HPUX gas testsuite fixes

[deliverable/binutils-gdb.git] / gdb / frame-unwind.c

diff --git a/gdb/frame-unwind.c b/gdb/frame-unwind.c
index 9fdeceff9dd7e255e983da3864dbb53162404b8a..079a411c205575f93f2a0e632d325a90d98f4399 100644 (file)
--- a/gdb/frame-unwind.c
+++ b/gdb/frame-unwind.c
@@ -1,6 +1,6 @@
 /* Definitions for frame unwinder, for GDB, the GNU debugger.
 
-   Copyright (C) 2003-2014 Free Software Foundation, Inc.
+   Copyright (C) 2003-2020 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -26,6 +26,7 @@
 #include "regcache.h"
 #include "gdb_obstack.h"
 #include "target.h"
+#include "gdbarch.h"
 
 static struct gdbarch_data *frame_unwind_data;
 
@@ -64,7 +65,8 @@ void
 frame_unwind_prepend_unwinder (struct gdbarch *gdbarch,
                                const struct frame_unwind *unwinder)
 {
-  struct frame_unwind_table *table = gdbarch_data (gdbarch, frame_unwind_data);
+  struct frame_unwind_table *table
+    = (struct frame_unwind_table *) gdbarch_data (gdbarch, frame_unwind_data);
   struct frame_unwind_table_entry *entry;
 
   /* Insert the new entry at the start of the list.  */
@@ -78,7 +80,8 @@ void
 frame_unwind_append_unwinder (struct gdbarch *gdbarch,
                              const struct frame_unwind *unwinder)
 {
-  struct frame_unwind_table *table = gdbarch_data (gdbarch, frame_unwind_data);
+  struct frame_unwind_table *table
+    = (struct frame_unwind_table *) gdbarch_data (gdbarch, frame_unwind_data);
   struct frame_unwind_table_entry **ip;
 
   /* Find the end of the list and insert the new entry there.  */
@@ -95,35 +98,39 @@ static int
 frame_unwind_try_unwinder (struct frame_info *this_frame, void **this_cache,
                           const struct frame_unwind *unwinder)
 {
-  struct cleanup *old_cleanup;
-  volatile struct gdb_exception ex;
   int res = 0;
 
-  old_cleanup = frame_prepare_for_sniffer (this_frame, unwinder);
+  frame_prepare_for_sniffer (this_frame, unwinder);
 
-  TRY_CATCH (ex, RETURN_MASK_ERROR)
+  try
     {
       res = unwinder->sniffer (unwinder, this_frame, this_cache);
     }
-  if (ex.reason < 0 && ex.error == NOT_AVAILABLE_ERROR)
-    {
-      /* This usually means that not even the PC is available,
-        thus most unwinders aren't able to determine if they're
-        the best fit.  Keep trying.  Fallback prologue unwinders
-        should always accept the frame.  */
-      do_cleanups (old_cleanup);
-      return 0;
-    }
-  else if (ex.reason < 0)
-    throw_exception (ex);
-  else if (res)
+  catch (const gdb_exception &ex)
     {
-      discard_cleanups (old_cleanup);
-      return 1;
+      /* Catch all exceptions, caused by either interrupt or error.
+        Reset *THIS_CACHE.  */
+      *this_cache = NULL;
+      frame_cleanup_after_sniffer (this_frame);
+
+      if (ex.error == NOT_AVAILABLE_ERROR)
+       {
+         /* This usually means that not even the PC is available,
+            thus most unwinders aren't able to determine if they're
+            the best fit.  Keep trying.  Fallback prologue unwinders
+            should always accept the frame.  */
+         return 0;
+       }
+      throw;
     }
+
+  if (res)
+    return 1;
   else
     {
-      do_cleanups (old_cleanup);
+      /* Don't set *THIS_CACHE to NULL here, because sniffer has to do
+        so.  */
+      frame_cleanup_after_sniffer (this_frame);
       return 0;
     }
   gdb_assert_not_reached ("frame_unwind_try_unwinder");
@@ -137,7 +144,8 @@ void
 frame_unwind_find_by_frame (struct frame_info *this_frame, void **this_cache)
 {
   struct gdbarch *gdbarch = get_frame_arch (this_frame);
-  struct frame_unwind_table *table = gdbarch_data (gdbarch, frame_unwind_data);
+  struct frame_unwind_table *table
+    = (struct frame_unwind_table *) gdbarch_data (gdbarch, frame_unwind_data);
   struct frame_unwind_table_entry *entry;
   const struct frame_unwind *unwinder_from_target;
 
@@ -185,6 +193,26 @@ default_frame_unwind_stop_reason (struct frame_info *this_frame,
     return UNWIND_NO_REASON;
 }
 
+/* See frame-unwind.h.  */
+
+CORE_ADDR
+default_unwind_pc (struct gdbarch *gdbarch, struct frame_info *next_frame)
+{
+  int pc_regnum = gdbarch_pc_regnum (gdbarch);
+  CORE_ADDR pc = frame_unwind_register_unsigned (next_frame, pc_regnum);
+  pc = gdbarch_addr_bits_remove (gdbarch, pc);
+  return pc;
+}
+
+/* See frame-unwind.h.  */
+
+CORE_ADDR
+default_unwind_sp (struct gdbarch *gdbarch, struct frame_info *next_frame)
+{
+  int sp_regnum = gdbarch_sp_regnum (gdbarch);
+  return frame_unwind_register_unsigned (next_frame, sp_regnum);
+}
+
 /* Helper functions for value-based register unwinding.  These return
    a (possibly lazy) value of the appropriate type.  */
 
@@ -204,7 +232,8 @@ frame_unwind_got_optimized (struct frame_info *frame, int regnum)
   mark_value_bytes_optimized_out (val, 0, TYPE_LENGTH (type));
   VALUE_LVAL (val) = lval_register;
   VALUE_REGNUM (val) = regnum;
-  VALUE_FRAME_ID (val) = get_frame_id (frame);
+  VALUE_NEXT_FRAME_ID (val)
+    = get_frame_id (get_next_frame_sentinel_okay (frame));
   return val;
 }
 
@@ -276,9 +305,6 @@ frame_unwind_got_address (struct frame_info *frame, int regnum,
   return reg_val;
 }
 
-/* -Wmissing-prototypes */
-extern initialize_file_ftype _initialize_frame_unwind;
-
 void
 _initialize_frame_unwind (void)
 {