[PATCH v10 05/28] frame: add frame_id_build_unavailable_stack_special

[Markus Metzger <markus.t.metzger@intel.com>]

Add a function to build a frame_id for a frame with unavailable stack
and with a special identifier address.

Reviewed-by:  Pedro Alves

2014-01-14  Markus Metzger  <markus.t.metzger@intel.com>

	* frame.h (frame_id_build_unavailable_stack_special): New.
	* frame.c (frame_id_build_unavailable_stack_special): New.


---
 gdb/frame.c | 16 ++++++++++++++++
 gdb/frame.h |  8 ++++++++
 2 files changed, 24 insertions(+)

diff --git a/gdb/frame.c b/gdb/frame.c
index 10d486c..b72d5e4 100644
--- a/gdb/frame.c
+++ b/gdb/frame.c
@@ -528,6 +528,22 @@ frame_id_build_unavailable_stack (CORE_ADDR code_addr)
   return id;
 }
 
+/* See frame.h.  */
+
+struct frame_id
+frame_id_build_unavailable_stack_special (CORE_ADDR code_addr,
+					  CORE_ADDR special_addr)
+{
+  struct frame_id id = null_frame_id;
+
+  id.stack_status = FID_STACK_UNAVAILABLE;
+  id.code_addr = code_addr;
+  id.code_addr_p = 1;
+  id.special_addr = special_addr;
+  id.special_addr_p = 1;
+  return id;
+}
+
 struct frame_id
 frame_id_build (CORE_ADDR stack_addr, CORE_ADDR code_addr)
 {
diff --git a/gdb/frame.h b/gdb/frame.h
index f7e46d5..e451a93 100644
--- a/gdb/frame.h
+++ b/gdb/frame.h
@@ -193,6 +193,14 @@ extern struct frame_id frame_id_build_special (CORE_ADDR stack_addr,
    address is set to indicate a wild card.  */
 extern struct frame_id frame_id_build_unavailable_stack (CORE_ADDR code_addr);
 
+/* Construct a frame ID representing a frame where the stack address
+   exists, but is unavailable.  CODE_ADDR is the frame's constant code
+   address (typically the entry point).  SPECIAL_ADDR is the special
+   identifier address.  */
+extern struct frame_id
+  frame_id_build_unavailable_stack_special (CORE_ADDR code_addr,
+					    CORE_ADDR special_addr);
+
 /* Construct a wild card frame ID.  The parameter is the frame's constant
    stack address (typically the outer-bound).  The code address as well
    as the special identifier address are set to indicate wild cards.  */
-- 
1.8.3.1