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binutils-gdb/gdb/v850ice.c
1997-07-25 22:41:56 +00:00

552 lines
14 KiB
C
Executable File

/* ICE interface for the NEC V850 for GDB, the GNU debugger.
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 "gdb_string.h"
#if 0
#include "frame.h"
#endif
#include "inferior.h"
#if 0
#include "bfd.h"
#endif
#include "symfile.h"
#include "target.h"
#if 0
#include "wait.h"
#include "gdbcmd.h"
#include "objfiles.h"
#include "gdb-stabs.h"
#include "gdbthread.h"
#endif
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
/* Prototypes for local functions */
static void v850ice_files_info PARAMS ((struct target_ops *ignore));
static int v850ice_xfer_memory PARAMS ((CORE_ADDR memaddr, char *myaddr,
int len, int should_write,
struct target_ops *target));
static void v850ice_prepare_to_store PARAMS ((void));
static void v850ice_fetch_registers PARAMS ((int regno));
static void v850ice_resume PARAMS ((int pid, int step,
enum target_signal siggnal));
static void v850ice_open PARAMS ((char *name, int from_tty));
static void v850ice_close PARAMS ((int quitting));
static void v850ice_store_registers PARAMS ((int regno));
static void v850ice_mourn PARAMS ((void));
static int v850ice_wait PARAMS ((int pid, struct target_waitstatus *status));
static void v850ice_kill PARAMS ((void));
static void v850ice_detach PARAMS ((char *args, int from_tty));
static int v850ice_insert_breakpoint PARAMS ((CORE_ADDR, char *));
static int v850ice_remove_breakpoint PARAMS ((CORE_ADDR, char *));
static int ice_open = 0;
#ifndef EXPORT
#define EXPORT __declspec(dllexport)
#endif
struct MessageIO
{
int size; /* length of input or output in bytes */
char *buf; /* buffer having the input/output information */
};
struct MessageIO null_iob = { 0, NULL };
EXPORT long __stdcall ExeAppReq (char *, long, char *, struct MessageIO *);
EXPORT long __stdcall RegisterClient (HWND);
EXPORT long __stdcall UnregisterClient (void);
EXPORT long __stdcall GdbCallBack (void);
#define MREADREG 0x0001
#define MWRITEREG 0x0002
#define MREADMEM 0x0003
#define MWRITEMEM 0x0004
#define MSINGLESTEP 0x0005
#define MRESUME 0x0006
#define MLOADPROGRAM 0x0007
#define MSETBREAK 0x0008
#define MREMOVEBREAK 0x0009
#define MQUIT 0x000A
#define MTERMINATE 0x000B
#define MATTACH 0x000C
#define MCHECKSTATUS 0x000D
#define MHALT 0x000E
#define MDIRECTCMD 0x000F
#define MSYMADR 0x0010
#define MGETTASKLIST 0x0011
#define MREADVECREG 0x0012
#define MWRITEVECREG 0x0013
#define MGETCHANGEDREGS 0x0014
#define MGETSERVERINFO 0x0015
#define MREADBLOCK 0x0016
#define MSETHARDBRK 0x0017
#define MREMOVEHARDBRK 0x0018
#define MCOPYBLOCK 0x0019
#define MBLOCKFILL 0x001A
#define MFINDBLOCK 0x001B
#define MCOMPAREBLOCK 0x001C
#define MREFRESH 0x001D
#define MSPECIAL 0x001E
#define MGETCMDLIST 0x001F
#define MEXPVAL 0x0020
#define MEXPFAILED 0x0021
#define MSAVESTATE 0x0022
#define MWRITEBLOCK 0x0023
#define MDETACH 0x0024
#define MGETMODULES 0x0025
#define MREMOTESYMBOL 0x0026
#define MREADCSTRING 0x0027
#define MLOADMODULE 0x0028
#define MDIDSYSCALL 0x0029
#define MDBPWRITEBUFFERS 0x002A
#define MBPID 0x002B
#define MINITEXEC 0x002C
#define MEXITEXEC 0x002D
#define MRCCMD 0x002E
#define MDOWNLOAD 0x0050
#define StatRunning 0
#define StatExecBreak 1 /* an execution breakpoint has been reached */
#define StatStepped 2 /* a single step has been completed */
#define StatException 3 /* the target has stopped due to an exception */
#define StatHalted 4 /* target has been halted by a user request */
#define StatExited 5 /* target called exit */
#define StatTerminated 6 /* target program terminated by a user request */
#define StatNoProcess 7 /* no process on target and none of the above */
#define StatNeedInput 8 /* REV: obsolete */
#define StatNeedDirCmd 9 /* waiting for an entry in the remote window */
#define StatHardBreak 10 /* hit hardware breakpoint */
#define StatFailure 11 /* an error occured in the last run/single */
extern struct target_ops v850ice_ops; /* Forward decl */
/* "pir", "tkcw", "chcw", "adtre" */
/* Code for opening a connection to the ICE. */
static void
v850ice_open (name, from_tty)
char *name;
int from_tty;
{
long retval;
if (name)
error ("Too many arguments.");
target_preopen (from_tty);
unpush_target (&v850ice_ops);
if (from_tty)
puts_filtered ("V850ice debugging\n");
push_target (&v850ice_ops); /* Switch to using v850ice target now */
target_terminal_init ();
/* 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 v850ice 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). */
WinExec ("necsrv", SW_SHOW); /* Start up necsrv */
retval = RegisterClient (NULL);
if (retval == 0)
{
ice_open = 1;
start_remote ();
return;
}
pop_target();
error ("v850ice_open: MINITEXEC return error: 0x%x", retval);
}
/* Clean up connection to a remote debugger. */
/* ARGSUSED */
static void
v850ice_close (quitting)
int quitting;
{
long retval;
if (ice_open)
{
#if 0
retval = ExeAppReq ("GDB", MEXITEXEC, NULL, &null_iob);
if (retval)
error ("ExeAppReq (MEXITEXEC) returned %d", retval);
#endif
ice_open = 0;
UnregisterClient ();
}
}
static void
v850ice_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 v850ice debugging.\n");
}
/* Tell the remote machine to resume. */
static void
v850ice_resume (pid, step, siggnal)
int pid, step;
enum target_signal siggnal;
{
long retval;
if (step)
retval = ExeAppReq ("GDB", MSINGLESTEP, "step", &null_iob);
else
retval = ExeAppReq ("GDB", MRESUME, "run", &null_iob);
if (retval)
error ("ExeAppReq (step = %d) returned %d", step, retval);
}
/* 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
v850ice_wait (pid, status)
int pid;
struct target_waitstatus *status;
{
long v850_status;
v850_status = ExeAppReq ("GDB", MCHECKSTATUS, NULL, &null_iob);
status->kind = TARGET_WAITKIND_STOPPED;
status->value.sig = TARGET_SIGNAL_TRAP;
return inferior_pid;
}
static int
convert_register (regno, buf)
int regno;
char *buf;
{
if (regno <= 31)
sprintf (buf, "r%d", regno);
else if (reg_names[regno][0] == 's'
&& reg_names[regno][1] == 'r')
return 0;
else
sprintf (buf, "%s", reg_names[regno]);
return 1;
}
/* Read the remote registers into the block REGS. */
/* Note that the ICE returns register contents as ascii hex strings. We have
to convert that to an unsigned long, and then call store_unsigned_integer to
convert it to target byte-order if necessary. */
static void
v850ice_fetch_registers (regno)
int regno;
{
long retval;
char cmd[100];
char val[100];
struct MessageIO iob;
unsigned long regval;
char *p;
if (regno == -1)
{
for (regno = 0; regno < NUM_REGS; regno++)
v850ice_fetch_registers (regno);
return;
}
strcpy (cmd, "reg ");
if (!convert_register (regno, &cmd[4]))
return;
iob.size = sizeof val;
iob.buf = val;
retval = ExeAppReq ("GDB", MREADREG, cmd, &iob);
if (retval)
error ("ExeAppReq returned %d: cmd = %s", retval, cmd);
regval = strtoul (val, &p, 16);
if (regval == 0 && p == val)
error ("v850ice_fetch_registers (%d): bad value from ICE: %s.",
regno, val);
store_unsigned_integer (val, REGISTER_RAW_SIZE (regno), regval);
supply_register (regno, val);
}
/* Store register REGNO, or all registers if REGNO == -1, from the contents
of REGISTERS. */
static void
v850ice_store_registers (regno)
int regno;
{
long retval;
char cmd[100];
unsigned long regval;
if (regno == -1)
{
for (regno = 0; regno < NUM_REGS; regno++)
v850ice_store_registers (regno);
return;
}
regval = extract_unsigned_integer (&registers[REGISTER_BYTE (regno)],
REGISTER_RAW_SIZE (regno));
strcpy (cmd, "reg ");
if (!convert_register (regno, &cmd[4]))
return;
sprintf (cmd + strlen (cmd), "=0x%x", regval);
retval = ExeAppReq ("GDB", MWRITEREG, cmd, &null_iob);
if (retval)
error ("ExeAppReq returned %d: cmd = %s", retval, cmd);
}
/* Prepare to store registers. Nothing to do here, since the ICE can write one
register at a time. */
static void
v850ice_prepare_to_store ()
{
}
/* 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
v850ice_xfer_memory (memaddr, myaddr, len, should_write, target)
CORE_ADDR memaddr;
char *myaddr;
int len;
int should_write;
struct target_ops *target; /* ignored */
{
long retval;
char cmd[100];
struct MessageIO iob;
iob.size = len;
iob.buf = myaddr;
if (should_write)
{
#if 1
sprintf (cmd, "memory b c 0x%x=0x00 l=%d", (int)memaddr, len);
retval = ExeAppReq ("GDB", MWRITEBLOCK, cmd, &iob);
#else
sprintf (cmd, "memory b c 0x%x=0x%x", (int)memaddr, *myaddr & 0xff);
retval = ExeAppReq ("GDB", MWRITEBLOCK, cmd, &iob);
return 1;
#endif
}
else
{
unsigned char *tmp;
int i;
tmp = alloca (len + 100);
memset (tmp + len, 0xff, 100);
#if 1
sprintf (cmd, "memory b 0x%x l=%d", (int)memaddr, len);
retval = ExeAppReq ("GDB", MREADBLOCK, cmd, &iob);
#else
sprintf (cmd, "memory h 0x%x", (int)memaddr);
retval = ExeAppReq ("GDB", MREADMEM, cmd, &iob);
#endif
for (i = 0; i < 100; i++)
{
if (tmp[len + i] != 0xff)
{
warning ("MREADBLOCK trashed bytes after transfer area.");
break;
}
}
memcpy (myaddr, tmp, len);
}
if (retval)
error ("ExeAppReq returned %d: cmd = %s", retval, cmd);
return len;
}
static void
v850ice_files_info (ignore)
struct target_ops *ignore;
{
puts_filtered ("Debugging a target via the NEC V850 ICE.\n");
}
static int
v850ice_insert_breakpoint (addr, contents_cache)
CORE_ADDR addr;
char *contents_cache;
{
long retval;
char cmd[100];
sprintf (cmd, "%d, ", addr);
#if 1
retval = ExeAppReq ("GDB", MSETBREAK, cmd, &null_iob);
#else
retval = ExeAppReq ("GDB", MSETHARDBRK, cmd, &null_iob);
#endif
if (retval)
error ("ExeAppReq (MSETBREAK) returned %d: cmd = %s", retval, cmd);
return 0;
}
static int
v850ice_remove_breakpoint (addr, contents_cache)
CORE_ADDR addr;
char *contents_cache;
{
long retval;
char cmd[100];
sprintf (cmd, "%d, ", addr);
#if 1
retval = ExeAppReq ("GDB", MREMOVEBREAK, cmd, &null_iob);
#else
retval = ExeAppReq ("GDB", MREMOVEHARDBRK, cmd, &null_iob);
#endif
if (retval)
error ("ExeAppReq (MREMOVEBREAK) returned %d: cmd = %s", retval, cmd);
return 0;
}
static void
v850ice_kill ()
{
target_mourn_inferior ();
}
static void
v850ice_mourn ()
{
}
/* Define the target subroutine names */
struct target_ops v850ice_ops = {
"ice", /* to_shortname */
"NEC V850 ICE interface", /* to_longname */
"Debug a system controlled by a NEC 850 ICE.", /* to_doc */
v850ice_open, /* to_open */
v850ice_close, /* to_close */
NULL, /* to_attach */
v850ice_detach, /* to_detach */
v850ice_resume, /* to_resume */
v850ice_wait, /* to_wait */
v850ice_fetch_registers, /* to_fetch_registers */
v850ice_store_registers, /* to_store_registers */
v850ice_prepare_to_store, /* to_prepare_to_store */
v850ice_xfer_memory, /* to_xfer_memory */
v850ice_files_info, /* to_files_info */
v850ice_insert_breakpoint, /* to_insert_breakpoint */
v850ice_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 */
v850ice_kill, /* to_kill */
generic_load, /* to_load */
NULL, /* to_lookup_symbol */
NULL, /* to_create_inferior */
v850ice_mourn, /* to_mourn_inferior */
0, /* to_can_run */
0, /* to_notice_signals */
NULL, /* 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_v850ice ()
{
add_target (&v850ice_ops);
}