* config/{*.mt, *.mh}: All target and host makefile fragment

	config files moved to an appropriate config/<cpu> subdirectory.
	* nm-*, xm-*, tm-*:  All native, host, and target files, which
	get linked to nm.h, xm.h, and tm.h respectively by configure,
	moved to appropriate config/<cpu> subdirectory.

9 files changed, 1056 insertions, 0 deletions

diff --git a/gdb/config/a29k/a29k-kern.mt b/gdb/config/a29k/a29k-kern.mt
new file mode 100644
index 0000000..0ecf14f
--- /dev/null
+++ b/gdb/config/a29k/a29k-kern.mt
@@ -0,0 +1,10 @@
+# Target: Remote AMD 29000 that runs Unix kernel on NYU Ultra3 processor board.
+# This builds a gdb that should run on a host (we use sun3os4) that
+# then communicates over the serial line to either an Adapt or MiniMon,
+# for use in debugging Unix kernels.
+# As compared to ordinary remote 29K debugging, this changes the register
+# numbering a bit, to hold kernel regs, and adds support for looking at
+# the upage.
+TDEPFILES= exec.o am29k-pinsn.o am29k-tdep.o remote-mm.o remote-adapt.o
+TM_FILE= tm-ultra3.h
+MT_CFLAGS = -DKERNEL_DEBUGGING -DNO_HIF_SUPPORT
diff --git a/gdb/config/a29k/a29k-udi.mt b/gdb/config/a29k/a29k-udi.mt
new file mode 100644
index 0000000..dba0705
--- /dev/null
+++ b/gdb/config/a29k/a29k-udi.mt
@@ -0,0 +1,5 @@
+# Target: AMD 29000 on EB29K board over a serial line.
+TDEPFILES= exec.o am29k-pinsn.o remote-udi.o am29k-tdep.o udip2soc.o udr.o
+TM_FILE= tm-29k.h
+# The following is for ../include/a.out.encap.h
+MT_CFLAGS = -Da29k -DREMOTE -DTARGET=TARGET_AM29K -DAMD_COFF
diff --git a/gdb/config/a29k/a29k.mt b/gdb/config/a29k/a29k.mt
new file mode 100644
index 0000000..29ae63b
--- /dev/null
+++ b/gdb/config/a29k/a29k.mt
@@ -0,0 +1,10 @@
+# Target: AMD 29000.
+# These defines should give you a gdb running on ? (sun3os4 if you like)
+# that will be able to communicate over a serial line with either an 
+# EB board (remote-eb.c),
+# Adapt (remote-adapt.c),
+# or a MiniMon debugger (remote-mm.c).
+# Or run native on an Ultracomputer.
+TDEPFILES= exec.o am29k-pinsn.o am29k-tdep.o remote-eb.o remote-mm.o remote-adapt.o 
+TM_FILE= tm-29k.h
+MT_CFLAGS = -DNO_HIF_SUPPORT
diff --git a/gdb/config/a29k/nm-ultra3.h b/gdb/config/a29k/nm-ultra3.h
new file mode 100644
index 0000000..e593729
--- /dev/null
+++ b/gdb/config/a29k/nm-ultra3.h
@@ -0,0 +1,26 @@
+/* Host definitions for GDB running on a 29k NYU Ultracomputer
+   Copyright (C) 1986, 1987, 1989, 1991, 1992 Free Software Foundation, Inc.
+   Contributed by David Wood (wood@lab.ultra.nyu.edu).
+
+This file is part of GDB.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+/* If we ever *do* end up using the standard fetch_inferior_registers,
+   this is the right value for U_REGS_OFFSET.  */
+#define	U_REGS_OFFSET	0
+
+/* Override copies of {fetch,store}_inferior_registers in infptrace.c.  */
+#define FETCH_INFERIOR_REGISTERS
diff --git a/gdb/config/a29k/tm-a29k.h b/gdb/config/a29k/tm-a29k.h
new file mode 100644
index 0000000..206f9d4
--- /dev/null
+++ b/gdb/config/a29k/tm-a29k.h
@@ -0,0 +1,709 @@
+/* Parameters for target machine of AMD 29000, for GDB, the GNU debugger.
+   Copyright 1990, 1991, 1993 Free Software Foundation, Inc.
+   Contributed by Cygnus Support.  Written by Jim Kingdon.
+
+This file is part of GDB.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+/* Parameters for an EB29K (a board which plugs into a PC and is
+   accessed through EBMON software running on the PC, which we
+   use as we'd use a remote stub (see remote-eb.c).
+
+   If gdb is ported to other 29k machines/systems, the
+   machine/system-specific parts should be removed from this file (a
+   la tm-68k.h).  */
+
+/* Byte order is configurable, but this machine runs big-endian.  */
+#define TARGET_BYTE_ORDER BIG_ENDIAN
+
+/* Floating point uses IEEE representations.  */
+#define IEEE_FLOAT
+
+/* Recognize our magic number.  */
+#define BADMAG(x) ((x).f_magic != 0572)
+
+/* Offset from address of function to start of its code.
+   Zero on most machines.  */
+
+#define FUNCTION_START_OFFSET 0
+
+/* Advance PC across any function entry prologue instructions
+   to reach some "real" code.  */
+
+#define SKIP_PROLOGUE(pc) \
+  { pc = skip_prologue (pc); }
+CORE_ADDR skip_prologue ();
+
+/* Immediately after a function call, return the saved pc.
+   Can't go through the frames for this because on some machines
+   the new frame is not set up until the new function executes
+   some instructions.  */
+
+#define SAVED_PC_AFTER_CALL(frame) (read_register (LR0_REGNUM))
+
+/* I'm not sure about the exact value of this, but based on looking
+   at the stack pointer when we get to main this seems to be right.
+
+   This is the register stack; We call it "CONTROL" in GDB for consistency
+   with Pyramid.  */
+#define CONTROL_END_ADDR 0x80200000
+
+/* Memory stack.  This is for the default register stack size, which is
+   only 0x800 bytes.  Perhaps we should let the user specify stack sizes
+   (and tell EBMON with the "ZS" command).  */
+#define STACK_END_ADDR 0x801ff800
+
+/* Stack grows downward.  */
+
+#define INNER_THAN <
+
+/* Stack must be aligned on 32-bit word boundaries.  */
+#define STACK_ALIGN(ADDR) (((ADDR) + 3) & ~3)
+
+/* Sequence of bytes for breakpoint instruction.  */
+/* ASNEQ 0x50, gr1, gr1
+   The trap number 0x50 is chosen arbitrarily.
+   We let the command line (or previously included files) override this
+   setting.  */
+#ifndef BREAKPOINT
+#if TARGET_BYTE_ORDER == BIG_ENDIAN
+#define BREAKPOINT {0x72, 0x50, 0x01, 0x01}
+#else /* Target is little-endian.  */
+#define BREAKPOINT {0x01, 0x01, 0x50, 0x72}
+#endif /* Target is little-endian.  */
+#endif /* BREAKPOINT */
+
+/* Amount PC must be decremented by after a breakpoint.
+   This is often the number of bytes in BREAKPOINT
+   but not always.  */
+
+#define DECR_PC_AFTER_BREAK 0
+
+/* Nonzero if instruction at PC is a return instruction.
+   On the 29k, this is a "jmpi l0" instruction.  */
+
+#define ABOUT_TO_RETURN(pc) \
+  ((read_memory_integer (pc, 4) & 0xff0000ff) == 0xc0000080)
+
+/* Return 1 if P points to an invalid floating point value.  */
+
+#define INVALID_FLOAT(p, len) 0   /* Just a first guess; not checked */
+
+/* Say how long (ordinary) registers are.  */
+
+#define REGISTER_TYPE long
+
+/* Allow the register declarations here to be overridden for remote
+   kernel debugging.  */
+#if !defined (REGISTER_NAMES)
+
+/* Number of machine registers */
+
+#define NUM_REGS 205
+
+/* Initializer for an array of names of registers.
+   There should be NUM_REGS strings in this initializer.
+
+   FIXME, add floating point registers and support here.
+
+   Also note that this list does not attempt to deal with kernel
+   debugging (in which the first 32 registers are gr64-gr95).  */
+
+#define REGISTER_NAMES \
+{"gr96", "gr97", "gr98", "gr99", "gr100", "gr101", "gr102", "gr103", "gr104", \
+ "gr105", "gr106", "gr107", "gr108", "gr109", "gr110", "gr111", "gr112", \
+ "gr113", "gr114", "gr115", "gr116", "gr117", "gr118", "gr119", "gr120", \
+ "gr121", "gr122", "gr123", "gr124", "gr125", "gr126", "gr127",		 \
+ "lr0", "lr1", "lr2", "lr3", "lr4", "lr5", "lr6", "lr7", "lr8", "lr9",   \
+ "lr10", "lr11", "lr12", "lr13", "lr14", "lr15", "lr16", "lr17", "lr18", \
+ "lr19", "lr20", "lr21", "lr22", "lr23", "lr24", "lr25", "lr26", "lr27", \
+ "lr28", "lr29", "lr30", "lr31", "lr32", "lr33", "lr34", "lr35", "lr36", \
+ "lr37", "lr38", "lr39", "lr40", "lr41", "lr42", "lr43", "lr44", "lr45", \
+ "lr46", "lr47", "lr48", "lr49", "lr50", "lr51", "lr52", "lr53", "lr54", \
+ "lr55", "lr56", "lr57", "lr58", "lr59", "lr60", "lr61", "lr62", "lr63", \
+ "lr64", "lr65", "lr66", "lr67", "lr68", "lr69", "lr70", "lr71", "lr72", \
+ "lr73", "lr74", "lr75", "lr76", "lr77", "lr78", "lr79", "lr80", "lr81", \
+ "lr82", "lr83", "lr84", "lr85", "lr86", "lr87", "lr88", "lr89", "lr90", \
+ "lr91", "lr92", "lr93", "lr94", "lr95", "lr96", "lr97", "lr98", "lr99", \
+ "lr100", "lr101", "lr102", "lr103", "lr104", "lr105", "lr106", "lr107", \
+ "lr108", "lr109", "lr110", "lr111", "lr112", "lr113", "lr114", "lr115", \
+ "lr116", "lr117", "lr118", "lr119", "lr120", "lr121", "lr122", "lr123", \
+ "lr124", "lr125", "lr126", "lr127",					 \
+  "AI0", "AI1", "AI2", "AI3", "AI4", "AI5", "AI6", "AI7", "AI8", "AI9",  \
+  "AI10", "AI11", "AI12", "AI13", "AI14", "AI15", "FP",			 \
+  "bp", "fc", "cr", "q",						 \
+  "vab", "ops", "cps", "cfg", "cha", "chd", "chc", "rbp", "tmc", "tmr",	 \
+  "pc0", "pc1", "pc2", "mmu", "lru", "fpe", "inte", "fps", "exo", "gr1",  \
+  "alu", "ipc", "ipa", "ipb" }
+
+/*
+ * Converts an sdb register number to an internal gdb register number.
+ * Currently under epi, gr96->0...gr127->31...lr0->32...lr127->159, or...
+ * 		  	gr64->0...gr95->31, lr0->32...lr127->159.
+ */
+#define SDB_REG_TO_REGNUM(value) \
+  (((value) >= 96 && (value) <= 127) ? ((value) - 96) : \
+   ((value) >= 128 && (value) <=  255) ? ((value) - 128 + LR0_REGNUM) : \
+   (value))
+
+/*
+ * Provide the processor register numbers of some registers that are
+ * expected/written in instructions that might change under different
+ * register sets.  Namely, gcc can compile (-mkernel-registers) so that
+ * it uses gr64-gr95 in stead of gr96-gr127.
+ */
+#define MSP_HW_REGNUM	125		/* gr125 */
+#define RAB_HW_REGNUM	126		/* gr126 */
+
+/* Convert Processor Special register #x to REGISTER_NAMES register # */
+#define SR_REGNUM(x) \
+  ((x) < 15  ? VAB_REGNUM + (x)					 \
+   : (x) >= 128 && (x) < 131 ? IPC_REGNUM + (x) - 128		 \
+   : (x) == 131 ? Q_REGNUM					 \
+   : (x) == 132 ? ALU_REGNUM					 \
+   : (x) >= 133 && (x) < 136 ? BP_REGNUM + (x) - 133		 \
+   : (x) >= 160 && (x) < 163 ? FPE_REGNUM + (x) - 160		 \
+   : (x) == 164 ? EXO_REGNUM                                     \
+   : (error ("Internal error in SR_REGNUM"), 0))
+#define GR96_REGNUM 0
+/* Define the return register separately, so it can be overridden for
+   kernel procedure calling conventions. */
+#define	RETURN_REGNUM	GR96_REGNUM
+#define GR1_REGNUM 200
+/* This needs to be the memory stack pointer, not the register stack pointer,
+   to make call_function work right.  */
+#define SP_REGNUM MSP_REGNUM
+#define FP_REGNUM 33 /* lr1 */
+/* Large Return Pointer (gr123).  */
+#define LRP_REGNUM (123 - 96 + GR96_REGNUM)
+/* Static link pointer (gr124).  */
+#define SLP_REGNUM (124 - 96 + GR96_REGNUM)
+/* Memory Stack Pointer (gr125).  */
+#define MSP_REGNUM (125 - 96 + GR96_REGNUM)
+/* Register allocate bound (gr126).  */
+#define RAB_REGNUM (126 - 96 + GR96_REGNUM)
+/* Register Free Bound (gr127).  */
+#define RFB_REGNUM (127 - 96 + GR96_REGNUM)
+/* Register Stack Pointer.  */
+#define RSP_REGNUM GR1_REGNUM
+#define LR0_REGNUM 32
+#define BP_REGNUM 177
+#define FC_REGNUM 178
+#define CR_REGNUM 179
+#define Q_REGNUM 180
+#define VAB_REGNUM 181
+#define OPS_REGNUM (VAB_REGNUM + 1)
+#define CPS_REGNUM (VAB_REGNUM + 2)
+#define CFG_REGNUM (VAB_REGNUM + 3)
+#define CHA_REGNUM (VAB_REGNUM + 4)
+#define CHD_REGNUM (VAB_REGNUM + 5)
+#define CHC_REGNUM (VAB_REGNUM + 6)
+#define RBP_REGNUM (VAB_REGNUM + 7)
+#define TMC_REGNUM (VAB_REGNUM + 8)
+#define TMR_REGNUM (VAB_REGNUM + 9)
+#define NPC_REGNUM (VAB_REGNUM + 10)  /* pc0 */
+#define PC_REGNUM  (VAB_REGNUM + 11)  /* pc1 */
+#define PC2_REGNUM (VAB_REGNUM + 12)
+#define MMU_REGNUM (VAB_REGNUM + 13)
+#define LRU_REGNUM (VAB_REGNUM + 14)
+#define FPE_REGNUM (VAB_REGNUM + 15)
+#define INTE_REGNUM (VAB_REGNUM + 16)
+#define FPS_REGNUM (VAB_REGNUM + 17)
+#define EXO_REGNUM (VAB_REGNUM + 18)
+/* gr1 is defined above as 200 = VAB_REGNUM + 19 */
+#define ALU_REGNUM (VAB_REGNUM + 20)
+#define PS_REGNUM  ALU_REGNUM
+#define IPC_REGNUM (VAB_REGNUM + 21)
+#define IPA_REGNUM (VAB_REGNUM + 22)
+#define IPB_REGNUM (VAB_REGNUM + 23)
+
+#endif	/* !defined(REGISTER_NAMES) */
+
+/* Total amount of space needed to store our copies of the machine's
+   register state, the array `registers'.  */
+#define REGISTER_BYTES (NUM_REGS * 4)
+
+/* Index within `registers' of the first byte of the space for
+   register N.  */
+#define REGISTER_BYTE(N)  ((N)*4)
+
+/* Number of bytes of storage in the actual machine representation
+   for register N.  */
+
+/* All regs are 4 bytes.  */
+
+#define REGISTER_RAW_SIZE(N) (4)
+
+/* Number of bytes of storage in the program's representation
+   for register N.  */
+
+/* All regs are 4 bytes.  */
+
+#define REGISTER_VIRTUAL_SIZE(N) (4)
+
+/* Largest value REGISTER_RAW_SIZE can have.  */
+
+#define MAX_REGISTER_RAW_SIZE (4)
+
+/* Largest value REGISTER_VIRTUAL_SIZE can have.  */
+
+#define MAX_REGISTER_VIRTUAL_SIZE (4)
+
+/* Nonzero if register N requires conversion
+   from raw format to virtual format.  */
+
+#define REGISTER_CONVERTIBLE(N) (0)
+
+/* Convert data from raw format for register REGNUM
+   to virtual format for register REGNUM.  */
+
+#define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,FROM,TO) \
+{ bcopy ((FROM), (TO), 4); }
+
+/* Convert data from virtual format for register REGNUM
+   to raw format for register REGNUM.  */
+
+#define REGISTER_CONVERT_TO_RAW(REGNUM,FROM,TO)	\
+{ bcopy ((FROM), (TO), 4); }
+
+/* Return the GDB type object for the "standard" data type
+   of data in register N.  */
+
+#define REGISTER_VIRTUAL_TYPE(N) \
+  (((N) == PC_REGNUM || (N) == LRP_REGNUM || (N) == SLP_REGNUM         \
+    || (N) == MSP_REGNUM || (N) == RAB_REGNUM || (N) == RFB_REGNUM     \
+    || (N) == GR1_REGNUM || (N) == FP_REGNUM || (N) == LR0_REGNUM       \
+    || (N) == NPC_REGNUM || (N) == PC2_REGNUM)                           \
+   ? lookup_pointer_type (builtin_type_void) : builtin_type_int)
+
+/* Store the address of the place in which to copy the structure the
+   subroutine will return.  This is called from call_function. */
+/* On the 29k the LRP points to the part of the structure beyond the first
+   16 words.  */
+#define STORE_STRUCT_RETURN(ADDR, SP) \
+  write_register (LRP_REGNUM, (ADDR) + 16 * 4);
+
+/* Should call_function allocate stack space for a struct return?  */
+/* On the 29k objects over 16 words require the caller to allocate space.  */
+#define USE_STRUCT_CONVENTION(gcc_p, type) (TYPE_LENGTH (type) > 16 * 4)
+
+/* Extract from an array REGBUF containing the (raw) register state
+   a function return value of type TYPE, and copy that, in virtual format,
+   into VALBUF.  */
+
+#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF)	      \
+  {    	       	       	       	       	       	       	       	       	   \
+    int reg_length = TYPE_LENGTH (TYPE);				   \
+    if (reg_length > 16 * 4)						   \
+      {									   \
+	reg_length = 16 * 4;						   \
+	read_memory (*((int *)(REGBUF) + LRP_REGNUM), (VALBUF) + 16 * 4,   \
+		     TYPE_LENGTH (TYPE) - 16 * 4);			   \
+      }									   \
+    bcopy (((int *)(REGBUF))+RETURN_REGNUM, (VALBUF), reg_length);	   \
+  }
+
+/* Write into appropriate registers a function return value
+   of type TYPE, given in virtual format.  */
+
+#define STORE_RETURN_VALUE(TYPE,VALBUF) \
+  {									  \
+    int reg_length = TYPE_LENGTH (TYPE);				  \
+    if (reg_length > 16 * 4)						  \
+      {									  \
+        reg_length = 16 * 4;						  \
+        write_memory (read_register (LRP_REGNUM),			  \
+		      (char *)(VALBUF) + 16 * 4,			  \
+		      TYPE_LENGTH (TYPE) - 16 * 4);			  \
+      }									  \
+    write_register_bytes (REGISTER_BYTE (RETURN_REGNUM), (char *)(VALBUF),  \
+			  TYPE_LENGTH (TYPE));				  \
+  }
+
+/* The am29k user's guide documents well what the stacks look like.
+   But what isn't so clear there is how this interracts with the
+   symbols, or with GDB.
+   In the following saved_msp, saved memory stack pointer (which functions
+   as a memory frame pointer), means either
+   a register containing the memory frame pointer or, in the case of
+   functions with fixed size memory frames (i.e. those who don't use
+   alloca()), the result of the calculation msp + msize.
+
+   LOC_ARG, LOC_LOCAL - For GCC, these are relative to saved_msp.
+     For high C, these are relative to msp (making alloca impossible).
+   LOC_REGISTER, LOC_REGPARM - The register number is the number at the
+     time the function is running (after the prologue), or in the case
+     of LOC_REGPARM, may be a register number in the range 160-175.
+
+   The compilers do things like store an argument into memory, and then put out
+   a LOC_ARG for it, or put it into global registers and put out a
+   LOC_REGPARM.  Thus is it important to execute the first line of
+   code (i.e. the line of the open brace, i.e. the prologue) of a function
+   before trying to print arguments or anything.
+
+   The following diagram attempts to depict what is going on in memory
+   (see also the _am29k user's guide_) and also how that interacts with
+   GDB frames.  We arbitrarily pick fci->frame to point the same place
+   as the register stack pointer; since we set it ourself in
+   INIT_EXTRA_FRAME_INFO, and access it only through the FRAME_*
+   macros, it doesn't really matter exactly how we
+   do it.  However, note that FRAME_FP is used in two ways in GDB:
+   (1) as a "magic cookie" which uniquely identifies frames (even over
+   calls to the inferior), (2) (in PC_IN_CALL_DUMMY [ON_STACK])
+   as the value of SP_REGNUM before the dummy frame was pushed.  These
+   two meanings would be incompatible for the 29k if we defined
+   CALL_DUMMY_LOCATION == ON_STACK (but we don't, so don't worry about it).
+   Also note that "lr1" below, while called a frame pointer
+   in the user's guide, has only one function:  To determine whether
+   registers need to be filled in the function epilogue.
+
+   Consider the code:
+              < call bar>
+       	loc1: . . .
+        bar:  sub gr1,gr1,rsize_b
+	      . . .
+	      add mfp,msp,0
+	      sub msp,msp,msize_b
+	      . . .
+	      < call foo >
+	loc2: . . .
+        foo:  sub gr1,gr1,rsize_f
+	      . . .
+	      add mfp,msp,0
+	      sub msp,msp,msize_f
+	      . . .
+        loc3: < suppose the inferior stops here >
+
+                   memory stack      register stack
+		   |           |     |____________|
+		   |           |     |____loc1____|
+	  +------->|___________|     |            |   ^
+	  |        | ^         |     |  locals_b  |   |
+	  |        | |         |     |____________|   |
+	  |        | |         |     |            |   | rsize_b
+	  |        | | msize_b |     | args_to_f  |   |
+	  |        | |         |     |____________|   |
+	  |        | |         |     |____lr1_____|   V
+	  |        | V         |     |____loc2____|<----------------+
+	  |   +--->|___________|<---------mfp     |   ^             |
+	  |   |    | ^         |     |  locals_f  |   |             |
+	  |   |    | | msize_f |     |____________|   |             |
+	  |   |    | |         |     |            |   | rsize_f     |
+	  |   |    | V         |     |   args     |   |             |
+	  |   |    |___________|<msp |____________|   |             |
+	  |   |                      |_____lr1____|   V             |
+	  |   |                      |___garbage__| <- gr1 <----+   |
+ 	  |   |                 		                |   |
+          |   |                 		                |   |
+	  |   |	       	       	     pc=loc3	                |   |
+	  |   |         		      	                |   |
+	  |   |         		      	                |   |
+	  |   |            frame cache	      	                |   |
+          |   |       |_________________|     	                |   |
+          |   |       |rsize=rsize_b    |     	                |   |
+          |   |       |msize=msize_b    |     	                |   |
+          +---|--------saved_msp        |     	                |   |
+              |       |frame------------------------------------|---+
+              |       |pc=loc2          |                       |
+              |       |_________________|                       |
+              |       |rsize=rsize_f    |                       |
+              |       |msize=msize_f    |                       |
+              +--------saved_msp        |                       |
+                      |frame------------------------------------+
+                      |pc=loc3          |
+                      |_________________|
+
+   So, is that sufficiently confusing?  Welcome to the 29000.
+   Notes:
+   * The frame for foo uses a memory frame pointer but the frame for
+     bar does not.  In the latter case the saved_msp is
+     computed by adding msize to the saved_msp of the
+     next frame.
+   * msize is in the frame cache only for high C's sake.  */
+
+void read_register_stack ();
+long read_register_stack_integer ();
+
+#define EXTRA_FRAME_INFO  \
+  CORE_ADDR saved_msp;    \
+  unsigned int rsize;     \
+  unsigned int msize;	  \
+  unsigned char flags;
+
+/* Bits for flags in EXTRA_FRAME_INFO */
+#define TRANSPARENT	0x1		/* This is a transparent frame */
+#define MFP_USED	0x2		/* A memory frame pointer is used */
+
+/* Because INIT_FRAME_PC gets passed fromleaf, that's where we init
+   not only ->pc and ->frame, but all the extra stuff, when called from
+   get_prev_frame_info, that is.  */
+#define INIT_EXTRA_FRAME_INFO(fromleaf, fci)  init_extra_frame_info(fci)
+void init_extra_frame_info ();
+
+#define INIT_FRAME_PC(fromleaf, fci) init_frame_pc(fromleaf, fci)
+void init_frame_pc ();
+
+
+/* FRAME_CHAIN takes a FRAME
+   and produces the frame's chain-pointer.
+
+   However, if FRAME_CHAIN_VALID returns zero,
+   it means the given frame is the outermost one and has no caller.  */
+
+/* On the 29k, the nominal address of a frame is the address on the
+   register stack of the return address (the one next to the incoming
+   arguments, not down at the bottom so nominal address == stack pointer).
+
+   GDB expects "nominal address" to equal contents of FP_REGNUM,
+   at least when it comes time to create the innermost frame.
+   However, that doesn't work for us, so when creating the innermost
+   frame we set ->frame ourselves in INIT_EXTRA_FRAME_INFO.  */
+
+/* These are mostly dummies for the 29k because INIT_FRAME_PC
+   sets prev->frame instead.  */
+#define FRAME_CHAIN(thisframe) ((thisframe)->frame + (thisframe)->rsize)
+
+/* Determine if the frame has a 'previous' and back-traceable frame. */
+#define FRAME_IS_UNCHAINED(frame)	((frame)->flags & TRANSPARENT)
+
+/* Find the previous frame of a transparent routine.
+ * For now lets not try and trace through a transparent routine (we might 
+ * have to assume that all transparent routines are traps).
+ */
+#define FIND_PREV_UNCHAINED_FRAME(frame)	0
+
+/* Define other aspects of the stack frame.  */
+
+/* A macro that tells us whether the function invocation represented
+   by FI does not have a frame on the stack associated with it.  If it
+   does not, FRAMELESS is set to 1, else 0.  */
+#define FRAMELESS_FUNCTION_INVOCATION(FI, FRAMELESS) \
+  (FRAMELESS) = frameless_look_for_prologue(FI)
+
+/* Saved pc (i.e. return address).  */
+#define FRAME_SAVED_PC(fraim) \
+  (read_register_stack_integer ((fraim)->frame + (fraim)->rsize, 4))
+
+/* Local variables (i.e. LOC_LOCAL) are on the memory stack, with their
+   offsets being relative to the memory stack pointer (high C) or
+   saved_msp (gcc).  */
+
+#define FRAME_LOCALS_ADDRESS(fi) frame_locals_address (fi)
+extern CORE_ADDR frame_locals_address ();
+
+/* Return number of args passed to a frame.
+   Can return -1, meaning no way to tell.  */
+/* While we could go the effort of finding the tags word and getting
+   the argcount field from it,
+   (1) It only counts arguments in registers, i.e. the first 16 words
+       of arguments
+   (2) It gives the number of arguments the function was declared with
+       not how many it was called with (or some variation, like all 16
+       words for varadic functions).  This makes argcount pretty much
+       redundant with -g info, even for varadic functions.
+   So don't bother.  */
+#define FRAME_NUM_ARGS(numargs, fi) ((numargs) = -1)
+
+#define FRAME_ARGS_ADDRESS(fi) FRAME_LOCALS_ADDRESS (fi)
+
+/* Return number of bytes at start of arglist that are not really args.  */
+
+#define FRAME_ARGS_SKIP 0
+
+/* Provide our own get_saved_register.  HAVE_REGISTER_WINDOWS is insufficient
+   because registers get renumbered on the 29k without getting saved.  */
+
+#define GET_SAVED_REGISTER
+
+/* Call function stuff.  */
+
+/* The dummy frame looks like this (see also the general frame picture
+   above):
+
+					register stack
+
+	                	      |                |  frame for function
+               	                      |   locals_sproc |  executing at time
+                                      |________________|  of call_function.
+                     		      |	               |  We must not disturb
+                     		      |	args_out_sproc |  it.
+        memory stack 		      |________________|
+                     		      |____lr1_sproc___|<-+
+       |            |		      |__retaddr_sproc_|  | <-- gr1 (at start)
+       |____________|<-msp 0 <-----------mfp_dummy_____|  |
+       |            |  (at start)     |  save regs     |  |
+       | arg_slop   |		      |  pc0,pc1       |  |
+       | (16 words) |		      | gr96-gr124     |  |
+       |____________|<-msp 1--after   | sr160-sr162    |  |
+       |            | PUSH_DUMMY_FRAME| sr128-sr135    |  |
+       | struct ret |                 |________________|  |
+       | 17+        |                 |                |  | 
+       |____________|<- lrp           | args_out_dummy |  |
+       | struct ret |		      |  (16 words)    |  |
+       | 16         |		      |________________|  |
+       | (16 words) |                 |____lr1_dummy___|--+
+       |____________|<- msp 2--after  |_retaddr_dummy__|<- gr1 after
+       |            | struct ret      |                |   PUSH_DUMMY_FRAME
+       | margs17+   | area allocated  |  locals_inf    |
+       |            |                 |________________|    called
+       |____________|<- msp 4--when   |                |    function's
+       |            |   inf called    | args_out_inf   |    frame (set up
+       | margs16    |                 |________________|    by called
+       | (16 words) |                 |_____lr1_inf____|    function).
+       |____________|<- msp 3--after  |       .        |
+       |            |   args pushed   |       .        |
+       |            |	              |       .        |
+                                      |                |
+
+   arg_slop: This area is so that when the call dummy adds 16 words to
+      the msp, it won't end up larger than mfp_dummy (it is needed in the
+      case where margs and struct_ret do not add up to at least 16 words).
+   struct ret:  This area is allocated by GDB if the return value is more
+      than 16 words.  struct ret_16 is not used on the 29k.
+   margs:  Pushed by GDB.  The call dummy copies the first 16 words to
+      args_out_dummy.
+   retaddr_sproc:  Contains the PC at the time we call the function.
+      set by PUSH_DUMMY_FRAME and read by POP_FRAME.
+   retaddr_dummy:  This points to a breakpoint instruction in the dummy.  */
+
+/* Rsize for dummy frame, in bytes.  */
+
+/* Bytes for outgoing args, lr1, and retaddr.  */
+#define DUMMY_ARG (2 * 4 + 16 * 4)
+
+/* Number of special registers (sr128-) to save.  */
+#define DUMMY_SAVE_SR128 8
+/* Number of special registers (sr160-) to save.  */
+#define DUMMY_SAVE_SR160 3
+/* Number of general (gr96- or gr64-) registers to save.  */
+#define DUMMY_SAVE_GREGS 29
+
+#define DUMMY_FRAME_RSIZE \
+(4 /* mfp_dummy */     	  \
+ + 2 * 4  /* pc0, pc1 */  \
+ + DUMMY_SAVE_GREGS * 4   \
+ + DUMMY_SAVE_SR160 * 4	  \
+ + DUMMY_SAVE_SR128 * 4	  \
+ + DUMMY_ARG		  \
+ + 4 /* pad to doubleword */ )
+
+/* Push an empty stack frame, to record the current PC, etc.  */
+
+#define PUSH_DUMMY_FRAME push_dummy_frame()
+extern void push_dummy_frame ();
+
+/* Discard from the stack the innermost frame,
+   restoring all saved registers.  */
+
+#define POP_FRAME pop_frame()
+extern void pop_frame ();
+
+/* This sequence of words is the instructions
+   mtsrim cr, 15
+   loadm 0, 0, lr2, msp     ; load first 16 words of arguments into registers
+   add msp, msp, 16 * 4     ; point to the remaining arguments
+ CONST_INSN:
+   const lr0,inf		; (replaced by       half of target addr)
+   consth lr0,inf		; (replaced by other half of target addr)
+   calli lr0, lr0 
+   aseq 0x40,gr1,gr1   ; nop
+ BREAKPT_INSN:
+   asneq 0x50,gr1,gr1  ; breakpoint	(replaced by local breakpoint insn)
+   */
+
+#if TARGET_BYTE_ORDER == HOST_BYTE_ORDER
+#define BS(const)	const
+#else
+#define	BS(const)	(((const) & 0xff) << 24) |	\
+			(((const) & 0xff00) << 8) |	\
+			(((const) & 0xff0000) >> 8) |	\
+			(((const) & 0xff000000) >> 24)
+#endif
+
+/* Position of the "const" and blkt instructions within CALL_DUMMY in bytes. */
+#define CONST_INSN (3 * 4)
+#define BREAKPT_INSN (7 * 4)
+#define CALL_DUMMY {	\
+		BS(0x0400870f),\
+		BS(0x36008200|(MSP_HW_REGNUM)), \
+		BS(0x15000040|(MSP_HW_REGNUM<<8)|(MSP_HW_REGNUM<<16)), \
+		BS(0x03ff80ff),	\
+		BS(0x02ff80ff),	\
+		BS(0xc8008080),	\
+		BS(0x70400101),	\
+		BS(0x72500101)}
+#define CALL_DUMMY_LENGTH (8 * 4)
+
+#define CALL_DUMMY_START_OFFSET 0  /* Start execution at beginning of dummy */
+
+/* Helper macro for FIX_CALL_DUMMY.  WORDP is a long * which points to a
+   word in target byte order; bits 0-7 and 16-23 of *WORDP are replaced with
+   bits 0-7 and 8-15 of DATA (which is in host byte order).  */
+
+#if TARGET_BYTE_ORDER == BIG_ENDIAN
+#define STUFF_I16(WORDP, DATA) \
+  { \
+    *((char *)(WORDP) + 3) = ((DATA) & 0xff);\
+    *((char *)(WORDP) + 1) = (((DATA) >> 8) & 0xff);\
+  }
+#else /* Target is little endian.  */
+#define STUFF_I16(WORDP, DATA) \
+  {
+    *(char *)(WORDP) = ((DATA) & 0xff);
+    *((char *)(WORDP) + 2) = (((DATA) >> 8) & 0xff);
+  }
+#endif /* Target is little endian.  */
+
+/* Insert the specified number of args and function address
+   into a call sequence of the above form stored at DUMMYNAME.  */
+
+/* Currently this stuffs in the address of the function that we are calling.
+   Since different 29k systems use different breakpoint instructions, it
+   also stuffs BREAKPOINT in the right place (to avoid having to
+   duplicate CALL_DUMMY in each tm-*.h file).  */
+
+#define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, args, type, gcc_p)   \
+  {\
+    STUFF_I16((char *)dummyname + CONST_INSN, fun);		\
+    STUFF_I16((char *)dummyname + CONST_INSN + 4, fun >> 16);	\
+  /* FIXME  memcpy ((char *)(dummyname) + BREAKPT_INSN, break_insn, 4); */ \
+  }
+
+/* 29k architecture has separate data & instruction memories -- wired to
+   different pins on the chip -- and can't execute the data memory.
+   Also, there should be space after text_end;
+   we won't get a SIGSEGV or scribble on data space.  */
+
+#define CALL_DUMMY_LOCATION AFTER_TEXT_END
+
+/* Because of this, we need (as a kludge) to know the addresses of the
+   text section.  */
+
+#define	NEED_TEXT_START_END
+
+/* How to translate register numbers in the .stab's into gdb's internal register
+   numbers.  We don't translate them, but we warn if an invalid register
+   number is seen.  Note that FIXME, we use the value "sym" as an implicit
+   argument in printing the error message.  It happens to be available where
+   this macro is used.  (This macro definition appeared in a late revision
+   of gdb-3.91.6 and is not well tested.  Also, it should be a "complaint".) */
+
+#define	STAB_REG_TO_REGNUM(num) \
+	(((num) > LR0_REGNUM + 127) \
+	   ? fprintf(stderr, 	\
+		"Invalid register number %d in symbol table entry for %s\n", \
+	         (num), SYMBOL_SOURCE_NAME (sym)), (num)	\
+	   : (num))
diff --git a/gdb/config/a29k/tm-ultra3.h b/gdb/config/a29k/tm-ultra3.h
new file mode 100644
index 0000000..1603d8b
--- /dev/null
+++ b/gdb/config/a29k/tm-ultra3.h
@@ -0,0 +1,226 @@
+/* Parameters for NYU Ultracomputer 29000 target, for GDB, the GNU debugger.
+   Copyright 1990, 1991 Free Software Foundation, Inc.
+   Contributed by David Wood @ New York University (wood@nyu.edu). 
+   
+This file is part of GDB.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+/* This file includes tm-29k.h, but predefines REGISTER_NAMES and
+   related macros.  The file supports a 29k running our flavor of
+   Unix on our Ultra3 PE Boards.  */
+
+/* Byte order is configurable, but this machine runs big-endian.  */
+#define TARGET_BYTE_ORDER BIG_ENDIAN
+
+/* Initializer for an array of names of registers.
+   There should be NUM_REGS strings in this initializer.
+ */
+#define NUM_REGS   (EXO_REGNUM + 1)	
+
+#define REGISTER_NAMES { 						 \
+ "gr1",									 \
+ "gr64", "gr65", "gr66", "gr67", "gr68", "gr69", "gr70", "gr71", "gr72", \
+ "gr73", "gr74", "gr75", "gr76", "gr77", "gr78", "gr79", "gr80", "gr81", \
+ "gr82", "gr83", "gr84", "gr85", "gr86", "gr87", "gr88", "gr89", "gr90", \
+ "gr91", "gr92", "gr93", "gr94", "gr95",				 \
+ "gr96", "gr97", "gr98", "gr99", "gr100", "gr101", "gr102", "gr103", "gr104", \
+ "gr105", "gr106", "gr107", "gr108", "gr109", "gr110", "gr111", "gr112", \
+ "gr113", "gr114", "gr115", "gr116", "gr117", "gr118", "gr119", "gr120", \
+ "gr121", "gr122", "gr123", "gr124", "gr125", "gr126", "gr127",		 \
+ "lr0", "lr1", "lr2", "lr3", "lr4", "lr5", "lr6", "lr7", "lr8", "lr9",   \
+ "lr10", "lr11", "lr12", "lr13", "lr14", "lr15", "lr16", "lr17", "lr18", \
+ "lr19", "lr20", "lr21", "lr22", "lr23", "lr24", "lr25", "lr26", "lr27", \
+ "lr28", "lr29", "lr30", "lr31", "lr32", "lr33", "lr34", "lr35", "lr36", \
+ "lr37", "lr38", "lr39", "lr40", "lr41", "lr42", "lr43", "lr44", "lr45", \
+ "lr46", "lr47", "lr48", "lr49", "lr50", "lr51", "lr52", "lr53", "lr54", \
+ "lr55", "lr56", "lr57", "lr58", "lr59", "lr60", "lr61", "lr62", "lr63", \
+ "lr64", "lr65", "lr66", "lr67", "lr68", "lr69", "lr70", "lr71", "lr72", \
+ "lr73", "lr74", "lr75", "lr76", "lr77", "lr78", "lr79", "lr80", "lr81", \
+ "lr82", "lr83", "lr84", "lr85", "lr86", "lr87", "lr88", "lr89", "lr90", \
+ "lr91", "lr92", "lr93", "lr94", "lr95", "lr96", "lr97", "lr98", "lr99", \
+ "lr100", "lr101", "lr102", "lr103", "lr104", "lr105", "lr106", "lr107", \
+ "lr108", "lr109", "lr110", "lr111", "lr112", "lr113", "lr114", "lr115", \
+ "lr116", "lr117", "lr118", "lr119", "lr120", "lr121", "lr122", "lr123", \
+ "lr124", "lr125", "lr126", "lr127",					 \
+ "vab", "ops", "cps", "cfg", "cha", "chd", "chc", "rbp", "tmc", "tmr",	 \
+ "pc0", "pc1", "pc2", "mmu", "lru",					 \
+ "ipc", "ipa", "ipb", "q", "alu", "bp", "fc", "cr",			 \
+ "fpe", "int", "fps", "exo" }
+
+
+#ifdef KERNEL_DEBUGGING
+# define	PADDR_U_REGNUM	22		/* gr86 */
+# define	RETURN_REGNUM	GR64_REGNUM	
+#else
+# define	RETURN_REGNUM	GR96_REGNUM	
+#endif	/* KERNEL_DEBUGGING */
+
+
+/* Should rename all GR96_REGNUM to RETURN_REGNUM */ 
+#define GR1_REGNUM 	(0)
+#define GR64_REGNUM	1
+#define GR96_REGNUM 	(GR64_REGNUM + 32)
+/* This needs to be the memory stack pointer, not the register stack pointer,
+   to make call_function work right.  */
+#define SP_REGNUM 	MSP_REGNUM
+
+#define FP_REGNUM 	(LR0_REGNUM + 1)	/* lr1 */
+/* Large Return Pointer  */
+#define LRP_REGNUM (123 - 96 + RETURN_REGNUM)
+/* Static link pointer   */
+#define SLP_REGNUM (124 - 96 + RETURN_REGNUM)
+/* Memory Stack Pointer.  */
+#define MSP_REGNUM (125 - 96 + RETURN_REGNUM)
+/* Register allocate bound.  */
+#define RAB_REGNUM (126 - 96 + RETURN_REGNUM)
+/* Register Free Bound.  */
+#define RFB_REGNUM (127 - 96 + RETURN_REGNUM)
+/* Register Stack Pointer.  */
+#define RSP_REGNUM GR1_REGNUM
+#define LR0_REGNUM ( 32 +  GR96_REGNUM) 
+
+/* Protected Special registers */
+#define VAB_REGNUM (LR0_REGNUM +  128)
+#define OPS_REGNUM (VAB_REGNUM + 1)  
+#define CPS_REGNUM (VAB_REGNUM + 2)  
+#define CFG_REGNUM (VAB_REGNUM + 3)  
+#define CHA_REGNUM (VAB_REGNUM + 4)  
+#define CHD_REGNUM (VAB_REGNUM + 5)  
+#define CHC_REGNUM (VAB_REGNUM + 6)  
+#define RBP_REGNUM (VAB_REGNUM + 7)  
+#define TMC_REGNUM (VAB_REGNUM + 8)  
+#define TMR_REGNUM (VAB_REGNUM + 9)  
+#define NPC_REGNUM (VAB_REGNUM + 10)	/* pc0 */
+#define PC_REGNUM  (VAB_REGNUM + 11)  	/* pc1 */
+#define PC2_REGNUM (VAB_REGNUM + 12)  	/* pc2 */
+#define MMU_REGNUM (VAB_REGNUM + 13)
+#define LRU_REGNUM (VAB_REGNUM + 14)
+	/* Register sequence gap */
+/* Unprotected Special registers */
+#define IPC_REGNUM (LRU_REGNUM + 1) 
+#define IPA_REGNUM (IPC_REGNUM + 1) 
+#define IPB_REGNUM (IPC_REGNUM + 2) 
+#define Q_REGNUM   (IPC_REGNUM + 3) 
+#define ALU_REGNUM (IPC_REGNUM + 4) 
+#define PS_REGNUM  ALU_REGNUM
+#define BP_REGNUM  (IPC_REGNUM + 5) 
+#define FC_REGNUM  (IPC_REGNUM + 6) 
+#define CR_REGNUM  (IPC_REGNUM + 7) 
+	/* Register sequence gap */
+#define FPE_REGNUM (CR_REGNUM  + 1) 
+#define INT_REGNUM (FPE_REGNUM + 1) 
+#define FPS_REGNUM (FPE_REGNUM + 2) 
+	/* Register sequence gap */
+#define EXO_REGNUM (FPS_REGNUM + 1) 
+
+/* Special register #x.  */
+#define SR_REGNUM(x) \
+  ((x) < 15  ? VAB_REGNUM + (x)					 \
+   : (x) >= 128 && (x) < 136 ? IPC_REGNUM + (x-128)		 \
+   : (x) >= 160 && (x) < 163 ? FPE_REGNUM + (x-160)		 \
+   : (x) == 164 ? EXO_REGNUM                                     \
+   : (error ("Internal error in SR_REGNUM"), 0))
+
+#ifndef KERNEL_DEBUGGING
+/*
+ * This macro defines the register numbers (from REGISTER_NAMES) that
+ * are effectively unavailable to the user through ptrace().  It allows 
+ * us to include the whole register set in REGISTER_NAMES (inorder to 
+ * better support remote debugging).  If it is used in 
+ * fetch/store_inferior_registers() gdb will not complain about I/O errors 
+ * on fetching these registers.  If all registers in REGISTER_NAMES
+ * are available, then return false (0).
+ */
+#define CANNOT_STORE_REGISTER(regno)		\
+                  (((regno)>=GR64_REGNUM && (regno)<GR64_REGNUM+32) ||	\
+                   ((regno)==VAB_REGNUM) ||	\
+		   ((regno)==OPS_REGNUM) ||	\
+                   ((regno)>=CFG_REGNUM && (regno)<=TMR_REGNUM)     ||	\
+                   ((regno)==MMU_REGNUM) ||	\
+		   ((regno)==LRU_REGNUM) ||	\
+                   ((regno)>=ALU_REGNUM) ||	\
+                   ((regno)==CR_REGNUM)  ||	\
+		   ((regno)==EXO_REGNUM))
+#define CANNOT_FETCH_REGISTER(regno)	CANNOT_STORE_REGISTER(regno)
+#endif /* KERNEL_DEBUGGING */
+
+/*
+ * Converts an sdb register number to an internal gdb register number.
+ * Currently under gcc, gr96->0...gr128->31...lr0->32...lr127->159, or...
+ * 		  	gr64->0...gr95->31, lr0->32...lr127->159.
+ */
+#define SDB_REG_TO_REGNUM(value) (((value)<32) ? ((value)+RETURN_REGNUM) : \
+		 		                 ((value)-32+LR0_REGNUM))
+
+#ifdef KERNEL_DEBUGGING
+  /* ublock virtual address as defined in our sys/param.h */
+  /* FIXME: Should get this from sys/param.h */
+# define UVADDR	((32*0x100000)-8192)    
+#endif
+
+/*
+ * Are we in sigtramp(), needed in infrun.c.  Specific to ultra3, because
+ * we take off the leading '_'.
+ */
+#if !defined(KERNEL_DEBUGGING)
+#ifdef SYM1
+# define IN_SIGTRAMP(pc, name) (name && STREQ ("sigtramp", name))
+#else
+        Need to define IN_SIGTRAMP() for sym2.
+#endif
+#endif /* !KERNEL_DEBUGGING */
+
+#include "a29k/tm-29k.h"
+
+/**** The following are definitions that override those in tm-29k.h ****/
+
+/* This sequence of words is the instructions
+   mtsrim cr, 15
+   loadm 0, 0, lr2, msp     ; load first 16 words of arguments into registers
+   add msp, msp, 16 * 4     ; point to the remaining arguments
+  CONST_INSN:
+   const gr96,inf
+   consth gr96,inf
+   calli lr0, gr96
+   aseq 0x40,gr1,gr1   ; nop
+   asneq 0x50,gr1,gr1  ; breakpoint
+   When KERNEL_DEBUGGIN is defined, msp -> gr93, gr96 -> gr64,
+                                    7d  -> 5d,    60  -> 40
+   */
+
+/* Position of the "const" instruction within CALL_DUMMY in bytes.  */
+#undef CALL_DUMMY
+#if TARGET_BYTE_ORDER == HOST_BYTE_ORDER
+#ifdef KERNEL_DEBUGGING /* gr96 -> gr64 */
+#  define CALL_DUMMY {0x0400870f, 0x3600825d, 0x155d5d40, 0x03ff40ff,    \
+                    0x02ff40ff, 0xc8008040, 0x70400101, 0x72500101}
+#else
+#  define CALL_DUMMY {0x0400870f, 0x3600827d, 0x157d7d40, 0x03ff60ff,    \
+                    0x02ff60ff, 0xc8008060, 0x70400101, 0x72500101}
+#endif /* KERNEL_DEBUGGING */
+#else /* Byte order differs.  */
+  you lose
+#endif /* Byte order differs.  */
+
+#if !defined(KERNEL_DEBUGGING)
+# ifdef SYM1
+#  undef  DECR_PC_AFTER_BREAK
+#  define DECR_PC_AFTER_BREAK 0	/* Sym1 kernel does the decrement */
+# else
+    ->"ULTRA3 running other than sym1 OS"!;
+# endif
+#endif /* !KERNEL_DEBUGGING */
+
diff --git a/gdb/config/a29k/ultra3.mh b/gdb/config/a29k/ultra3.mh
new file mode 100644
index 0000000..5bcfb4c
--- /dev/null
+++ b/gdb/config/a29k/ultra3.mh
@@ -0,0 +1,9 @@
+# Host: NYU Ultracomputer (AMD 29000 running Unix)
+CC=u3cc
+MUNCH_DEFINE="MUNCH_NM=u3nm"
+XDEPFILES= ultra3-xdep.o 
+XM_FILE= xm-ultra3.h
+NAT_FILE= nm-ultra3.h
+NATDEPFILES= exec.o infptrace.o inftarg.o fork-child.o ultra3-nat.o
+MH_CFLAGS = -DSYM1
+XM_CLIBS = -lsysv -ljobs -ltermlib 
diff --git a/gdb/config/a29k/ultra3.mt b/gdb/config/a29k/ultra3.mt
new file mode 100644
index 0000000..840b79d
--- /dev/null
+++ b/gdb/config/a29k/ultra3.mt
@@ -0,0 +1,5 @@
+# Target: AMD 29000 running Unix on New York Univerisity processor board.
+TDEPFILES= am29k-pinsn.o am29k-tdep.o
+TM_FILE= tm-ultra3.h
+# SYM1 is some OS they have.
+MT_CFLAGS = -DSYM1
diff --git a/gdb/config/a29k/xm-ultra3.h b/gdb/config/a29k/xm-ultra3.h
new file mode 100644
index 0000000..0abf68d
--- /dev/null
+++ b/gdb/config/a29k/xm-ultra3.h
@@ -0,0 +1,56 @@
+/* Host definitions for GDB running on a 29k NYU Ultracomputer
+   Copyright (C) 1986, 1987, 1989, 1991 Free Software Foundation, Inc.
+   Contributed by David Wood (wood@lab.ultra.nyu.edu).
+
+This file is part of GDB.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+/* Here at NYU we have what we call an ULTRA3 PE board.  So
+   ifdefs for ULTRA3 are my doing.  At this point in time,
+   I don't know of any other Unixi running on the 29k.  */
+
+#define HOST_BYTE_ORDER BIG_ENDIAN
+
+#define HAVE_WAIT_STRUCT
+
+#ifndef L_SET
+# define L_SET   0 /* set the seek pointer */
+# define L_INCR  1 /* increment the seek pointer */
+# define L_XTND  2 /* extend the file size */
+#endif
+
+#ifndef O_RDONLY
+# define O_RDONLY 0
+# define O_WRONLY 1
+# define O_RDWR	  2
+#endif
+
+#ifndef F_OK
+# define R_OK 4
+# define W_OK 2
+# define X_OK 1
+# define F_OK 0
+#endif
+
+/* Get rid of any system-imposed stack limit if possible */
+
+#define	SET_STACK_LIMIT_HUGE
+
+/* System doesn't provide siginterrupt().  */
+#define	NO_SIGINTERRUPT
+
+/* System uses a `short' to hold a process group ID.  */
+#define	SHORT_PGRP