X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=gdb%2Fdummy-frame.h;h=7ce7973f0a28910b1e17f5ec8988ca1ca448d42e;hb=121d8485df3bd59f8a74752e6ef3b7123b482b9e;hp=d85fcfbe10a8f7cb281fa23003fbbee8e588c7de;hpb=f18c5a73039533b1d9e2f4f2044ec39627bbf8b4;p=deliverable%2Fbinutils-gdb.git

diff --git a/gdb/dummy-frame.h b/gdb/dummy-frame.h
index d85fcfbe10..7ce7973f0a 100644
--- a/gdb/dummy-frame.h
+++ b/gdb/dummy-frame.h
@@ -1,6 +1,6 @@
 /* Code dealing with dummy stack frames, for GDB, the GNU debugger.
 
-   Copyright 2002 Free Software Foundation, Inc.
+   Copyright 2002, 2004 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -24,48 +24,28 @@
 
 struct frame_info;
 struct regcache;
+struct frame_unwind;
+struct frame_id;
 
-/* GENERIC DUMMY FRAMES
-  
-   The following code serves to maintain the dummy stack frames for
-   inferior function calls (ie. when gdb calls into the inferior via
-   call_function_by_hand).  This code saves the machine state before
-   the call in host memory, so we must maintain an independent stack
-   and keep it consistant etc.  I am attempting to make this code
-   generic enough to be used by many targets.
- 
-   The cheapest and most generic way to do CALL_DUMMY on a new target
-   is probably to define CALL_DUMMY to be empty, CALL_DUMMY_LENGTH to
-   zero, and CALL_DUMMY_LOCATION to AT_ENTRY.  Then you must remember
-   to define PUSH_RETURN_ADDRESS, because no call instruction will be
-   being executed by the target.  Also FRAME_CHAIN_VALID as
-   generic_{file,func}_frame_chain_valid and FIX_CALL_DUMMY as
-   generic_fix_call_dummy.  */
+/* Push the information needed to identify, and unwind from, a dummy
+   frame onto the dummy frame stack.  */
 
-/* Assuming that FRAME is a dummy, return a register value for the
-   previous frame.  */
+/* NOTE: cagney/2004-08-02: This interface will eventually need to be
+   parameterized with the caller's thread - that will allow per-thread
+   dummy-frame stacks and, hence, per-thread inferior function
+   calls.  */
 
-extern void dummy_frame_register_unwind (struct frame_info *frame,
-					 void **unwind_cache,
-					 int regnum,
-					 int *optimized,
-					 enum lval_type *lvalp,
-					 CORE_ADDR *addrp,
-					 int *realnump,
-					 void *valuep);
+/* NOTE: cagney/2004-08-02: In the case of ABIs using push_dummy_code
+   containing more than one instruction, this interface many need to
+   be expanded so that it knowns the lower/upper extent of the dummy
+   frame's code.  */
 
-/* Assuming that FRAME is a dummy, return the resume address for the
-   previous frame.  */
+extern void dummy_frame_push (struct regcache *regcache,
+			      const struct frame_id *dummy_id);
 
-extern CORE_ADDR dummy_frame_pc_unwind (struct frame_info *frame,
-					void **unwind_cache);
+/* If the PC falls in a dummy frame, return a dummy frame
+   unwinder.  */
 
-/* Return the regcache that belongs to the dummy-frame identifed by PC
-   and FP, or NULL if no such frame exists.  */
-/* FIXME: cagney/2002-11-08: The function only exists because of
-   deprecated_generic_get_saved_register.  Eliminate that function and
-   this, to, can go.  */
+extern const struct frame_unwind *const dummy_frame_unwind;
 
-extern struct regcache *generic_find_dummy_frame (CORE_ADDR pc,
-						  CORE_ADDR fp);
 #endif /* !defined (DUMMY_FRAME_H)  */