Johns release

1 files changed, 586 insertions, 0 deletions

diff --git a/gdb/tm-sparc.h b/gdb/tm-sparc.h
new file mode 100644
index 0000000..b3316da
--- /dev/null
+++ b/gdb/tm-sparc.h
@@ -0,0 +1,586 @@
+/* Parameters for target machine of Sun 4, for GDB, the GNU debugger.
+   Copyright (C) 1986, 1987, 1989 Free Software Foundation, Inc.
+   Contributed by Michael Tiemann (tiemann@mcc.com)
+This file is part of GDB.
+
+GDB 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 1, or (at your option)
+any later version.
+
+GDB 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 GDB; see the file COPYING.  If not, write to
+the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+#define TARGET_BYTE_ORDER BIG_ENDIAN
+
+/* Floating point is IEEE compatible.  */
+#define IEEE_FLOAT
+
+/* Define this if the C compiler puts an underscore at the front
+   of external names before giving them to the linker.  */
+
+#define NAMES_HAVE_UNDERSCORE
+
+/* Debugger information will be in DBX format.  */
+
+#define READ_DBX_FORMAT
+
+/* When passing a structure to a function, Sun cc passes the address
+   in a register, not the structure itself.  It (under SunOS4) creates
+   two symbols, so we get a LOC_ARG saying the address is on the stack
+   (a lie, and a serious one since we don't know which register to
+   use), and a LOC_REGISTER saying that the struct is in a register
+   (sort of a lie, but fixable with REG_STRUCT_HAS_ADDR).
+
+   This still doesn't work if the argument is not one passed in a
+   register (i.e. it's the 7th or later argument).  */
+#define REG_STRUCT_HAS_ADDR(gcc_p) (!(gcc_p))
+#define STRUCT_ARG_SYM_GARBAGE(gcc_p) (!(gcc_p))
+
+/* If Pcc says that a parameter is a short, it's a short.  This is
+   because the parameter does get passed in in a register as an int,
+   but pcc puts it onto the stack frame as a short (not nailing
+   whatever else might be there.  I'm not sure that I consider this
+   swift.  Sigh.)
+
+   No, don't do this.  The problem here is that pcc says that the
+   argument is in the upper half of the word reserved on the stack,
+   but puts it in the lower half.  */
+/* #define BELIEVE_PCC_PROMOTION 1 */
+/* OK, I've added code to dbxread.c to deal with this case.  */
+#define BELIEVE_PCC_PROMOTION_TYPE
+
+/* 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); }
+extern 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.  */
+
+/* On the Sun 4 under SunOS, the compile will leave a fake insn which
+   encodes the structure size being returned.  If we detect such
+   a fake insn, step past it.  */
+
+#define PC_ADJUST(pc) ((read_memory_integer (pc + 8, 4) & 0xfffffe00) == 0 ? \
+		       pc+12 : pc+8)
+
+#define SAVED_PC_AFTER_CALL(frame) PC_ADJUST (read_register (RP_REGNUM))
+
+/* Address of the end of stack space.  We get this from the system
+   include files. */
+#include <sys/types.h>
+#include <machine/vmparam.h>
+#define STACK_END_ADDR USRSTACK
+
+#define INNER_THAN <
+
+/* Stack has strict alignment.  */
+
+#define STACK_ALIGN(ADDR) (((ADDR)+7)&-8)
+
+/* Sequence of bytes for breakpoint instruction.  */
+
+#define BREAKPOINT {0x91, 0xd0, 0x20, 0x01}
+
+/* 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.  */
+/* For SPARC, this is either a "jmpl %o7+8,%g0" or "jmpl %i7+8,%g0".
+
+   Note: this does not work for functions returning structures under SunOS.  */
+#define ABOUT_TO_RETURN(pc) \
+  ((read_memory_integer (pc, 4)|0x00040000) == 0x81c7e008)
+
+/* 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
+
+/* Number of machine registers */
+
+#define NUM_REGS 72
+
+/* Initializer for an array of names of registers.
+   There should be NUM_REGS strings in this initializer.  */
+
+#define REGISTER_NAMES  \
+{ "g0", "g1", "g2", "g3", "g4", "g5", "g6", "g7",	\
+  "o0", "o1", "o2", "o3", "o4", "o5", "sp", "o7",	\
+  "l0", "l1", "l2", "l3", "l4", "l5", "l6", "l7",	\
+  "i0", "i1", "i2", "i3", "i4", "i5", "fp", "i7",	\
+								\
+  "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",	\
+  "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15",	\
+  "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",	\
+  "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31",	\
+                                                                \
+  "y", "psr", "wim", "tbr", "pc", "npc", "fpsr", "cpsr" };
+
+/* Register numbers of various important registers.
+   Note that some of these values are "real" register numbers,
+   and correspond to the general registers of the machine,
+   and some are "phony" register numbers which are too large
+   to be actual register numbers as far as the user is concerned
+   but do serve to get the desired values when passed to read_register.  */
+
+#define	G0_REGNUM 0             /* %g0 */
+#define	G1_REGNUM 1		/* %g1 */
+#define O0_REGNUM 8		/* %o0 */
+#define	SP_REGNUM 14		/* Contains address of top of stack, \
+				   which is also the bottom of the frame.  */
+#define	RP_REGNUM 15		/* Contains return address value, *before* \
+				   any windows get switched.  */
+#define	O7_REGNUM 15		/* Last local reg not saved on stack frame */
+#define	L0_REGNUM 16		/* First local reg that's saved on stack frame
+				   rather than in machine registers */
+#define	I0_REGNUM 24		/* %i0 */
+#define	FP_REGNUM 30		/* Contains address of executing stack frame */
+#define	I7_REGNUM 31		/* Last local reg saved on stack frame */
+#define	FP0_REGNUM 32		/* Floating point register 0 */
+#define	Y_REGNUM 64		/* Temp register for multiplication, etc.  */
+#define	PS_REGNUM 65		/* Contains processor status */
+#define	WIM_REGNUM 66		/* Window Invalid Mask (not really supported) */
+#define	TBR_REGNUM 67		/* Trap Base Register (not really supported) */
+#define	PC_REGNUM 68		/* Contains program counter */
+#define	NPC_REGNUM 69           /* Contains next PC */
+#define	FPS_REGNUM 70		/* Floating point status register */
+#define	CPS_REGNUM 71		/* Coprocessor status register */
+
+/* Total amount of space needed to store our copies of the machine's
+   register state, the array `registers'.  */
+#define REGISTER_BYTES (32*4+32*4+8*4)
+
+/* Index within `registers' of the first byte of the space for
+   register N.  */
+/* ?? */
+#define REGISTER_BYTE(N)  ((N)*4)
+
+/* The SPARC processor has register windows.  */
+
+#define HAVE_REGISTER_WINDOWS
+
+/* Is this register part of the register window system?  A yes answer
+   implies that 1) The name of this register will not be the same in
+   other frames, and 2) This register is automatically "saved" (out
+   registers shifting into ins counts) upon subroutine calls and thus
+   there is no need to search more than one stack frame for it. */
+
+#define REGISTER_IN_WINDOW_P(regnum)	\
+  ((regnum) >= 8 && (regnum) < 32)
+
+/* Number of bytes of storage in the actual machine representation
+   for register N.  */
+
+/* On the SPARC, all regs are 4 bytes.  */
+
+#define REGISTER_RAW_SIZE(N) (4)
+
+/* Number of bytes of storage in the program's representation
+   for register N.  */
+
+/* On the SPARC, all regs are 4 bytes.  */
+
+#define REGISTER_VIRTUAL_SIZE(N) (4)
+
+/* Largest value REGISTER_RAW_SIZE can have.  */
+
+#define MAX_REGISTER_RAW_SIZE 8
+
+/* Largest value REGISTER_VIRTUAL_SIZE can have.  */
+
+#define MAX_REGISTER_VIRTUAL_SIZE 8
+
+/* 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) < 32 ? builtin_type_int : (N) < 64 ? builtin_type_float : \
+  builtin_type_int)
+
+/* Writing to %g0 is a noop (not an error or exception or anything like
+   that, however).  */
+
+#define CANNOT_STORE_REGISTER(regno) ((regno) == G0_REGNUM)
+
+/* Store the address of the place in which to copy the structure the
+   subroutine will return.  This is called from call_function. */
+
+#define STORE_STRUCT_RETURN(ADDR, SP) \
+  { target_write_memory ((SP)+(16*4), (char *)&(ADDR), 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)	      \
+  {      	       	       	       	       	       	       	           \
+    if (TYPE_CODE (TYPE) == TYPE_CODE_FLT)		       		   \
+      {							       		   \
+	bcopy (((int *)(REGBUF))+FP0_REGNUM,		       		   \
+	       (VALBUF), TYPE_LENGTH(TYPE));		       		   \
+      }							       		   \
+    else						       		   \
+      bcopy (((int *)(REGBUF))+8, (VALBUF), TYPE_LENGTH (TYPE));           \
+  }
+
+/* Write into appropriate registers a function return value
+   of type TYPE, given in virtual format.  */
+/* On sparc, values are returned in register %o0.  */
+#define STORE_RETURN_VALUE(TYPE,VALBUF) \
+  {    	       	       	       	       	       	       	       	       	     \
+    if (TYPE_CODE (TYPE) == TYPE_CODE_FLT)				     \
+      /* Floating-point values are returned in the register pair */          \
+      /* formed by %f0 and %f1 (doubles are, anyway).  */                    \
+      write_register_bytes (REGISTER_BYTE (FP0_REGNUM), (VALBUF),	     \
+			    TYPE_LENGTH (TYPE));			     \
+    else								     \
+      /* Other values are returned in register %o0.  */                      \
+      write_register_bytes (REGISTER_BYTE (O0_REGNUM), (VALBUF),	     \
+			    TYPE_LENGTH (TYPE));  \
+  }
+
+/* Extract from an array REGBUF containing the (raw) register state
+   the address in which a function should return its structure value,
+   as a CORE_ADDR (or an expression that can be used as one).  */
+
+#define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) \
+  (read_memory_integer (((int *)(REGBUF))[SP_REGNUM]+(16*4), 4))
+
+
+/* Describe the pointer in each stack frame to the previous stack frame
+   (its caller).  */
+
+/* I don't know whether this will work for cross-debugging, even if you
+   do get the right reg.h.  */
+#include <machine/reg.h>
+
+#define GET_RWINDOW_REG(FRAME, REG) \
+  (read_memory_integer ((CORE_ADDR)&((struct rwindow *)FRAME)->REG, 4))
+
+/* 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.  */
+
+/* In the case of the Sun 4, the frame-chain's nominal address
+   is held in the frame pointer register.
+
+   On the Sun4, the frame (in %fp) is %sp for the previous frame.
+   From the previous frame's %sp, we can find the previous frame's
+   %fp: it is in the save area just above the previous frame's %sp.
+
+   If we are setting up an arbitrary frame, we'll need to know where
+   it ends.  Hence the following.  This part of the frame cache
+   structure should be checked before it is assumed that this frame's
+   bottom is in the stack pointer.
+
+   If there isn't a frame below this one, the bottom of this frame is
+   in the stack pointer.
+
+   If there is a frame below this one, and the frame pointers are
+   identical, it's a leaf frame and the bottoms are the same also.
+
+   Otherwise the bottom of this frame is the top of the next frame.  */
+
+#define EXTRA_FRAME_INFO	FRAME_ADDR bottom;
+#define INIT_EXTRA_FRAME_INFO(fci)  \
+  (fci)->bottom =					\
+   ((fci)->next ?					\
+    ((fci)->frame == (fci)->next_frame ?		\
+     (fci)->next->bottom : (fci)->next->frame) :	\
+    read_register (SP_REGNUM));
+
+#define FRAME_CHAIN(thisframe) \
+   GET_RWINDOW_REG ((thisframe)->frame, rw_in[6])
+
+#define FRAME_CHAIN_VALID(chain, thisframe) \
+  (chain != 0 && (outside_startup_file (FRAME_SAVED_PC (thisframe))))
+
+#define FRAME_CHAIN_COMBINE(chain, thisframe) (chain)
+
+/* 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)
+
+/* Where is the PC for a specific frame */
+
+#define FRAME_SAVED_PC(FRAME) frame_saved_pc (FRAME)
+CORE_ADDR frame_saved_pc ();
+
+/* If the argument is on the stack, it will be here.  */
+#define FRAME_ARGS_ADDRESS(fi) ((fi)->frame)
+
+#define FRAME_STRUCT_ARGS_ADDRESS(fi) ((fi)->frame)
+
+#define FRAME_LOCALS_ADDRESS(fi) ((fi)->frame)
+
+/* Set VAL to the number of args passed to frame described by FI.
+   Can set VAL to -1, meaning no way to tell.  */
+
+/* We can't tell how many args there are
+   now that the C compiler delays popping them.  */
+#define FRAME_NUM_ARGS(val,fi) (val = -1)
+
+/* Return number of bytes at start of arglist that are not really args.  */
+
+#define FRAME_ARGS_SKIP 68
+
+/* Put here the code to store, into a struct frame_saved_regs,
+   the addresses of the saved registers of frame described by FRAME_INFO.
+   The actual code is in sparc-tdep.c so we can debug it sanely.  */
+
+#define FRAME_FIND_SAVED_REGS(fi, frame_saved_regs)    	    \
+	sparc_frame_find_saved_regs ((fi), &(frame_saved_regs))
+extern void sparc_frame_find_saved_regs ();
+
+/* Things needed for making the inferior call functions.  */
+/*
+ * First of all, let me give my opinion of what the DUMMY_FRAME
+ * actually looks like.
+ *
+ *               |                                 |
+ *               |                                 |
+ *               + - - - - - - - - - - - - - - - - +<-- fp (level 0)
+ *               |                                 |
+ *               |                                 |
+ *               |                                 |
+ *               |                                 |
+ *               |  Frame of innermost program     |
+ *               |           function              |
+ *               |                                 |
+ *               |                                 |
+ *               |                                 |
+ *               |                                 |
+ *               |                                 |
+ *               |---------------------------------|<-- sp (level 0), fp (c)
+ *               |                                 |
+ *     DUMMY     |             fp0-31              |
+ *               |                                 |
+ *               |             ------              |<-- fp - 0x80
+ *     FRAME     |              g0-7               |<-- fp - 0xa0
+ *               |              i0-7               |<-- fp - 0xc0
+ *               |             other               |<-- fp - 0xe0
+ *               |               ?                 |
+ *               |               ?                 |
+ *               |---------------------------------|<-- sp' = fp - 0x140
+ *               |                                 |
+ * xcution start |                                 |
+ * sp' + 0x94 -->|        CALL_DUMMY (x code)      |
+ *               |                                 |
+ *               |                                 |
+ *               |---------------------------------|<-- sp'' = fp - 0x200
+ *               |  align sp to 8 byte boundary    |
+ *               |     ==> args to fn <==          |
+ *  Room for     |                                 |
+ * i & l's + agg | CALL_DUMMY_STACK_ADJUST = 0x0x44|
+ *               |---------------------------------|<-- final sp (variable)
+ *               |                                 |
+ *               |   Where function called will    |
+ *               |           build frame.          |
+ *               |                                 |
+ *               |                                 |
+ *
+ *   I understand everything in this picture except what the space
+ * between fp - 0xe0 and fp - 0x140 is used for.  Oh, and I don't
+ * understand why there's a large chunk of CALL_DUMMY that never gets
+ * executed (its function is superceeded by PUSH_DUMMY_FRAME; they
+ * are designed to do the same thing).
+ *
+ *   PUSH_DUMMY_FRAME saves the registers above sp' and pushes the
+ * register file stack down one.
+ *
+ *   call_function then writes CALL_DUMMY, pushes the args onto the
+ * stack, and adjusts the stack pointer.
+ *
+ *   run_stack_dummy then starts execution (in the middle of
+ * CALL_DUMMY, as directed by call_function).
+ */
+
+/* Push an empty stack frame, to record the current PC, etc.  */
+
+#define PUSH_DUMMY_FRAME	sparc_push_dummy_frame ()
+#define POP_FRAME	sparc_pop_frame ()
+
+void sparc_push_dummy_frame (), sparc_pop_frame ();
+/* This sequence of words is the instructions
+
+   save %sp,-0x140,%sp
+   std	%f30,[%fp-0x08]
+   std	%f28,[%fp-0x10]
+   std	%f26,[%fp-0x18]
+   std	%f24,[%fp-0x20]
+   std	%f22,[%fp-0x28]
+   std	%f20,[%fp-0x30]
+   std	%f18,[%fp-0x38]
+   std	%f16,[%fp-0x40]
+   std	%f14,[%fp-0x48]
+   std	%f12,[%fp-0x50]
+   std	%f10,[%fp-0x58]
+   std	%f8,[%fp-0x60]
+   std	%f6,[%fp-0x68]
+   std	%f4,[%fp-0x70]
+   std	%f2,[%fp-0x78]
+   std	%f0,[%fp-0x80]
+   std	%g6,[%fp-0x88]
+   std	%g4,[%fp-0x90]
+   std	%g2,[%fp-0x98]
+   std	%g0,[%fp-0xa0]
+   std	%i6,[%fp-0xa8]
+   std	%i4,[%fp-0xb0]
+   std	%i2,[%fp-0xb8]
+   std	%i0,[%fp-0xc0]
+   nop ! stcsr	[%fp-0xc4]
+   nop ! stfsr	[%fp-0xc8]
+   nop ! wr	%npc,[%fp-0xcc]
+   nop ! wr	%pc,[%fp-0xd0]
+   rd	%tbr,%o0
+   st	%o0,[%fp-0xd4]
+   rd	%wim,%o1
+   st	%o0,[%fp-0xd8]
+   rd	%psr,%o0
+   st	%o0,[%fp-0xdc]
+   rd	%y,%o0
+   st	%o0,[%fp-0xe0]
+
+     /..* The arguments are pushed at this point by GDB;
+	no code is needed in the dummy for this.
+	The CALL_DUMMY_START_OFFSET gives the position of
+	the following ld instruction.  *../
+
+   ld	[%sp+0x58],%o5
+   ld	[%sp+0x54],%o4
+   ld	[%sp+0x50],%o3
+   ld	[%sp+0x4c],%o2
+   ld	[%sp+0x48],%o1
+   call 0x00000000
+   ld	[%sp+0x44],%o0
+   nop
+   ta 1
+   nop
+
+   note that this is 192 bytes, which is a multiple of 8 (not only 4) bytes.
+   note that the `call' insn is a relative, not an absolute call.
+   note that the `nop' at the end is needed to keep the trap from
+        clobbering things (if NPC pointed to garbage instead).
+
+We actually start executing at the `sethi', since the pushing of the
+registers (as arguments) is done by PUSH_DUMMY_FRAME.  If this were
+real code, the arguments for the function called by the CALL would be
+pushed between the list of ST insns and the CALL, and we could allow
+it to execute through.  But the arguments have to be pushed by GDB
+after the PUSH_DUMMY_FRAME is done, and we cannot allow these ST
+insns to be performed again, lest the registers saved be taken for
+arguments.  */
+
+#define CALL_DUMMY { 0x9de3bee0, 0xfd3fbff8, 0xf93fbff0, 0xf53fbfe8,	\
+		     0xf13fbfe0, 0xed3fbfd8, 0xe93fbfd0, 0xe53fbfc8,	\
+		     0xe13fbfc0, 0xdd3fbfb8, 0xd93fbfb0, 0xd53fbfa8,	\
+		     0xd13fbfa0, 0xcd3fbf98, 0xc93fbf90, 0xc53fbf88,	\
+		     0xc13fbf80, 0xcc3fbf78, 0xc83fbf70, 0xc43fbf68,	\
+		     0xc03fbf60, 0xfc3fbf58, 0xf83fbf50, 0xf43fbf48,	\
+		     0xf03fbf40, 0x01000000, 0x01000000, 0x01000000,	\
+		     0x01000000, 0x91580000, 0xd027bf50, 0x93500000,	\
+		     0xd027bf4c, 0x91480000, 0xd027bf48, 0x91400000,	\
+		     0xd027bf44, 0xda03a058, 0xd803a054, 0xd603a050,	\
+		     0xd403a04c, 0xd203a048, 0x40000000, 0xd003a044,	\
+		     0x01000000, 0x91d02001, 0x01000000, 0x01000000}
+
+#define CALL_DUMMY_LENGTH 192
+
+#define CALL_DUMMY_START_OFFSET 148
+
+#define CALL_DUMMY_STACK_ADJUST 68
+
+/* Insert the specified number of args and function address
+   into a call sequence of the above form stored at DUMMYNAME.
+
+   For structs and unions, if the function was compiled with Sun cc,
+   it expects 'unimp' after the call.  But gcc doesn't use that
+   (twisted) convention.  So leave a nop there for gcc (FIX_CALL_DUMMY
+   can assume it is operating on a pristine CALL_DUMMY, not one that
+   has already been customized for a different function).  */
+
+#define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, args, type, gcc_p)     \
+{									\
+  *(int *)((char *) dummyname+168) = (0x40000000|((fun-(pc+168))>>2));	\
+  if (!gcc_p                                                            \
+      && (TYPE_CODE (type) == TYPE_CODE_STRUCT				\
+	  || TYPE_CODE (type) == TYPE_CODE_UNION))	                \
+    *(int *)((char *) dummyname+176) = (TYPE_LENGTH (type) & 0x1fff);	\
+}
+
+
+/* Sparc has no reliable single step ptrace call */
+
+#define NO_SINGLE_STEP 1
+extern void single_step ();
+
+/* We need two arguments (in general) to the "info frame" command.
+   Note that the definition of this macro implies that there exists a
+   function "setup_arbitrary_frame" in mach-dep.c */
+
+#define FRAME_SPECIFICATION_DYADIC
+
+/* To print every pair of float registers as a double, we use this hook.  */
+
+#define	PRINT_REGISTER_HOOK(regno)	\
+  if (((regno) >= FP0_REGNUM)		\
+   && ((regno) <  FP0_REGNUM + 32)	\
+   && (0 == (regno & 1))) {		\
+    char doublereg[8];		/* two float regs */	\
+    if (!read_relative_register_raw_bytes (i  , doublereg  )	\
+     && !read_relative_register_raw_bytes (i+1, doublereg+4)) {	\
+      printf("\t");			\
+      print_floating (doublereg, builtin_type_double, stdout);	\
+    }					\
+  }
+