X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gdb%2Fcorelow.c;h=74f660828df2b6b085f5f55b8ea433399303e4ef;hb=5018ce90c1205d79f29adf954b0fd5e613d08430;hp=b32fa955fdab305a812636518e3b7758db57f8f6;hpb=30baf67b6505d903bf678f9a0ba3645eb337ce49;p=deliverable%2Fbinutils-gdb.git

diff --git a/gdb/corelow.c b/gdb/corelow.c
index b32fa955fd..74f660828d 100644
--- 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) 1986-2019 Free Software Foundation, Inc.
+   Copyright (C) 1986-2020 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -35,7 +35,7 @@
 #include "regset.h"
 #include "symfile.h"
 #include "exec.h"
-#include "readline/readline.h"
+#include "readline/tilde.h"
 #include "solib.h"
 #include "filenames.h"
 #include "progspace.h"
@@ -43,6 +43,8 @@
 #include "gdb_bfd.h"
 #include "completer.h"
 #include "gdbsupport/filestuff.h"
+#include "build-id.h"
+#include "gdbsupport/pathstuff.h"
 
 #ifndef O_LARGEFILE
 #define O_LARGEFILE 0
@@ -92,7 +94,7 @@ public:
   bool has_memory () override;
   bool has_stack () override;
   bool has_registers () override;
-  bool has_execution (ptid_t) override { return false; }
+  bool has_execution (inferior *inf) override { return false; }
 
   bool info_proc (const char *, enum info_proc_what) override;
 
@@ -351,6 +353,27 @@ core_file_command (const char *filename, int from_tty)
     core_target_open (filename, from_tty);
 }
 
+/* Locate (and load) an executable file (and symbols) given the core file
+   BFD ABFD.  */
+
+static void
+locate_exec_from_corefile_build_id (bfd *abfd, int from_tty)
+{
+  const bfd_build_id *build_id = build_id_bfd_get (abfd);
+  if (build_id == nullptr)
+    return;
+
+  gdb_bfd_ref_ptr execbfd
+    = build_id_to_exec_bfd (build_id->size, build_id->data);
+
+  if (execbfd != nullptr)
+    {
+      exec_file_attach (bfd_get_filename (execbfd.get ()), from_tty);
+      symbol_file_add_main (bfd_get_filename (execbfd.get ()),
+			    symfile_add_flag (from_tty ? SYMFILE_VERBOSE : 0));
+    }
+}
+
 /* See gdbcore.h.  */
 
 void
@@ -373,8 +396,7 @@ core_target_open (const char *arg, int from_tty)
 
   gdb::unique_xmalloc_ptr<char> filename (tilde_expand (arg));
   if (!IS_ABSOLUTE_PATH (filename.get ()))
-    filename.reset (concat (current_directory, "/",
-			    filename.get (), (char *) NULL));
+    filename = gdb_abspath (filename.get ());
 
   flags = O_BINARY | O_LARGEFILE;
   if (write_files)
@@ -456,6 +478,9 @@ core_target_open (const char *arg, int from_tty)
 	switch_to_thread (thread);
     }
 
+  if (exec_bfd == nullptr)
+    locate_exec_from_corefile_build_id (core_bfd, from_tty);
+
   post_create_inferior (target, from_tty);
 
   /* Now go through the target stack looking for threads since there