Commit | Line | Data |
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f8fb13ef | 1 | /* Copyright (C) 2001, 2009, 2010, 2011, 2012, 2013 Free Software Foundation, Inc. |
ac99cb0c | 2 | * |
560b9c25 | 3 | * This library is free software; you can redistribute it and/or |
53befeb7 NJ |
4 | * modify it under the terms of the GNU Lesser General Public License |
5 | * as published by the Free Software Foundation; either version 3 of | |
6 | * the License, or (at your option) any later version. | |
ac99cb0c | 7 | * |
53befeb7 NJ |
8 | * This library is distributed in the hope that it will be useful, but |
9 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
560b9c25 AW |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
11 | * Lesser General Public License for more details. | |
ac99cb0c | 12 | * |
560b9c25 AW |
13 | * You should have received a copy of the GNU Lesser General Public |
14 | * License along with this library; if not, write to the Free Software | |
53befeb7 NJ |
15 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
16 | * 02110-1301 USA | |
560b9c25 | 17 | */ |
ac99cb0c | 18 | |
13c47753 AW |
19 | #if HAVE_CONFIG_H |
20 | # include <config.h> | |
21 | #endif | |
22 | ||
da8b4747 | 23 | #include <stdlib.h> |
ac99cb0c | 24 | #include <string.h> |
560b9c25 | 25 | #include "_scm.h" |
ac99cb0c | 26 | #include "frames.h" |
89b235af | 27 | #include "vm.h" |
0fc9040f LC |
28 | #include <verify.h> |
29 | ||
30 | /* Make sure assumptions on the layout of `struct scm_vm_frame' hold. */ | |
31 | verify (sizeof (SCM) == sizeof (SCM *)); | |
b636cdb0 | 32 | verify (sizeof (struct scm_vm_frame) == 3 * sizeof (SCM)); |
0fc9040f | 33 | verify (offsetof (struct scm_vm_frame, dynamic_link) == 0); |
ac99cb0c KN |
34 | |
35 | \f | |
0fc9040f LC |
36 | #define RELOC(frame, val) \ |
37 | (((SCM *) (val)) + SCM_VM_FRAME_OFFSET (frame)) | |
ac99cb0c KN |
38 | |
39 | SCM | |
5515edc5 | 40 | scm_c_make_frame (enum scm_vm_frame_kind frame_kind, void *stack_holder, |
050a40db AW |
41 | scm_t_ptrdiff fp_offset, scm_t_ptrdiff sp_offset, |
42 | scm_t_uint32 *ip) | |
ac99cb0c | 43 | { |
aa3f6951 AW |
44 | struct scm_frame *p = scm_gc_malloc (sizeof (struct scm_frame), |
45 | "vmframe"); | |
b1b942b7 | 46 | p->stack_holder = stack_holder; |
89b235af AW |
47 | p->fp_offset = fp_offset; |
48 | p->sp_offset = sp_offset; | |
b1b942b7 | 49 | p->ip = ip; |
050a40db | 50 | return scm_cell (scm_tc7_frame | (frame_kind << 8), (scm_t_bits)p); |
ac99cb0c KN |
51 | } |
52 | ||
6f3b0cc2 AW |
53 | void |
54 | scm_i_frame_print (SCM frame, SCM port, scm_print_state *pstate) | |
2f9769b6 | 55 | { |
0607ebbf | 56 | scm_puts_unlocked ("#<frame ", port); |
2f9769b6 | 57 | scm_uintprint (SCM_UNPACK (frame), 16, port); |
0607ebbf | 58 | scm_putc_unlocked (' ', port); |
aa3f6951 | 59 | scm_write (scm_frame_procedure (frame), port); |
2f9769b6 | 60 | /* don't write args, they can get us into trouble. */ |
0607ebbf | 61 | scm_puts_unlocked (">", port); |
2f9769b6 AW |
62 | } |
63 | ||
89b235af AW |
64 | SCM* |
65 | scm_i_frame_stack_base (SCM frame) | |
66 | #define FUNC_NAME "frame-stack-base" | |
67 | { | |
5515edc5 | 68 | void *stack_holder; |
89b235af AW |
69 | |
70 | SCM_VALIDATE_VM_FRAME (1, frame); | |
71 | ||
72 | stack_holder = SCM_VM_FRAME_STACK_HOLDER (frame); | |
73 | ||
5515edc5 AW |
74 | switch (SCM_VM_FRAME_KIND (frame)) |
75 | { | |
76 | case SCM_VM_FRAME_KIND_CONT: | |
77 | return ((struct scm_vm_cont *) stack_holder)->stack_base; | |
89b235af | 78 | |
5515edc5 AW |
79 | case SCM_VM_FRAME_KIND_VM: |
80 | return ((struct scm_vm *) stack_holder)->stack_base; | |
81 | ||
82 | default: | |
83 | abort (); | |
84 | } | |
89b235af AW |
85 | } |
86 | #undef FUNC_NAME | |
87 | ||
89b235af AW |
88 | scm_t_ptrdiff |
89 | scm_i_frame_offset (SCM frame) | |
90 | #define FUNC_NAME "frame-offset" | |
91 | { | |
5515edc5 | 92 | void *stack_holder; |
89b235af AW |
93 | |
94 | SCM_VALIDATE_VM_FRAME (1, frame); | |
95 | ||
96 | stack_holder = SCM_VM_FRAME_STACK_HOLDER (frame); | |
97 | ||
5515edc5 AW |
98 | switch (SCM_VM_FRAME_KIND (frame)) |
99 | { | |
100 | case SCM_VM_FRAME_KIND_CONT: | |
101 | return ((struct scm_vm_cont *) stack_holder)->reloc; | |
102 | ||
103 | case SCM_VM_FRAME_KIND_VM: | |
104 | return 0; | |
89b235af | 105 | |
5515edc5 AW |
106 | default: |
107 | abort (); | |
108 | } | |
89b235af AW |
109 | } |
110 | #undef FUNC_NAME | |
111 | ||
3d94d862 | 112 | \f |
ac99cb0c KN |
113 | /* Scheme interface */ |
114 | ||
aa3f6951 | 115 | SCM_DEFINE (scm_frame_p, "frame?", 1, 0, 0, |
ac99cb0c KN |
116 | (SCM obj), |
117 | "") | |
aa3f6951 | 118 | #define FUNC_NAME s_scm_frame_p |
ac99cb0c | 119 | { |
5c8cefe5 | 120 | return scm_from_bool (SCM_VM_FRAME_P (obj)); |
b1b942b7 AW |
121 | } |
122 | #undef FUNC_NAME | |
123 | ||
aa3f6951 | 124 | SCM_DEFINE (scm_frame_procedure, "frame-procedure", 1, 0, 0, |
b1b942b7 AW |
125 | (SCM frame), |
126 | "") | |
aa3f6951 | 127 | #define FUNC_NAME s_scm_frame_procedure |
b1b942b7 AW |
128 | { |
129 | SCM_VALIDATE_VM_FRAME (1, frame); | |
130 | return SCM_FRAME_PROGRAM (SCM_VM_FRAME_FP (frame)); | |
131 | } | |
132 | #undef FUNC_NAME | |
133 | ||
aa3f6951 AW |
134 | SCM_DEFINE (scm_frame_arguments, "frame-arguments", 1, 0, 0, |
135 | (SCM frame), | |
136 | "") | |
137 | #define FUNC_NAME s_scm_frame_arguments | |
b1b942b7 | 138 | { |
6c6a4439 | 139 | static SCM var = SCM_BOOL_F; |
b1b942b7 AW |
140 | |
141 | SCM_VALIDATE_VM_FRAME (1, frame); | |
142 | ||
6c6a4439 AW |
143 | if (scm_is_false (var)) |
144 | var = scm_c_module_lookup (scm_c_resolve_module ("system vm frame"), | |
aa3f6951 | 145 | "frame-arguments"); |
b1b942b7 | 146 | |
6c6a4439 | 147 | return scm_call_1 (SCM_VARIABLE_REF (var), frame); |
ac99cb0c KN |
148 | } |
149 | #undef FUNC_NAME | |
150 | ||
423fca76 AW |
151 | SCM_DEFINE (scm_frame_source, "frame-source", 1, 0, 0, |
152 | (SCM frame), | |
153 | "") | |
154 | #define FUNC_NAME s_scm_frame_source | |
ac99cb0c | 155 | { |
423fca76 | 156 | SCM_VALIDATE_VM_FRAME (1, frame); |
b1b942b7 | 157 | |
581a4eb8 | 158 | return scm_find_source_for_addr (scm_frame_instruction_pointer (frame)); |
ac99cb0c | 159 | } |
423fca76 | 160 | #undef FUNC_NAME |
ac99cb0c | 161 | |
aa3f6951 | 162 | SCM_DEFINE (scm_frame_num_locals, "frame-num-locals", 1, 0, 0, |
6c6a4439 AW |
163 | (SCM frame), |
164 | "") | |
aa3f6951 | 165 | #define FUNC_NAME s_scm_frame_num_locals |
6c6a4439 | 166 | { |
b636cdb0 | 167 | SCM *fp, *sp; |
6c6a4439 AW |
168 | |
169 | SCM_VALIDATE_VM_FRAME (1, frame); | |
170 | ||
b636cdb0 | 171 | fp = SCM_VM_FRAME_FP (frame); |
510ca126 | 172 | sp = SCM_VM_FRAME_SP (frame); |
510ca126 | 173 | |
b636cdb0 | 174 | return scm_from_ptrdiff_t (SCM_FRAME_NUM_LOCALS (fp, sp)); |
6c6a4439 AW |
175 | } |
176 | #undef FUNC_NAME | |
177 | ||
aa3f6951 | 178 | SCM_DEFINE (scm_frame_local_ref, "frame-local-ref", 2, 0, 0, |
af988bbf | 179 | (SCM frame, SCM index), |
ac99cb0c | 180 | "") |
aa3f6951 | 181 | #define FUNC_NAME s_scm_frame_local_ref |
ac99cb0c | 182 | { |
b636cdb0 | 183 | SCM *fp, *sp; |
b1b942b7 | 184 | unsigned int i; |
b1b942b7 | 185 | |
6c6a4439 | 186 | SCM_VALIDATE_VM_FRAME (1, frame); |
b1b942b7 | 187 | SCM_VALIDATE_UINT_COPY (2, index, i); |
b1b942b7 | 188 | |
b636cdb0 | 189 | fp = SCM_VM_FRAME_FP (frame); |
6c6a4439 | 190 | sp = SCM_VM_FRAME_SP (frame); |
f8085163 | 191 | |
b636cdb0 AW |
192 | if (i < SCM_FRAME_NUM_LOCALS (fp, sp)) |
193 | return SCM_FRAME_LOCAL (fp, i); | |
f8085163 | 194 | |
6c6a4439 | 195 | SCM_OUT_OF_RANGE (SCM_ARG2, index); |
af988bbf KN |
196 | } |
197 | #undef FUNC_NAME | |
ac99cb0c | 198 | |
aa3f6951 AW |
199 | /* Need same not-yet-active frame logic here as in frame-num-locals */ |
200 | SCM_DEFINE (scm_frame_local_set_x, "frame-local-set!", 3, 0, 0, | |
af988bbf KN |
201 | (SCM frame, SCM index, SCM val), |
202 | "") | |
aa3f6951 | 203 | #define FUNC_NAME s_scm_frame_local_set_x |
af988bbf | 204 | { |
b636cdb0 | 205 | SCM *fp, *sp; |
b1b942b7 | 206 | unsigned int i; |
b1b942b7 | 207 | |
6c6a4439 | 208 | SCM_VALIDATE_VM_FRAME (1, frame); |
b1b942b7 | 209 | SCM_VALIDATE_UINT_COPY (2, index, i); |
b1b942b7 | 210 | |
b636cdb0 | 211 | fp = SCM_VM_FRAME_FP (frame); |
6c6a4439 | 212 | sp = SCM_VM_FRAME_SP (frame); |
f8085163 | 213 | |
b636cdb0 | 214 | if (i < SCM_FRAME_NUM_LOCALS (fp, sp)) |
6c6a4439 | 215 | { |
b636cdb0 | 216 | SCM_FRAME_LOCAL (fp, i) = val; |
f8085163 | 217 | return SCM_UNSPECIFIED; |
6c6a4439 | 218 | } |
f8085163 | 219 | |
6c6a4439 AW |
220 | SCM_OUT_OF_RANGE (SCM_ARG2, index); |
221 | } | |
222 | #undef FUNC_NAME | |
b1b942b7 | 223 | |
2e30f398 AW |
224 | SCM_DEFINE (scm_frame_address, "frame-address", 1, 0, 0, |
225 | (SCM frame), | |
226 | "Return the frame pointer for @var{frame}.") | |
227 | #define FUNC_NAME s_scm_frame_address | |
228 | { | |
229 | SCM_VALIDATE_VM_FRAME (1, frame); | |
72b82b0f | 230 | return scm_from_uintptr_t ((scm_t_uintptr) SCM_VM_FRAME_FP (frame)); |
2e30f398 AW |
231 | } |
232 | #undef FUNC_NAME | |
233 | ||
542f975e AW |
234 | SCM_DEFINE (scm_frame_stack_pointer, "frame-stack-pointer", 1, 0, 0, |
235 | (SCM frame), | |
236 | "") | |
237 | #define FUNC_NAME s_scm_frame_stack_pointer | |
238 | { | |
239 | SCM_VALIDATE_VM_FRAME (1, frame); | |
240 | ||
72b82b0f | 241 | return scm_from_uintptr_t ((scm_t_uintptr) SCM_VM_FRAME_SP (frame)); |
542f975e AW |
242 | } |
243 | #undef FUNC_NAME | |
244 | ||
aa3f6951 | 245 | SCM_DEFINE (scm_frame_instruction_pointer, "frame-instruction-pointer", 1, 0, 0, |
6c6a4439 AW |
246 | (SCM frame), |
247 | "") | |
aa3f6951 | 248 | #define FUNC_NAME s_scm_frame_instruction_pointer |
6c6a4439 AW |
249 | { |
250 | SCM_VALIDATE_VM_FRAME (1, frame); | |
67b699cc | 251 | |
581a4eb8 | 252 | return scm_from_uintptr_t ((scm_t_uintptr) SCM_VM_FRAME_IP (frame)); |
ac99cb0c KN |
253 | } |
254 | #undef FUNC_NAME | |
255 | ||
aa3f6951 | 256 | SCM_DEFINE (scm_frame_return_address, "frame-return-address", 1, 0, 0, |
ac99cb0c KN |
257 | (SCM frame), |
258 | "") | |
aa3f6951 | 259 | #define FUNC_NAME s_scm_frame_return_address |
ac99cb0c | 260 | { |
b1b942b7 | 261 | SCM_VALIDATE_VM_FRAME (1, frame); |
72b82b0f AW |
262 | return scm_from_uintptr_t ((scm_t_uintptr) (SCM_FRAME_RETURN_ADDRESS |
263 | (SCM_VM_FRAME_FP (frame)))); | |
ac99cb0c KN |
264 | } |
265 | #undef FUNC_NAME | |
266 | ||
aa3f6951 | 267 | SCM_DEFINE (scm_frame_dynamic_link, "frame-dynamic-link", 1, 0, 0, |
ac99cb0c KN |
268 | (SCM frame), |
269 | "") | |
aa3f6951 | 270 | #define FUNC_NAME s_scm_frame_dynamic_link |
ac99cb0c | 271 | { |
b1b942b7 AW |
272 | SCM_VALIDATE_VM_FRAME (1, frame); |
273 | /* fixme: munge fp if holder is a continuation */ | |
72b82b0f AW |
274 | return scm_from_uintptr_t |
275 | ((scm_t_uintptr) | |
b1b942b7 AW |
276 | RELOC (frame, |
277 | SCM_FRAME_DYNAMIC_LINK (SCM_VM_FRAME_FP (frame)))); | |
ac99cb0c KN |
278 | } |
279 | #undef FUNC_NAME | |
280 | ||
93dbc31b AW |
281 | SCM_DEFINE (scm_frame_previous, "frame-previous", 1, 0, 0, |
282 | (SCM frame), | |
283 | "") | |
284 | #define FUNC_NAME s_scm_frame_previous | |
b1b942b7 AW |
285 | { |
286 | SCM *this_fp, *new_fp, *new_sp; | |
da874e54 | 287 | SCM proc; |
93dbc31b AW |
288 | |
289 | SCM_VALIDATE_VM_FRAME (1, frame); | |
290 | ||
291 | again: | |
b1b942b7 AW |
292 | this_fp = SCM_VM_FRAME_FP (frame); |
293 | new_fp = SCM_FRAME_DYNAMIC_LINK (this_fp); | |
294 | if (new_fp) | |
da874e54 | 295 | { |
89b235af | 296 | SCM *stack_base = scm_i_frame_stack_base (frame); |
da874e54 | 297 | new_fp = RELOC (frame, new_fp); |
b636cdb0 | 298 | new_sp = SCM_FRAME_PREVIOUS_SP (this_fp); |
050a40db AW |
299 | frame = scm_c_make_frame (SCM_VM_FRAME_KIND (frame), |
300 | SCM_VM_FRAME_STACK_HOLDER (frame), | |
89b235af AW |
301 | new_fp - stack_base, new_sp - stack_base, |
302 | SCM_FRAME_RETURN_ADDRESS (this_fp)); | |
da874e54 AW |
303 | proc = scm_frame_procedure (frame); |
304 | ||
d798a895 | 305 | if (SCM_PROGRAM_P (proc) && SCM_PROGRAM_IS_BOOT (proc)) |
93dbc31b AW |
306 | goto again; |
307 | else | |
308 | return frame; | |
b1b942b7 AW |
309 | } |
310 | else | |
311 | return SCM_BOOL_F; | |
312 | } | |
93dbc31b | 313 | #undef FUNC_NAME |
b1b942b7 | 314 | |
ac99cb0c | 315 | \f |
07e56b27 AW |
316 | void |
317 | scm_init_frames (void) | |
318 | { | |
ac99cb0c | 319 | #ifndef SCM_MAGIC_SNARFER |
aeeff258 | 320 | #include "libguile/frames.x" |
ac99cb0c KN |
321 | #endif |
322 | } | |
323 | ||
324 | /* | |
325 | Local Variables: | |
326 | c-file-style: "gnu" | |
327 | End: | |
328 | */ |