mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-27 04:52:05 +08:00
2cd58942b9
(DEPRECATED_SERIAL_FD): Delete. (SERIAL_DEBUG): Delete. (SERIAL_DEBUG_P): Delete. (SERIAL_DRAIN_OUTPUT): Delete. (SERIAL_FLUSH_OUTPUT): Delete. (SERIAL_FLUSH_INPUT): Delete. (SERIAL_SEND_BREAK): Delete. (SERIAL_RAW): Delete. (SERIAL_GET_TTY_STATE): Delete. (SERIAL_SET_TTY_STATE): Delete. (SERIAL_PRINT_TTY_STATE): Delete. (SERIAL_NOFLUSH_SET_TTY_STATE): Delete. (SERIAL_SETBAUDRATE): Delete. (SERIAL_SETSTOPBITS): Delete. (SERIAL_CAN_ASYNC_P): Delete. (SERIAL_IS_ASYNC_P): Delete. (SERIAL_UN_FDOPEN): Delete. (SERIAL_READCHAR): Delete. (SERIAL_CLOSE): Delete. (SERIAL_FDOPEN): Delete. (SERIAL_OPEN): Delete.
744 lines
21 KiB
C
744 lines
21 KiB
C
/* This file is part of GDB.
|
||
|
||
This program is free software; you can redistribute it and/or modify
|
||
it under the terms of the GNU General Public License as published by
|
||
the Free Software Foundation; either version 2 of the License, or
|
||
(at your option) any later version.
|
||
|
||
This program is distributed in the hope that it will be useful,
|
||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
GNU General Public License for more details.
|
||
|
||
You should have received a copy of the GNU General Public License
|
||
along with this program; if not, write to the Free Software
|
||
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
|
||
|
||
/* This started out life as code shared between the nindy monitor and
|
||
GDB. For various reasons, this is no longer true. Eventually, it
|
||
probably should be merged into remote-nindy.c. */
|
||
|
||
/******************************************************************************
|
||
*
|
||
* 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.
|
||
*
|
||
**************************************************************************/
|
||
|
||
/* Having these in a separate file from nindy.c is really ugly, and should
|
||
be merged with nindy.c. */
|
||
|
||
#include <stdio.h>
|
||
#if 0
|
||
#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 "ttycntl.h"
|
||
#endif
|
||
#include "defs.h"
|
||
#include "serial.h"
|
||
|
||
#include "block_io.h"
|
||
#include "gdb_wait.h"
|
||
#include "env.h"
|
||
|
||
/* Number of bytes that we send to nindy. I believe this is defined by
|
||
the protocol (it does not agree with REGISTER_BYTES). */
|
||
#define OLD_NINDY_REGISTER_BYTES ((36*4) + (4*8))
|
||
|
||
extern int quiet; /* 1 => stifle unnecessary messages */
|
||
|
||
/* tty connected to 960/NINDY board. */
|
||
extern struct serial *nindy_serial;
|
||
|
||
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 );
|
||
}
|
||
}
|
||
|
||
/*****************************
|
||
* *
|
||
* LOW-LEVEL COMMUNICATION *
|
||
* *
|
||
*****************************/
|
||
|
||
/* Read a single character from the remote end. */
|
||
|
||
static int
|
||
readchar()
|
||
{
|
||
/* FIXME: Do we really want to be reading without a timeout? */
|
||
return serial_readchar (nindy_serial, -1);
|
||
}
|
||
|
||
/******************************************************************************
|
||
* 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;
|
||
/* FIXME: check for error from readchar (). */
|
||
while ( (c = readchar()) != '#' ){
|
||
*bp++ = c;
|
||
csum += c;
|
||
}
|
||
*bp = 0;
|
||
|
||
/* FIXME: check for error from readchar (). */
|
||
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 );
|
||
serial_write (nindy_serial, "-", 1);
|
||
}
|
||
|
||
serial_write (nindy_serial, "+", 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 = 1;
|
||
do {
|
||
if ( resend ) {
|
||
serial_write ( nindy_serial, "\020", 1 );
|
||
serial_write( nindy_serial, cmd, strlen(cmd) );
|
||
serial_write( nindy_serial, checksum, strlen(checksum) );
|
||
}
|
||
/* FIXME: do we really want to be reading without timeout? */
|
||
ack = serial_readchar (nindy_serial, -1);
|
||
if (ack < 0)
|
||
{
|
||
fprintf (stderr, "error reading from serial port\n");
|
||
}
|
||
if ( ack == '-' ){
|
||
fprintf( stderr, "Remote NAK, resending\r\n" );
|
||
resend = 1;
|
||
} else if ( ack != '+' ){
|
||
fprintf( stderr, "Bad ACK, ignored: <%c>\r\n", ack );
|
||
resend = 0;
|
||
}
|
||
} 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; /* 1 means NINDY's response MUST be either "X00" (no
|
||
* error) or an error code "Xnn".
|
||
* 0 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();
|
||
}
|
||
}
|
||
|
||
/**********************************
|
||
* *
|
||
* NINDY INTERFACE ROUTINES *
|
||
* *
|
||
* ninConnect *MUST* be the first *
|
||
* one of these routines called. *
|
||
**********************************/
|
||
|
||
/******************************************************************************
|
||
* 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, 0 );
|
||
}
|
||
|
||
|
||
/******************************************************************************
|
||
* 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, 0 );
|
||
}
|
||
|
||
/******************************************************************************
|
||
* 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 */
|
||
{
|
||
/* How much do we send at a time? */
|
||
#define OLD_NINDY_MEMBYTES 1024
|
||
/* Buffer: hex in, binary out */
|
||
char buf[2*OLD_NINDY_MEMBYTES+20];
|
||
|
||
int cnt; /* Number of bytes in next transfer */
|
||
|
||
for ( ; len > 0; len -= OLD_NINDY_MEMBYTES ){
|
||
cnt = len > OLD_NINDY_MEMBYTES ? OLD_NINDY_MEMBYTES : len;
|
||
|
||
sprintf( buf, "m%x,%x", ninaddr, cnt );
|
||
send( buf, 0 );
|
||
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*OLD_NINDY_MEMBYTES+20]; /* Buffer: binary in, hex out */
|
||
char *p; /* Pointer into buffer */
|
||
int cnt; /* Number of bytes in next transfer */
|
||
|
||
for ( ; len > 0; len -= OLD_NINDY_MEMBYTES ){
|
||
cnt = len > OLD_NINDY_MEMBYTES ? OLD_NINDY_MEMBYTES : len;
|
||
|
||
sprintf( buf, "M%x,", destaddr );
|
||
p = buf + strlen(buf);
|
||
binhex( cnt, srcaddr, p );
|
||
*(p+(2*cnt)) = '\0';
|
||
send( buf, 1 );
|
||
|
||
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, 0 );
|
||
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, 1 );
|
||
}
|
||
|
||
/******************************************************************************
|
||
* 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*OLD_NINDY_REGISTER_BYTES)+10]; /* Registers in ASCII hex */
|
||
|
||
strcpy( buf, "r" );
|
||
send( buf, 0 );
|
||
hexbin( OLD_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*OLD_NINDY_REGISTER_BYTES)+10]; /* Registers in ASCII hex */
|
||
|
||
buf[0] = 'R';
|
||
binhex( OLD_NINDY_REGISTER_BYTES, regp, buf+1 );
|
||
buf[ (2*OLD_NINDY_REGISTER_BYTES)+1 ] = '\0';
|
||
|
||
send( buf, 1 );
|
||
}
|
||
|
||
|
||
/******************************************************************************
|
||
* ninReset:
|
||
* Ask NINDY to perform a soft reset; wait for the reset to complete.
|
||
******************************************************************************/
|
||
OninReset()
|
||
{
|
||
|
||
putpkt( "X" );
|
||
/* FIXME: check for error from readchar (). */
|
||
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()
|
||
{
|
||
/* FIXME: Imposes arbitrary limits on lengths of pathnames and such. */
|
||
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, 0 );
|
||
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 = -1;
|
||
break;
|
||
}
|
||
|
||
/* Tell NINDY to continue
|
||
*/
|
||
sprintf( buf, "e%x", retcode );
|
||
send( buf, 1 );
|
||
}
|
||
|
||
|
||
/******************************************************************************
|
||
* 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, 0 );
|
||
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.
|
||
*/
|
||
{
|
||
/* FIXME: seems to be an arbitrary limit on the length of the string. */
|
||
char buf[BUFSIZE]; /* String as 2 ASCII hex digits per byte */
|
||
int numchars; /* Length of string in bytes. */
|
||
|
||
sprintf( buf, "\"%x", ninaddr );
|
||
send( buf, 0 );
|
||
numchars = strlen(buf)/2;
|
||
hexbin( numchars, buf, hostaddr );
|
||
hostaddr[numchars] = '\0';
|
||
}
|
||
|
||
#if 0
|
||
/* never used. */
|
||
|
||
/******************************************************************************
|
||
* 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 */
|
||
{
|
||
/* FIXME: this is an arbitrary limit on the length of version string. */
|
||
char buf[BUFSIZE];
|
||
|
||
strcpy( buf, "v" );
|
||
send( buf, 0 );
|
||
strcpy( p, buf );
|
||
return strlen( buf );
|
||
}
|
||
#endif
|