551 lines
14 KiB
C
Executable file
551 lines
14 KiB
C
Executable file
/* ICE interface for the NEC V850 for GDB, the GNU debugger.
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Copyright 1996, Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include "defs.h"
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#include "gdb_string.h"
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#if 0
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#include "frame.h"
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#endif
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#include "inferior.h"
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#if 0
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#include "bfd.h"
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#endif
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#include "symfile.h"
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#include "target.h"
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#if 0
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#include "wait.h"
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#include "gdbcmd.h"
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#include "objfiles.h"
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#include "gdb-stabs.h"
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#include "gdbthread.h"
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#endif
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#define WIN32_LEAN_AND_MEAN
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#include <windows.h>
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/* Prototypes for local functions */
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static void v850ice_files_info PARAMS ((struct target_ops *ignore));
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static int v850ice_xfer_memory PARAMS ((CORE_ADDR memaddr, char *myaddr,
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int len, int should_write,
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struct target_ops *target));
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static void v850ice_prepare_to_store PARAMS ((void));
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static void v850ice_fetch_registers PARAMS ((int regno));
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static void v850ice_resume PARAMS ((int pid, int step,
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enum target_signal siggnal));
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static void v850ice_open PARAMS ((char *name, int from_tty));
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static void v850ice_close PARAMS ((int quitting));
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static void v850ice_store_registers PARAMS ((int regno));
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static void v850ice_mourn PARAMS ((void));
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static int v850ice_wait PARAMS ((int pid, struct target_waitstatus *status));
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static void v850ice_kill PARAMS ((void));
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static void v850ice_detach PARAMS ((char *args, int from_tty));
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static int v850ice_insert_breakpoint PARAMS ((CORE_ADDR, char *));
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static int v850ice_remove_breakpoint PARAMS ((CORE_ADDR, char *));
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static int ice_open = 0;
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#ifndef EXPORT
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#define EXPORT __declspec(dllexport)
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#endif
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struct MessageIO
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{
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int size; /* length of input or output in bytes */
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char *buf; /* buffer having the input/output information */
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};
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struct MessageIO null_iob = { 0, NULL };
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EXPORT long __stdcall ExeAppReq (char *, long, char *, struct MessageIO *);
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EXPORT long __stdcall RegisterClient (HWND);
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EXPORT long __stdcall UnregisterClient (void);
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EXPORT long __stdcall GdbCallBack (void);
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#define MREADREG 0x0001
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#define MWRITEREG 0x0002
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#define MREADMEM 0x0003
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#define MWRITEMEM 0x0004
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#define MSINGLESTEP 0x0005
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#define MRESUME 0x0006
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#define MLOADPROGRAM 0x0007
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#define MSETBREAK 0x0008
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#define MREMOVEBREAK 0x0009
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#define MQUIT 0x000A
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#define MTERMINATE 0x000B
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#define MATTACH 0x000C
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#define MCHECKSTATUS 0x000D
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#define MHALT 0x000E
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#define MDIRECTCMD 0x000F
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#define MSYMADR 0x0010
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#define MGETTASKLIST 0x0011
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#define MREADVECREG 0x0012
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#define MWRITEVECREG 0x0013
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#define MGETCHANGEDREGS 0x0014
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#define MGETSERVERINFO 0x0015
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#define MREADBLOCK 0x0016
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#define MSETHARDBRK 0x0017
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#define MREMOVEHARDBRK 0x0018
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#define MCOPYBLOCK 0x0019
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#define MBLOCKFILL 0x001A
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#define MFINDBLOCK 0x001B
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#define MCOMPAREBLOCK 0x001C
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#define MREFRESH 0x001D
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#define MSPECIAL 0x001E
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#define MGETCMDLIST 0x001F
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#define MEXPVAL 0x0020
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#define MEXPFAILED 0x0021
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#define MSAVESTATE 0x0022
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#define MWRITEBLOCK 0x0023
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#define MDETACH 0x0024
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#define MGETMODULES 0x0025
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#define MREMOTESYMBOL 0x0026
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#define MREADCSTRING 0x0027
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#define MLOADMODULE 0x0028
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#define MDIDSYSCALL 0x0029
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#define MDBPWRITEBUFFERS 0x002A
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#define MBPID 0x002B
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#define MINITEXEC 0x002C
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#define MEXITEXEC 0x002D
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#define MRCCMD 0x002E
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#define MDOWNLOAD 0x0050
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#define StatRunning 0
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#define StatExecBreak 1 /* an execution breakpoint has been reached */
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#define StatStepped 2 /* a single step has been completed */
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#define StatException 3 /* the target has stopped due to an exception */
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#define StatHalted 4 /* target has been halted by a user request */
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#define StatExited 5 /* target called exit */
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#define StatTerminated 6 /* target program terminated by a user request */
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#define StatNoProcess 7 /* no process on target and none of the above */
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#define StatNeedInput 8 /* REV: obsolete */
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#define StatNeedDirCmd 9 /* waiting for an entry in the remote window */
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#define StatHardBreak 10 /* hit hardware breakpoint */
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#define StatFailure 11 /* an error occured in the last run/single */
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extern struct target_ops v850ice_ops; /* Forward decl */
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/* "pir", "tkcw", "chcw", "adtre" */
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/* Code for opening a connection to the ICE. */
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static void
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v850ice_open (name, from_tty)
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char *name;
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int from_tty;
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{
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long retval;
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if (name)
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error ("Too many arguments.");
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target_preopen (from_tty);
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unpush_target (&v850ice_ops);
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if (from_tty)
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puts_filtered ("V850ice debugging\n");
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push_target (&v850ice_ops); /* Switch to using v850ice target now */
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target_terminal_init ();
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/* Without this, some commands which require an active target (such as kill)
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won't work. This variable serves (at least) double duty as both the pid
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of the target process (if it has such), and as a flag indicating that a
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target is active. These functions should be split out into seperate
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variables, especially since GDB will someday have a notion of debugging
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several processes. */
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inferior_pid = 42000;
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/* Start the v850ice connection; if error (0), discard this target.
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In particular, if the user quits, be sure to discard it
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(we'd be in an inconsistent state otherwise). */
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WinExec ("necsrv", SW_SHOW); /* Start up necsrv */
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retval = RegisterClient (NULL);
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if (retval == 0)
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{
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ice_open = 1;
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start_remote ();
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return;
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}
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pop_target();
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error ("v850ice_open: MINITEXEC return error: 0x%x", retval);
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}
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/* Clean up connection to a remote debugger. */
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/* ARGSUSED */
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static void
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v850ice_close (quitting)
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int quitting;
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{
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long retval;
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if (ice_open)
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{
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#if 0
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retval = ExeAppReq ("GDB", MEXITEXEC, NULL, &null_iob);
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if (retval)
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error ("ExeAppReq (MEXITEXEC) returned %d", retval);
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#endif
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ice_open = 0;
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UnregisterClient ();
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}
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}
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static void
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v850ice_detach (args, from_tty)
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char *args;
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int from_tty;
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{
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if (args)
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error ("Argument given to \"detach\" when remotely debugging.");
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pop_target ();
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if (from_tty)
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puts_filtered ("Ending v850ice debugging.\n");
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}
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/* Tell the remote machine to resume. */
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static void
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v850ice_resume (pid, step, siggnal)
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int pid, step;
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enum target_signal siggnal;
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{
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long retval;
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if (step)
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retval = ExeAppReq ("GDB", MSINGLESTEP, "step", &null_iob);
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else
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retval = ExeAppReq ("GDB", MRESUME, "run", &null_iob);
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if (retval)
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error ("ExeAppReq (step = %d) returned %d", step, retval);
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}
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/* Wait until the remote machine stops, then return,
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storing status in STATUS just as `wait' would.
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Returns "pid" (though it's not clear what, if anything, that
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means in the case of this target). */
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static int
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v850ice_wait (pid, status)
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int pid;
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struct target_waitstatus *status;
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{
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long v850_status;
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v850_status = ExeAppReq ("GDB", MCHECKSTATUS, NULL, &null_iob);
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status->kind = TARGET_WAITKIND_STOPPED;
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status->value.sig = TARGET_SIGNAL_TRAP;
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return inferior_pid;
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}
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static int
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convert_register (regno, buf)
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int regno;
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char *buf;
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{
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if (regno <= 31)
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sprintf (buf, "r%d", regno);
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else if (reg_names[regno][0] == 's'
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&& reg_names[regno][1] == 'r')
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return 0;
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else
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sprintf (buf, "%s", reg_names[regno]);
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return 1;
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}
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/* Read the remote registers into the block REGS. */
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/* Note that the ICE returns register contents as ascii hex strings. We have
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to convert that to an unsigned long, and then call store_unsigned_integer to
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convert it to target byte-order if necessary. */
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static void
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v850ice_fetch_registers (regno)
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int regno;
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{
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long retval;
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char cmd[100];
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char val[100];
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struct MessageIO iob;
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unsigned long regval;
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char *p;
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if (regno == -1)
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{
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for (regno = 0; regno < NUM_REGS; regno++)
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v850ice_fetch_registers (regno);
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return;
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}
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strcpy (cmd, "reg ");
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if (!convert_register (regno, &cmd[4]))
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return;
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iob.size = sizeof val;
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iob.buf = val;
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retval = ExeAppReq ("GDB", MREADREG, cmd, &iob);
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if (retval)
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error ("ExeAppReq returned %d: cmd = %s", retval, cmd);
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regval = strtoul (val, &p, 16);
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if (regval == 0 && p == val)
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error ("v850ice_fetch_registers (%d): bad value from ICE: %s.",
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regno, val);
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store_unsigned_integer (val, REGISTER_RAW_SIZE (regno), regval);
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supply_register (regno, val);
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}
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/* Store register REGNO, or all registers if REGNO == -1, from the contents
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of REGISTERS. */
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static void
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v850ice_store_registers (regno)
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int regno;
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{
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long retval;
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char cmd[100];
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unsigned long regval;
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if (regno == -1)
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{
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for (regno = 0; regno < NUM_REGS; regno++)
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v850ice_store_registers (regno);
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return;
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}
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regval = extract_unsigned_integer (®isters[REGISTER_BYTE (regno)],
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REGISTER_RAW_SIZE (regno));
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strcpy (cmd, "reg ");
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if (!convert_register (regno, &cmd[4]))
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return;
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sprintf (cmd + strlen (cmd), "=0x%x", regval);
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retval = ExeAppReq ("GDB", MWRITEREG, cmd, &null_iob);
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if (retval)
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error ("ExeAppReq returned %d: cmd = %s", retval, cmd);
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}
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/* Prepare to store registers. Nothing to do here, since the ICE can write one
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register at a time. */
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static void
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v850ice_prepare_to_store ()
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{
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}
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/* Read or write LEN bytes from inferior memory at MEMADDR, transferring
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to or from debugger address MYADDR. Write to inferior if SHOULD_WRITE is
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nonzero. Returns length of data written or read; 0 for error. */
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/* ARGSUSED */
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static int
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v850ice_xfer_memory (memaddr, myaddr, len, should_write, target)
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CORE_ADDR memaddr;
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char *myaddr;
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int len;
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int should_write;
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struct target_ops *target; /* ignored */
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{
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long retval;
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char cmd[100];
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struct MessageIO iob;
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iob.size = len;
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iob.buf = myaddr;
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if (should_write)
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{
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#if 1
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sprintf (cmd, "memory b c 0x%x=0x00 l=%d", (int)memaddr, len);
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retval = ExeAppReq ("GDB", MWRITEBLOCK, cmd, &iob);
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#else
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sprintf (cmd, "memory b c 0x%x=0x%x", (int)memaddr, *myaddr & 0xff);
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retval = ExeAppReq ("GDB", MWRITEBLOCK, cmd, &iob);
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return 1;
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#endif
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}
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else
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{
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unsigned char *tmp;
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int i;
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tmp = alloca (len + 100);
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memset (tmp + len, 0xff, 100);
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#if 1
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sprintf (cmd, "memory b 0x%x l=%d", (int)memaddr, len);
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retval = ExeAppReq ("GDB", MREADBLOCK, cmd, &iob);
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#else
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sprintf (cmd, "memory h 0x%x", (int)memaddr);
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retval = ExeAppReq ("GDB", MREADMEM, cmd, &iob);
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#endif
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for (i = 0; i < 100; i++)
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{
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if (tmp[len + i] != 0xff)
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{
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warning ("MREADBLOCK trashed bytes after transfer area.");
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break;
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}
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}
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memcpy (myaddr, tmp, len);
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}
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if (retval)
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error ("ExeAppReq returned %d: cmd = %s", retval, cmd);
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return len;
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}
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static void
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v850ice_files_info (ignore)
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struct target_ops *ignore;
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{
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puts_filtered ("Debugging a target via the NEC V850 ICE.\n");
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}
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static int
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v850ice_insert_breakpoint (addr, contents_cache)
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CORE_ADDR addr;
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char *contents_cache;
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{
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long retval;
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char cmd[100];
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sprintf (cmd, "%d, ", addr);
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#if 1
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retval = ExeAppReq ("GDB", MSETBREAK, cmd, &null_iob);
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#else
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retval = ExeAppReq ("GDB", MSETHARDBRK, cmd, &null_iob);
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#endif
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if (retval)
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error ("ExeAppReq (MSETBREAK) returned %d: cmd = %s", retval, cmd);
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return 0;
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}
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static int
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v850ice_remove_breakpoint (addr, contents_cache)
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CORE_ADDR addr;
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char *contents_cache;
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{
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long retval;
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char cmd[100];
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sprintf (cmd, "%d, ", addr);
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#if 1
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retval = ExeAppReq ("GDB", MREMOVEBREAK, cmd, &null_iob);
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#else
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retval = ExeAppReq ("GDB", MREMOVEHARDBRK, cmd, &null_iob);
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#endif
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if (retval)
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error ("ExeAppReq (MREMOVEBREAK) returned %d: cmd = %s", retval, cmd);
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return 0;
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}
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static void
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v850ice_kill ()
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{
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target_mourn_inferior ();
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}
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static void
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v850ice_mourn ()
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{
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}
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/* Define the target subroutine names */
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struct target_ops v850ice_ops = {
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"ice", /* to_shortname */
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"NEC V850 ICE interface", /* to_longname */
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"Debug a system controlled by a NEC 850 ICE.", /* to_doc */
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v850ice_open, /* to_open */
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v850ice_close, /* to_close */
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NULL, /* to_attach */
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v850ice_detach, /* to_detach */
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v850ice_resume, /* to_resume */
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v850ice_wait, /* to_wait */
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v850ice_fetch_registers, /* to_fetch_registers */
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v850ice_store_registers, /* to_store_registers */
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v850ice_prepare_to_store, /* to_prepare_to_store */
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v850ice_xfer_memory, /* to_xfer_memory */
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v850ice_files_info, /* to_files_info */
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v850ice_insert_breakpoint, /* to_insert_breakpoint */
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v850ice_remove_breakpoint, /* to_remove_breakpoint */
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NULL, /* to_terminal_init */
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NULL, /* to_terminal_inferior */
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NULL, /* to_terminal_ours_for_output */
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NULL, /* to_terminal_ours */
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NULL, /* to_terminal_info */
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v850ice_kill, /* to_kill */
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generic_load, /* to_load */
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NULL, /* to_lookup_symbol */
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NULL, /* to_create_inferior */
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v850ice_mourn, /* to_mourn_inferior */
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0, /* to_can_run */
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0, /* to_notice_signals */
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NULL, /* to_thread_alive */
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0, /* to_stop */
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process_stratum, /* to_stratum */
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NULL, /* to_next */
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1, /* to_has_all_memory */
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1, /* to_has_memory */
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1, /* to_has_stack */
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1, /* to_has_registers */
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1, /* to_has_execution */
|
|
NULL, /* sections */
|
|
NULL, /* sections_end */
|
|
OPS_MAGIC /* to_magic */
|
|
};
|
|
|
|
void
|
|
_initialize_v850ice ()
|
|
{
|
|
add_target (&v850ice_ops);
|
|
}
|