* A saved SBCL system is a .core file; the code here helps us accept
* such a file as input.
*/
-
+
/*
* This software is part of the SBCL system. See the README file for
* more information.
*/
#include <stdio.h>
-#include <sys/types.h>
+#include <stdlib.h>
+#include <string.h>
#include <sys/file.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
#ifdef irix
#include <fcntl.h>
-#include <stdlib.h>
#endif
+#include "sbcl.h"
#include "os.h"
#include "runtime.h"
#include "globals.h"
#include "core.h"
#include "arch.h"
#include "interr.h"
-#include "sbcl.h"
+#include "thread.h"
+
+#include "validate.h"
+#include "gc-internal.h"
+
+unsigned char build_id[] =
+#include "../../output/build-id.tmp"
+;
+
+int
+open_binary(char *filename, int mode)
+{
+#ifdef LISP_FEATURE_WIN32
+ mode |= O_BINARY;
+#endif
+
+ return open(filename, mode);
+}
+
+/* Search 'filename' for an embedded core. An SBCL core has, at the
+ * end of the file, a trailer containing the size of the core (an
+ * os_vm_offset_t) and a final signature word (the lispobj
+ * CORE_MAGIC). If this trailer is found at the end of the file, the
+ * start of the core can be determined from the core size.
+ *
+ * If an embedded core is present, this returns the offset into the
+ * file to load the core from, or -1 if no core is present. */
+os_vm_offset_t
+search_for_embedded_core(char *filename)
+{
+ lispobj header;
+ os_vm_offset_t lispobj_size = sizeof(lispobj);
+ os_vm_offset_t trailer_size = lispobj_size + sizeof(os_vm_offset_t);
+ os_vm_offset_t core_size, pos;
+ int fd = -1;
+
+ if ((fd = open_binary(filename, O_RDONLY)) < 0)
+ goto lose;
+ if (lseek(fd, -lispobj_size, SEEK_END) < 0)
+ goto lose;
+ if (read(fd, &header, (size_t)lispobj_size) < lispobj_size)
+ goto lose;
+
+ if (header == CORE_MAGIC) {
+ if (lseek(fd, -trailer_size, SEEK_END) < 0)
+ goto lose;
+ if (read(fd, &core_size, sizeof(os_vm_offset_t)) < 0)
+ goto lose;
+
+ if (lseek(fd, -(core_size + trailer_size), SEEK_END) < 0)
+ goto lose;
+ pos = lseek(fd, 0, SEEK_CUR);
+
+ if (read(fd, &header, (size_t)lispobj_size) < lispobj_size)
+ goto lose;
-static void process_directory(int fd, long *ptr, int count)
+ if (header != CORE_MAGIC)
+ goto lose;
+
+ close(fd);
+ return pos;
+ }
+
+lose:
+ if (fd != -1)
+ close(fd);
+
+ return -1;
+}
+
+static void
+process_directory(int fd, u32 *ptr, int count, os_vm_offset_t file_offset)
{
struct ndir_entry *entry;
- FSHOW((stderr, "process_directory(..), count=%d\n", count));
-
+ FSHOW((stderr, "/process_directory(..), count=%d\n", count));
+
for (entry = (struct ndir_entry *) ptr; --count>= 0; ++entry) {
- long id = entry->identifier;
- long offset = os_vm_page_size * (1 + entry->data_page);
- os_vm_address_t addr =
- (os_vm_address_t) (os_vm_page_size * entry->address);
- lispobj *free_pointer = (lispobj *) addr + entry->nwords;
- long len = os_vm_page_size * entry->page_count;
-
- if (len != 0) {
- os_vm_address_t real_addr;
- FSHOW((stderr, "mapping %ld bytes at 0x%lx\n", len, addr));
- real_addr = os_map(fd, offset, addr, len);
- if (real_addr != addr) {
- lose("file mapped in wrong place! "
- "(0x%08x != 0x%08lx)",
- real_addr,
- addr);
- }
- }
-
- FSHOW((stderr, "space id = %d, free pointer = 0x%08x\n",
- id, free_pointer));
-
- switch (id) {
- case DYNAMIC_SPACE_ID:
-#ifdef GENCGC
- if (addr != (os_vm_address_t)DYNAMIC_SPACE_START) {
- fprintf(stderr, "in core: 0x%x - in runtime: 0x%x \n",
- addr, (os_vm_address_t)DYNAMIC_SPACE_START);
- fprintf(stderr,"warning: core/runtime address mismatch: DYNAMIC_SPACE_START");
- }
+ long id = entry->identifier;
+ long offset = os_vm_page_size * (1 + entry->data_page);
+ os_vm_address_t addr =
+ (os_vm_address_t) (os_vm_page_size * entry->address);
+ lispobj *free_pointer = (lispobj *) addr + entry->nwords;
+ long len = os_vm_page_size * entry->page_count;
+
+ if (len != 0) {
+ os_vm_address_t real_addr;
+ FSHOW((stderr, "/mapping %ld(0x%lx) bytes at 0x%lx\n",
+ (long)len, (long)len, (unsigned long)addr));
+ real_addr = os_map(fd, offset + file_offset, addr, len);
+ if (real_addr != addr) {
+ lose("file mapped in wrong place! "
+ "(0x%08x != 0x%08lx)\n",
+ real_addr,
+ addr);
+ }
+ }
+
+ FSHOW((stderr, "/space id = %ld, free pointer = 0x%lx\n",
+ id, (unsigned long)free_pointer));
+
+ switch (id) {
+ case DYNAMIC_CORE_SPACE_ID:
+#ifdef LISP_FEATURE_GENCGC
+ if (addr != (os_vm_address_t)DYNAMIC_SPACE_START) {
+ fprintf(stderr, "in core: 0x%lx; in runtime: 0x%lx \n",
+ (long)addr, (long)DYNAMIC_SPACE_START);
+ lose("core/runtime address mismatch: DYNAMIC_SPACE_START\n");
+ }
#else
- if ((addr != (os_vm_address_t)DYNAMIC_0_SPACE_START) &&
- (addr != (os_vm_address_t)DYNAMIC_1_SPACE_START)) {
- fprintf(stderr, "in core: 0x%x - in runtime: 0x%x or 0x%x\n",
- addr, (os_vm_address_t)DYNAMIC_0_SPACE_START,
- (os_vm_address_t)DYNAMIC_1_SPACE_START);
- fprintf(stderr,"warning: core/runtime address mismatch: DYNAMIC_SPACE_START");
- }
+ if ((addr != (os_vm_address_t)DYNAMIC_0_SPACE_START) &&
+ (addr != (os_vm_address_t)DYNAMIC_1_SPACE_START)) {
+ fprintf(stderr, "in core: 0x%lx; in runtime: 0x%lx or 0x%lx\n",
+ (long)addr,
+ (long)DYNAMIC_0_SPACE_START,
+ (long)DYNAMIC_1_SPACE_START);
+ lose("warning: core/runtime address mismatch: DYNAMIC_SPACE_START\n");
+ }
#endif
-#if defined(ibmrt) || defined(__i386__)
- SetSymbolValue(ALLOCATION_POINTER, (lispobj)free_pointer);
+#if defined(ALLOCATION_POINTER)
+ SetSymbolValue(ALLOCATION_POINTER, (lispobj)free_pointer,0);
#else
- dynamic_space_free_pointer = free_pointer;
+ dynamic_space_free_pointer = free_pointer;
#endif
- /* on the x86, this will always be space 0 */
- current_dynamic_space = (lispobj *)addr;
- break;
- case STATIC_SPACE_ID:
- if (addr != (os_vm_address_t)STATIC_SPACE_START) {
- fprintf(stderr, "in core: 0x%p - in runtime: 0x%x\n",
- addr, (os_vm_address_t)STATIC_SPACE_START);
- lose("core/runtime address mismatch: STATIC_SPACE_START");
- }
- break;
- case READ_ONLY_SPACE_ID:
- if (addr != (os_vm_address_t)READ_ONLY_SPACE_START) {
- fprintf(stderr, "in core: 0x%x - in runtime: 0x%x\n",
- addr, (os_vm_address_t)READ_ONLY_SPACE_START);
- lose("core/runtime address mismatch: READ_ONLY_SPACE_START");
- }
- break;
- default:
- lose("unknown space ID %ld addr 0x%p", id);
- }
+ /* For stop-and-copy GC, this will be whatever the GC was
+ * using at the time. With GENCGC, this will always be
+ * space 0. (We checked above that for GENCGC,
+ * addr==DYNAMIC_SPACE_START.) */
+ current_dynamic_space = (lispobj *)addr;
+ break;
+ case STATIC_CORE_SPACE_ID:
+ if (addr != (os_vm_address_t)STATIC_SPACE_START) {
+ fprintf(stderr, "in core: 0x%lx - in runtime: 0x%lx\n",
+ (long)addr, (long)STATIC_SPACE_START);
+ lose("core/runtime address mismatch: STATIC_SPACE_START\n");
+ }
+ break;
+ case READ_ONLY_CORE_SPACE_ID:
+ if (addr != (os_vm_address_t)READ_ONLY_SPACE_START) {
+ fprintf(stderr, "in core: 0x%lx - in runtime: 0x%lx\n",
+ (long)addr, (long)READ_ONLY_SPACE_START);
+ lose("core/runtime address mismatch: READ_ONLY_SPACE_START\n");
+ }
+ break;
+ default:
+ lose("unknown space ID %ld addr 0x%lx\n", id, (long)addr);
+ }
}
}
-lispobj load_core_file(char *file)
+lispobj
+load_core_file(char *file, os_vm_offset_t file_offset)
{
- int fd = open(file, O_RDONLY), count;
-
- /* KLUDGE: This kind of conditionalization everywhere that 32-bit
- * ints are used is really nasty. It would be much nicer to define
- * a typedef like addr_as_int once and for all in each
- * architecture file, then use that everywhere. -- WHN 19990904 */
-#ifndef alpha
- long *header, val, len, *ptr;
- long remaining_len;
-#else
- u32 *header, val, len, *ptr;
- u32 remaining_len;
-#endif
+ lispobj *header, val, len, *ptr, remaining_len;
+ int fd = open_binary(file, O_RDONLY), count;
lispobj initial_function = NIL;
+ FSHOW((stderr, "/entering load_core_file(%s)\n", file));
if (fd < 0) {
- fprintf(stderr, "could not open file \"%s\"\n", file);
- perror("open");
- exit(1);
+ fprintf(stderr, "could not open file \"%s\"\n", file);
+ perror("open");
+ exit(1);
}
- header=calloc(os_vm_page_size / sizeof(u32),sizeof(u32));
+ lseek(fd, file_offset, SEEK_SET);
+ header = calloc(os_vm_page_size / sizeof(u32), sizeof(u32));
count = read(fd, header, os_vm_page_size);
if (count < os_vm_page_size) {
- lose("premature end of core file");
+ lose("premature end of core file\n");
}
+ SHOW("successfully read first page of core");
ptr = header;
val = *ptr++;
if (val != CORE_MAGIC) {
- lose("invalid magic number in core: 0x%lx should have been 0x%x.",
- val,
- CORE_MAGIC);
+ lose("invalid magic number in core: 0x%lx should have been 0x%x.\n",
+ val,
+ CORE_MAGIC);
}
+ SHOW("found CORE_MAGIC");
+
+ while (val != END_CORE_ENTRY_TYPE_CODE) {
+ val = *ptr++;
+ len = *ptr++;
+ remaining_len = len - 2; /* (-2 to cancel the two ++ operations) */
+ FSHOW((stderr, "/val=0x%ld, remaining_len=0x%ld\n",
+ (long)val, (long)remaining_len));
+
+ switch (val) {
+
+ case END_CORE_ENTRY_TYPE_CODE:
+ SHOW("END_CORE_ENTRY_TYPE_CODE case");
+ break;
+
+ case VERSION_CORE_ENTRY_TYPE_CODE:
+ SHOW("VERSION_CORE_ENTRY_TYPE_CODE case");
+ if (*ptr != SBCL_CORE_VERSION_INTEGER) {
+ lose("core file version (%d) != runtime library version (%d)\n",
+ *ptr,
+ SBCL_CORE_VERSION_INTEGER);
+ }
+ break;
+
+ case BUILD_ID_CORE_ENTRY_TYPE_CODE:
+ SHOW("BUILD_ID_CORE_ENTRY_TYPE_CODE case");
+ {
+ int i;
- while (val != CORE_END) {
- val = *ptr++;
- len = *ptr++;
- remaining_len = len - 2; /* (-2 to cancel the two ++ operations) */
-
- switch (val) {
-
- case CORE_END:
- break;
-
- case CORE_VERSION:
- if (*ptr != SBCL_CORE_VERSION_INTEGER) {
- lose("core file version (%d) != runtime library version (%d)",
- *ptr,
- SBCL_CORE_VERSION_INTEGER);
- }
- break;
-
- case CORE_NDIRECTORY:
- process_directory(fd,
- ptr,
-#ifndef alpha
- remaining_len / (sizeof(struct ndir_entry) /
- sizeof(long))
+ FSHOW((stderr, "build_id[]=\"%s\"\n", build_id));
+ FSHOW((stderr, "remaining_len = %d\n", remaining_len));
+ if (remaining_len != strlen((const char *)build_id))
+ goto losing_build_id;
+ for (i = 0; i < remaining_len; ++i) {
+ FSHOW((stderr, "ptr[%d] = char = %d, expected=%d\n",
+ i, ptr[i], build_id[i]));
+ if (ptr[i] != build_id[i])
+ goto losing_build_id;
+ }
+ break;
+ losing_build_id:
+ /* .core files are not binary-compatible between
+ * builds because we can't easily detect whether the
+ * sources were patched between the time the
+ * dumping-the-.core runtime was built and the time
+ * that the loading-the-.core runtime was built.
+ *
+ * (We could easily detect whether version.lisp-expr
+ * was changed, but people experimenting with patches
+ * don't necessarily update version.lisp-expr.) */
+
+ lose("can't load .core for different runtime, sorry\n");
+ }
+
+ case NEW_DIRECTORY_CORE_ENTRY_TYPE_CODE:
+ SHOW("NEW_DIRECTORY_CORE_ENTRY_TYPE_CODE case");
+ process_directory(fd,
+ ptr,
+#ifndef LISP_FEATURE_ALPHA
+ remaining_len / (sizeof(struct ndir_entry) /
+ sizeof(long)),
#else
- remaining_len / (sizeof(struct ndir_entry) /
- sizeof(u32))
+ remaining_len / (sizeof(struct ndir_entry) /
+ sizeof(u32)),
#endif
- );
- break;
+ file_offset);
+ break;
- case CORE_INITIAL_FUNCTION:
- initial_function = (lispobj)*ptr;
- break;
+ case INITIAL_FUN_CORE_ENTRY_TYPE_CODE:
+ SHOW("INITIAL_FUN_CORE_ENTRY_TYPE_CODE case");
+ initial_function = (lispobj)*ptr;
+ break;
- default:
- lose("unknown core file entry: %ld", val);
- }
+#ifdef LISP_FEATURE_GENCGC
+ case PAGE_TABLE_CORE_ENTRY_TYPE_CODE:
+ {
+ size_t size = *ptr;
+ size_t fdoffset = (*(ptr+1) + 1) * (os_vm_page_size);
+ size_t offset = 0;
+ long bytes_read;
+ long data[4096];
+ lseek(fd, fdoffset + file_offset, SEEK_SET);
+ while ((bytes_read = read(fd, data, (size < 4096 ? size : 4096 )))
+ > 0)
+ {
+ int i = 0;
+ size -= bytes_read;
+ while (bytes_read) {
+ bytes_read -= sizeof(long);
+ page_table[offset++].first_object_offset = data[i++];
+ }
+ }
- ptr += remaining_len;
+ gencgc_partial_pickup = 1;
+ break;
+ }
+#endif
+ default:
+ lose("unknown core file entry: %ld\n", (long)val);
+ }
+
+ ptr += remaining_len;
+ FSHOW((stderr, "/new ptr=%lx\n", (unsigned long)ptr));
}
+ SHOW("about to free(header)");
free(header);
+ SHOW("returning from load_core_file(..)");
return initial_function;
}
+
projects / sbcl.git / blobdiff