Fix wrong source file name of cross-arm-binutils.

[platform/upstream/binutils.git] / gdb / frame.c

diff --git a/gdb/frame.c b/gdb/frame.c
index f44cf50..5c4217c 100644 (file)
--- a/gdb/frame.c
+++ b/gdb/frame.c
@@ -23,8 +23,6 @@
 #include "value.h"
 #include "inferior.h"  /* for inferior_ptid */
 #include "regcache.h"
-#include "gdb_assert.h"
-#include <string.h>
 #include "user-regs.h"
 #include "gdb_obstack.h"
 #include "dummy-frame.h"
@@ -38,7 +36,6 @@
 #include "gdbcmd.h"
 #include "observer.h"
 #include "objfiles.h"
-#include "exceptions.h"
 #include "gdbthread.h"
 #include "block.h"
 #include "inline-frame.h"
@@ -145,6 +142,10 @@ struct frame_info
   /* The reason why we could not set PREV, or UNWIND_NO_REASON if we
      could.  Only valid when PREV_P is set.  */
   enum unwind_stop_reason stop_reason;
+
+  /* A frame specific string describing the STOP_REASON in more detail.
+     Only valid when PREV_P is set, but even then may still be NULL.  */
+  const char *stop_string;
 };
 
 /* A frame stash used to speed up frame lookups.  Create a hash table
@@ -695,7 +696,7 @@ frame_id_inner (struct gdbarch *gdbarch, struct frame_id l, struct frame_id r)
           && l.special_addr == r.special_addr)
     {
       /* Same function, different inlined functions.  */
-      struct block *lb, *rb;
+      const struct block *lb, *rb;
 
       gdb_assert (l.code_addr_p && r.code_addr_p);
 
@@ -956,7 +957,7 @@ frame_pop (struct frame_info *this_frame)
     {
       /* Popping a dummy frame involves restoring more than just registers.
         dummy_frame_pop does all the work.  */
-      dummy_frame_pop (get_frame_id (this_frame));
+      dummy_frame_pop (get_frame_id (this_frame), inferior_ptid);
       return;
     }
 
@@ -1798,14 +1799,12 @@ get_prev_frame_if_no_cycle (struct frame_info *this_frame)
   return prev_frame;
 }
 
-/* Return a "struct frame_info" corresponding to the frame that called
-   THIS_FRAME.  Returns NULL if there is no such frame.
-
-   Unlike get_prev_frame, this function always tries to unwind the
-   frame.  */
+/* Helper function for get_prev_frame_always, this is called inside a
+   TRY_CATCH block.  Return the frame that called THIS_FRAME or NULL if
+   there is no such frame.  This may throw an exception.  */
 
-struct frame_info *
-get_prev_frame_always (struct frame_info *this_frame)
+static struct frame_info *
+get_prev_frame_always_1 (struct frame_info *this_frame)
 {
   struct gdbarch *gdbarch;
 
@@ -1955,6 +1954,50 @@ get_prev_frame_always (struct frame_info *this_frame)
   return get_prev_frame_if_no_cycle (this_frame);
 }
 
+/* Return a "struct frame_info" corresponding to the frame that called
+   THIS_FRAME.  Returns NULL if there is no such frame.
+
+   Unlike get_prev_frame, this function always tries to unwind the
+   frame.  */
+
+struct frame_info *
+get_prev_frame_always (struct frame_info *this_frame)
+{
+  volatile struct gdb_exception ex;
+  struct frame_info *prev_frame = NULL;
+
+  TRY_CATCH (ex, RETURN_MASK_ERROR)
+    {
+      prev_frame = get_prev_frame_always_1 (this_frame);
+    }
+  if (ex.reason < 0)
+    {
+      if (ex.error == MEMORY_ERROR)
+       {
+         this_frame->stop_reason = UNWIND_MEMORY_ERROR;
+         if (ex.message != NULL)
+           {
+             char *stop_string;
+             size_t size;
+
+             /* The error needs to live as long as the frame does.
+                Allocate using stack local STOP_STRING then assign the
+                pointer to the frame, this allows the STOP_STRING on the
+                frame to be of type 'const char *'.  */
+             size = strlen (ex.message) + 1;
+             stop_string = frame_obstack_zalloc (size);
+             memcpy (stop_string, ex.message, size);
+             this_frame->stop_string = stop_string;
+           }
+         prev_frame = NULL;
+       }
+      else
+       throw_exception (ex);
+    }
+
+  return prev_frame;
+}
+
 /* Construct a new "struct frame_info" and link it previous to
    this_frame.  */
 
@@ -2576,6 +2619,20 @@ unwind_stop_reason_to_string (enum unwind_stop_reason reason)
     }
 }
 
+const char *
+frame_stop_reason_string (struct frame_info *fi)
+{
+  gdb_assert (fi->prev_p);
+  gdb_assert (fi->prev == NULL);
+
+  /* Return the specific string if we have one.  */
+  if (fi->stop_string != NULL)
+    return fi->stop_string;
+
+  /* Return the generic string if we have nothing better.  */
+  return unwind_stop_reason_to_string (fi->stop_reason);
+}
+
 /* Return the enum symbol name of REASON as a string, to use in debug
    output.  */
 
@@ -2647,7 +2704,8 @@ static struct cmd_list_element *show_backtrace_cmdlist;
 static void
 set_backtrace_cmd (char *args, int from_tty)
 {
-  help_list (set_backtrace_cmdlist, "set backtrace ", -1, gdb_stdout);
+  help_list (set_backtrace_cmdlist, "set backtrace ", all_commands,
+            gdb_stdout);
 }
 
 static void