[PATCH 1/3] Move core_bfd to program space

[Pedro Alves <palves@redhat.com>]

From: Tom Tromey <tromey@redhat.com>

This moves the core_bfd global to be a field of the program space.  It
then replaces core_bfd with a macro to avoid a massive patch -- the
same approach taken for various other program space fields.

This is a basic transformation for multi-target work.

yyyy-mm-dd  Tom Tromey  <tromey@redhat.com>
	    Pedro Alves  <tromey@redhat.com>

	* corefile.c (core_bfd): Remove.
	* gdbcore.h (core_bfd): Now a macro.
	* progspace.h (struct program_space) <cbfd>: New field.
---
 gdb/corefile.c  | 4 ----
 gdb/gdbcore.h   | 2 +-
 gdb/progspace.h | 3 +++
 3 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/gdb/corefile.c b/gdb/corefile.c
index 114de83640..e0c7540140 100644
--- a/gdb/corefile.c
+++ b/gdb/corefile.c
@@ -49,10 +49,6 @@ static hook_type *exec_file_extra_hooks;	/* Array of additional
 						   hooks.  */
 static int exec_file_hook_count = 0;		/* Size of array.  */
 
-/* Binary file diddling handle for the core file.  */
-
-bfd *core_bfd = NULL;
-
 \f
 
 /* Backward compatability with old way of specifying core files.  */
diff --git a/gdb/gdbcore.h b/gdb/gdbcore.h
index 401c213d48..d06ccc3507 100644
--- a/gdb/gdbcore.h
+++ b/gdb/gdbcore.h
@@ -133,7 +133,7 @@ extern void specify_exec_file_hook (void (*hook) (const char *filename));
 
 /* Binary File Diddler for the core file.  */
 
-extern bfd *core_bfd;
+#define core_bfd (current_program_space->cbfd)
 
 /* corelow.c target.  It is never NULL after GDB initialization.  */
 
diff --git a/gdb/progspace.h b/gdb/progspace.h
index 67c0a240da..835fcfdd5d 100644
--- a/gdb/progspace.h
+++ b/gdb/progspace.h
@@ -157,6 +157,9 @@ struct program_space
      It needs to be freed by xfree.  It is not NULL iff EBFD is not NULL.  */
   char *pspace_exec_filename = NULL;
 
+  /* Binary file diddling handle for the core file.  */
+  bfd *cbfd = NULL;
+
   /* The address space attached to this program space.  More than one
      program space may be bound to the same address space.  In the
      traditional unix-like debugging scenario, this will usually
-- 
2.14.3