2 * A saved SBCL system is a .core file; the code here helps us accept
3 * such a file as input.
7 * This software is part of the SBCL system. See the README file for
10 * This software is derived from the CMU CL system, which was
11 * written at Carnegie Mellon University and released into the
12 * public domain. The software is in the public domain and is
13 * provided with absolutely no warranty. See the COPYING and CREDITS
14 * files for more information.
21 #include <sys/types.h>
40 #include "gc-internal.h"
42 unsigned char build_id
[] =
43 #include "../../output/build-id.tmp"
47 process_directory(int fd
, u32
*ptr
, int count
)
49 struct ndir_entry
*entry
;
51 FSHOW((stderr
, "/process_directory(..), count=%d\n", count
));
53 for (entry
= (struct ndir_entry
*) ptr
; --count
>= 0; ++entry
) {
55 long id
= entry
->identifier
;
56 long offset
= os_vm_page_size
* (1 + entry
->data_page
);
57 os_vm_address_t addr
=
58 (os_vm_address_t
) (os_vm_page_size
* entry
->address
);
59 lispobj
*free_pointer
= (lispobj
*) addr
+ entry
->nwords
;
60 long len
= os_vm_page_size
* entry
->page_count
;
63 os_vm_address_t real_addr
;
64 FSHOW((stderr
, "/mapping %ld(0x%lx) bytes at 0x%lx\n",
65 (long)len
, (long)len
, (unsigned long)addr
));
66 real_addr
= os_map(fd
, offset
, addr
, len
);
67 if (real_addr
!= addr
) {
68 lose("file mapped in wrong place! "
69 "(0x%08x != 0x%08lx)",
75 FSHOW((stderr
, "/space id = %ld, free pointer = 0x%lx\n",
76 id
, (unsigned long)free_pointer
));
79 case DYNAMIC_CORE_SPACE_ID
:
80 #ifdef LISP_FEATURE_GENCGC
81 if (addr
!= (os_vm_address_t
)DYNAMIC_SPACE_START
) {
82 fprintf(stderr
, "in core: 0x%lx; in runtime: 0x%lx \n",
83 (long)addr
, (long)DYNAMIC_SPACE_START
);
84 lose("core/runtime address mismatch: DYNAMIC_SPACE_START");
87 if ((addr
!= (os_vm_address_t
)DYNAMIC_0_SPACE_START
) &&
88 (addr
!= (os_vm_address_t
)DYNAMIC_1_SPACE_START
)) {
89 fprintf(stderr
, "in core: 0x%lx; in runtime: 0x%lx or 0x%lx\n",
91 (long)DYNAMIC_0_SPACE_START
,
92 (long)DYNAMIC_1_SPACE_START
);
93 lose("warning: core/runtime address mismatch: DYNAMIC_SPACE_START");
96 #if defined(ALLOCATION_POINTER)
97 SetSymbolValue(ALLOCATION_POINTER
, (lispobj
)free_pointer
,0);
99 dynamic_space_free_pointer
= free_pointer
;
101 /* For stop-and-copy GC, this will be whatever the GC was
102 * using at the time. With GENCGC, this will always be
103 * space 0. (We checked above that for GENCGC,
104 * addr==DYNAMIC_SPACE_START.) */
105 current_dynamic_space
= (lispobj
*)addr
;
107 case STATIC_CORE_SPACE_ID
:
108 if (addr
!= (os_vm_address_t
)STATIC_SPACE_START
) {
109 fprintf(stderr
, "in core: 0x%lx - in runtime: 0x%lx\n",
110 (long)addr
, (long)STATIC_SPACE_START
);
111 lose("core/runtime address mismatch: STATIC_SPACE_START");
114 case READ_ONLY_CORE_SPACE_ID
:
115 if (addr
!= (os_vm_address_t
)READ_ONLY_SPACE_START
) {
116 fprintf(stderr
, "in core: 0x%lx - in runtime: 0x%lx\n",
117 (long)addr
, (long)READ_ONLY_SPACE_START
);
118 lose("core/runtime address mismatch: READ_ONLY_SPACE_START");
122 lose("unknown space ID %ld addr 0x%p", id
);
128 load_core_file(char *file
)
130 lispobj
*header
, val
, len
, *ptr
, remaining_len
;
131 int fd
= open(file
, O_RDONLY
), count
;
133 lispobj initial_function
= NIL
;
134 FSHOW((stderr
, "/entering load_core_file(%s)\n", file
));
136 fprintf(stderr
, "could not open file \"%s\"\n", file
);
141 header
= calloc(os_vm_page_size
/ sizeof(u32
), sizeof(u32
));
143 count
= read(fd
, header
, os_vm_page_size
);
144 if (count
< os_vm_page_size
) {
145 lose("premature end of core file");
147 SHOW("successfully read first page of core");
152 if (val
!= CORE_MAGIC
) {
153 lose("invalid magic number in core: 0x%lx should have been 0x%x.",
157 SHOW("found CORE_MAGIC");
159 while (val
!= END_CORE_ENTRY_TYPE_CODE
) {
162 remaining_len
= len
- 2; /* (-2 to cancel the two ++ operations) */
163 FSHOW((stderr
, "/val=0x%ld, remaining_len=0x%ld\n",
164 (long)val
, (long)remaining_len
));
168 case END_CORE_ENTRY_TYPE_CODE
:
169 SHOW("END_CORE_ENTRY_TYPE_CODE case");
172 case VERSION_CORE_ENTRY_TYPE_CODE
:
173 SHOW("VERSION_CORE_ENTRY_TYPE_CODE case");
174 if (*ptr
!= SBCL_CORE_VERSION_INTEGER
) {
175 lose("core file version (%d) != runtime library version (%d)",
177 SBCL_CORE_VERSION_INTEGER
);
181 case BUILD_ID_CORE_ENTRY_TYPE_CODE
:
182 SHOW("BUILD_ID_CORE_ENTRY_TYPE_CODE case");
186 FSHOW((stderr
, "build_id[]=\"%s\"\n", build_id
));
187 FSHOW((stderr
, "remaining_len = %d\n", remaining_len
));
188 if (remaining_len
!= strlen((const char *)build_id
))
189 goto losing_build_id
;
190 for (i
= 0; i
< remaining_len
; ++i
) {
191 FSHOW((stderr
, "ptr[%d] = char = %d, expected=%d\n",
192 i
, ptr
[i
], build_id
[i
]));
193 if (ptr
[i
] != build_id
[i
])
194 goto losing_build_id
;
198 /* .core files are not binary-compatible between
199 * builds because we can't easily detect whether the
200 * sources were patched between the time the
201 * dumping-the-.core runtime was built and the time
202 * that the loading-the-.core runtime was built.
204 * (We could easily detect whether version.lisp-expr
205 * was changed, but people experimenting with patches
206 * don't necessarily update version.lisp-expr.) */
208 lose("can't load .core for different runtime, sorry");
211 case NEW_DIRECTORY_CORE_ENTRY_TYPE_CODE
:
212 SHOW("NEW_DIRECTORY_CORE_ENTRY_TYPE_CODE case");
213 process_directory(fd
,
215 #ifndef LISP_FEATURE_ALPHA
216 remaining_len
/ (sizeof(struct ndir_entry
) /
219 remaining_len
/ (sizeof(struct ndir_entry
) /
225 case INITIAL_FUN_CORE_ENTRY_TYPE_CODE
:
226 SHOW("INITIAL_FUN_CORE_ENTRY_TYPE_CODE case");
227 initial_function
= (lispobj
)*ptr
;
230 #ifdef LISP_FEATURE_GENCGC
231 case PAGE_TABLE_CORE_ENTRY_TYPE_CODE
:
234 size_t fdoffset
= (*(ptr
+1) + 1) * (os_vm_page_size
);
238 lseek(fd
, fdoffset
, SEEK_SET
);
239 while ((bytes_read
= read(fd
, data
, (size
< 4096 ? size
: 4096 )))
245 bytes_read
-= sizeof(long);
246 page_table
[offset
++].first_object_offset
= data
[i
++];
250 gencgc_partial_pickup
= 1;
255 lose("unknown core file entry: %ld", (long)val
);
258 ptr
+= remaining_len
;
259 FSHOW((stderr
, "/new ptr=%lx\n", (unsigned long)ptr
));
261 SHOW("about to free(header)");
263 SHOW("returning from load_core_file(..)");
264 return initial_function
;