mirror of
https://github.com/espressif/binutils-gdb.git
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Initial creation of sourceware repository
This commit is contained in:
Stan Shebs
852
gdb/remote-nindy.c
Normal file
852
gdb/remote-nindy.c
Normal file
@ -0,0 +1,852 @@
|
||||
/* Memory-access and commands for remote NINDY process, for GDB.
|
||||
Copyright 1990, 1991, 1992, 1993 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!
|
||||
*/
|
||||
|
||||
/*
|
||||
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.
|
||||
*/
|
||||
|
||||
/*****************************************************************************
|
||||
*
|
||||
* REMOTE COMMUNICATION PROTOCOL BETWEEN GDB960 AND THE NINDY ROM MONITOR.
|
||||
*
|
||||
*
|
||||
* MODES OF OPERATION
|
||||
* ----- -- ---------
|
||||
*
|
||||
* As far as NINDY is concerned, GDB is always in one of two modes: command
|
||||
* mode or passthrough mode.
|
||||
*
|
||||
* In command mode (the default) pre-defined packets containing requests
|
||||
* are sent by GDB to NINDY. NINDY never talks except in reponse to a request.
|
||||
*
|
||||
* Once the the user program is started, GDB enters passthrough mode, to give
|
||||
* the user program access to the terminal. GDB remains in this mode until
|
||||
* NINDY indicates that the program has stopped.
|
||||
*
|
||||
*
|
||||
* PASSTHROUGH MODE
|
||||
* ----------- ----
|
||||
*
|
||||
* GDB writes all input received from the keyboard directly to NINDY, and writes
|
||||
* all characters received from NINDY directly to the monitor.
|
||||
*
|
||||
* Keyboard input is neither buffered nor echoed to the monitor.
|
||||
*
|
||||
* GDB remains in passthrough mode until NINDY sends a single ^P character,
|
||||
* to indicate that the user process has stopped.
|
||||
*
|
||||
* Note:
|
||||
* GDB assumes NINDY performs a 'flushreg' when the user program stops.
|
||||
*
|
||||
*
|
||||
* COMMAND MODE
|
||||
* ------- ----
|
||||
*
|
||||
* All info (except for message ack and nak) is transferred between gdb
|
||||
* and the remote processor in messages of the following format:
|
||||
*
|
||||
* <info>#<checksum>
|
||||
*
|
||||
* where
|
||||
* # is a literal character
|
||||
*
|
||||
* <info> ASCII information; all numeric information is in the
|
||||
* form of hex digits ('0'-'9' and lowercase 'a'-'f').
|
||||
*
|
||||
* <checksum>
|
||||
* is a pair of ASCII hex digits representing an 8-bit
|
||||
* checksum formed by adding together each of the
|
||||
* characters in <info>.
|
||||
*
|
||||
* The receiver of a message always sends a single character to the sender
|
||||
* to indicate that the checksum was good ('+') or bad ('-'); the sender
|
||||
* re-transmits the entire message over until a '+' is received.
|
||||
*
|
||||
* In response to a command NINDY always sends back either data or
|
||||
* a result code of the form "Xnn", where "nn" are hex digits and "X00"
|
||||
* means no errors. (Exceptions: the "s" and "c" commands don't respond.)
|
||||
*
|
||||
* SEE THE HEADER OF THE FILE "gdb.c" IN THE NINDY MONITOR SOURCE CODE FOR A
|
||||
* FULL DESCRIPTION OF LEGAL COMMANDS.
|
||||
*
|
||||
* SEE THE FILE "stop.h" IN THE NINDY MONITOR SOURCE CODE FOR A LIST
|
||||
* OF STOP CODES.
|
||||
*
|
||||
***************************************************************************/
|
||||
|
||||
#include "defs.h"
|
||||
#include <signal.h>
|
||||
#include <sys/types.h>
|
||||
#include <setjmp.h>
|
||||
|
||||
#include "frame.h"
|
||||
#include "inferior.h"
|
||||
#include "bfd.h"
|
||||
#include "symfile.h"
|
||||
#include "target.h"
|
||||
#include "gdbcore.h"
|
||||
#include "command.h"
|
||||
#include "floatformat.h"
|
||||
|
||||
#include "wait.h"
|
||||
#include <sys/file.h>
|
||||
#include <ctype.h>
|
||||
#include "serial.h"
|
||||
#include "nindy-share/env.h"
|
||||
#include "nindy-share/stop.h"
|
||||
|
||||
#include "dcache.h"
|
||||
#include "remote-utils.h"
|
||||
|
||||
static DCACHE *nindy_dcache;
|
||||
|
||||
extern int unlink();
|
||||
extern char *getenv();
|
||||
extern char *mktemp();
|
||||
|
||||
extern void generic_mourn_inferior ();
|
||||
|
||||
extern struct target_ops nindy_ops;
|
||||
extern FILE *instream;
|
||||
|
||||
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 */
|
||||
|
||||
#define DLE '\020' /* Character NINDY sends to indicate user program has
|
||||
* halted. */
|
||||
#define TRUE 1
|
||||
#define FALSE 0
|
||||
|
||||
/* 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
|
||||
nindy_fetch_registers PARAMS ((int));
|
||||
|
||||
static void
|
||||
nindy_store_registers PARAMS ((int));
|
||||
|
||||
static char *savename;
|
||||
|
||||
static void
|
||||
nindy_close (quitting)
|
||||
int quitting;
|
||||
{
|
||||
if (nindy_serial != NULL)
|
||||
SERIAL_CLOSE (nindy_serial);
|
||||
nindy_serial = NULL;
|
||||
|
||||
if (savename)
|
||||
free (savename);
|
||||
savename = 0;
|
||||
}
|
||||
|
||||
/* Open a connection to a remote debugger.
|
||||
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;
|
||||
{
|
||||
char baudrate[1024];
|
||||
|
||||
if (!name)
|
||||
error_no_arg ("serial port device name");
|
||||
|
||||
target_preopen (from_tty);
|
||||
|
||||
nindy_close (0);
|
||||
|
||||
have_regs = regs_changed = 0;
|
||||
nindy_dcache = dcache_init(ninMemGet, ninMemPut);
|
||||
|
||||
/* 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_serial == NULL)
|
||||
{
|
||||
perror_with_name (name);
|
||||
}
|
||||
|
||||
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;
|
||||
{
|
||||
if (name)
|
||||
error ("Too many arguments");
|
||||
pop_target ();
|
||||
}
|
||||
|
||||
static void
|
||||
nindy_files_info ()
|
||||
{
|
||||
/* 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": "");
|
||||
}
|
||||
|
||||
/* Return the number of characters in the buffer before
|
||||
the first DLE character. */
|
||||
|
||||
static
|
||||
int
|
||||
non_dle( buf, n )
|
||||
char *buf; /* Character buffer; NOT '\0'-terminated */
|
||||
int n; /* Number of characters in buffer */
|
||||
{
|
||||
int i;
|
||||
|
||||
for ( i = 0; i < n; i++ ){
|
||||
if ( buf[i] == DLE ){
|
||||
break;
|
||||
}
|
||||
}
|
||||
return i;
|
||||
}
|
||||
|
||||
/* Tell the remote machine to resume. */
|
||||
|
||||
void
|
||||
nindy_resume (pid, step, siggnal)
|
||||
int pid, step;
|
||||
enum target_signal siggnal;
|
||||
{
|
||||
if (siggnal != TARGET_SIGNAL_0 && siggnal != stop_signal)
|
||||
warning ("Can't send signals to remote NINDY targets.");
|
||||
|
||||
dcache_flush(nindy_dcache);
|
||||
if ( regs_changed )
|
||||
{
|
||||
nindy_store_registers (-1);
|
||||
regs_changed = 0;
|
||||
}
|
||||
have_regs = 0;
|
||||
ninGo( step );
|
||||
}
|
||||
|
||||
/* 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. */
|
||||
|
||||
struct clean_up_tty_args {
|
||||
serial_ttystate state;
|
||||
serial_t serial;
|
||||
};
|
||||
static struct clean_up_tty_args tty_args;
|
||||
|
||||
static void
|
||||
clean_up_tty (ptrarg)
|
||||
PTR ptrarg;
|
||||
{
|
||||
struct clean_up_tty_args *args = (struct clean_up_tty_args *) ptrarg;
|
||||
SERIAL_SET_TTY_STATE (args->serial, args->state);
|
||||
free (args->state);
|
||||
warning ("\n\nYou may need to reset the 80960 and/or reload your program.\n");
|
||||
}
|
||||
|
||||
/* 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()
|
||||
{
|
||||
SERIAL_SET_TTY_STATE (tty_args.serial, tty_args.state);
|
||||
free (tty_args.state);
|
||||
|
||||
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");
|
||||
}
|
||||
|
||||
/* 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.
|
||||
*/
|
||||
|
||||
static int
|
||||
nindy_wait( pid, status )
|
||||
int pid;
|
||||
struct target_waitstatus *status;
|
||||
{
|
||||
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
|
||||
|
||||
old_cleanups = make_cleanup (clean_up_tty, &tty_args);
|
||||
|
||||
/* 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);
|
||||
|
||||
while (1)
|
||||
{
|
||||
/* Input on remote */
|
||||
c = SERIAL_READCHAR (nindy_serial, -1);
|
||||
if (c == SERIAL_ERROR)
|
||||
{
|
||||
error ("Cannot read from serial line");
|
||||
}
|
||||
else if (c == 0x1b) /* ESC */
|
||||
{
|
||||
c = SERIAL_READCHAR (nindy_serial, -1);
|
||||
c &= ~0x40;
|
||||
}
|
||||
else if (c != 0x10) /* DLE */
|
||||
/* Write out any characters preceding DLE */
|
||||
{
|
||||
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;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
SERIAL_SET_TTY_STATE (tty_args.serial, tty_args.state);
|
||||
free (tty_args.state);
|
||||
discard_cleanups (old_cleanups);
|
||||
|
||||
if (stop_exit)
|
||||
{
|
||||
status->kind = TARGET_WAITKIND_EXITED;
|
||||
status->value.integer = stop_code;
|
||||
}
|
||||
else
|
||||
{
|
||||
/* 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 inferior_pid;
|
||||
}
|
||||
|
||||
/* 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];
|
||||
};
|
||||
|
||||
static void
|
||||
nindy_fetch_registers(regno)
|
||||
int regno;
|
||||
{
|
||||
struct nindy_regs nindy_regs;
|
||||
int regnum;
|
||||
|
||||
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);
|
||||
|
||||
registers_fetched ();
|
||||
}
|
||||
|
||||
static void
|
||||
nindy_prepare_to_store()
|
||||
{
|
||||
/* Fetch all regs if they aren't already here. */
|
||||
read_register_bytes (0, NULL, REGISTER_BYTES);
|
||||
}
|
||||
|
||||
static void
|
||||
nindy_store_registers(regno)
|
||||
int regno;
|
||||
{
|
||||
struct nindy_regs nindy_regs;
|
||||
int regnum;
|
||||
|
||||
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);
|
||||
|
||||
immediate_quit++;
|
||||
ninRegsPut( (char *) &nindy_regs );
|
||||
immediate_quit--;
|
||||
}
|
||||
|
||||
/* Read a word from remote address ADDR and return it.
|
||||
* This goes through the data cache.
|
||||
*/
|
||||
int
|
||||
nindy_fetch_word (addr)
|
||||
CORE_ADDR addr;
|
||||
{
|
||||
return dcache_fetch (nindy_dcache, 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;
|
||||
{
|
||||
dcache_poke (nindy_dcache, addr, word);
|
||||
}
|
||||
|
||||
/* 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.
|
||||
|
||||
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. */
|
||||
|
||||
int
|
||||
nindy_xfer_inferior_memory(memaddr, myaddr, len, should_write, target)
|
||||
CORE_ADDR memaddr;
|
||||
char *myaddr;
|
||||
int len;
|
||||
int should_write;
|
||||
struct target_ops *target; /* ignored */
|
||||
{
|
||||
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 (should_write)
|
||||
{
|
||||
/* 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 */
|
||||
{
|
||||
buffer[count - 1]
|
||||
= nindy_fetch_word (addr + (count - 1) * sizeof (int));
|
||||
}
|
||||
|
||||
/* Copy data to be written over corresponding part of buffer */
|
||||
|
||||
memcpy ((char *) buffer + (memaddr & (sizeof (int) - 1)), myaddr, len);
|
||||
|
||||
/* Write the entire buffer. */
|
||||
|
||||
for (i = 0; i < count; i++, addr += sizeof (int))
|
||||
{
|
||||
errno = 0;
|
||||
nindy_store_word (addr, buffer[i]);
|
||||
if (errno)
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Read all the longwords */
|
||||
for (i = 0; i < count; i++, addr += sizeof (int))
|
||||
{
|
||||
errno = 0;
|
||||
buffer[i] = nindy_fetch_word (addr);
|
||||
if (errno)
|
||||
return 0;
|
||||
QUIT;
|
||||
}
|
||||
|
||||
/* Copy appropriate bytes out of the buffer. */
|
||||
memcpy (myaddr, (char *) buffer + (memaddr & (sizeof (int) - 1)), len);
|
||||
}
|
||||
return len;
|
||||
}
|
||||
|
||||
static void
|
||||
nindy_create_inferior (execfile, args, env)
|
||||
char *execfile;
|
||||
char *args;
|
||||
char **env;
|
||||
{
|
||||
int entry_pt;
|
||||
int pid;
|
||||
|
||||
if (args && *args)
|
||||
error ("Can't pass arguments to remote NINDY process");
|
||||
|
||||
if (execfile == 0 || exec_bfd == 0)
|
||||
error ("No executable file specified");
|
||||
|
||||
entry_pt = (int) bfd_get_start_address (exec_bfd);
|
||||
|
||||
pid = 42;
|
||||
|
||||
/* 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 ();
|
||||
|
||||
/* Tell wait_for_inferior that we've started a new process. */
|
||||
init_wait_for_inferior ();
|
||||
|
||||
/* Set up the "saved terminal modes" of the inferior
|
||||
based on what modes we are starting it with. */
|
||||
target_terminal_init ();
|
||||
|
||||
/* Install inferior's terminal modes. */
|
||||
target_terminal_inferior ();
|
||||
|
||||
/* insert_step_breakpoint (); FIXME, do we need this? */
|
||||
/* Let 'er rip... */
|
||||
proceed ((CORE_ADDR)entry_pt, TARGET_SIGNAL_DEFAULT, 0);
|
||||
}
|
||||
|
||||
static void
|
||||
reset_command(args, from_tty)
|
||||
char *args;
|
||||
int from_tty;
|
||||
{
|
||||
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;
|
||||
{
|
||||
return; /* Ignore attempts to kill target system */
|
||||
}
|
||||
|
||||
/* Clean up when a program exits.
|
||||
|
||||
The program actually lives on in the remote processor's RAM, and may be
|
||||
run again without a download. Don't leave it full of breakpoint
|
||||
instructions. */
|
||||
|
||||
void
|
||||
nindy_mourn_inferior ()
|
||||
{
|
||||
remove_breakpoints ();
|
||||
unpush_target (&nindy_ops);
|
||||
generic_mourn_inferior (); /* Do all the proper things now */
|
||||
}
|
||||
|
||||
/* Pass the args the way catch_errors wants them. */
|
||||
static int
|
||||
nindy_open_stub (arg)
|
||||
char *arg;
|
||||
{
|
||||
nindy_open (arg, 1);
|
||||
return 1;
|
||||
}
|
||||
|
||||
static void
|
||||
nindy_load( filename, from_tty )
|
||||
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);
|
||||
free(buffer);
|
||||
}
|
||||
}
|
||||
bfd_close(file);
|
||||
}
|
||||
|
||||
static int
|
||||
load_stub (arg)
|
||||
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.
|
||||
|
||||
Unlike the loop provided by Intel, we actually let the user get out
|
||||
of this with a RETURN. This is useful when e.g. simply examining
|
||||
an i960 object file on the host system. */
|
||||
|
||||
void
|
||||
nindy_before_main_loop ()
|
||||
{
|
||||
char ttyname[100];
|
||||
char *p, *p2;
|
||||
|
||||
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 );
|
||||
|
||||
/* Strip leading and trailing whitespace */
|
||||
for ( p = ttyname; isspace(*p); p++ ){
|
||||
;
|
||||
}
|
||||
if ( *p == '\0' ){
|
||||
return; /* User just hit spaces or return, wants out */
|
||||
}
|
||||
for ( p2= p; !isspace(*p2) && (*p2 != '\0'); p2++ ){
|
||||
;
|
||||
}
|
||||
*p2= '\0';
|
||||
if ( STREQ("quit",p) ){
|
||||
exit(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);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/* Define the target subroutine names */
|
||||
|
||||
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 ()
|
||||
{
|
||||
init_nindy_ops() ;
|
||||
add_target (&nindy_ops);
|
||||
add_com ("reset", class_obscure, reset_command,
|
||||
"Send a 'break' to the remote target system.\n\
|
||||
Only useful if the target has been equipped with a circuit\n\
|
||||
to perform a hard reset when a break is detected.");
|
||||
}
|
||||
Reference in New Issue
Block a user