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bfffd2583c
* libguile/continuations.c (scm_make_continuation): Capture VM continuations as well, as their stack is outside the C stack. (copy_stack): Reinstate VM stacks with the C stack. * libguile/continuations.h (scm_t_contregs): Add a pointer for VM stacks. A binary-incompatible change -- hopefully not too many people were messing around with this struct, though. * libguile/vm-engine.c (vm_run): Add a note about possibly maintaining a stack of vms. * libguile/vm.c (struct scm_vm_cont): New struct, distinct from scm_vm. (vm_cont_mark, vm_cont_free, capture_vm_cont, reinstate_vm_cont): Reorder some code, and fix some bad assumptions about what part of the stack to copy; obviously this code was never used. * libguile/vm.h: * libguile/vm.c (scm_vm_capture_continuations) (scm_vm_reinstate_continuations): New public functions, used by continuations.c.
123 lines
4.4 KiB
C
123 lines
4.4 KiB
C
/* Copyright (C) 2001 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 _SCM_VM_H_
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#define _SCM_VM_H_
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#include <libguile.h>
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#include <libguile/programs.h>
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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_BREAK_HOOK 3
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#define SCM_VM_ENTER_HOOK 4
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#define SCM_VM_APPLY_HOOK 5
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#define SCM_VM_EXIT_HOOK 6
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#define SCM_VM_RETURN_HOOK 7
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#define SCM_VM_NUM_HOOKS 8
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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 this_frame; /* currrent frame */
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SCM last_frame; /* last frame */
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scm_byte_t *last_ip; /* ip when exception occured */
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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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extern SCM scm_the_vm_fluid;
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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_version (void);
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extern SCM scm_the_vm (void);
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extern SCM scm_vm_p (SCM obj);
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extern SCM scm_vm_ip (SCM vm);
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extern SCM scm_vm_sp (SCM vm);
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extern SCM scm_vm_fp (SCM vm);
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extern SCM scm_vm_boot_hook (SCM vm);
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extern SCM scm_vm_halt_hook (SCM vm);
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extern SCM scm_vm_next_hook (SCM vm);
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extern SCM scm_vm_break_hook (SCM vm);
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extern SCM scm_vm_enter_hook (SCM vm);
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extern SCM scm_vm_apply_hook (SCM vm);
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extern SCM scm_vm_exit_hook (SCM vm);
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extern SCM scm_vm_return_hook (SCM vm);
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extern SCM scm_vm_option (SCM vm, SCM key);
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extern SCM scm_set_vm_option_x (SCM vm, SCM key, SCM val);
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extern SCM scm_vm_stats (SCM vm);
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extern SCM scm_vm_this_frame (SCM vm);
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extern SCM scm_vm_last_frame (SCM vm);
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extern SCM scm_vm_last_ip (SCM vm);
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extern SCM scm_vm_save_stack (SCM vm);
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extern SCM scm_vm_fetch_code (SCM vm);
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extern SCM scm_vm_fetch_stack (SCM vm);
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extern SCM scm_vm_capture_continuations (void);
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extern void scm_vm_reinstate_continuations (SCM conts);
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extern SCM scm_load_compiled_with_vm (SCM file);
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extern void scm_init_vm (void);
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#endif /* _SCM_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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