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8f5cfc81 | 1 | /* Copyright (C) 2001 Free Software Foundation, Inc. |
a98cef7e KN |
2 | * |
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) | |
6 | * any later version. | |
7 | * | |
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. | |
12 | * | |
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 | |
17 | * | |
18 | * As a special exception, the Free Software Foundation gives permission | |
19 | * for additional uses of the text contained in its release of GUILE. | |
20 | * | |
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. | |
26 | * | |
27 | * This exception does not however invalidate any other reasons why | |
28 | * the executable file might be covered by the GNU General Public License. | |
29 | * | |
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. | |
37 | * | |
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. */ | |
41 | ||
17e90c5e | 42 | /* This file is included in vm.c twice */ |
a98cef7e KN |
43 | |
44 | #include "vm_engine.h" | |
45 | ||
a98cef7e | 46 | static SCM |
41f248a8 | 47 | vm_run (SCM vm, SCM program, SCM args) |
a98cef7e KN |
48 | #define FUNC_NAME "vm-engine" |
49 | { | |
17e90c5e KN |
50 | /* VM registers */ |
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 */ | |
a98cef7e | 54 | |
d608d68d | 55 | /* Cache variables */ |
3d5ee0cd | 56 | struct scm_vm *vp = SCM_VM_DATA (vm); /* VM data pointer */ |
17e90c5e | 57 | struct scm_program *bp = NULL; /* program base pointer */ |
41f248a8 | 58 | SCM external = SCM_EOL; /* external environment */ |
17e90c5e | 59 | SCM *objects = NULL; /* constant objects */ |
3d5ee0cd KN |
60 | SCM *stack_base = vp->stack_base; /* stack base address */ |
61 | SCM *stack_limit = vp->stack_limit; /* stack limit address */ | |
a98cef7e | 62 | |
d608d68d | 63 | /* Internal variables */ |
17e90c5e | 64 | int nargs = 0; |
3d5ee0cd | 65 | long start_time = scm_c_get_internal_run_time (); |
17e90c5e KN |
66 | // SCM dynwinds = SCM_EOL; |
67 | SCM err_msg; | |
68 | SCM err_args; | |
69 | #if VM_USE_HOOKS | |
a98cef7e KN |
70 | SCM hook_args = SCM_LIST1 (vm); |
71 | #endif | |
72 | ||
17e90c5e | 73 | #ifdef HAVE_LABELS_AS_VALUES |
4b482259 KN |
74 | /* Jump talbe */ |
75 | static void *jump_table[] = { | |
17e90c5e | 76 | #define VM_INSTRUCTION_TO_LABEL 1 |
77c04abe KN |
77 | #include "vm_expand.h" |
78 | #include "vm_system.i" | |
79 | #include "vm_scheme.i" | |
17e90c5e | 80 | #include "vm_loader.i" |
77c04abe | 81 | #undef VM_INSTRUCTION_TO_LABEL |
4b482259 | 82 | }; |
17e90c5e | 83 | #endif |
a98cef7e | 84 | |
3d5ee0cd KN |
85 | /* Initialization */ |
86 | { | |
499a4c07 KN |
87 | SCM prog = program; |
88 | ||
89 | /* Boot program */ | |
3d5ee0cd | 90 | scm_byte_t bytes[3] = {scm_op_call, 0, scm_op_halt}; |
ac99cb0c | 91 | bytes[1] = scm_ilength (args); /* FIXME: argument overflow */ |
499a4c07 | 92 | program = scm_c_make_program (bytes, 3, SCM_BOOL_T); |
a98cef7e | 93 | |
3d5ee0cd KN |
94 | /* Initial frame */ |
95 | CACHE_REGISTER (); | |
499a4c07 | 96 | CACHE_PROGRAM (); |
3616e9e9 | 97 | PUSH (program); |
3d5ee0cd | 98 | NEW_FRAME (); |
17e90c5e | 99 | |
3d5ee0cd | 100 | /* Initial arguments */ |
3616e9e9 | 101 | PUSH (prog); |
3d5ee0cd KN |
102 | for (; !SCM_NULLP (args); args = SCM_CDR (args)) |
103 | PUSH (SCM_CAR (args)); | |
3d5ee0cd | 104 | } |
a98cef7e KN |
105 | |
106 | /* Let's go! */ | |
17e90c5e | 107 | BOOT_HOOK (); |
a98cef7e KN |
108 | |
109 | #ifndef HAVE_LABELS_AS_VALUES | |
17e90c5e KN |
110 | vm_start: |
111 | switch (*ip++) { | |
a98cef7e KN |
112 | #endif |
113 | ||
77c04abe | 114 | #include "vm_expand.h" |
a98cef7e KN |
115 | #include "vm_system.c" |
116 | #include "vm_scheme.c" | |
17e90c5e | 117 | #include "vm_loader.c" |
a98cef7e KN |
118 | |
119 | #ifndef HAVE_LABELS_AS_VALUES | |
120 | } | |
121 | #endif | |
122 | ||
17e90c5e KN |
123 | /* Errors */ |
124 | { | |
125 | vm_error_unbound: | |
fa19602c | 126 | err_msg = scm_from_locale_string ("VM: Unbound variable: ~A"); |
17e90c5e KN |
127 | goto vm_error; |
128 | ||
4c9ad01d | 129 | vm_error_wrong_type_arg: |
fa19602c | 130 | err_msg = scm_from_locale_string ("VM: Wrong type argument"); |
4c9ad01d KN |
131 | err_args = SCM_EOL; |
132 | goto vm_error; | |
133 | ||
17e90c5e | 134 | vm_error_wrong_num_args: |
fa19602c | 135 | err_msg = scm_from_locale_string ("VM: Wrong number of arguments"); |
17e90c5e KN |
136 | err_args = SCM_EOL; |
137 | goto vm_error; | |
138 | ||
139 | vm_error_wrong_type_apply: | |
fa19602c | 140 | err_msg = scm_from_locale_string ("VM: Wrong type to apply: ~S"); |
17e90c5e KN |
141 | err_args = SCM_LIST1 (program); |
142 | goto vm_error; | |
143 | ||
ac02b386 | 144 | vm_error_stack_overflow: |
fa19602c | 145 | err_msg = scm_from_locale_string ("VM: Stack overflow"); |
17e90c5e KN |
146 | err_args = SCM_EOL; |
147 | goto vm_error; | |
17e90c5e | 148 | |
ac02b386 | 149 | vm_error_stack_underflow: |
fa19602c | 150 | err_msg = scm_from_locale_string ("VM: Stack underflow"); |
17e90c5e KN |
151 | err_args = SCM_EOL; |
152 | goto vm_error; | |
153 | ||
ac02b386 KN |
154 | #if VM_CHECK_IP |
155 | vm_error_invalid_address: | |
fa19602c | 156 | err_msg = scm_from_locale_string ("VM: Invalid program address"); |
17e90c5e KN |
157 | err_args = SCM_EOL; |
158 | goto vm_error; | |
ac02b386 KN |
159 | #endif |
160 | ||
161 | #if VM_CHECK_EXTERNAL | |
162 | vm_error_external: | |
fa19602c | 163 | err_msg = scm_from_locale_string ("VM: Invalid external access"); |
ac02b386 KN |
164 | err_args = SCM_EOL; |
165 | goto vm_error; | |
166 | #endif | |
17e90c5e KN |
167 | |
168 | vm_error: | |
169 | SYNC_ALL (); | |
af988bbf | 170 | vp->last_frame = vm_heapify_frames (vm); |
ac99cb0c | 171 | scm_ithrow (sym_vm_error, SCM_LIST3 (sym_vm_run, err_msg, err_args), 1); |
17e90c5e KN |
172 | } |
173 | ||
a98cef7e KN |
174 | abort (); /* never reached */ |
175 | } | |
176 | #undef FUNC_NAME | |
17e90c5e KN |
177 | |
178 | /* | |
179 | Local Variables: | |
180 | c-file-style: "gnu" | |
181 | End: | |
182 | */ |