mirror of
https://github.com/darlinghq/darling-gdb.git
synced 2024-12-11 14:14:23 +00:00
870 lines
20 KiB
C
870 lines
20 KiB
C
/* Target dependent code for the Fujitsu SPARClite for GDB, the GNU debugger.
|
||
Copyright 1994, 1995, 1996, 1998, 1999, 2000, 2001
|
||
Free Software Foundation, Inc.
|
||
|
||
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. */
|
||
|
||
#include "defs.h"
|
||
#include "gdbcore.h"
|
||
#include "breakpoint.h"
|
||
#include "target.h"
|
||
#include "serial.h"
|
||
#include "regcache.h"
|
||
#include <sys/types.h>
|
||
|
||
#if (!defined(__GO32__) && !defined(_WIN32)) || defined(__CYGWIN32__)
|
||
#define HAVE_SOCKETS
|
||
#include <sys/time.h>
|
||
#include <sys/socket.h>
|
||
#include <netinet/in.h>
|
||
#include <netdb.h>
|
||
#endif
|
||
|
||
static struct target_ops sparclite_ops;
|
||
|
||
static char *remote_target_name = NULL;
|
||
static struct serial *remote_desc = NULL;
|
||
static int serial_flag;
|
||
#ifdef HAVE_SOCKETS
|
||
static int udp_fd = -1;
|
||
#endif
|
||
|
||
static struct serial *open_tty (char *name);
|
||
static int send_resp (struct serial *desc, char c);
|
||
static void close_tty (void * ignore);
|
||
#ifdef HAVE_SOCKETS
|
||
static int recv_udp_buf (int fd, unsigned char *buf, int len, int timeout);
|
||
static int send_udp_buf (int fd, unsigned char *buf, int len);
|
||
#endif
|
||
static void sparclite_open (char *name, int from_tty);
|
||
static void sparclite_close (int quitting);
|
||
static void download (char *target_name, char *args, int from_tty,
|
||
void (*write_routine) (bfd * from_bfd,
|
||
asection * from_sec,
|
||
file_ptr from_addr,
|
||
bfd_vma to_addr, int len),
|
||
void (*start_routine) (bfd_vma entry));
|
||
static void sparclite_serial_start (bfd_vma entry);
|
||
static void sparclite_serial_write (bfd * from_bfd, asection * from_sec,
|
||
file_ptr from_addr,
|
||
bfd_vma to_addr, int len);
|
||
#ifdef HAVE_SOCKETS
|
||
static unsigned short calc_checksum (unsigned char *buffer, int count);
|
||
static void sparclite_udp_start (bfd_vma entry);
|
||
static void sparclite_udp_write (bfd * from_bfd, asection * from_sec,
|
||
file_ptr from_addr, bfd_vma to_addr,
|
||
int len);
|
||
#endif
|
||
static void sparclite_download (char *filename, int from_tty);
|
||
|
||
#define DDA2_SUP_ASI 0xb000000
|
||
#define DDA1_SUP_ASI 0xb0000
|
||
|
||
#define DDA2_ASI_MASK 0xff000000
|
||
#define DDA1_ASI_MASK 0xff0000
|
||
#define DIA2_SUP_MODE 0x8000
|
||
#define DIA1_SUP_MODE 0x4000
|
||
#define DDA2_ENABLE 0x100
|
||
#define DDA1_ENABLE 0x80
|
||
#define DIA2_ENABLE 0x40
|
||
#define DIA1_ENABLE 0x20
|
||
#define DSINGLE_STEP 0x10 /* not used */
|
||
#define DDV_TYPE_MASK 0xc
|
||
#define DDV_TYPE_LOAD 0x0
|
||
#define DDV_TYPE_STORE 0x4
|
||
#define DDV_TYPE_ACCESS 0x8
|
||
#define DDV_TYPE_ALWAYS 0xc
|
||
#define DDV_COND 0x2
|
||
#define DDV_MASK 0x1
|
||
|
||
int
|
||
sparclite_insert_watchpoint (CORE_ADDR addr, int len, int type)
|
||
{
|
||
CORE_ADDR dcr;
|
||
|
||
dcr = read_register (DCR_REGNUM);
|
||
|
||
if (!(dcr & DDA1_ENABLE))
|
||
{
|
||
write_register (DDA1_REGNUM, addr);
|
||
dcr &= ~(DDA1_ASI_MASK | DDV_TYPE_MASK);
|
||
dcr |= (DDA1_SUP_ASI | DDA1_ENABLE);
|
||
if (type == 1)
|
||
{
|
||
write_register (DDV1_REGNUM, 0);
|
||
write_register (DDV2_REGNUM, 0xffffffff);
|
||
dcr |= (DDV_TYPE_LOAD & (~DDV_COND & ~DDV_MASK));
|
||
}
|
||
else if (type == 0)
|
||
{
|
||
write_register (DDV1_REGNUM, 0);
|
||
write_register (DDV2_REGNUM, 0xffffffff);
|
||
dcr |= (DDV_TYPE_STORE & (~DDV_COND & ~DDV_MASK));
|
||
}
|
||
else
|
||
{
|
||
write_register (DDV1_REGNUM, 0);
|
||
write_register (DDV2_REGNUM, 0xffffffff);
|
||
dcr |= (DDV_TYPE_ACCESS);
|
||
}
|
||
write_register (DCR_REGNUM, dcr);
|
||
}
|
||
else if (!(dcr & DDA2_ENABLE))
|
||
{
|
||
write_register (DDA2_REGNUM, addr);
|
||
dcr &= ~(DDA2_ASI_MASK & DDV_TYPE_MASK);
|
||
dcr |= (DDA2_SUP_ASI | DDA2_ENABLE);
|
||
if (type == 1)
|
||
{
|
||
write_register (DDV1_REGNUM, 0);
|
||
write_register (DDV2_REGNUM, 0xffffffff);
|
||
dcr |= (DDV_TYPE_LOAD & ~DDV_COND & ~DDV_MASK);
|
||
}
|
||
else if (type == 0)
|
||
{
|
||
write_register (DDV1_REGNUM, 0);
|
||
write_register (DDV2_REGNUM, 0xffffffff);
|
||
dcr |= (DDV_TYPE_STORE & ~DDV_COND & ~DDV_MASK);
|
||
}
|
||
else
|
||
{
|
||
write_register (DDV1_REGNUM, 0);
|
||
write_register (DDV2_REGNUM, 0xffffffff);
|
||
dcr |= (DDV_TYPE_ACCESS);
|
||
}
|
||
write_register (DCR_REGNUM, dcr);
|
||
}
|
||
else
|
||
return -1;
|
||
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
sparclite_remove_watchpoint (CORE_ADDR addr, int len, int type)
|
||
{
|
||
CORE_ADDR dcr, dda1, dda2;
|
||
|
||
dcr = read_register (DCR_REGNUM);
|
||
dda1 = read_register (DDA1_REGNUM);
|
||
dda2 = read_register (DDA2_REGNUM);
|
||
|
||
if ((dcr & DDA1_ENABLE) && addr == dda1)
|
||
write_register (DCR_REGNUM, (dcr & ~DDA1_ENABLE));
|
||
else if ((dcr & DDA2_ENABLE) && addr == dda2)
|
||
write_register (DCR_REGNUM, (dcr & ~DDA2_ENABLE));
|
||
else
|
||
return -1;
|
||
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
sparclite_insert_hw_breakpoint (CORE_ADDR addr, int len)
|
||
{
|
||
CORE_ADDR dcr;
|
||
|
||
dcr = read_register (DCR_REGNUM);
|
||
|
||
if (!(dcr & DIA1_ENABLE))
|
||
{
|
||
write_register (DIA1_REGNUM, addr);
|
||
write_register (DCR_REGNUM, (dcr | DIA1_ENABLE | DIA1_SUP_MODE));
|
||
}
|
||
else if (!(dcr & DIA2_ENABLE))
|
||
{
|
||
write_register (DIA2_REGNUM, addr);
|
||
write_register (DCR_REGNUM, (dcr | DIA2_ENABLE | DIA2_SUP_MODE));
|
||
}
|
||
else
|
||
return -1;
|
||
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
sparclite_remove_hw_breakpoint (CORE_ADDR addr, int shadow)
|
||
{
|
||
CORE_ADDR dcr, dia1, dia2;
|
||
|
||
dcr = read_register (DCR_REGNUM);
|
||
dia1 = read_register (DIA1_REGNUM);
|
||
dia2 = read_register (DIA2_REGNUM);
|
||
|
||
if ((dcr & DIA1_ENABLE) && addr == dia1)
|
||
write_register (DCR_REGNUM, (dcr & ~DIA1_ENABLE));
|
||
else if ((dcr & DIA2_ENABLE) && addr == dia2)
|
||
write_register (DCR_REGNUM, (dcr & ~DIA2_ENABLE));
|
||
else
|
||
return -1;
|
||
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
sparclite_check_watch_resources (int type, int cnt, int ot)
|
||
{
|
||
/* Watchpoints not supported on simulator. */
|
||
if (strcmp (target_shortname, "sim") == 0)
|
||
return 0;
|
||
|
||
if (type == bp_hardware_breakpoint)
|
||
{
|
||
if (TARGET_HW_BREAK_LIMIT == 0)
|
||
return 0;
|
||
else if (cnt <= TARGET_HW_BREAK_LIMIT)
|
||
return 1;
|
||
}
|
||
else
|
||
{
|
||
if (TARGET_HW_WATCH_LIMIT == 0)
|
||
return 0;
|
||
else if (ot)
|
||
return -1;
|
||
else if (cnt <= TARGET_HW_WATCH_LIMIT)
|
||
return 1;
|
||
}
|
||
return -1;
|
||
}
|
||
|
||
CORE_ADDR
|
||
sparclite_stopped_data_address (void)
|
||
{
|
||
CORE_ADDR dsr, dda1, dda2;
|
||
|
||
dsr = read_register (DSR_REGNUM);
|
||
dda1 = read_register (DDA1_REGNUM);
|
||
dda2 = read_register (DDA2_REGNUM);
|
||
|
||
if (dsr & 0x10)
|
||
return dda1;
|
||
else if (dsr & 0x20)
|
||
return dda2;
|
||
else
|
||
return 0;
|
||
}
|
||
|
||
static struct serial *
|
||
open_tty (char *name)
|
||
{
|
||
struct serial *desc;
|
||
|
||
desc = serial_open (name);
|
||
if (!desc)
|
||
perror_with_name (name);
|
||
|
||
if (baud_rate != -1)
|
||
{
|
||
if (serial_setbaudrate (desc, baud_rate))
|
||
{
|
||
serial_close (desc);
|
||
perror_with_name (name);
|
||
}
|
||
}
|
||
|
||
serial_raw (desc);
|
||
|
||
serial_flush_input (desc);
|
||
|
||
return desc;
|
||
}
|
||
|
||
/* Read a single character from the remote end, masking it down to 7 bits. */
|
||
|
||
static int
|
||
readchar (struct serial *desc, int timeout)
|
||
{
|
||
int ch;
|
||
char s[10];
|
||
|
||
ch = serial_readchar (desc, timeout);
|
||
|
||
switch (ch)
|
||
{
|
||
case SERIAL_EOF:
|
||
error ("SPARClite remote connection closed");
|
||
case SERIAL_ERROR:
|
||
perror_with_name ("SPARClite communication error");
|
||
case SERIAL_TIMEOUT:
|
||
error ("SPARClite remote timeout");
|
||
default:
|
||
if (remote_debug > 0)
|
||
{
|
||
sprintf (s, "[%02x]", ch & 0xff);
|
||
puts_debug ("read -->", s, "<--");
|
||
}
|
||
return ch;
|
||
}
|
||
}
|
||
|
||
static void
|
||
debug_serial_write (struct serial *desc, char *buf, int len)
|
||
{
|
||
char s[10];
|
||
|
||
serial_write (desc, buf, len);
|
||
if (remote_debug > 0)
|
||
{
|
||
while (len-- > 0)
|
||
{
|
||
sprintf (s, "[%02x]", *buf & 0xff);
|
||
puts_debug ("Sent -->", s, "<--");
|
||
buf++;
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
static int
|
||
send_resp (struct serial *desc, char c)
|
||
{
|
||
debug_serial_write (desc, &c, 1);
|
||
return readchar (desc, remote_timeout);
|
||
}
|
||
|
||
static void
|
||
close_tty (void *ignore)
|
||
{
|
||
if (!remote_desc)
|
||
return;
|
||
|
||
serial_close (remote_desc);
|
||
|
||
remote_desc = NULL;
|
||
}
|
||
|
||
#ifdef HAVE_SOCKETS
|
||
static int
|
||
recv_udp_buf (int fd, unsigned char *buf, int len, int timeout)
|
||
{
|
||
int cc;
|
||
fd_set readfds;
|
||
|
||
FD_ZERO (&readfds);
|
||
FD_SET (fd, &readfds);
|
||
|
||
if (timeout >= 0)
|
||
{
|
||
struct timeval timebuf;
|
||
|
||
timebuf.tv_sec = timeout;
|
||
timebuf.tv_usec = 0;
|
||
cc = select (fd + 1, &readfds, 0, 0, &timebuf);
|
||
}
|
||
else
|
||
cc = select (fd + 1, &readfds, 0, 0, 0);
|
||
|
||
if (cc == 0)
|
||
return 0;
|
||
|
||
if (cc != 1)
|
||
perror_with_name ("recv_udp_buf: Bad return value from select:");
|
||
|
||
cc = recv (fd, buf, len, 0);
|
||
|
||
if (cc < 0)
|
||
perror_with_name ("Got an error from recv: ");
|
||
}
|
||
|
||
static int
|
||
send_udp_buf (int fd, unsigned char *buf, int len)
|
||
{
|
||
int cc;
|
||
|
||
cc = send (fd, buf, len, 0);
|
||
|
||
if (cc == len)
|
||
return;
|
||
|
||
if (cc < 0)
|
||
perror_with_name ("Got an error from send: ");
|
||
|
||
error ("Short count in send: tried %d, sent %d\n", len, cc);
|
||
}
|
||
#endif /* HAVE_SOCKETS */
|
||
|
||
static void
|
||
sparclite_open (char *name, int from_tty)
|
||
{
|
||
struct cleanup *old_chain;
|
||
int c;
|
||
char *p;
|
||
|
||
if (!name)
|
||
error ("You need to specify what device or hostname is associated with the SparcLite board.");
|
||
|
||
target_preopen (from_tty);
|
||
|
||
unpush_target (&sparclite_ops);
|
||
|
||
if (remote_target_name)
|
||
xfree (remote_target_name);
|
||
|
||
remote_target_name = xstrdup (name);
|
||
|
||
/* We need a 'serial' or 'udp' keyword to disambiguate host:port, which can
|
||
mean either a serial port on a terminal server, or the IP address of a
|
||
SPARClite demo board. If there's no colon, then it pretty much has to be
|
||
a local device (except for DOS... grrmble) */
|
||
|
||
p = strchr (name, ' ');
|
||
|
||
if (p)
|
||
{
|
||
*p++ = '\000';
|
||
while ((*p != '\000') && isspace (*p))
|
||
p++;
|
||
|
||
if (strncmp (name, "serial", strlen (name)) == 0)
|
||
serial_flag = 1;
|
||
else if (strncmp (name, "udp", strlen (name)) == 0)
|
||
serial_flag = 0;
|
||
else
|
||
error ("Must specify either `serial' or `udp'.");
|
||
}
|
||
else
|
||
{
|
||
p = name;
|
||
|
||
if (!strchr (name, ':'))
|
||
serial_flag = 1; /* No colon is unambiguous (local device) */
|
||
else
|
||
error ("Usage: target sparclite serial /dev/ttyb\n\
|
||
or: target sparclite udp host");
|
||
}
|
||
|
||
if (serial_flag)
|
||
{
|
||
remote_desc = open_tty (p);
|
||
|
||
old_chain = make_cleanup (close_tty, 0 /*ignore*/);
|
||
|
||
c = send_resp (remote_desc, 0x00);
|
||
|
||
if (c != 0xaa)
|
||
error ("Unknown response (0x%x) from SparcLite. Try resetting the board.",
|
||
c);
|
||
|
||
c = send_resp (remote_desc, 0x55);
|
||
|
||
if (c != 0x55)
|
||
error ("Sparclite appears to be ill.");
|
||
}
|
||
else
|
||
{
|
||
#ifdef HAVE_SOCKETS
|
||
struct hostent *he;
|
||
struct sockaddr_in sockaddr;
|
||
unsigned char buffer[100];
|
||
int cc;
|
||
|
||
/* Setup the socket. Must be raw UDP. */
|
||
|
||
he = gethostbyname (p);
|
||
|
||
if (!he)
|
||
error ("No such host %s.", p);
|
||
|
||
udp_fd = socket (PF_INET, SOCK_DGRAM, 0);
|
||
|
||
old_chain = make_cleanup (close, udp_fd);
|
||
|
||
sockaddr.sin_family = PF_INET;
|
||
sockaddr.sin_port = htons (7000);
|
||
memcpy (&sockaddr.sin_addr.s_addr, he->h_addr, sizeof (struct in_addr));
|
||
|
||
if (connect (udp_fd, &sockaddr, sizeof (sockaddr)))
|
||
perror_with_name ("Connect failed");
|
||
|
||
buffer[0] = 0x5;
|
||
buffer[1] = 0;
|
||
|
||
send_udp_buf (udp_fd, buffer, 2); /* Request version */
|
||
cc = recv_udp_buf (udp_fd, buffer, sizeof (buffer), 5); /* Get response */
|
||
if (cc == 0)
|
||
error ("SPARClite isn't responding.");
|
||
|
||
if (cc < 3)
|
||
error ("SPARClite appears to be ill.");
|
||
#else
|
||
error ("UDP downloading is not supported for DOS hosts.");
|
||
#endif /* HAVE_SOCKETS */
|
||
}
|
||
|
||
printf_unfiltered ("[SPARClite appears to be alive]\n");
|
||
|
||
push_target (&sparclite_ops);
|
||
|
||
discard_cleanups (old_chain);
|
||
|
||
return;
|
||
}
|
||
|
||
static void
|
||
sparclite_close (int quitting)
|
||
{
|
||
if (serial_flag)
|
||
close_tty (0);
|
||
#ifdef HAVE_SOCKETS
|
||
else if (udp_fd != -1)
|
||
close (udp_fd);
|
||
#endif
|
||
}
|
||
|
||
#define LOAD_ADDRESS 0x40000000
|
||
|
||
static void
|
||
download (char *target_name, char *args, int from_tty,
|
||
void (*write_routine) (bfd *from_bfd, asection *from_sec,
|
||
file_ptr from_addr, bfd_vma to_addr, int len),
|
||
void (*start_routine) (bfd_vma entry))
|
||
{
|
||
struct cleanup *old_chain;
|
||
asection *section;
|
||
bfd *pbfd;
|
||
bfd_vma entry;
|
||
int i;
|
||
#define WRITESIZE 1024
|
||
char *filename;
|
||
int quiet;
|
||
int nostart;
|
||
|
||
quiet = 0;
|
||
nostart = 0;
|
||
filename = NULL;
|
||
|
||
while (*args != '\000')
|
||
{
|
||
char *arg;
|
||
|
||
while (isspace (*args))
|
||
args++;
|
||
|
||
arg = args;
|
||
|
||
while ((*args != '\000') && !isspace (*args))
|
||
args++;
|
||
|
||
if (*args != '\000')
|
||
*args++ = '\000';
|
||
|
||
if (*arg != '-')
|
||
filename = arg;
|
||
else if (strncmp (arg, "-quiet", strlen (arg)) == 0)
|
||
quiet = 1;
|
||
else if (strncmp (arg, "-nostart", strlen (arg)) == 0)
|
||
nostart = 1;
|
||
else
|
||
error ("unknown option `%s'", arg);
|
||
}
|
||
|
||
if (!filename)
|
||
filename = get_exec_file (1);
|
||
|
||
pbfd = bfd_openr (filename, gnutarget);
|
||
if (pbfd == NULL)
|
||
{
|
||
perror_with_name (filename);
|
||
return;
|
||
}
|
||
old_chain = make_cleanup_bfd_close (pbfd);
|
||
|
||
if (!bfd_check_format (pbfd, bfd_object))
|
||
error ("\"%s\" is not an object file: %s", filename,
|
||
bfd_errmsg (bfd_get_error ()));
|
||
|
||
for (section = pbfd->sections; section; section = section->next)
|
||
{
|
||
if (bfd_get_section_flags (pbfd, section) & SEC_LOAD)
|
||
{
|
||
bfd_vma section_address;
|
||
bfd_size_type section_size;
|
||
file_ptr fptr;
|
||
const char *section_name;
|
||
|
||
section_name = bfd_get_section_name (pbfd, section);
|
||
|
||
section_address = bfd_get_section_vma (pbfd, section);
|
||
|
||
/* Adjust sections from a.out files, since they don't
|
||
carry their addresses with. */
|
||
if (bfd_get_flavour (pbfd) == bfd_target_aout_flavour)
|
||
{
|
||
if (strcmp (section_name, ".text") == 0)
|
||
section_address = bfd_get_start_address (pbfd);
|
||
else if (strcmp (section_name, ".data") == 0)
|
||
{
|
||
/* Read the first 8 bytes of the data section.
|
||
There should be the string 'DaTa' followed by
|
||
a word containing the actual section address. */
|
||
struct data_marker
|
||
{
|
||
char signature[4]; /* 'DaTa' */
|
||
unsigned char sdata[4]; /* &sdata */
|
||
}
|
||
marker;
|
||
bfd_get_section_contents (pbfd, section, &marker, 0,
|
||
sizeof (marker));
|
||
if (strncmp (marker.signature, "DaTa", 4) == 0)
|
||
{
|
||
if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
|
||
section_address = bfd_getb32 (marker.sdata);
|
||
else
|
||
section_address = bfd_getl32 (marker.sdata);
|
||
}
|
||
}
|
||
}
|
||
|
||
section_size = bfd_get_section_size_before_reloc (section);
|
||
|
||
if (!quiet)
|
||
printf_filtered ("[Loading section %s at 0x%x (%d bytes)]\n",
|
||
bfd_get_section_name (pbfd, section),
|
||
section_address,
|
||
section_size);
|
||
|
||
fptr = 0;
|
||
while (section_size > 0)
|
||
{
|
||
int count;
|
||
static char inds[] = "|/-\\";
|
||
static int k = 0;
|
||
|
||
QUIT;
|
||
|
||
count = min (section_size, WRITESIZE);
|
||
|
||
write_routine (pbfd, section, fptr, section_address, count);
|
||
|
||
if (!quiet)
|
||
{
|
||
printf_unfiltered ("\r%c", inds[k++ % 4]);
|
||
gdb_flush (gdb_stdout);
|
||
}
|
||
|
||
section_address += count;
|
||
fptr += count;
|
||
section_size -= count;
|
||
}
|
||
}
|
||
}
|
||
|
||
if (!nostart)
|
||
{
|
||
entry = bfd_get_start_address (pbfd);
|
||
|
||
if (!quiet)
|
||
printf_unfiltered ("[Starting %s at 0x%x]\n", filename, entry);
|
||
|
||
start_routine (entry);
|
||
}
|
||
|
||
do_cleanups (old_chain);
|
||
}
|
||
|
||
static void
|
||
sparclite_serial_start (bfd_vma entry)
|
||
{
|
||
char buffer[5];
|
||
int i;
|
||
|
||
buffer[0] = 0x03;
|
||
store_unsigned_integer (buffer + 1, 4, entry);
|
||
|
||
debug_serial_write (remote_desc, buffer, 1 + 4);
|
||
i = readchar (remote_desc, remote_timeout);
|
||
if (i != 0x55)
|
||
error ("Can't start SparcLite. Error code %d\n", i);
|
||
}
|
||
|
||
static void
|
||
sparclite_serial_write (bfd *from_bfd, asection *from_sec, file_ptr from_addr,
|
||
bfd_vma to_addr, int len)
|
||
{
|
||
char buffer[4 + 4 + WRITESIZE]; /* addr + len + data */
|
||
unsigned char checksum;
|
||
int i;
|
||
|
||
store_unsigned_integer (buffer, 4, to_addr); /* Address */
|
||
store_unsigned_integer (buffer + 4, 4, len); /* Length */
|
||
|
||
bfd_get_section_contents (from_bfd, from_sec, buffer + 8, from_addr, len);
|
||
|
||
checksum = 0;
|
||
for (i = 0; i < len; i++)
|
||
checksum += buffer[8 + i];
|
||
|
||
i = send_resp (remote_desc, 0x01);
|
||
|
||
if (i != 0x5a)
|
||
error ("Bad response from load command (0x%x)", i);
|
||
|
||
debug_serial_write (remote_desc, buffer, 4 + 4 + len);
|
||
i = readchar (remote_desc, remote_timeout);
|
||
|
||
if (i != checksum)
|
||
error ("Bad checksum from load command (0x%x)", i);
|
||
}
|
||
|
||
#ifdef HAVE_SOCKETS
|
||
|
||
static unsigned short
|
||
calc_checksum (unsigned char *buffer, int count)
|
||
{
|
||
unsigned short checksum;
|
||
|
||
checksum = 0;
|
||
for (; count > 0; count -= 2, buffer += 2)
|
||
checksum += (*buffer << 8) | *(buffer + 1);
|
||
|
||
if (count != 0)
|
||
checksum += *buffer << 8;
|
||
|
||
return checksum;
|
||
}
|
||
|
||
static void
|
||
sparclite_udp_start (bfd_vma entry)
|
||
{
|
||
unsigned char buffer[6];
|
||
int i;
|
||
|
||
buffer[0] = 0x3;
|
||
buffer[1] = 0;
|
||
buffer[2] = entry >> 24;
|
||
buffer[3] = entry >> 16;
|
||
buffer[4] = entry >> 8;
|
||
buffer[5] = entry;
|
||
|
||
send_udp_buf (udp_fd, buffer, 6); /* Send start addr */
|
||
i = recv_udp_buf (udp_fd, buffer, sizeof (buffer), -1); /* Get response */
|
||
|
||
if (i < 1 || buffer[0] != 0x55)
|
||
error ("Failed to take start address.");
|
||
}
|
||
|
||
static void
|
||
sparclite_udp_write (bfd *from_bfd, asection *from_sec, file_ptr from_addr,
|
||
bfd_vma to_addr, int len)
|
||
{
|
||
unsigned char buffer[2000];
|
||
unsigned short checksum;
|
||
static int pkt_num = 0;
|
||
static unsigned long old_addr = -1;
|
||
int i;
|
||
|
||
while (1)
|
||
{
|
||
if (to_addr != old_addr)
|
||
{
|
||
buffer[0] = 0x1; /* Load command */
|
||
buffer[1] = 0x1; /* Loading address */
|
||
buffer[2] = to_addr >> 24;
|
||
buffer[3] = to_addr >> 16;
|
||
buffer[4] = to_addr >> 8;
|
||
buffer[5] = to_addr;
|
||
|
||
checksum = 0;
|
||
for (i = 0; i < 6; i++)
|
||
checksum += buffer[i];
|
||
checksum &= 0xff;
|
||
|
||
send_udp_buf (udp_fd, buffer, 6);
|
||
i = recv_udp_buf (udp_fd, buffer, sizeof buffer, -1);
|
||
|
||
if (i < 1)
|
||
error ("Got back short checksum for load addr.");
|
||
|
||
if (checksum != buffer[0])
|
||
error ("Got back bad checksum for load addr.");
|
||
|
||
pkt_num = 0; /* Load addr resets packet seq # */
|
||
old_addr = to_addr;
|
||
}
|
||
|
||
bfd_get_section_contents (from_bfd, from_sec, buffer + 6, from_addr,
|
||
len);
|
||
|
||
checksum = calc_checksum (buffer + 6, len);
|
||
|
||
buffer[0] = 0x1; /* Load command */
|
||
buffer[1] = 0x2; /* Loading data */
|
||
buffer[2] = pkt_num >> 8;
|
||
buffer[3] = pkt_num;
|
||
buffer[4] = checksum >> 8;
|
||
buffer[5] = checksum;
|
||
|
||
send_udp_buf (udp_fd, buffer, len + 6);
|
||
i = recv_udp_buf (udp_fd, buffer, sizeof buffer, 3);
|
||
|
||
if (i == 0)
|
||
{
|
||
fprintf_unfiltered (gdb_stderr, "send_data: timeout sending %d bytes to address 0x%x retrying\n", len, to_addr);
|
||
continue;
|
||
}
|
||
|
||
if (buffer[0] != 0xff)
|
||
error ("Got back bad response for load data.");
|
||
|
||
old_addr += len;
|
||
pkt_num++;
|
||
|
||
return;
|
||
}
|
||
}
|
||
|
||
#endif /* HAVE_SOCKETS */
|
||
|
||
static void
|
||
sparclite_download (char *filename, int from_tty)
|
||
{
|
||
if (!serial_flag)
|
||
#ifdef HAVE_SOCKETS
|
||
download (remote_target_name, filename, from_tty, sparclite_udp_write,
|
||
sparclite_udp_start);
|
||
#else
|
||
internal_error (__FILE__, __LINE__, "failed internal consistency check"); /* sparclite_open should prevent this! */
|
||
#endif
|
||
else
|
||
download (remote_target_name, filename, from_tty, sparclite_serial_write,
|
||
sparclite_serial_start);
|
||
}
|
||
|
||
/* Set up the sparclite target vector. */
|
||
|
||
static void
|
||
init_sparclite_ops (void)
|
||
{
|
||
sparclite_ops.to_shortname = "sparclite";
|
||
sparclite_ops.to_longname = "SPARClite download target";
|
||
sparclite_ops.to_doc = "Download to a remote SPARClite target board via serial of UDP.\n\
|
||
Specify the device it is connected to (e.g. /dev/ttya).";
|
||
sparclite_ops.to_open = sparclite_open;
|
||
sparclite_ops.to_close = sparclite_close;
|
||
sparclite_ops.to_load = sparclite_download;
|
||
sparclite_ops.to_stratum = download_stratum;
|
||
sparclite_ops.to_magic = OPS_MAGIC;
|
||
}
|
||
|
||
void
|
||
_initialize_sparcl_tdep (void)
|
||
{
|
||
init_sparclite_ops ();
|
||
add_target (&sparclite_ops);
|
||
}
|