--- /dev/null
+/* Portable data dumper for XEmacs.
+ Copyright (C) 1999-2000 Olivier Galibert
+ Copyright (C) 2001 Martin Buchholz
+
+This file is part of XEmacs.
+
+XEmacs is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the
+Free Software Foundation; either version 2, or (at your option) any
+later version.
+
+XEmacs is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with XEmacs; see the file COPYING. If not, write to
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
+
+/* Synched up with: Not in FSF. */
+
+#include <config.h>
+#include "lisp.h"
+
+#include "specifier.h"
+#include "elhash.h"
+#include "sysfile.h"
+#include "console-stream.h"
+#include "dumper.h"
+#include "sysdep.h"
+
+#ifdef WIN32_NATIVE
+#include "nt.h"
+#else
+#ifdef HAVE_MMAP
+#include <sys/mman.h>
+#endif
+#endif
+
+#ifndef SEPCHAR
+#define SEPCHAR ':'
+#endif
+
+typedef struct
+{
+ void *varaddress;
+ size_t size;
+} pdump_opaque;
+
+typedef struct
+{
+ Dynarr_declare (pdump_opaque);
+} pdump_opaque_dynarr;
+
+typedef struct
+{
+ void **ptraddress;
+ const struct struct_description *desc;
+} pdump_root_struct_ptr;
+
+typedef struct
+{
+ Dynarr_declare (pdump_root_struct_ptr);
+} pdump_root_struct_ptr_dynarr;
+
+typedef struct
+{
+ Lisp_Object *address;
+ Lisp_Object value;
+} pdump_static_Lisp_Object;
+
+typedef struct
+{
+ char **address; /* char * for ease of doing relocation */
+ char * value;
+} pdump_static_pointer;
+
+static pdump_opaque_dynarr *pdump_opaques;
+static pdump_root_struct_ptr_dynarr *pdump_root_struct_ptrs;
+static Lisp_Object_ptr_dynarr *pdump_root_objects;
+static Lisp_Object_ptr_dynarr *pdump_weak_object_chains;
+
+/* Mark SIZE bytes at non-heap address VARADDRESS for dumping as is,
+ without any bit-twiddling. */
+void
+dump_add_opaque (void *varaddress, size_t size)
+{
+ pdump_opaque info;
+ info.varaddress = varaddress;
+ info.size = size;
+ if (pdump_opaques == NULL)
+ pdump_opaques = Dynarr_new (pdump_opaque);
+ Dynarr_add (pdump_opaques, info);
+}
+
+/* Mark the struct described by DESC and pointed to by the pointer at
+ non-heap address VARADDRESS for dumping.
+ All the objects reachable from this pointer will also be dumped. */
+void
+dump_add_root_struct_ptr (void *ptraddress, const struct struct_description *desc)
+{
+ pdump_root_struct_ptr info;
+ info.ptraddress = (void **) ptraddress;
+ info.desc = desc;
+ if (pdump_root_struct_ptrs == NULL)
+ pdump_root_struct_ptrs = Dynarr_new (pdump_root_struct_ptr);
+ Dynarr_add (pdump_root_struct_ptrs, info);
+}
+
+/* Mark the Lisp_Object at non-heap address VARADDRESS for dumping.
+ All the objects reachable from this var will also be dumped. */
+void
+dump_add_root_object (Lisp_Object *varaddress)
+{
+ if (pdump_root_objects == NULL)
+ pdump_root_objects = Dynarr_new2 (Lisp_Object_ptr_dynarr, Lisp_Object *);
+ Dynarr_add (pdump_root_objects, varaddress);
+}
+
+/* Mark the list pointed to by the Lisp_Object at VARADDRESS for dumping. */
+void
+dump_add_weak_object_chain (Lisp_Object *varaddress)
+{
+ if (pdump_weak_object_chains == NULL)
+ pdump_weak_object_chains = Dynarr_new2 (Lisp_Object_ptr_dynarr, Lisp_Object *);
+ Dynarr_add (pdump_weak_object_chains, varaddress);
+}
+\f
+
+inline static void
+pdump_align_stream (FILE *stream, size_t alignment)
+{
+ long offset = ftell (stream);
+ long adjustment = ALIGN_SIZE (offset, alignment) - offset;
+ if (adjustment)
+ fseek (stream, adjustment, SEEK_CUR);
+}
+
+#define PDUMP_ALIGN_OUTPUT(type) pdump_align_stream (pdump_out, ALIGNOF (type))
+
+#define PDUMP_WRITE(type, object) \
+fwrite (&object, sizeof (object), 1, pdump_out);
+
+#define PDUMP_WRITE_ALIGNED(type, object) do { \
+ PDUMP_ALIGN_OUTPUT (type); \
+ PDUMP_WRITE (type, object); \
+} while (0)
+
+#define PDUMP_READ(ptr, type) \
+(((type *) (ptr = (char*) (((type *) ptr) + 1)))[-1])
+
+#define PDUMP_READ_ALIGNED(ptr, type) \
+((ptr = (char *) ALIGN_PTR (ptr, ALIGNOF (type))), PDUMP_READ (ptr, type))
+
+\f
+
+typedef struct
+{
+ const struct lrecord_description *desc;
+ int count;
+} pdump_reloc_table;
+
+static char *pdump_rt_list = 0;
+
+void
+pdump_objects_unmark (void)
+{
+ int i;
+ char *p = pdump_rt_list;
+ if (p)
+ for (;;)
+ {
+ pdump_reloc_table *rt = (pdump_reloc_table *)p;
+ p += sizeof (pdump_reloc_table);
+ if (rt->desc)
+ {
+ for (i=0; i<rt->count; i++)
+ {
+ struct lrecord_header *lh = * (struct lrecord_header **) p;
+ if (! C_READONLY_RECORD_HEADER_P (lh))
+ UNMARK_RECORD_HEADER (lh);
+ p += sizeof (EMACS_INT);
+ }
+ } else
+ break;
+ }
+}
+
+
+/* The structure of the file
+ 0 - header
+ - dumped objects
+ stab_offset - nb_root_struct_ptrs*pair(void *, adr)
+ for pointers to structures
+ - nb_opaques*pair(void *, size) for raw bits to restore
+ - relocation table
+ - root lisp object address/value couples with the count
+ preceding the list
+ */
+
+
+#define PDUMP_SIGNATURE "XEmacsDP"
+#define PDUMP_SIGNATURE_LEN (sizeof (PDUMP_SIGNATURE) - 1)
+
+typedef struct
+{
+ char signature[PDUMP_SIGNATURE_LEN];
+ unsigned int id;
+ EMACS_UINT stab_offset;
+ EMACS_UINT reloc_address;
+ int nb_root_struct_ptrs;
+ int nb_opaques;
+} pdump_header;
+
+char *pdump_start;
+char *pdump_end;
+static size_t pdump_length;
+
+#ifdef WIN32_NATIVE
+/* Handle for the dump file */
+static HANDLE pdump_hFile = INVALID_HANDLE_VALUE;
+/* Handle for the file mapping object for the dump file */
+static HANDLE pdump_hMap = INVALID_HANDLE_VALUE;
+#endif
+
+static void (*pdump_free) (void);
+
+static unsigned char pdump_align_table[] =
+{
+ 64, 1, 2, 1, 4, 1, 2, 1, 8, 1, 2, 1, 4, 1, 2, 1,
+ 16, 1, 2, 1, 4, 1, 2, 1, 8, 1, 2, 1, 4, 1, 2, 1,
+ 32, 1, 2, 1, 4, 1, 2, 1, 8, 1, 2, 1, 4, 1, 2, 1,
+ 16, 1, 2, 1, 4, 1, 2, 1, 8, 1, 2, 1, 4, 1, 2, 1
+};
+
+static inline unsigned int
+pdump_size_to_align (size_t size)
+{
+ return pdump_align_table[size % countof (pdump_align_table)];
+}
+
+typedef struct pdump_entry_list_elt
+{
+ struct pdump_entry_list_elt *next;
+ const void *obj;
+ size_t size;
+ int count;
+ EMACS_INT save_offset;
+} pdump_entry_list_elt;
+
+typedef struct
+{
+ pdump_entry_list_elt *first;
+ int align;
+ int count;
+} pdump_entry_list;
+
+typedef struct pdump_struct_list_elt
+{
+ pdump_entry_list list;
+ const struct struct_description *sdesc;
+} pdump_struct_list_elt;
+
+typedef struct
+{
+ pdump_struct_list_elt *list;
+ int count;
+ int size;
+} pdump_struct_list;
+
+static pdump_entry_list *pdump_object_table;
+static pdump_entry_list pdump_opaque_data_list;
+static pdump_struct_list pdump_struct_table;
+
+static int *pdump_alert_undump_object;
+
+static unsigned long cur_offset;
+static size_t max_size;
+static int pdump_fd;
+static void *pdump_buf;
+static FILE *pdump_out;
+
+#define PDUMP_HASHSIZE 200001
+
+static pdump_entry_list_elt **pdump_hash;
+
+/* Since most pointers are eight bytes aligned, the >>3 allows for a better hash */
+static int
+pdump_make_hash (const void *obj)
+{
+ return ((unsigned long)(obj)>>3) % PDUMP_HASHSIZE;
+}
+
+static pdump_entry_list_elt *
+pdump_get_entry (const void *obj)
+{
+ int pos = pdump_make_hash (obj);
+ pdump_entry_list_elt *e;
+
+ assert (obj != 0);
+
+ while ((e = pdump_hash[pos]) != 0)
+ {
+ if (e->obj == obj)
+ return e;
+
+ pos++;
+ if (pos == PDUMP_HASHSIZE)
+ pos = 0;
+ }
+ return 0;
+}
+
+static void
+pdump_add_entry (pdump_entry_list *list, const void *obj, size_t size,
+ int count)
+{
+ pdump_entry_list_elt *e;
+ int pos = pdump_make_hash (obj);
+
+ while ((e = pdump_hash[pos]) != 0)
+ {
+ if (e->obj == obj)
+ return;
+
+ pos++;
+ if (pos == PDUMP_HASHSIZE)
+ pos = 0;
+ }
+
+ e = xnew (pdump_entry_list_elt);
+
+ e->next = list->first;
+ e->obj = obj;
+ e->size = size;
+ e->count = count;
+ list->first = e;
+
+ list->count += count;
+ pdump_hash[pos] = e;
+
+ {
+ int align = pdump_size_to_align (size);
+
+ if (align < list->align)
+ list->align = align;
+ }
+}
+
+static pdump_entry_list *
+pdump_get_entry_list (const struct struct_description *sdesc)
+{
+ int i;
+ for (i=0; i<pdump_struct_table.count; i++)
+ if (pdump_struct_table.list[i].sdesc == sdesc)
+ return &pdump_struct_table.list[i].list;
+
+ if (pdump_struct_table.size <= pdump_struct_table.count)
+ {
+ if (pdump_struct_table.size == -1)
+ pdump_struct_table.size = 10;
+ else
+ pdump_struct_table.size = pdump_struct_table.size * 2;
+ pdump_struct_table.list = (pdump_struct_list_elt *)
+ xrealloc (pdump_struct_table.list,
+ pdump_struct_table.size * sizeof (pdump_struct_list_elt));
+ }
+ pdump_struct_table.list[pdump_struct_table.count].list.first = 0;
+ pdump_struct_table.list[pdump_struct_table.count].list.align = ALIGNOF (max_align_t);
+ pdump_struct_table.list[pdump_struct_table.count].list.count = 0;
+ pdump_struct_table.list[pdump_struct_table.count].sdesc = sdesc;
+
+ return &pdump_struct_table.list[pdump_struct_table.count++].list;
+}
+
+static struct
+{
+ struct lrecord_header *obj;
+ int position;
+ int offset;
+} backtrace[65536];
+
+static int depth;
+
+static void
+pdump_backtrace (void)
+{
+ int i;
+ stderr_out ("pdump backtrace :\n");
+ for (i=0;i<depth;i++)
+ {
+ if (!backtrace[i].obj)
+ stderr_out (" - ind. (%d, %d)\n",
+ backtrace[i].position,
+ backtrace[i].offset);
+ else
+ {
+ stderr_out (" - %s (%d, %d)\n",
+ LHEADER_IMPLEMENTATION (backtrace[i].obj)->name,
+ backtrace[i].position,
+ backtrace[i].offset);
+ }
+ }
+}
+
+static void pdump_register_object (Lisp_Object obj);
+static void pdump_register_struct (const void *data,
+ const struct struct_description *sdesc,
+ int count);
+
+static EMACS_INT
+pdump_get_indirect_count (EMACS_INT code,
+ const struct lrecord_description *idesc,
+ const void *idata)
+{
+ EMACS_INT count = 0; /* initialize to shut up GCC */
+ const void *irdata;
+
+ int line = XD_INDIRECT_VAL (code);
+ int delta = XD_INDIRECT_DELTA (code);
+
+ irdata = ((char *)idata) + idesc[line].offset;
+ switch (idesc[line].type)
+ {
+ case XD_SIZE_T:
+ count = *(size_t *)irdata;
+ break;
+ case XD_INT:
+ count = *(int *)irdata;
+ break;
+ case XD_LONG:
+ count = *(long *)irdata;
+ break;
+ case XD_BYTECOUNT:
+ count = *(Bytecount *)irdata;
+ break;
+ default:
+ stderr_out ("Unsupported count type : %d (line = %d, code=%ld)\n",
+ idesc[line].type, line, (long)code);
+ pdump_backtrace ();
+ ABORT ();
+ }
+ count += delta;
+ return count;
+}
+
+static void
+pdump_register_sub (const void *data, const struct lrecord_description *desc, int me)
+{
+ int pos;
+
+ restart:
+ for (pos = 0; desc[pos].type != XD_END; pos++)
+ {
+ const void *rdata = (const char *)data + desc[pos].offset;
+
+ backtrace[me].position = pos;
+ backtrace[me].offset = desc[pos].offset;
+
+ switch (desc[pos].type)
+ {
+ case XD_SPECIFIER_END:
+ pos = 0;
+ desc = ((const Lisp_Specifier *)data)->methods->extra_description;
+ goto restart;
+ case XD_SIZE_T:
+ case XD_INT:
+ case XD_LONG:
+ case XD_BYTECOUNT:
+ case XD_INT_RESET:
+ case XD_LO_LINK:
+ break;
+ case XD_OPAQUE_DATA_PTR:
+ {
+ EMACS_INT count = desc[pos].data1;
+ if (XD_IS_INDIRECT (count))
+ count = pdump_get_indirect_count (count, desc, data);
+
+ pdump_add_entry (&pdump_opaque_data_list,
+ *(void **)rdata, count, 1);
+ break;
+ }
+ case XD_C_STRING:
+ {
+ const char *str = *(const char **)rdata;
+ if (str)
+ pdump_add_entry (&pdump_opaque_data_list, str, strlen (str)+1, 1);
+ break;
+ }
+ case XD_DOC_STRING:
+ {
+ const char *str = *(const char **)rdata;
+ if ((EMACS_INT)str > 0)
+ pdump_add_entry (&pdump_opaque_data_list, str, strlen (str)+1, 1);
+ break;
+ }
+ case XD_LISP_OBJECT:
+ {
+ const Lisp_Object *pobj = (const Lisp_Object *)rdata;
+
+ assert (desc[pos].data1 == 0);
+
+ backtrace[me].offset = (const char *)pobj - (const char *)data;
+ pdump_register_object (*pobj);
+ break;
+ }
+ case XD_LISP_OBJECT_ARRAY:
+ {
+ int i;
+ EMACS_INT count = desc[pos].data1;
+ if (XD_IS_INDIRECT (count))
+ count = pdump_get_indirect_count (count, desc, data);
+
+ for (i = 0; i < count; i++)
+ {
+ const Lisp_Object *pobj = ((const Lisp_Object *)rdata) + i;
+ Lisp_Object dobj = *pobj;
+
+ backtrace[me].offset = (const char *)pobj - (const char *)data;
+ pdump_register_object (dobj);
+ }
+ break;
+ }
+ case XD_STRUCT_PTR:
+ {
+ EMACS_INT count = desc[pos].data1;
+ const struct struct_description *sdesc = desc[pos].data2;
+ const char *dobj = *(const char **)rdata;
+ if (dobj)
+ {
+ if (XD_IS_INDIRECT (count))
+ count = pdump_get_indirect_count (count, desc, data);
+
+ pdump_register_struct (dobj, sdesc, count);
+ }
+ break;
+ }
+ default:
+ stderr_out ("Unsupported dump type : %d\n", desc[pos].type);
+ pdump_backtrace ();
+ ABORT ();
+ };
+ }
+}
+
+static void
+pdump_register_object (Lisp_Object obj)
+{
+ struct lrecord_header *objh;
+ const struct lrecord_implementation *imp;
+
+ if (!POINTER_TYPE_P (XTYPE (obj)))
+ return;
+
+ objh = XRECORD_LHEADER (obj);
+ if (!objh)
+ return;
+
+ if (pdump_get_entry (objh))
+ return;
+
+ imp = LHEADER_IMPLEMENTATION (objh);
+
+ if (imp->description)
+ {
+ int me = depth++;
+ if (me>65536)
+ {
+ stderr_out ("Backtrace overflow, loop ?\n");
+ ABORT ();
+ }
+ backtrace[me].obj = objh;
+ backtrace[me].position = 0;
+ backtrace[me].offset = 0;
+
+ pdump_add_entry (pdump_object_table + objh->type,
+ objh,
+ imp->static_size ?
+ imp->static_size :
+ imp->size_in_bytes_method (objh),
+ 1);
+ pdump_register_sub (objh, imp->description, me);
+ --depth;
+ }
+ else
+ {
+ pdump_alert_undump_object[objh->type]++;
+ stderr_out ("Undumpable object type : %s\n", imp->name);
+ pdump_backtrace ();
+ }
+}
+
+static void
+pdump_register_struct (const void *data,
+ const struct struct_description *sdesc,
+ int count)
+{
+ if (data && !pdump_get_entry (data))
+ {
+ int me = depth++;
+ int i;
+ if (me>65536)
+ {
+ stderr_out ("Backtrace overflow, loop ?\n");
+ ABORT ();
+ }
+ backtrace[me].obj = 0;
+ backtrace[me].position = 0;
+ backtrace[me].offset = 0;
+
+ pdump_add_entry (pdump_get_entry_list (sdesc),
+ data, sdesc->size, count);
+ for (i=0; i<count; i++)
+ {
+ pdump_register_sub (((char *)data) + sdesc->size*i,
+ sdesc->description,
+ me);
+ }
+ --depth;
+ }
+}
+
+static void
+pdump_dump_data (pdump_entry_list_elt *elt,
+ const struct lrecord_description *desc)
+{
+ size_t size = elt->size;
+ int count = elt->count;
+ if (desc)
+ {
+ int pos, i;
+ memcpy (pdump_buf, elt->obj, size*count);
+
+ for (i=0; i<count; i++)
+ {
+ char *cur = ((char *)pdump_buf) + i*size;
+ restart:
+ for (pos = 0; desc[pos].type != XD_END; pos++)
+ {
+ void *rdata = cur + desc[pos].offset;
+ switch (desc[pos].type)
+ {
+ case XD_SPECIFIER_END:
+ desc = ((const Lisp_Specifier *)(elt->obj))->methods->extra_description;
+ goto restart;
+ case XD_SIZE_T:
+ case XD_INT:
+ case XD_LONG:
+ case XD_BYTECOUNT:
+ break;
+ case XD_INT_RESET:
+ {
+ EMACS_INT val = desc[pos].data1;
+ if (XD_IS_INDIRECT (val))
+ val = pdump_get_indirect_count (val, desc, elt->obj);
+ *(int *)rdata = val;
+ break;
+ }
+ case XD_OPAQUE_DATA_PTR:
+ case XD_C_STRING:
+ case XD_STRUCT_PTR:
+ {
+ void *ptr = *(void **)rdata;
+ if (ptr)
+ *(EMACS_INT *)rdata = pdump_get_entry (ptr)->save_offset;
+ break;
+ }
+ case XD_LO_LINK:
+ {
+ Lisp_Object obj = *(Lisp_Object *)rdata;
+ pdump_entry_list_elt *elt1;
+ for (;;)
+ {
+ elt1 = pdump_get_entry (XRECORD_LHEADER (obj));
+ if (elt1)
+ break;
+ obj = *(Lisp_Object *)(desc[pos].offset + (char *)(XRECORD_LHEADER (obj)));
+ }
+ *(EMACS_INT *)rdata = elt1->save_offset;
+ break;
+ }
+ case XD_LISP_OBJECT:
+ {
+ Lisp_Object *pobj = (Lisp_Object *) rdata;
+
+ assert (desc[pos].data1 == 0);
+
+ if (POINTER_TYPE_P (XTYPE (*pobj)) && XRECORD_LHEADER (*pobj))
+ *(EMACS_INT *)pobj =
+ pdump_get_entry (XRECORD_LHEADER (*pobj))->save_offset;
+ break;
+ }
+ case XD_LISP_OBJECT_ARRAY:
+ {
+ EMACS_INT num = desc[pos].data1;
+ int j;
+ if (XD_IS_INDIRECT (num))
+ num = pdump_get_indirect_count (num, desc, elt->obj);
+
+ for (j=0; j<num; j++)
+ {
+ Lisp_Object *pobj = ((Lisp_Object *)rdata) + j;
+ if (POINTER_TYPE_P (XTYPE (*pobj)) && XRECORD_LHEADER (*pobj))
+ *(EMACS_INT *)pobj =
+ pdump_get_entry (XRECORD_LHEADER (*pobj))->save_offset;
+ }
+ break;
+ }
+ case XD_DOC_STRING:
+ {
+ EMACS_INT str = *(EMACS_INT *)rdata;
+ if (str > 0)
+ *(EMACS_INT *)rdata = pdump_get_entry ((void *)str)->save_offset;
+ break;
+ }
+ default:
+ stderr_out ("Unsupported dump type : %d\n", desc[pos].type);
+ ABORT ();
+ }
+ }
+ }
+ }
+ fwrite (desc ? pdump_buf : elt->obj, size, count, pdump_out);
+}
+
+static void
+pdump_reloc_one (void *data, EMACS_INT delta,
+ const struct lrecord_description *desc)
+{
+ int pos;
+
+ restart:
+ for (pos = 0; desc[pos].type != XD_END; pos++)
+ {
+ void *rdata = (char *)data + desc[pos].offset;
+ switch (desc[pos].type)
+ {
+ case XD_SPECIFIER_END:
+ pos = 0;
+ desc = ((const Lisp_Specifier *)data)->methods->extra_description;
+ goto restart;
+ case XD_SIZE_T:
+ case XD_INT:
+ case XD_LONG:
+ case XD_BYTECOUNT:
+ case XD_INT_RESET:
+ break;
+ case XD_OPAQUE_DATA_PTR:
+ case XD_C_STRING:
+ case XD_STRUCT_PTR:
+ case XD_LO_LINK:
+ {
+ EMACS_INT ptr = *(EMACS_INT *)rdata;
+ if (ptr)
+ *(EMACS_INT *)rdata = ptr+delta;
+ break;
+ }
+ case XD_LISP_OBJECT:
+ {
+ Lisp_Object *pobj = (Lisp_Object *) rdata;
+
+ assert (desc[pos].data1 == 0);
+
+ if (POINTER_TYPE_P (XTYPE (*pobj))
+ && ! EQ (*pobj, Qnull_pointer))
+ XSETOBJ (*pobj, (char *) XPNTR (*pobj) + delta);
+
+ break;
+ }
+ case XD_LISP_OBJECT_ARRAY:
+ {
+ EMACS_INT num = desc[pos].data1;
+ int j;
+ if (XD_IS_INDIRECT (num))
+ num = pdump_get_indirect_count (num, desc, data);
+
+ for (j=0; j<num; j++)
+ {
+ Lisp_Object *pobj = (Lisp_Object *) rdata + j;
+
+ if (POINTER_TYPE_P (XTYPE (*pobj))
+ && ! EQ (*pobj, Qnull_pointer))
+ XSETOBJ (*pobj, (char *) XPNTR (*pobj) + delta);
+ }
+ break;
+ }
+ case XD_DOC_STRING:
+ {
+ EMACS_INT str = *(EMACS_INT *)rdata;
+ if (str > 0)
+ *(EMACS_INT *)rdata = str + delta;
+ break;
+ }
+ default:
+ stderr_out ("Unsupported dump type : %d\n", desc[pos].type);
+ ABORT ();
+ };
+ }
+}
+
+static void
+pdump_allocate_offset (pdump_entry_list_elt *elt,
+ const struct lrecord_description *desc)
+{
+ size_t size = elt->count * elt->size;
+ elt->save_offset = cur_offset;
+ if (size>max_size)
+ max_size = size;
+ cur_offset += size;
+}
+
+static void
+pdump_scan_by_alignment (void (*f)(pdump_entry_list_elt *,
+ const struct lrecord_description *))
+{
+ int align;
+
+ for (align = ALIGNOF (max_align_t); align; align>>=1)
+ {
+ size_t i;
+ pdump_entry_list_elt *elt;
+
+ for (i=0; i<lrecord_type_count; i++)
+ if (pdump_object_table[i].align == align)
+ for (elt = pdump_object_table[i].first; elt; elt = elt->next)
+ f (elt, lrecord_implementations_table[i]->description);
+
+ for (i=0; i<pdump_struct_table.count; i++)
+ {
+ pdump_struct_list_elt list = pdump_struct_table.list[i];
+ if (list.list.align == align)
+ for (elt = list.list.first; elt; elt = elt->next)
+ f (elt, list.sdesc->description);
+ }
+
+ for (elt = pdump_opaque_data_list.first; elt; elt = elt->next)
+ if (pdump_size_to_align (elt->size) == align)
+ f (elt, 0);
+ }
+}
+
+static void
+pdump_dump_root_struct_ptrs (void)
+{
+ size_t i;
+ size_t count = Dynarr_length (pdump_root_struct_ptrs);
+ pdump_static_pointer *data = alloca_array (pdump_static_pointer, count);
+ for (i = 0; i < count; i++)
+ {
+ data[i].address = (char **) Dynarr_atp (pdump_root_struct_ptrs, i)->ptraddress;
+ data[i].value = (char *) pdump_get_entry (* data[i].address)->save_offset;
+ }
+ PDUMP_ALIGN_OUTPUT (pdump_static_pointer);
+ fwrite (data, sizeof (pdump_static_pointer), count, pdump_out);
+}
+
+static void
+pdump_dump_opaques (void)
+{
+ int i;
+ for (i = 0; i < Dynarr_length (pdump_opaques); i++)
+ {
+ pdump_opaque *info = Dynarr_atp (pdump_opaques, i);
+ PDUMP_WRITE_ALIGNED (pdump_opaque, *info);
+ fwrite (info->varaddress, info->size, 1, pdump_out);
+ }
+}
+
+static void
+pdump_dump_rtables (void)
+{
+ size_t i;
+ pdump_entry_list_elt *elt;
+ pdump_reloc_table rt;
+
+ for (i=0; i<lrecord_type_count; i++)
+ {
+ elt = pdump_object_table[i].first;
+ if (!elt)
+ continue;
+ rt.desc = lrecord_implementations_table[i]->description;
+ rt.count = pdump_object_table[i].count;
+ PDUMP_WRITE_ALIGNED (pdump_reloc_table, rt);
+ while (elt)
+ {
+ EMACS_INT rdata = pdump_get_entry (elt->obj)->save_offset;
+ PDUMP_WRITE_ALIGNED (EMACS_INT, rdata);
+ elt = elt->next;
+ }
+ }
+
+ rt.desc = 0;
+ rt.count = 0;
+ PDUMP_WRITE_ALIGNED (pdump_reloc_table, rt);
+
+ for (i=0; i<pdump_struct_table.count; i++)
+ {
+ elt = pdump_struct_table.list[i].list.first;
+ rt.desc = pdump_struct_table.list[i].sdesc->description;
+ rt.count = pdump_struct_table.list[i].list.count;
+ PDUMP_WRITE_ALIGNED (pdump_reloc_table, rt);
+ while (elt)
+ {
+ EMACS_INT rdata = pdump_get_entry (elt->obj)->save_offset;
+ int j;
+ for (j=0; j<elt->count; j++)
+ {
+ PDUMP_WRITE_ALIGNED (EMACS_INT, rdata);
+ rdata += elt->size;
+ }
+ elt = elt->next;
+ }
+ }
+ rt.desc = 0;
+ rt.count = 0;
+ PDUMP_WRITE_ALIGNED (pdump_reloc_table, rt);
+}
+
+static void
+pdump_dump_root_objects (void)
+{
+ size_t count = (Dynarr_length (pdump_root_objects) +
+ Dynarr_length (pdump_weak_object_chains));
+ EMACS_INT i;
+
+ PDUMP_WRITE_ALIGNED (size_t, count);
+ PDUMP_ALIGN_OUTPUT (pdump_static_Lisp_Object);
+
+ for (i=0; i<Dynarr_length (pdump_root_objects); i++)
+ {
+ pdump_static_Lisp_Object obj;
+ obj.address = Dynarr_at (pdump_root_objects, i);
+ obj.value = * obj.address;
+
+ if (POINTER_TYPE_P (XTYPE (obj.value)))
+ obj.value = wrap_object ((void *) pdump_get_entry (XRECORD_LHEADER (obj.value))->save_offset);
+
+ PDUMP_WRITE (pdump_static_Lisp_Object, obj);
+ }
+
+ for (i=0; i<Dynarr_length (pdump_weak_object_chains); i++)
+ {
+ pdump_entry_list_elt *elt;
+ pdump_static_Lisp_Object obj;
+
+ obj.address = Dynarr_at (pdump_weak_object_chains, i);
+ obj.value = * obj.address;
+
+ for (;;)
+ {
+ const struct lrecord_description *desc;
+ int pos;
+ elt = pdump_get_entry (XRECORD_LHEADER (obj.value));
+ if (elt)
+ break;
+ desc = XRECORD_LHEADER_IMPLEMENTATION (obj.value)->description;
+ for (pos = 0; desc[pos].type != XD_LO_LINK; pos++)
+ assert (desc[pos].type != XD_END);
+
+ obj.value = *(Lisp_Object *)(desc[pos].offset + (char *)(XRECORD_LHEADER (obj.value)));
+ }
+ obj.value = wrap_object ((void *) elt->save_offset);
+
+ PDUMP_WRITE (pdump_static_Lisp_Object, obj);
+ }
+}
+
+void
+pdump (void)
+{
+ size_t i;
+ Lisp_Object t_console, t_device, t_frame;
+ int none;
+ pdump_header header;
+
+ pdump_object_table = xnew_array (pdump_entry_list, lrecord_type_count);
+ pdump_alert_undump_object = xnew_array (int, lrecord_type_count);
+
+ assert (ALIGNOF (max_align_t) <= pdump_align_table[0]);
+
+ for (i = 0; i < countof (pdump_align_table); i++)
+ if (pdump_align_table[i] > ALIGNOF (max_align_t))
+ pdump_align_table[i] = ALIGNOF (max_align_t);
+
+ flush_all_buffer_local_cache ();
+
+ /* These appear in a DEFVAR_LISP, which does a staticpro() */
+ t_console = Vterminal_console; Vterminal_console = Qnil;
+ t_frame = Vterminal_frame; Vterminal_frame = Qnil;
+ t_device = Vterminal_device; Vterminal_device = Qnil;
+
+ dump_add_opaque ((void *) &lrecord_implementations_table,
+ lrecord_type_count * sizeof (lrecord_implementations_table[0]));
+ dump_add_opaque (&lrecord_markers,
+ lrecord_type_count * sizeof (lrecord_markers[0]));
+
+ pdump_hash = xnew_array_and_zero (pdump_entry_list_elt *, PDUMP_HASHSIZE);
+
+ for (i=0; i<lrecord_type_count; i++)
+ {
+ pdump_object_table[i].first = 0;
+ pdump_object_table[i].align = ALIGNOF (max_align_t);
+ pdump_object_table[i].count = 0;
+ pdump_alert_undump_object[i] = 0;
+ }
+ pdump_struct_table.count = 0;
+ pdump_struct_table.size = -1;
+
+ pdump_opaque_data_list.first = 0;
+ pdump_opaque_data_list.align = ALIGNOF (max_align_t);
+ pdump_opaque_data_list.count = 0;
+ depth = 0;
+
+ for (i=0; i<Dynarr_length (pdump_root_objects); i++)
+ pdump_register_object (* Dynarr_at (pdump_root_objects, i));
+
+ none = 1;
+ for (i=0; i<lrecord_type_count; i++)
+ if (pdump_alert_undump_object[i])
+ {
+ if (none)
+ printf ("Undumpable types list :\n");
+ none = 0;
+ printf (" - %s (%d)\n", lrecord_implementations_table[i]->name, pdump_alert_undump_object[i]);
+ }
+ if (!none)
+ return;
+
+ for (i=0; i<(size_t)Dynarr_length (pdump_root_struct_ptrs); i++)
+ {
+ pdump_root_struct_ptr info = Dynarr_at (pdump_root_struct_ptrs, i);
+ pdump_register_struct (*(info.ptraddress), info.desc, 1);
+ }
+
+ memcpy (header.signature, PDUMP_SIGNATURE, PDUMP_SIGNATURE_LEN);
+ header.id = dump_id;
+ header.reloc_address = 0;
+ header.nb_root_struct_ptrs = Dynarr_length (pdump_root_struct_ptrs);
+ header.nb_opaques = Dynarr_length (pdump_opaques);
+
+ cur_offset = ALIGN_SIZE (sizeof (header), ALIGNOF (max_align_t));
+ max_size = 0;
+
+ pdump_scan_by_alignment (pdump_allocate_offset);
+ cur_offset = ALIGN_SIZE (cur_offset, ALIGNOF (max_align_t));
+ header.stab_offset = cur_offset;
+
+ pdump_buf = xmalloc (max_size);
+ /* Avoid use of the `open' macro. We want the real function. */
+#undef open
+ pdump_fd = open (EMACS_PROGNAME ".dmp",
+ O_WRONLY | O_CREAT | O_TRUNC | OPEN_BINARY, 0666);
+ pdump_out = fdopen (pdump_fd, "w");
+
+ fwrite (&header, sizeof (header), 1, pdump_out);
+ PDUMP_ALIGN_OUTPUT (max_align_t);
+
+ pdump_scan_by_alignment (pdump_dump_data);
+
+ fseek (pdump_out, header.stab_offset, SEEK_SET);
+
+ pdump_dump_root_struct_ptrs ();
+ pdump_dump_opaques ();
+ pdump_dump_rtables ();
+ pdump_dump_root_objects ();
+
+ fclose (pdump_out);
+ close (pdump_fd);
+
+ free (pdump_buf);
+
+ free (pdump_hash);
+
+ Vterminal_console = t_console;
+ Vterminal_frame = t_frame;
+ Vterminal_device = t_device;
+}
+
+static int
+pdump_load_check (void)
+{
+ return (!memcmp (((pdump_header *)pdump_start)->signature,
+ PDUMP_SIGNATURE, PDUMP_SIGNATURE_LEN)
+ && ((pdump_header *)pdump_start)->id == dump_id);
+}
+
+/*----------------------------------------------------------------------*/
+/* Reading the dump file */
+/*----------------------------------------------------------------------*/
+static int
+pdump_load_finish (void)
+{
+ int i;
+ char *p;
+ EMACS_INT delta;
+ EMACS_INT count;
+ pdump_header *header = (pdump_header *)pdump_start;
+
+ pdump_end = pdump_start + pdump_length;
+
+ delta = ((EMACS_INT)pdump_start) - header->reloc_address;
+ p = pdump_start + header->stab_offset;
+
+ /* Put back the pdump_root_struct_ptrs */
+ p = (char *) ALIGN_PTR (p, ALIGNOF (pdump_static_pointer));
+ for (i=0; i<header->nb_root_struct_ptrs; i++)
+ {
+ pdump_static_pointer ptr = PDUMP_READ (p, pdump_static_pointer);
+ (* ptr.address) = ptr.value + delta;
+ }
+
+ /* Put back the pdump_opaques */
+ for (i=0; i<header->nb_opaques; i++)
+ {
+ pdump_opaque info = PDUMP_READ_ALIGNED (p, pdump_opaque);
+ memcpy (info.varaddress, p, info.size);
+ p += info.size;
+ }
+
+ /* Do the relocations */
+ pdump_rt_list = p;
+ count = 2;
+ for (;;)
+ {
+ pdump_reloc_table rt = PDUMP_READ_ALIGNED (p, pdump_reloc_table);
+ p = (char *) ALIGN_PTR (p, ALIGNOF (char *));
+ if (rt.desc)
+ {
+ char **reloc = (char **)p;
+ for (i=0; i < rt.count; i++)
+ {
+ reloc[i] += delta;
+ pdump_reloc_one (reloc[i], delta, rt.desc);
+ }
+ p += rt.count * sizeof (char *);
+ } else
+ if (!(--count))
+ break;
+ }
+
+ /* Put the pdump_root_objects variables in place */
+ i = PDUMP_READ_ALIGNED (p, size_t);
+ p = (char *) ALIGN_PTR (p, ALIGNOF (pdump_static_Lisp_Object));
+ while (i--)
+ {
+ pdump_static_Lisp_Object obj = PDUMP_READ (p, pdump_static_Lisp_Object);
+
+ if (POINTER_TYPE_P (XTYPE (obj.value)))
+ obj.value = wrap_object ((char *) XPNTR (obj.value) + delta);
+
+ (* obj.address) = obj.value;
+ }
+
+ /* Final cleanups */
+ /* reorganize hash tables */
+ p = pdump_rt_list;
+ for (;;)
+ {
+ pdump_reloc_table rt = PDUMP_READ_ALIGNED (p, pdump_reloc_table);
+ p = (char *) ALIGN_PTR (p, ALIGNOF (Lisp_Object));
+ if (!rt.desc)
+ break;
+ if (rt.desc == hash_table_description)
+ {
+ for (i=0; i < rt.count; i++)
+ pdump_reorganize_hash_table (PDUMP_READ (p, Lisp_Object));
+ break;
+ } else
+ p += sizeof (Lisp_Object) * rt.count;
+ }
+
+ return 1;
+}
+
+#ifdef WIN32_NATIVE
+/* Free the mapped file if we decide we don't want it after all */
+static void
+pdump_file_unmap (void)
+{
+ UnmapViewOfFile (pdump_start);
+ CloseHandle (pdump_hFile);
+ CloseHandle (pdump_hMap);
+}
+
+static int
+pdump_file_get (const char *path)
+{
+
+ pdump_hFile = CreateFile (path,
+ GENERIC_READ + GENERIC_WRITE, /* Required for copy on write */
+ 0, /* Not shared */
+ NULL, /* Not inheritable */
+ OPEN_EXISTING,
+ FILE_ATTRIBUTE_NORMAL,
+ NULL); /* No template file */
+ if (pdump_hFile == INVALID_HANDLE_VALUE)
+ return 0;
+
+ pdump_length = GetFileSize (pdump_hFile, NULL);
+ pdump_hMap = CreateFileMapping (pdump_hFile,
+ NULL, /* No security attributes */
+ PAGE_WRITECOPY, /* Copy on write */
+ 0, /* Max size, high half */
+ 0, /* Max size, low half */
+ NULL); /* Unnamed */
+ if (pdump_hMap == INVALID_HANDLE_VALUE)
+ return 0;
+
+ pdump_start = MapViewOfFile (pdump_hMap,
+ FILE_MAP_COPY, /* Copy on write */
+ 0, /* Start at zero */
+ 0,
+ 0); /* Map all of it */
+ pdump_free = pdump_file_unmap;
+ return 1;
+}
+
+/* pdump_resource_free is called (via the pdump_free pointer) to release
+ any resources allocated by pdump_resource_get. Since the Windows API
+ specs specifically state that you don't need to (and shouldn't) free the
+ resources allocated by FindResource, LoadResource, and LockResource this
+ routine does nothing. */
+static void
+pdump_resource_free (void)
+{
+}
+
+static int
+pdump_resource_get (void)
+{
+ HRSRC hRes; /* Handle to dump resource */
+ HRSRC hResLoad; /* Handle to loaded dump resource */
+
+ /* See Q126630 which describes how Windows NT and 95 trap writes to
+ resource sections and duplicate the page to allow the write to proceed.
+ It also describes how to make the resource section read/write (and hence
+ private to each process). Doing this avoids the exceptions and related
+ overhead, but causes the resource section to be private to each process
+ that is running XEmacs. Since the resource section contains little
+ other than the dumped data, which should be private to each process, we
+ make the whole resource section read/write so we don't have to copy it. */
+
+ hRes = FindResource (NULL, MAKEINTRESOURCE(101), "DUMP");
+ if (hRes == NULL)
+ return 0;
+
+ /* Found it, use the data in the resource */
+ hResLoad = LoadResource (NULL, hRes);
+ if (hResLoad == NULL)
+ return 0;
+
+ pdump_start = LockResource (hResLoad);
+ if (pdump_start == NULL)
+ return 0;
+
+ pdump_free = pdump_resource_free;
+ pdump_length = SizeofResource (NULL, hRes);
+ if (pdump_length <= sizeof (pdump_header))
+ {
+ pdump_start = 0;
+ return 0;
+ }
+
+ return 1;
+}
+
+#else /* !WIN32_NATIVE */
+
+static void
+pdump_file_free (void)
+{
+ xfree (pdump_start);
+}
+
+#ifdef HAVE_MMAP
+static void
+pdump_file_unmap (void)
+{
+ munmap (pdump_start, pdump_length);
+}
+#endif
+
+static int
+pdump_file_get (const char *path)
+{
+ int fd = open (path, O_RDONLY | OPEN_BINARY);
+ if (fd<0)
+ return 0;
+
+ pdump_length = lseek (fd, 0, SEEK_END);
+ if (pdump_length < sizeof (pdump_header))
+ {
+ close (fd);
+ return 0;
+ }
+
+ lseek (fd, 0, SEEK_SET);
+
+#ifdef HAVE_MMAP
+/* Unix 98 requires that sys/mman.h define MAP_FAILED,
+ but many earlier implementations don't. */
+# ifndef MAP_FAILED
+# define MAP_FAILED ((void *) -1L)
+# endif
+ pdump_start = (char *) mmap (0, pdump_length, PROT_READ|PROT_WRITE, MAP_PRIVATE, fd, 0);
+ if (pdump_start != (char *) MAP_FAILED)
+ {
+ pdump_free = pdump_file_unmap;
+ close (fd);
+ return 1;
+ }
+#endif /* HAVE_MMAP */
+
+ pdump_start = xnew_array (char, pdump_length);
+ pdump_free = pdump_file_free;
+ read (fd, pdump_start, pdump_length);
+
+ close (fd);
+ return 1;
+}
+#endif /* !WIN32_NATIVE */
+
+
+static int
+pdump_file_try (char *exe_path)
+{
+ char *w = exe_path + strlen (exe_path);
+
+ do
+ {
+ sprintf (w, "-%s-%08x.dmp", EMACS_VERSION, dump_id);
+ if (pdump_file_get (exe_path))
+ {
+ if (pdump_load_check ())
+ return 1;
+ pdump_free ();
+ }
+
+ sprintf (w, "-%08x.dmp", dump_id);
+ if (pdump_file_get (exe_path))
+ {
+ if (pdump_load_check ())
+ return 1;
+ pdump_free ();
+ }
+
+ sprintf (w, ".dmp");
+ if (pdump_file_get (exe_path))
+ {
+ if (pdump_load_check ())
+ return 1;
+ pdump_free ();
+ }
+
+ do
+ w--;
+ while (w>exe_path && !IS_DIRECTORY_SEP (*w) && (*w != '-') && (*w != '.'));
+ }
+ while (w>exe_path && !IS_DIRECTORY_SEP (*w));
+ return 0;
+}
+
+int
+pdump_load (const char *argv0)
+{
+ char exe_path[PATH_MAX], real_exe_path[PATH_MAX];
+#ifdef WIN32_NATIVE
+ GetModuleFileName (NULL, exe_path, PATH_MAX);
+ /* #### urk, needed for xrealpath() below */
+ Vdirectory_sep_char = make_char ('\\');
+#else /* !WIN32_NATIVE */
+ char *w;
+ const char *dir, *p;
+
+ dir = argv0;
+ if (dir[0] == '-')
+ {
+ /* XEmacs as a login shell, oh goody! */
+ dir = getenv ("SHELL");
+ }
+
+ p = dir + strlen (dir);
+ while (p != dir && !IS_ANY_SEP (p[-1])) p--;
+
+ if (p != dir)
+ {
+ /* invocation-name includes a directory component -- presumably it
+ is relative to cwd, not $PATH */
+ strcpy (exe_path, dir);
+ }
+ else
+ {
+ const char *path = getenv ("PATH");
+ const char *name = p;
+ for (;;)
+ {
+ p = path;
+ while (*p && *p != SEPCHAR)
+ p++;
+ if (p == path)
+ {
+ exe_path[0] = '.';
+ w = exe_path + 1;
+ }
+ else
+ {
+ memcpy (exe_path, path, p - path);
+ w = exe_path + (p - path);
+ }
+ if (!IS_DIRECTORY_SEP (w[-1]))
+ {
+ *w++ = '/';
+ }
+ strcpy (w, name);
+
+ /* Check that exe_path is executable and not a directory */
+#undef access /* avoid !@#$%^& encapsulated access */
+#undef stat /* avoid !@#$%^& encapsulated stat */
+ {
+ struct stat statbuf;
+ if (access (exe_path, X_OK) == 0
+ && stat (exe_path, &statbuf) == 0
+ && ! S_ISDIR (statbuf.st_mode))
+ break;
+ }
+
+ if (!*p)
+ {
+ /* Oh well, let's have some kind of default */
+ sprintf (exe_path, "./%s", name);
+ break;
+ }
+ path = p+1;
+ }
+ }
+#endif /* WIN32_NATIVE */
+
+ /* Save exe_path because pdump_file_try() modifies it */
+ strcpy(real_exe_path, exe_path);
+ if (pdump_file_try (exe_path)
+ || (xrealpath(real_exe_path, real_exe_path)
+ && pdump_file_try (real_exe_path)))
+ {
+ pdump_load_finish ();
+ return 1;
+ }
+
+#ifdef WIN32_NATIVE
+ if (pdump_resource_get ())
+ {
+ if (pdump_load_check ())
+ {
+ pdump_load_finish ();
+ return 1;
+ }
+ pdump_free ();
+ }
+#endif
+
+ return 0;
+}
projects / chise / xemacs-chise.git- / blobdiff