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This commit is contained in:
Bernd Mueller
2026-06-17 13:44:30 +02:00
commit adfd70813f
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5
m68k/lib/.cvsignore Normal file
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.deps
Makefile
Makefile.in
libBDM.a

153
m68k/lib/BDMlib.h Normal file
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/*
* Motorola Background Debug Mode Remote Library
* Copyright (C) 1998 Chris Johns
*
* Chris Johns
* Cybertec Pty Ltd
*
* cjohns@users.sourceforge.net
*
* 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.
*/
/*
* Routines to control a CPU32(+) or Coldfire target
*/
#ifndef _BDM_LIB_H_
#define _BDM_LIB_H_
#if __cplusplus
extern "C"
{
#endif
#include <bdm.h>
/*
* Configuration file name.
*/
#define M68K_BDM_INIT_FILE ".m68kbdminit"
/*
* All (int) routines return -1 on error, >=0 otherwise.
*/
void bdmReadConfiguration();
int bdmCheck (void);
int bdmOpen (const char *name);
int bdmClose (void);
int bdmIsOpen (void);
int bdmSetDelay (int delay);
int bdmSetDriverDebugFlag (int flag);
void bdmSetDebugFlag (int flag);
void bdmLogSyslog (void);
int bdmStatus (void);
const char *bdmErrorString (void);
/*
* Return a value in the host byte order. Useful for printing on
* the host.
*/
unsigned long bdmHostByteOrder (unsigned long value);
/*
* The following routines return, or are passed, data with byte
* order (big-endian or little-endian) of the machine on which
* the routines are running.
*
* Note, the control registers are the values documented in the
* devices data sheet.
*/
int bdmReadControlRegister (int code, unsigned long *lp);
int bdmReadDebugRegister (int code, unsigned long *lp);
int bdmReadSystemRegister (int code, unsigned long *lp);
int bdmReadRegister (int code, unsigned long *lp);
int bdmReadMBAR (unsigned long *lp);
int bdmWriteControlRegister (int code, unsigned long l);
int bdmWriteDebugRegister (int code, unsigned long l);
int bdmWriteSystemRegister (int code, unsigned long l);
int bdmWriteRegister (int code, unsigned long l);
int bdmWriteMBAR (unsigned long l);
int bdmReadLongWord (unsigned long address, unsigned long *lp);
int bdmReadWord (unsigned long address, unsigned short *sp);
int bdmReadByte (unsigned long address, unsigned char *cp);
int bdmWriteLongWord (unsigned long address, unsigned long l);
int bdmWriteWord (unsigned long address, unsigned short s);
int bdmWriteByte (unsigned long address, unsigned char c);
/*
* The following routines report the driver version, processor and
* interface type
*/
int bdmGetDrvVersion (unsigned int *ver);
int bdmGetProcessor (int *processor);
int bdmGetInterface (int *iface);
/*
* Get and set the PST signal state. 1 = enabled, 0 = disabled.
*/
int bdmColdfireGetPST (int *pst);
int bdmColdfireSetPST (int pst);
/*
* The following routines control execution of the target machine
*/
int bdmReset (void);
int bdmRestart (void);
int bdmRelease (void);
int bdmGo (void);
int bdmStop (void);
int bdmStep (void);
/*
* In the bdmReadMemory and bdmWriteMemory routines, cbuf is the address
* of a buffer whose contents are in M68k (i.e. big-endian) byte order.
*/
int bdmReadMemory (unsigned long address, unsigned char *cbuf, unsigned long nbytes);
int bdmWriteMemory (unsigned long address, unsigned char *cbuf, unsigned long nbytes);
/*
* The following routines are low-level and are used to implement a
* client/interface.
*/
int bdmIoctlInt (int code, int *var);
int bdmIoctlCommand (int code);
int bdmIoctlIo (int code, struct BDMioctl *ioc);
int bdmRead (unsigned char *cbuf, unsigned long nbytes);
int bdmWrite (unsigned char *cbuf, unsigned long nbytes);
/*
* BDM Configuration file support.
*/
void bdmReadConfiguration ();
const char* bdmConfigSkipWhiteSpace (const char* text);
const char* bdmConfigGet (const char* label, const char* last);
/*
* BDM debug channel. Applications may use this to have a common
* debug trace environment.
*/
void bdmInfo (const char *format, ...);
void bdmPrint (const char *format, ...);
#if __cplusplus
}
#endif
#endif

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m68k/lib/ChangeLog Normal file
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2002-02-10 Chris Johns <cjohns@cybertec.com.au>
* bdmIO.c: If on cygwin use our local stat.
* Makefile:
Copy the bdm.h driver file to the user include as the lib headers need it.
2001-09-01 Chris Johns <cjohns@cybertec.com.au>
* bdmIO.c: Changed Win9x to Win as Windows 2000 is supported.
* Makefile:
Added a path to the Cygwin Win32 API. This is a bug in Cygwin.
Fixed the paths to Win9x by changing to Win only.
2001-03-29 Chris Johns <cjohns@kiwi.objectivedesign.com.au>
* Makefile: Fixed the assignments so /usr prefix is used.
2001-03-29 Chris Johns <cjohns@cybertec.com.au>
* Makefile: Fixed the assignments so /usr prefix is used.
2001-02-11 Chris Johns <cjohns@cybertec.com.au>
* bdmRemote.c:
Seemed to lose the TCP_DELAY header when making Windows work.
2001-02-03 Chris Johns <cjohns@cybertec.com.au>
* bdmRemote.c,
bdmIO.c: Enabled remote support for Win9x.
2001-02-03 Chris Johns <ccj@acm.org>
* bdmRemote.c,
bdmIO.c: Enabled remote support for Win9x.
2000-11-15 Chris Johns <ccj@acm.org>
* bdmRemote.c: Support nesting of servers. Helps get around firewalls.
Use ioctl numbers which are operating system independent.
2000-08-31 Chris Johns <ccj@acm.org>
* bdmRemote.c: Made the ioctl numbers os independent.
* Makefile: Clean up.
22000-06-25 Chris Johns <ccj@acm.org>
* bfd.h: From a 5.0 build.
2000-06-07 Chris Johns <ccj@acm.org>
* bdmIO.c:
Moved the Win9x open/close etc override defines to the driver file.
Swap the bytes back after a write so the buffer is as the user passed
it.
2000-05-27 Chris Johns <ccj@acm.org>
* bdmIO.c: Added Win9x support.
* Makefile: Remote/local are controlled by (y/n).
A copy does not fail on a read only file.
Added the Win9x dependency.
2000-05-18 Chris Johns <ccj@acm.org>
* Makefile: Added remote support.
* BDMlib.h: Added low-level interface.
* bdmRemote.c: Fixed odd length data left in buffer bug.
2000-03-30 Chris Johns <ccj@acm.org>
* bdmIO.c, Makefile: Added remote server support.
* bdmRemote.c: New file.
1999-05-16 Eric Norum <eric@cls.usask.ca>
* bfd.h: Version from gdb-4.18.
Tue Apr 27 11:56:39 CST 1999 Eric Norum <eric@cls.usask.ca>
* bdmBFD.c:
Download code to Load Memory Address (LMA) rather than Virtual
Memory Address (VMA).
Tue Jan 12 01:23:43 1999 Chris Johns <ccj@acm.org>
* bdmBFD.c, Makefile:
Use a local bfd.h file to compile the download functions.
* ansidecl.h, bfd.h: Initial revision
Sat Jan 9 02:59:53 1999 Chris Johns <ccj@acm.org>
* Makefile:
Detect if a coff or rtems BFD library is present and build the download functions.
* bdmBFD.c: Initial revision
* bdmIO.c:
Split the download functions into a separate file to remove the BFD lib dependence.
* BDMlib.h, Makefile, bdmIO.c: Initial revision

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##
## $Id: Makefile.am,v 1.6 2008/03/06 10:35:40 cjohns Exp $
##
## This file is part of a free BDM package
##
## 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.
##
AM_CPPFLAGS = -I$(srcdir)/../driver
AM_CFLAGS =
if BDM_IOPERM
AM_CFLAGS += -DBDM_IOPERM=1
endif
if BDM_REMOTE
AM_CFLAGS += -DBDM_DEVICE_REMOTE=1
endif
if BDM_DRIVER
AM_CFLAGS += -DBDM_DEVICE_LOCAL=1
endif
if TBLCF_USB
AM_CFLAGS += -DBDM_TBLCF_USB=1
AM_CPPFLAGS += -I$(srcdir)/../tblcf
endif
lib_LIBRARIES = libBDM.a
include_HEADERS = \
BDMlib.h \
bdmRemote.h \
../driver/bdm.h
libBDM_a_SOURCES = \
bdmIO.c \
bdmRemote.c
# FIXME: these would belong to driver/Makefile.am, which we don't have
EXTRA_DIST = \
../driver/bdm.c \
../driver/ioperm/ioperm.c

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# @configure_input@
# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
# 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
# This Makefile.in is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
# PARTICULAR PURPOSE.
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pkgincludedir = $(includedir)/@PACKAGE@
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install_sh_DATA = $(install_sh) -c -m 644
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build_triplet = @build@
host_triplet = @host@
target_triplet = @target@
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@TBLCF_USB_TRUE@am__append_4 = -DBDM_TBLCF_USB=1
@TBLCF_USB_TRUE@am__append_5 = -I$(srcdir)/../tblcf
subdir = lib
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# Tell versions [3.59,3.63) of GNU make to not export all variables.
# Otherwise a system limit (for SysV at least) may be exceeded.
.NOEXPORT:

1283
m68k/lib/bdmIO.c Normal file
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m68k/lib/bdmRemote.c Normal file
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/*
* Motorola Background Debug Mode Remote Library
* Copyright (C) 1998 Chris Johns
*
* Based on `ser-tcp.c' in the gdb sources.
*
* 31-11-1999 Chris Johns (cjohns@users.sourceforge.net)
* Extended to support remote operation. See bdmRemote.c for details.
*
* Chris Johns
* Objective Design Systems
*
* cjohns@users.sourceforge.net
*
* 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.
*/
#define BDM_REMOTE_TRACE 0
#include <ctype.h>
#include <errno.h>
#include <stdlib.h>
#include <signal.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <sys/param.h>
#include <sys/time.h>
#if defined (__WIN32__)
#include <winsock2.h>
#else
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <sys/socket.h>
#if !defined (__CYGWIN__)
#include <netinet/tcp.h>
#endif
#endif
#include "bdmRemote.h"
#define BDM_REMOTE_OPEN_WAIT (15)
#define BDM_REMOTE_TIMEOUT (67)
#define BDM_REMOTE_BUF_SIZE (4096)
/*
* Limit of one BDM per process
*/
static const char *hex = "0123456789abcdef";
/*
* Ioctl code translation.
*/
static const int ioctl_code_table[] = {
BDM_INIT,
BDM_RESET_CHIP,
BDM_RESTART_CHIP,
BDM_STOP_CHIP,
BDM_STEP_CHIP,
BDM_GET_STATUS,
BDM_SPEED,
BDM_DEBUG,
BDM_RELEASE_CHIP,
BDM_GO,
BDM_READ_REG,
BDM_READ_SYSREG,
BDM_READ_LONGWORD,
BDM_READ_WORD,
BDM_READ_BYTE,
BDM_WRITE_REG,
BDM_WRITE_SYSREG,
BDM_WRITE_LONGWORD,
BDM_WRITE_WORD,
BDM_WRITE_BYTE,
BDM_GET_DRV_VER,
BDM_GET_CPU_TYPE,
BDM_GET_IF_TYPE,
BDM_GET_CF_PST, /* At the end to not break existing servers. */
BDM_SET_CF_PST,
BDM_READ_CTLREG,
BDM_WRITE_CTLREG,
BDM_READ_DBREG,
BDM_WRITE_DBREG
};
/*
* Win32 support not provided as standard.
*/
#if defined (__WIN32__)
#define MAXHOSTNAMELEN 64
#define ECONNREFUSED WSAECONNREFUSED
#define sleep(_s) Sleep((_s) * 1000000)
static int ws_started;
int
bdmInitWinSock ()
{
if (!ws_started) {
WORD wVersionRequested;
WSADATA wsaData;
int err;
wVersionRequested = MAKEWORD (2, 2);
err = WSAStartup (wVersionRequested, &wsaData);
if (err)
return 0;
ws_started = 1;
}
return 1;
}
#endif
/*
* Like strerror(), but knows about BDM driver errors, too.
*/
const char *
bdmRemoteStrerror (int error_no)
{
switch (error_no) {
case BDM_FAULT_TIMEOUT: return "Remote BDM server timeout";
}
return strerror (error_no);
}
/*
* Translation of local ioctl numbers to a protocol independent number
* to send over the link. Different client and server operating systems
* will generate different numbers.
*/
static int
bdmGenerateIOId (int code)
{
unsigned int id = 0;
while (id < (sizeof (ioctl_code_table) / sizeof (ioctl_code_table[0])))
if (ioctl_code_table[id] == code)
return id;
else
id++;
return -1;
}
static int
bdmSocketSend (int fd, char *buf, int buf_len)
{
int wrote;
#if BDM_REMOTE_TRACE
bdmPrint ("bdm-remote:send: [%d] %s\n", buf_len, buf);
#endif
#if defined (__WIN32__)
wrote = send (fd, buf, buf_len, 0);
#else
wrote = write (fd, buf, buf_len);
#endif
if (wrote < 0)
bdmPrint ("bdm-remote:send: socket write failed: %s\n",
strerror (errno));
return wrote;
}
static int
bdmRemoteWait (int fd, char *buf, int buf_len)
{
int numfds;
struct timeval tv;
fd_set readfds;
fd_set exceptfds;
int cread;
FD_ZERO (&readfds);
FD_ZERO (&exceptfds);
tv.tv_sec = BDM_REMOTE_TIMEOUT;
tv.tv_usec = 0;
FD_SET (fd, &readfds);
FD_SET (fd, &exceptfds);
while (1)
{
numfds = select (fd + 1, &readfds, 0, &exceptfds, &tv);
if (numfds <= 0) {
if (errno != EINTR) {
if ((errno == 0) && (tv.tv_sec == 0) && (tv.tv_usec == 0))
errno = BDM_FAULT_TIMEOUT;
return -1;
}
}
else {
memset (buf, 0, buf_len);
#if defined (__WIN32__)
cread = recv (fd, buf, buf_len - 1, 0);
#else
cread = read (fd, buf, buf_len - 1);
#endif
if (cread > 0) {
buf[cread] = 0;
#if BDM_REMOTE_TRACE
bdmPrint ("bdm-remote:wait: [%d] %s\n", cread, buf);
#endif
return cread;
}
if (cread < 0)
if (errno != EINTR)
return -1;
}
}
return -1;
}
int
bdmRemoteName (const char *name)
{
char lname[MAXHOSTNAMELEN];
char *port;
struct hostent *hostent;
#if defined (__WIN32__)
if (!bdmInitWinSock ()) {
errno = ENOENT;
return -1;
}
#endif
/*
* We need a ':' in the name to be remote.
*/
if (!strchr (name, ':'))
return 0;
/*
* If the user supplies a port, strip it.
*/
strncpy (lname, name, MAXHOSTNAMELEN);
port = strchr (lname, ':');
if (port)
*port = '\0';
hostent = gethostbyname (lname);
if (!hostent) {
bdmPrint ("bdm-remote:name: host look falied: %s\n", lname);
errno = ENOENT;
return 0;
}
return 1;
}
/*
* Open a remote link. The name is of the form :
*
* host:port/device
*/
int
bdmRemoteOpen (const char *name)
{
int fd = -1;
char lname[256];
char *port_str;
char *device = 0;
int port = 0;
struct hostent *hostent;
struct sockaddr_in sockaddr;
struct protoent *protoent;
struct servent *servent;
int reties;
int optarg;
char buf[BDM_REMOTE_BUF_SIZE];
int buf_len;
char *s;
#if defined (__WIN32__)
if (!bdmInitWinSock ()) {
bdmPrint ("bdm-remote:open: failed to initialise WinSock\n");
errno = ENOENT;
return -1;
}
#endif
strncpy (lname, name, sizeof (lname));
lname[sizeof (lname) - 1] = 0;
/*
* There can 2 types of files names passed:
*
* host:device
* host:port:device
*/
port_str = strchr (lname, ':');
if (port_str) {
device = strchr (port_str + 1, ':');
if (!device)
device = strchr (port_str + 1, '/');
if (device) {
lname[port_str - lname] = '\0';
port = atoi (port_str);
}
}
/*
* We cannot have a port of 0.
*/
if (port == 0) {
if ((servent = getservbyname ("bdm", "tcp"))) {
port = ntohs (servent->s_port);
}
}
if (port == 0) {
port = 6543;
}
if (!device)
device = port_str;
if (!device) {
bdmPrint ("bdm-remote:open: no device found\n");
errno = ENOENT;
return -1;
}
/*
* Get the host name.
*/
hostent = gethostbyname (lname);
if (!hostent) {
bdmPrint ("bdm-remote:open: gethostbyname (%s) failed\n", lname);
errno = ENOENT;
return -1;
}
/*
* Attempt to make a connection for 15 second. That is
* 15 attempts a second apart.
*/
for (reties = 0; reties < BDM_REMOTE_OPEN_WAIT; reties++)
{
fd = socket (PF_INET, SOCK_STREAM, 0);
if (fd < 0)
return -1;
/*
* Allow rapid reuse of this port.
*/
optarg = 1;
if (setsockopt (fd, SOL_SOCKET, SO_REUSEADDR,
(char *) &optarg, sizeof (optarg)) < 0) {
int save_errno = errno;
close (fd);
fd = -1;
errno = save_errno;
return -1;
}
/*
* Enable TCP keep alive process.
*/
optarg = 1;
if (setsockopt (fd, SOL_SOCKET, SO_KEEPALIVE,
(char *) &optarg, sizeof (optarg)) < 0) {
int save_errno = errno;
close (fd);
fd = -1;
errno = save_errno;
return -1;
}
sockaddr.sin_family = PF_INET;
sockaddr.sin_port = htons (port);
memcpy (&sockaddr.sin_addr.s_addr,
hostent->h_addr,
sizeof (struct in_addr));
if (!connect (fd,
(struct sockaddr *) &sockaddr,
sizeof (sockaddr)))
break;
close (fd);
fd = -1;
/*
* We retry for ECONNREFUSED because that is often a temporary
* condition, which happens when the server is being restarted.
*/
if (errno != ECONNREFUSED)
return -1;
sleep (1);
}
if (reties == BDM_REMOTE_OPEN_WAIT) {
bdmPrint ("bdm-remote:open: %s:%d:%s failed\n", lname, port, device);
errno = ENXIO;
return -1;
}
protoent = getprotobyname ("tcp");
if (!protoent) {
bdmPrint ("bdm-remote:open: getprotobyname failed\n");
close (fd);
return -1;
}
optarg = 1;
if (setsockopt (fd, protoent->p_proto,
TCP_NODELAY, (char *) &optarg, sizeof (optarg))) {
int save_errno = errno;
bdmPrint ("bdm-remote:open: setsockopt failed\n");
close (fd);
fd = -1;
errno = save_errno;
return -1;
}
/*
* If we don't do this, then GDB simply exits when the remote
* side dies.
*/
#if !defined (__WIN32__)
signal (SIGPIPE, SIG_IGN);
#endif
/*
* Say hello. This will cause the server to open the port.
*/
buf_len = 1 + sprintf (buf, "HELO %s", device);
if (bdmSocketSend (fd, buf, buf_len) != buf_len) {
int save_errno = errno;
close (fd);
fd = -1;
errno = save_errno;
return -1;
}
if (bdmRemoteWait (fd, buf, BDM_REMOTE_BUF_SIZE) < 0) {
int save_errno = errno;
bdmPrint ("bdm-remote:open: wait failed\n");
close (fd);
fd = -1;
errno = save_errno;
return -1;
}
/*
* Unpack the result.
*/
s = strstr (buf, "HELO");
if (!s) {
/* FIXME: need error message */
return -1;
}
s += sizeof "HELO";
errno = strtoul (s, NULL, 0);
if (errno) {
int save_errno = errno;
bdmRemoteClose (fd);
fd = -1;
errno = save_errno;
}
return fd;
}
/*
* Close a remote link.
*/
int
bdmRemoteClose (int fd)
{
char buf[BDM_REMOTE_BUF_SIZE];
strcpy (buf, "QUIT Later.");
bdmSocketSend (fd, buf, strlen (buf) + 1);
return close (fd);
}
/*
* Do an int-argument BDM ioctl
*/
int
bdmRemoteIoctlInt (int fd, int code, int *var)
{
char buf[BDM_REMOTE_BUF_SIZE];
int buf_len;
char *s;
int id;
/*
* Get a network id for the IO code.
*/
id = bdmGenerateIOId (code);
if (id < 0) {
errno = EINVAL;
return -1;
}
/*
* Pack the message and send.
*/
buf_len = 1 + sprintf (buf, "IOINT 0x%x,0x%x", id, *var);
if (bdmSocketSend (fd, buf, buf_len) != buf_len)
return -1;
if (bdmRemoteWait (fd, buf, BDM_REMOTE_BUF_SIZE) < 0)
return -1;
/*
* Unpack the result.
*/
s = strstr (buf, "IOINT");
if (!s) {
/* FIXME: need error message */
return -1;
}
s += sizeof "IOINT";
errno = strtoul (s, NULL, 0);
s = strchr (s, ',') + 1;
*var = strtoul (s, NULL, 0);
if (errno)
return -1;
return 0;
}
/*
* Do a command (no-argument) BDM ioctl
*/
int
bdmRemoteIoctlCommand (int fd, int code)
{
char buf[BDM_REMOTE_BUF_SIZE];
int buf_len;
char *s;
int id;
/*
* Get a network id for the IO code.
*/
id = bdmGenerateIOId (code);
if (id < 0) {
errno = EINVAL;
return -1;
}
/*
* Pack the message and send.
*/
buf_len = 1 + sprintf (buf, "IOCMD 0x%x", id);
if (bdmSocketSend (fd, buf, buf_len) != buf_len)
return -1;
if (bdmRemoteWait (fd, buf, BDM_REMOTE_BUF_SIZE) < 0)
return -1;
/*
* Unpack the result.
*/
s = strstr (buf, "IOCMD");
if (!s) {
/* FIXME: need error message */
return -1;
}
s += sizeof "IOCMD";
errno = strtoul (s, NULL, 0);
if (errno)
return -1;
return 0;
}
/*
* Do a BDMioctl-argument BDM ioctl
*/
int
bdmRemoteIoctlIo (int fd, int code, struct BDMioctl *ioc)
{
char buf[BDM_REMOTE_BUF_SIZE];
int buf_len;
char *s;
int id;
/*
* Get a network id for the IO code.
*/
id = bdmGenerateIOId (code);
if (id < 0) {
errno = EINVAL;
return -1;
}
/*
* Pack the message and send.
*/
buf_len = 1 + sprintf (buf, "IOIO 0x%x,0x%x,0x%x",
id, ioc->address, ioc->value);
if (bdmSocketSend (fd, buf, buf_len) != buf_len)
return -1;
if (bdmRemoteWait (fd, buf, BDM_REMOTE_BUF_SIZE) < 0)
return -1;
/*
* Unpack the result.
*/
s = strstr (buf, "IOIO");
if (!s) {
/* FIXME: need error message */
return -1;
}
s += sizeof "IOIO";
errno = strtoul (s, NULL, 0);
s = strchr (s, ',') + 1;
ioc->address = strtoul (s, NULL, 0);
s = strchr (s, ',') + 1;
ioc->value = strtoul (s, NULL, 0);
if (errno)
return -1;
return 0;
}
/*
* Do a BDM read
*/
int
bdmRemoteRead (int fd, unsigned char *cbuf, unsigned long nbytes)
{
char buf[BDM_REMOTE_BUF_SIZE];
int buf_index;
int buf_len;
unsigned long remote_nbytes;
unsigned long bytes;
unsigned char octet;
char *s;
/*
* Pack the message and send. For a read send the address and length.
* The server will return a protocol status code, the read protocol
* label, errno, the length then the data.
*/
buf_len = 1 + sprintf (buf, "READ %ld", nbytes);
if (bdmSocketSend (fd, buf, buf_len) != buf_len)
return -1;
buf_len = bdmRemoteWait (fd, buf, BDM_REMOTE_BUF_SIZE);
if (buf_len < 0)
return -1;
/*
* Unpack the result.
*/
s = strstr (buf, "READ");
if (!s) {
/* FIXME: need error message */
return -1;
}
s += sizeof "READ";
errno = strtoul (s, NULL, 0);
s = strchr (s, ',') + 1;
remote_nbytes = strtoul (s, NULL, 0);
/*
* We could receive an odd number of characters in a buffer
* and we need an even number of characters to complete a
* byte. So if a single character is left move it to the
* start of the buffer and append the next buffer of data.
*/
if (remote_nbytes) {
bytes = 0;
buf_index = strchr (s, ',') - buf + 1;
while (bytes < nbytes) {
if (buf_len < 2) {
int new_read;
new_read = bdmRemoteWait (fd, buf + buf_len,
BDM_REMOTE_BUF_SIZE - buf_len);
if (new_read < 0)
return -1;
buf_len += new_read;
}
while ((bytes < nbytes) && ((buf_len - buf_index) > 1)) {
if (buf[buf_index] > '9') {
buf[buf_index] = tolower (buf[buf_index]);
octet = buf[buf_index] - 'a' + 10;
}
else
octet = buf[buf_index] - '0';
buf_index++;
octet <<= 4;
if (buf[buf_index] > '9') {
buf[buf_index] = tolower (buf[buf_index]);
octet |= buf[buf_index] - 'a' + 10;
}
else
octet |= buf[buf_index] - '0';
buf_index++;
*cbuf = octet;
cbuf++;
bytes++;
}
if (buf_index < buf_len) {
buf[0] = buf[buf_index];
buf_len = 1;
}
else
buf_len = 0;
buf_index = 0;
}
}
return nbytes;
}
/*
* Do a BDM write
*/
int
bdmRemoteWrite (int fd, unsigned char *cbuf, unsigned long nbytes)
{
char buf[BDM_REMOTE_BUF_SIZE];
int buf_len;
unsigned long bytes;
char *s;
/*
* Pack the message and send. A write is a matter of
* formatting buffers of BDM_REMOTE_BUF_SIZE and streaming them to the
* server. This server uses the number of bytes at the start
* of the message to detect the number of bytes being sent.
*/
if (nbytes == 0)
return 0;
buf_len = sprintf (buf, "WRITE %ld,", nbytes);
bytes = 0;
while (bytes < nbytes) {
while ((bytes < nbytes) && ((BDM_REMOTE_BUF_SIZE - buf_len) > 2)) {
buf[buf_len] = hex[(*cbuf >> 4) & 0xf];
buf_len++;
buf[buf_len] = hex[*cbuf & 0xf];
buf_len++;
cbuf++;
bytes++;
}
buf[buf_len] = 0;
if (bdmSocketSend (fd, buf, buf_len) != buf_len)
return -1;
buf_len = 0;
}
if (bdmRemoteWait (fd, buf, BDM_REMOTE_BUF_SIZE) < 0)
return -1;
/*
* Unpack the result.
*/
s = strstr (buf, "WRITE");
if (!s) {
/* FIXME: need error message */
return -1;
}
s += sizeof "WRITE";
errno = strtoul (s, NULL, 0);
s = strchr (s, ',') + 1;
nbytes = strtoul (s, NULL, 0);
return nbytes;
}

60
m68k/lib/bdmRemote.h Normal file
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@@ -0,0 +1,60 @@
/*
* Motorola Background Debug Mode Remote Library
* Copyright (C) 1998 Chris Johns
*
* Based on `ser-tcp.c' in the gdb sources.
*
* 31-11-1999 Chris Johns (ccj@acm.org)
* Extended to support remote operation. See bdmRemote.c for details.
*
* Chris Johns
* Objective Design Systems
* 35 Cairo Street
* Cammeray, Sydney, 2062, Australia
*
* ccj@acm.org
*
* 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.
*/
#ifndef _BDM_REMOTE_LIB_H_
#define _BDM_REMOTE_LIB_H_
#if __cplusplus
extern "C"
{
#endif
#include "BDMlib.h"
/*
* Internal to the BDM library.
*/
const char *bdmRemoteStrerror (int error_no);
int bdmRemoteName (const char *name);
int bdmRemoteOpen (const char *name);
int bdmRemoteClose (int fd);
int bdmRemoteIoctlInt (int fd, int code, int *var);
int bdmRemoteIoctlCommand (int fd, int code);
int bdmRemoteIoctlIo (int fd, int code, struct BDMioctl *ioc);
int bdmRemoteRead (int fd, unsigned char *cbuf, unsigned long nbytes);
int bdmRemoteWrite (int fd, unsigned char *cbuf, unsigned long nbytes);
#if __cplusplus
}
#endif
#endif