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Diffstat (limited to 'gdb/remote-nindy.c')
| -rw-r--r-- | gdb/remote-nindy.c | 762 |
1 files changed, 0 insertions, 762 deletions
diff --git a/gdb/remote-nindy.c b/gdb/remote-nindy.c deleted file mode 100644 index 679dfad919e..00000000000 --- a/gdb/remote-nindy.c +++ /dev/null @@ -1,762 +0,0 @@ -/* Memory-access and commands for remote NINDY process, for GDB. - - Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1998, 1999, - 2000, 2001, 2002 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 "regcache.h" - -#include <sys/file.h> -#include <ctype.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 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 struct serial *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 (int); - -static void nindy_store_registers (int); - -static char *savename; - -static void -nindy_close (int quitting) -{ - if (nindy_serial != NULL) - serial_close (nindy_serial); - nindy_serial = NULL; - - if (savename) - xfree (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 (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; - - /* 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 (char *name, int from_tty) -{ - if (name) - error ("Too many arguments"); - pop_target (); -} - -static void -nindy_files_info (void) -{ - /* 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 BUF before - the first DLE character. N is maximum number of characters to - consider. */ - -static -int -non_dle (char *buf, int n) -{ - int i; - - for (i = 0; i < n; i++) - { - if (buf[i] == DLE) - { - break; - } - } - return i; -} - -/* Tell the remote machine to resume. */ - -void -nindy_resume (ptid_t ptid, int step, enum target_signal siggnal) -{ - if (siggnal != TARGET_SIGNAL_0 && siggnal != stop_signal) - warning ("Can't send signals to remote NINDY targets."); - - 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; - struct serial *serial; -}; -static struct clean_up_tty_args tty_args; - -static void -clean_up_tty (PTR ptrarg) -{ - 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"); -} - -/* 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) -{ - serial_set_tty_state (tty_args.serial, tty_args.state); - xfree (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 ptid_t -nindy_wait (ptid_t ptid, 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); - xfree (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_ptid; -} - -/* 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 (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 (void) -{ - /* Fetch all regs if they aren't already here. */ - read_register_bytes (0, NULL, REGISTER_BYTES); -} - -static void -nindy_store_registers (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--; -} - -/* 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. */ - -int -nindy_xfer_inferior_memory (CORE_ADDR memaddr, char *myaddr, int len, - int should_write, struct mem_attrib *attrib, - struct target_ops *target) -{ - int res; - - if (len <= 0) - return 0; - - if (should_write) - res = ninMemPut (memaddr, myaddr, len); - else - res = ninMemGet (memaddr, myaddr, len); - - return res; -} - -static void -nindy_create_inferior (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_ptid = pid_to_ptid (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 (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 (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 (void) -{ - 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 (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. - - 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 (void) -{ - 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_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 (void) -{ - 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."); -} |