-/* 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. */
-
-/* This file is included in vm.c twice */
-
-#include "vm-engine.h"
-
-
-static SCM
-vm_run (SCM vm, SCM program, SCM args)
-#define FUNC_NAME "vm-engine"
-{
- /* VM registers */
- register scm_byte_t *ip IP_REG; /* instruction pointer */
- register SCM *sp SP_REG; /* stack pointer */
- register SCM *fp FP_REG; /* frame pointer */
-
- /* Cache variables */
- struct scm_vm *vp = SCM_VM_DATA (vm); /* VM data pointer */
- struct scm_program *bp = NULL; /* program base pointer */
- SCM external = SCM_EOL; /* external environment */
- SCM *objects = NULL; /* constant objects */
- scm_t_array_handle objects_handle; /* handle of the OBJECTS array */
- size_t object_count; /* length of OBJECTS */
- SCM *stack_base = vp->stack_base; /* stack base address */
- SCM *stack_limit = vp->stack_limit; /* stack limit address */
-
- /* Internal variables */
- int nargs = 0;
- long start_time = scm_c_get_internal_run_time ();
- // SCM dynwinds = SCM_EOL;
- SCM err_msg;
- SCM err_args;
-#if VM_USE_HOOKS
- SCM hook_args = SCM_LIST1 (vm);
-#endif
- struct vm_unwind_data wind_data;
-
- /* dynwind ended in the halt instruction */
- scm_dynwind_begin (SCM_F_DYNWIND_REWINDABLE);
- wind_data.vp = vp;
- wind_data.sp = vp->sp;
- wind_data.fp = vp->fp;
- wind_data.this_frame = vp->this_frame;
- scm_dynwind_unwind_handler (vm_reset_stack, &wind_data, 0);
-
-
-#ifdef HAVE_LABELS_AS_VALUES
- /* Jump table */
- static void *jump_table[] = {
-#define VM_INSTRUCTION_TO_LABEL 1
-#include "vm-expand.h"
-#include "vm-i-system.i"
-#include "vm-i-scheme.i"
-#include "vm-i-loader.i"
-#undef VM_INSTRUCTION_TO_LABEL
- };
-#endif
-
- /* Initialization */
- {
- SCM prog = program;
-
- /* Boot program */
- scm_byte_t bytes[3] = {scm_op_call, 0, scm_op_halt};
- bytes[1] = scm_ilength (args); /* FIXME: argument overflow */
- program = scm_c_make_program (bytes, 3, SCM_BOOL_F);
-
- /* Initial frame */
- CACHE_REGISTER ();
- CACHE_PROGRAM ();
- PUSH (program);
- NEW_FRAME ();
-
- /* Initial arguments */
- PUSH (prog);
- for (; !SCM_NULLP (args); args = SCM_CDR (args))
- PUSH (SCM_CAR (args));
- }
-
- /* Let's go! */
- BOOT_HOOK ();
-
-#ifndef HAVE_LABELS_AS_VALUES
- vm_start:
- switch (*ip++) {
-#endif
-
-#include "vm-expand.h"
-#include "vm-i-system.c"
-#include "vm-i-scheme.c"
-#include "vm-i-loader.c"
-
-#ifndef HAVE_LABELS_AS_VALUES
- }
-#endif
-
- /* Errors */
- {
- vm_error_unbound:
- err_msg = scm_from_locale_string ("VM: Unbound variable: ~A");
- goto vm_error;
-
- vm_error_wrong_type_arg:
- err_msg = scm_from_locale_string ("VM: Wrong type argument");
- err_args = SCM_EOL;
- goto vm_error;
-
- vm_error_wrong_num_args:
- err_msg = scm_from_locale_string ("VM: Wrong number of arguments");
- err_args = SCM_EOL;
- goto vm_error;
-
- vm_error_wrong_type_apply:
- err_msg = scm_from_locale_string ("VM: Wrong type to apply: ~S "
- "[IP offset: ~a]");
- err_args = SCM_LIST2 (program,
- SCM_I_MAKINUM (ip - bp->base));
- goto vm_error;
-
- vm_error_stack_overflow:
- err_msg = scm_from_locale_string ("VM: Stack overflow");
- err_args = SCM_EOL;
- goto vm_error;
-
- vm_error_stack_underflow:
- err_msg = scm_from_locale_string ("VM: Stack underflow");
- err_args = SCM_EOL;
- goto vm_error;
-
-#if VM_CHECK_IP
- vm_error_invalid_address:
- err_msg = scm_from_locale_string ("VM: Invalid program address");
- err_args = SCM_EOL;
- goto vm_error;
-#endif
-
-#if VM_CHECK_EXTERNAL
- vm_error_external:
- err_msg = scm_from_locale_string ("VM: Invalid external access");
- err_args = SCM_EOL;
- goto vm_error;
-#endif
-
-#if VM_CHECK_OBJECT
- vm_error_object:
- err_msg = scm_from_locale_string ("VM: Invalid object table access");
- err_args = SCM_EOL;
- goto vm_error;
-#endif
-
- vm_error:
- SYNC_ALL ();
- if (objects)
- scm_array_handle_release (&objects_handle);
-
- scm_ithrow (sym_vm_error, SCM_LIST3 (sym_vm_run, err_msg, err_args), 1);
- }
-
- abort (); /* never reached */
-}
-#undef FUNC_NAME
-
-/*
- Local Variables:
- c-file-style: "gnu"
- End:
-*/
+/* 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
+ */
+
+/* This file is included in vm.c multiple times */
+
+#if (VM_ENGINE == SCM_VM_REGULAR_ENGINE)
+#define VM_USE_HOOKS 0 /* Various hooks */
+#define VM_USE_CLOCK 0 /* Bogoclock */
+#define VM_CHECK_OBJECT 1 /* Check object table */
+#define VM_CHECK_FREE_VARIABLES 1 /* Check free variable access */
+#define VM_PUSH_DEBUG_FRAMES 0 /* Push frames onto the evaluator debug stack */
+#elif (VM_ENGINE == SCM_VM_DEBUG_ENGINE)
+#define VM_USE_HOOKS 1
+#define VM_USE_CLOCK 1
+#define VM_CHECK_OBJECT 1
+#define VM_CHECK_FREE_VARIABLES 1
+#define VM_PUSH_DEBUG_FRAMES 1
+#else
+#error unknown debug engine VM_ENGINE
+#endif
+
+#include "vm-engine.h"
+
+
+static SCM
+VM_NAME (struct scm_vm *vp, SCM program, SCM *argv, int nargs)
+{
+ /* VM registers */
+ register scm_t_uint8 *ip IP_REG; /* instruction pointer */
+ register SCM *sp SP_REG; /* stack pointer */
+ register SCM *fp FP_REG; /* frame pointer */
+
+ /* Cache variables */
+ struct scm_objcode *bp = NULL; /* program base pointer */
+ SCM *free_vars = NULL; /* free variables */
+ size_t free_vars_count = 0; /* length of FREE_VARS */
+ SCM *objects = NULL; /* constant objects */
+ size_t object_count = 0; /* length of OBJECTS */
+ SCM *stack_limit = vp->stack_limit; /* stack limit address */
+
+ /* Internal variables */
+ int nvalues = 0;
+ long start_time = scm_c_get_internal_run_time ();
+ SCM finish_args; /* used both for returns: both in error
+ and normal situations */
+#if VM_USE_HOOKS
+ SCM hook_args = SCM_EOL;
+#endif
+
+#ifdef HAVE_LABELS_AS_VALUES
+ static void **jump_table = NULL;
+#endif
+
+#if VM_PUSH_DEBUG_FRAMES
+ scm_t_debug_frame debug;
+ scm_t_debug_info debug_vect_body;
+ debug.status = SCM_VOIDFRAME;
+#endif
+
+#ifdef HAVE_LABELS_AS_VALUES
+ if (SCM_UNLIKELY (!jump_table))
+ {
+ int i;
+ jump_table = malloc (SCM_VM_NUM_INSTRUCTIONS * sizeof(void*));
+ for (i = 0; i < SCM_VM_NUM_INSTRUCTIONS; i++)
+ jump_table[i] = &&vm_error_bad_instruction;
+#define VM_INSTRUCTION_TO_LABEL 1
+#include <libguile/vm-expand.h>
+#include <libguile/vm-i-system.i>
+#include <libguile/vm-i-scheme.i>
+#include <libguile/vm-i-loader.i>
+#undef VM_INSTRUCTION_TO_LABEL
+ }
+#endif
+
+ /* Initialization */
+ {
+ SCM prog = program;
+
+ /* Boot program */
+ program = vm_make_boot_program (nargs);
+
+#if VM_PUSH_DEBUG_FRAMES
+ debug.prev = scm_i_last_debug_frame ();
+ debug.status = SCM_APPLYFRAME;
+ debug.vect = &debug_vect_body;
+ debug.vect[0].a.proc = program; /* the boot program */
+ debug.vect[0].a.args = SCM_EOL;
+ scm_i_set_last_debug_frame (&debug);
+#endif
+
+ /* Initial frame */
+ CACHE_REGISTER ();
+ PUSH ((SCM)fp); /* dynamic link */
+ PUSH (0); /* mvra */
+ PUSH ((SCM)ip); /* ra */
+ CACHE_PROGRAM ();
+ PUSH (program);
+ fp = sp + 1;
+ ip = bp->base;
+ /* MV-call frame, function & arguments */
+ PUSH ((SCM)fp); /* dynamic link */
+ PUSH (0); /* mvra */
+ PUSH (0); /* ra */
+ PUSH (prog);
+ if (SCM_UNLIKELY (sp + nargs >= stack_limit))
+ goto vm_error_too_many_args;
+ while (nargs--)
+ PUSH (*argv++);
+ }
+
+ /* Let's go! */
+ BOOT_HOOK ();
+ NEXT;
+
+#ifndef HAVE_LABELS_AS_VALUES
+ vm_start:
+ switch ((*ip++) & SCM_VM_INSTRUCTION_MASK) {
+#endif
+
+#include "vm-expand.h"
+#include "vm-i-system.c"
+#include "vm-i-scheme.c"
+#include "vm-i-loader.c"
+
+#ifndef HAVE_LABELS_AS_VALUES
+ default:
+ goto vm_error_bad_instruction;
+ }
+#endif
+
+
+ vm_done:
+ SYNC_ALL ();
+#if VM_PUSH_DEBUG_FRAMES
+ scm_i_set_last_debug_frame (debug.prev);
+#endif
+ return finish_args;
+
+ /* Errors */
+ {
+ SCM err_msg;
+
+ vm_error_bad_instruction:
+ err_msg = scm_from_locale_string ("VM: Bad instruction: ~s");
+ finish_args = scm_list_1 (scm_from_uchar (ip[-1]));
+ goto vm_error;
+
+ vm_error_unbound:
+ err_msg = scm_from_locale_string ("VM: Unbound variable: ~s");
+ goto vm_error;
+
+ vm_error_wrong_type_arg:
+ err_msg = scm_from_locale_string ("VM: Wrong type argument");
+ finish_args = SCM_EOL;
+ goto vm_error;
+
+ vm_error_too_many_args:
+ err_msg = scm_from_locale_string ("VM: Too many arguments");
+ finish_args = scm_list_1 (scm_from_int (nargs));
+ goto vm_error;
+
+ vm_error_wrong_num_args:
+ /* nargs and program are valid */
+ SYNC_ALL ();
+ scm_wrong_num_args (program);
+ /* shouldn't get here */
+ goto vm_error;
+
+ vm_error_wrong_type_apply:
+ SYNC_ALL ();
+ scm_error (scm_misc_error_key, FUNC_NAME, "Wrong type to apply: ~S",
+ scm_list_1 (program), SCM_BOOL_F);
+ goto vm_error;
+
+ vm_error_stack_overflow:
+ err_msg = scm_from_locale_string ("VM: Stack overflow");
+ finish_args = SCM_EOL;
+ goto vm_error;
+
+ vm_error_stack_underflow:
+ err_msg = scm_from_locale_string ("VM: Stack underflow");
+ finish_args = SCM_EOL;
+ goto vm_error;
+
+ vm_error_improper_list:
+ err_msg = scm_from_locale_string ("Expected a proper list, but got object with tail ~s");
+ goto vm_error;
+
+ vm_error_not_a_pair:
+ SYNC_ALL ();
+ scm_wrong_type_arg_msg (FUNC_NAME, 1, finish_args, "pair");
+ /* shouldn't get here */
+ goto vm_error;
+
+ vm_error_not_a_bytevector:
+ SYNC_ALL ();
+ scm_wrong_type_arg_msg (FUNC_NAME, 1, finish_args, "bytevector");
+ /* shouldn't get here */
+ goto vm_error;
+
+ vm_error_no_values:
+ err_msg = scm_from_locale_string ("Zero values returned to single-valued continuation");
+ finish_args = SCM_EOL;
+ goto vm_error;
+
+ vm_error_not_enough_values:
+ err_msg = scm_from_locale_string ("Too few values returned to continuation");
+ finish_args = SCM_EOL;
+ goto vm_error;
+
+ vm_error_bad_wide_string_length:
+ err_msg = scm_from_locale_string ("VM: Bad wide string length: ~S");
+ goto vm_error;
+
+#if VM_CHECK_IP
+ vm_error_invalid_address:
+ err_msg = scm_from_locale_string ("VM: Invalid program address");
+ finish_args = SCM_EOL;
+ goto vm_error;
+#endif
+
+#if VM_CHECK_OBJECT
+ vm_error_object:
+ err_msg = scm_from_locale_string ("VM: Invalid object table access");
+ finish_args = SCM_EOL;
+ goto vm_error;
+#endif
+
+#if VM_CHECK_FREE_VARIABLES
+ vm_error_free_variable:
+ err_msg = scm_from_locale_string ("VM: Invalid free variable access");
+ finish_args = SCM_EOL;
+ goto vm_error;
+#endif
+
+ vm_error:
+ SYNC_ALL ();
+
+ scm_ithrow (sym_vm_error, scm_list_3 (sym_vm_run, err_msg, finish_args),
+ 1);
+ }
+
+ abort (); /* never reached */
+}
+
+#undef VM_USE_HOOKS
+#undef VM_USE_CLOCK
+#undef VM_CHECK_OBJECT
+#undef VM_CHECK_FREE_VARIABLE
+#undef VM_PUSH_DEBUG_FRAMES
+
+/*
+ Local Variables:
+ c-file-style: "gnu"
+ End:
+*/
HCoop / bpt / guile.git / blobdiff