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>
39 unsigned char build_id
[] =
40 #include "../../output/build-id.tmp"
44 process_directory(int fd
, u32
*ptr
, int count
)
46 struct ndir_entry
*entry
;
48 FSHOW((stderr
, "/process_directory(..), count=%d\n", count
));
50 for (entry
= (struct ndir_entry
*) ptr
; --count
>= 0; ++entry
) {
52 long id
= entry
->identifier
;
53 long offset
= os_vm_page_size
* (1 + entry
->data_page
);
54 os_vm_address_t addr
=
55 (os_vm_address_t
) (os_vm_page_size
* entry
->address
);
56 lispobj
*free_pointer
= (lispobj
*) addr
+ entry
->nwords
;
57 long len
= os_vm_page_size
* entry
->page_count
;
60 os_vm_address_t real_addr
;
61 FSHOW((stderr
, "/mapping %ld(0x%lx) bytes at 0x%lx\n",
62 (long)len
, (long)len
, addr
));
63 real_addr
= os_map(fd
, offset
, addr
, len
);
64 if (real_addr
!= addr
) {
65 lose("file mapped in wrong place! "
66 "(0x%08x != 0x%08lx)",
72 FSHOW((stderr
, "/space id = %d, free pointer = 0x%08x\n",
73 id
, (long)free_pointer
));
76 case DYNAMIC_CORE_SPACE_ID
:
77 #ifdef LISP_FEATURE_GENCGC
78 if (addr
!= (os_vm_address_t
)DYNAMIC_SPACE_START
) {
79 fprintf(stderr
, "in core: 0x%lx; in runtime: 0x%lx \n",
80 (long)addr
, (long)DYNAMIC_SPACE_START
);
81 lose("core/runtime address mismatch: DYNAMIC_SPACE_START");
84 if ((addr
!= (os_vm_address_t
)DYNAMIC_0_SPACE_START
) &&
85 (addr
!= (os_vm_address_t
)DYNAMIC_1_SPACE_START
)) {
86 fprintf(stderr
, "in core: 0x%lx; in runtime: 0x%lx or 0x%lx\n",
88 (long)DYNAMIC_0_SPACE_START
,
89 (long)DYNAMIC_1_SPACE_START
);
90 lose("warning: core/runtime address mismatch: DYNAMIC_SPACE_START");
93 #if defined(ALLOCATION_POINTER)
94 SetSymbolValue(ALLOCATION_POINTER
, (lispobj
)free_pointer
,0);
96 dynamic_space_free_pointer
= free_pointer
;
98 /* For stop-and-copy GC, this will be whatever the GC was
99 * using at the time. With GENCGC, this will always be
100 * space 0. (We checked above that for GENCGC,
101 * addr==DYNAMIC_SPACE_START.) */
102 current_dynamic_space
= (lispobj
*)addr
;
104 case STATIC_CORE_SPACE_ID
:
105 if (addr
!= (os_vm_address_t
)STATIC_SPACE_START
) {
106 fprintf(stderr
, "in core: 0x%lx - in runtime: 0x%lx\n",
107 (long)addr
, (long)STATIC_SPACE_START
);
108 lose("core/runtime address mismatch: STATIC_SPACE_START");
111 case READ_ONLY_CORE_SPACE_ID
:
112 if (addr
!= (os_vm_address_t
)READ_ONLY_SPACE_START
) {
113 fprintf(stderr
, "in core: 0x%lx - in runtime: 0x%lx\n",
114 (long)addr
, (long)READ_ONLY_SPACE_START
);
115 lose("core/runtime address mismatch: READ_ONLY_SPACE_START");
119 lose("unknown space ID %ld addr 0x%p", id
);
125 load_core_file(char *file
)
127 lispobj
*header
, val
, len
, *ptr
, remaining_len
;
128 int fd
= open(file
, O_RDONLY
), count
;
130 lispobj initial_function
= NIL
;
131 FSHOW((stderr
, "/entering load_core_file(%s)\n", file
));
133 fprintf(stderr
, "could not open file \"%s\"\n", file
);
138 header
= calloc(os_vm_page_size
/ sizeof(u32
), sizeof(u32
));
140 count
= read(fd
, header
, os_vm_page_size
);
141 if (count
< os_vm_page_size
) {
142 lose("premature end of core file");
144 SHOW("successfully read first page of core");
149 if (val
!= CORE_MAGIC
) {
150 lose("invalid magic number in core: 0x%lx should have been 0x%x.",
154 SHOW("found CORE_MAGIC");
156 while (val
!= END_CORE_ENTRY_TYPE_CODE
) {
159 remaining_len
= len
- 2; /* (-2 to cancel the two ++ operations) */
160 FSHOW((stderr
, "/val=0x%ld, remaining_len=0x%ld\n",
161 (long)val
, (long)remaining_len
));
165 case END_CORE_ENTRY_TYPE_CODE
:
166 SHOW("END_CORE_ENTRY_TYPE_CODE case");
169 case VERSION_CORE_ENTRY_TYPE_CODE
:
170 SHOW("VERSION_CORE_ENTRY_TYPE_CODE case");
171 if (*ptr
!= SBCL_CORE_VERSION_INTEGER
) {
172 lose("core file version (%d) != runtime library version (%d)",
174 SBCL_CORE_VERSION_INTEGER
);
178 case BUILD_ID_CORE_ENTRY_TYPE_CODE
:
179 SHOW("BUILD_ID_CORE_ENTRY_TYPE_CODE case");
183 FSHOW((stderr
, "build_id[]=\"%s\"\n", build_id
));
184 FSHOW((stderr
, "remaining_len = %d\n", remaining_len
));
185 if (remaining_len
!= strlen(build_id
))
186 goto losing_build_id
;
187 for (i
= 0; i
< remaining_len
; ++i
) {
188 FSHOW((stderr
, "ptr[%d] = char = %d, expected=%d\n",
189 i
, ptr
[i
], build_id
[i
]));
190 if (ptr
[i
] != build_id
[i
])
191 goto losing_build_id
;
195 /* .core files are not binary-compatible between
196 * builds because we can't easily detect whether the
197 * sources were patched between the time the
198 * dumping-the-.core runtime was built and the time
199 * that the loading-the-.core runtime was built.
201 * (We could easily detect whether version.lisp-expr
202 * was changed, but people experimenting with patches
203 * don't necessarily update version.lisp-expr.) */
205 lose("can't load .core for different runtime, sorry");
208 case NEW_DIRECTORY_CORE_ENTRY_TYPE_CODE
:
209 SHOW("NEW_DIRECTORY_CORE_ENTRY_TYPE_CODE case");
210 process_directory(fd
,
212 #ifndef LISP_FEATURE_ALPHA
213 remaining_len
/ (sizeof(struct ndir_entry
) /
216 remaining_len
/ (sizeof(struct ndir_entry
) /
222 case INITIAL_FUN_CORE_ENTRY_TYPE_CODE
:
223 SHOW("INITIAL_FUN_CORE_ENTRY_TYPE_CODE case");
224 initial_function
= (lispobj
)*ptr
;
228 lose("unknown core file entry: %ld", (long)val
);
231 ptr
+= remaining_len
;
232 FSHOW((stderr
, "/new ptr=%x\n", ptr
));
234 SHOW("about to free(header)");
236 SHOW("returning from load_core_file(..)");
237 return initial_function
;