0.8.2.35
[sbcl.git] / src / runtime / coreparse.c
index ffcce84..65fdc12 100644 (file)
  */
 
 #include <stdio.h>
-#include <sys/types.h>
+#include <stdlib.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 "os.h"
 #include "arch.h"
 #include "interr.h"
 #include "sbcl.h"
+#include "thread.h"
 
-static void process_directory(int fd, long *ptr, int count)
+unsigned char build_id[] =
+#include "../../output/build-id.tmp"
+;
+
+static void
+process_directory(int fd, u32 *ptr, int count)
 {
     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) {
 
@@ -48,7 +57,8 @@ static void process_directory(int fd, long *ptr, int count)
        
        if (len != 0) {
            os_vm_address_t real_addr;
-           FSHOW((stderr, "mapping %ld bytes at 0x%lx\n", len, addr));
+           FSHOW((stderr, "/mapping %ld(0x%lx) bytes at 0x%lx\n",
+                  (long)len, (long)len, addr));
            real_addr = os_map(fd, offset, addr, len);
            if (real_addr != addr) {
                lose("file mapped in wrong place! "
@@ -58,45 +68,52 @@ static void process_directory(int fd, long *ptr, int count)
            }
        }
 
-       FSHOW((stderr, "space id = %d, free pointer = 0x%08x\n",
-              id, free_pointer));
+       FSHOW((stderr, "/space id = %d, free pointer = 0x%08x\n",
+              id, (long)free_pointer));
 
        switch (id) {
-       case DYNAMIC_SPACE_ID:
-#ifdef GENCGC    
+       case DYNAMIC_CORE_SPACE_ID:
+#ifdef LISP_FEATURE_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");
+               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");
            }
 #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");
+               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");
            }
 #endif
-#if defined(ibmrt) || defined(__i386__)
-           SetSymbolValue(ALLOCATION_POINTER, (lispobj)free_pointer);
+/* FIXME: Should the conditional here be reg_ALLOC instead of
+ *   defined(__i386__)
+ * ? */
+#if defined(LISP_FEATURE_X86)
+           SetSymbolValue(ALLOCATION_POINTER, (lispobj)free_pointer,0);
 #else
            dynamic_space_free_pointer = free_pointer;
 #endif
-           /* on the x86, this will always be space 0 */
+           /* 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_SPACE_ID:
+       case STATIC_CORE_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);
+               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");
            }
            break;
-       case READ_ONLY_SPACE_ID:
+       case READ_ONLY_CORE_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);
+               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");
            }
            break;
@@ -106,35 +123,27 @@ static void process_directory(int fd, long *ptr, int count)
     }
 }
 
-lispobj load_core_file(char *file)
+lispobj
+load_core_file(char *file)
 {
+    u32 *header, val, len, *ptr, remaining_len;
     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 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);
     }
 
-    header=calloc(os_vm_page_size / sizeof(u32),sizeof(u32));
+    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");
     }
+    SHOW("successfully read first page of core");
 
     ptr = header;
     val = *ptr++;
@@ -144,18 +153,23 @@ lispobj load_core_file(char *file)
             val,
             CORE_MAGIC);
     }
+    SHOW("found CORE_MAGIC");
 
-    while (val != CORE_END) {
+    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 CORE_END:
+       case END_CORE_ENTRY_TYPE_CODE:
+           SHOW("END_CORE_ENTRY_TYPE_CODE case");
            break;
 
-       case CORE_VERSION:
+       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)",
                     *ptr,
@@ -163,7 +177,38 @@ lispobj load_core_file(char *file)
            }
            break;
 
-       case CORE_NDIRECTORY:
+       case BUILD_ID_CORE_ENTRY_TYPE_CODE:
+           SHOW("BUILD_ID_CORE_ENTRY_TYPE_CODE case");
+           {
+               int i;
+
+               FSHOW((stderr, "build_id[]=\"%s\"\n", build_id));
+               FSHOW((stderr, "remaining_len = %d\n", remaining_len));
+               if (remaining_len != strlen(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");
+           } 
+
+       case NEW_DIRECTORY_CORE_ENTRY_TYPE_CODE:
+           SHOW("NEW_DIRECTORY_CORE_ENTRY_TYPE_CODE case");
            process_directory(fd,
                              ptr,
 #ifndef alpha
@@ -176,16 +221,20 @@ lispobj load_core_file(char *file)
                              );
            break;
 
-       case CORE_INITIAL_FUNCTION:
+       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);
+           lose("unknown core file entry: %ld", (long)val);
        }
 
        ptr += remaining_len;
+       FSHOW((stderr, "/new ptr=%x\n", ptr));
     }
+    SHOW("about to free(header)");
     free(header);
+    SHOW("returning from load_core_file(..)");
     return initial_function;
 }