Make queue_and_load_dwo_tu receive a dwarf2_cu

queue_and_load_dwo_tu, used as a callback for htab_traverse_noresize,
currently receives a dwarf2_per_cu_data as its `info` user data.  It
accesses the current dwarf2_cu object through the dwarf2_per_cu_data::cu field.
This field will be removed, because the dwarf2_per_cu_data will become
objfile-independent, while dwarf_cu will remain objfile-dependent.

To remove references to this field, change queue_and_load_dwo_tu so
that it expects to receive a pointer to the dwarf2_cu as its info
parameter.

A reference to dwarf2_per_cu_data::cu needs to be added, but it will get
removed in a subsequent patch, when this function gets re-worked.

I kept this as a separate patch, because since there's no strong typing
here, it's easy to miss something.

gdb/ChangeLog:

	* dwarf2/read.c (queue_and_load_dwo_tu): Expect a dwarf2_cu as
	the info parameter.
	(queue_and_load_all_dwo_tus): Pass per_cu->cu.

diff --git a/gdb/dwarf2/read.c b/gdb/dwarf2/read.c
index 2d6b9e1a73d8462965c907cb41447de674b746af..3138e961bc9706c308202f1d18a8f72763e8fdaf 100644 (file)
--- a/gdb/dwarf2/read.c
+++ b/gdb/dwarf2/read.c
@@ -12792,10 +12792,9 @@ static int
 queue_and_load_dwo_tu (void **slot, void *info)
 {
   struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot;
-  struct dwarf2_per_cu_data *per_cu = (struct dwarf2_per_cu_data *) info;
+  dwarf2_cu *cu = (dwarf2_cu *) info;
   ULONGEST signature = dwo_unit->signature;
-  struct signatured_type *sig_type =
-    lookup_dwo_signatured_type (per_cu->cu, signature);
+  signatured_type *sig_type = lookup_dwo_signatured_type (cu, signature);
 
   if (sig_type != NULL)
     {
@@ -12804,9 +12803,9 @@ queue_and_load_dwo_tu (void **slot, void *info)
       /* We pass NULL for DEPENDENT_CU because we don't yet know if there's
         a real dependency of PER_CU on SIG_TYPE.  That is detected later
         while processing PER_CU.  */
-      if (maybe_queue_comp_unit (NULL, sig_cu, per_cu->cu->language))
-       load_full_type_unit (sig_cu, per_cu->cu->per_objfile);
-      per_cu->imported_symtabs_push (sig_cu);
+      if (maybe_queue_comp_unit (NULL, sig_cu, cu->language))
+       load_full_type_unit (sig_cu, cu->per_objfile);
+      cu->per_cu->imported_symtabs_push (sig_cu);
     }
 
   return 1;
@@ -12833,7 +12832,7 @@ queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *per_cu)
   dwo_file = dwo_unit->dwo_file;
   if (dwo_file->tus != NULL)
     htab_traverse_noresize (dwo_file->tus.get (), queue_and_load_dwo_tu,
-                           per_cu);
+                           per_cu->cu);
 }
 
 /* Read in various DIEs.  */