE );
- hexbin( cnt, buf, hostaddr );
-
- ninaddr += cnt;
- hostaddr += cnt;
- }
- }
-
-
- /******************************************************************************
- * ninMemPut:
- * Write a string of bytes into NINDY's address space (960 memory).
- ******************************************************************************/
- OninMemPut( destaddr, srcaddr, len )
- long destaddr; /* Destination address, in NINDY memory space */
- char *srcaddr; /* Source address, in our memory space */
- int len; /* Number of bytes to write */
- {
- char buf[2*BUFSIZE+20]; /* Buffer: binary in, hex out */
- char *p; /* Pointer into buffer */
- int cnt; /* Number of bytes in next transfer */
-
- for ( ; len > 0; len -= BUFSIZE ){
- cnt = len > BUFSIZE ? BUFSIZE : len;
-
- sprintf( buf, "M%x,", destaddr );
- p = buf + strlen(buf);
- binhex( cnt, srcaddr, p );
- *(p+(2*cnt)) = '\0';
- send( buf, TRUE );
-
- srcaddr += cnt;
- destaddr += cnt;
- }
- }
-
- /******************************************************************************
- * ninRegGet:
- * Retrieve the contents of a 960 register, and return them as a long
- * in host byte order.
- *
- * THIS ROUTINE CAN ONLY BE USED TO READ THE LOCAL, GLOBAL, AND
- * ip/ac/pc/tc REGISTERS.
- *
- ******************************************************************************/
- long
- OninRegGet( regname )
- char *regname; /* Register name recognized by NINDY, subject to the
- * above limitations.
- */
- {
- char buf[200];
- long val;
-
- sprintf( buf, "u%s", regname );
- send( buf, FALSE );
- hexbin( 4, buf, (char *)&val );
- return byte_order(val);
- }
-
- /******************************************************************************
- * ninRegPut:
- * Set the contents of a 960 register.
- *
- * THIS ROUTINE CAN ONLY BE USED TO SET THE LOCAL, GLOBAL, AND
- * ip/ac/pc/tc REGISTERS.
- *
- ******************************************************************************/
- OninRegPut( regname, val )
- char *regname; /* Register name recognized by NINDY, subject to the
- * above limitations.
- */
- long val; /* New contents of register, in host byte-order */
- {
- char buf[200];
-
- sprintf( buf, "U%s,%08x", regname, byte_order(val) );
- send( buf, TRUE );
- }
-
- /******************************************************************************
- * ninRegsGet:
- * Get a dump of the contents of the entire 960 register set. The
- * individual registers appear in the dump in the following order:
- *
- * pfp sp rip r3 r4 r5 r6 r7
- * r8 r9 r10 r11 r12 r13 r14 r15
- * g0 g1 g2 g3 g4 g5 g6 g7
- * g8 g9 g10 g11 g12 g13 g14 fp
- * pc ac ip tc fp0 fp1 fp2 fp3
- *
- * Each individual register comprises exactly 4 bytes, except for
- * fp0-fp3, which are 8 bytes.
- *
- * WARNING:
- * Each register value is in 960 (little-endian) byte order.
- *
- ******************************************************************************/
- OninRegsGet( regp )
- char *regp; /* Where to place the register dump */
- {
- char buf[(2*NINDY_REGISTER_BYTES)+10]; /* Registers in ASCII hex */
-
- strcpy( buf, "r" );
- send( buf, FALSE );
- hexbin( NINDY_REGISTER_BYTES, buf, regp );
- }
-
- /******************************************************************************
- * ninRegsPut:
- * Initialize the entire 960 register set to a specified set of values.
- * The format of the register value data should be the same as that
- * returned by ninRegsGet.
- *
- * WARNING:
- * Each register value should be in 960 (little-endian) byte order.
- *
- ******************************************************************************/
- OninRegsPut( regp )
- char *regp; /* Pointer to desired values of registers */
- {
- char buf[(2*NINDY_REGISTER_BYTES)+10]; /* Registers in ASCII hex */
-
- buf[0] = 'R';
- binhex( NINDY_REGISTER_BYTES, regp, buf+1 );
- buf[ (2*NINDY_REGISTER_BYTES)+1 ] = '\0';
-
- send( buf, TRUE );
- }
-
-
- /******************************************************************************
- * ninReset:
- * Ask NINDY to perform a soft reset; wait for the reset to complete.
- ******************************************************************************/
- OninReset()
- {
-
- putpkt( "X" );
- while ( readchar() != '+' ){
- ;
- }
- }
-
-
- /******************************************************************************
- * ninSrq:
- * Assume NINDY has stopped execution of the 960 application program in
- * order to process a host service request (srq). Ask NINDY for the
- * srq arguments, perform the requested service, and send an "srq
- * complete" message so NINDY will return control to the application.
- *
- ******************************************************************************/
- OninSrq()
- {
- char buf[BUFSIZE];
- int retcode;
- unsigned char srqnum;
- char *p;
- char *argp;
- int nargs;
- int arg[MAX_SRQ_ARGS];
-
-
- /* Get srq number and arguments
- */
- strcpy( buf, "!" );
- send( buf, FALSE );
- hexbin( 1, buf, (char *)&srqnum );
-
- /* Set up array of pointers the each of the individual
- * comma-separated args
- */
- nargs=0;
- argp = p = buf+2;
- while ( 1 ){
- while ( *p != ',' && *p != '\0' ){
- p++;
- }
- sscanf( argp, "%x", &arg[nargs++] );
- if ( *p == '\0' || nargs == MAX_SRQ_ARGS ){
- break;
- }
- argp = ++p;
- }
-
- /* Process Srq
- */
- switch( srqnum ){
- case BS_CLOSE:
- /* args: file descriptor */
- if ( arg[0] > 2 ){
- retcode = close( arg[0] );
- } else {
- retcode = 0;
- }
- break;
- case BS_CREAT:
- /* args: filename, mode */
- OninStrGet( arg[0], buf );
- retcode = creat(buf,arg[1]);
- break;
- case BS_OPEN:
- /* args: filename, flags, mode */
- OninStrGet( arg[0], buf );
- retcode = open(buf,arg[1],arg[2]);
- break;
- case BS_READ:
- /* args: file descriptor, buffer, count */
- retcode = read(arg[0],buf,arg[2]);
- if ( retcode > 0 ){
- OninMemPut( arg[1], buf, retcode );
- }
- break;
- case BS_SEEK:
- /* args: file descriptor, offset, whence */
- retcode = lseek(arg[0],arg[1],arg[2]);
- break;
- case BS_WRITE:
- /* args: file descriptor, buffer, count */
- OninMemGet( arg[1], buf, arg[2] );
- retcode = write(arg[0],buf,arg[2]);
- break;
- default:
- retcode = ERROR;
- break;
- }
-
- /* Tell NINDY to continue
- */
- sprintf( buf, "e%x", retcode );
- send( buf, TRUE );
- }
-
-
- /******************************************************************************
- * ninStopWhy:
- * Assume the application program has stopped (i.e., a DLE was received
- * from NINDY). Ask NINDY for status information describing the
- * reason for the halt.
- *
- * Returns a non-zero value if the user program has exited, 0 otherwise.
- * Also returns the following information, through passed pointers:
- * - why: an exit code if program the exited; otherwise the reason
- * why the program halted (see stop.h for values).
- * - contents of register ip (little-endian byte order)
- * - contents of register sp (little-endian byte order)
- * - contents of register fp (little-endian byte order)
- ******************************************************************************/
- char
- OninStopWhy( whyp, ipp, fpp, spp )
- char *whyp; /* Return the 'why' code through this pointer */
- char *ipp; /* Return contents of register ip through this pointer */
- char *fpp; /* Return contents of register fp through this pointer */
- char *spp; /* Return contents of register sp through this pointer */
- {
- char buf[30];
- char stop_exit;
-
- strcpy( buf, "?" );
- send( buf, FALSE );
- hexbin( 1, buf, &stop_exit );
- hexbin( 1, buf+2, whyp );
- hexbin( 4, buf+4, ipp );
- hexbin( 4, buf+12, fpp );
- hexbin( 4, buf+20, spp );
- return stop_exit;
- }
-
- /******************************************************************************
- * ninStrGet:
- * Read a '\0'-terminated string of data out of the 960 memory space.
- *
- ******************************************************************************/
- static
- OninStrGet( ninaddr, hostaddr )
- unsigned long ninaddr; /* Address of string in NINDY memory space */
- char *hostaddr; /* Address of the buffer to which string should
- * be copied.
- */
- {
- char buf[BUFSIZE]; /* String as 2 ASCII hex digits per byte */
- int numchars; /* Length of string in bytes. */
-
- sprintf( buf, "\"%x", ninaddr );
- send( buf, FALSE );
- numchars = strlen(buf)/2;
- hexbin( numchars, buf, hostaddr );
- hostaddr[numchars] = '\0';
- }
-
- /******************************************************************************
- * ninVersion:
- * Ask NINDY for version information about itself.
- * The information is sent as an ascii string in the form "x.xx,<arch>",
- * where,
- * x.xx is the version number
- * <arch> is the processor architecture: "KA", "KB", "MC", "CA" *
- *
- ******************************************************************************/
- int
- OninVersion( p )
- char *p; /* Where to place version string */
- {
- char buf[BUFSIZE];
-
- strcpy( buf, "v" );
- send( buf, FALSE );
- strcpy( p, buf );
- return strlen( buf );
- }
-