New test case gdb.base/branch-to-self.exp

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

diff --git a/gdb/corelow.c b/gdb/corelow.c
index 42af7f44753dd4309bc07cd3a122ccca38888fba..224719e8b322f6547e55243d92a78b0e03c1c36d 100644 (file)
--- a/gdb/corelow.c
+++ b/gdb/corelow.c
@@ -1,6 +1,6 @@
 /* Core dump and executable file functions below target vector, for GDB.
 
-   Copyright (C) 1986-2014 Free Software Foundation, Inc.
+   Copyright (C) 1986-2016 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -38,7 +38,6 @@
 #include "symfile.h"
 #include "exec.h"
 #include "readline/readline.h"
-#include "exceptions.h"
 #include "solib.h"
 #include "filenames.h"
 #include "progspace.h"
@@ -134,9 +133,7 @@ sniff_core_bfd (bfd *abfd)
 
   /* Don't sniff if we have support for register sets in
      CORE_GDBARCH.  */
-  if (core_gdbarch
-      && (gdbarch_iterate_over_regset_sections_p (core_gdbarch)
-         || gdbarch_regset_from_core_section_p (core_gdbarch)))
+  if (core_gdbarch && gdbarch_iterate_over_regset_sections_p (core_gdbarch))
     return NULL;
 
   for (cf = core_file_fns; cf != NULL; cf = cf->next)
@@ -237,7 +234,7 @@ add_to_thread_list (bfd *abfd, asection *asect, void *reg_sect_arg)
   int fake_pid_p = 0;
   struct inferior *inf;
 
-  if (strncmp (bfd_section_name (abfd, asect), ".reg/", 5) != 0)
+  if (!startswith (bfd_section_name (abfd, asect), ".reg/"))
     return;
 
   core_tid = atoi (bfd_section_name (abfd, asect) + 5);
@@ -281,7 +278,6 @@ core_open (const char *arg, int from_tty)
   bfd *temp_bfd;
   int scratch_chan;
   int flags;
-  volatile struct gdb_exception except;
   char *filename;
 
   target_preopen (from_tty);
@@ -414,13 +410,16 @@ core_open (const char *arg, int from_tty)
      may be a thread_stratum target loaded on top of target core by
      now.  The layer above should claim threads found in the BFD
      sections.  */
-  TRY_CATCH (except, RETURN_MASK_ERROR)
+  TRY
     {
-      target_find_new_threads ();
+      target_update_thread_list ();
     }
 
-  if (except.reason < 0)
-    exception_print (gdb_stderr, except);
+  CATCH (except, RETURN_MASK_ERROR)
+    {
+      exception_print (gdb_stderr, except);
+    }
+  END_CATCH
 
   p = bfd_core_file_failing_command (core_bfd);
   if (p)
@@ -459,6 +458,22 @@ core_open (const char *arg, int from_tty)
   /* Now, set up the frame cache, and print the top of stack.  */
   reinit_frame_cache ();
   print_stack_frame (get_selected_frame (NULL), 1, SRC_AND_LOC, 1);
+
+  /* Current thread should be NUM 1 but the user does not know that.
+     If a program is single threaded gdb in general does not mention
+     anything about threads.  That is why the test is >= 2.  */
+  if (thread_count () >= 2)
+    {
+      TRY
+       {
+         thread_command (NULL, from_tty);
+       }
+      CATCH (except, RETURN_MASK_ERROR)
+       {
+         exception_print (gdb_stderr, except);
+       }
+      END_CATCH
+    }
 }
 
 static void
@@ -526,8 +541,13 @@ get_core_register_section (struct regcache *regcache,
       warning (_("Section `%s' in core file too small."), section_name);
       return;
     }
+  if (size != min_size && !(regset->flags & REGSET_VARIABLE_SIZE))
+    {
+      warning (_("Unexpected size of section `%s' in core file."),
+              section_name);
+    }
 
-  contents = alloca (size);
+  contents = (char *) alloca (size);
   if (! bfd_get_section_contents (core_bfd, section, contents,
                                  (file_ptr) 0, size))
     {
@@ -536,20 +556,6 @@ get_core_register_section (struct regcache *regcache,
       return;
     }
 
-  if (regset == NULL
-      && core_gdbarch && gdbarch_regset_from_core_section_p (core_gdbarch))
-    {
-      regset = gdbarch_regset_from_core_section (core_gdbarch,
-                                                name, size);
-      if (regset == NULL)
-       {
-         if (required)
-           warning (_("Couldn't recognize %s registers in core file."),
-                    human_name);
-         return;
-       }
-    }
-
   if (regset != NULL)
     {
       regset->supply_regset (regset, regcache, -1, contents, size);
@@ -605,9 +611,7 @@ get_core_registers (struct target_ops *ops,
   int i;
   struct gdbarch *gdbarch;
 
-  if (!(core_gdbarch
-       && (gdbarch_iterate_over_regset_sections_p (core_gdbarch)
-           || gdbarch_regset_from_core_section_p (core_gdbarch)))
+  if (!(core_gdbarch && gdbarch_iterate_over_regset_sections_p (core_gdbarch))
       && (core_vec == NULL || core_vec->core_read_registers == NULL))
     {
       fprintf_filtered (gdb_stderr,
@@ -652,7 +656,7 @@ struct spuid_list
 static void
 add_to_spuid_list (bfd *abfd, asection *asect, void *list_p)
 {
-  struct spuid_list *list = list_p;
+  struct spuid_list *list = (struct spuid_list *) list_p;
   enum bfd_endian byte_order
     = bfd_big_endian (abfd) ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE;
   int fd, pos = 0;
@@ -973,7 +977,7 @@ core_pid_to_str (struct target_ops *ops, ptid_t ptid)
 
   /* Otherwise, this isn't a "threaded" core -- use the PID field, but
      only if it isn't a fake PID.  */
-  inf = find_inferior_pid (ptid_get_pid (ptid));
+  inf = find_inferior_ptid (ptid);
   if (inf != NULL && !inf->fake_pid_p)
     return normal_pid_to_str (ptid);
 
@@ -982,6 +986,15 @@ core_pid_to_str (struct target_ops *ops, ptid_t ptid)
   return buf;
 }
 
+static const char *
+core_thread_name (struct target_ops *self, struct thread_info *thr)
+{
+  if (core_gdbarch
+      && gdbarch_core_thread_name_p (core_gdbarch))
+    return gdbarch_core_thread_name (core_gdbarch, thr);
+  return NULL;
+}
+
 static int
 core_has_memory (struct target_ops *ops)
 {
@@ -1034,6 +1047,7 @@ init_core_ops (void)
   core_ops.to_thread_alive = core_thread_alive;
   core_ops.to_read_description = core_read_description;
   core_ops.to_pid_to_str = core_pid_to_str;
+  core_ops.to_thread_name = core_thread_name;
   core_ops.to_stratum = process_stratum;
   core_ops.to_has_memory = core_has_memory;
   core_ops.to_has_stack = core_has_stack;