[patch/ob] Delete FRAME_CHAIN_COMBINE

[Andrew Cagney <ac131313 at cygnus dot com>]

FYI,

Turned out to not be used.  Committed.

Andrew
2002-04-14  Andrew Cagney  <ac131313@redhat.com>

	* config/pa/tm-hppa.h (FRAME_CHAIN_COMBINE): Delete macro.
	* blockframe.c (FRAME_CHAIN_COMBINE): Delete macro.
	(get_prev_frame): Do not call FRAME_CHAIN_COMBINE.

Index: doc/ChangeLog
2002-04-14  Andrew Cagney  <ac131313@redhat.com>

	* gdbint.texinfo (Target Architecture Definition): Remove
	FRAME_CHAIN_COMBINE.

Index: blockframe.c
===================================================================
RCS file: /cvs/src/src/gdb/blockframe.c,v
retrieving revision 1.23
diff -u -r1.23 blockframe.c
--- blockframe.c	10 Apr 2002 22:14:02 -0000	1.23
+++ blockframe.c	14 Apr 2002 13:32:48 -0000
@@ -303,12 +303,6 @@
     return 0;
 }
 
-/* Default a few macros that people seldom redefine.  */
-
-#ifndef FRAME_CHAIN_COMBINE
-#define	FRAME_CHAIN_COMBINE(chain, thisframe) (chain)
-#endif
-
 /* Return a structure containing various interesting information
    about the frame that called NEXT_FRAME.  Returns NULL
    if there is no such frame.  */
@@ -379,7 +373,6 @@
       address = FRAME_CHAIN (next_frame);
       if (!FRAME_CHAIN_VALID (address, next_frame))
 	return 0;
-      address = FRAME_CHAIN_COMBINE (address, next_frame);
     }
   if (address == 0)
     return 0;
Index: config/pa/tm-hppa.h
===================================================================
RCS file: /cvs/src/src/gdb/config/pa/tm-hppa.h,v
retrieving revision 1.14
diff -u -r1.14 tm-hppa.h
--- config/pa/tm-hppa.h	29 Jan 2002 04:42:43 -0000	1.14
+++ config/pa/tm-hppa.h	14 Apr 2002 13:32:50 -0000
@@ -376,15 +376,8 @@
 /* Describe the pointer in each stack frame to the previous stack frame
    (its caller).  */
 
-/* FRAME_CHAIN takes a frame's nominal address
-   and produces the frame's chain-pointer.
-
-   FRAME_CHAIN_COMBINE takes the chain pointer and the frame's nominal address
-   and produces the nominal address of the caller frame.
-
-   However, if FRAME_CHAIN_VALID returns zero,
-   it means the given frame is the outermost one and has no caller.
-   In that case, FRAME_CHAIN_COMBINE is not used.  */
+/* FRAME_CHAIN takes a frame's nominal address and produces the
+   frame's chain-pointer.  */
 
 /* In the case of the PA-RISC, the frame's nominal address
    is the address of a 4-byte word containing the calling frame's
@@ -395,8 +388,6 @@
 
 extern int hppa_frame_chain_valid (CORE_ADDR, struct frame_info *);
 #define FRAME_CHAIN_VALID(chain, thisframe) hppa_frame_chain_valid (chain, thisframe)
-
-#define FRAME_CHAIN_COMBINE(chain, thisframe) (chain)
 
 /* Define other aspects of the stack frame.  */
 
Index: doc/gdbint.texinfo
===================================================================
RCS file: /cvs/src/src/gdb/doc/gdbint.texinfo,v
retrieving revision 1.74
diff -u -r1.74 gdbint.texinfo
--- doc/gdbint.texinfo	13 Apr 2002 15:56:42 -0000	1.74
+++ doc/gdbint.texinfo	14 Apr 2002 13:33:03 -0000
@@ -2935,12 +2935,6 @@
 @findex FRAME_CHAIN
 Given @var{frame}, return a pointer to the calling frame.
 
-@item FRAME_CHAIN_COMBINE(@var{chain}, @var{frame})
-@findex FRAME_CHAIN_COMBINE
-Define this to take the frame chain pointer and the frame's nominal
-address and produce the nominal address of the caller's frame.
-Presently only defined for HP PA.
-
 @item FRAME_CHAIN_VALID(@var{chain}, @var{thisframe})
 @findex FRAME_CHAIN_VALID
 Define this to be an expression that returns zero if the given frame is