* bcache.c, bcache.h: New files to implement a byte cache.

	* Makefile.in (SFILES): Add bcache.c.
	(symtab_h): Add bcache.h.
	(HFILES_NO_SRCDIR): add bcache.h
	(COMMON_OBJS): Add bcache.o
	(bcache.o): New target.
	* dbxread.c (start_psymtab): Make global_syms & static_syms
 	type "partial_symbol **".
	* hpread.c (hpread_start_symtab):  Ditto.
	* os9kread.c (os9k_start_psymtab):  Ditto.
	* stabsread.h (start_psymtab):  Ditto.
	* {symfile.c, symfile.h} (start_psymtab_common):  Ditto.
	* maint.c (maintenance_print_statistics): Call
 	print_symbol_bcache_statistics.
	* objfiles.c (allocate_objfile): Initialize psymbol bcache malloc
	and free pointers.
	* solib.c (allocate_rt_common_objfile): Ditto.
	* symfile.c (reread_symbols):  Ditto.
	(free_objfile): Free psymbol bcache when objfile is freed.
	(objfile_relocate): Use new indirect psymbol pointers.
	* objfiles.h (struct objfile): Add psymbol cache.
	* symfile.c (compare_psymbols): Now passed pointers to pointers to
	psymbols.
	(reread_symbols): Free psymbol bcache when freeing other objfile
	resources.
	(add_psymbol_to_list, add_psymbol_addr_to_list): Initialize new
	psymbol using the psymbol bcache.
	(init_psymbol_list): Psymbol lists now contain pointers rather than
	the actual psymbols.
	* symfile.h (psymbol_allocation_list): Psymbol lists now dynamically
	grown arrays of pointers.
	(ADD_PSYMBOL_VT_TO_LIST): Initialize new symbol using the psymbol
	bcache.
	* symmisc.c (print_partial_symbols): Now takes pointer to pointer
	to partial symbol.
	(print_symbol_bcache_statistics): New function to print per objfile
 	bcache statistics.
	(print_partial_symbol, print_partial_symbols,
 	maintenance_check_symtabs, extend_psymbol_list):
 	Account for change to pointer to pointer to partial symbol.
	* symtab.c (find_pc_psymbol, lookup_partial_symbol, decode_line_2,
	make_symbol_completion_list):
 	Account for change to pointer to pointer to partial symbol.
	* symtab.h (bcache.h): Include.
	* xcoffread.c (xcoff_start_psymtab): Make global_syms & static_syms
 	type "partial_symbol **".

1 files changed, 13 insertions, 5 deletions

diff --git a/gdb/objfiles.c b/gdb/objfiles.c
index e486550..ed9f1cf 100644
--- a/gdb/objfiles.c
+++ b/gdb/objfiles.c
@@ -159,6 +159,8 @@ allocate_objfile (abfd, mapped)
 	    objfile -> md = md;
 	    objfile -> mmfd = fd;
 	    /* Update pointers to functions to *our* copies */
+	    obstack_chunkfun (&objfile -> psymbol_cache.cache, xmmalloc);
+	    obstack_freefun (&objfile -> psymbol_cache.cache, mfree);
 	    obstack_chunkfun (&objfile -> psymbol_obstack, xmmalloc);
 	    obstack_freefun (&objfile -> psymbol_obstack, mfree);
 	    obstack_chunkfun (&objfile -> symbol_obstack, xmmalloc);
@@ -186,6 +188,9 @@ allocate_objfile (abfd, mapped)
 	    objfile -> mmfd = fd;
 	    objfile -> flags |= OBJF_MAPPED;
 	    mmalloc_setkey (objfile -> md, 0, objfile);
+	    obstack_specify_allocation_with_arg (&objfile -> psymbol_cache.cache,
+						 0, 0, xmmalloc, mfree,
+						 objfile -> md);
 	    obstack_specify_allocation_with_arg (&objfile -> psymbol_obstack,
 						 0, 0, xmmalloc, mfree,
 						 objfile -> md);
@@ -228,6 +233,8 @@ allocate_objfile (abfd, mapped)
       objfile = (struct objfile *) xmalloc (sizeof (struct objfile));
       memset (objfile, 0, sizeof (struct objfile));
       objfile -> md = NULL;
+      obstack_specify_allocation (&objfile -> psymbol_cache.cache, 0, 0,
+				  xmalloc, free);
       obstack_specify_allocation (&objfile -> psymbol_obstack, 0, 0, xmalloc,
 				  free);
       obstack_specify_allocation (&objfile -> symbol_obstack, 0, 0, xmalloc,
@@ -433,6 +440,7 @@ free_objfile (objfile)
       if (objfile->static_psymbols.list)
 	mfree (objfile->md, objfile->static_psymbols.list);
       /* Free the obstacks for non-reusable objfiles */
+      obstack_free (&objfile -> psymbol_cache.cache, 0);
       obstack_free (&objfile -> psymbol_obstack, 0);
       obstack_free (&objfile -> symbol_obstack, 0);
       obstack_free (&objfile -> type_obstack, 0);
@@ -552,18 +560,18 @@ objfile_relocate (objfile, new_offsets)
   }
 
   {
-    struct partial_symbol *psym;
+    struct partial_symbol **psym;
 
     for (psym = objfile->global_psymbols.list;
 	 psym < objfile->global_psymbols.next;
 	 psym++)
-      if (SYMBOL_SECTION (psym) >= 0)
-	SYMBOL_VALUE_ADDRESS (psym) += ANOFFSET (delta, SYMBOL_SECTION (psym));
+      if (SYMBOL_SECTION (*psym) >= 0)
+	SYMBOL_VALUE_ADDRESS (*psym) += ANOFFSET (delta, SYMBOL_SECTION (*psym));
     for (psym = objfile->static_psymbols.list;
 	 psym < objfile->static_psymbols.next;
 	 psym++)
-      if (SYMBOL_SECTION (psym) >= 0)
-	SYMBOL_VALUE_ADDRESS (psym) += ANOFFSET (delta, SYMBOL_SECTION (psym));
+      if (SYMBOL_SECTION (*psym) >= 0)
+	SYMBOL_VALUE_ADDRESS (*psym) += ANOFFSET (delta, SYMBOL_SECTION (*psym));
   }
 
   {