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/* 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, 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 software; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307 USA
*
* As a special exception, the Free Software Foundation gives permission
* for additional uses of the text contained in its release of GUILE.
*
* The exception is that, if you link the GUILE library with other files
* to produce an executable, this does not by itself cause the
* resulting executable to be covered by the GNU General Public License.
* Your use of that executable is in no way restricted on account of
* linking the GUILE library code into it.
*
* This exception does not however invalidate any other reasons why
* the executable file might be covered by the GNU General Public License.
*
* This exception applies only to the code released by the
* Free Software Foundation under the name GUILE. If you copy
* code from other Free Software Foundation releases into a copy of
* GUILE, as the General Public License permits, the exception does
* not apply to the code that you add in this way. To avoid misleading
* anyone as to the status of such modified files, you must delete
* this exception notice from them.
*
* If you write modifications of your own for GUILE, it is your choice
* whether to permit this exception to apply to your modifications.
* If you do not wish that, delete this exception notice. */
#ifndef _SCM_VM_H_
#define _SCM_VM_H_
#include <libguile.h>
#define SCM_VM_BOOT_HOOK 0
#define SCM_VM_HALT_HOOK 1
#define SCM_VM_NEXT_HOOK 2
#define SCM_VM_BREAK_HOOK 3
#define SCM_VM_ENTER_HOOK 4
#define SCM_VM_APPLY_HOOK 5
#define SCM_VM_EXIT_HOOK 6
#define SCM_VM_RETURN_HOOK 7
#define SCM_VM_NUM_HOOKS 8
struct scm_vm {
scm_byte_t *ip; /* instruction pointer */
SCM *sp; /* stack pointer */
SCM *fp; /* frame pointer */
size_t stack_size; /* stack size */
SCM *stack_base; /* stack base address */
SCM *stack_limit; /* stack limit address */
SCM this_frame; /* currrent frame */
SCM last_frame; /* last frame */
SCM hooks[SCM_VM_NUM_HOOKS]; /* hooks */
SCM options; /* options */
unsigned long time; /* time spent */
unsigned long clock; /* bogos clock */
};
#define SCM_VM_P(x) SCM_SMOB_PREDICATE (scm_tc16_vm, x)
#define SCM_VM_DATA(vm) ((struct scm_vm *) SCM_SMOB_DATA (vm))
#define SCM_VALIDATE_VM(pos,x) SCM_MAKE_VALIDATE (pos, x, VM_P)
extern SCM scm_the_vm ();
extern SCM scm_make_vm (void);
extern SCM scm_vm_apply (SCM vm, SCM program, SCM args);
extern SCM scm_vm_option_ref (SCM vm, SCM key);
extern SCM scm_vm_option_set_x (SCM vm, SCM key, SCM val);
extern void scm_init_vm (void);
#endif /* _SCM_VM_H_ */
/*
Local Variables:
c-file-style: "gnu"
End:
*/
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