diff options
| -rw-r--r-- | gdb/monitor.h | 62 | ||||
| -rw-r--r-- | gdb/remote-monitor.c | 1250 |
2 files changed, 1312 insertions, 0 deletions
diff --git a/gdb/monitor.h b/gdb/monitor.h new file mode 100644 index 0000000..77095d7 --- /dev/null +++ b/gdb/monitor.h @@ -0,0 +1,62 @@ +/* Remote debugging interface for ROM68K boot monitor, for GDB. + * Copyright 1990, 1991, 1992 Free Software Foundation, Inc. + * Contributed by Cygnus Support. Written by Rob Savoye for Cygnus. + * + * Copyright 1990, 1991, 1992 Free Software Foundation, Inc. + * Contributed by Cygnus Support. Written by Rob Savoye for Cygnus. + * + * This file is part of GDB. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +struct monitor_ops { + char *execute; /* execute or usually GO command */ + char *resume; /* continue command */ + char *step; /* single step */ + char *set_break; /* set a breakpoint */ + char *clr_break; /* clear a breakpoint */ + char *set_mem; /* set memory to a value */ + char *dis_mem; /* display memory */ + char *mem_prompt; /* prompt memory commands use */ + char *set_reg; /* set a register */ + char *reg_delim; /* delimiter between registers */ + char *get_reg; /* read a register */ + char *load; /* download command */ + char *prompt; /* monitor command prompt */ + char *cmd_delim; /* end-of-command delimitor */ + char *cmd_end; /* optional command terminator */ +}; + +extern struct monitor_ops *current_monitor; + +#define GO_CMD (current_monitor->execute) +#define CONT_CMD (current_monitor->resume) +#define STEP_CMD (current_monitor->step) +#define SET_BREAK_CMD (current_monitor->set_break) +#define CLR_BREAK_CMD (current_monitor->clr_break) +#define MEM_SET_CMD (current_monitor->set_mem) +#define MEM_DIS_CMD (current_monitor->dis_mem) +#define LOAD_CMD (current_monitor->load) +#define GET_REG (current_monitor->get_reg) +#define REG_DELIM (current_monitor->reg_delim) +#define SET_REG (current_monitor->set_reg) +#define CMD_END (current_monitor->cmd_end) +#define CMD_DELIM (current_monitor->cmd_delim) +#define PROMPT (current_monitor->prompt) +#define MEM_PROMPT (current_monitor->mem_prompt) + +#define push_monitor(x) current_monitor = x; + diff --git a/gdb/remote-monitor.c b/gdb/remote-monitor.c new file mode 100644 index 0000000..7eac458 --- /dev/null +++ b/gdb/remote-monitor.c @@ -0,0 +1,1250 @@ +/* Remote debugging interface for MONITOR boot monitor, for GDB. + Copyright 1990, 1991, 1992 Free Software Foundation, Inc. + Contributed by Cygnus Support. Written by Rob Savoye for Cygnus. + +This file is part of GDB. + +This program is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2 of the License, or +(at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program; if not, write to the Free Software +Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ + +/* This file was derived from remote-eb.c, which did a similar job, but for + an AMD-29K running EBMON. That file was in turn derived from remote.c + as mentioned in the following comment (left in for comic relief): + + "This is like remote.c but is for an esoteric situation-- + having a 29k board in a PC hooked up to a unix machine with + a serial line, and running ctty com1 on the PC, through which + the unix machine can run ebmon. Not to mention that the PC + has PC/NFS, so it can access the same executables that gdb can, + over the net in real time." + + In reality, this module talks to a debug monitor called 'MONITOR', which + We communicate with MONITOR via either a direct serial line, or a TCP + (or possibly TELNET) stream to a terminal multiplexor, + which in turn talks to the target board. + + This is based on remote-st2000.c. I left in the above note here for histerical + reasons. +*/ + +#include "defs.h" +#include "gdbcore.h" +#include "target.h" +#include "wait.h" +#include <varargs.h> +#include <signal.h> +#include <string.h> +#include <sys/types.h> +#include "command.h" +#include "serial.h" +#include "monitor.h" + +#ifdef HAVE_TERMIO +# define TERMINAL struct termios +#else +# define TERMINAL struct sgttyb +#endif + +struct monitor_ops *current_monitor; +extern struct target_ops rom68k_ops; /* Forward declaration */ +extern struct target_ops mon68_ops; /* Forward declaration */ +extern struct target_ops bug_ops; /* Forward declaration */ +extern struct monitor_ops rom68k_cmds; /* Forward declaration */ +extern struct monitor_ops mon68_cmds; /* Forward declaration */ +extern struct monitor_ops bug_cmds; /* Forward declaration */ +extern struct cmd_list_element *setlist; +extern struct cmd_list_element *unsetlist; +struct cmd_list_element *showlist; + +static void monitor_close(); +static void monitor_fetch_register(); +static void monitor_store_register(); +static int kiodebug; /* flag set by "set remotedebug" */ +static int hashmark; /* flag set by "set hash" */ + +#define LOG_FILE "monitor.log" +#if defined (LOG_FILE) +FILE *log_file; +#endif + +static int timeout = 24; + +/* Descriptor for I/O to remote machine. Initialize it to -1 so that + monitor_open knows that we don't have a file open when the program + starts. */ +int monitor_desc = -1; + +/* Send data to monitor. Works just like printf. */ + +static void +printf_monitor(va_alist) + va_dcl +{ + va_list args; + char *pattern; + char buf[200]; + int i; + + va_start(args); + + pattern = va_arg(args, char *); + + vsprintf(buf, pattern, args); + + if (!serial_write(buf, strlen(buf))) + fprintf(stderr, "serial_write failed: %s\n", safe_strerror(errno)); +} + +/* Read a character from the remote system, doing all the fancy + timeout stuff. */ +static int +readchar(timeout) + int timeout; +{ + int c; + + c = serial_readchar(timeout); + + if (kiodebug) + putchar(c & 0x7f); + +#ifdef LOG_FILE + if (isascii (c)) + putc(c & 0x7f, log_file); +#endif + + if (c >= 0) + return c & 0x7f; + + if (c == -2) + { + if (timeout == 0) + return c; /* Polls shouldn't generate timeout errors */ + + error("Timeout reading from remote system."); + } + + perror_with_name("remote-monitor"); +} + +/* Scan input from the remote system, until STRING is found. If DISCARD is + non-zero, then discard non-matching input, else print it out. + Let the user break out immediately. */ +static void +expect(string, discard) + char *string; + int discard; +{ + char *p = string; + int c; + + if (kiodebug) + printf ("Expecting \"%s\"\n", string); + + immediate_quit = 1; + while (1) + { + c = readchar(timeout); + if (!isascii (c)) + continue; + if (c == *p++) + { + if (*p == '\0') + { + immediate_quit = 0; + if (kiodebug) + printf ("\nMatched\n"); + return; + } + } + else + { + if (!discard) + { + fwrite(string, 1, (p - 1) - string, stdout); + putchar((char)c); + fflush(stdout); + } + p = string; + } + } +} + +/* Keep discarding input until we see the MONITOR prompt. + + The convention for dealing with the prompt is that you + o give your command + o *then* wait for the prompt. + + Thus the last thing that a procedure does with the serial line + will be an expect_prompt(). Exception: monitor_resume does not + wait for the prompt, because the terminal is being handed over + to the inferior. However, the next thing which happens after that + is a monitor_wait which does wait for the prompt. + Note that this includes abnormal exit, e.g. error(). This is + necessary to prevent getting into states from which we can't + recover. */ +static void +expect_prompt(discard) + int discard; +{ +#if defined (LOG_FILE) + /* This is a convenient place to do this. The idea is to do it often + enough that we never lose much data if we terminate abnormally. */ + fflush(log_file); +#endif + expect (PROMPT, discard); +} + +/* Get a hex digit from the remote system & return its value. + If ignore_space is nonzero, ignore spaces (not newline, tab, etc). */ +static int +get_hex_digit(ignore_space) + int ignore_space; +{ + int ch; + while (1) + { + ch = readchar(timeout); + if (ch >= '0' && ch <= '9') + return ch - '0'; + else if (ch >= 'A' && ch <= 'F') + return ch - 'A' + 10; + else if (ch >= 'a' && ch <= 'f') + return ch - 'a' + 10; + else if (ch == ' ' && ignore_space) + ; + else + { + expect_prompt(1); + error("Invalid hex digit from remote system."); + } + } +} + +/* Get a byte from monitor and put it in *BYT. Accept any number + leading spaces. */ +static void +get_hex_byte (byt) + char *byt; +{ + int val; + + val = get_hex_digit (1) << 4; + val |= get_hex_digit (0); + *byt = val; +} + +/* Get N 32-bit words from remote, each preceded by a space, + and put them in registers starting at REGNO. */ +static void +get_hex_regs (n, regno) + int n; + int regno; +{ + long val; + int i; + + for (i = 0; i < n; i++) + { + int j; + + val = 0; + for (j = 0; j < 8; j++) + val = (val << 4) + get_hex_digit (j == 0); + supply_register (regno++, (char *) &val); + } +} + +/* This is called not only when we first attach, but also when the + user types "run" after having attached. */ +static void +monitor_create_inferior (execfile, args, env) + char *execfile; + char *args; + char **env; +{ + int entry_pt; + + if (args && *args) + error("Can't pass arguments to remote MONITOR process"); + + if (execfile == 0 || exec_bfd == 0) + error("No exec file specified"); + + entry_pt = (int) bfd_get_start_address (exec_bfd); + +#ifdef CREATE_INFERIOR_HOOK + CREATE_INFERIOR_HOOK (0); /* No process-ID */ +#endif +#ifdef LOG_FILE + fputs ("\nIn Create_inferior()", log_file); +#endif + +/* The "process" (board) is already stopped awaiting our commands, and + the program is already downloaded. We just set its PC and go. */ + + 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? */ + proceed ((CORE_ADDR)entry_pt, -1, 0); /* Let 'er rip... */ +} + +/* Open a connection to a remote debugger. + NAME is the filename used for communication. */ + +static int baudrate = 9600; +static char dev_name[100]; + +static void +rom68k_open(args, from_tty) + char *args; + int from_tty; +{ + int n; + char junk[100]; + TERMINAL sg; + + target_preopen(from_tty); + + n = sscanf(args, " %s %d %s", dev_name, &baudrate, junk); + + if (n != 2) + error("Bad arguments. Usage: target rom68k <device> <speed>\n\ +or target monitor <host> <port>\n"); + + monitor_close(0); + + monitor_desc = serial_open(dev_name); + + serial_setbaudrate(baudrate); + + ioctl (monitor_desc, TIOCGETP, &sg); + sg.sg_flags = O_CRDELAY | O_NLDELAY | ~(RAW); + ioctl (monitor_desc, TIOCSETN, &sg); + + push_target(&rom68k_ops); + push_monitor (&rom68k_cmds); + +#if defined (LOG_FILE) + log_file = fopen (LOG_FILE, "w"); + if (log_file == NULL) + perror_with_name (LOG_FILE); +#endif + + /* Hello? Are you there? */ + printf_monitor("\n"); /* CR wakes up monitor */ + + expect_prompt(1); + + if (from_tty) + printf("Remote %s connected to %s\n", target_shortname, + dev_name); +} + +static void +mon68_open(args, from_tty) + char *args; + int from_tty; +{ + int n; + char junk[100]; + + target_preopen(from_tty); + + n = sscanf(args, " %s %d %s", dev_name, &baudrate, junk); + + if (n != 2) + error("Bad arguments. Usage: target mon68 <device> <speed>\n\ +or target monitor <host> <port>\n"); + + monitor_close(0); + + monitor_desc = serial_open(dev_name); + + serial_setbaudrate(baudrate); + + push_target(&mon68_ops); + push_monitor (&mon68_cmds); + +#if defined (LOG_FILE) + log_file = fopen (LOG_FILE, "w"); + if (log_file == NULL) + perror_with_name (LOG_FILE); +#endif + + /* Hello? Are you there? */ + printf_monitor("\n"); /* CR wakes up dbug */ + + expect_prompt(1); + + if (from_tty) + printf("Remote %s connected to %s\n", target_shortname, + dev_name); +} + +static void +bug_open(args, from_tty) + char *args; + int from_tty; +{ + int n; + char junk[100]; + + target_preopen(from_tty); + + n = sscanf(args, " %s %d %s", dev_name, &baudrate, junk); + + if (n != 2) + error("Bad arguments. Usage: target bug <device> <speed>\n\ +or target monitor <host> <port>\n"); + + monitor_close(0); + + monitor_desc = serial_open(dev_name); + + serial_setbaudrate(baudrate); + + push_target(&bug_ops); + push_monitor (&bug_cmds); + +#if defined (LOG_FILE) + log_file = fopen (LOG_FILE, "w"); + if (log_file == NULL) + perror_with_name (LOG_FILE); +#endif + + /* Hello? Are you there? */ + printf_monitor("\r"); /* CR wakes up dbug */ + + expect_prompt(1); + + if (from_tty) + printf("Remote %s connected to %s\n", target_shortname, + dev_name); +} + +/* + * _close -- Close out all files and local state before this target loses control. + */ +static void +monitor_close (quitting) + int quitting; +{ + serial_close(); + +#if defined (LOG_FILE) + if (log_file) { + if (ferror(log_file)) + fprintf(stderr, "Error writing log file.\n"); + if (fclose(log_file) != 0) + fprintf(stderr, "Error closing log file.\n"); + } +#endif +} + +/* Terminate the open connection to the remote debugger. + Use this when you want to detach and do something else + with your gdb. */ +static void +monitor_detach (from_tty) + int from_tty; +{ + pop_target(); /* calls monitor_close to do the real work */ + if (from_tty) + printf ("Ending remote %s debugging\n", target_shortname); +} + +/* + * _resume -- Tell the remote machine to resume. + */ +static void +monitor_resume (step, sig) + int step, sig; +{ +#ifdef LOG_FILE + fprintf (log_file, "\nIn Resume (step=%d, sig=%d)\n", step, sig); +#endif + + if (step) + { + printf_monitor (STEP_CMD); + /* wait for the echo. */ + expect (STEP_CMD, 1); + } + else + { + printf_monitor (GO_CMD); + /* swallow the echo. */ + expect (GO_CMD, 1); + } +} + +/* + * _wait -- Wait until the remote machine stops, then return, + * storing status in status just as `wait' would. + */ + +static int +monitor_wait (status) + WAITTYPE *status; +{ + int old_timeout = timeout; +#ifdef LOG_FILE + fputs ("\nIn wait ()", log_file); +#endif + + WSETEXIT ((*status), 0); + + timeout = 0; /* Don't time out -- user program is running. */ + + expect_prompt(0); /* Wait for prompt, outputting extraneous text */ + + WSETSTOP ((*status), SIGTRAP); + + timeout = old_timeout; + + return 0; +} + +/* Return the name of register number regno in the form input and output by + monitor. Currently, register_names just happens to contain exactly what + monitor wants. Lets take advantage of that just as long as possible! */ + +static char * +get_reg_name (regno) + int regno; +{ + static char buf[50]; + const char *p; + char *b; + + b = buf; + + if (regno < 0) + return (""); + for (p = reg_names[regno]; *p; p++) + *b++ = toupper(*p); + *b = '\000'; + + return buf; +} + +/* read the remote registers into the block regs. */ + +static void +monitor_fetch_registers () +{ + int regno; + + /* yeah yeah, i know this is horribly inefficient. but it isn't done + very often... i'll clean it up later. */ + + for (regno = 0; regno <= PC_REGNUM; regno++) + monitor_fetch_register(regno); +} + +/* Fetch register REGNO, or all registers if REGNO is -1. + Returns errno value. */ +static void +monitor_fetch_register (regno) + int regno; +{ + int val, j; + +#ifdef LOG_FILE + fprintf (log_file, "\nIn Fetch Register (reg=%s)\n", get_reg_name (regno)); + fflush (log_file); +#endif + + if (regno < 0) + { + monitor_fetch_registers (); + } + else + { + char *name = get_reg_name (regno); + printf_monitor (GET_REG, name); + expect (name, 1); + expect (REG_DELIM, 1); + if (strcasecmp (name, "SR") == 0) + { + val = 0; + for (j = 0; j < 4; j++) + val = (val << 4) + get_hex_digit (j == 0); + supply_register (regno, (char *) &val); + } + else + { + get_hex_regs (1, regno); + } + if (CMD_END) + { + expect (CMD_DELIM); + printf_monitor (CMD_END); + } + expect_prompt (1); + } + return; +} + +/* Store the remote registers from the contents of the block REGS. */ + +static void +monitor_store_registers () +{ + int regno; + + for (regno = 0; regno <= PC_REGNUM; regno++) + monitor_store_register(regno); + + registers_changed (); +} + +/* Store register REGNO, or all if REGNO == 0. + return errno value. */ +static void +monitor_store_register (regno) + int regno; +{ +#ifdef LOG_FILE + fprintf (log_file, "\nIn Store_register (regno=%d)\n", regno); +#endif + if (regno == -1) + monitor_store_registers (); + else + { + if (kiodebug) + printf ("Setting register %s to 0x%x\n", get_reg_name (regno), read_register (regno)); + + printf_monitor (SET_REG, get_reg_name (regno), + read_register (regno)); + + expect_prompt (1); + } +} + +/* Get ready to modify the registers array. On machines which store + individual registers, this doesn't need to do anything. On machines + which store all the registers in one fell swoop, this makes sure + that registers contains all the registers from the program being + debugged. */ + +static void +monitor_prepare_to_store () +{ + /* Do nothing, since we can store individual regs */ +} + +static void +monitor_files_info () +{ + printf ("\tAttached to %s at %d baud.\n", + dev_name, baudrate); +} + +/* Copy LEN bytes of data from debugger memory at MYADDR + to inferior's memory at MEMADDR. Returns length moved. */ +static int +monitor_write_inferior_memory (memaddr, myaddr, len) + CORE_ADDR memaddr; + unsigned char *myaddr; + int len; +{ + int i; + char buf[10]; + +#ifdef LOG_FILE + fprintf (log_file, "\nIn Write_inferior_memory (memaddr=%x, len=%d)\n", memaddr, len); +#endif + for (i = 0; i < len; i++) + { + printf_monitor (MEM_SET_CMD, memaddr + i); + expect (sprintf (buf, MEM_PROMPT, memaddr + i), 1); + expect (CMD_DELIM); + printf_monitor ("%x", myaddr[i]); + if (kiodebug) + printf ("\nSet 0x%x to 0x%x\n", memaddr + i, myaddr[i]); + if (CMD_END) + { +/*** expect (sprintf (buf, MEM_PROMPT, memaddr + i +1), 1); + expect (CMD_DELIM); ***/ + printf_monitor (CMD_END); + } + expect_prompt (1); + } + return len; +} + +/* Read LEN bytes from inferior memory at MEMADDR. Put the result + at debugger address MYADDR. Returns length moved. */ +static int +monitor_read_inferior_memory(memaddr, myaddr, len) + CORE_ADDR memaddr; + char *myaddr; + int len; +{ + int i, j; + char buf[20]; + + /* Number of bytes read so far. */ + int count; + + /* Starting address of this pass. */ + unsigned long startaddr; + + /* Number of bytes to read in this pass. */ + int len_this_pass; + +#ifdef LOG_FILE + fprintf (log_file, "\nIn Read_inferior_memory (memaddr=%x, len=%d)\n", memaddr, len); +#endif + + /* Note that this code works correctly if startaddr is just less + than UINT_MAX (well, really CORE_ADDR_MAX if there was such a + thing). That is, something like + monitor_read_bytes (CORE_ADDR_MAX - 4, foo, 4) + works--it never adds len To memaddr and gets 0. */ + /* However, something like + monitor_read_bytes (CORE_ADDR_MAX - 3, foo, 4) + doesn't need to work. Detect it and give up if there's an attempt + to do that. */ + if (((memaddr - 1) + len) < memaddr) { + errno = EIO; + return 0; + } + + startaddr = memaddr; + count = 0; + while (count < len) + { + len_this_pass = 16; + if ((startaddr % 16) != 0) + len_this_pass -= startaddr % 16; + if (len_this_pass > (len - count)) + len_this_pass = (len - count); + if (kiodebug) + printf ("\nDisplay %d bytes at %x\n", len_this_pass, startaddr); + + for (i = 0; i < len_this_pass; i++) + { + printf_monitor (MEM_DIS_CMD, startaddr); + expect (sprintf(buf, MEM_PROMPT, startaddr), 1); + get_hex_byte (&myaddr[count++]); + if (kiodebug) + printf ("\nRead a 0x%x from 0x%x\n", myaddr[count-1], startaddr); + if (CMD_END) + { + expect (CMD_DELIM); + printf_monitor (CMD_END); + } + expect_prompt (1); + startaddr += 1; + } + } + return len; +} + +/* FIXME-someday! merge these two. */ +static int +monitor_xfer_inferior_memory (memaddr, myaddr, len, write, target) + CORE_ADDR memaddr; + char *myaddr; + int len; + int write; + struct target_ops *target; /* ignored */ +{ + if (write) + return monitor_write_inferior_memory (memaddr, myaddr, len); + else + return monitor_read_inferior_memory (memaddr, myaddr, len); +} + +static void +monitor_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. */ + +static void +monitor_mourn_inferior () +{ + remove_breakpoints (); + generic_mourn_inferior (); /* Do all the proper things now */ +} + +#define MAX_MONITOR_BREAKPOINTS 16 + +extern int memory_breakpoint_size; +static CORE_ADDR breakaddr[MAX_MONITOR_BREAKPOINTS] = {0}; + +static int +monitor_insert_breakpoint (addr, shadow) + CORE_ADDR addr; + char *shadow; +{ + int i; + +#ifdef LOG_FILE + fprintf (log_file, "\nIn Insert_breakpoint (addr=%x)\n", addr); +#endif + for (i = 0; i <= MAX_MONITOR_BREAKPOINTS; i++) + if (breakaddr[i] == 0) + { + breakaddr[i] = addr; + if (kiodebug) + printf ("Breakpoint at %x\n", addr); + monitor_read_inferior_memory(addr, shadow, memory_breakpoint_size); + printf_monitor(SET_BREAK_CMD, addr); + expect_prompt(1); + return 0; + } + + fprintf(stderr, "Too many breakpoints (> 16) for monitor\n"); + return 1; +} + +/* + * _remove_breakpoint -- Tell the monitor to remove a breakpoint + */ +static int +monitor_remove_breakpoint (addr, shadow) + CORE_ADDR addr; + char *shadow; +{ + int i; + +#ifdef LOG_FILE + fprintf (log_file, "\nIn Remove_breakpoint (addr=%x)\n", addr); +#endif + for (i = 0; i < MAX_MONITOR_BREAKPOINTS; i++) + if (breakaddr[i] == addr) + { + breakaddr[i] = 0; + /* some monitors remove breakpoints based on the address */ + if (strcasecmp (target_shortname, "bug") == 0) + printf_monitor(CLR_BREAK_CMD, addr); + else + printf_monitor(CLR_BREAK_CMD, i); + expect_prompt(1); + return 0; + } + + fprintf(stderr, "Can't find breakpoint associated with 0x%x\n", addr); + return 1; +} + +/* Load a file. This is usually an srecord, which is ascii. No + protocol, just sent line by line. */ + +#define DOWNLOAD_LINE_SIZE 100 +static void +monitor_load (arg) + char *arg; +{ + FILE *download; + char buf[DOWNLOAD_LINE_SIZE]; + int i, bytes_read; + + if (kiodebug) + printf ("Loading %s to monitor\n", arg); + + download = fopen (arg, "r"); + if (download == NULL) + { + error (sprintf (buf, "%s Does not exist", arg)); + return; + } + + printf_monitor (LOAD_CMD); +/* expect ("Waiting for S-records from host... ", 1); */ + + while (!feof (download)) + { + bytes_read = fread (buf, sizeof (char), DOWNLOAD_LINE_SIZE, download); + if (hashmark) + { + putchar ('.'); + fflush (stdout); + } + + if (!serial_write(buf, bytes_read)) { + fprintf(stderr, "serial_write failed: (while downloading) %s\n", safe_strerror(errno)); + break; + } + i = 0; + while (i++ <=200000) {} ; /* Ugly HACK, probably needs flow control */ + if (bytes_read < DOWNLOAD_LINE_SIZE) + { + if (!feof (download)) + error ("Only read %d bytes\n", bytes_read); + break; + } + } + + if (hashmark) + { + putchar ('\n'); + } + if (!feof (download)) + error ("Never got EOF while downloading"); + fclose (download); +} + +/* Put a command string, in args, out to MONITOR. Output from MONITOR is placed + on the users terminal until the prompt is seen. */ + +static void +monitor_command (args, fromtty) + char *args; + int fromtty; +{ +#ifdef LOG_FILE + fprintf (log_file, "\nIn command (args=%s)\n", args); +#endif + if (monitor_desc < 0) + error("monitor target not open."); + + if (!args) + error("Missing command."); + + printf_monitor("%s\r", args); + expect_prompt(0); +} + +/* Connect the user directly to MONITOR. This command acts just like the + 'cu' or 'tip' command. Use <CR>~. or <CR>~^D to break out. */ + +static struct ttystate ttystate; + +static void +cleanup_tty() +{ printf("\r\n[Exiting connect mode]\r\n"); + serial_restore(0, &ttystate); +} + +static void +connect_command (args, fromtty) + char *args; + int fromtty; +{ + fd_set readfds; + int numfds; + int c; + char cur_esc = 0; + + dont_repeat(); + + if (monitor_desc < 0) + error("monitor target not open."); + + if (args) + fprintf("This command takes no args. They have been ignored.\n"); + + printf("[Entering connect mode. Use ~. or ~^D to escape]\n"); + + serial_raw(0, &ttystate); + + make_cleanup(cleanup_tty, 0); + + FD_ZERO(&readfds); + + while (1) + { + do + { + FD_SET(0, &readfds); + FD_SET(monitor_desc, &readfds); + numfds = select(sizeof(readfds)*8, &readfds, 0, 0, 0); + } + while (numfds == 0); + + if (numfds < 0) + perror_with_name("select"); + + if (FD_ISSET(0, &readfds)) + { /* tty input, send to monitor */ + c = getchar(); + if (c < 0) + perror_with_name("connect"); + + printf_monitor("%c", c); + switch (cur_esc) + { + case 0: + if (c == '\r') + cur_esc = c; + break; + case '\r': + if (c == '~') + cur_esc = c; + else + cur_esc = 0; + break; + case '~': + if (c == '.' || c == '\004') + return; + else + cur_esc = 0; + } + } + + if (FD_ISSET(monitor_desc, &readfds)) + { + while (1) + { + c = readchar(0); + if (c < 0) + break; + putchar(c); + } + fflush(stdout); + } + } +} + +/* + * Define the monitor command strings. Since these are passed directly + * through to a printf style function, we need can include formatting + * strings. We also need a CR or LF on the end. + */ +struct monitor_ops rom68k_cmds = { + "go \r", /* execute or usually GO command */ + "go \r", /* continue command */ + "st \r", /* single step */ + "db %x\r", /* set a breakpoint */ + "cb %x\r", /* clear a breakpoint */ + "pm %x\r", /* set memory to a value */ + "pm %x\r", /* display memory */ + "-%08X ", /* prompt memory commands use */ + "pr %s %x\r", /* set a register */ + ": ", /* delimiter between registers */ + "pr %s\r", /* read a register */ + "dc \r", /* download command */ + "ROM68K :->", /* monitor command prompt */ + "=", /* end-of-command delimitor */ + ".\r" /* optional command terminator */ +}; + +struct monitor_ops bug_cmds = { + "go \r", /* execute or usually GO command */ + "go \r", /* continue command */ + "gn \r", /* single step */ + "br %x\r", /* set a breakpoint */ + "nobr %x\r", /* clear a breakpoint */ + "mm %x\r", /* set memory to a value */ + "mm %x\r", /* display memory */ + "%08X", /* prompt memory commands use */ + "rs %s %x\r", /* set a register */ + "=", /* delimiter between registers */ + "rm %s\r", /* read a register */ + "lo 0\r", /* download command */ + "Bug>", /* monitor command prompt */ + "? ", /* end-of-command delimitor */ + ".\r" /* optional command terminator */ +}; + +/* Define the target subroutine names */ +struct monitor_ops mon68_cmds = { + "", /* execute or usually GO command */ + "", /* continue command */ + "", /* single step */ + "", /* set a breakpoint */ + "", /* clear a breakpoint */ + "", /* set memory to a value */ + "", /* display memory */ + "", /* set a register */ + "", /* delimiter between registers */ + "", /* read a register */ + "", /* download command */ + ">", /* monitor command prompt */ + "", /* end-of-command delimitor */ + "" /* optional command terminator */ +}; + +struct target_ops rom68k_ops = { + "rom68k", + "Integrated System's ROM68K remote debug monitor", + "Use a remote computer running the ROM68K debug monitor, connected by a\n\ +serial line. Arguments are the name of the device for the serial line,\n\ +the speed to connect at in bits per second.", + rom68k_open, + monitor_close, + 0, + monitor_detach, + monitor_resume, + monitor_wait, + monitor_fetch_register, + monitor_store_register, + monitor_prepare_to_store, + monitor_xfer_inferior_memory, + monitor_files_info, + monitor_insert_breakpoint, + monitor_remove_breakpoint, /* Breakpoints */ + 0, + 0, + 0, + 0, + 0, /* Terminal handling */ + monitor_kill, + monitor_load, /* load */ + 0, /* lookup_symbol */ + monitor_create_inferior, + monitor_mourn_inferior, + 0, /* can_run */ + 0, /* notice_signals */ + process_stratum, + 0, /* next */ + 1, + 1, + 1, + 1, + 1, /* all mem, mem, stack, regs, exec */ + 0, + 0, /* Section pointers */ + OPS_MAGIC, /* Always the last thing */ +}; + +struct target_ops bug_ops = { + "bug", + "Motorola's BUG remote serial debug monitor", + "Use a remote computer running Motorola's BUG debug monitor, connected by a\n\ +serial line. Arguments are the name of the device for the serial line,\n\ +the speed to connect at in bits per second.", + bug_open, + monitor_close, + 0, + monitor_detach, + monitor_resume, + monitor_wait, + monitor_fetch_register, + monitor_store_register, + monitor_prepare_to_store, + monitor_xfer_inferior_memory, + monitor_files_info, + monitor_insert_breakpoint, + monitor_remove_breakpoint, /* Breakpoints */ + 0, + 0, + 0, + 0, + 0, /* Terminal handling */ + monitor_kill, + monitor_load, /* load */ + 0, /* lookup_symbol */ + monitor_create_inferior, + monitor_mourn_inferior, + 0, /* can_run */ + 0, /* notice_signals */ + process_stratum, + 0, /* next */ + 1, + 1, + 1, + 1, + 1, /* all mem, mem, stack, regs, exec */ + 0, + 0, /* Section pointers */ + OPS_MAGIC, /* Always the last thing */ +}; + +struct target_ops mon68_ops = { + "mon68", + "Intermetric's MON68 remote serial debug monitor", + "Use a remote computer running the MON68 debug monitor, connected by a\n\ +serial line. Arguments are the name of the device for the serial line,\n\ +the speed to connect at in bits per second.", + mon68_open, + monitor_close, + 0, + monitor_detach, + monitor_resume, + monitor_wait, + monitor_fetch_register, + monitor_store_register, + monitor_prepare_to_store, + monitor_xfer_inferior_memory, + monitor_files_info, + monitor_insert_breakpoint, + monitor_remove_breakpoint, /* Breakpoints */ + 0, + 0, + 0, + 0, + 0, /* Terminal handling */ + monitor_kill, + monitor_load, /* load */ + 0, /* lookup_symbol */ + monitor_create_inferior, + monitor_mourn_inferior, + 0, /* can_run */ + 0, /* notice_signals */ + process_stratum, + 0, /* next */ + 1, + 1, + 1, + 1, + 1, /* all mem, mem, stack, regs, exec */ + 0, + 0, /* Section pointers */ + OPS_MAGIC, /* Always the last thing */ +}; + +void +_initialize_remote_monitors () +{ + add_show_from_set ( + add_set_cmd ("remotedebug", no_class, var_boolean, + (char *)&kiodebug, + "Set debugging of I/O to a serial based Monitor.\n\ +When enabled, debugging info is displayed.", + &setlist), + &showlist); + add_show_from_set ( + add_set_cmd ("hash", no_class, var_boolean, + (char *)&hashmark, + "Set display of activity while downloading a file.\n\ +When enabled, a period \'.\' is displayed.", + &setlist), + &showlist); + + /* generic monitor command */ + add_com ("monitor <command>", class_obscure, monitor_command, + "Send a command to the debug monitor."); + add_com ("connect", class_obscure, connect_command, + "Connect the terminal directly up to a serial based command monitor.\n\ +Use <CR>~. or <CR>~^D to break out."); + + add_target (&rom68k_ops); +/* add_target (&mon68_ops); */ + add_target (&bug_ops); +} |