1 files changed, 116 insertions, 0 deletions
diff --git a/libguile/vm.h b/libguile/vm.h
new file mode 100644
index 000000000..eace1cb69
--- /dev/null
+++ b/libguile/vm.h
@@ -0,0 +1,116 @@
+/* Copyright (C) 2001, 2009 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
+ * as published by the Free Software Foundation; either version 3 of
+ * the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ */
+
+#ifndef _SCM_VM_H_
+#define _SCM_VM_H_
+
+#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);
+
+#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 *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 */
+  int engine;                   /* which vm engine we're using */
+  SCM hooks[SCM_VM_NUM_HOOKS];	/* hooks */
+  SCM options;			/* options */
+  unsigned long time;		/* time spent */
+  unsigned long clock;		/* bogos clock */
+  SCM trace_frame;              /* a frame being traced */
+};
+
+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_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_stats (SCM vm);
+SCM_API SCM scm_vm_trace_frame (SCM vm);
+
+struct scm_vm_cont {
+  scm_t_uint8 *ip;
+  SCM *sp;
+  SCM *fp;
+  scm_t_ptrdiff stack_size;
+  SCM *stack_base;
+  scm_t_ptrdiff reloc;
+};
+
+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_CELL_WORD_1 (CONT))
+
+SCM_API SCM scm_vm_capture_continuations (void);
+SCM_API void scm_vm_reinstate_continuations (SCM conts);
+
+SCM_API SCM scm_load_compiled_with_vm (SCM file);
+
+SCM_INTERNAL void scm_init_vm (void);
+
+#endif /* _SCM_VM_H_ */
+
+/*
+  Local Variables:
+  c-file-style: "gnu"
+  End:
+*/