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8f5cfc81 | 1 | /* Copyright (C) 2001 Free Software Foundation, Inc. |
17e90c5e 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 | ||
42 | #include <string.h> | |
43 | #include "instructions.h" | |
44 | #include "programs.h" | |
45 | #include "vm.h" | |
46 | ||
47 | \f | |
f9e8c09d | 48 | scm_t_bits scm_tc16_program; |
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49 | |
50 | static SCM zero_vector; | |
51 | ||
52 | SCM | |
53 | scm_c_make_program (void *addr, size_t size, SCM holder) | |
54 | #define FUNC_NAME "scm_c_make_program" | |
55 | { | |
d8eeb67c LC |
56 | struct scm_program *p = scm_gc_malloc (sizeof (struct scm_program), |
57 | "program"); | |
17e90c5e KN |
58 | p->size = size; |
59 | p->nargs = 0; | |
60 | p->nrest = 0; | |
61 | p->nlocs = 0; | |
3d5ee0cd | 62 | p->nexts = 0; |
ac99cb0c | 63 | p->meta = SCM_BOOL_F; |
17e90c5e KN |
64 | p->objs = zero_vector; |
65 | p->external = SCM_EOL; | |
66 | p->holder = holder; | |
67 | ||
68 | /* If nobody holds bytecode's address, then allocate a new memory */ | |
3d5ee0cd | 69 | if (SCM_FALSEP (holder)) |
d8eeb67c | 70 | p->base = scm_gc_malloc (size, "program-base"); |
17e90c5e KN |
71 | else |
72 | p->base = addr; | |
73 | ||
74 | SCM_RETURN_NEWSMOB (scm_tc16_program, p); | |
75 | } | |
76 | #undef FUNC_NAME | |
77 | ||
78 | SCM | |
3d5ee0cd | 79 | scm_c_make_closure (SCM program, SCM external) |
17e90c5e | 80 | { |
ac02b386 KN |
81 | SCM prog = scm_c_make_program (0, 0, program); |
82 | *SCM_PROGRAM_DATA (prog) = *SCM_PROGRAM_DATA (program); | |
ac99cb0c | 83 | SCM_PROGRAM_DATA (prog)->external = external; |
17e90c5e KN |
84 | return prog; |
85 | } | |
86 | ||
87 | static SCM | |
88 | program_mark (SCM obj) | |
89 | { | |
90 | struct scm_program *p = SCM_PROGRAM_DATA (obj); | |
ac99cb0c | 91 | scm_gc_mark (p->meta); |
17e90c5e KN |
92 | scm_gc_mark (p->objs); |
93 | scm_gc_mark (p->external); | |
94 | return p->holder; | |
95 | } | |
96 | ||
97 | static scm_sizet | |
98 | program_free (SCM obj) | |
99 | { | |
100 | struct scm_program *p = SCM_PROGRAM_DATA (obj); | |
101 | scm_sizet size = (sizeof (struct scm_program)); | |
d8eeb67c | 102 | |
17e90c5e | 103 | if (SCM_FALSEP (p->holder)) |
d8eeb67c LC |
104 | scm_gc_free (p->base, p->size, "program-base"); |
105 | ||
106 | scm_gc_free (p, size, "program"); | |
107 | ||
108 | return 0; | |
17e90c5e KN |
109 | } |
110 | ||
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111 | static SCM |
112 | program_apply (SCM program, SCM args) | |
113 | { | |
499a4c07 | 114 | return scm_vm_apply (scm_the_vm (), program, args); |
17e90c5e KN |
115 | } |
116 | ||
117 | \f | |
118 | /* | |
119 | * Scheme interface | |
120 | */ | |
121 | ||
122 | SCM_DEFINE (scm_program_p, "program?", 1, 0, 0, | |
123 | (SCM obj), | |
124 | "") | |
125 | #define FUNC_NAME s_scm_program_p | |
126 | { | |
127 | return SCM_BOOL (SCM_PROGRAM_P (obj)); | |
128 | } | |
129 | #undef FUNC_NAME | |
130 | ||
ac99cb0c KN |
131 | SCM_DEFINE (scm_program_base, "program-base", 1, 0, 0, |
132 | (SCM program), | |
133 | "") | |
134 | #define FUNC_NAME s_scm_program_base | |
135 | { | |
136 | SCM_VALIDATE_PROGRAM (1, program); | |
137 | ||
e74a58f2 | 138 | return scm_ulong2num ((unsigned long) SCM_PROGRAM_DATA (program)->base); |
ac99cb0c KN |
139 | } |
140 | #undef FUNC_NAME | |
141 | ||
17e90c5e KN |
142 | SCM_DEFINE (scm_program_arity, "program-arity", 1, 0, 0, |
143 | (SCM program), | |
144 | "") | |
145 | #define FUNC_NAME s_scm_program_arity | |
ac99cb0c KN |
146 | { |
147 | struct scm_program *p; | |
148 | ||
149 | SCM_VALIDATE_PROGRAM (1, program); | |
150 | ||
151 | p = SCM_PROGRAM_DATA (program); | |
152 | return SCM_LIST4 (SCM_MAKINUM (p->nargs), | |
153 | SCM_MAKINUM (p->nrest), | |
154 | SCM_MAKINUM (p->nlocs), | |
155 | SCM_MAKINUM (p->nexts)); | |
156 | } | |
157 | #undef FUNC_NAME | |
158 | ||
159 | SCM_DEFINE (scm_program_meta, "program-meta", 1, 0, 0, | |
160 | (SCM program), | |
161 | "") | |
162 | #define FUNC_NAME s_scm_program_meta | |
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163 | { |
164 | SCM_VALIDATE_PROGRAM (1, program); | |
ac99cb0c | 165 | return SCM_PROGRAM_DATA (program)->meta; |
17e90c5e KN |
166 | } |
167 | #undef FUNC_NAME | |
168 | ||
169 | SCM_DEFINE (scm_program_objects, "program-objects", 1, 0, 0, | |
170 | (SCM program), | |
171 | "") | |
172 | #define FUNC_NAME s_scm_program_objects | |
173 | { | |
174 | SCM_VALIDATE_PROGRAM (1, program); | |
ac99cb0c | 175 | return SCM_PROGRAM_DATA (program)->objs; |
17e90c5e KN |
176 | } |
177 | #undef FUNC_NAME | |
178 | ||
179 | SCM_DEFINE (scm_program_external, "program-external", 1, 0, 0, | |
180 | (SCM program), | |
181 | "") | |
182 | #define FUNC_NAME s_scm_program_external | |
183 | { | |
184 | SCM_VALIDATE_PROGRAM (1, program); | |
ac99cb0c | 185 | return SCM_PROGRAM_DATA (program)->external; |
17e90c5e KN |
186 | } |
187 | #undef FUNC_NAME | |
188 | ||
189 | SCM_DEFINE (scm_program_bytecode, "program-bytecode", 1, 0, 0, | |
190 | (SCM program), | |
191 | "") | |
192 | #define FUNC_NAME s_scm_program_bytecode | |
193 | { | |
194 | SCM_VALIDATE_PROGRAM (1, program); | |
ac99cb0c KN |
195 | return scm_makfromstr (SCM_PROGRAM_DATA (program)->base, |
196 | SCM_PROGRAM_DATA (program)->size, 0); | |
17e90c5e KN |
197 | } |
198 | #undef FUNC_NAME | |
199 | ||
200 | \f | |
201 | void | |
202 | scm_init_programs (void) | |
203 | { | |
204 | zero_vector = scm_permanent_object (scm_c_make_vector (0, SCM_BOOL_F)); | |
205 | ||
206 | scm_tc16_program = scm_make_smob_type ("program", 0); | |
207 | scm_set_smob_mark (scm_tc16_program, program_mark); | |
208 | scm_set_smob_free (scm_tc16_program, program_free); | |
17e90c5e KN |
209 | scm_set_smob_apply (scm_tc16_program, program_apply, 0, 0, 1); |
210 | ||
211 | #ifndef SCM_MAGIC_SNARFER | |
212 | #include "programs.x" | |
213 | #endif | |
214 | } | |
215 | ||
216 | /* | |
217 | Local Variables: | |
218 | c-file-style: "gnu" | |
219 | End: | |
220 | */ |