gas: slightly relax .startof.()/.sizeof.() testcase

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

diff --git a/gdb/frame.c b/gdb/frame.c
index 54dc833202ad8c36b892f78c5b37bf3e0d150cdd..d98003dee7c34a63bd25356e6674721664a4b2f3 100644 (file)
--- a/gdb/frame.c
+++ b/gdb/frame.c
@@ -1,6 +1,6 @@
 /* Cache and manage frames for GDB, the GNU debugger.
 
-   Copyright (C) 1986-2016 Free Software Foundation, Inc.
+   Copyright (C) 1986-2017 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -1107,7 +1107,10 @@ frame_register_unwind (struct frame_info *frame, int regnum,
   *unavailablep = !value_entirely_available (value);
   *lvalp = VALUE_LVAL (value);
   *addrp = value_address (value);
-  *realnump = VALUE_REGNUM (value);
+  if (*lvalp == lval_register)
+    *realnump = VALUE_REGNUM (value);
+  else
+    *realnump = -1;
 
   if (bufferp)
     {
@@ -2220,6 +2223,17 @@ get_prev_frame (struct frame_info *this_frame)
      something should be calling get_selected_frame() or
      get_current_frame().  */
   gdb_assert (this_frame != NULL);
+  
+  /* If this_frame is the current frame, then compute and stash
+     its frame id prior to fetching and computing the frame id of the
+     previous frame.  Otherwise, the cycle detection code in
+     get_prev_frame_if_no_cycle() will not work correctly.  When
+     get_frame_id() is called later on, an assertion error will
+     be triggered in the event of a cycle between the current
+     frame and its previous frame.  */
+  if (this_frame->level == 0)
+    get_frame_id (this_frame);
+
   frame_pc_p = get_frame_pc_if_available (this_frame, &frame_pc);
 
   /* tausq/2004-12-07: Dummy frames are skipped because it doesn't make much
@@ -2305,6 +2319,22 @@ get_prev_frame (struct frame_info *this_frame)
   return get_prev_frame_always (this_frame);
 }
 
+struct frame_id
+get_prev_frame_id_by_id (struct frame_id id)
+{
+  struct frame_id prev_id;
+  struct frame_info *frame;
+  
+  frame = frame_find_by_id (id);
+
+  if (frame != NULL)
+    prev_id = get_frame_id (get_prev_frame (frame));
+  else
+    prev_id = null_frame_id;
+
+  return prev_id;
+}
+
 CORE_ADDR
 get_frame_pc (struct frame_info *frame)
 {