diff options
Diffstat (limited to 'gdb/remote-os9k.c')
| -rw-r--r-- | gdb/remote-os9k.c | 1234 |
1 files changed, 1234 insertions, 0 deletions
diff --git a/gdb/remote-os9k.c b/gdb/remote-os9k.c new file mode 100644 index 0000000..0a703eb --- /dev/null +++ b/gdb/remote-os9k.c @@ -0,0 +1,1234 @@ +/* Remote debugging interface for boot monitors, for GDB. + + Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1998, 1999, + 2000, 2001, 2002 Free Software Foundation, Inc. + + 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., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, 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 a different situation-- + having a PC running os9000 hook up with a unix machine with + a serial line, and running ctty com2 on the PC. os9000 has a debug + monitor called ROMBUG running. 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 'ROMBUG', which + We communicate with ROMBUG via a direct serial line, the network version + of ROMBUG is not available yet. + */ + +/* FIXME This file needs to be rewritten if it's to work again, either + to self-contained or to use the new monitor interface. */ + +#include "defs.h" +#include "gdbcore.h" +#include "target.h" +#include "gdb_string.h" +#include <sys/types.h> +#include "command.h" +#include "serial.h" +#include "monitor.h" +#include "remote-utils.h" +#include "symtab.h" +#include "symfile.h" +#include "objfiles.h" +#include "gdb-stabs.h" +#include "regcache.h" + +struct cmd_list_element *showlist; +extern struct target_ops rombug_ops; /* Forward declaration */ +extern struct monitor_ops rombug_cmds; /* Forward declaration */ +extern struct cmd_list_element *setlist; +extern struct cmd_list_element *unsetlist; +extern int attach_flag; + +static void rombug_close (); +static void rombug_fetch_register (); +static void rombug_fetch_registers (); +static void rombug_store_register (); +#if 0 +static int sr_get_debug (); /* flag set by "set remotedebug" */ +#endif +static int hashmark; /* flag set by "set hash" */ +static int rombug_is_open = 0; + +/* FIXME: Replace with sr_get_debug (). */ +#define LOG_FILE "monitor.log" +FILE *log_file; +static int monitor_log = 0; +static int tty_xon = 0; +static int tty_xoff = 0; + +static int timeout = 10; +static int is_trace_mode = 0; +/* Descriptor for I/O to remote machine. Initialize it to NULL */ +static struct serial *monitor_desc = NULL; + +static CORE_ADDR bufaddr = 0; +static int buflen = 0; +static char readbuf[16]; + +/* Send data to monitor. Works just like printf. */ +static void +printf_monitor (char *pattern,...) +{ + va_list args; + char buf[200]; + int i; + + va_start (args, pattern); + + vsprintf (buf, pattern, args); + va_end (args); + + if (serial_write (monitor_desc, buf, strlen (buf))) + fprintf_unfiltered (gdb_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 (int timeout) +{ + int c; + + c = serial_readchar (monitor_desc, timeout); + + if (sr_get_debug ()) + putchar (c & 0x7f); + + if (monitor_log && isascii (c)) + putc (c & 0x7f, log_file); + + if (c >= 0) + return c & 0x7f; + + if (c == SERIAL_TIMEOUT) + { + 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 (char *string, int discard) +{ + char *p = string; + int c; + + if (sr_get_debug ()) + printf ("Expecting \"%s\"\n", string); + + immediate_quit++; + while (1) + { + c = readchar (timeout); + if (!isascii (c)) + continue; + if (c == *p++) + { + if (*p == '\0') + { + immediate_quit--; + if (sr_get_debug ()) + 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 ROMBUG 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: rombug_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 rombug_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 (int discard) +{ + if (monitor_log) + /* 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); + + if (is_trace_mode) + { + expect ("trace", discard); + } + else + { + 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 (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 (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 (int n, int regno) +{ + long val; + int i; + unsigned char b; + + for (i = 0; i < n; i++) + { + int j; + + val = 0; + for (j = 0; j < 4; j++) + { + get_hex_byte (&b); + if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) + val = (val << 8) + b; + else + val = val + (b << (j * 8)); + } + 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 +rombug_create_inferior (char *execfile, char *args, char **env) +{ + int entry_pt; + + if (args && *args) + error ("Can't pass arguments to remote ROMBUG process"); + + if (execfile == 0 || exec_bfd == 0) + error ("No executable file specified"); + + entry_pt = (int) bfd_get_start_address (exec_bfd); + + if (monitor_log) + fputs ("\nIn Create_inferior()", log_file); + + +/* The "process" (board) is already stopped awaiting our commands, and + the program is already downloaded. We just set its PC and go. */ + + init_wait_for_inferior (); + proceed ((CORE_ADDR) entry_pt, TARGET_SIGNAL_DEFAULT, 0); +} + +/* Open a connection to a remote debugger. + NAME is the filename used for communication. */ + +static char dev_name[100]; + +static void +rombug_open (char *args, int from_tty) +{ + if (args == NULL) + error ("Use `target RomBug DEVICE-NAME' to use a serial port, or \n\ +`target RomBug HOST-NAME:PORT-NUMBER' to use a network connection."); + + target_preopen (from_tty); + + if (rombug_is_open) + unpush_target (&rombug_ops); + + strcpy (dev_name, args); + monitor_desc = serial_open (dev_name); + if (monitor_desc == NULL) + perror_with_name (dev_name); + + /* if baud rate is set by 'set remotebaud' */ + if (serial_setbaudrate (monitor_desc, sr_get_baud_rate ())) + { + serial_close (monitor_desc); + perror_with_name ("RomBug"); + } + serial_raw (monitor_desc); + if (tty_xon || tty_xoff) + { + struct hardware_ttystate + { + struct termios t; + } + *tty_s; + + tty_s = (struct hardware_ttystate *) serial_get_tty_state (monitor_desc); + if (tty_xon) + tty_s->t.c_iflag |= IXON; + if (tty_xoff) + tty_s->t.c_iflag |= IXOFF; + serial_set_tty_state (monitor_desc, (serial_ttystate) tty_s); + } + + rombug_is_open = 1; + + log_file = fopen (LOG_FILE, "w"); + if (log_file == NULL) + perror_with_name (LOG_FILE); + + push_monitor (&rombug_cmds); + printf_monitor ("\r"); /* CR wakes up monitor */ + expect_prompt (1); + push_target (&rombug_ops); + attach_flag = 1; + + if (from_tty) + printf ("Remote %s connected to %s\n", target_shortname, + dev_name); + + rombug_fetch_registers (); + + printf_monitor ("ov e \r"); + expect_prompt (1); + bufaddr = 0; + buflen = 0; +} + +/* + * Close out all files and local state before this target loses control. + */ + +static void +rombug_close (int quitting) +{ + if (rombug_is_open) + { + serial_close (monitor_desc); + monitor_desc = NULL; + rombug_is_open = 0; + } + + if (log_file) + { + if (ferror (log_file)) + fprintf_unfiltered (gdb_stderr, "Error writing log file.\n"); + if (fclose (log_file) != 0) + fprintf_unfiltered (gdb_stderr, "Error closing log file.\n"); + log_file = 0; + } +} + +int +rombug_link (char *mod_name, CORE_ADDR *text_reloc) +{ + int i, j; + unsigned long val; + unsigned char b; + + printf_monitor ("l %s \r", mod_name); + expect_prompt (1); + printf_monitor (".r \r"); + expect (REG_DELIM, 1); + for (i = 0; i <= 7; i++) + { + val = 0; + for (j = 0; j < 4; j++) + { + get_hex_byte (&b); + val = (val << 8) + b; + } + } + expect_prompt (1); + *text_reloc = val; + return 1; +} + +/* Terminate the open connection to the remote debugger. + Use this when you want to detach and do something else + with your gdb. */ +static void +rombug_detach (int from_tty) +{ + if (attach_flag) + { + printf_monitor (GO_CMD); + attach_flag = 0; + } + pop_target (); /* calls rombug_close to do the real work */ + if (from_tty) + printf ("Ending remote %s debugging\n", target_shortname); +} + +/* + * Tell the remote machine to resume. + */ +static void +rombug_resume (ptid_t ptid, int step, enum target_signal sig) +{ + if (monitor_log) + fprintf (log_file, "\nIn Resume (step=%d, sig=%d)\n", step, sig); + + if (step) + { + is_trace_mode = 1; + printf_monitor (STEP_CMD); + /* wait for the echo. ** + expect (STEP_CMD, 1); + */ + } + else + { + printf_monitor (GO_CMD); + /* swallow the echo. ** + expect (GO_CMD, 1); + */ + } + bufaddr = 0; + buflen = 0; +} + +/* + * Wait until the remote machine stops, then return, + * storing status in status just as `wait' would. + */ + +static ptid * +rombug_wait (ptid_t ptid, struct target_waitstatus *status) +{ + int old_timeout = timeout; + struct section_offsets *offs; + CORE_ADDR addr, pc; + struct obj_section *obj_sec; + + if (monitor_log) + fputs ("\nIn wait ()", log_file); + + status->kind = TARGET_WAITKIND_EXITED; + status->value.integer = 0; + + timeout = -1; /* Don't time out -- user program is running. */ + expect ("eax:", 0); /* output any message before register display */ + expect_prompt (1); /* Wait for prompt, outputting extraneous text */ + + status->kind = TARGET_WAITKIND_STOPPED; + status->value.sig = TARGET_SIGNAL_TRAP; + timeout = old_timeout; + rombug_fetch_registers (); + bufaddr = 0; + buflen = 0; + pc = read_register (PC_REGNUM); + addr = read_register (DATABASE_REG); + obj_sec = find_pc_section (pc); + if (obj_sec != NULL) + { + if (obj_sec->objfile != symfile_objfile) + new_symfile_objfile (obj_sec->objfile, 1, 0); + offs = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS); + memcpy (offs, symfile_objfile->section_offsets, SIZEOF_SECTION_OFFSETS); + offs->offsets[SECT_OFF_DATA (symfile_objfile)] = addr; + offs->offsets[SECT_OFF_BSS (symfile_objfile)] = addr; + + objfile_relocate (symfile_objfile, offs); + } + + return inferior_ptid; +} + +/* 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 (int regno) +{ + static char buf[50]; + char *p; + char *b; + + b = buf; + + if (regno < 0) + return (""); +/* + for (p = REGISTER_NAME (regno); *p; p++) + *b++ = toupper(*p); + *b = '\000'; + */ + p = (char *) REGISTER_NAME (regno); + return p; +/* + return buf; + */ +} + +/* read the remote registers into the block regs. */ + +static void +rombug_fetch_registers (void) +{ + int regno, j, i; + long val; + unsigned char b; + + printf_monitor (GET_REG); + expect ("eax:", 1); + expect ("\n", 1); + get_hex_regs (1, 0); + get_hex_regs (1, 3); + get_hex_regs (1, 1); + get_hex_regs (1, 2); + get_hex_regs (1, 6); + get_hex_regs (1, 7); + get_hex_regs (1, 5); + get_hex_regs (1, 4); + for (regno = 8; regno <= 15; regno++) + { + expect (REG_DELIM, 1); + if (regno >= 8 && regno <= 13) + { + val = 0; + for (j = 0; j < 2; j++) + { + get_hex_byte (&b); + if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) + val = (val << 8) + b; + else + val = val + (b << (j * 8)); + } + + if (regno == 8) + i = 10; + if (regno >= 9 && regno <= 12) + i = regno + 3; + if (regno == 13) + i = 11; + supply_register (i, (char *) &val); + } + else if (regno == 14) + { + get_hex_regs (1, PC_REGNUM); + } + else if (regno == 15) + { + get_hex_regs (1, 9); + } + else + { + val = 0; + supply_register (regno, (char *) &val); + } + } + is_trace_mode = 0; + expect_prompt (1); +} + +/* Fetch register REGNO, or all registers if REGNO is -1. + Returns errno value. */ +static void +rombug_fetch_register (int regno) +{ + int val, j; + unsigned char b; + + if (monitor_log) + { + fprintf (log_file, "\nIn Fetch Register (reg=%s)\n", get_reg_name (regno)); + fflush (log_file); + } + + if (regno < 0) + { + rombug_fetch_registers (); + } + else + { + char *name = get_reg_name (regno); + printf_monitor (GET_REG); + if (regno >= 10 && regno <= 15) + { + expect ("\n", 1); + expect ("\n", 1); + expect (name, 1); + expect (REG_DELIM, 1); + val = 0; + for (j = 0; j < 2; j++) + { + get_hex_byte (&b); + if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG) + val = (val << 8) + b; + else + val = val + (b << (j * 8)); + } + supply_register (regno, (char *) &val); + } + else if (regno == 8 || regno == 9) + { + expect ("\n", 1); + expect ("\n", 1); + expect ("\n", 1); + expect (name, 1); + expect (REG_DELIM, 1); + get_hex_regs (1, regno); + } + else + { + expect (name, 1); + expect (REG_DELIM, 1); + expect ("\n", 1); + get_hex_regs (1, 0); + get_hex_regs (1, 3); + get_hex_regs (1, 1); + get_hex_regs (1, 2); + get_hex_regs (1, 6); + get_hex_regs (1, 7); + get_hex_regs (1, 5); + get_hex_regs (1, 4); + } + expect_prompt (1); + } + return; +} + +/* Store the remote registers from the contents of the block REGS. */ + +static void +rombug_store_registers (void) +{ + int regno; + + for (regno = 0; regno <= PC_REGNUM; regno++) + rombug_store_register (regno); + + registers_changed (); +} + +/* Store register REGNO, or all if REGNO == 0. + return errno value. */ +static void +rombug_store_register (int regno) +{ + char *name; + + if (monitor_log) + fprintf (log_file, "\nIn Store_register (regno=%d)\n", regno); + + if (regno == -1) + rombug_store_registers (); + else + { + if (sr_get_debug ()) + printf ("Setting register %s to 0x%x\n", get_reg_name (regno), read_register (regno)); + + name = get_reg_name (regno); + if (name == 0) + return; + printf_monitor (SET_REG, name, read_register (regno)); + + is_trace_mode = 0; + 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 +rombug_prepare_to_store (void) +{ + /* Do nothing, since we can store individual regs */ +} + +static void +rombug_files_info (void) +{ + printf ("\tAttached to %s at %d baud.\n", + dev_name, sr_get_baud_rate ()); +} + +/* Copy LEN bytes of data from debugger memory at MYADDR + to inferior's memory at MEMADDR. Returns length moved. */ +static int +rombug_write_inferior_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len) +{ + int i; + char buf[10]; + + if (monitor_log) + fprintf (log_file, "\nIn Write_inferior_memory (memaddr=%x, len=%d)\n", memaddr, len); + + printf_monitor (MEM_SET_CMD, memaddr); + for (i = 0; i < len; i++) + { + expect (CMD_DELIM, 1); + printf_monitor ("%x \r", myaddr[i]); + if (sr_get_debug ()) + printf ("\nSet 0x%x to 0x%x\n", memaddr + i, myaddr[i]); + } + expect (CMD_DELIM, 1); + if (CMD_END) + printf_monitor (CMD_END); + is_trace_mode = 0; + expect_prompt (1); + + bufaddr = 0; + buflen = 0; + return len; +} + +/* Read LEN bytes from inferior memory at MEMADDR. Put the result + at debugger address MYADDR. Returns length moved. */ +static int +rombug_read_inferior_memory (CORE_ADDR memaddr, char *myaddr, int len) +{ + int i, j; + + /* 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; + + if (monitor_log) + fprintf (log_file, "\nIn Read_inferior_memory (memaddr=%x, len=%d)\n", memaddr, len); + + /* 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 + rombug_read_bytes (CORE_ADDR_MAX - 4, foo, 4) + works--it never adds len To memaddr and gets 0. */ + /* However, something like + rombug_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; + } + if (bufaddr <= memaddr && (memaddr + len) <= (bufaddr + buflen)) + { + memcpy (myaddr, &readbuf[memaddr - bufaddr], len); + return len; + } + + 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 (sr_get_debug ()) + printf ("\nDisplay %d bytes at %x\n", len_this_pass, startaddr); + + printf_monitor (MEM_DIS_CMD, startaddr, 8); + expect ("- ", 1); + for (i = 0; i < 16; i++) + { + get_hex_byte (&readbuf[i]); + } + bufaddr = startaddr; + buflen = 16; + memcpy (&myaddr[count], readbuf, len_this_pass); + count += len_this_pass; + startaddr += len_this_pass; + expect (CMD_DELIM, 1); + } + if (CMD_END) + printf_monitor (CMD_END); + is_trace_mode = 0; + expect_prompt (1); + + return len; +} + +/* Transfer LEN bytes between GDB address MYADDR and target address + MEMADDR. If WRITE is non-zero, transfer them to the target, + otherwise transfer them from the target. TARGET is unused. + + Returns the number of bytes transferred. */ + +static int +rombug_xfer_inferior_memory (CORE_ADDR memaddr, char *myaddr, int len, + int write, struct mem_attrib *attrib, + struct target_ops *target) +{ + if (write) + return rombug_write_inferior_memory (memaddr, myaddr, len); + else + return rombug_read_inferior_memory (memaddr, myaddr, len); +} + +static void +rombug_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. */ + +static void +rombug_mourn_inferior (void) +{ + remove_breakpoints (); + generic_mourn_inferior (); /* Do all the proper things now */ +} + +#define MAX_MONITOR_BREAKPOINTS 16 + +static CORE_ADDR breakaddr[MAX_MONITOR_BREAKPOINTS] = +{0}; + +static int +rombug_insert_breakpoint (CORE_ADDR addr, char *shadow) +{ + int i; + CORE_ADDR bp_addr = addr; + int bp_size = 0; + + if (monitor_log) + fprintf (log_file, "\nIn Insert_breakpoint (addr=%x)\n", addr); + BREAKPOINT_FROM_PC (&bp_addr, &bp_size); + + for (i = 0; i <= MAX_MONITOR_BREAKPOINTS; i++) + if (breakaddr[i] == 0) + { + breakaddr[i] = addr; + if (sr_get_debug ()) + printf ("Breakpoint at %x\n", addr); + rombug_read_inferior_memory (bp_addr, shadow, bp_size); + printf_monitor (SET_BREAK_CMD, addr); + is_trace_mode = 0; + expect_prompt (1); + return 0; + } + + fprintf_unfiltered (gdb_stderr, "Too many breakpoints (> 16) for monitor\n"); + return 1; +} + +/* + * _remove_breakpoint -- Tell the monitor to remove a breakpoint + */ +static int +rombug_remove_breakpoint (CORE_ADDR addr, char *shadow) +{ + int i; + + if (monitor_log) + fprintf (log_file, "\nIn Remove_breakpoint (addr=%x)\n", addr); + + for (i = 0; i < MAX_MONITOR_BREAKPOINTS; i++) + if (breakaddr[i] == addr) + { + breakaddr[i] = 0; + printf_monitor (CLR_BREAK_CMD, addr); + is_trace_mode = 0; + expect_prompt (1); + return 0; + } + + fprintf_unfiltered (gdb_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 +rombug_load (char *arg) +{ +/* this part comment out for os9* */ +#if 0 + FILE *download; + char buf[DOWNLOAD_LINE_SIZE]; + int i, bytes_read; + + if (sr_get_debug ()) + 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 (monitor_desc, buf, bytes_read)) + { + fprintf_unfiltered (gdb_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); +#endif /* 0 */ +} + +/* 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 +rombug_command (char *args, int fromtty) +{ + if (monitor_desc == NULL) + error ("monitor target not open."); + + if (monitor_log) + fprintf (log_file, "\nIn command (args=%s)\n", args); + + if (!args) + error ("Missing command."); + + printf_monitor ("%s\r", args); + expect_prompt (0); +} + +#if 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 (void) +{ + printf ("\r\n[Exiting connect mode]\r\n"); + /*serial_restore(0, &ttystate); */ +} + +static void +connect_command (char *args, int fromtty) +{ + fd_set readfds; + int numfds; + int c; + char cur_esc = 0; + + dont_repeat (); + + if (monitor_desc == NULL) + 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 (deprecated_serial_fd (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 (deprecated_serial_fd (monitor_desc), &readfds)) + { + while (1) + { + c = readchar (0); + if (c < 0) + break; + putchar (c); + } + fflush (stdout); + } + } +} +#endif + +/* + * 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. + */ +#warning FIXME: monitor interface pattern strings, stale struct decl +struct monitor_ops rombug_cmds = +{ + "g \r", /* execute or usually GO command */ + "g \r", /* continue command */ + "t \r", /* single step */ + "b %x\r", /* set a breakpoint */ + "k %x\r", /* clear a breakpoint */ + "c %x\r", /* set memory to a value */ + "d %x %d\r", /* display memory */ + "$%08X", /* prompt memory commands use */ + ".%s %x\r", /* set a register */ + ":", /* delimiter between registers */ + ". \r", /* read a register */ + "mf \r", /* download command */ + "RomBug: ", /* monitor command prompt */ + ": ", /* end-of-command delimitor */ + ".\r" /* optional command terminator */ +}; + +struct target_ops rombug_ops; + +static void +init_rombug_ops (void) +{ + rombug_ops.to_shortname = "rombug"; + rombug_ops.to_longname = "Microware's ROMBUG debug monitor"; + rombug_ops.to_doc = "Use a remote computer running the ROMBUG debug monitor.\n\ +Specify the serial device it is connected to (e.g. /dev/ttya).", + rombug_ops.to_open = rombug_open; + rombug_ops.to_close = rombug_close; + rombug_ops.to_attach = 0; + rombug_ops.to_post_attach = NULL; + rombug_ops.to_require_attach = NULL; + rombug_ops.to_detach = rombug_detach; + rombug_ops.to_require_detach = NULL; + rombug_ops.to_resume = rombug_resume; + rombug_ops.to_wait = rombug_wait; + rombug_ops.to_post_wait = NULL; + rombug_ops.to_fetch_registers = rombug_fetch_register; + rombug_ops.to_store_registers = rombug_store_register; + rombug_ops.to_prepare_to_store = rombug_prepare_to_store; + rombug_ops.to_xfer_memory = rombug_xfer_inferior_memory; + rombug_ops.to_files_info = rombug_files_info; + rombug_ops.to_insert_breakpoint = rombug_insert_breakpoint; + rombug_ops.to_remove_breakpoint = rombug_remove_breakpoint; /* Breakpoints */ + rombug_ops.to_terminal_init = 0; + rombug_ops.to_terminal_inferior = 0; + rombug_ops.to_terminal_ours_for_output = 0; + rombug_ops.to_terminal_ours = 0; + rombug_ops.to_terminal_info = 0; /* Terminal handling */ + rombug_ops.to_kill = rombug_kill; + rombug_ops.to_load = rombug_load; /* load */ + rombug_ops.to_lookup_symbol = rombug_link; /* lookup_symbol */ + rombug_ops.to_create_inferior = rombug_create_inferior; + rombug_ops.to_post_startup_inferior = NULL; + rombug_ops.to_acknowledge_created_inferior = NULL; + rombug_ops.to_clone_and_follow_inferior = NULL; + rombug_ops.to_post_follow_inferior_by_clone = NULL; + rombug_ops.to_insert_fork_catchpoint = NULL; + rombug_ops.to_remove_fork_catchpoint = NULL; + rombug_ops.to_insert_vfork_catchpoint = NULL; + rombug_ops.to_remove_vfork_catchpoint = NULL; + rombug_ops.to_has_forked = NULL; + rombug_ops.to_has_vforked = NULL; + rombug_ops.to_can_follow_vfork_prior_to_exec = NULL; + rombug_ops.to_post_follow_vfork = NULL; + rombug_ops.to_insert_exec_catchpoint = NULL; + rombug_ops.to_remove_exec_catchpoint = NULL; + rombug_ops.to_has_execd = NULL; + rombug_ops.to_reported_exec_events_per_exec_call = NULL; + rombug_ops.to_has_exited = NULL; + rombug_ops.to_mourn_inferior = rombug_mourn_inferior; + rombug_ops.to_can_run = 0; /* can_run */ + rombug_ops.to_notice_signals = 0; /* notice_signals */ + rombug_ops.to_thread_alive = 0; + rombug_ops.to_stop = 0; /* to_stop */ + rombug_ops.to_pid_to_exec_file = NULL; + rombug_ops.to_stratum = process_stratum; + rombug_ops.DONT_USE = 0; /* next */ + rombug_ops.to_has_all_memory = 1; + rombug_ops.to_has_memory = 1; + rombug_ops.to_has_stack = 1; + rombug_ops.to_has_registers = 1; + rombug_ops.to_has_execution = 1; /* has execution */ + rombug_ops.to_sections = 0; + rombug_ops.to_sections_end = 0; /* Section pointers */ + rombug_ops.to_magic = OPS_MAGIC; /* Always the last thing */ +} + +void +_initialize_remote_os9k (void) +{ + init_rombug_ops (); + add_target (&rombug_ops); + + add_show_from_set ( + add_set_cmd ("hash", no_class, var_boolean, (char *) &hashmark, + "Set display of activity while downloading a file.\nWhen enabled, a period \'.\' is displayed.", + &setlist), + &showlist); + + add_show_from_set ( + add_set_cmd ("timeout", no_class, var_zinteger, + (char *) &timeout, + "Set timeout in seconds for remote MIPS serial I/O.", + &setlist), + &showlist); + + add_show_from_set ( + add_set_cmd ("remotelog", no_class, var_zinteger, + (char *) &monitor_log, + "Set monitor activity log on(=1) or off(=0).", + &setlist), + &showlist); + + add_show_from_set ( + add_set_cmd ("remotexon", no_class, var_zinteger, + (char *) &tty_xon, + "Set remote tty line XON control", + &setlist), + &showlist); + + add_show_from_set ( + add_set_cmd ("remotexoff", no_class, var_zinteger, + (char *) &tty_xoff, + "Set remote tty line XOFF control", + &setlist), + &showlist); + + add_com ("rombug <command>", class_obscure, rombug_command, + "Send a command to the debug monitor."); +#if 0 + add_com ("connect", class_obscure, connect_command, + "Connect the terminal directly up to a serial based command monitor.\nUse <CR>~. or <CR>~^D to break out."); +#endif +} |