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binutils-gdb/gdb/rdi-share/unixcomm.c
Fernando Nasser 608d5915ac 2000-02-25 Fernando Nasser <fnasser@cygnus.com> 
From: Thomas Zenker <thz@Lennartz-electronic.DE>
        * rdi-share/hsys.c: to compile under 4.4BSD derived systems (FreeBSD,
        NetBSD...) sys_errlist should not be declared in hsys.c.
        NEED_SYSERRLIST is set already by configure, so we can use it.
        * rdi-share/unixcomm.c: 4.4BSD derived systems define BSD, but are
        posix compliant and we should not work with the old compatibility
        stuff.  Because of that I undef BSD in case of FBSD etc and include
        sys/ioctl to get the flags.
        * rdi-share/unixcomm.c: If the TIOCEXCL flags exists set serial line
        for exclusive use.
2000-02-25 16:37:32 +00:00

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/*
* Copyright (C) 1995 Advanced RISC Machines Limited. All rights reserved.
*
* This software may be freely used, copied, modified, and distributed
* provided that the above copyright notice is preserved in all copies of the
* software.
*/
/* -*-C-*-
*
* $Revision$
* $Date$
*
*/
#ifdef __hpux
# define _POSIX_SOURCE 1
#endif
#include <stdio.h>
#include <unistd.h>
#include <ctype.h>
#ifdef __hpux
# define _TERMIOS_INCLUDED
# include <sys/termio.h>
# undef _TERMIOS_INCLUDED
#else
# include <termios.h>
#endif
#include <string.h>
#include <fcntl.h>
#include <errno.h>
#include <stdarg.h>
#include <sys/types.h>
#include <sys/time.h>
#if defined (__FreeBSD__) || defined (__NetBSD__) || defined (__OpenBSD__) || defined (bsdi)
#undef BSD
#include <sys/ioctl.h>
#endif
#ifdef sun
# include <sys/ioccom.h>
# ifdef __svr4__
# include <sys/bpp_io.h>
# else
# include <sbusdev/bpp_io.h>
# endif
#endif
#ifdef BSD
# ifdef sun
# include <sys/ttydev.h>
# endif
# ifdef __alpha
# include <sys/ioctl.h>
# else
# include <sys/filio.h>
# endif
#endif
#ifdef __hpux
# define _INCLUDE_HPUX_SOURCE
# include <sys/ioctl.h>
# undef _INCLUDE_HPUX_SOURCE
#endif
#include "host.h"
#include "unixcomm.h"
#define PP_TIMEOUT 1 /* seconds */
#ifdef sun
#define SERIAL_PREFIX "/dev/tty"
#define SERPORT1 "/dev/ttya"
#define SERPORT2 "/dev/ttyb"
#define PARPORT1 "/dev/bpp0"
#define PARPORT2 "/dev/bpp1"
#endif
#ifdef __hpux
#define SERIAL_PREFIX "/dev/tty"
#define SERPORT1 "/dev/tty00"
#define SERPORT2 "/dev/tty01"
#define PARPORT1 "/dev/ptr_parallel"
#define PARPORT2 "/dev/ptr_parallel"
#endif
#ifdef __linux__
#define SERIAL_PREFIX "/dev/ttyS"
#define SERPORT1 "/dev/ttyS0"
#define SERPORT2 "/dev/ttyS1"
#define PARPORT1 "/dev/par0"
#define PARPORT2 "/dev/par1"
#endif
#if defined (__FreeBSD__) || defined (__NetBSD__) || defined (__OpenBSD__) || defined (bsdi)
#define SERIAL_PREFIX "/dev/cuaa"
#define SERPORT1 "/dev/cuaa0"
#define SERPORT2 "/dev/cuaa1"
#define PARPORT1 "/dev/lpt0"
#define PARPORT2 "/dev/lpt1"
#endif
#if defined(_WIN32) || defined (__CYGWIN32__)
#define SERIAL_PREFIX "com"
#define SERPORT1 "com1"
#define SERPORT2 "com2"
#define PARPORT1 "lpt1"
#define PARPORT2 "lpt2"
#endif
/*
* Parallel port output pins, used for signalling to target
*/
#ifdef sun
struct bpp_pins bp;
#endif
static int serpfd = -1;
static int parpfd = -1;
extern const char *Unix_MatchValidSerialDevice(const char *name)
{
int i=0;
char *sername=NULL;
/* Accept no name as the default serial port */
if (name == NULL) {
return SERPORT1;
}
/* Look for the simple cases - 1,2,s,S,/dev/... first, and
* afterwards look for S=... clauses, which need parsing properly.
*/
/* Accept /dev/tty* where * is limited */
if (strlen(name) == strlen(SERPORT1)
&& strncmp(name, SERIAL_PREFIX, strlen (SERIAL_PREFIX)) == 0)
{
return name;
}
/* Accept "1" or "2" or "S" - S is equivalent to "1" */
if (strcmp(name, "1") == 0 ||
strcmp(name, "S") == 0 || strcmp(name, "s") == 0) {
return SERPORT1;
}
if (strcmp(name, "2") == 0) return SERPORT2;
/* It wasn't one of the simple cases, so now we have to parse it
* properly
*/
do {
switch (name[i]) {
case ',':
/* Skip over commas */
i++;
break;
default:
return 0;
/* Unexpected character => error - not matched */
case 0:
/* End of string means return whatever we have matched */
return sername;
case 's':
case 'S':
case 'h':
case 'H': {
char ch = tolower(name[i]);
int j, continue_from, len;
/* If the next character is a comma or a NULL then this is
* a request for the default Serial port
*/
if (name[++i] == 0 || name[i] == ',') {
if (ch=='s')
sername=SERPORT1;
break;
}
/* Next character must be an = */
if (name[i] != '=') return 0;
/* Search for the end of the port spec. (ends in NULL or ,) */
for (j= ++i; name[j] != 0 && name[j] != ','; j++)
; /* Do nothing */
/* Notice whether this is the last thing to parse or not
* and also calaculate the length of the string
*/
if (name[j] == '0') continue_from = -1;
else continue_from = j;
len=(j-i);
/* And now try to match the serial / parallel port */
switch (ch) {
case 's': {
/* Match serial port */
if (len==1) {
if (name[i]=='1')
sername=SERPORT1;
else if (name[i]=='2')
sername=SERPORT2;
} else if (len==strlen(SERPORT1)) {
if (strncmp(name+i,SERPORT1,strlen(SERPORT1)) == 0)
sername=SERPORT1;
else if (strncmp(name+i,SERPORT2,strlen(SERPORT2)) == 0)
sername=SERPORT2;
}
break;
}
case 'h':
/* We don't actually deal with the H case here, we just
* match it and allow it through.
*/
break;
}
if (continue_from == -1) return sername;
i = continue_from;
break;
}
}
} while (1);
return 0;
}
extern int Unix_IsSerialInUse(void)
{
if (serpfd >= 0)
return -1;
return 0;
}
extern int Unix_OpenSerial(const char *name)
{
#if defined(BSD) || defined(__CYGWIN32__)
serpfd = open(name, O_RDWR);
#else
serpfd = open(name, O_RDWR | O_NONBLOCK);
#endif
if (serpfd < 0) {
perror("open");
return -1;
}
#ifdef TIOCEXCL
if (ioctl(serpfd, TIOCEXCL) < 0) {
close(serpfd);
perror("ioctl: TIOCEXCL");
return -1;
}
#endif
return 0;
}
extern void Unix_CloseSerial(void)
{
if (serpfd >= 0)
{
(void)close(serpfd);
serpfd = -1;
}
}
extern int Unix_ReadSerial(unsigned char *buf, int n, bool block)
{
fd_set fdset;
struct timeval tv;
int err;
FD_ZERO(&fdset);
FD_SET(serpfd, &fdset);
tv.tv_sec = 0;
tv.tv_usec = (block ? 10000 : 0);
err = select(serpfd + 1, &fdset, NULL, NULL, &tv);
if (err < 0 && errno != EINTR)
{
#ifdef DEBUG
perror("select");
#endif
panic("select failure");
return -1;
}
else if (err > 0 && FD_ISSET(serpfd, &fdset))
{
int s;
s = read(serpfd, buf, n);
if (s < 0)
perror("read:");
return s;
}
else /* err == 0 || FD_CLR(serpfd, &fdset) */
{
errno = ERRNO_FOR_BLOCKED_IO;
return -1;
}
}
extern int Unix_WriteSerial(unsigned char *buf, int n)
{
return write(serpfd, buf, n);
}
extern void Unix_ResetSerial(void)
{
struct termios terminfo;
tcgetattr(serpfd, &terminfo);
terminfo.c_lflag &= ~(ICANON | ISIG | ECHO | IEXTEN);
terminfo.c_iflag &= ~(IGNCR | INPCK | ISTRIP | ICRNL | BRKINT);
terminfo.c_iflag |= (IXON | IXOFF | IGNBRK);
terminfo.c_cflag = (terminfo.c_cflag & ~CSIZE) | CS8 | CREAD;
terminfo.c_cflag &= ~PARENB;
terminfo.c_cc[VMIN] = 1;
terminfo.c_cc[VTIME] = 0;
terminfo.c_oflag &= ~OPOST;
tcsetattr(serpfd, TCSAFLUSH, &terminfo);
}
extern void Unix_SetSerialBaudRate(int baudrate)
{
struct termios terminfo;
tcgetattr(serpfd, &terminfo);
cfsetospeed(&terminfo, baudrate);
cfsetispeed(&terminfo, baudrate);
tcsetattr(serpfd, TCSAFLUSH, &terminfo);
}
extern void Unix_ioctlNonBlocking(void)
{
#if defined(BSD)
int nonblockingIO = 1;
(void)ioctl(serpfd, FIONBIO, &nonblockingIO);
if (parpfd != -1)
(void)ioctl(parpfd, FIONBIO, &nonblockingIO);
#endif
}
extern void Unix_IsValidParallelDevice(
const char *portstring, char **sername, char **parname)
{
int i=0;
*sername=NULL;
*parname=NULL;
/* Do not recognise a NULL portstring */
if (portstring==NULL) return;
do {
switch (portstring[i]) {
case ',':
/* Skip over commas */
i++;
break;
default:
case 0:
/* End of string or bad characcter means we have finished */
return;
case 's':
case 'S':
case 'p':
case 'P':
case 'h':
case 'H': {
char ch = tolower(portstring[i]);
int j, continue_from, len;
/* If the next character is a comma or a NULL then this is
* a request for the default Serial or Parallel port
*/
if (portstring[++i] == 0 || portstring[i] == ',') {
if (ch=='s') *sername=SERPORT1;
else if (ch=='p') *parname=PARPORT1;
break;
}
/* Next character must be an = */
if (portstring[i] != '=') return;
/* Search for the end of the port spec. (ends in NULL or ,) */
for (j= ++i; portstring[j] != 0 && portstring[j] != ','; j++)
; /* Do nothing */
/* Notice whether this is the last thing to parse or not
* and also calaculate the length of the string
*/
if (portstring[j] == '0') continue_from = -1;
else continue_from = j;
len=(j-i);
/* And now try to match the serial / parallel port */
switch (ch) {
case 's': {
/* Match serial port */
if (len==1) {
if (portstring[i]=='1') *sername=SERPORT1;
else if (portstring[i]=='2') *sername=SERPORT2;
} else if (len==strlen(SERPORT1)) {
if (strncmp(portstring+i,SERPORT1,strlen(SERPORT1)) == 0)
*sername=SERPORT1;
else if (strncmp(portstring+i,SERPORT2,strlen(SERPORT2)) == 0)
*sername=SERPORT2;
}
break;
}
case 'p': {
/* Match parallel port */
if (len==1) {
if (portstring[i]=='1') *parname=PARPORT1;
else if (portstring[i]=='2') *parname=PARPORT2;
} else if (len==strlen(PARPORT1)) {
if (strncmp(portstring+i,PARPORT1,strlen(PARPORT1)) == 0)
*parname=PARPORT1;
else if (strncmp(portstring+i,PARPORT2,strlen(PARPORT2)) == 0)
*parname=PARPORT2;
}
break;
}
case 'h':
/* We don't actually deal with the H case here, we just
* match it and allow it through.
*/
break;
}
if (continue_from == -1) return;
i = continue_from;
break;
}
}
} while (1);
return; /* Will never get here */
}
extern int Unix_IsParallelInUse(void)
{
if (parpfd >= 0)
return -1;
return 0;
}
extern int Unix_OpenParallel(const char *name)
{
#if defined(BSD)
parpfd = open(name, O_RDWR);
#else
parpfd = open(name, O_RDWR | O_NONBLOCK);
#endif
if (parpfd < 0)
{
char errbuf[256];
sprintf(errbuf, "open %s", name);
perror(errbuf);
return -1;
}
return 0;
}
extern void Unix_CloseParallel(void)
{
if (parpfd >= 0)
{
(void)close(parpfd);
parpfd = -1;
}
}
extern unsigned int Unix_WriteParallel(unsigned char *buf, int n)
{
int ngone;
if ((ngone = write(parpfd, buf, n)) < 0)
{
/*
* we ignore errors (except for debug purposes)
*/
#ifdef DEBUG
char errbuf[256];
sprintf(errbuf, "send_packet: write");
perror(errbuf);
#endif
ngone = 0;
}
/* finished */
return (unsigned int)ngone;
}
#ifdef sun
extern void Unix_ResetParallel(void)
{
struct bpp_transfer_parms tp;
#ifdef DEBUG
printf("serpar_reset\n");
#endif
/*
* we need to set the parallel port up for BUSY handshaking,
* and select the timeout
*/
if (ioctl(parpfd, BPPIOC_GETPARMS, &tp) < 0)
{
#ifdef DEBUG
perror("ioctl(BPPIOCGETPARMS)");
#endif
panic("serpar_reset: cannot get BPP parameters");
}
tp.write_handshake = BPP_BUSY_HS;
tp.write_timeout = PP_TIMEOUT;
if (ioctl(parpfd, BPPIOC_SETPARMS, &tp) < 0)
{
#ifdef DEBUG
perror("ioctl(BPPIOC_SETPARMS)");
#endif
panic("serpar_reset: cannot set BPP parameters");
}
}
#else
/* Parallel not supported on HP */
extern void Unix_ResetParallel(void)
{
}
#endif
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