-/* Target-dependent code for the Fujitsu SPARCLITE for GDB, the GNU debugger.
- Copyright 1994 Free Software Foundation, Inc.
+/* Target dependent code for the Fujitsu SPARClite for GDB, the GNU debugger.
+ Copyright 1994, 1995 Free Software Foundation, Inc.
This file is part of GDB.
#include "defs.h"
#include "gdbcore.h"
#include "breakpoint.h"
+#include "target.h"
+#include "serial.h"
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netdb.h>
+#include <unistd.h>
+
+extern struct target_ops sparclite_ops; /* Forward decl */
+extern struct target_ops remote_ops;
+
+static char *remote_target_name = NULL;
+static serial_t remote_desc = NULL;
+static int udp_fd = -1;
+static int serial_flag;
+
+static serial_t open_tty PARAMS ((char *name));
+static int send_resp PARAMS ((serial_t desc, char c));
+static void close_tty PARAMS ((int ignore));
+static int recv_udp_buf PARAMS ((int fd, unsigned char *buf, int len, int timeout));
+static int send_udp_buf PARAMS ((int fd, unsigned char *buf, int len));
+static void sparclite_open PARAMS ((char *name, int from_tty));
+static void sparclite_close PARAMS ((int quitting));
+static void download PARAMS ((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 PARAMS ((bfd_vma entry));
+static void sparclite_serial_write PARAMS ((bfd *from_bfd, asection *from_sec,
+ file_ptr from_addr,
+ bfd_vma to_addr, int len));
+static unsigned short calc_checksum PARAMS ((unsigned char *buffer,
+ int count));
+static void sparclite_udp_start PARAMS ((bfd_vma entry));
+static void sparclite_udp_write PARAMS ((bfd *from_bfd, asection *from_sec,
+ file_ptr from_addr, bfd_vma to_addr,
+ int len));
+static void sparclite_download PARAMS ((char *filename, int from_tty));
#define DDA2_SUP_ASI 0xb000000
#define DDA1_SUP_ASI 0xb0000
else
return 0;
}
+\f
+static serial_t
+open_tty (name)
+ char *name;
+{
+ serial_t 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;
+}
+
+static int
+send_resp (desc, c)
+ serial_t desc;
+ char c;
+{
+ int i;
+
+ SERIAL_WRITE (desc, &c, 1);
+ i = SERIAL_READCHAR (desc, 2);
+
+ if (i >= 0)
+ return i;
+
+ switch (i)
+ {
+ case SERIAL_ERROR:
+ perror_with_name ("Remote communication error");
+ case SERIAL_TIMEOUT:
+ error ("Remote timeout");
+ case SERIAL_EOF:
+ error ("Remote connection closed");
+ }
+}
+
+static void
+close_tty (ignore)
+ int ignore;
+{
+ if (!remote_desc)
+ return;
+
+ SERIAL_CLOSE (remote_desc);
+
+ remote_desc = NULL;
+}
+
+static int
+recv_udp_buf (fd, buf, len, timeout)
+ int fd, len;
+ unsigned char *buf;
+ 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 (fd, buf, len)
+ int fd, len;
+ unsigned char *buf;
+{
+ 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);
+}
+
+static void
+sparclite_open (name, from_tty)
+ 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)
+ free (remote_target_name);
+
+ remote_target_name = strsave (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);
+
+ 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
+ {
+ 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.");
+ }
+
+ printf_unfiltered ("[SPARClite appears to be alive]\n");
+
+ push_target (&sparclite_ops);
+
+ discard_cleanups (old_chain);
+
+ return;
+}
+
+static void
+sparclite_close (quitting)
+ int quitting;
+{
+ if (serial_flag)
+ close_tty (0);
+ else
+ if (udp_fd != -1)
+ close (udp_fd);
+}
+
+#define LOAD_ADDRESS 0x40000000
+
+static void
+download (target_name, args, from_tty, write_routine, start_routine)
+ char *target_name;
+ char *args;
+ int from_tty;
+ void (*write_routine)();
+ void (*start_routine)();
+{
+ 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;
+
+ 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)
+ section_address += LOAD_ADDRESS;
+
+ 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 (entry)
+ bfd_vma entry;
+{
+ char buffer[5];
+ int i;
+
+ buffer[0] = 0x03;
+ store_unsigned_integer (buffer + 1, 4, entry);
+
+ SERIAL_WRITE (remote_desc, buffer, 1 + 4);
+ i = SERIAL_READCHAR (remote_desc, 2);
+ if (i != 0x55)
+ error ("Can't start SparcLite. Error code %d\n", i);
+}
+
+static void
+sparclite_serial_write (from_bfd, from_sec, from_addr, to_addr, len)
+ 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);
+
+ SERIAL_WRITE (remote_desc, buffer, 4 + 4 + len);
+ i = SERIAL_READCHAR (remote_desc, 2);
+ if (i < 0)
+ error ("I/O error in serial code. Return code %d\n", i);
+
+ if (i != checksum)
+ error ("Bad checksum from load command (0x%x)", i);
+}
+
+static unsigned short
+calc_checksum (buffer, count)
+ 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 (entry)
+ 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 (from_bfd, from_sec, from_addr, to_addr, len)
+ 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;
+ }
+}
+
+static void
+sparclite_download (filename, from_tty)
+ char *filename;
+ int from_tty;
+{
+ if (!serial_flag)
+ download (remote_target_name, filename, from_tty, sparclite_udp_write,
+ sparclite_udp_start);
+ else
+ download (remote_target_name, filename, from_tty, sparclite_serial_write,
+ sparclite_serial_start);
+}
+\f
+/* Define the target subroutine names */
+
+static struct target_ops sparclite_ops =
+{
+ "sparclite", /* to_shortname */
+ "SPARClite remote target", /* to_longname */
+ "Use a remote SPARClite target board via a serial line, using a gdb-specific protocol.\n\
+Specify the serial device it is connected to (e.g. /dev/ttya).", /* to_doc */
+ sparclite_open, /* to_open */
+ sparclite_close, /* to_close */
+ 0, /* to_attach */
+ 0, /* to_detach */
+ 0, /* to_resume */
+ 0, /* to_wait */
+ 0, /* to_fetch_registers */
+ 0, /* to_store_registers */
+ 0, /* to_prepare_to_store */
+ 0, /* to_xfer_memory */
+ 0, /* to_files_info */
+ 0, /* to_insert_breakpoint */
+ 0, /* to_remove_breakpoint */
+ 0, /* to_terminal_init */
+ 0, /* to_terminal_inferior */
+ 0, /* to_terminal_ours_for_output */
+ 0, /* to_terminal_ours */
+ 0, /* to_terminal_info */
+ 0, /* to_kill */
+ sparclite_download, /* to_load */
+ 0, /* to_lookup_symbol */
+ 0, /* to_create_inferior */
+ 0, /* to_mourn_inferior */
+ 0, /* to_can_run */
+ 0, /* to_notice_signals */
+ 0, /* to_stop */
+ process_stratum, /* to_stratum */
+ 0, /* to_next */
+ 0, /* to_has_all_memory */
+ 0, /* to_has_memory */
+ 0, /* to_has_stack */
+ 0, /* to_has_registers */
+ 0, /* to_has_execution */
+ 0, /* sections */
+ 0, /* sections_end */
+ OPS_MAGIC /* to_magic */
+ };
+
+void
+_initialize_sparcl_tdep ()
+{
+ add_target (&sparclite_ops);
+}
projects / binutils-gdb.git / commitdiff