/* Remote debugging interface for Hitachi HMS Monitor Version 1.0
- Copyright 1992 Free Software Foundation, Inc.
+ Copyright 1995, 1996, 1998, 1999, 2000, 2001
+ Free Software Foundation, Inc.
Contributed by Cygnus Support. Written by Steve Chamberlain
(sac@cygnus.com).
-This file is part of GDB.
+ 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 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.
+ 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. */
+ 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. */
#include "defs.h"
-#include "inferior.h"
-#include "wait.h"
-#include "value.h"
-#include <string.h>
-#include <ctype.h>
-#include <fcntl.h>
-#include <signal.h>
-#include <setjmp.h>
-#include <errno.h>
-#include "terminal.h"
-#include "target.h"
#include "gdbcore.h"
+#include "target.h"
+#include "monitor.h"
+#include "serial.h"
+#include "regcache.h"
-/* External data declarations */
-extern int stop_soon_quietly; /* for wait_for_inferior */
-
-/* Forward data declarations */
-extern struct target_ops hms_ops; /* Forward declaration */
-
-/* Forward function declarations */
-static void hms_fetch_registers ();
-static int hms_store_registers ();
-static void hms_close ();
-static int hms_clear_breakpoints();
-
-extern struct target_ops hms_ops;
-
-static int quiet = 1;
-
-#ifdef DEBUG
-# define DENTER(NAME) if (!quiet) (printf_filtered("Entering %s\n",NAME), fflush(stdout))
-# define DEXIT(NAME) if (!quiet) (printf_filtered("Exiting %s\n",NAME), fflush(stdout))
-#else
-# define DENTER(NAME)
-# define DEXIT(NAME)
-#endif
-
-
-/***********************************************************************/
-/* Caching stuff stolen from remote-nindy.c */
-
-/* The data cache records all the data read from the remote machine
- since the last time it stopped.
-
- Each cache block holds LINE_SIZE bytes of data
- starting at a multiple-of-LINE_SIZE address. */
-
-
-#define LINE_SIZE_POWER 4
-#define LINE_SIZE (1<<LINE_SIZE_POWER) /* eg 1<<3 == 8 */
-#define LINE_SIZE_MASK ((LINE_SIZE-1)) /* eg 7*2+1= 111*/
-#define DCACHE_SIZE 64 /* Number of cache blocks */
-#define XFORM(x) ((x&LINE_SIZE_MASK)>>2)
-struct dcache_block {
- struct dcache_block *next, *last;
- unsigned int addr; /* Address for which data is recorded. */
- int data[LINE_SIZE/sizeof(int)];
-};
-
-struct dcache_block dcache_free, dcache_valid;
-
-/* Free all the data cache blocks, thus discarding all cached data. */
-static
-void
-dcache_flush ()
-{
- register struct dcache_block *db;
-
- while ((db = dcache_valid.next) != &dcache_valid)
- {
- remque (db);
- insque (db, &dcache_free);
- }
-}
-
-/*
- * If addr is present in the dcache, return the address of the block
- * containing it.
- */
-static
-struct dcache_block *
-dcache_hit (addr)
- unsigned int addr;
-{
- register struct dcache_block *db;
-
- if (addr & 3)
- abort ();
-
- /* Search all cache blocks for one that is at this address. */
- db = dcache_valid.next;
- while (db != &dcache_valid)
- {
- if ((addr & ~LINE_SIZE_MASK)== db->addr)
- return db;
- db = db->next;
- }
- return NULL;
-}
-
-/* Return the int data at address ADDR in dcache block DC. */
-static
-int
-dcache_value (db, addr)
- struct dcache_block *db;
- unsigned int addr;
-{
- if (addr & 3)
- abort ();
- return (db->data[XFORM(addr)]);
-}
-
-/* Get a free cache block, put or keep it on the valid list,
- and return its address. The caller should store into the block
- the address and data that it describes, then remque it from the
- free list and insert it into the valid list. This procedure
- prevents errors from creeping in if a ninMemGet is interrupted
- (which used to put garbage blocks in the valid list...). */
-static
-struct dcache_block *
-dcache_alloc ()
-{
- register struct dcache_block *db;
-
- if ((db = dcache_free.next) == &dcache_free)
- {
- /* If we can't get one from the free list, take last valid and put
- it on the free list. */
- db = dcache_valid.last;
- remque (db);
- insque (db, &dcache_free);
- }
-
- remque (db);
- insque (db, &dcache_valid);
- return (db);
-}
-
-/* Return the contents of the word at address ADDR in the remote machine,
- using the data cache. */
-static
-int
-dcache_fetch (addr)
- CORE_ADDR addr;
-{
- register struct dcache_block *db;
-
- db = dcache_hit (addr);
- if (db == 0)
- {
- db = dcache_alloc ();
- immediate_quit++;
- hms_read_inferior_memory(addr & ~LINE_SIZE_MASK, (unsigned char *)db->data, LINE_SIZE);
- immediate_quit--;
- db->addr = addr & ~LINE_SIZE_MASK;
- remque (db); /* Off the free list */
- insque (db, &dcache_valid); /* On the valid list */
- }
- return (dcache_value (db, addr));
-}
-
-/* Write the word at ADDR both in the data cache and in the remote machine. */
-static void
-dcache_poke (addr, data)
- CORE_ADDR addr;
- int data;
-{
- register struct dcache_block *db;
-
- /* First make sure the word is IN the cache. DB is its cache block. */
- db = dcache_hit (addr);
- if (db == 0)
- {
- db = dcache_alloc ();
- immediate_quit++;
- hms_write_inferior_memory(addr & ~LINE_SIZE_MASK, (unsigned char *)db->data, LINE_SIZE);
- immediate_quit--;
- db->addr = addr & ~LINE_SIZE_MASK;
- remque (db); /* Off the free list */
- insque (db, &dcache_valid); /* On the valid list */
- }
-
- /* Modify the word in the cache. */
- db->data[XFORM(addr)] = data;
-
- /* Send the changed word. */
- immediate_quit++;
- hms_write_inferior_memory(addr, (unsigned char *)&data, 4);
- immediate_quit--;
-}
-
-/* The cache itself. */
-struct dcache_block the_cache[DCACHE_SIZE];
-
-/* Initialize the data cache. */
-static void
-dcache_init ()
-{
- register i;
- register struct dcache_block *db;
-
- db = the_cache;
- dcache_free.next = dcache_free.last = &dcache_free;
- dcache_valid.next = dcache_valid.last = &dcache_valid;
- for (i=0;i<DCACHE_SIZE;i++,db++)
- insque (db, &dcache_free);
-}
-
-
-/***********************************************************************
- * I/O stuff stolen from remote-eb.c
- ***********************************************************************/
-
-static int timeout = 2;
-
-static CONST char *dev_name;
-
-
-/* Descriptor for I/O to remote machine. Initialize it to -1 so that
- hms_open knows that we don't have a file open when the program
- starts. */
-
-
-int is_open = 0;
-int check_open()
-{
- if (!is_open)
- {
- error("remote device not open");
- }
-}
-
-#define ON 1
-#define OFF 0
-
-/* Read a character from the remote system, doing all the fancy
- timeout stuff. */
-static int
-readchar ()
-{
- int ok;
- int buf;
- buf = serial_timedreadchar(timeout, &ok);
-
- if (!ok)
- error ("Timeout reading from remote system.");
-
- if (!quiet)
- printf("%c",buf);
-
- return buf & 0x7f;
-}
-
-static int
-readchar_nofail ()
-{
- int ok;
- int buf;
- buf = serial_timedreadchar(timeout, &ok);
- if (!ok) buf = 0;
- if (!quiet)
- printf("%c",buf);
-
- return buf & 0x7f;
-
-}
-
-/* Keep discarding input from the remote system, until STRING is found.
- Let the user break out immediately. */
+static void hms_open (char *args, int from_tty);
static void
-expect (string)
- char *string;
+hms_supply_register (char *regname, int regnamelen, char *val, int vallen)
{
- char *p = string;
-
+ int regno;
- immediate_quit = 1;
- while (1)
- {
- if (readchar() == *p)
- {
- p++;
- if (*p == '\0')
- {
- immediate_quit = 0;
- return;
- }
- }
- else
- p = string;
- }
-}
+ if (regnamelen != 2)
+ return;
+ if (regname[0] != 'P')
+ return;
+ /* We scan off all the registers in one go */
-/* Keep discarding input until we see the hms prompt.
+ val = monitor_supply_register (PC_REGNUM, val);
+ /* Skip the ccr string */
+ while (*val != '=' && *val)
+ val++;
- The convention for dealing with the prompt is that you
- o give your command
- o *then* wait for the prompt.
+ val = monitor_supply_register (CCR_REGNUM, val + 1);
- Thus the last thing that a procedure does with the serial line
- will be an expect_prompt(). Exception: hms_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 hms_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 ()
-{
- expect ("HMS>");
-}
+ /* Skip up to rest of regs */
+ while (*val != '=' && *val)
+ val++;
-/* 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)
+ for (regno = 0; regno < 7; regno++)
{
- ch = readchar ();
- 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 ();
- error ("Invalid hex digit from remote system.");
- }
+ val = monitor_supply_register (regno, val + 1);
}
}
-/* Get a byte from hms_desc 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;
-}
-
-/* Read a 32-bit hex word from the hms, preceded by a space */
-static long
-get_hex_word()
-{
- long val;
- int j;
-
- val = 0;
- for (j = 0; j < 8; j++)
- val = (val << 4) + get_hex_digit (j == 0);
- return val;
-}
-/* Called when SIGALRM signal sent due to alarm() timeout. */
-
-
-
-/* Number of SIGTRAPs we need to simulate. That is, the next
- NEED_ARTIFICIAL_TRAP calls to hms_wait should just return
- SIGTRAP without actually waiting for anything. */
-
-static int need_artificial_trap = 0;
-
-void
-hms_kill(arg,from_tty)
-char *arg;
-int from_tty;
-{
-
-}
-
-
-
/*
- * Download a file specified in 'args', to the hms.
+ * This array of registers needs to match the indexes used by GDB. The
+ * whole reason this exists is because the various ROM monitors use
+ * different names than GDB does, and don't support all the
+ * registers either. So, typing "info reg sp" becomes a "r30".
*/
-static void
-hms_load(args,fromtty)
-char *args;
-int fromtty;
-{
- bfd *abfd;
- asection *s;
- int n;
- char buffer[1024];
-
-
- DENTER("hms_load()");
- check_open();
-
- dcache_flush();
- inferior_pid = 0;
- abfd = bfd_openr(args,"coff-h8300");
- if (!abfd)
- {
- printf_filtered("Unable to open file %s\n", args);
- return;
- }
-
- if (bfd_check_format(abfd, bfd_object) ==0)
- {
- printf_filtered("File is not an object file\n");
- return ;
- }
-
- s = abfd->sections;
- while (s != (asection *)NULL)
- {
- if (s->flags & SEC_LOAD)
- {
- int i;
-
-
-#define DELTA 1024
- char *buffer = xmalloc(DELTA);
- printf_filtered("%s\t: 0x%4x .. 0x%4x ",s->name, s->vma, s->vma + s->_raw_size);
- for (i = 0; i < s->_raw_size; i+= DELTA)
- {
- int delta = DELTA;
- if (delta > s->_raw_size - i)
- delta = s->_raw_size - i ;
-
- bfd_get_section_contents(abfd, s, buffer, i, delta);
- hms_write_inferior_memory(s->vma + i, buffer, delta);
- printf_filtered("*");
- fflush(stdout);
- }
- printf_filtered( "\n");
- free(buffer);
- }
- s = s->next;
- }
- sprintf(buffer, "r PC=%x", abfd->start_address);
- hms_write_cr(buffer);
- expect_prompt();
-
- DEXIT("hms_load()");
-}
-/* This is called not only when we first attach, but also when the
- user types "run" after having attached. */
-void
-hms_create_inferior (execfile, args, env)
- char *execfile;
- char *args;
- char **env;
+static char *hms_regnames[] =
{
- int entry_pt;
- char buffer[100];
- DENTER("hms_create_inferior()");
-
- if (args && *args)
- error ("Can't pass arguments to remote hms process.");
-
- if (execfile == 0 || exec_bfd == 0)
- error ("No exec file specified");
-
- entry_pt = (int) bfd_get_start_address (exec_bfd);
- check_open();
-
-
- hms_kill(NULL,NULL);
- hms_clear_breakpoints();
- init_wait_for_inferior ();
- hms_write_cr("");
- expect_prompt();
-
- insert_breakpoints (); /* Needed to get correct instruction in cache */
- proceed(entry_pt, -1, 0);
-
-
- DEXIT("hms_create_inferior()");
-}
-
+ "R0", "R1", "R2", "R3", "R4", "R5", "R6", "R7", "CCR", "PC", "", "", "", ""
+};
-/* Open a connection to a remote debugger.
- NAME is the filename used for communication, then a space,
- then the baud rate.
+/*
+ * 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.
*/
-static char *
-find_end_of_word(s)
-char *s;
-{
- while (*s && !isspace(*s))
- s++;
- return s;
-}
+static struct target_ops hms_ops;
-static char *get_word(p)
-char **p;
-{
- char *s = *p;
- char *word ;
- char *copy;
- size_t len;
-
- while (isspace(*s))
- s++;
-
- word = s;
-
- len = 0;
-
- while (*s && !isspace(*s))
- {
- s++;
- len++;
-
- }
- copy = xmalloc(len+1);
- memcpy(copy, word, len);
- copy[len] = 0;
- *p = s;
- return copy;
-}
+static char *hms_inits[] =
+{"\003", /* Resets the prompt, and clears repeated cmds */
+ NULL};
-static int baudrate = 9600;
+static struct monitor_ops hms_cmds;
-static int
-is_baudrate_right()
-{
- int ok;
- /* Put this port into NORMAL mode, send the 'normal' character */
-
- hms_write("\001", 1); /* Control A */
- hms_write("\r", 1); /* Cr */
-
- while (1)
- {
- serial_timedreadchar(timeout, &ok);
- if (!ok) break;
- }
-
- hms_write("r",1);
-
- if (readchar_nofail() == 'r')
- return 1;
-
- /* Not the right baudrate, or the board's not on */
- return 0;
-}
static void
-set_rate()
-{
- if (!serial_setbaudrate(baudrate))
- error("Can't set baudrate");
-}
+init_hms_cmds (void)
+{
+ hms_cmds.flags = MO_CLR_BREAK_USES_ADDR | MO_FILL_USES_ADDR | MO_GETMEM_NEEDS_RANGE;
+ hms_cmds.init = hms_inits; /* Init strings */
+ hms_cmds.cont = "g\r"; /* continue command */
+ hms_cmds.step = "s\r"; /* single step */
+ hms_cmds.stop = "\003"; /* ^C interrupts the program */
+ hms_cmds.set_break = "b %x\r"; /* set a breakpoint */
+ hms_cmds.clr_break = "b - %x\r"; /* clear a breakpoint */
+ hms_cmds.clr_all_break = "b -\r"; /* clear all breakpoints */
+ hms_cmds.fill = "f %x %x %x\r"; /* fill (start end val) */
+ hms_cmds.setmem.cmdb = "m.b %x=%x\r"; /* setmem.cmdb (addr, value) */
+ hms_cmds.setmem.cmdw = "m.w %x=%x\r"; /* setmem.cmdw (addr, value) */
+ hms_cmds.setmem.cmdl = NULL; /* setmem.cmdl (addr, value) */
+ hms_cmds.setmem.cmdll = NULL; /* setmem.cmdll (addr, value) */
+ hms_cmds.setmem.resp_delim = NULL; /* setreg.resp_delim */
+ hms_cmds.setmem.term = NULL; /* setreg.term */
+ hms_cmds.setmem.term_cmd = NULL; /* setreg.term_cmd */
+ hms_cmds.getmem.cmdb = "m.b %x %x\r"; /* getmem.cmdb (addr, addr) */
+ hms_cmds.getmem.cmdw = "m.w %x %x\r"; /* getmem.cmdw (addr, addr) */
+ hms_cmds.getmem.cmdl = NULL; /* getmem.cmdl (addr, addr) */
+ hms_cmds.getmem.cmdll = NULL; /* getmem.cmdll (addr, addr) */
+ hms_cmds.getmem.resp_delim = ": "; /* getmem.resp_delim */
+ hms_cmds.getmem.term = ">"; /* getmem.term */
+ hms_cmds.getmem.term_cmd = "\003"; /* getmem.term_cmd */
+ hms_cmds.setreg.cmd = "r %s=%x\r"; /* setreg.cmd (name, value) */
+ hms_cmds.setreg.resp_delim = NULL; /* setreg.resp_delim */
+ hms_cmds.setreg.term = NULL; /* setreg.term */
+ hms_cmds.setreg.term_cmd = NULL; /* setreg.term_cmd */
+ hms_cmds.getreg.cmd = "r %s\r"; /* getreg.cmd (name) */
+ hms_cmds.getreg.resp_delim = " ("; /* getreg.resp_delim */
+ hms_cmds.getreg.term = ":"; /* getreg.term */
+ hms_cmds.getreg.term_cmd = "\003"; /* getreg.term_cmd */
+ hms_cmds.dump_registers = "r\r"; /* dump_registers */
+ hms_cmds.register_pattern = "\\(\\w+\\)=\\([0-9a-fA-F]+\\)"; /* register_pattern */
+ hms_cmds.supply_register = hms_supply_register; /* supply_register */
+ hms_cmds.load_routine = NULL; /* load_routine (defaults to SRECs) */
+ hms_cmds.load = "tl\r"; /* download command */
+ hms_cmds.loadresp = NULL; /* load response */
+ hms_cmds.prompt = ">"; /* monitor command prompt */
+ hms_cmds.line_term = "\r"; /* end-of-command delimitor */
+ hms_cmds.cmd_end = NULL; /* optional command terminator */
+ hms_cmds.target = &hms_ops; /* target operations */
+ hms_cmds.stopbits = SERIAL_1_STOPBITS; /* number of stop bits */
+ hms_cmds.regnames = hms_regnames; /* registers names */
+ hms_cmds.magic = MONITOR_OPS_MAGIC; /* magic */
+} /* init_hms-cmds */
static void
-get_baudrate_right()
+hms_open (char *args, int from_tty)
{
- while (!is_baudrate_right())
- {
- baudrate = serial_nextbaudrate(baudrate);
- if (baudrate == 0) {
- printf_filtered("Board not yet in sync\n");
- break;
- }
- printf_filtered("Board not responding, trying %d baud\n",baudrate);
- QUIT;
- serial_setbaudrate(baudrate);
- }
+ monitor_open (args, &hms_cmds, from_tty);
}
-static void
-hms_open (name, from_tty)
- char *name;
- int from_tty;
-{
-
- unsigned int prl;
- char *p;
-
- DENTER("hms_open()");
- if(name == 0)
- {
- name = "";
-
- }
- if (is_open)
- hms_close (0);
- if (name && strlen(name))
- dev_name = strdup(name);
- if (!serial_open(dev_name))
- perror_with_name ((char *)dev_name);
- serial_raw();
- is_open = 1;
-
-
- dcache_init();
-
-
- /* start_remote (); /* Initialize gdb process mechanisms */
-
- get_baudrate_right();
-
- /* Hello? Are you there? */
- serial_write("\r",1);
- expect_prompt ();
-
- /* Clear any break points */
- hms_clear_breakpoints();
-
-
- printf_filtered("Connected to remote H8/300 HMS system.\n");
-
- DEXIT("hms_open()");
-}
-
-/* Close out all files and local state before this target loses control. */
-
-static void
-hms_close (quitting)
- int quitting;
-{
-
- DENTER("hms_close()");
-
- /* Clear any break points */
- hms_clear_breakpoints();
-
- /* Put this port back into REMOTE mode */
- sleep(1); /* Let any output make it all the way back */
- serial_write("R\r", 2);
- serial_close();
- is_open = 0;
-
- DEXIT("hms_close()");
-}
-
-/* Attach to the target that is already loaded and possibly running */
-static void
-hms_attach (args, from_tty)
- char *args;
- int from_tty;
-{
-
- DENTER("hms_attach()");
-
- /* push_target(&hms_ops); /* This done in hms_open() */
-
- mark_breakpoints_out ();
-
- /* Send the hms a kill. It is ok if it is not already running */
-#if 0
- fprintf(hms_stream, "K\r");
- expect_prompt(); /* Slurp the echo */
-#endif
- /* We will get a task spawn event immediately. */
- init_wait_for_inferior ();
- clear_proceed_status ();
- stop_soon_quietly = 1;
- wait_for_inferior ();
- stop_soon_quietly = 0;
- normal_stop ();
- DEXIT("hms_attach()");
-}
+int write_dos_tick_delay;
+extern initialize_file_ftype _initialize_remote_hms; /* -Wmissing-prototypes */
-/* Terminate the open connection to the remote debugger.
- Use this when you want to detach and do something else
- with your gdb. */
void
-hms_detach (args,from_tty)
- char *args;
- int from_tty;
-{
- DENTER("hms_detach()");
- if (is_open)
- {
- hms_clear_breakpoints();
- }
-
- pop_target(); /* calls hms_close to do the real work */
- if (from_tty)
- printf_filtered ("Ending remote %s debugging\n", target_shortname);
- DEXIT("hms_detach()");
-}
-
-/* Tell the remote machine to resume. */
-
-void
-hms_resume (step, sig)
- int step, sig;
-{
- DENTER("hms_resume()");
- dcache_flush();
-
- if (step)
- {
- hms_write_cr("s");
- expect("Step>");
-
- /* Force the next hms_wait to return a trap. Not doing anything
- about I/O from the target means that the user has to type
- "continue" to see any. FIXME, this should be fixed. */
- need_artificial_trap = 1;
- }
- else
- {
- hms_write_cr("g");
- expect("g");
- }
- DEXIT("hms_resume()");
-}
-
-/* Wait until the remote machine stops, then return,
- storing status in STATUS just as `wait' would. */
-
-int
-hms_wait (status)
- WAITTYPE *status;
-{
- /* Strings to look for. '?' means match any single character.
- Note that with the algorithm we use, the initial character
- of the string cannot recur in the string, or we will not
- find some cases of the string in the input. */
-
- static char bpt[] = "At breakpoint:";
- /* It would be tempting to look for "\n[__exit + 0x8]\n"
- but that requires loading symbols with "yc i" and even if
- we did do that we don't know that the file has symbols. */
- static char exitmsg[] = "HMS>";
- char *bp = bpt;
- char *ep = exitmsg;
-
- /* Large enough for either sizeof (bpt) or sizeof (exitmsg) chars. */
- char swallowed[50];
- /* Current position in swallowed. */
- char *swallowed_p = swallowed;
-
- int ch;
- int ch_handled;
- int old_timeout = timeout;
- int old_immediate_quit = immediate_quit;
- int swallowed_cr = 0;
-
- DENTER("hms_wait()");
-
- WSETEXIT ((*status), 0);
-
- if (need_artificial_trap != 0)
- {
- WSETSTOP ((*status), SIGTRAP);
- need_artificial_trap--;
- return 0;
- }
-
- timeout = 99999; /* Don't time out -- user program is running. */
- immediate_quit = 1; /* Helps ability to QUIT */
- while (1)
- {
- QUIT; /* Let user quit and leave process running */
- ch_handled = 0;
- ch = readchar ();
- if (ch == *bp)
- {
- bp++;
- if (*bp == '\0')
- break;
- ch_handled = 1;
-
- *swallowed_p++ = ch;
- }
- else
- {
- bp = bpt;
- }
- if (ch == *ep || *ep == '?')
- {
- ep++;
- if (*ep == '\0')
- break;
-
- if (!ch_handled)
- *swallowed_p++ = ch;
- ch_handled = 1;
- }
- else
- {
- ep = exitmsg;
- }
-
- if (!ch_handled) {
- char *p;
- /* Print out any characters which have been swallowed. */
- for (p = swallowed; p < swallowed_p; ++p)
- putc (*p, stdout);
- swallowed_p = swallowed;
-
-
- if ((ch != '\r' && ch != '\n') || swallowed_cr>10)
- {
- putc (ch, stdout);
- swallowed_cr = 10;
- }
- swallowed_cr ++;
-
- }
- }
- if (*bp== '\0')
- {
- WSETSTOP ((*status), SIGTRAP);
- expect_prompt();
- }
- else
- {
- WSETEXIT ((*status), 0);
- }
-
- timeout = old_timeout;
- immediate_quit = old_immediate_quit;
- DEXIT("hms_wait()");
- return 0;
-}
-
-/* Return the name of register number REGNO
- in the form input and output by hms.
-
- Returns a pointer to a static buffer containing the answer. */
-static char *
-get_reg_name (regno)
- int regno;
-{
- static char *rn[NUM_REGS]= REGISTER_NAMES;
- return rn[regno];
-}
-
-/* Read the remote registers. */
-static int gethex(length, start, ok)
-unsigned int length;
-char *start;
-int *ok;
-{
- int result = 0;
- while (length--)
- {
- result <<= 4 ;
- if (*start >='a' && *start <= 'f')
- {
- result += *start - 'a' + 10;
- }
- else if (*start >='A' && *start <= 'F')
- {
- result += *start - 'A' + 10;
- }
- else if (*start >='0' && *start <= '9')
- {
- result += *start - '0' ;
- }
- else *ok = 0;
- start++;
-
- }
- return result;
-}
-static int
-timed_read(buf, n, timeout)
-char *buf;
-
-{
- int i;
- char c;
- i = 0;
- while (i < n)
- {
- c = readchar();
-
- if (c == 0) return i;
- buf[i] = c;
- i++;
-
- }
- return i;
-
-}
-hms_write(a,l)
-char *a;
-{
- int i;
- serial_write(a, l);
-
- if (!quiet)
- for (i = 0; i < l ; i++)
- {
- printf("%c", a[i]);
- }
-}
-
-hms_write_cr(s)
-char *s;
-{
- hms_write( s, strlen(s));
- hms_write("\r",1);
-}
-
-static void
-hms_fetch_register (dummy)
-int dummy;
-{
-#define REGREPLY_SIZE 79
- char linebuf[REGREPLY_SIZE+1];
- int i;
- int s ;
- int gottok;
-
- REGISTER_TYPE reg[NUM_REGS];
- int foo[8];
- check_open();
-
- do
- {
-
- hms_write_cr("r");
- s = timed_read(linebuf, REGREPLY_SIZE, 1);
-
-
- linebuf[REGREPLY_SIZE] = 0;
- gottok = 0;
- if (linebuf[0] == 'r' &&
- linebuf[3] == 'P' &&
- linebuf[4] == 'C' &&
- linebuf[5] == '=' &&
- linebuf[75] == 'H' &&
- linebuf[76] == 'M' &&
- linebuf[77] == 'S')
- {
- /*
- PC=XXXX CCR=XX:XXXXXXXX R0-R7= XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX
- 5436789012345678901234567890123456789012345678901234567890123456789012
- 0 1 2 3 4 5 6
- */
- gottok = 1;
-
- reg[PC_REGNUM] = gethex(4,linebuf+6, &gottok);
- reg[CCR_REGNUM] = gethex(2,linebuf+15, &gottok);
- for (i = 0; i < 8; i++)
- {
- reg[i] = gethex(4, linebuf+34+5*i, &gottok);
- }
- }
- }
- while (!gottok);
- for (i = 0; i < NUM_REGS; i++)
- {
- char swapped[2];
- swapped[1] = reg[i];
- swapped[0] = (reg[i])>> 8;
-
- supply_register (i, swapped);
- }
-}
-
-
-/* Store register REGNO, or all if REGNO == -1.
- Return errno value. */
-static void
-hms_store_register (regno)
- int regno;
-{
-
- /* printf("hms_store_register() called.\n"); fflush(stdout); /* */
- if (regno == -1)
- {
- for (regno = 0; regno < NUM_REGS; regno ++)
- {
- hms_store_register(regno);
- }
- }
- else
- {
- char *name = get_reg_name (regno);
- char buffer[100];
- sprintf(buffer,"r %s=%x", name, read_register(regno));
- hms_write_cr(buffer);
- expect_prompt();
- }
-
- DEXIT("hms_store_registers()");
-
-}
-
-
-
-/* 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. */
-
-void
-hms_prepare_to_store ()
-{
- /* Do nothing, since we can store individual regs */
-}
-
-static CORE_ADDR
-translate_addr(addr)
-CORE_ADDR addr;
-{
-
- return(addr);
-
-}
-
-/* Read a word from remote address ADDR and return it.
- * This goes through the data cache.
- */
-int
-hms_fetch_word (addr)
- CORE_ADDR addr;
-{
- return dcache_fetch (addr);
-}
-
-/* Write a word WORD into remote address ADDR.
- This goes through the data cache. */
-
-void
-hms_store_word (addr, word)
- CORE_ADDR addr;
- int word;
-{
- dcache_poke (addr, word);
-}
-
-int
-hms_xfer_inferior_memory(memaddr, myaddr, len, write, target)
- CORE_ADDR memaddr;
- char *myaddr;
- int len;
- int write;
- struct target_ops *target; /* ignored */
-{
- register int i;
- /* Round starting address down to longword boundary. */
- register CORE_ADDR addr;
- /* Round ending address up; get number of longwords that makes. */
- register int count;
- /* Allocate buffer of that many longwords. */
- register int *buffer ;
-
- memaddr &= 0xffff;
- addr = memaddr & - sizeof (int);
- count = (((memaddr + len) - addr) + sizeof (int) - 1) / sizeof (int);
-
-
- buffer = (int *)alloca (count * sizeof (int));
- if (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] = hms_fetch_word (addr);
- }
-
- if (count > 1) /* FIXME, avoid if even boundary */
- {
- buffer[count - 1]
- = hms_fetch_word (addr + (count - 1) * sizeof (int));
- }
-
- /* Copy data to be written over corresponding part of buffer */
-
- bcopy (myaddr, (char *) buffer + (memaddr & (sizeof (int) - 1)), len);
-
- /* Write the entire buffer. */
-
- for (i = 0; i < count; i++, addr += sizeof (int))
- {
- errno = 0;
- hms_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] = hms_fetch_word (addr);
- if (errno)
- {
- return 0;
- }
- QUIT;
- }
-
- /* Copy appropriate bytes out of the buffer. */
- bcopy ((char *) buffer + (memaddr & (sizeof (int) - 1)), myaddr, len);
- }
-
-
- return len;
-}
-
-int
-hms_write_inferior_memory (memaddr, myaddr, len)
- CORE_ADDR memaddr;
- unsigned char *myaddr;
- int len;
-{
- bfd_vma addr;
- int done;
- int todo ;
- done = 0;
- while(done < len)
- {
- char buffer[20];
- int thisgo;
- int idx;
- thisgo = len - done;
- if (thisgo > 20) thisgo = 20;
-
- sprintf(buffer,"M.B %4x =", memaddr+done);
- hms_write(buffer,10);
- for (idx = 0; idx < thisgo; idx++)
- {
- char buf[20];
- sprintf(buf, "%2x ", myaddr[idx+done]);
- hms_write(buf, 3);
- }
- hms_write_cr("");
- expect_prompt();
- done += thisgo;
- }
-
-
-}
-
-void
-hms_files_info ()
-{
-char *file = "nothing";
-if (exec_bfd)
- file = bfd_get_filename(exec_bfd);
-
-if (exec_bfd)
-#ifdef __GO32__
- printf_filtered("\tAttached to DOS asynctsr and running program %s\n",file);
-#else
- printf_filtered("\tAttached to %s at %d baud and running program %s\n",file);
-#endif
- printf_filtered("\ton an H8/300 processor.\n");
-}
-
-/* Copy LEN bytes of data from debugger memory at MYADDR
- to inferior's memory at MEMADDR. Returns errno value.
- * sb/sh instructions don't work on unaligned addresses, when TU=1.
- */
-
-
-/* Read LEN bytes from inferior memory at MEMADDR. Put the result
- at debugger address MYADDR. Returns errno value. */
-int
-hms_read_inferior_memory(memaddr, myaddr, len)
- CORE_ADDR memaddr;
- char *myaddr;
- int len;
-{
- /* Align to nearest low 16 bits */
- int i;
-
-#if 0
- CORE_ADDR start = memaddr & ~0xf;
- CORE_ADDR end = ((memaddr + len +16) & ~0xf) -1;
-#endif
- CORE_ADDR start = memaddr;
- CORE_ADDR end = memaddr + len -1;
-
- int ok =1;
-
- /*
- AAAA: XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX '................'
- 012345678901234567890123456789012345678901234567890123456789012345
- 0 1 2 3 4 5 6
- */
- char buffer[66];
- if (memaddr & 0xf) abort();
- if (len != 16) abort();
-
- sprintf(buffer, "m %4x %4x", start & 0xffff, end & 0xffff);
- hms_write_cr(buffer);
- /* drop the echo and newline*/
- for (i = 0; i < 13; i++)
- readchar();
-
-
-
- /* Grab the lines as they come out and fill the area */
- /* Skip over cr */
- while(1)
- {
- int p;
- int i;
- int addr;
- size_t idx;
-
- char byte[16];
- buffer[0] = readchar();
- if (buffer[0] == 'M')
- break;
- for (i = 1; i < 66; i++)
- buffer[i] = readchar();
-
- /* Now parse the line */
-
- addr = gethex(4, buffer, &ok);
- idx = 6;
- for (p = 0; p < 16; p+=2)
- {
- byte[p] = gethex(2, buffer + idx, &ok);
- byte[p+1] = gethex(2, buffer+ idx + 2, &ok);
- idx+=5;
-
- }
-
-
- for (p = 0; p<16;p++)
- {
- if (addr + p >= memaddr &&
- addr + p < memaddr + len)
- {
- myaddr[ (addr + p)-memaddr] = byte[p];
-
- }
-
- }
- }
- hms_write_cr(" ");
- expect_prompt();
- return len;
-}
-
-/* This routine is run as a hook, just before the main command loop is
- entered. If gdb is configured for the H8, but has not had its
- target specified yet, this will loop prompting the user to do so.
-*/
-
-hms_before_main_loop ()
-{
- char ttyname[100];
- char *p, *p2;
- extern FILE *instream;
- extern jmp_buf to_top_level;
-
- push_target (&hms_ops);
-}
-
-
-#define MAX_BREAKS 16
-static int num_brkpts=0;
-static int
-hms_insert_breakpoint(addr, save)
-CORE_ADDR addr;
-char *save; /* Throw away, let hms save instructions */
-{
- DENTER("hms_insert_breakpoint()");
- check_open();
-
- if (num_brkpts < MAX_BREAKS)
- {
- char buffer[100];
- num_brkpts++;
- sprintf(buffer,"b %x", addr & 0xffff);
- hms_write_cr(buffer);
- expect_prompt ();
- DEXIT("hms_insert_breakpoint() success");
- return(0);
- }
- else
- {
- fprintf_filtered(stderr,
- "Too many break points, break point not installed\n");
- DEXIT("hms_insert_breakpoint() failure");
- return(1);
- }
-
-
-}
-static int
-hms_remove_breakpoint(addr, save)
-CORE_ADDR addr;
-char *save; /* Throw away, let hms save instructions */
-{
- DENTER("hms_remove_breakpoint()");
- if (num_brkpts > 0)
- {
- char buffer[100];
-
- num_brkpts--;
- sprintf(buffer,"b - %x", addr & 0xffff);
- hms_write_cr(buffer);
- expect_prompt();
-
- }
- DEXIT("hms_remove_breakpoint()");
- return(0);
-}
-
-/* Clear the hmss notion of what the break points are */
-static int
-hms_clear_breakpoints()
-{
-
- DENTER("hms_clear_breakpoint()");
- if (is_open) {
- hms_write_cr("b -");
- expect_prompt ();
- }
- num_brkpts = 0;
- DEXIT("hms_clear_breakpoint()");
-}
-static void
-hms_mourn()
-{
- DENTER("hms_mourn()");
- hms_clear_breakpoints();
- generic_mourn_inferior ();
- DEXIT("hms_mourn()");
-}
-
-
-
-/* Put a command string, in args, out to the hms. The hms is assumed to
- be in raw mode, all writing/reading done through desc.
- Ouput from the hms is placed on the users terminal until the
- prompt from the hms is seen.
- FIXME: Can't handle commands that take input. */
-
-void
-hms_com (args, fromtty)
- char *args;
- int fromtty;
-{
- check_open();
-
- if (!args) return;
-
- /* Clear all input so only command relative output is displayed */
-
- hms_write_cr(args);
- hms_write("\030",1);
- expect_prompt();
-}
-
-/* Define the target subroutine names */
-
-struct target_ops hms_ops = {
- "hms", "Remote HMS monitor",
-"Use the H8 evaluation board running the HMS monitor connected\n\
-by a serial line.",
-
- hms_open, hms_close,
- hms_attach, hms_detach, hms_resume, hms_wait,
- hms_fetch_register, hms_store_register,
- hms_prepare_to_store, 0, 0, /* conv_to, conv_from */
- hms_xfer_inferior_memory,
- hms_files_info,
- hms_insert_breakpoint, hms_remove_breakpoint, /* Breakpoints */
- 0, 0, 0, 0, 0, /* Terminal handling */
- hms_kill, /* FIXME, kill */
- hms_load,
- 0, /* lookup_symbol */
- hms_create_inferior, /* create_inferior */
- hms_mourn, /* mourn_inferior FIXME */
- 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 */
-};
-
-
-hms_quiet()
-{
- quiet = ! quiet;
- if (quiet)
- printf_filtered("Snoop disabled\n");
- else
- printf_filtered("Snoop enabled\n");
-
-}
-
-hms_device(s)
-char *s;
-{
- if (s)
- {
- dev_name = get_word(&s);
- }
-}
-
-
-static
-hms_speed(s)
-char *s;
-{
- check_open();
-
- if (s)
- {
- char buffer[100];
- int newrate = atoi(s);
- int which = 0;
- if (!serial_setbaudrate(newrate))
- error("Can't use %d baud\n", newrate);
-
- printf_filtered("Checking target is in sync\n");
-
- get_baudrate_right();
- baudrate = newrate;
- printf_filtered("Sending commands to set target to %d\n",
- baudrate);
-
- sprintf(buffer, "tm %d. N 8 1", baudrate);
- hms_write_cr(buffer);
- }
-}
-
-/***********************************************************************/
-
-void
-_initialize_remote_hms ()
-{
+_initialize_remote_hms (void)
+{
+ init_hms_cmds ();
+ init_monitor_ops (&hms_ops);
+
+ hms_ops.to_shortname = "hms";
+ hms_ops.to_longname = "Hitachi Microsystems H8/300 debug monitor";
+ hms_ops.to_doc = "Debug via the HMS monitor.\n\
+Specify the serial device it is connected to (e.g. /dev/ttya).";
+ hms_ops.to_open = hms_open;
+ /* By trial and error I've found that this delay doesn't break things */
+ write_dos_tick_delay = 1;
add_target (&hms_ops);
- add_com ("hms <command>", class_obscure, hms_com,
- "Send a command to the HMS monitor.");
- add_com ("snoop", class_obscure, hms_quiet,
- "Show what commands are going to the monitor");
-
- add_com ("device", class_obscure, hms_device,
- "Set the terminal line for HMS communications");
-
- add_com ("speed", class_obscure, hms_speed,
- "Set the terminal line speed for HMS communications");
-
- dev_name = serial_default_name();
}
-
-
projects / deliverable / binutils-gdb.git / blobdiff