/* Memory-access and commands for remote NINDY process, for GDB.
- Copyright (C) 1990-1991 Free Software Foundation, Inc.
+ Copyright 1990, 1991, 1992, 1993, 2001 Free Software Foundation, Inc.
Contributed by Intel Corporation. Modified from remote.c by Chris Benenati.
-GDB is distributed in the hope that it will be useful, but WITHOUT ANY
-WARRANTY. No author or distributor accepts responsibility to anyone
-for the consequences of using it or for whether it serves any
-particular purpose or works at all, unless he says so in writing.
-Refer to the GDB General Public License for full details.
-
-Everyone is granted permission to copy, modify and redistribute GDB,
-but only under the conditions described in the GDB General Public
-License. A copy of this license is supposed to have been given to you
-along with GDB so you can know your rights and responsibilities. It
-should be in a file named COPYING. Among other things, the copyright
-notice and this notice must be preserved on all copies.
-
-In other words, go ahead and share GDB, but don't try to stop
-anyone else from sharing it farther. Help stamp out software hoarding!
-*/
+ GDB is distributed in the hope that it will be useful, but WITHOUT ANY
+ WARRANTY. No author or distributor accepts responsibility to anyone
+ for the consequences of using it or for whether it serves any
+ particular purpose or works at all, unless he says so in writing.
+ Refer to the GDB General Public License for full details.
+
+ Everyone is granted permission to copy, modify and redistribute GDB,
+ but only under the conditions described in the GDB General Public
+ License. A copy of this license is supposed to have been given to you
+ along with GDB so you can know your rights and responsibilities. It
+ should be in a file named COPYING. Among other things, the copyright
+ notice and this notice must be preserved on all copies.
+
+ In other words, go ahead and share GDB, but don't try to stop
+ anyone else from sharing it farther. Help stamp out software hoarding!
+ */
/*
-Except for the data cache routines, this file bears little resemblence
-to remote.c. A new (although similar) protocol has been specified, and
-portions of the code are entirely dependent on having an i80960 with a
-NINDY ROM monitor at the other end of the line.
-*/
+ Except for the data cache routines, this file bears little resemblence
+ to remote.c. A new (although similar) protocol has been specified, and
+ portions of the code are entirely dependent on having an i80960 with a
+ NINDY ROM monitor at the other end of the line.
+ */
/*****************************************************************************
*
* SEE THE FILE "stop.h" IN THE NINDY MONITOR SOURCE CODE FOR A LIST
* OF STOP CODES.
*
- ******************************************************************************/
+ ***************************************************************************/
-#include <stdio.h>
+#include "defs.h"
#include <signal.h>
#include <sys/types.h>
#include <setjmp.h>
-#include "defs.h"
-#include "param.h"
#include "frame.h"
#include "inferior.h"
+#include "bfd.h"
+#include "symfile.h"
#include "target.h"
#include "gdbcore.h"
#include "command.h"
-#include "bfd.h"
-#include "ieee-float.h"
+#include "floatformat.h"
-#include "wait.h"
-#include <sys/ioctl.h>
#include <sys/file.h>
#include <ctype.h>
-#include "nindy-share/ttycntl.h"
-#include "nindy-share/demux.h"
+#include "serial.h"
#include "nindy-share/env.h"
#include "nindy-share/stop.h"
+#include "remote-utils.h"
-extern int unlink();
-extern char *getenv();
-extern char *mktemp();
+extern int unlink ();
+extern char *getenv ();
+extern char *mktemp ();
-extern char *coffstrip();
-extern void add_syms_addr_command ();
-extern value call_function_by_hand ();
extern void generic_mourn_inferior ();
extern struct target_ops nindy_ops;
-extern jmp_buf to_top_level;
extern FILE *instream;
-extern struct ext_format ext_format_i960[]; /* i960-tdep.c */
extern char ninStopWhy ();
+extern int ninMemGet ();
+extern int ninMemPut ();
-int nindy_initial_brk; /* nonzero if want to send an initial BREAK to nindy */
-int nindy_old_protocol; /* nonzero if want to use old protocol */
-char *nindy_ttyname; /* name of tty to talk to nindy on, or null */
+int nindy_initial_brk; /* nonzero if want to send an initial BREAK to nindy */
+int nindy_old_protocol; /* nonzero if want to use old protocol */
+char *nindy_ttyname; /* name of tty to talk to nindy on, or null */
-#define DLE '\020' /* Character NINDY sends to indicate user program has
- * halted. */
+#define DLE '\020' /* Character NINDY sends to indicate user program has
+ * halted. */
#define TRUE 1
#define FALSE 0
-int nindy_fd = 0; /* Descriptor for I/O to NINDY */
+/* From nindy-share/nindy.c. */
+extern serial_t nindy_serial;
+
static int have_regs = 0; /* 1 iff regs read since i960 last halted */
static int regs_changed = 0; /* 1 iff regs were modified since last read */
-extern char *exists();
-static void dcache_flush (), dcache_poke (), dcache_init();
-static int dcache_fetch ();
-\f
-/* FIXME, we can probably use the normal terminal_inferior stuff here.
- We have to do terminal_inferior and then set up the passthrough
- settings initially. Thereafter, terminal_ours and terminal_inferior
- will automatically swap the settings around for us. */
-
-/* Restore TTY to normal operation */
+extern char *exists ();
-static TTY_STRUCT orig_tty; /* TTY attributes before entering passthrough */
+static void nindy_fetch_registers (int);
-static void
-restore_tty()
-{
- ioctl( 0, TIOCSETN, &orig_tty );
-}
-
-
-/* Recover from ^Z or ^C while remote process is running */
-
-static void (*old_ctrlc)(); /* Signal handlers before entering passthrough */
-
-#ifdef SIGTSTP
-static void (*old_ctrlz)();
-#endif
-
-static
-#ifdef USG
-void
-#endif
-cleanup()
-{
- restore_tty();
- signal(SIGINT, old_ctrlc);
-#ifdef SIGTSTP
- signal(SIGTSTP, old_ctrlz);
-#endif
- error("\n\nYou may need to reset the 80960 and/or reload your program.\n");
-}
+static void nindy_store_registers (int);
\f
-/* Clean up anything that needs cleaning when losing control. */
-
static char *savename;
static void
-nindy_close (quitting)
- int quitting;
+nindy_close (int quitting)
{
- if (nindy_fd)
- close (nindy_fd);
- nindy_fd = 0;
+ if (nindy_serial != NULL)
+ SERIAL_CLOSE (nindy_serial);
+ nindy_serial = NULL;
if (savename)
- free (savename);
+ xfree (savename);
savename = 0;
}
/* Open a connection to a remote debugger.
- FIXME, there should be a way to specify the various options that are
- now specified with gdb command-line options. (baud_rate, old_protocol,
- and initial_brk) */
+ FIXME, there should be "set" commands for the options that are
+ now specified with gdb command-line options (old_protocol,
+ and initial_brk). */
void
-nindy_open (name, from_tty)
- char *name; /* "/dev/ttyXX", "ttyXX", or "XX": tty to be opened */
- int from_tty;
+nindy_open (char *name, /* "/dev/ttyXX", "ttyXX", or "XX": tty to be opened */
+ int from_tty)
{
+ char baudrate[1024];
if (!name)
error_no_arg ("serial port device name");
+ target_preopen (from_tty);
+
nindy_close (0);
- have_regs = regs_changed = 0;
- dcache_init();
+ have_regs = regs_changed = 0;
- /* Allow user to interrupt the following -- we could hang if
- * there's no NINDY at the other end of the remote tty.
- */
- immediate_quit++;
- nindy_fd = ninConnect( name, baud_rate? baud_rate: "9600",
- nindy_initial_brk, !from_tty, nindy_old_protocol );
- immediate_quit--;
+ /* Allow user to interrupt the following -- we could hang if there's
+ no NINDY at the other end of the remote tty. */
+ immediate_quit++;
+ /* If baud_rate is -1, then ninConnect will not recognize the baud rate
+ and will deal with the situation in a (more or less) reasonable
+ fashion. */
+ sprintf (baudrate, "%d", baud_rate);
+ ninConnect (name, baudrate,
+ nindy_initial_brk, !from_tty, nindy_old_protocol);
+ immediate_quit--;
- if ( nindy_fd < 0 ){
- nindy_fd = 0;
- error( "Can't open tty '%s'", name );
- }
+ if (nindy_serial == NULL)
+ {
+ perror_with_name (name);
+ }
+
+ savename = savestring (name, strlen (name));
+ push_target (&nindy_ops);
+
+ target_fetch_registers (-1);
- savename = savestring (name, strlen (name));
- push_target (&nindy_ops);
- target_fetch_registers(-1);
+ init_thread_list ();
+ init_wait_for_inferior ();
+ clear_proceed_status ();
+ normal_stop ();
}
/* User-initiated quit of nindy operations. */
static void
-nindy_detach (name, from_tty)
- char *name;
- int from_tty;
+nindy_detach (char *name, int from_tty)
{
- dont_repeat ();
if (name)
error ("Too many arguments");
pop_target ();
}
static void
-nindy_files_info ()
+nindy_files_info (void)
{
- printf("\tAttached to %s at %s bps%s%s.\n", savename,
- baud_rate? baud_rate: "9600",
- nindy_old_protocol? " in old protocol": "",
- nindy_initial_brk? " with initial break": "");
+ /* FIXME: this lies about the baud rate if we autobauded. */
+ printf_unfiltered ("\tAttached to %s at %d bits per second%s%s.\n", savename,
+ baud_rate,
+ nindy_old_protocol ? " in old protocol" : "",
+ nindy_initial_brk ? " with initial break" : "");
}
\f
-/******************************************************************************
- * remote_load:
- * Download an object file to the remote system by invoking the "comm960"
- * utility. We look for "comm960" in $G960BIN, $G960BASE/bin, and
- * DEFAULT_BASE/bin/HOST/bin where
- * DEFAULT_BASE is defined in env.h, and
- * HOST must be defined on the compiler invocation line.
- ******************************************************************************/
-
-static void
-nindy_load( filename, from_tty )
- char *filename;
- int from_tty;
-{
- char *tmpfile;
- struct cleanup *old_chain;
- char *scratch_pathname;
- int scratch_chan;
-
- if (!filename)
- filename = get_exec_file (1);
-
- filename = tilde_expand (filename);
- make_cleanup (free, filename);
-
- scratch_chan = openp (getenv ("PATH"), 1, filename, O_RDONLY, 0,
- &scratch_pathname);
- if (scratch_chan < 0)
- perror_with_name (filename);
- close (scratch_chan); /* Slightly wasteful FIXME */
-
- have_regs = regs_changed = 0;
- mark_breakpoints_out();
- inferior_pid = 0;
- dcache_flush();
-
- tmpfile = coffstrip(scratch_pathname);
- if ( tmpfile ){
- old_chain = make_cleanup(unlink,tmpfile);
- immediate_quit++;
- ninDownload( tmpfile, !from_tty );
-/* FIXME, don't we want this merged in here? */
- immediate_quit--;
- do_cleanups (old_chain);
- }
-}
-
-
-
-/* Return the number of characters in the buffer before the first DLE character.
- */
+/* Return the number of characters in the buffer BUF before
+ the first DLE character. N is maximum number of characters to
+ consider. */
static
int
-non_dle( buf, n )
- char *buf; /* Character buffer; NOT '\0'-terminated */
- int n; /* Number of characters in buffer */
+non_dle (char *buf, int n)
{
- int i;
+ int i;
- for ( i = 0; i < n; i++ ){
- if ( buf[i] == DLE ){
- break;
- }
+ for (i = 0; i < n; i++)
+ {
+ if (buf[i] == DLE)
+ {
+ break;
}
- return i;
+ }
+ return i;
}
\f
/* Tell the remote machine to resume. */
void
-nindy_resume (step, siggnal)
- int step, siggnal;
+nindy_resume (int pid, int step, enum target_signal siggnal)
{
- if (siggnal != 0 && siggnal != stop_signal)
- error ("Can't send signals to remote NINDY targets.");
+ if (siggnal != TARGET_SIGNAL_0 && siggnal != stop_signal)
+ warning ("Can't send signals to remote NINDY targets.");
- dcache_flush();
- if ( regs_changed ){
- nindy_store_registers ();
- regs_changed = 0;
- }
- have_regs = 0;
- ninGo( step );
+ if (regs_changed)
+ {
+ nindy_store_registers (-1);
+ regs_changed = 0;
+ }
+ have_regs = 0;
+ ninGo (step);
}
+\f
+/* FIXME, we can probably use the normal terminal_inferior stuff here.
+ We have to do terminal_inferior and then set up the passthrough
+ settings initially. Thereafter, terminal_ours and terminal_inferior
+ will automatically swap the settings around for us. */
-/* Wait until the remote machine stops. While waiting, operate in passthrough
- * mode; i.e., pass everything NINDY sends to stdout, and everything from
- * stdin to NINDY.
- *
- * Return to caller, storing status in 'status' just as `wait' would.
- */
-
-void
-nindy_wait( status )
- WAITTYPE *status;
+struct clean_up_tty_args
{
- DEMUX_DECL; /* OS-dependent data needed by DEMUX... macros */
- char buf[500]; /* FIXME, what is "500" here? */
- int i, n;
- unsigned char stop_exit;
- unsigned char stop_code;
- TTY_STRUCT tty;
- long ip_value, fp_value, sp_value; /* Reg values from stop */
-
-
- WSETEXIT( (*status), 0 );
-
- /* OPERATE IN PASSTHROUGH MODE UNTIL NINDY SENDS A DLE CHARACTER */
-
- /* Save current tty attributes, set up signals to restore them.
- */
- ioctl( 0, TIOCGETP, &orig_tty );
- old_ctrlc = signal( SIGINT, cleanup );
-#ifdef SIGTSTP
- old_ctrlz = signal( SIGTSTP, cleanup );
-#endif
-
- /* Pass input from keyboard to NINDY as it arrives.
- * NINDY will interpret <CR> and perform echo.
- */
- tty = orig_tty;
- TTY_NINDYTERM( tty );
- ioctl( 0, TIOCSETN, &tty );
-
- while ( 1 ){
- /* Go to sleep until there's something for us on either
- * the remote port or stdin.
- */
-
- DEMUX_WAIT( nindy_fd );
-
- /* Pass input through to correct place */
-
- n = DEMUX_READ( 0, buf, sizeof(buf) );
- if ( n ){ /* Input on stdin */
- write( nindy_fd, buf, n );
- }
-
- n = DEMUX_READ( nindy_fd, buf, sizeof(buf) );
- if ( n ){ /* Input on remote */
- /* Write out any characters in buffer preceding DLE */
- i = non_dle( buf, n );
- if ( i > 0 ){
- write( 1, buf, i );
- }
-
- if ( i != n ){
- /* There *was* a DLE in the buffer */
- stop_exit = ninStopWhy( &stop_code,
- &ip_value, &fp_value, &sp_value);
- if ( !stop_exit && (stop_code==STOP_SRQ) ){
- immediate_quit++;
- ninSrq();
- immediate_quit--;
- } else {
- /* Get out of loop */
- supply_register (IP_REGNUM, &ip_value);
- supply_register (FP_REGNUM, &fp_value);
- supply_register (SP_REGNUM, &sp_value);
- break;
- }
- }
- }
- }
-
- signal( SIGINT, old_ctrlc );
-#ifdef SIGTSTP
- signal( SIGTSTP, old_ctrlz );
-#endif
- restore_tty();
-
- if ( stop_exit ){ /* User program exited */
- WSETEXIT( (*status), stop_code );
- } else { /* Fault or trace */
- switch (stop_code){
- case STOP_GDB_BPT:
- case TRACE_STEP:
- /* Make it look like a VAX trace trap */
- stop_code = SIGTRAP;
- break;
- default:
- /* The target is not running Unix, and its
- faults/traces do not map nicely into Unix signals.
- Make sure they do not get confused with Unix signals
- by numbering them with values higher than the highest
- legal Unix signal. code in i960_print_fault(),
- called via PRINT_RANDOM_SIGNAL, will interpret the
- value. */
- stop_code += NSIG;
- break;
- }
- WSETSTOP( (*status), stop_code );
- }
-}
-
-/* Read the remote registers into the block REGS. */
-
-/* This is the block that ninRegsGet and ninRegsPut handles. */
-struct nindy_regs {
- char local_regs[16 * 4];
- char global_regs[16 * 4];
- char pcw_acw[2 * 4];
- char ip[4];
- char tcw[4];
- char fp_as_double[4 * 8];
+ serial_ttystate state;
+ serial_t serial;
};
-
-static int
-nindy_fetch_registers(regno)
- int regno;
-{
- struct nindy_regs nindy_regs;
- int regnum, inv;
- double dub;
-
- immediate_quit++;
- ninRegsGet( (char *) &nindy_regs );
- immediate_quit--;
-
- bcopy (nindy_regs.local_regs, ®isters[REGISTER_BYTE (R0_REGNUM)], 16*4);
- bcopy (nindy_regs.global_regs, ®isters[REGISTER_BYTE (G0_REGNUM)], 16*4);
- bcopy (nindy_regs.pcw_acw, ®isters[REGISTER_BYTE (PCW_REGNUM)], 2*4);
- bcopy (nindy_regs.ip, ®isters[REGISTER_BYTE (IP_REGNUM)], 1*4);
- bcopy (nindy_regs.tcw, ®isters[REGISTER_BYTE (TCW_REGNUM)], 1*4);
- for (regnum = FP0_REGNUM; regnum < FP0_REGNUM + 4; regnum++) {
- dub = unpack_double (builtin_type_double,
- &nindy_regs.fp_as_double[8 * (regnum - FP0_REGNUM)],
- &inv);
- /* dub now in host byte order */
- double_to_ieee_extended (ext_format_i960, &dub,
- ®isters[REGISTER_BYTE (regnum)]);
- }
-
- registers_fetched ();
- return 0;
-}
+static struct clean_up_tty_args tty_args;
static void
-nindy_prepare_to_store()
+clean_up_tty (PTR ptrarg)
{
- nindy_fetch_registers(-1);
+ struct clean_up_tty_args *args = (struct clean_up_tty_args *) ptrarg;
+ SERIAL_SET_TTY_STATE (args->serial, args->state);
+ xfree (args->state);
+ warning ("\n\nYou may need to reset the 80960 and/or reload your program.\n");
}
-static int
-nindy_store_registers(regno)
- int regno;
+/* Recover from ^Z or ^C while remote process is running */
+static void (*old_ctrlc) ();
+#ifdef SIGTSTP
+static void (*old_ctrlz) ();
+#endif
+
+static void
+clean_up_int (void)
{
- struct nindy_regs nindy_regs;
- int regnum, inv;
- double dub;
-
- bcopy (®isters[REGISTER_BYTE (R0_REGNUM)], nindy_regs.local_regs, 16*4);
- bcopy (®isters[REGISTER_BYTE (G0_REGNUM)], nindy_regs.global_regs, 16*4);
- bcopy (®isters[REGISTER_BYTE (PCW_REGNUM)], nindy_regs.pcw_acw, 2*4);
- bcopy (®isters[REGISTER_BYTE (IP_REGNUM)], nindy_regs.ip, 1*4);
- bcopy (®isters[REGISTER_BYTE (TCW_REGNUM)], nindy_regs.tcw, 1*4);
- /* Float regs. Only works on IEEE_FLOAT hosts. */
- for (regnum = FP0_REGNUM; regnum < FP0_REGNUM + 4; regnum++) {
- ieee_extended_to_double (ext_format_i960,
- ®isters[REGISTER_BYTE (regnum)], &dub);
- /* dub now in host byte order */
- /* FIXME-someday, the arguments to unpack_double are backward.
- It expects a target double and returns a host; we pass the opposite.
- This mostly works but not quite. */
- dub = unpack_double (builtin_type_double, &dub, &inv);
- /* dub now in target byte order */
- bcopy ((char *)&dub, &nindy_regs.fp_as_double[8 * (regnum - FP0_REGNUM)],
- 8);
- }
+ SERIAL_SET_TTY_STATE (tty_args.serial, tty_args.state);
+ xfree (tty_args.state);
- immediate_quit++;
- ninRegsPut( (char *) &nindy_regs );
- immediate_quit--;
- return 0;
+ signal (SIGINT, old_ctrlc);
+#ifdef SIGTSTP
+ signal (SIGTSTP, old_ctrlz);
+#endif
+ error ("\n\nYou may need to reset the 80960 and/or reload your program.\n");
}
-/* Read a word from remote address ADDR and return it.
- * This goes through the data cache.
+/* Wait until the remote machine stops. While waiting, operate in passthrough
+ * mode; i.e., pass everything NINDY sends to gdb_stdout, and everything from
+ * stdin to NINDY.
+ *
+ * Return to caller, storing status in 'status' just as `wait' would.
*/
-int
-nindy_fetch_word (addr)
- CORE_ADDR addr;
-{
- return dcache_fetch (addr);
-}
-/* Write a word WORD into remote address ADDR.
- This goes through the data cache. */
-
-void
-nindy_store_word (addr, word)
- CORE_ADDR addr;
- int word;
+static int
+nindy_wait (int pid, struct target_waitstatus *status)
{
- dcache_poke (addr, word);
-}
+ fd_set fds;
+ int c;
+ char buf[2];
+ int i, n;
+ unsigned char stop_exit;
+ unsigned char stop_code;
+ struct cleanup *old_cleanups;
+ long ip_value, fp_value, sp_value; /* Reg values from stop */
+
+ status->kind = TARGET_WAITKIND_EXITED;
+ status->value.integer = 0;
+
+ /* OPERATE IN PASSTHROUGH MODE UNTIL NINDY SENDS A DLE CHARACTER */
+
+ /* Save current tty attributes, and restore them when done. */
+ tty_args.serial = SERIAL_FDOPEN (0);
+ tty_args.state = SERIAL_GET_TTY_STATE (tty_args.serial);
+ old_ctrlc = signal (SIGINT, clean_up_int);
+#ifdef SIGTSTP
+ old_ctrlz = signal (SIGTSTP, clean_up_int);
+#endif
-/* Copy LEN bytes to or from inferior's memory starting at MEMADDR
- to debugger memory starting at MYADDR. Copy to inferior if
- WRITE is nonzero. Returns the length copied.
+ old_cleanups = make_cleanup (clean_up_tty, &tty_args);
- This is stolen almost directly from infptrace.c's child_xfer_memory,
- which also deals with a word-oriented memory interface. Sometime,
- FIXME, rewrite this to not use the word-oriented routines. */
+ /* Pass input from keyboard to NINDY as it arrives. NINDY will interpret
+ <CR> and perform echo. */
+ /* This used to set CBREAK and clear ECHO and CRMOD. I hope this is close
+ enough. */
+ SERIAL_RAW (tty_args.serial);
-int
-nindy_xfer_inferior_memory(memaddr, myaddr, len, write)
- CORE_ADDR memaddr;
- char *myaddr;
- int len;
- int write;
-{
- register int i;
- /* Round starting address down to longword boundary. */
- register CORE_ADDR addr = memaddr & - sizeof (int);
- /* Round ending address up; get number of longwords that makes. */
- register int count
- = (((memaddr + len) - addr) + sizeof (int) - 1) / sizeof (int);
- /* Allocate buffer of that many longwords. */
- register int *buffer = (int *) alloca (count * sizeof (int));
-
- if (write)
+ while (1)
{
- /* Fill start and end extra bytes of buffer with existing memory data. */
-
- if (addr != memaddr || len < (int)sizeof (int)) {
- /* Need part of initial word -- fetch it. */
- buffer[0] = nindy_fetch_word (addr);
- }
-
- if (count > 1) /* FIXME, avoid if even boundary */
+ /* Input on remote */
+ c = SERIAL_READCHAR (nindy_serial, -1);
+ if (c == SERIAL_ERROR)
{
- buffer[count - 1]
- = nindy_fetch_word (addr + (count - 1) * sizeof (int));
+ error ("Cannot read from serial line");
}
-
- /* Copy data to be written over corresponding part of buffer */
-
- bcopy (myaddr, (char *) buffer + (memaddr & (sizeof (int) - 1)), len);
-
- /* Write the entire buffer. */
-
- for (i = 0; i < count; i++, addr += sizeof (int))
+ else if (c == 0x1b) /* ESC */
{
- errno = 0;
- nindy_store_word (addr, buffer[i]);
- if (errno)
- return 0;
+ c = SERIAL_READCHAR (nindy_serial, -1);
+ c &= ~0x40;
}
- }
- else
- {
- /* Read all the longwords */
- for (i = 0; i < count; i++, addr += sizeof (int))
+ else if (c != 0x10) /* DLE */
+ /* Write out any characters preceding DLE */
{
- errno = 0;
- buffer[i] = nindy_fetch_word (addr);
- if (errno)
- return 0;
- QUIT;
+ buf[0] = (char) c;
+ write (1, buf, 1);
+ }
+ else
+ {
+ stop_exit = ninStopWhy (&stop_code,
+ &ip_value, &fp_value, &sp_value);
+ if (!stop_exit && (stop_code == STOP_SRQ))
+ {
+ immediate_quit++;
+ ninSrq ();
+ immediate_quit--;
+ }
+ else
+ {
+ /* Get out of loop */
+ supply_register (IP_REGNUM,
+ (char *) &ip_value);
+ supply_register (FP_REGNUM,
+ (char *) &fp_value);
+ supply_register (SP_REGNUM,
+ (char *) &sp_value);
+ break;
+ }
}
-
- /* Copy appropriate bytes out of the buffer. */
- bcopy ((char *) buffer + (memaddr & (sizeof (int) - 1)), myaddr, len);
}
- return len;
-}
-\f
-/* The data cache records all the data read from the remote machine
- since the last time it stopped.
- Each cache block holds 16 bytes of data
- starting at a multiple-of-16 address. */
+ SERIAL_SET_TTY_STATE (tty_args.serial, tty_args.state);
+ xfree (tty_args.state);
+ discard_cleanups (old_cleanups);
-#define DCACHE_SIZE 64 /* Number of cache blocks */
-
-struct dcache_block {
- struct dcache_block *next, *last;
- unsigned int addr; /* Address for which data is recorded. */
- int data[4];
-};
-
-struct dcache_block dcache_free, dcache_valid;
-
-/* Free all the data cache blocks, thus discarding all cached data. */
-static
-void
-dcache_flush ()
-{
- register struct dcache_block *db;
-
- while ((db = dcache_valid.next) != &dcache_valid)
+ if (stop_exit)
{
- remque (db);
- insque (db, &dcache_free);
+ status->kind = TARGET_WAITKIND_EXITED;
+ status->value.integer = stop_code;
}
-}
-
-/*
- * If addr is present in the dcache, return the address of the block
- * containing it.
- */
-static
-struct dcache_block *
-dcache_hit (addr)
- unsigned int addr;
-{
- register struct dcache_block *db;
-
- if (addr & 3)
- abort ();
-
- /* Search all cache blocks for one that is at this address. */
- db = dcache_valid.next;
- while (db != &dcache_valid)
+ else
{
- if ((addr & 0xfffffff0) == db->addr)
- return db;
- db = db->next;
+ /* nindy has some special stop code need to be handled */
+ if (stop_code == STOP_GDB_BPT)
+ stop_code = TRACE_STEP;
+ status->kind = TARGET_WAITKIND_STOPPED;
+ status->value.sig = i960_fault_to_signal (stop_code);
}
- return NULL;
+ return inferior_pid;
}
-/* Return the int data at address ADDR in dcache block DC. */
-static
-int
-dcache_value (db, addr)
- struct dcache_block *db;
- unsigned int addr;
+/* Read the remote registers into the block REGS. */
+
+/* This is the block that ninRegsGet and ninRegsPut handles. */
+struct nindy_regs
{
- if (addr & 3)
- abort ();
- return (db->data[(addr>>2)&3]);
-}
+ char local_regs[16 * 4];
+ char global_regs[16 * 4];
+ char pcw_acw[2 * 4];
+ char ip[4];
+ char tcw[4];
+ char fp_as_double[4 * 8];
+};
-/* Get a free cache block, put or keep it on the valid list,
- and return its address. The caller should store into the block
- the address and data that it describes, then remque it from the
- free list and insert it into the valid list. This procedure
- prevents errors from creeping in if a ninMemGet is interrupted
- (which used to put garbage blocks in the valid list...). */
-static
-struct dcache_block *
-dcache_alloc ()
+static void
+nindy_fetch_registers (int regno)
{
- register struct dcache_block *db;
+ struct nindy_regs nindy_regs;
+ int regnum;
- if ((db = dcache_free.next) == &dcache_free)
- {
- /* If we can't get one from the free list, take last valid and put
- it on the free list. */
- db = dcache_valid.last;
- remque (db);
- insque (db, &dcache_free);
- }
+ immediate_quit++;
+ ninRegsGet ((char *) &nindy_regs);
+ immediate_quit--;
+
+ memcpy (®isters[REGISTER_BYTE (R0_REGNUM)], nindy_regs.local_regs, 16 * 4);
+ memcpy (®isters[REGISTER_BYTE (G0_REGNUM)], nindy_regs.global_regs, 16 * 4);
+ memcpy (®isters[REGISTER_BYTE (PCW_REGNUM)], nindy_regs.pcw_acw, 2 * 4);
+ memcpy (®isters[REGISTER_BYTE (IP_REGNUM)], nindy_regs.ip, 1 * 4);
+ memcpy (®isters[REGISTER_BYTE (TCW_REGNUM)], nindy_regs.tcw, 1 * 4);
+ memcpy (®isters[REGISTER_BYTE (FP0_REGNUM)], nindy_regs.fp_as_double, 4 * 8);
- remque (db);
- insque (db, &dcache_valid);
- return (db);
+ registers_fetched ();
}
-/* Return the contents of the word at address ADDR in the remote machine,
- using the data cache. */
-static
-int
-dcache_fetch (addr)
- CORE_ADDR addr;
+static void
+nindy_prepare_to_store (void)
{
- register struct dcache_block *db;
-
- db = dcache_hit (addr);
- if (db == 0)
- {
- db = dcache_alloc ();
- immediate_quit++;
- ninMemGet(addr & ~0xf, (unsigned char *)db->data, 16);
- immediate_quit--;
- db->addr = addr & ~0xf;
- remque (db); /* Off the free list */
- insque (db, &dcache_valid); /* On the valid list */
- }
- return (dcache_value (db, addr));
+ /* Fetch all regs if they aren't already here. */
+ read_register_bytes (0, NULL, REGISTER_BYTES);
}
-/* Write the word at ADDR both in the data cache and in the remote machine. */
static void
-dcache_poke (addr, data)
- CORE_ADDR addr;
- int data;
+nindy_store_registers (int regno)
{
- register struct dcache_block *db;
-
- /* First make sure the word is IN the cache. DB is its cache block. */
- db = dcache_hit (addr);
- if (db == 0)
- {
- db = dcache_alloc ();
- immediate_quit++;
- ninMemGet(addr & ~0xf, (unsigned char *)db->data, 16);
- immediate_quit--;
- db->addr = addr & ~0xf;
- remque (db); /* Off the free list */
- insque (db, &dcache_valid); /* On the valid list */
- }
+ struct nindy_regs nindy_regs;
+ int regnum;
- /* Modify the word in the cache. */
- db->data[(addr>>2)&3] = data;
+ memcpy (nindy_regs.local_regs, ®isters[REGISTER_BYTE (R0_REGNUM)], 16 * 4);
+ memcpy (nindy_regs.global_regs, ®isters[REGISTER_BYTE (G0_REGNUM)], 16 * 4);
+ memcpy (nindy_regs.pcw_acw, ®isters[REGISTER_BYTE (PCW_REGNUM)], 2 * 4);
+ memcpy (nindy_regs.ip, ®isters[REGISTER_BYTE (IP_REGNUM)], 1 * 4);
+ memcpy (nindy_regs.tcw, ®isters[REGISTER_BYTE (TCW_REGNUM)], 1 * 4);
+ memcpy (nindy_regs.fp_as_double, ®isters[REGISTER_BYTE (FP0_REGNUM)], 8 * 4);
- /* Send the changed word. */
immediate_quit++;
- ninMemPut(addr, (unsigned char *)&data, 4);
+ ninRegsPut ((char *) &nindy_regs);
immediate_quit--;
}
-/* The cache itself. */
-struct dcache_block the_cache[DCACHE_SIZE];
+/* Copy LEN bytes to or from inferior's memory starting at MEMADDR
+ to debugger memory starting at MYADDR. Copy to inferior if
+ SHOULD_WRITE is nonzero. Returns the length copied. TARGET is
+ unused. */
-/* Initialize the data cache. */
-static void
-dcache_init ()
+int
+nindy_xfer_inferior_memory (CORE_ADDR memaddr, char *myaddr, int len,
+ int should_write,
+ struct mem_attrib *attrib ATTRIBUTE_UNUSED,
+ struct target_ops *target ATTRIBUTE_UNUSED)
{
- register i;
- register struct dcache_block *db;
-
- db = the_cache;
- dcache_free.next = dcache_free.last = &dcache_free;
- dcache_valid.next = dcache_valid.last = &dcache_valid;
- for (i=0;i<DCACHE_SIZE;i++,db++)
- insque (db, &dcache_free);
-}
+ int res;
+
+ if (len <= 0)
+ return 0;
+ if (should_write)
+ res = ninMemPut (memaddr, myaddr, len);
+ else
+ res = ninMemGet (memaddr, myaddr, len);
+ return res;
+}
+\f
static void
-nindy_create_inferior (execfile, args, env)
- char *execfile;
- char *args;
- char **env;
+nindy_create_inferior (char *execfile, char *args, char **env)
{
int entry_pt;
int pid;
error ("Can't pass arguments to remote NINDY process");
if (execfile == 0 || exec_bfd == 0)
- error ("No exec file specified");
+ error ("No executable file specified");
entry_pt = (int) bfd_get_start_address (exec_bfd);
pid = 42;
-#ifdef CREATE_INFERIOR_HOOK
- CREATE_INFERIOR_HOOK (pid);
-#endif
-
-/* The "process" (board) is already stopped awaiting our commands, and
- the program is already downloaded. We just set its PC and go. */
+ /* The "process" (board) is already stopped awaiting our commands, and
+ the program is already downloaded. We just set its PC and go. */
inferior_pid = pid; /* Needed for wait_for_inferior below */
clear_proceed_status ();
-#if defined (START_INFERIOR_HOOK)
- START_INFERIOR_HOOK ();
-#endif
-
/* Tell wait_for_inferior that we've started a new process. */
init_wait_for_inferior ();
/* Install inferior's terminal modes. */
target_terminal_inferior ();
- /* remote_start(args); */
- /* trap_expected = 0; */
/* insert_step_breakpoint (); FIXME, do we need this? */
- proceed ((CORE_ADDR)entry_pt, -1, 0); /* Let 'er rip... */
+ /* Let 'er rip... */
+ proceed ((CORE_ADDR) entry_pt, TARGET_SIGNAL_DEFAULT, 0);
}
static void
-reset_command(args, from_tty)
- char *args;
- int from_tty;
+reset_command (char *args, int from_tty)
{
- if ( !nindy_fd ){
- error( "No target system to reset -- use 'target nindy' command.");
- }
- if ( query("Really reset the target system?",0,0) ){
- send_break( nindy_fd );
- tty_flush( nindy_fd );
- }
+ if (nindy_serial == NULL)
+ {
+ error ("No target system to reset -- use 'target nindy' command.");
+ }
+ if (query ("Really reset the target system?", 0, 0))
+ {
+ SERIAL_SEND_BREAK (nindy_serial);
+ tty_flush (nindy_serial);
+ }
}
void
-nindy_kill (args, from_tty)
- char *args;
- int from_tty;
+nindy_kill (char *args, int from_tty)
{
- return; /* Ignore attempts to kill target system */
+ return; /* Ignore attempts to kill target system */
}
/* Clean up when a program exits.
instructions. */
void
-nindy_mourn_inferior ()
+nindy_mourn_inferior (void)
{
remove_breakpoints ();
+ unpush_target (&nindy_ops);
generic_mourn_inferior (); /* Do all the proper things now */
}
\f
+/* Pass the args the way catch_errors wants them. */
+static int
+nindy_open_stub (char *arg)
+{
+ nindy_open (arg, 1);
+ return 1;
+}
+
+static void
+nindy_load (char *filename, int from_tty)
+{
+ asection *s;
+ /* Can't do unix style forking on a VMS system, so we'll use bfd to do
+ all the work for us
+ */
+
+ bfd *file = bfd_openr (filename, 0);
+ if (!file)
+ {
+ perror_with_name (filename);
+ return;
+ }
+
+ if (!bfd_check_format (file, bfd_object))
+ {
+ error ("can't prove it's an object file\n");
+ return;
+ }
+
+ for (s = file->sections; s; s = s->next)
+ {
+ if (s->flags & SEC_LOAD)
+ {
+ char *buffer = xmalloc (s->_raw_size);
+ bfd_get_section_contents (file, s, buffer, 0, s->_raw_size);
+ printf ("Loading section %s, size %x vma %x\n",
+ s->name,
+ s->_raw_size,
+ s->vma);
+ ninMemPut (s->vma, buffer, s->_raw_size);
+ xfree (buffer);
+ }
+ }
+ bfd_close (file);
+}
+
+static int
+load_stub (char *arg)
+{
+ target_load (arg, 1);
+ return 1;
+}
+
/* This routine is run as a hook, just before the main command loop is
entered. If gdb is configured for the i960, but has not had its
nindy target specified yet, this will loop prompting the user to do so.
of this with a RETURN. This is useful when e.g. simply examining
an i960 object file on the host system. */
-nindy_before_main_loop ()
+void
+nindy_before_main_loop (void)
{
char ttyname[100];
char *p, *p2;
- setjmp(to_top_level);
- while (current_target != &nindy_ops) { /* remote tty not specified yet */
- if ( instream == stdin ){
- printf("\nAttach /dev/ttyNN -- specify NN, or \"quit\" to quit: ");
- fflush( stdout );
+ while (target_stack->target_ops != &nindy_ops) /* What is this crap??? */
+ { /* remote tty not specified yet */
+ if (instream == stdin)
+ {
+ printf_unfiltered ("\nAttach /dev/ttyNN -- specify NN, or \"quit\" to quit: ");
+ gdb_flush (gdb_stdout);
}
- fgets( ttyname, sizeof(ttyname)-1, stdin );
+ fgets (ttyname, sizeof (ttyname) - 1, stdin);
- /* Strip leading and trailing whitespace */
- for ( p = ttyname; isspace(*p); p++ ){
- ;
+ /* Strip leading and trailing whitespace */
+ for (p = ttyname; isspace (*p); p++)
+ {
+ ;
}
- if ( *p == '\0' ){
- return; /* User just hit spaces or return, wants out */
+ if (*p == '\0')
+ {
+ return; /* User just hit spaces or return, wants out */
}
- for ( p2= p; !isspace(*p2) && (*p2 != '\0'); p2++ ){
- ;
+ for (p2 = p; !isspace (*p2) && (*p2 != '\0'); p2++)
+ {
+ ;
}
- *p2= '\0';
- if ( !strcmp("quit",p) ){
- exit(1);
+ *p2 = '\0';
+ if (STREQ ("quit", p))
+ {
+ exit (1);
}
- nindy_open( p, 1 );
-
- /* Now that we have a tty open for talking to the remote machine,
- download the executable file if one was specified. */
- if ( !setjmp(to_top_level) && exec_bfd ) {
- target_load (bfd_get_filename (exec_bfd), 1);
+ if (catch_errors (nindy_open_stub, p, "", RETURN_MASK_ALL))
+ {
+ /* Now that we have a tty open for talking to the remote machine,
+ download the executable file if one was specified. */
+ if (exec_bfd)
+ {
+ catch_errors (load_stub, bfd_get_filename (exec_bfd), "",
+ RETURN_MASK_ALL);
+ }
}
- }
+ }
}
\f
/* Define the target subroutine names */
-struct target_ops nindy_ops = {
- "nindy", "Remote serial target in i960 NINDY-specific protocol",
- nindy_open, nindy_close,
- 0, nindy_detach, nindy_resume, nindy_wait,
- nindy_fetch_registers, nindy_store_registers,
- nindy_prepare_to_store, 0, 0, /* conv_from, conv_to */
- nindy_xfer_inferior_memory, nindy_files_info,
- 0, 0, /* insert_breakpoint, remove_breakpoint, */
- 0, 0, 0, 0, 0, /* Terminal crud */
- nindy_kill,
- nindy_load, add_syms_addr_command,
- call_function_by_hand,
- 0, /* lookup_symbol */
- nindy_create_inferior,
- nindy_mourn_inferior,
- process_stratum, 0, /* next */
- 1, 1, 1, 1, 1, /* all mem, mem, stack, regs, exec */
- OPS_MAGIC, /* Always the last thing */
-};
+struct target_ops nindy_ops;
+
+static void
+init_nindy_ops (void)
+{
+ nindy_ops.to_shortname = "nindy";
+ "Remote serial target in i960 NINDY-specific protocol",
+ nindy_ops.to_longname = "Use a remote i960 system running NINDY connected by a serial line.\n\
+Specify the name of the device the serial line is connected to.\n\
+The speed (baud rate), whether to use the old NINDY protocol,\n\
+and whether to send a break on startup, are controlled by options\n\
+specified when you started GDB.";
+ nindy_ops.to_doc = "";
+ nindy_ops.to_open = nindy_open;
+ nindy_ops.to_close = nindy_close;
+ nindy_ops.to_attach = 0;
+ nindy_ops.to_post_attach = NULL;
+ nindy_ops.to_require_attach = NULL;
+ nindy_ops.to_detach = nindy_detach;
+ nindy_ops.to_require_detach = NULL;
+ nindy_ops.to_resume = nindy_resume;
+ nindy_ops.to_wait = nindy_wait;
+ nindy_ops.to_post_wait = NULL;
+ nindy_ops.to_fetch_registers = nindy_fetch_registers;
+ nindy_ops.to_store_registers = nindy_store_registers;
+ nindy_ops.to_prepare_to_store = nindy_prepare_to_store;
+ nindy_ops.to_xfer_memory = nindy_xfer_inferior_memory;
+ nindy_ops.to_files_info = nindy_files_info;
+ nindy_ops.to_insert_breakpoint = memory_insert_breakpoint;
+ nindy_ops.to_remove_breakpoint = memory_remove_breakpoint;
+ nindy_ops.to_terminal_init = 0;
+ nindy_ops.to_terminal_inferior = 0;
+ nindy_ops.to_terminal_ours_for_output = 0;
+ nindy_ops.to_terminal_ours = 0;
+ nindy_ops.to_terminal_info = 0; /* Terminal crud */
+ nindy_ops.to_kill = nindy_kill;
+ nindy_ops.to_load = nindy_load;
+ nindy_ops.to_lookup_symbol = 0; /* lookup_symbol */
+ nindy_ops.to_create_inferior = nindy_create_inferior;
+ nindy_ops.to_post_startup_inferior = NULL;
+ nindy_ops.to_acknowledge_created_inferior = NULL;
+ nindy_ops.to_clone_and_follow_inferior = NULL;
+ nindy_ops.to_post_follow_inferior_by_clone = NULL;
+ nindy_ops.to_insert_fork_catchpoint = NULL;
+ nindy_ops.to_remove_fork_catchpoint = NULL;
+ nindy_ops.to_insert_vfork_catchpoint = NULL;
+ nindy_ops.to_remove_vfork_catchpoint = NULL;
+ nindy_ops.to_has_forked = NULL;
+ nindy_ops.to_has_vforked = NULL;
+ nindy_ops.to_can_follow_vfork_prior_to_exec = NULL;
+ nindy_ops.to_post_follow_vfork = NULL;
+ nindy_ops.to_insert_exec_catchpoint = NULL;
+ nindy_ops.to_remove_exec_catchpoint = NULL;
+ nindy_ops.to_has_execd = NULL;
+ nindy_ops.to_reported_exec_events_per_exec_call = NULL;
+ nindy_ops.to_has_exited = NULL;
+ nindy_ops.to_mourn_inferior = nindy_mourn_inferior;
+ nindy_ops.to_can_run = 0; /* can_run */
+ nindy_ops.to_notice_signals = 0; /* notice_signals */
+ nindy_ops.to_thread_alive = 0; /* to_thread_alive */
+ nindy_ops.to_stop = 0; /* to_stop */
+ nindy_ops.to_pid_to_exec_file = NULL;
+ nindy_ops.to_core_file_to_sym_file = NULL;
+ nindy_ops.to_stratum = process_stratum;
+ nindy_ops.DONT_USE = 0; /* next */
+ nindy_ops.to_has_all_memory = 1;
+ nindy_ops.to_has_memory = 1;
+ nindy_ops.to_has_stack = 1;
+ nindy_ops.to_has_registers = 1;
+ nindy_ops.to_has_execution = 1; /* all mem, mem, stack, regs, exec */
+ nindy_ops.to_sections = 0;
+ nindy_ops.to_sections_end = 0; /* Section pointers */
+ nindy_ops.to_magic = OPS_MAGIC; /* Always the last thing */
+}
void
-_initialize_nindy ()
+_initialize_nindy (void)
{
+ init_nindy_ops ();
add_target (&nindy_ops);
add_com ("reset", class_obscure, reset_command,
"Send a 'break' to the remote target system.\n\
projects / platform / upstream / binutils.git / blobdiff