-/* Copyright (C) 2001, 2009 Free Software Foundation, Inc.
+/* Copyright (C) 2001, 2009, 2010, 2011, 2012, 2013, 2014 Free Software Foundation, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
#include <libguile.h>
#include <libguile/programs.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;
-
-typedef SCM (*scm_t_vm_engine) (struct scm_vm *vp, SCM program, SCM *argv, int nargs);
+enum {
+ SCM_VM_APPLY_HOOK,
+ SCM_VM_PUSH_CONTINUATION_HOOK,
+ SCM_VM_POP_CONTINUATION_HOOK,
+ SCM_VM_NEXT_HOOK,
+ SCM_VM_ABORT_CONTINUATION_HOOK,
+ SCM_VM_NUM_HOOKS,
+};
#define SCM_VM_REGULAR_ENGINE 0
#define SCM_VM_DEBUG_ENGINE 1
#define SCM_VM_NUM_ENGINES 2
struct scm_vm {
- scm_t_uint8 *ip; /* instruction pointer */
+ scm_t_uint32 *ip; /* instruction pointer */
SCM *sp; /* stack pointer */
SCM *fp; /* frame pointer */
+ SCM *stack_limit; /* stack limit address */
+ int trace_level; /* traces enabled if trace_level > 0 */
+ SCM *sp_max_since_gc; /* highest sp since last gc */
size_t stack_size; /* stack size */
SCM *stack_base; /* stack base address */
- SCM *stack_limit; /* stack limit address */
- int engine; /* which vm engine we're using */
+ SCM overflow_handler_stack; /* alist of max-stack-size -> thunk */
SCM hooks[SCM_VM_NUM_HOOKS]; /* hooks */
- SCM options; /* options */
- SCM trace_frame; /* a frame being traced */
+ int engine; /* which vm engine we're using */
};
-SCM_API SCM scm_the_vm_fluid;
-
-#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)
-
-SCM_API SCM scm_the_vm ();
-SCM_API SCM scm_make_vm (void);
-SCM_API SCM scm_vm_apply (SCM vm, SCM program, SCM args);
-SCM_API SCM scm_c_vm_run (SCM vm, SCM program, SCM *argv, int nargs);
-SCM_API SCM scm_vm_call_with_new_stack (SCM vm, SCM thunk, SCM id);
-SCM_API SCM scm_vm_option_ref (SCM vm, SCM key);
-SCM_API SCM scm_vm_option_set_x (SCM vm, SCM key, SCM val);
-
-SCM_API SCM scm_vm_version (void);
-SCM_API SCM scm_the_vm (void);
-SCM_API SCM scm_vm_p (SCM obj);
-SCM_API SCM scm_vm_ip (SCM vm);
-SCM_API SCM scm_vm_sp (SCM vm);
-SCM_API SCM scm_vm_fp (SCM vm);
-SCM_API SCM scm_vm_boot_hook (SCM vm);
-SCM_API SCM scm_vm_halt_hook (SCM vm);
-SCM_API SCM scm_vm_next_hook (SCM vm);
-SCM_API SCM scm_vm_break_hook (SCM vm);
-SCM_API SCM scm_vm_enter_hook (SCM vm);
-SCM_API SCM scm_vm_apply_hook (SCM vm);
-SCM_API SCM scm_vm_exit_hook (SCM vm);
-SCM_API SCM scm_vm_return_hook (SCM vm);
-SCM_API SCM scm_vm_option (SCM vm, SCM key);
-SCM_API SCM scm_set_vm_option_x (SCM vm, SCM key, SCM val);
-SCM_API SCM scm_vm_trace_frame (SCM vm);
+SCM_INTERNAL struct scm_vm *scm_the_vm (void);
+SCM_API SCM scm_call_with_vm (SCM proc, SCM args);
+
+SCM_API SCM scm_call_with_stack_overflow_handler (SCM limit, SCM thunk,
+ SCM handler);
+
+SCM_API SCM scm_vm_apply_hook (void);
+SCM_API SCM scm_vm_push_continuation_hook (void);
+SCM_API SCM scm_vm_pop_continuation_hook (void);
+SCM_API SCM scm_vm_abort_continuation_hook (void);
+SCM_API SCM scm_vm_next_hook (void);
+SCM_API SCM scm_vm_trace_level (void);
+SCM_API SCM scm_set_vm_trace_level_x (SCM level);
+SCM_API SCM scm_vm_engine (void);
+SCM_API SCM scm_set_vm_engine_x (SCM engine);
+SCM_API SCM scm_set_default_vm_engine_x (SCM engine);
+SCM_API void scm_c_set_vm_engine_x (int engine);
+SCM_API void scm_c_set_default_vm_engine_x (int engine);
+
+struct GC_ms_entry;
+SCM_INTERNAL struct GC_ms_entry * scm_i_vm_mark_stack (struct scm_vm *,
+ struct GC_ms_entry *,
+ struct GC_ms_entry *);
+SCM_INTERNAL void scm_i_vm_free_stack (struct scm_vm *vp);
+
+#define SCM_F_VM_CONT_PARTIAL 0x1
+#define SCM_F_VM_CONT_REWINDABLE 0x2
struct scm_vm_cont {
- scm_t_uint8 *ip;
SCM *sp;
SCM *fp;
+ scm_t_uint32 *ra;
scm_t_ptrdiff stack_size;
SCM *stack_base;
scm_t_ptrdiff reloc;
+ scm_t_dynstack *dynstack;
+ scm_t_uint32 flags;
};
-SCM_API scm_t_bits scm_tc16_vm_cont;
-#define SCM_VM_CONT_P(OBJ) SCM_SMOB_PREDICATE (scm_tc16_vm_cont, OBJ)
-#define SCM_VM_CONT_DATA(CONT) ((struct scm_vm_cont *) SCM_SMOB_DATA_1 (CONT))
-
-SCM_API SCM scm_vm_capture_continuations (void);
-SCM_API void scm_vm_reinstate_continuations (SCM conts);
+#define SCM_VM_CONT_P(OBJ) (SCM_HAS_TYP7 (OBJ, scm_tc7_vm_cont))
+#define SCM_VM_CONT_DATA(CONT) ((struct scm_vm_cont *) SCM_CELL_WORD_1 (CONT))
+#define SCM_VM_CONT_PARTIAL_P(CONT) (SCM_VM_CONT_DATA (CONT)->flags & SCM_F_VM_CONT_PARTIAL)
+#define SCM_VM_CONT_REWINDABLE_P(CONT) (SCM_VM_CONT_DATA (CONT)->flags & SCM_F_VM_CONT_REWINDABLE)
SCM_API SCM scm_load_compiled_with_vm (SCM file);
+SCM_INTERNAL SCM scm_i_call_with_current_continuation (SCM proc);
+SCM_INTERNAL SCM scm_i_capture_current_stack (void);
+SCM_INTERNAL SCM scm_i_vm_capture_stack (SCM *stack_base, SCM *fp, SCM *sp,
+ scm_t_uint32 *ra,
+ scm_t_dynstack *dynstack,
+ scm_t_uint32 flags);
+SCM_INTERNAL int scm_i_vm_cont_to_frame (SCM cont, struct scm_frame *frame);
+SCM_INTERNAL void scm_i_vm_cont_print (SCM x, SCM port,
+ scm_print_state *pstate);
+SCM_INTERNAL void scm_bootstrap_vm (void);
SCM_INTERNAL void scm_init_vm (void);
#endif /* _SCM_VM_H_ */