mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-22 16:53:31 +08:00
7bd1f0c5f9
mainsym def into the block it's used in. * configure.in configure: Allow NATDEPFILES to be recognized in .mh files regardless of whitespace. * cpu32bug-rom.c (cpu32bug_cmds): Change load_response string to keep downloads from hanging. * remote-wiggler.c: Add support for flash upgrades. * (wiggler_error): Fix message format. Add new error code. * (wiggler_write_byets): Error code is hex. Report errors with proper routine name. * (wiggler_read_byets): Report errors with proper routine name. * (get_packet): Add support for new flash commands. * (wiggler_load): Call clear_symtab_users() to reset things properly after download. * (flash_xfer_memory bdm_update_flash_command): New funxtions to support flash upgrades for Wiggler. * (_initialize_remote_wiggler): Add `bdm update-flash' command.
1679 lines
41 KiB
C
1679 lines
41 KiB
C
/* Remote target communications for the Macraigor Systems BDM Wiggler
|
||
Copyright 1996 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. */
|
||
|
||
#include "defs.h"
|
||
#include "gdbcore.h"
|
||
#include "gdb_string.h"
|
||
#include <fcntl.h>
|
||
#include "frame.h"
|
||
#include "inferior.h"
|
||
#include "bfd.h"
|
||
#include "symfile.h"
|
||
#include "target.h"
|
||
#include "wait.h"
|
||
#include "gdbcmd.h"
|
||
#include "objfiles.h"
|
||
#include "gdb-stabs.h"
|
||
|
||
#include "dcache.h"
|
||
|
||
#ifdef USG
|
||
#include <sys/types.h>
|
||
#endif
|
||
|
||
#include <signal.h>
|
||
#include "serial.h"
|
||
|
||
/* Wiggler serial protocol definitions */
|
||
|
||
#define DLE 020 /* Quote char */
|
||
#define SYN 026 /* Start of packet */
|
||
#define RAW_SYN ((026 << 8) | 026) /* get_quoted_char found a naked SYN */
|
||
|
||
/* Status flags */
|
||
|
||
#define WIGGLER_FLAG_RESET 0x01 /* Target is being reset */
|
||
#define WIGGLER_FLAG_STOPPED 0x02 /* Target is halted */
|
||
#define WIGGLER_FLAG_BDM 0x04 /* Target is in BDM */
|
||
#define WIGGLER_FLAG_PWF 0x08 /* Power failed */
|
||
#define WIGGLER_FLAG_CABLE_DISC 0x10 /* BDM cable disconnected */
|
||
|
||
#define WIGGLER_AYT 0x0 /* Are you there? */
|
||
#define WIGGLER_GET_VERSION 0x1 /* Get Version */
|
||
#define WIGGLER_SET_BAUD_RATE 0x2 /* Set Baud Rate */
|
||
#define WIGGLER_INIT 0x10 /* Initialize Wiggler */
|
||
#define WIGGLER_SET_SPEED 0x11 /* Set Speed */
|
||
#define WIGGLER_GET_STATUS_MASK 0x12 /* Get Status Mask */
|
||
#define WIGGLER_GET_CTRS 0x13 /* Get Error Counters */
|
||
#define WIGGLER_SET_FUNC_CODE 0x14 /* Set Function Code */
|
||
#define WIGGLER_SET_CTL_FLAGS 0x15 /* Set Control Flags */
|
||
#define WIGGLER_SET_BUF_ADDR 0x16 /* Set Register Buffer Address */
|
||
#define WIGGLER_RUN 0x20 /* Run Target from PC */
|
||
#define WIGGLER_RUN_ADDR 0x21 /* Run Target from Specified Address */
|
||
#define WIGGLER_STOP 0x22 /* Stop Target */
|
||
#define WIGGLER_RESET_RUN 0x23 /* Reset Target and Run */
|
||
#define WIGGLER_RESET 0x24 /* Reset Target and Halt */
|
||
#define WIGGLER_STEP 0x25 /* Single step */
|
||
#define WIGGLER_READ_REGS 0x30 /* Read Registers */
|
||
#define WIGGLER_WRITE_REGS 0x31 /* Write Registers */
|
||
#define WIGGLER_READ_MEM 0x32 /* Read Memory */
|
||
#define WIGGLER_WRITE_MEM 0x33 /* Write Memory */
|
||
#define WIGGLER_FILL_MEM 0x34 /* Fill Memory */
|
||
#define WIGGLER_MOVE_MEM 0x35 /* Move Memory */
|
||
|
||
#define WIGGLER_READ_INT_MEM 0x80 /* Read Internal Memory */
|
||
#define WIGGLER_WRITE_INT_MEM 0x81 /* Write Internal Memory */
|
||
#define WIGGLER_JUMP 0x82 /* Jump to Subroutine */
|
||
|
||
#define WIGGLER_ERASE_FLASH 0x90 /* Erase flash memory */
|
||
#define WIGGLER_PROGRAM_FLASH 0x91 /* Write flash memory */
|
||
#define WIGGLER_EXIT_MON 0x93 /* Exit the flash programming monitor */
|
||
#define WIGGLER_ENTER_MON 0x94 /* Enter the flash programming monitor */
|
||
|
||
#define WIGGLER_SET_STATUS 0x0a /* Set status */
|
||
#define WIGGLER_FLAG_STOP 0x0 /* Stop the target, enter BDM */
|
||
#define WIGGLER_FLAG_START 0x01 /* Start the target at PC */
|
||
#define WIGGLER_FLAG_RETURN_STATUS 0x04 /* Return async status */
|
||
|
||
/* Stuff that should be in tm-xxx files. */
|
||
#if 1
|
||
#define BDM_NUM_REGS 24
|
||
#define BDM_REGMAP 0, 1, 2, 3, 4, 5, 6, 7, /* d0 -> d7 */ \
|
||
8, 9, 10, 11, 12, 13, 14, 15, /* a0 -> a7 */ \
|
||
18, 16, /* ps, pc */ \
|
||
-1, -1, -1, -1, -1, -1, -1, -1, /* fp0 -> fp7 */ \
|
||
-1, -1, -1, -1, -1 /* fpcontrol, fpstatus, fpiaddr, fpcode, fpflags */
|
||
#define BDM_BREAKPOINT 0x4a, 0xfa /* BGND insn */
|
||
#else
|
||
#define BDM_NUM_REGS 24
|
||
#define BDM_REGMAP 8, 9, 10, 11, 12, 13, 14, 15, /* d0 -> d7 */ \
|
||
16, 17, 18, 19, 20, 21, 22, 23, /* a0 -> a7 */ \
|
||
4, 0, /* ps, pc */ \
|
||
-1, -1, -1, -1, -1, -1, -1, -1, /* fp0 -> fp7 */ \
|
||
-1, -1, -1, -1, -1 /* fpcontrol, fpstatus, fpiaddr, fpcode, fpflags */
|
||
#define WIGGLER_POLL
|
||
#endif
|
||
|
||
/* Prototypes for local functions */
|
||
|
||
static void wiggler_stop PARAMS ((void));
|
||
|
||
static void put_packet PARAMS ((unsigned char *packet, int pktlen));
|
||
static unsigned char * get_packet PARAMS ((int cmd, int *pktlen, int timeout));
|
||
|
||
static int wiggler_write_bytes PARAMS ((CORE_ADDR memaddr,
|
||
char *myaddr, int len));
|
||
|
||
static int wiggler_read_bytes PARAMS ((CORE_ADDR memaddr,
|
||
char *myaddr, int len));
|
||
|
||
static void wiggler_files_info PARAMS ((struct target_ops *ignore));
|
||
|
||
static int wiggler_xfer_memory PARAMS ((CORE_ADDR memaddr, char *myaddr,
|
||
int len, int should_write,
|
||
struct target_ops *target));
|
||
|
||
static void wiggler_prepare_to_store PARAMS ((void));
|
||
|
||
static void wiggler_fetch_registers PARAMS ((int regno));
|
||
|
||
static void wiggler_resume PARAMS ((int pid, int step,
|
||
enum target_signal siggnal));
|
||
|
||
static int wiggler_start_remote PARAMS ((char *dummy));
|
||
|
||
static void wiggler_open PARAMS ((char *name, int from_tty));
|
||
|
||
static void wiggler_close PARAMS ((int quitting));
|
||
|
||
static void wiggler_store_registers PARAMS ((int regno));
|
||
|
||
static void wiggler_mourn PARAMS ((void));
|
||
|
||
static int readchar PARAMS ((int timeout));
|
||
|
||
static void reset_packet PARAMS ((void));
|
||
|
||
static void output_packet PARAMS ((void));
|
||
|
||
static int get_quoted_char PARAMS ((int timeout));
|
||
|
||
static void put_quoted_char PARAMS ((int c));
|
||
|
||
static int wiggler_wait PARAMS ((int pid, struct target_waitstatus *status));
|
||
|
||
static void wiggler_kill PARAMS ((void));
|
||
|
||
static void wiggler_detach PARAMS ((char *args, int from_tty));
|
||
|
||
static void wiggler_interrupt PARAMS ((int signo));
|
||
|
||
static void wiggler_interrupt_twice PARAMS ((int signo));
|
||
|
||
static void interrupt_query PARAMS ((void));
|
||
|
||
static unsigned char * do_command PARAMS ((int cmd, int *statusp, int *lenp));
|
||
|
||
static unsigned char * read_bdm_registers PARAMS ((int first_bdm_regno,
|
||
int last_bdm_regno,
|
||
int *numregs));
|
||
|
||
extern struct target_ops wiggler_ops; /* Forward decl */
|
||
|
||
static int last_run_status;
|
||
|
||
/* This was 5 seconds, which is a long time to sit and wait.
|
||
Unless this is going though some terminal server or multiplexer or
|
||
other form of hairy serial connection, I would think 2 seconds would
|
||
be plenty. */
|
||
|
||
/* Changed to allow option to set timeout value.
|
||
was static int remote_timeout = 2; */
|
||
extern int remote_timeout;
|
||
|
||
/* Descriptor for I/O to remote machine. Initialize it to NULL so that
|
||
wiggler_open knows that we don't have a file open when the program
|
||
starts. */
|
||
serial_t wiggler_desc = NULL;
|
||
|
||
static void
|
||
wiggler_error (s, error_code)
|
||
char *s;
|
||
int error_code;
|
||
{
|
||
char buf[100];
|
||
|
||
fputs_filtered (s, gdb_stderr);
|
||
fputs_filtered (" ", gdb_stderr);
|
||
|
||
switch (error_code)
|
||
{
|
||
case 0x1: s = "Unknown fault"; break;
|
||
case 0x2: s = "Power failed"; break;
|
||
case 0x3: s = "Cable disconnected"; break;
|
||
case 0x4: s = "Couldn't enter BDM"; break;
|
||
case 0x5: s = "Target stuck in reset"; break;
|
||
case 0x6: s = "Port not configured"; break;
|
||
case 0x7: s = "Write verify failed"; break;
|
||
case 0x11: s = "Bus error"; break;
|
||
case 0x12: s = "Checksum error"; break;
|
||
case 0x13: s = "Illegal command"; break;
|
||
case 0x14: s = "Parameter error"; break;
|
||
case 0x15: s = "Internal error"; break;
|
||
case 0x16: s = "Register buffer error"; break;
|
||
case 0x80: s = "Flash erase error"; break;
|
||
default:
|
||
sprintf (buf, "Unknown error code %d", error_code);
|
||
s = buf;
|
||
}
|
||
|
||
error (s);
|
||
}
|
||
|
||
/* Return nonzero if the thread TH is still alive on the remote system. */
|
||
|
||
static int
|
||
wiggler_thread_alive (th)
|
||
int th;
|
||
{
|
||
return 1;
|
||
}
|
||
|
||
/* Clean up connection to a remote debugger. */
|
||
|
||
/* ARGSUSED */
|
||
static void
|
||
wiggler_close (quitting)
|
||
int quitting;
|
||
{
|
||
if (wiggler_desc)
|
||
SERIAL_CLOSE (wiggler_desc);
|
||
wiggler_desc = NULL;
|
||
}
|
||
|
||
/* Stub for catch_errors. */
|
||
|
||
static int
|
||
wiggler_start_remote (dummy)
|
||
char *dummy;
|
||
{
|
||
unsigned char buf[10], *p;
|
||
int pktlen;
|
||
int status;
|
||
int error_code;
|
||
int speed;
|
||
|
||
immediate_quit = 1; /* Allow user to interrupt it */
|
||
|
||
SERIAL_SEND_BREAK (wiggler_desc); /* Wake up the wiggler */
|
||
|
||
do_command (WIGGLER_AYT, &status, &pktlen);
|
||
|
||
p = do_command (WIGGLER_GET_VERSION, &status, &pktlen);
|
||
|
||
printf_unfiltered ("[Wiggler version %x.%x, capability 0x%x]\n",
|
||
p[0], p[1], (p[2] << 16) | p[3]);
|
||
|
||
#if 1
|
||
speed = 80; /* Divide clock by 4000 */
|
||
|
||
buf[0] = WIGGLER_INIT;
|
||
buf[1] = speed >> 8;
|
||
buf[2] = speed & 0xff;
|
||
buf[3] = 0; /* CPU32 for now */
|
||
put_packet (buf, 4); /* Init Wiggler params */
|
||
p = get_packet (buf[0], &pktlen, remote_timeout);
|
||
|
||
if (pktlen < 2)
|
||
error ("Truncated response packet from Wiggler");
|
||
|
||
status = p[1];
|
||
error_code = p[2];
|
||
|
||
if (error_code != 0)
|
||
wiggler_error ("WIGGLER_INIT:", error_code);
|
||
#endif
|
||
|
||
#if 0
|
||
/* Reset the target */
|
||
|
||
do_command (WIGGLER_RESET_RUN, &status, &pktlen);
|
||
/* do_command (WIGGLER_RESET, &status, &pktlen);*/
|
||
#endif
|
||
|
||
/* If processor is still running, stop it. */
|
||
|
||
if (!(status & WIGGLER_FLAG_BDM))
|
||
wiggler_stop ();
|
||
|
||
#if 1
|
||
buf[0] = WIGGLER_SET_CTL_FLAGS;
|
||
buf[1] = 0;
|
||
buf[2] = 1; /* Asynchronously return status when target stops */
|
||
put_packet (buf, 3);
|
||
|
||
p = get_packet (buf[0], &pktlen, remote_timeout);
|
||
|
||
if (pktlen < 2)
|
||
error ("Truncated response packet from Wiggler");
|
||
|
||
status = p[1];
|
||
error_code = p[2];
|
||
|
||
if (error_code != 0)
|
||
wiggler_error ("WIGGLER_SET_CTL_FLAGS:", error_code);
|
||
#endif
|
||
|
||
immediate_quit = 0;
|
||
|
||
/* This is really the job of start_remote however, that makes an assumption
|
||
that the target is about to print out a status message of some sort. That
|
||
doesn't happen here (in fact, it may not be possible to get the monitor to
|
||
send the appropriate packet). */
|
||
|
||
flush_cached_frames ();
|
||
registers_changed ();
|
||
stop_pc = read_pc ();
|
||
set_current_frame (create_new_frame (read_fp (), stop_pc));
|
||
select_frame (get_current_frame (), 0);
|
||
print_stack_frame (selected_frame, -1, 1);
|
||
|
||
return 1;
|
||
}
|
||
|
||
/* Open a connection to a remote debugger.
|
||
NAME is the filename used for communication. */
|
||
|
||
static DCACHE *wiggler_dcache;
|
||
|
||
static void
|
||
wiggler_open (name, from_tty)
|
||
char *name;
|
||
int from_tty;
|
||
{
|
||
if (name == 0)
|
||
error ("To open a Wiggler connection, you need to specify what serial\n\
|
||
device the Wiggler is attached to (e.g. /dev/ttya).");
|
||
|
||
target_preopen (from_tty);
|
||
|
||
unpush_target (&wiggler_ops);
|
||
|
||
wiggler_dcache = dcache_init (wiggler_read_bytes, wiggler_write_bytes);
|
||
|
||
wiggler_desc = SERIAL_OPEN (name);
|
||
if (!wiggler_desc)
|
||
perror_with_name (name);
|
||
|
||
if (baud_rate != -1)
|
||
{
|
||
if (SERIAL_SETBAUDRATE (wiggler_desc, baud_rate))
|
||
{
|
||
SERIAL_CLOSE (wiggler_desc);
|
||
perror_with_name (name);
|
||
}
|
||
}
|
||
|
||
SERIAL_RAW (wiggler_desc);
|
||
|
||
/* If there is something sitting in the buffer we might take it as a
|
||
response to a command, which would be bad. */
|
||
SERIAL_FLUSH_INPUT (wiggler_desc);
|
||
|
||
if (from_tty)
|
||
{
|
||
puts_filtered ("Remote target wiggler connected to ");
|
||
puts_filtered (name);
|
||
puts_filtered ("\n");
|
||
}
|
||
push_target (&wiggler_ops); /* Switch to using remote target now */
|
||
|
||
/* Without this, some commands which require an active target (such as kill)
|
||
won't work. This variable serves (at least) double duty as both the pid
|
||
of the target process (if it has such), and as a flag indicating that a
|
||
target is active. These functions should be split out into seperate
|
||
variables, especially since GDB will someday have a notion of debugging
|
||
several processes. */
|
||
|
||
inferior_pid = 42000;
|
||
/* Start the remote connection; if error (0), discard this target.
|
||
In particular, if the user quits, be sure to discard it
|
||
(we'd be in an inconsistent state otherwise). */
|
||
if (!catch_errors (wiggler_start_remote, (char *)0,
|
||
"Couldn't establish connection to remote target\n", RETURN_MASK_ALL))
|
||
pop_target();
|
||
}
|
||
|
||
/* This takes a program previously attached to and detaches it. After
|
||
this is done, GDB can be used to debug some other program. We
|
||
better not have left any breakpoints in the target program or it'll
|
||
die when it hits one. */
|
||
|
||
static void
|
||
wiggler_detach (args, from_tty)
|
||
char *args;
|
||
int from_tty;
|
||
{
|
||
if (args)
|
||
error ("Argument given to \"detach\" when remotely debugging.");
|
||
|
||
pop_target ();
|
||
if (from_tty)
|
||
puts_filtered ("Ending remote debugging.\n");
|
||
}
|
||
|
||
/* Tell the remote machine to resume. */
|
||
|
||
static void
|
||
wiggler_resume (pid, step, siggnal)
|
||
int pid, step;
|
||
enum target_signal siggnal;
|
||
{
|
||
int pktlen;
|
||
|
||
dcache_flush (wiggler_dcache);
|
||
|
||
if (step)
|
||
do_command (WIGGLER_STEP, &last_run_status, &pktlen);
|
||
else
|
||
do_command (WIGGLER_RUN, &last_run_status, &pktlen);
|
||
}
|
||
|
||
static void
|
||
wiggler_stop ()
|
||
{
|
||
int status;
|
||
int pktlen;
|
||
|
||
do_command (WIGGLER_STOP, &status, &pktlen);
|
||
|
||
if (!(status & WIGGLER_FLAG_BDM))
|
||
error ("Can't stop target via BDM");
|
||
}
|
||
|
||
static volatile int wiggler_interrupt_flag;
|
||
|
||
/* Send ^C to target to halt it. Target will respond, and send us a
|
||
packet. */
|
||
|
||
static void
|
||
wiggler_interrupt (signo)
|
||
int signo;
|
||
{
|
||
/* If this doesn't work, try more severe steps. */
|
||
signal (signo, wiggler_interrupt_twice);
|
||
|
||
if (remote_debug)
|
||
printf_unfiltered ("wiggler_interrupt called\n");
|
||
|
||
{
|
||
char buf[1];
|
||
|
||
wiggler_stop ();
|
||
buf[0] = WIGGLER_AYT;
|
||
put_packet (buf, 1);
|
||
wiggler_interrupt_flag = 1;
|
||
}
|
||
}
|
||
|
||
static void (*ofunc)();
|
||
|
||
/* The user typed ^C twice. */
|
||
static void
|
||
wiggler_interrupt_twice (signo)
|
||
int signo;
|
||
{
|
||
signal (signo, ofunc);
|
||
|
||
interrupt_query ();
|
||
|
||
signal (signo, wiggler_interrupt);
|
||
}
|
||
|
||
/* Ask the user what to do when an interrupt is received. */
|
||
|
||
static void
|
||
interrupt_query ()
|
||
{
|
||
target_terminal_ours ();
|
||
|
||
if (query ("Interrupted while waiting for the program.\n\
|
||
Give up (and stop debugging it)? "))
|
||
{
|
||
target_mourn_inferior ();
|
||
return_to_top_level (RETURN_QUIT);
|
||
}
|
||
|
||
target_terminal_inferior ();
|
||
}
|
||
|
||
/* If nonzero, ignore the next kill. */
|
||
static int kill_kludge;
|
||
|
||
/* Wait until the remote machine stops, then return,
|
||
storing status in STATUS just as `wait' would.
|
||
Returns "pid" (though it's not clear what, if anything, that
|
||
means in the case of this target). */
|
||
|
||
static int
|
||
wiggler_wait (pid, target_status)
|
||
int pid;
|
||
struct target_waitstatus *target_status;
|
||
{
|
||
unsigned char *p;
|
||
int error_code, status;
|
||
int pktlen;
|
||
|
||
wiggler_interrupt_flag = 0;
|
||
|
||
target_status->kind = TARGET_WAITKIND_STOPPED;
|
||
target_status->value.sig = TARGET_SIGNAL_TRAP;
|
||
|
||
/* Target may already be stopped by the time we get here. */
|
||
|
||
if (!(last_run_status & WIGGLER_FLAG_BDM))
|
||
{
|
||
ofunc = (void (*)()) signal (SIGINT, wiggler_interrupt);
|
||
|
||
p = get_packet (WIGGLER_AYT, &pktlen, -1);
|
||
|
||
signal (SIGINT, ofunc);
|
||
|
||
if (pktlen < 2)
|
||
error ("Truncated response packet from Wiggler");
|
||
|
||
status = p[1];
|
||
error_code = p[2];
|
||
|
||
if (error_code != 0)
|
||
wiggler_error ("target_wait:", error_code);
|
||
|
||
if (status & WIGGLER_FLAG_PWF)
|
||
error ("Wiggler lost VCC at BDM interface.");
|
||
else if (status & WIGGLER_FLAG_CABLE_DISC)
|
||
error ("BDM cable appears to have been disconnected.");
|
||
|
||
if (!(status & WIGGLER_FLAG_BDM))
|
||
error ("Wiggler woke up, but wasn't stopped: 0x%x", status);
|
||
|
||
if (wiggler_interrupt_flag)
|
||
target_status->value.sig = TARGET_SIGNAL_INT;
|
||
}
|
||
|
||
/* This test figures out if we just executed a BGND insn, and if it's one of
|
||
our breakpoints. If so, then we back up PC. N.B. When a BGND insn is
|
||
executed, the PC points at the loc just after the insn (ie: it's always
|
||
two bytes *after* the BGND). So, it's not sufficient to just see if PC-2
|
||
is a BGND insn because we could have gotten there via a jump. We dis-
|
||
ambiguate this case by examining the ATEMP register (which is only
|
||
accessible from BDM). This will tell us if we entered BDM because we
|
||
executed a BGND insn. */
|
||
|
||
if (breakpoint_inserted_here_p (read_pc () - 2)) /* One of our breakpoints? */
|
||
{ /* Yes, see if we actually executed it */
|
||
#if 0 /* Temporarily disabled until atemp reading is fixed. */
|
||
int atemp;
|
||
int numregs;
|
||
|
||
p = read_bdm_registers (23, 23, &numregs);
|
||
atemp = extract_unsigned_integer (p, 4);
|
||
|
||
if (atemp == 1) /* And, did we hit a breakpoint insn? */
|
||
#endif
|
||
write_pc (read_pc () - 2); /* Yes, then back up PC */
|
||
}
|
||
|
||
return inferior_pid;
|
||
}
|
||
|
||
/* Read the remote registers into the block REGS. */
|
||
/* Currently we just read all the registers, so we don't use regno. */
|
||
/* ARGSUSED */
|
||
|
||
static unsigned char *
|
||
read_bdm_registers (first_bdm_regno, last_bdm_regno, numregs)
|
||
int first_bdm_regno;
|
||
int last_bdm_regno;
|
||
int *numregs;
|
||
{
|
||
unsigned char buf[10];
|
||
int i;
|
||
unsigned char *p;
|
||
unsigned char *regs;
|
||
int error_code, status;
|
||
int pktlen;
|
||
|
||
buf[0] = WIGGLER_READ_REGS;
|
||
buf[1] = first_bdm_regno >> 8;
|
||
buf[2] = first_bdm_regno & 0xff;
|
||
buf[3] = last_bdm_regno >> 8;
|
||
buf[4] = last_bdm_regno & 0xff;
|
||
|
||
put_packet (buf, 5);
|
||
p = get_packet (WIGGLER_READ_REGS, &pktlen, remote_timeout);
|
||
|
||
if (pktlen < 5)
|
||
error ("Truncated response packet from Wiggler");
|
||
|
||
status = p[1];
|
||
error_code = p[2];
|
||
|
||
if (error_code != 0)
|
||
wiggler_error ("read_bdm_registers:", error_code);
|
||
|
||
i = p[3];
|
||
if (i == 0)
|
||
i = 256;
|
||
|
||
if (i > pktlen - 4
|
||
|| ((i & 3) != 0))
|
||
error ("Register block size bad: %d", i);
|
||
|
||
*numregs = i / 4;
|
||
|
||
regs = p + 4;
|
||
|
||
return regs;
|
||
}
|
||
|
||
static void
|
||
dump_all_bdm_regs ()
|
||
{
|
||
unsigned char *regs;
|
||
int numregs;
|
||
int i;
|
||
|
||
regs = read_bdm_registers (0, BDM_NUM_REGS - 1, &numregs);
|
||
|
||
printf_unfiltered ("rpc = 0x%x ",
|
||
(int)extract_unsigned_integer (regs, 4));
|
||
regs += 4;
|
||
printf_unfiltered ("usp = 0x%x ",
|
||
(int)extract_unsigned_integer (regs, 4));
|
||
regs += 4;
|
||
printf_unfiltered ("ssp = 0x%x ",
|
||
(int)extract_unsigned_integer (regs, 4));
|
||
regs += 4;
|
||
printf_unfiltered ("vbr = 0x%x ",
|
||
(int)extract_unsigned_integer (regs, 4));
|
||
regs += 4;
|
||
printf_unfiltered ("sr = 0x%x ",
|
||
(int)extract_unsigned_integer (regs, 4));
|
||
regs += 4;
|
||
printf_unfiltered ("sfc = 0x%x ",
|
||
(int)extract_unsigned_integer (regs, 4));
|
||
regs += 4;
|
||
printf_unfiltered ("dfc = 0x%x ",
|
||
(int)extract_unsigned_integer (regs, 4));
|
||
regs += 4;
|
||
printf_unfiltered ("atemp = 0x%x ",
|
||
(int)extract_unsigned_integer (regs, 4));
|
||
regs += 4;
|
||
printf_unfiltered ("\n");
|
||
|
||
for (i = 0; i <= 7; i++)
|
||
printf_unfiltered ("d%i = 0x%x ", i,
|
||
(int)extract_unsigned_integer (regs + i * 4, 4));
|
||
regs += 8 * 4;
|
||
printf_unfiltered ("\n");
|
||
|
||
for (i = 0; i <= 7; i++)
|
||
printf_unfiltered ("a%i = 0x%x ", i,
|
||
(int)extract_unsigned_integer (regs + i * 4, 4));
|
||
printf_unfiltered ("\n");
|
||
}
|
||
|
||
static int bdm_regmap[] = {BDM_REGMAP};
|
||
|
||
/* Read the remote registers into the block REGS. */
|
||
/* Currently we just read all the registers, so we don't use regno. */
|
||
/* ARGSUSED */
|
||
static void
|
||
wiggler_fetch_registers (regno)
|
||
int regno;
|
||
{
|
||
int i;
|
||
unsigned char *regs;
|
||
int first_regno, last_regno;
|
||
int first_bdm_regno, last_bdm_regno;
|
||
int numregs;
|
||
|
||
if (regno == -1)
|
||
{
|
||
first_regno = 0;
|
||
last_regno = NUM_REGS - 1;
|
||
|
||
first_bdm_regno = 0;
|
||
last_bdm_regno = BDM_NUM_REGS - 1;
|
||
}
|
||
else
|
||
{
|
||
first_regno = regno;
|
||
last_regno = regno;
|
||
|
||
first_bdm_regno = bdm_regmap [regno];
|
||
last_bdm_regno = bdm_regmap [regno];
|
||
}
|
||
|
||
if (first_bdm_regno == -1)
|
||
{
|
||
supply_register (first_regno, NULL);
|
||
return; /* Unsupported register */
|
||
}
|
||
|
||
regs = read_bdm_registers (first_bdm_regno, last_bdm_regno, &numregs);
|
||
|
||
for (i = first_regno; i <= last_regno; i++)
|
||
{
|
||
int bdm_regno, regoffset;
|
||
|
||
bdm_regno = bdm_regmap [i];
|
||
if (bdm_regno != -1)
|
||
{
|
||
regoffset = bdm_regno - first_bdm_regno;
|
||
|
||
if (regoffset >= numregs)
|
||
continue;
|
||
|
||
supply_register (i, regs + 4 * regoffset);
|
||
}
|
||
else
|
||
supply_register (i, NULL); /* Unsupported register */
|
||
}
|
||
}
|
||
|
||
static void
|
||
wiggler_prepare_to_store ()
|
||
{
|
||
}
|
||
|
||
/* Store register REGNO, or all registers if REGNO == -1, from the contents
|
||
of REGISTERS. FIXME: ignores errors. */
|
||
|
||
static void
|
||
wiggler_store_registers (regno)
|
||
int regno;
|
||
{
|
||
unsigned char buf[10 + 256];
|
||
int i;
|
||
unsigned char *p;
|
||
int error_code, status;
|
||
int pktlen;
|
||
int first_regno, last_regno;
|
||
int first_bdm_regno, last_bdm_regno;
|
||
|
||
if (regno == -1)
|
||
{
|
||
first_regno = 0;
|
||
last_regno = NUM_REGS - 1;
|
||
|
||
first_bdm_regno = 0;
|
||
last_bdm_regno = BDM_NUM_REGS - 1;
|
||
}
|
||
else
|
||
{
|
||
first_regno = regno;
|
||
last_regno = regno;
|
||
|
||
first_bdm_regno = bdm_regmap [regno];
|
||
last_bdm_regno = bdm_regmap [regno];
|
||
}
|
||
|
||
if (first_bdm_regno == -1)
|
||
return; /* Unsupported register */
|
||
|
||
buf[0] = WIGGLER_WRITE_REGS;
|
||
buf[3] = 4;
|
||
|
||
for (i = first_regno; i <= last_regno; i++)
|
||
{
|
||
int bdm_regno;
|
||
|
||
bdm_regno = bdm_regmap [i];
|
||
|
||
buf[1] = bdm_regno >> 8;
|
||
buf[2] = bdm_regno & 0xff;
|
||
|
||
memcpy (&buf[4], ®isters[REGISTER_BYTE (i)], 4);
|
||
put_packet (buf, 4 + 4);
|
||
p = get_packet (WIGGLER_WRITE_REGS, &pktlen, remote_timeout);
|
||
|
||
if (pktlen < 3)
|
||
error ("Truncated response packet from Wiggler");
|
||
|
||
status = p[1];
|
||
error_code = p[2];
|
||
|
||
if (error_code != 0)
|
||
wiggler_error ("wiggler_store_registers:", error_code);
|
||
}
|
||
}
|
||
|
||
/* Write memory data directly to the remote machine.
|
||
This does not inform the data cache; the data cache uses this.
|
||
MEMADDR is the address in the remote memory space.
|
||
MYADDR is the address of the buffer in our space.
|
||
LEN is the number of bytes.
|
||
|
||
Returns number of bytes transferred, or 0 for error. */
|
||
|
||
static int
|
||
wiggler_write_bytes (memaddr, myaddr, len)
|
||
CORE_ADDR memaddr;
|
||
char *myaddr;
|
||
int len;
|
||
{
|
||
char buf[256 + 10];
|
||
unsigned char *p;
|
||
int origlen;
|
||
|
||
origlen = len;
|
||
|
||
buf[0] = WIGGLER_WRITE_MEM;
|
||
buf[5] = 1; /* Write as bytes */
|
||
buf[6] = 0; /* Don't verify */
|
||
|
||
while (len > 0)
|
||
{
|
||
int numbytes;
|
||
int pktlen;
|
||
int status, error_code;
|
||
|
||
numbytes = min (len, 256 - 8);
|
||
|
||
buf[1] = memaddr >> 24;
|
||
buf[2] = memaddr >> 16;
|
||
buf[3] = memaddr >> 8;
|
||
buf[4] = memaddr;
|
||
|
||
buf[7] = numbytes;
|
||
|
||
memcpy (&buf[8], myaddr, numbytes);
|
||
put_packet (buf, 8 + numbytes);
|
||
p = get_packet (WIGGLER_WRITE_MEM, &pktlen, remote_timeout);
|
||
if (pktlen < 3)
|
||
error ("Truncated response packet from Wiggler");
|
||
|
||
status = p[1];
|
||
error_code = p[2];
|
||
|
||
if (error_code == 0x11) /* Got a bus error? */
|
||
{
|
||
CORE_ADDR error_address;
|
||
|
||
error_address = p[3] << 24;
|
||
error_address |= p[4] << 16;
|
||
error_address |= p[5] << 8;
|
||
error_address |= p[6];
|
||
numbytes = error_address - memaddr;
|
||
|
||
len -= numbytes;
|
||
|
||
errno = EIO;
|
||
|
||
break;
|
||
}
|
||
else if (error_code != 0)
|
||
wiggler_error ("wiggler_write_bytes:", error_code);
|
||
|
||
len -= numbytes;
|
||
memaddr += numbytes;
|
||
myaddr += numbytes;
|
||
}
|
||
|
||
return origlen - len;
|
||
}
|
||
|
||
/* Read memory data directly from the remote machine.
|
||
This does not use the data cache; the data cache uses this.
|
||
MEMADDR is the address in the remote memory space.
|
||
MYADDR is the address of the buffer in our space.
|
||
LEN is the number of bytes.
|
||
|
||
Returns number of bytes transferred, or 0 for error. */
|
||
|
||
static int
|
||
wiggler_read_bytes (memaddr, myaddr, len)
|
||
CORE_ADDR memaddr;
|
||
char *myaddr;
|
||
int len;
|
||
{
|
||
char buf[256 + 10];
|
||
unsigned char *p;
|
||
int origlen;
|
||
|
||
origlen = len;
|
||
|
||
buf[0] = WIGGLER_READ_MEM;
|
||
buf[5] = 1; /* Read as bytes */
|
||
|
||
while (len > 0)
|
||
{
|
||
int numbytes;
|
||
int pktlen;
|
||
int status, error_code;
|
||
|
||
numbytes = min (len, 256 - 7);
|
||
|
||
buf[1] = memaddr >> 24;
|
||
buf[2] = memaddr >> 16;
|
||
buf[3] = memaddr >> 8;
|
||
buf[4] = memaddr;
|
||
|
||
buf[6] = numbytes;
|
||
|
||
put_packet (buf, 7);
|
||
p = get_packet (WIGGLER_READ_MEM, &pktlen, remote_timeout);
|
||
if (pktlen < 4)
|
||
error ("Truncated response packet from Wiggler");
|
||
|
||
status = p[1];
|
||
error_code = p[2];
|
||
|
||
if (error_code == 0x11) /* Got a bus error? */
|
||
{
|
||
CORE_ADDR error_address;
|
||
|
||
error_address = p[3] << 24;
|
||
error_address |= p[4] << 16;
|
||
error_address |= p[5] << 8;
|
||
error_address |= p[6];
|
||
numbytes = error_address - memaddr;
|
||
|
||
len -= numbytes;
|
||
|
||
errno = EIO;
|
||
|
||
break;
|
||
}
|
||
else if (error_code != 0)
|
||
wiggler_error ("wiggler_read_bytes:", error_code);
|
||
|
||
memcpy (myaddr, &p[4], numbytes);
|
||
|
||
len -= numbytes;
|
||
memaddr += numbytes;
|
||
myaddr += numbytes;
|
||
}
|
||
|
||
return origlen - len;
|
||
}
|
||
|
||
/* Read or write LEN bytes from inferior memory at MEMADDR, transferring
|
||
to or from debugger address MYADDR. Write to inferior if SHOULD_WRITE is
|
||
nonzero. Returns length of data written or read; 0 for error. */
|
||
|
||
/* ARGSUSED */
|
||
static int
|
||
wiggler_xfer_memory (memaddr, myaddr, len, should_write, target)
|
||
CORE_ADDR memaddr;
|
||
char *myaddr;
|
||
int len;
|
||
int should_write;
|
||
struct target_ops *target; /* ignored */
|
||
{
|
||
return dcache_xfer_memory (wiggler_dcache, memaddr, myaddr, len, should_write);
|
||
}
|
||
|
||
static void
|
||
wiggler_files_info (ignore)
|
||
struct target_ops *ignore;
|
||
{
|
||
puts_filtered ("Debugging a target over a serial line.\n");
|
||
}
|
||
|
||
/* Stuff for dealing with the packets which are part of this protocol.
|
||
See comment at top of file for details. */
|
||
|
||
/* Read a single character from the remote side, handling wierd errors. */
|
||
|
||
static int
|
||
readchar (timeout)
|
||
int timeout;
|
||
{
|
||
int ch;
|
||
|
||
ch = SERIAL_READCHAR (wiggler_desc, timeout);
|
||
|
||
switch (ch)
|
||
{
|
||
case SERIAL_EOF:
|
||
error ("Remote connection closed");
|
||
case SERIAL_ERROR:
|
||
perror_with_name ("Remote communication error");
|
||
case SERIAL_TIMEOUT:
|
||
default:
|
||
return ch;
|
||
}
|
||
}
|
||
|
||
#if 0
|
||
/* Read a character from the data stream, dequoting as necessary. SYN is
|
||
treated special. Any SYNs appearing in the data stream are returned as the
|
||
distinct value RAW_SYN (which has a value > 8 bits and therefore cannot be
|
||
mistaken for real data). */
|
||
|
||
static int
|
||
get_quoted_char (timeout)
|
||
int timeout;
|
||
{
|
||
int ch;
|
||
|
||
ch = readchar (timeout);
|
||
|
||
switch (ch)
|
||
{
|
||
case SERIAL_TIMEOUT:
|
||
error ("Timeout in mid-packet, aborting");
|
||
case SYN:
|
||
return RAW_SYN;
|
||
case DLE:
|
||
ch = readchar (timeout);
|
||
if (ch == SYN)
|
||
return RAW_SYN;
|
||
return ch & ~0100;
|
||
default:
|
||
return ch;
|
||
}
|
||
}
|
||
|
||
static unsigned char pkt[256 * 2 + 10], *pktp; /* Worst case */
|
||
|
||
static void
|
||
reset_packet ()
|
||
{
|
||
pktp = pkt;
|
||
}
|
||
|
||
static void
|
||
output_packet ()
|
||
{
|
||
if (SERIAL_WRITE (wiggler_desc, pkt, pktp - pkt))
|
||
perror_with_name ("output_packet: write failed");
|
||
|
||
reset_packet ();
|
||
}
|
||
|
||
/* Output a quoted character. SYNs and DLEs are quoted. Everything else goes
|
||
through untouched. */
|
||
|
||
static void
|
||
put_quoted_char (c)
|
||
int c;
|
||
{
|
||
switch (c)
|
||
{
|
||
case SYN:
|
||
case DLE:
|
||
*pktp++ = DLE;
|
||
c |= 0100;
|
||
}
|
||
|
||
*pktp++ = c;
|
||
}
|
||
|
||
/* Send a packet to the Wiggler. The packet framed by a SYN character, a byte
|
||
count and a checksum. The byte count only counts the number of bytes
|
||
between the count and the checksum. A count of zero actually means 256.
|
||
Any SYNs within the packet (including the checksum and count) must be
|
||
quoted. The quote character must be quoted as well. Quoting is done by
|
||
replacing the character with the two-character sequence DLE, {char} | 0100.
|
||
Note that the quoting mechanism has no effect on the byte count.
|
||
*/
|
||
|
||
static void
|
||
stu_put_packet (buf, len)
|
||
unsigned char *buf;
|
||
int len;
|
||
{
|
||
unsigned char checksum;
|
||
unsigned char c;
|
||
|
||
if (len == 0 || len > 256)
|
||
abort (); /* Can't represent 0 length packet */
|
||
|
||
reset_packet ();
|
||
|
||
checksum = 0;
|
||
|
||
put_quoted_char (RAW_SYN);
|
||
|
||
c = len;
|
||
|
||
do
|
||
{
|
||
checksum += c;
|
||
|
||
put_quoted_char (c);
|
||
|
||
c = *buf++;
|
||
}
|
||
while (len-- > 0);
|
||
|
||
put_quoted_char (-checksum & 0xff);
|
||
|
||
output_packet ();
|
||
}
|
||
|
||
#else
|
||
|
||
/* Send a packet to the Wiggler. The packet framed by a SYN character, a byte
|
||
count and a checksum. The byte count only counts the number of bytes
|
||
between the count and the checksum. A count of zero actually means 256.
|
||
Any SYNs within the packet (including the checksum and count) must be
|
||
quoted. The quote character must be quoted as well. Quoting is done by
|
||
replacing the character with the two-character sequence DLE, {char} | 0100.
|
||
Note that the quoting mechanism has no effect on the byte count.
|
||
*/
|
||
|
||
static void
|
||
put_packet (buf, len)
|
||
unsigned char *buf;
|
||
int len;
|
||
{
|
||
unsigned char checksum;
|
||
unsigned char c;
|
||
unsigned char *packet, *packet_ptr;
|
||
|
||
packet = alloca (len + 1 + 1); /* packet + SYN + checksum */
|
||
packet_ptr = packet;
|
||
|
||
checksum = 0;
|
||
|
||
*packet_ptr++ = 0x55;
|
||
|
||
while (len-- > 0)
|
||
{
|
||
c = *buf++;
|
||
|
||
checksum += c;
|
||
*packet_ptr++ = c;
|
||
}
|
||
|
||
*packet_ptr++ = -checksum;
|
||
if (SERIAL_WRITE (wiggler_desc, packet, packet_ptr - packet))
|
||
perror_with_name ("output_packet: write failed");
|
||
}
|
||
#endif
|
||
|
||
#if 0
|
||
/* Get a packet from the Wiggler. Timeout is only enforced for the first byte
|
||
of the packet. Subsequent bytes are expected to arrive in time <=
|
||
remote_timeout. Returns a pointer to a static buffer containing the payload
|
||
of the packet. *LENP contains the length of the packet.
|
||
*/
|
||
|
||
static unsigned char *
|
||
stu_get_packet (cmd, lenp, timeout)
|
||
unsigned char cmd;
|
||
int *lenp;
|
||
{
|
||
int ch;
|
||
int len;
|
||
static unsigned char buf[256 + 10], *p;
|
||
unsigned char checksum;
|
||
|
||
find_packet:
|
||
|
||
ch = get_quoted_char (timeout);
|
||
|
||
if (ch < 0)
|
||
error ("get_packet (readchar): %d", ch);
|
||
|
||
if (ch != RAW_SYN)
|
||
goto find_packet;
|
||
|
||
found_syn: /* Found the start of a packet */
|
||
|
||
p = buf;
|
||
checksum = 0;
|
||
|
||
len = get_quoted_char (remote_timeout);
|
||
|
||
if (len == RAW_SYN)
|
||
goto found_syn;
|
||
|
||
checksum += len;
|
||
|
||
if (len == 0)
|
||
len = 256;
|
||
|
||
len++; /* Include checksum */
|
||
|
||
while (len-- > 0)
|
||
{
|
||
ch = get_quoted_char (remote_timeout);
|
||
if (ch == RAW_SYN)
|
||
goto found_syn;
|
||
|
||
*p++ = ch;
|
||
checksum += ch;
|
||
}
|
||
|
||
if (checksum != 0)
|
||
goto find_packet;
|
||
|
||
if (cmd != buf[0])
|
||
error ("Response phase error. Got 0x%x, expected 0x%x", buf[0], cmd);
|
||
|
||
*lenp = p - buf - 1;
|
||
return buf;
|
||
}
|
||
|
||
#else
|
||
|
||
/* Get a packet from the Wiggler. Timeout is only enforced for the first byte
|
||
of the packet. Subsequent bytes are expected to arrive in time <=
|
||
remote_timeout. Returns a pointer to a static buffer containing the payload
|
||
of the packet. *LENP contains the length of the packet.
|
||
*/
|
||
|
||
static unsigned char *
|
||
get_packet (cmd, lenp, timeout)
|
||
int cmd;
|
||
int *lenp;
|
||
{
|
||
int ch;
|
||
int len;
|
||
int i;
|
||
static unsigned char packet[512];
|
||
unsigned char *packet_ptr;
|
||
unsigned char checksum;
|
||
|
||
find_packet:
|
||
|
||
ch = readchar (timeout);
|
||
|
||
if (ch < 0)
|
||
error ("get_packet (readchar): %d", ch);
|
||
|
||
if (ch != 0x55)
|
||
goto find_packet;
|
||
|
||
/* Found the start of a packet */
|
||
|
||
packet_ptr = packet;
|
||
checksum = 0;
|
||
|
||
/* Read command char. That sort of tells us how long the packet is. */
|
||
|
||
ch = readchar (timeout);
|
||
|
||
if (ch < 0)
|
||
error ("get_packet (readchar): %d", ch);
|
||
|
||
*packet_ptr++ = ch;
|
||
checksum += ch;
|
||
|
||
/* Get status. */
|
||
|
||
ch = readchar (timeout);
|
||
|
||
if (ch < 0)
|
||
error ("get_packet (readchar): %d", ch);
|
||
*packet_ptr++ = ch;
|
||
checksum += ch;
|
||
|
||
/* Get error code. */
|
||
|
||
ch = readchar (timeout);
|
||
|
||
if (ch < 0)
|
||
error ("get_packet (readchar): %d", ch);
|
||
*packet_ptr++ = ch;
|
||
checksum += ch;
|
||
|
||
switch (ch) /* Figure out length of packet */
|
||
{
|
||
case 0x7: /* Write verify error? */
|
||
len = 8; /* write address, value read back */
|
||
break;
|
||
case 0x11: /* Bus error? */
|
||
/* write address, read flag */
|
||
case 0x15: /* Internal error */
|
||
len = 5; /* error code, vector */
|
||
break;
|
||
default: /* Error w/no params */
|
||
len = 0;
|
||
case 0x0: /* Normal result */
|
||
switch (packet[0])
|
||
{
|
||
case WIGGLER_AYT: /* Are You There? */
|
||
case WIGGLER_SET_BAUD_RATE: /* Set Baud Rate */
|
||
case WIGGLER_INIT: /* Initialize wiggler */
|
||
case WIGGLER_SET_SPEED: /* Set Speed */
|
||
case WIGGLER_SET_FUNC_CODE: /* Set Function Code */
|
||
case WIGGLER_SET_CTL_FLAGS: /* Set Control Flags */
|
||
case WIGGLER_SET_BUF_ADDR: /* Set Register Buffer Address */
|
||
case WIGGLER_RUN: /* Run Target from PC */
|
||
case WIGGLER_RUN_ADDR: /* Run Target from Specified Address */
|
||
case WIGGLER_STOP: /* Stop Target */
|
||
case WIGGLER_RESET_RUN: /* Reset Target and Run */
|
||
case WIGGLER_RESET: /* Reset Target and Halt */
|
||
case WIGGLER_STEP: /* Single Step */
|
||
case WIGGLER_WRITE_REGS: /* Write Register */
|
||
case WIGGLER_WRITE_MEM: /* Write Memory */
|
||
case WIGGLER_FILL_MEM: /* Fill Memory */
|
||
case WIGGLER_MOVE_MEM: /* Move Memory */
|
||
case WIGGLER_WRITE_INT_MEM: /* Write Internal Memory */
|
||
case WIGGLER_JUMP: /* Jump to Subroutine */
|
||
case WIGGLER_ERASE_FLASH: /* Erase flash memory */
|
||
case WIGGLER_PROGRAM_FLASH: /* Write flash memory */
|
||
case WIGGLER_EXIT_MON: /* Exit the flash programming monitor */
|
||
case WIGGLER_ENTER_MON: /* Enter the flash programming monitor */
|
||
len = 0;
|
||
break;
|
||
case WIGGLER_GET_VERSION: /* Get Version */
|
||
len = 4;
|
||
break;
|
||
case WIGGLER_GET_STATUS_MASK: /* Get Status Mask */
|
||
len = 1;
|
||
break;
|
||
case WIGGLER_GET_CTRS: /* Get Error Counters */
|
||
case WIGGLER_READ_REGS: /* Read Register */
|
||
case WIGGLER_READ_MEM: /* Read Memory */
|
||
case WIGGLER_READ_INT_MEM: /* Read Internal Memory */
|
||
len = 257;
|
||
break;
|
||
default:
|
||
fprintf_filtered (gdb_stderr, "Unknown packet type 0x%x\n", ch);
|
||
goto find_packet;
|
||
}
|
||
}
|
||
|
||
if (len == 257) /* Byte stream? */
|
||
{ /* Yes, byte streams contain the length */
|
||
ch = readchar (timeout);
|
||
|
||
if (ch < 0)
|
||
error ("get_packet (readchar): %d", ch);
|
||
*packet_ptr++ = ch;
|
||
checksum += ch;
|
||
len = ch;
|
||
if (len == 0)
|
||
len = 256;
|
||
}
|
||
|
||
while (len-- >= 0) /* Do rest of packet and checksum */
|
||
{
|
||
ch = readchar (timeout);
|
||
|
||
if (ch < 0)
|
||
error ("get_packet (readchar): %d", ch);
|
||
*packet_ptr++ = ch;
|
||
checksum += ch;
|
||
}
|
||
|
||
if (checksum != 0)
|
||
goto find_packet;
|
||
|
||
if (cmd != -1 && cmd != packet[0])
|
||
error ("Response phase error. Got 0x%x, expected 0x%x", packet[0], cmd);
|
||
|
||
*lenp = packet_ptr - packet - 1; /* Subtract checksum byte */
|
||
return packet;
|
||
}
|
||
#endif
|
||
|
||
/* Execute a simple (one-byte) command. Returns a pointer to the data
|
||
following the error code. */
|
||
|
||
static unsigned char *
|
||
do_command (cmd, statusp, lenp)
|
||
int cmd;
|
||
int *statusp;
|
||
int *lenp;
|
||
{
|
||
unsigned char buf[100], *p;
|
||
int status, error_code;
|
||
char errbuf[100];
|
||
|
||
buf[0] = cmd;
|
||
put_packet (buf, 1); /* Send command */
|
||
p = get_packet (*buf, lenp, remote_timeout);
|
||
|
||
if (*lenp < 3)
|
||
error ("Truncated response packet from Wiggler");
|
||
|
||
status = p[1];
|
||
error_code = p[2];
|
||
|
||
if (error_code != 0)
|
||
{
|
||
sprintf (errbuf, "do_command (0x%x):", cmd);
|
||
wiggler_error (errbuf, error_code);
|
||
}
|
||
|
||
if (status & WIGGLER_FLAG_PWF)
|
||
error ("Wiggler can't detect VCC at BDM interface.");
|
||
else if (status & WIGGLER_FLAG_CABLE_DISC)
|
||
error ("BDM cable appears to be disconnected.");
|
||
|
||
*statusp = status;
|
||
|
||
return p + 3;
|
||
}
|
||
|
||
static void
|
||
wiggler_kill ()
|
||
{
|
||
/* For some mysterious reason, wait_for_inferior calls kill instead of
|
||
mourn after it gets TARGET_WAITKIND_SIGNALLED. Work around it. */
|
||
if (kill_kludge)
|
||
{
|
||
kill_kludge = 0;
|
||
target_mourn_inferior ();
|
||
return;
|
||
}
|
||
|
||
/* Don't wait for it to die. I'm not really sure it matters whether
|
||
we do or not. */
|
||
target_mourn_inferior ();
|
||
}
|
||
|
||
static void
|
||
wiggler_mourn ()
|
||
{
|
||
unpush_target (&wiggler_ops);
|
||
generic_mourn_inferior ();
|
||
}
|
||
|
||
/* All we actually do is set the PC to the start address of exec_bfd, and start
|
||
the program at that point. */
|
||
|
||
static void
|
||
wiggler_create_inferior (exec_file, args, env)
|
||
char *exec_file;
|
||
char *args;
|
||
char **env;
|
||
{
|
||
if (args && (*args != '\000'))
|
||
error ("Args are not supported by BDM.");
|
||
|
||
clear_proceed_status ();
|
||
proceed (bfd_get_start_address (exec_bfd), TARGET_SIGNAL_0, 0);
|
||
}
|
||
|
||
static void
|
||
wiggler_load (args, from_tty)
|
||
char *args;
|
||
int from_tty;
|
||
{
|
||
generic_load (args, from_tty);
|
||
|
||
inferior_pid = 0;
|
||
|
||
/* This is necessary because many things were based on the PC at the time that
|
||
we attached to the monitor, which is no longer valid now that we have loaded
|
||
new code (and just changed the PC). Another way to do this might be to call
|
||
normal_stop, except that the stack may not be valid, and things would get
|
||
horribly confused... */
|
||
|
||
clear_symtab_users ();
|
||
}
|
||
|
||
/* BDM (at least on CPU32) uses a different breakpoint */
|
||
|
||
static int
|
||
wiggler_insert_breakpoint (addr, contents_cache)
|
||
CORE_ADDR addr;
|
||
char *contents_cache;
|
||
{
|
||
static char break_insn[] = {BDM_BREAKPOINT};
|
||
int val;
|
||
|
||
val = target_read_memory (addr, contents_cache, sizeof break_insn);
|
||
|
||
if (val == 0)
|
||
val = target_write_memory (addr, break_insn, sizeof break_insn);
|
||
|
||
return val;
|
||
}
|
||
|
||
static void
|
||
bdm_command (args, from_tty)
|
||
char *args;
|
||
int from_tty;
|
||
{
|
||
error ("bdm command must be followed by `reset'");
|
||
}
|
||
|
||
static void
|
||
bdm_reset_command (args, from_tty)
|
||
char *args;
|
||
int from_tty;
|
||
{
|
||
int status, pktlen;
|
||
|
||
if (!wiggler_desc)
|
||
error ("Not connected to wiggler.");
|
||
|
||
do_command (WIGGLER_RESET, &status, &pktlen);
|
||
dcache_flush (wiggler_dcache);
|
||
registers_changed ();
|
||
}
|
||
|
||
static void
|
||
bdm_restart_command (args, from_tty)
|
||
char *args;
|
||
int from_tty;
|
||
{
|
||
int status, pktlen;
|
||
|
||
if (!wiggler_desc)
|
||
error ("Not connected to wiggler.");
|
||
|
||
do_command (WIGGLER_RESET_RUN, &status, &pktlen);
|
||
last_run_status = status;
|
||
clear_proceed_status ();
|
||
wait_for_inferior ();
|
||
normal_stop ();
|
||
}
|
||
|
||
static int
|
||
flash_xfer_memory (memaddr, myaddr, len, should_write, target)
|
||
CORE_ADDR memaddr;
|
||
char *myaddr;
|
||
int len;
|
||
int should_write;
|
||
struct target_ops *target; /* ignored */
|
||
{
|
||
char buf[256 + 10];
|
||
unsigned char *p;
|
||
int origlen;
|
||
|
||
if (!should_write)
|
||
abort ();
|
||
|
||
origlen = len;
|
||
|
||
buf[0] = WIGGLER_PROGRAM_FLASH;
|
||
|
||
while (len > 0)
|
||
{
|
||
int numbytes;
|
||
int pktlen;
|
||
int status, error_code;
|
||
|
||
numbytes = min (len, 256 - 6);
|
||
|
||
buf[1] = memaddr >> 24;
|
||
buf[2] = memaddr >> 16;
|
||
buf[3] = memaddr >> 8;
|
||
buf[4] = memaddr;
|
||
|
||
buf[5] = numbytes;
|
||
|
||
memcpy (&buf[6], myaddr, numbytes);
|
||
put_packet (buf, 6 + numbytes);
|
||
p = get_packet (WIGGLER_PROGRAM_FLASH, &pktlen, remote_timeout);
|
||
if (pktlen < 3)
|
||
error ("Truncated response packet from Wiggler");
|
||
|
||
status = p[1];
|
||
error_code = p[2];
|
||
|
||
if (error_code != 0)
|
||
wiggler_error ("flash_xfer_memory:", error_code);
|
||
|
||
len -= numbytes;
|
||
memaddr += numbytes;
|
||
myaddr += numbytes;
|
||
}
|
||
|
||
return origlen - len;
|
||
}
|
||
|
||
static void
|
||
bdm_update_flash_command (args, from_tty)
|
||
char *args;
|
||
int from_tty;
|
||
{
|
||
int status, pktlen;
|
||
struct cleanup *old_chain;
|
||
|
||
if (!wiggler_desc)
|
||
error ("Not connected to wiggler.");
|
||
|
||
if (!args)
|
||
error ("Must specify file containing new Wiggler code.");
|
||
|
||
/* old_chain = make_cleanup (flash_cleanup, 0);*/
|
||
|
||
do_command (WIGGLER_ENTER_MON, &status, &pktlen);
|
||
|
||
do_command (WIGGLER_ERASE_FLASH, &status, &pktlen);
|
||
|
||
wiggler_ops.to_xfer_memory = flash_xfer_memory;
|
||
|
||
generic_load (args, from_tty);
|
||
|
||
wiggler_ops.to_xfer_memory = wiggler_xfer_memory;
|
||
|
||
do_command (WIGGLER_EXIT_MON, &status, &pktlen);
|
||
|
||
/* discard_cleanups (old_chain);*/
|
||
}
|
||
|
||
/* Define the target subroutine names */
|
||
|
||
struct target_ops wiggler_ops = {
|
||
"wiggler", /* to_shortname */
|
||
"", /* to_longname */
|
||
"", /* to_doc */
|
||
wiggler_open, /* to_open */
|
||
wiggler_close, /* to_close */
|
||
NULL, /* to_attach */
|
||
wiggler_detach, /* to_detach */
|
||
wiggler_resume, /* to_resume */
|
||
wiggler_wait, /* to_wait */
|
||
wiggler_fetch_registers, /* to_fetch_registers */
|
||
wiggler_store_registers, /* to_store_registers */
|
||
wiggler_prepare_to_store, /* to_prepare_to_store */
|
||
wiggler_xfer_memory, /* to_xfer_memory */
|
||
wiggler_files_info, /* to_files_info */
|
||
wiggler_insert_breakpoint, /* to_insert_breakpoint */
|
||
memory_remove_breakpoint, /* to_remove_breakpoint */
|
||
NULL, /* to_terminal_init */
|
||
NULL, /* to_terminal_inferior */
|
||
NULL, /* to_terminal_ours_for_output */
|
||
NULL, /* to_terminal_ours */
|
||
NULL, /* to_terminal_info */
|
||
wiggler_kill, /* to_kill */
|
||
wiggler_load, /* to_load */
|
||
NULL, /* to_lookup_symbol */
|
||
wiggler_create_inferior, /* to_create_inferior */
|
||
wiggler_mourn, /* to_mourn_inferior */
|
||
0, /* to_can_run */
|
||
0, /* to_notice_signals */
|
||
wiggler_thread_alive, /* to_thread_alive */
|
||
0, /* to_stop */
|
||
process_stratum, /* to_stratum */
|
||
NULL, /* to_next */
|
||
1, /* to_has_all_memory */
|
||
1, /* to_has_memory */
|
||
1, /* to_has_stack */
|
||
1, /* to_has_registers */
|
||
1, /* to_has_execution */
|
||
NULL, /* sections */
|
||
NULL, /* sections_end */
|
||
OPS_MAGIC /* to_magic */
|
||
};
|
||
|
||
void
|
||
_initialize_remote_wiggler ()
|
||
{
|
||
extern struct cmd_list_element *cmdlist;
|
||
static struct cmd_list_element *bdm_cmd_list = NULL;
|
||
|
||
add_target (&wiggler_ops);
|
||
|
||
add_show_from_set (add_set_cmd ("remotetimeout", no_class,
|
||
var_integer, (char *)&remote_timeout,
|
||
"Set timeout value for remote read.\n", &setlist),
|
||
&showlist);
|
||
|
||
add_prefix_cmd ("bdm", class_obscure, bdm_command, "", &bdm_cmd_list, "bdm ",
|
||
0, &cmdlist);
|
||
|
||
add_cmd ("reset", class_obscure, bdm_reset_command, "", &bdm_cmd_list);
|
||
add_cmd ("restart", class_obscure, bdm_restart_command, "", &bdm_cmd_list);
|
||
add_cmd ("update-flash", class_obscure, bdm_update_flash_command, "", &bdm_cmd_list);
|
||
}
|