1 /* Copyright (C) 2000 Free Software Foundation, Inc.
3 * This program is free software; you can redistribute it and/or modify
4 * it under the terms of the GNU General Public License as published by
5 * the Free Software Foundation; either version 2, or (at your option)
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
13 * You should have received a copy of the GNU General Public License
14 * along with this software; see the file COPYING. If not, write to
15 * the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
16 * Boston, MA 02111-1307 USA
18 * As a special exception, the Free Software Foundation gives permission
19 * for additional uses of the text contained in its release of GUILE.
21 * The exception is that, if you link the GUILE library with other files
22 * to produce an executable, this does not by itself cause the
23 * resulting executable to be covered by the GNU General Public License.
24 * Your use of that executable is in no way restricted on account of
25 * linking the GUILE library code into it.
27 * This exception does not however invalidate any other reasons why
28 * the executable file might be covered by the GNU General Public License.
30 * This exception applies only to the code released by the
31 * Free Software Foundation under the name GUILE. If you copy
32 * code from other Free Software Foundation releases into a copy of
33 * GUILE, as the General Public License permits, the exception does
34 * not apply to the code that you add in this way. To avoid misleading
35 * anyone as to the status of such modified files, you must delete
36 * this exception notice from them.
38 * If you write modifications of your own for GUILE, it is your choice
39 * whether to permit this exception to apply to your modifications.
40 * If you do not wish that, delete this exception notice. */
42 /* This file is included in vm.c twice */
44 #include "vm_engine.h"
47 vm_engine (SCM vm
, SCM program
, SCM args
)
48 #define FUNC_NAME "vm-engine"
51 register scm_byte_t
*ip IP_REG
; /* instruction pointer */
52 register SCM
*sp SP_REG
; /* stack pointer */
53 register SCM
*fp FP_REG
; /* frame pointer */
56 struct scm_vm
*vp
= SCM_VM_DATA (vm
); /* VM data pointer */
57 struct scm_program
*bp
= NULL
; /* program base pointer */
58 SCM external
; /* external environment */
59 SCM
*objects
= NULL
; /* constant objects */
60 SCM
*stack_base
= vp
->stack_base
; /* stack base address */
61 SCM
*stack_limit
= vp
->stack_limit
; /* stack limit address */
63 /* Internal variables */
65 long start_time
= scm_c_get_internal_run_time ();
66 // SCM dynwinds = SCM_EOL;
70 SCM hook_args
= SCM_LIST1 (vm
);
73 #ifdef HAVE_LABELS_AS_VALUES
75 static void *jump_table
[] = {
76 #define VM_INSTRUCTION_TO_LABEL 1
77 #include "vm_expand.h"
78 #include "vm_system.i"
79 #include "vm_scheme.i"
80 #include "vm_number.i"
81 #include "vm_loader.i"
82 #undef VM_INSTRUCTION_TO_LABEL
91 scm_byte_t bytes
[3] = {scm_op_call
, 0, scm_op_halt
};
92 bytes
[1] = scm_ilength (args
);
93 program
= scm_c_make_program (bytes
, 3, SCM_BOOL_T
);
100 /* Initial arguments */
101 for (; !SCM_NULLP (args
); args
= SCM_CDR (args
))
102 PUSH (SCM_CAR (args
));
109 #ifndef HAVE_LABELS_AS_VALUES
114 #include "vm_expand.h"
115 #include "vm_system.c"
116 #include "vm_scheme.c"
117 #include "vm_number.c"
118 #include "vm_loader.c"
120 #ifndef HAVE_LABELS_AS_VALUES
127 err_msg
= scm_makfrom0str ("Unbound variable: ~A");
130 vm_error_wrong_num_args
:
131 err_msg
= scm_makfrom0str ("Wrong number of arguments");
135 vm_error_wrong_type_apply
:
136 err_msg
= scm_makfrom0str ("Wrong type to apply: ~S");
137 err_args
= SCM_LIST1 (program
);
141 vm_error_invalid_address
:
142 err_msg
= scm_makfrom0str ("Invalid program address");
147 vm_error_stack_overflow
:
148 err_msg
= scm_makfrom0str ("Stack overflow");
152 vm_error_stack_underflow
:
153 err_msg
= scm_makfrom0str ("Stack underflow");
159 scm_ithrow (sym_vm_error
,
160 SCM_LIST4 (sym_vm_engine
, err_msg
, err_args
,
161 scm_vm_current_frame (vm
)),
165 abort (); /* never reached */