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/* -*-c-*- ---------------- mix_vm_command.h :
* declarations for mix_vm_command_t, describing commands issued to a vm
* ------------------------------------------------------------------
* Last change: Time-stamp: <01/03/15 15:57:36 jose>
* ------------------------------------------------------------------
* Copyright (C) 2001 Free Software Foundation, Inc.
*
* 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.
*
*/
#ifndef MIX_VM_COMMAND_H
#define MIX_VM_COMMAND_H
#include <stdio.h>
#include "mix.h"
#include "mix_vm.h"
/* mix_vm_cmd_dispatcher encapsulates a virtual machine and helper
objects, providing a command driven interface with output to
provided files (in the posix sense).
*/
typedef struct mix_vm_cmd_dispatcher_t mix_vm_cmd_dispatcher_t;
/* mix_vm_cmd_dispatcher understands the commands of this type */
typedef enum {
MIX_CMD_HELP = 0, /* echo help message */
MIX_CMD_LOAD, /* load a mix program */
MIX_CMD_RUN, /* run a loaded program */
MIX_CMD_NEXT, /* run next instruction */
MIX_CMD_LOC, /* print location pointer */
MIX_CMD_PSYM, /* print symbol */
MIX_CMD_PREG, /* print registry */
MIX_CMD_PFLAGS, /* print comp and overf flags */
MIX_CMD_PALL, /* print all registers and flags */
MIX_CMD_PMEM, /* print memory cells */
MIX_CMD_SREG, /* set register value */
MIX_CMD_SCMP, /* set comparison flag value */
MIX_CMD_SOVER, /* set overflow toggle value */
MIX_CMD_SMEM, /* set memory cell value */
MIX_CMD_SSYM, /* set symbol value */
MIX_CMD_SBP, /* set breakpoint at lineno */
MIX_CMD_CBP, /* clear breakpoint at lineno */
MIX_CMD_SBPA, /* set breakpoint at address */
MIX_CMD_CBPA, /* clear breakpoint at address */
MIX_CMD_CABP, /* clear all breakpoints */
MIX_CMD_WEVAL, /* evaluate a w-expression */
MIX_CMD_W2D, /* print word in decimal notation */
MIX_CMD_TRON, /* enable instruction traces */
MIX_CMD_TROFF, /* disble instruction traces */
MIX_CMD_INVALID, /* invalid command identifier */
} mix_vm_command_t;
/* hook functions, to be invoked before and/or after command execution */
typedef void (*mix_vm_cmd_hook_t)(mix_vm_cmd_dispatcher_t *dis,
const gchar *arg, gpointer data);
/* global hook functions */
typedef void (*mix_vm_cmd_global_hook_t)(mix_vm_cmd_dispatcher_t *dis,
mix_vm_command_t cmd,
const gchar *arg, gpointer data);
/* conversion from/to commands to strings */
extern const gchar *
mix_vm_command_to_string (mix_vm_command_t cmd);
extern mix_vm_command_t
mix_vm_command_from_string (const gchar *name);
/* get help string about a command */
extern const gchar *
mix_vm_command_help (mix_vm_command_t cmd);
extern const gchar *
mix_vm_command_usage (mix_vm_command_t cmd);
/* create a new command dispatcher */
extern mix_vm_cmd_dispatcher_t *
mix_vm_cmd_dispatcher_new (FILE *out_fd, /* output messages file */
FILE *err_fd /* error messages file */);
/* delete (does not close the fds in the constructor) */
extern void
mix_vm_cmd_dispatcher_delete (mix_vm_cmd_dispatcher_t *dis);
/* dispatch a command */
extern gboolean /* TRUE if success, FALSE otherwise */
mix_vm_cmd_dispatcher_dispatch (mix_vm_cmd_dispatcher_t *dis,
mix_vm_command_t cmd, const gchar *arg);
/* dispatch a command in text format */
extern gboolean
mix_vm_cmd_dispatcher_dispatch_text (mix_vm_cmd_dispatcher_t *dis,
const gchar *text);
/* get the last dispatch's result */
extern gboolean
mix_vm_cmd_dispatcher_get_last_result (const mix_vm_cmd_dispatcher_t *dis);
/* get total uptime */
extern mix_time_t
mix_vm_cmd_dispatcher_get_uptime (const mix_vm_cmd_dispatcher_t *dis);
/* get program total time */
extern mix_time_t
mix_vm_cmd_dispatcher_get_progtime (const mix_vm_cmd_dispatcher_t *dis);
/* get time lapse */
extern mix_time_t
mix_vm_cmd_dispatcher_get_laptime (const mix_vm_cmd_dispatcher_t *dis);
/* toggle time printing */
extern void
mix_vm_cmd_dispatcher_print_time (mix_vm_cmd_dispatcher_t * dis,
gboolean print);
/* install hooks */
extern void
mix_vm_cmd_dispatcher_pre_hook (mix_vm_cmd_dispatcher_t *dis,
mix_vm_command_t cmd,
mix_vm_cmd_hook_t hook, gpointer data);
extern void
mix_vm_cmd_dispatcher_post_hook (mix_vm_cmd_dispatcher_t *dis,
mix_vm_command_t cmd,
mix_vm_cmd_hook_t hook, gpointer data);
extern void
mix_vm_cmd_dispatcher_global_pre_hook (mix_vm_cmd_dispatcher_t *dis,
mix_vm_cmd_global_hook_t hook,
gpointer data);
extern void
mix_vm_cmd_dispatcher_global_post_hook (mix_vm_cmd_dispatcher_t *dis,
mix_vm_cmd_global_hook_t hook,
gpointer data);
/* get the mix vm */
extern const mix_vm_t *
mix_vm_cmd_dispatcher_get_vm (const mix_vm_cmd_dispatcher_t *dis);
#endif /* MIX_VM_COMMAND_H */
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