unwind-dw2.c (_Unwind_FindEnclosingFunction): Constify variable.

	* unwind-dw2.c (_Unwind_FindEnclosingFunction): Constify variable.
	(uw_frame_state_for): Constify variables.
	(extract_cie_info): Constify first argument.

	* unwind-dw2-fde-darwin.c: Adjust prototype of
	_Unwind_Find_registered_FDE for recent changes.
	(examine_objects): Constify return value and local variable result.
	(_Unwind_Find_FDE): Constify return value and local variable ret.

From-SVN: r73172

gcc/ChangeLog

+2003-11-01  Andreas Jaeger  <aj@suse.de>
+
+	* unwind-dw2.c (_Unwind_FindEnclosingFunction): Constify variable.
+	(uw_frame_state_for): Constify variables.
+	(extract_cie_info): Constify first argument.
+
+	* unwind-dw2-fde-darwin.c: Adjust prototype of
+	_Unwind_Find_registered_FDE for recent changes.
+	(examine_objects): Constify return value and local variable result.
+	(_Unwind_Find_FDE): Constify return value and local variable ret.
+
 2003-10-31  Per Bothner  <pbothner@apple.com>
 
 	* c-opts.c (finish_options):  Change to returns boolean - false iff

gcc/unwind-dw2-fde-darwin.c

@@ -41,7 +41,7 @@ typedef int __gthread_mutex_t;
 #define __gthread_mutex_lock(x)  (void)(x)
 #define __gthread_mutex_unlock(x) (void)(x)
 
-static fde * _Unwind_Find_registered_FDE (void *pc, 
+static const fde * _Unwind_Find_registered_FDE (void *pc,
 						struct dwarf_eh_bases *bases);
 
 #define _Unwind_Find_FDE _Unwind_Find_registered_FDE
@@ -137,10 +137,10 @@ live_image_destructor (struct live_images *image)
    check whether the PC is inside the FDE of each unseen image.
  */
 
-static inline fde *
+static inline const fde *
 examine_objects (void *pc, struct dwarf_eh_bases *bases, int dont_alloc)
 {
-  fde *result = NULL;
+  const fde *result = NULL;
   struct live_images *image;
 
   image = _keymgr_get_and_lock_processwide_ptr (KEYMGR_GCC3_LIVE_IMAGE_LIST);
@@ -229,11 +229,11 @@ examine_objects (void *pc, struct dwarf_eh_bases *bases, int dont_alloc)
   return result;
 }
 
-fde *
+const fde *
 _Unwind_Find_FDE (void *pc, struct dwarf_eh_bases *bases)
 {
   struct km_object_info *the_obj_info;
-  fde *ret = NULL;
+  const fde *ret = NULL;
 
   the_obj_info =
     _keymgr_get_and_lock_processwide_ptr (KEYMGR_GCC3_DW2_OBJ_LIST);

gcc/unwind-dw2.c

@@ -290,7 +290,7 @@ void *
 _Unwind_FindEnclosingFunction (void *pc)
 {
   struct dwarf_eh_bases bases;
-  struct dwarf_fde *fde = _Unwind_Find_FDE (pc-1, &bases);
+  const struct dwarf_fde *fde = _Unwind_Find_FDE (pc-1, &bases);
   if (fde)
     return bases.func;
   else
@@ -316,7 +316,7 @@ _Unwind_GetTextRelBase (struct _Unwind_Context *context)
    or NULL if we encountered an undecipherable augmentation.  */
 
 static const unsigned char *
-extract_cie_info (struct dwarf_cie *cie, struct _Unwind_Context *context,
+extract_cie_info (const struct dwarf_cie *cie, struct _Unwind_Context *context,
 		  _Unwind_FrameState *fs)
 {
   const unsigned char *aug = cie->augmentation;
@@ -1001,8 +1001,8 @@ execute_cfa_program (const unsigned char *insn_ptr,
 static _Unwind_Reason_Code
 uw_frame_state_for (struct _Unwind_Context *context, _Unwind_FrameState *fs)
 {
-  struct dwarf_fde *fde;
-  struct dwarf_cie *cie;
+  const struct dwarf_fde *fde;
+  const struct dwarf_cie *cie;
   const unsigned char *aug, *insn, *end;
 
   memset (fs, 0, sizeof (*fs));