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156 lines
5.1 KiB
C
156 lines
5.1 KiB
C
/* Copyright (C) 2000 Free Software Foundation, Inc.
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*
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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, or (at your option)
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* any later version.
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*
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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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*
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* You should have received a copy of the GNU General Public License
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* along with this software; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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* Boston, MA 02111-1307 USA
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*
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* As a special exception, the Free Software Foundation gives permission
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* for additional uses of the text contained in its release of GUILE.
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*
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* The exception is that, if you link the GUILE library with other files
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* to produce an executable, this does not by itself cause the
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* resulting executable to be covered by the GNU General Public License.
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* Your use of that executable is in no way restricted on account of
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* linking the GUILE library code into it.
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*
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* This exception does not however invalidate any other reasons why
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* the executable file might be covered by the GNU General Public License.
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*
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* This exception applies only to the code released by the
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* Free Software Foundation under the name GUILE. If you copy
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* code from other Free Software Foundation releases into a copy of
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* GUILE, as the General Public License permits, the exception does
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* not apply to the code that you add in this way. To avoid misleading
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* anyone as to the status of such modified files, you must delete
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* this exception notice from them.
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*
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* If you write modifications of your own for GUILE, it is your choice
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* whether to permit this exception to apply to your modifications.
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* If you do not wish that, delete this exception notice. */
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#ifndef _VM_H_
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#define _VM_H_
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#include <libguile.h>
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#include "config.h"
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#include "programs.h"
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/*
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* VM Address
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*/
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#define SCM_VM_MAKE_STACK_ADDRESS(ptr) SCM_PACK (ptr)
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#define SCM_VM_STACK_ADDRESS(addr) ((SCM *) SCM_UNPACK (addr))
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#define SCM_VM_MAKE_BYTE_ADDRESS(ptr) SCM_PACK (ptr)
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#define SCM_VM_BYTE_ADDRESS(addr) ((scm_byte_t *) SCM_UNPACK (addr))
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/*
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* VM Stack frame
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*/
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/*
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| | <- fp + bp->nargs + bp->nlocs + 2
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+------------------+ = SCM_VM_FRAME_UPPER_ADDRESS (fp)
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| Dynamic link |
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| Return address | <- fp + bp->nargs + bp->nlocs
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| Local varialbe 1 | = SCM_VM_FRAME_DATA_ADDRESS (fp)
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| Local variable 0 | <- fp + bp->nargs
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| Argument 1 |
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| Argument 0 | <- fp
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| Program | <- fp - 1
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+------------------+ = SCM_VM_FRAME_LOWER_ADDRESS (fp)
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| |
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*/
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#define SCM_VM_FRAME_LOWER_ADDRESS(fp) (fp - 1)
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#define SCM_VM_FRAME_DATA_ADDRESS(fp) \
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(fp + SCM_PROGRAM_NARGS (SCM_VM_FRAME_PROGRAM (fp)) \
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+ SCM_PROGRAM_NLOCS (SCM_VM_FRAME_PROGRAM (fp)))
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#define SCM_VM_FRAME_UPPER_ADDRESS(fp) \
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(SCM_VM_FRAME_DATA_ADDRESS (fp) + 2)
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#define SCM_VM_FRAME_DYNAMIC_LINK(fp) SCM_VM_FRAME_DATA_ADDRESS (fp)[1]
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#define SCM_VM_FRAME_RETURN_ADDRESS(fp) SCM_VM_FRAME_DATA_ADDRESS (fp)[0]
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#define SCM_VM_FRAME_VARIABLE(fp,i) fp[i]
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#define SCM_VM_FRAME_PROGRAM(fp) fp[-1]
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/*
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* VM Heap frame
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*/
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struct scm_vm_heap_frame {
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SCM *fp;
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SCM program;
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SCM variables;
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SCM dynamic_link;
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};
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extern scm_bits_t scm_tc16_vm_heap_frame;
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#define SCM_VM_HEAP_FRAME_P(x) SCM_SMOB_PREDICATE (scm_tc16_vm_heap_frame, x)
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#define SCM_VM_HEAP_FRAME_DATA(f) ((struct scm_vm_heap_frame *) SCM_SMOB_DATA (f))
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#define SCM_VALIDATE_VM_HEAP_FRAME(p,x) SCM_MAKE_VALIDATE (p, x, VM_HEAP_FRAME_P)
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#define SCM_VM_HEAP_FRAME_PROGRAM(f) SCM_VM_HEAP_FRAME_DATA (f)->program
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#define SCM_VM_HEAP_FRAME_VARIABLES(f) SCM_VM_HEAP_FRAME_DATA (f)->variables
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#define SCM_VM_HEAP_FRAME_DYNAMIC_LINK(f) SCM_VM_HEAP_FRAME_DATA (f)->dynamic_link
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/*
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* VM
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*/
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#define SCM_VM_BOOT_HOOK 0
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#define SCM_VM_HALT_HOOK 1
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#define SCM_VM_NEXT_HOOK 2
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#define SCM_VM_ENTER_HOOK 3
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#define SCM_VM_APPLY_HOOK 4
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#define SCM_VM_EXIT_HOOK 5
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#define SCM_VM_RETURN_HOOK 6
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#define SCM_VM_NUM_HOOKS 7
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struct scm_vm {
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scm_byte_t *ip; /* instruction pointer */
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SCM *sp; /* stack pointer */
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SCM *fp; /* frame pointer */
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size_t stack_size; /* stack size */
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SCM *stack_base; /* stack base address */
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SCM *stack_limit; /* stack limit address */
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SCM hooks[SCM_VM_NUM_HOOKS]; /* hooks */
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SCM options; /* options */
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unsigned long time; /* time spent */
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unsigned long clock; /* bogos clock */
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};
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#define SCM_VM_P(x) SCM_SMOB_PREDICATE (scm_tc16_vm, x)
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#define SCM_VM_DATA(vm) ((struct scm_vm *) SCM_SMOB_DATA (vm))
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#define SCM_VALIDATE_VM(pos,x) SCM_MAKE_VALIDATE (pos, x, VM_P)
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extern SCM scm_the_vm ();
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extern SCM scm_make_vm (void);
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extern SCM scm_vm_apply (SCM vm, SCM program, SCM args);
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extern SCM scm_vm_option_ref (SCM vm, SCM key);
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extern SCM scm_vm_option_set_x (SCM vm, SCM key, SCM val);
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extern SCM scm_vm_current_frame (SCM vm);
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extern void scm_init_vm (void);
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#endif /* _VM_H_ */
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/*
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Local Variables:
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c-file-style: "gnu"
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End:
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*/
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