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+/* Definitions of target machine for GNU compiler.  Clipper version.
+   Copyright (C) 1987, 88, 91, 93-95, 1996 Free Software Foundation, Inc.
+   Contributed by Holger Teutsch (holger@hotbso.rhein-main.de)
+
+This file is part of GNU CC.
+
+GNU CC 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, or (at your option)
+any later version.
+
+GNU CC 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 GNU CC; see the file COPYING.  If not, write to
+the Free Software Foundation, 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+extern struct rtx_def *clipper_builtin_saveregs ();
+extern int clipper_frame_size ();
+
+/* Print subsidiary information on the compiler version in use.  */
+
+#define TARGET_VERSION fprintf (stderr, " (clipper)");
+
+/* Run-time compilation parameters selecting different hardware subsets.  */
+
+extern int target_flags;
+
+/* Macros used in the machine description to test the flags.  */
+
+/* Macro to define tables used to set the flags.
+   This is a list in braces of pairs in braces,
+   each pair being { "NAME", VALUE }
+   where VALUE is the bits to set or minus the bits to clear.
+   An empty string NAME is used to identify the default VALUE.  */
+
+#define TARGET_SWITCHES		\
+  { { "c400", 1 },		\
+    { "c300", -1 },		\
+    { "", TARGET_DEFAULT} }
+
+#define TARGET_C400 1
+#define TARGET_C300 0
+
+/* Default target_flags if no switches specified.  */
+
+#ifndef TARGET_DEFAULT
+#define TARGET_DEFAULT TARGET_C300
+#endif
+
+/* Show that we can debug generated code without a frame pointer.  */
+#define CAN_DEBUG_WITHOUT_FP
+
+/* Target machine storage layout */
+
+/* Define this if most significant bit is lowest numbered
+   in instructions that operate on numbered bit-fields. */
+
+#define BITS_BIG_ENDIAN 0
+
+/* Define this if most significant byte of a word is the lowest numbered.  */
+
+#define BYTES_BIG_ENDIAN 0
+
+/* Define this if most significant word of a multiword number is the lowest
+   numbered.  */
+
+#define WORDS_BIG_ENDIAN 0
+
+/* Number of bits in an addressable storage unit */
+#define BITS_PER_UNIT 8
+
+/* Width in bits of a "word", which is the contents of a machine register.
+   Note that this is not necessarily the width of data type `int';
+   if using 16-bit ints on a 68000, this would still be 32.
+   But on a machine with 16-bit registers, this would be 16.  */
+#define BITS_PER_WORD 32
+
+/* Width of a word, in units (bytes).  */
+#define UNITS_PER_WORD 4
+
+/* Width in bits of a pointer.
+   See also the macro `Pmode' defined below.  */
+#define POINTER_SIZE 32
+
+/* Allocation boundary (in *bits*) for storing arguments in argument list.  */
+#define PARM_BOUNDARY 32
+
+/* Largest alignment for stack parameters (if greater than PARM_BOUNDARY).  */
+#define MAX_PARM_BOUNDARY 64
+
+/* Allocation boundary (in *bits*) for the code of a function.  */
+#define FUNCTION_BOUNDARY 128
+
+/* Alignment of field after `int : 0' in a structure.  */
+#define EMPTY_FIELD_BOUNDARY 32
+
+/* Every structure's size must be a multiple of this.  */
+#define STRUCTURE_SIZE_BOUNDARY 8
+
+/* A bitfield declared as `int' forces `int' alignment for the struct.  */
+#define PCC_BITFIELD_TYPE_MATTERS 1
+
+/* No data type wants to be aligned rounder than this.  */
+#define BIGGEST_ALIGNMENT 64
+
+/* No structure field wants to be aligned rounder than this.  */
+#define BIGGEST_FIELD_ALIGNMENT 64
+
+/*  Make strcpy of constants fast. */
+#define CONSTANT_ALIGNMENT(CODE, TYPEALIGN) \
+  ((TYPEALIGN) < 32 ? 32 : (TYPEALIGN))
+
+/* Make arrays of chars word-aligned for the same reasons.  */
+#define DATA_ALIGNMENT(TYPE, ALIGN)		\
+  (TREE_CODE (TYPE) == ARRAY_TYPE		\
+   && TYPE_MODE (TREE_TYPE (TYPE)) == QImode	\
+   && (ALIGN) < BITS_PER_WORD ? BITS_PER_WORD : (ALIGN))
+
+/* Set this nonzero if move instructions will actually fail to work
+   when given unaligned data.  */
+#define STRICT_ALIGNMENT 1
+
+/* Let's keep the stack somewhat aligned.  */
+#define STACK_BOUNDARY 64
+
+/* Define this macro if it is advisable to hold scalars in registers
+   in a wider mode than that declared by the program.  In such cases, 
+   the value is constrained to be within the bounds of the declared
+   type, but kept valid in the wider mode.  The signedness of the
+   extension may differ from that of the type.
+
+   For Clipper, we always store objects in a full register. */
+
+#define PROMOTE_MODE(MODE,UNSIGNEDP,TYPE)  \
+  if (GET_MODE_CLASS (MODE) == MODE_INT		\
+      && GET_MODE_SIZE (MODE) < UNITS_PER_WORD)	\
+    {						\
+      (UNSIGNEDP) = 0;				\
+      (MODE) = SImode;				\
+    }
+
+
+/* Define this if function arguments should also be promoted using the above
+   procedure.  */
+
+/* FIXME: do we loose compatibility to acc if we define this? */
+
+/* #define PROMOTE_FUNCTION_ARGS */
+
+/* Likewise, if the function return value is promoted.  */
+
+/* #define PROMOTE_FUNCTION_RETURN */
+
+
+/* Standard register usage.  */
+
+/* Number of actual hardware registers.
+   The hardware registers are assigned numbers for the compiler
+   from 0 to just below FIRST_PSEUDO_REGISTER.
+   All registers that the compiler knows about must be given numbers,
+   even those that are not normally considered general registers.  */
+#define FIRST_PSEUDO_REGISTER 32
+
+/* 1 for registers that have pervasive standard uses
+   and are not available for the register allocator.
+   On the clipper, these are the FP and SP .  */
+#define FIXED_REGISTERS \
+{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1,\
+ 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1} /* Default: C300 */
+
+/* 1 for registers not available across function calls.
+   These must include the FIXED_REGISTERS and also any
+   registers that can be used without being saved.
+   The latter must include the registers where values are returned
+   and the register where structure-value addresses are passed.
+   Aside from that, you can include as many other registers as you like.  */
+#define CALL_USED_REGISTERS \
+{1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1,\
+ 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1} /* default: C300 */
+
+/* Zero or more C statements that may conditionally modify two
+   variables `fixed_regs' and `call_used_regs' (both of type `char
+   []') after they have been initialized from the two preceding
+   macros. A C400 has additional floating registers f8 -> f15 */
+
+#define CONDITIONAL_REGISTER_USAGE	\
+   if (target_flags & TARGET_C400)	\
+     { int i;				\
+       for (i = 24; i < 32; i++) fixed_regs[i] = call_used_regs[i] = 0; }
+
+/* Return number of consecutive hard regs needed starting at reg REGNO
+   to hold something of mode MODE.
+   This is ordinarily the length in words of a value of mode MODE
+   but can be less for certain modes in special long registers.
+   On the clipper, fp registers are 64 bits.  */
+
+#define HARD_REGNO_NREGS(REGNO, MODE)   \
+  ((REGNO) >= 16 ? 1 \
+   : ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD))
+
+/* Value is 1 if hard register REGNO can hold a value of machine-mode MODE.
+   On the clipper 0-15 may hold any mode but DImode and DFmode must be even.
+   Registers 16-31 hold SFmode and DFmode */
+
+#define HARD_REGNO_MODE_OK(REGNO, MODE)					\
+  ((REGNO) < 16 							\
+   ? ((MODE) != DImode && (MODE) != DFmode || ((REGNO) & 1) == 0)	\
+   : ((MODE) == SFmode || (MODE) == DFmode))
+
+/* Value is 1 if it is a good idea to tie two pseudo registers
+   when one has mode MODE1 and one has mode MODE2.
+   If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2,
+   for any hard reg, then this must be 0 for correct output.  */
+#define MODES_TIEABLE_P(MODE1, MODE2)  ((MODE1) == (MODE2))
+
+/* Specify the registers used for certain standard purposes.
+   The values of these macros are register numbers.  */
+
+/* clipper has extra PC  */
+/* #define PC_REGNUM */
+
+/* Register to use for pushing function arguments.  */
+#define STACK_POINTER_REGNUM 15
+
+/* Base register for access to local variables of the function.  */
+#define FRAME_POINTER_REGNUM 14
+
+/* Value should be nonzero if functions must have frame pointers.
+   Zero means the frame pointer need not be set up (and parms
+   may be accessed via the stack pointer) in functions that seem suitable.
+   This is computed in `reload', in reload1.c.  */
+#define FRAME_POINTER_REQUIRED \
+   (! leaf_function_p ())
+
+/* Base register for access to arguments of the function.  */
+#define ARG_POINTER_REGNUM FRAME_POINTER_REGNUM
+
+/* Register in which static-chain is passed to a function.  */
+#define STATIC_CHAIN_REGNUM 2
+
+/* Register in which address to store a structure value
+   is passed to a function.  */
+#define STRUCT_VALUE_REGNUM 0
+
+/* Define the classes of registers for register constraints in the
+   machine description.  Also define ranges of constants.
+
+   One of the classes must always be named ALL_REGS and include all hard regs.
+   If there is more than one class, another class must be named NO_REGS
+   and contain no registers.
+
+   The name GENERAL_REGS must be the name of a class (or an alias for
+   another name such as ALL_REGS).  This is the class of registers
+   that is allowed by "g" or "r" in a register constraint.
+   Also, registers outside this class are allocated only when
+   instructions express preferences for them.
+
+   The classes must be numbered in nondecreasing order; that is,
+   a larger-numbered class must never be contained completely
+   in a smaller-numbered class.
+
+   For any two classes, it is very desirable that there be another
+   class that represents their union.  */
+   
+/* The clipper has general and FP regs.  */
+
+enum reg_class { NO_REGS, GENERAL_REGS, FLOAT_REGS, ALL_REGS, LIM_REG_CLASSES};
+
+#define N_REG_CLASSES (int) LIM_REG_CLASSES
+
+/* Give names of register classes as strings for dump file.   */
+
+#define REG_CLASS_NAMES \
+ {"NO_REGS", "GENERAL_REGS", "FLOAT_REGS", "ALL_REGS" }
+
+/* Define which registers fit in which classes.
+   This is an initializer for a vector of HARD_REG_SET
+   of length N_REG_CLASSES.  */
+
+#define REG_CLASS_CONTENTS {0, 0x0000ffff, 0xffff0000, 0xffffffff}
+
+/* The same information, inverted:
+   Return the class number of the smallest class containing
+   reg number REGNO.  This could be a conditional expression
+   or could index an array.  */
+
+#define REGNO_REG_CLASS(REGNO) ((REGNO) >= 16 ? FLOAT_REGS : GENERAL_REGS)
+
+/* The class value for index registers, and the one for base regs.  */
+
+#define INDEX_REG_CLASS GENERAL_REGS
+#define BASE_REG_CLASS GENERAL_REGS
+
+/* Get reg_class from a letter such as appears in the machine description.  */
+
+#define REG_CLASS_FROM_LETTER(C) \
+  ((C) == 'r' ? GENERAL_REGS : ((C) == 'f' ? FLOAT_REGS: NO_REGS))
+
+/* The letters I, J, K, L and M in a register constraint string
+   can be used to stand for particular ranges of immediate operands.
+   This macro defines what the ranges are.
+   C is the letter, and VALUE is a constant value.
+   Return 1 if VALUE is in the range specified by C. */
+
+#define CONST_OK_FOR_LETTER_P(VALUE, C) 0
+
+/* Similar, but for floating constants, and defining letters G and H.
+   Here VALUE is the CONST_DOUBLE rtx itself. */
+
+#define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) 0
+
+/* Optional extra constraints for this machine. */
+
+/* #define EXTRA_CONSTRAINT(OP, C) */
+
+
+/* Given an rtx X being reloaded into a reg required to be
+   in class CLASS, return the class of reg to actually use.
+   In general this is just CLASS; but on some machines
+   in some cases it is preferable to use a more restrictive class.  */
+
+#define PREFERRED_RELOAD_CLASS(X,CLASS)  (CLASS)
+
+/* Return the maximum number of consecutive registers
+   needed to represent mode MODE in a register of class CLASS.  */
+
+#define CLASS_MAX_NREGS(CLASS, MODE)	\
+ ((CLASS) == FLOAT_REGS			\
+  ? 1					\
+  : (GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
+
+/* Stack layout; function entry, exit and calling.  */
+
+/* Define this if pushing a word on the stack
+   makes the stack pointer a smaller address.  */
+#define STACK_GROWS_DOWNWARD
+
+/* Define this if longjmp restores from saved registers
+   rather than from what setjmp saved.  */
+/* #define LONGJMP_RESTORE_FROM_STACK */
+
+/* Define this if the nominal address of the stack frame
+   is at the high-address end of the local variables;
+   that is, each additional local variable allocated
+   goes at a more negative offset in the frame.  */
+#define FRAME_GROWS_DOWNWARD
+
+/* Offset within stack frame to start allocating local variables at.
+   If FRAME_GROWS_DOWNWARD, this is the offset to the END of the
+   first local allocated.  Otherwise, it is the offset to the BEGINNING
+   of the first local allocated.  */
+#define STARTING_FRAME_OFFSET 0
+
+/* Given an rtx for the address of a frame,
+   return an rtx for the address of the word in the frame
+   that holds the dynamic chain--the previous frame's address.  */
+#define DYNAMIC_CHAIN_ADDRESS(frame) (frame)
+
+/* If we generate an insn to push BYTES bytes,
+   this says how many the stack pointer really advances by. */
+
+/* #define PUSH_ROUNDING(BYTES) (BYTES) */
+
+/* Keep the stack pointer constant throughout the function. */
+/* we can't set this for clipper as library calls may have 3 args and we pass
+   only 2 args in regs. */
+
+/* #define ACCUMULATE_OUTGOING_ARGS */
+  
+
+/* Offset of first parameter from the argument pointer register value.
+   size of PC + FP  */
+
+#define FIRST_PARM_OFFSET(FNDECL) 8
+
+/* Value is the number of bytes of arguments automatically
+   popped when returning from a subroutine call.
+   FUNDECL is the declaration node of the function (as a tree),
+   FUNTYPE is the data type of the function (as a tree),
+   or for a library call it is an identifier node for the subroutine name.
+   SIZE is the number of bytes of arguments passed on the stack. */
+
+#define RETURN_POPS_ARGS(FUNDECL,FUNTYPE,SIZE) 0
+
+/* Define how to find the value returned by a function.
+   VALTYPE is the data type of the value (as a tree).
+   If the precise function being called is known, FUNC is its FUNCTION_DECL;
+   otherwise, FUNC is 0.  */
+
+#define FUNCTION_VALUE(VALTYPE, FUNC)  \
+  gen_rtx (REG, TYPE_MODE (VALTYPE), ((TYPE_MODE (VALTYPE) == SFmode ||\
+				       TYPE_MODE (VALTYPE) == DFmode) ? \
+				        16 : 0))
+
+/* Define how to find the value returned by a library function
+   assuming the value has mode MODE.  */
+
+#define LIBCALL_VALUE(MODE)  \
+  gen_rtx (REG, (MODE), ((MODE) == SFmode || (MODE) == DFmode ? 16 : 0))
+
+
+/* 1 if N is a possible register number for a function value
+   as seen by the caller.  */
+
+#define FUNCTION_VALUE_REGNO_P(N) ((N) == 0 || (N) == 16)
+
+/* 1 if N is a possible register number for function argument passing.  */
+
+#define FUNCTION_ARG_REGNO_P(N) \
+  ((N) == 0 || (N) == 1 || (N) == 16 || (N) == 17)
+
+/* Define this if PCC uses the nonreentrant convention for returning
+   structure and union values. Old Green Hills C-Clipper returns static
+   structs but the newer Apogee compiler passes structs as hidden arg 0.
+   Structs etc are always passed in memory */
+
+/* #define PCC_STATIC_STRUCT_RETURN */
+
+
+/* Define a data type for recording info about an argument list
+   during the scan of that argument list.  This data type should
+   hold all necessary information about the function itself
+   and about the args processed so far, enough to enable macros
+   such as FUNCTION_ARG to determine where the next arg should go.
+
+   Clipper uses 2 register 'slots' that pass arguments in r0/r1 or f0/f1.
+   An argument that must be passed in memory (struct... ) leaves that slot
+   free.
+   We pass 'long long' only in registers when both slots are free.
+   Returned structs must be allocated by the caller, the address is passed
+   in r0.
+
+   struct ss {..}
+
+   fun (i,j,k)		i in r0, j in r1, k on stack
+   fun (s,j,k)		s on stack, j in r1, k on stack
+   fun (i,s,k)		i in r0, s on stack, k on stack
+   s1 = fun (i,s,k)	&s1 in r0, i in r1, s on stack, k on stack
+
+   We must keep enough information for varargs/stdargs.
+
+   _clipper_cum_args is a struct of 2 integers, with
+	num =  slots used
+	size = size of all stack args = offset to next arg without alignment
+
+   If we use stdarg.h, size points to the first unnamed arg,
+   see va-clipper.h */
+
+struct _clipper_cum_args { int num; int size; };
+
+#define CUMULATIVE_ARGS struct _clipper_cum_args
+
+/* Initialize a variable CUM of type CUMULATIVE_ARGS
+   for a call to a function whose data type is FNTYPE.
+   For a library call, FNTYPE is 0.
+
+   clipper passes the address of a struct in r0, set num = 1 in this case */
+
+#define INIT_CUMULATIVE_ARGS(CUM,FNTYPE,LIBNAME,INDIRECT) \
+  ((CUM).num = ((FNTYPE) != 0 && aggregate_value_p (TREE_TYPE (FNTYPE))), \
+   (CUM).size = 0)
+
+/* internal helper : size of an argument */
+
+#define CLIPPER_ARG_SIZE(MODE, TYPE)				\
+(((MODE) != BLKmode							\
+  ? (GET_MODE_SIZE (MODE) + (UNITS_PER_WORD - 1)) / UNITS_PER_WORD 	\
+  : (int_size_in_bytes (TYPE) + (UNITS_PER_WORD - 1)) / UNITS_PER_WORD)	\
+ * UNITS_PER_WORD)
+
+/* Update the data in CUM to advance over an argument
+   of mode MODE and data type TYPE.
+   (TYPE is null for libcalls where that information may not be available.)  */
+
+#define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED)			      \
+do									      \
+{									      \
+  int reg = 0;								      \
+									      \
+  if ((CUM).num < 2							      \
+      && (GET_MODE_CLASS(MODE)==MODE_INT || GET_MODE_CLASS(MODE)==MODE_FLOAT) \
+      && (GET_MODE_SIZE (MODE) <= 8)					      \
+      && ((TYPE) == NULL || !AGGREGATE_TYPE_P(TYPE))			      \
+      && ((MODE) != DImode || (CUM).num == 0))				      \
+    {									      \
+      reg = 1;								      \
+      if ((MODE) == DImode)						      \
+	(CUM).num = 1;							      \
+    }									      \
+									      \
+  (CUM).num++;								      \
+									      \
+  if (! reg)								      \
+    {									      \
+      int align = FUNCTION_ARG_BOUNDARY (MODE, TYPE) / BITS_PER_UNIT;	      \
+      (CUM).size += align - 1;						      \
+      (CUM).size &= ~(align - 1);					      \
+      (CUM).size += CLIPPER_ARG_SIZE (MODE, TYPE);			      \
+    }									      \
+} while (0)
+
+/* Define where to put the arguments to a function.
+   Value is zero to push the argument on the stack,
+   or a hard register in which to store the argument.
+
+   MODE is the argument's machine mode.
+   TYPE is the data type of the argument (as a tree).
+    This is null for libcalls where that information may
+    not be available.
+   CUM is a variable of type CUMULATIVE_ARGS which gives info about
+    the preceding args and about the function being called.
+   NAMED is nonzero if this argument is a named parameter
+    (otherwise it is an extra parameter matching an ellipsis).
+
+   2 args may go into regs. These must be MODE_INT or MODE_FLOAT but only
+   if they really fit into ONE register. The exception is a DImode arg
+   that occupies both register slots. */
+
+#define FUNCTION_ARG(CUM, MODE, TYPE, NAMED)				     \
+  (((CUM).num < 2							     \
+    && (GET_MODE_CLASS(MODE)==MODE_INT || GET_MODE_CLASS(MODE)==MODE_FLOAT)  \
+    && (GET_MODE_SIZE (MODE) <= 8)					     \
+    && ((TYPE) == NULL || !AGGREGATE_TYPE_P(TYPE))			     \
+    && ((MODE) != DImode || (CUM).num == 0))				     \
+   ? gen_rtx (REG, (MODE),						     \
+	      GET_MODE_CLASS(MODE) == MODE_FLOAT ? (CUM).num+16 : (CUM).num) \
+   : 0)
+
+/* If defined, a C expression that gives the alignment boundary, in bits,
+   of an argument with the specified mode and type.  If it is not defined,
+   `PARM_BOUNDARY' is used for all arguments.  */
+
+#define FUNCTION_ARG_BOUNDARY(MODE, TYPE) \
+  (((TYPE) ? TYPE_ALIGN (TYPE) : GET_MODE_SIZE (MODE)) <= PARM_BOUNDARY \
+    ? PARM_BOUNDARY : 2 * PARM_BOUNDARY)
+
+/* For an arg passed partly in registers and partly in memory,
+   this is the number of registers used.
+   For args passed entirely in registers or entirely in memory, zero.
+   Clipper never passed args partially in regs/mem. */
+
+/* #define FUNCTION_ARG_PARTIAL_NREGS(CUM, MODE, TYPE, NAMED)  0 */
+
+/* Generate necessary RTL for __builtin_saveregs().
+   ARGLIST is the argument list; see expr.c.  */
+
+#define EXPAND_BUILTIN_SAVEREGS(ARGLIST) clipper_builtin_saveregs (ARGLIST)
+
+/* This macro generates the assembly code for function entry.
+   FILE is a stdio stream to output the code to.
+   SIZE is an int: how many units of temporary storage to allocate.
+   Refer to the array `regs_ever_live' to determine which registers
+   to save; `regs_ever_live[I]' is nonzero if register number I
+   is ever used in the function.  This macro is responsible for
+   knowing which registers should not be saved even if used.  */
+
+#define FUNCTION_PROLOGUE(FILE, SIZE) output_function_prologue (FILE,SIZE)
+
+/* Output assembler code to FILE to increment profiler label # LABELNO
+   for profiling a function entry.  */
+
+#define FUNCTION_PROFILER(FILE, LABELNO)  /* FIXME */
+
+/* Output assembler code to FILE to initialize this source file's
+   basic block profiling info, if that has not already been done.  */
+
+#define FUNCTION_BLOCK_PROFILER(FILE, LABELNO)  /* FIXME */
+
+/* Output assembler code to FILE to increment the entry-count for
+   the BLOCKNO'th basic block in this source file.  */
+
+#define BLOCK_PROFILER(FILE, BLOCKNO)	/* FIXME */
+
+/* EXIT_IGNORE_STACK should be nonzero if, when returning from a function,
+   the stack pointer does not matter.  The value is tested only in
+   functions that have frame pointers.
+   No definition is equivalent to always zero.  */
+
+#define EXIT_IGNORE_STACK 1
+
+/* This macro generates the assembly code for function exit,
+   on machines that need it.  If FUNCTION_EPILOGUE is not defined
+   then individual return instructions are generated for each
+   return statement.  Args are same as for FUNCTION_PROLOGUE.  */
+
+#define FUNCTION_EPILOGUE(FILE, SIZE) output_function_epilogue(FILE,SIZE)
+
+/* Store in the variable DEPTH the initial difference between the
+   frame pointer reg contents and the stack pointer reg contents,
+   as of the start of the function body.  This depends on the layout
+   of the fixed parts of the stack frame and on how registers are saved. */
+
+#define INITIAL_FRAME_POINTER_OFFSET(DEPTH) \
+  DEPTH = clipper_frame_size (get_frame_size ())
+
+
+/* Output assembler code for a block containing the constant parts
+   of a trampoline, leaving space for the variable parts.  */
+
+#define TRAMPOLINE_TEMPLATE(FILE)					      \
+{									      \
+  fputs ("\t.word  0x459F,0x0004\t# call   sp,.+4\n", FILE);		      \
+  fputs ("\tmovw   (sp),r3\n", FILE);					      \
+  fputs ("\taddq   $4,sp\n", FILE);					      \
+  fputs ("\tloadw  20(r3),r2\n", FILE);					      \
+  fputs ("\tloadw  24(r3),r3\n", FILE);					      \
+  fputs ("\tb      (r3)\n", FILE);					      \
+  fputs ("\t.long  0,0\n", FILE);					      \
+}
+
+/* Length in units of the trampoline for entering a nested function.  */
+
+#define TRAMPOLINE_SIZE 32
+
+/* Alignment required for a trampoline.  128 is used to find the
+   beginning of a line in the instruction cache and to allow for
+   instruction cache lines of up to 128 bytes.  */
+
+#define TRAMPOLINE_ALIGNMENT 128
+
+/* Section in which to place the trampoline.  */
+
+#define TRAMPOLINE_SECTION text_section
+
+/* Emit RTL insns to initialize the variable parts of a trampoline.
+   FNADDR is an RTX for the address of the function's pure code.
+   CXT is an RTX for the static chain value for the function.  */
+
+#define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT)			\
+{									\
+  emit_move_insn (gen_rtx (MEM, SImode, plus_constant (TRAMP, 24)), CXT); \
+  emit_move_insn (gen_rtx (MEM, SImode, plus_constant (TRAMP, 28)), FNADDR); \
+}
+
+/* Addressing modes, and classification of registers for them.  */
+
+/* #define HAVE_POST_DECREMENT 0 */
+
+/* #define HAVE_PRE_INCREMENT 0 */
+
+/* Macros to check register numbers against specific register classes.  */
+
+/* These assume that REGNO is a hard or pseudo reg number.
+   They give nonzero only if REGNO is a hard reg of the suitable class
+   or a pseudo reg currently allocated to a suitable hard reg.
+   Since they use reg_renumber, they are safe only once reg_renumber
+   has been allocated, which happens in local-alloc.c.  */
+
+#define REGNO_OK_FOR_INDEX_P(regno)  \
+((regno) < 16 || (unsigned)reg_renumber[regno] < 16)
+#define REGNO_OK_FOR_BASE_P(regno) \
+((regno) < 16 || (unsigned)reg_renumber[regno] < 16)
+
+/* Maximum number of registers that can appear in a valid memory address.  */
+
+#define MAX_REGS_PER_ADDRESS 2
+
+/* 1 if X is an rtx for a constant that is a valid address.  */
+
+#define CONSTANT_ADDRESS_P(X)   \
+  (GET_CODE (X) == LABEL_REF || GET_CODE (X) == SYMBOL_REF		\
+   || GET_CODE (X) == CONST_INT || GET_CODE (X) == CONST		\
+   || GET_CODE (X) == HIGH)
+
+/* Nonzero if the constant value X is a legitimate general operand.
+   It is given that X satisfies CONSTANT_P or is a CONST_DOUBLE.  */
+
+#define LEGITIMATE_CONSTANT_P(X) 1
+
+/* The macros REG_OK_FOR..._P assume that the arg is a REG rtx
+   and check its validity for a certain class.
+   We have two alternate definitions for each of them.
+   The usual definition accepts all pseudo regs; the other rejects
+   them unless they have been allocated suitable hard regs.
+   The symbol REG_OK_STRICT causes the latter definition to be used.
+
+   Most source files want to accept pseudo regs in the hope that
+   they will get allocated to the class that the insn wants them to be in.
+   Source files for reload pass need to be strict.
+   After reload, it makes no difference, since pseudo regs have
+   been eliminated by then.  */
+
+  /* clipper doesn't have true indexing */
+
+#ifndef REG_OK_STRICT
+
+/* Nonzero if X is a hard reg that can be used as an index
+   or if it is a pseudo reg.  */
+
+#define REG_OK_FOR_INDEX_P(X) \
+  (REGNO (X) < 16 || REGNO(X) >= FIRST_PSEUDO_REGISTER)
+
+/* Nonzero if X is a hard reg that can be used as a base reg
+   or if it is a pseudo reg.  */
+
+#define REG_OK_FOR_BASE_P(X) \
+  (REGNO (X) < 16 || REGNO(X) >= FIRST_PSEUDO_REGISTER)
+
+#else
+
+/* Nonzero if X is a hard reg that can be used as an index.  */
+#define REG_OK_FOR_INDEX_P(X) (REGNO(X) < 16)
+
+/* Nonzero if X is a hard reg that can be used as a base reg.  */
+#define REG_OK_FOR_BASE_P(X) (REGNO(X) < 16)
+
+#endif
+
+/* GO_IF_LEGITIMATE_ADDRESS recognizes an RTL expression
+   that is a valid memory address for an instruction.
+   The MODE argument is the machine mode for the MEM expression
+   that wants to use this address.
+
+   The other macros defined here are used only in GO_IF_LEGITIMATE_ADDRESS,
+   except for CONSTANT_ADDRESS_P which is actually machine-independent.  */
+
+/* Non-zero if X is an address which can be indirected. */
+
+#define INDIRECTABLE_CONSTANT_ADDRESS_P(X) 0
+
+#define INDIRECTABLE_ADDRESS_P(X)  \
+  (GET_CODE (X) == REG && REG_OK_FOR_BASE_P (X))
+
+/* Go to ADDR if X is a valid address not using indexing.
+   (This much is the easy part.)  */
+
+#define GO_IF_NONINDEXED_ADDRESS(X, ADDR)	\
+{ if (CONSTANT_ADDRESS_P (X)) goto ADDR;	\
+  if (INDIRECTABLE_ADDRESS_P (X)) goto ADDR; }
+
+#define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR) \
+{ register rtx xfoo = (X);			\
+  GO_IF_NONINDEXED_ADDRESS (xfoo, ADDR);	\
+  if (GET_CODE (xfoo) == PLUS)			\
+    { register rtx xfoo0, xfoo1;		\
+      xfoo0 = XEXP (xfoo, 0);			\
+      xfoo1 = XEXP (xfoo, 1);			\
+    /* handle reg + reg -> [r1](r0) */		\
+      if (INDIRECTABLE_ADDRESS_P (xfoo0) && INDIRECTABLE_ADDRESS_P (xfoo1)) \
+	goto ADDR;							\
+    /* Handle <symbol>(reg) -> xxx(r0) */				\
+      if (INDIRECTABLE_ADDRESS_P (xfoo0) && CONSTANT_ADDRESS_P (xfoo1))	\
+	goto ADDR;							\
+      if (INDIRECTABLE_ADDRESS_P (xfoo1) && CONSTANT_ADDRESS_P (xfoo0))	\
+	goto ADDR; }}
+
+
+/* Try machine-dependent ways of modifying an illegitimate address
+   to be legitimate.  If we find one, return the new, valid address.
+   This macro is used in only one place: `memory_address' in explow.c.
+
+   OLDX is the address as it was before break_out_memory_refs was called.
+   In some cases it is useful to look at this to decide what needs to be done.
+
+   MODE and WIN are passed so that this macro can use
+   GO_IF_LEGITIMATE_ADDRESS.
+
+   It is always safe for this macro to do nothing.  It exists to recognize
+   opportunities to optimize the output.
+
+   For the clipper, nothing needs to be done.  */
+
+#define LEGITIMIZE_ADDRESS(X,OLDX,MODE,WIN)  {}
+
+/* Go to LABEL if ADDR (a legitimate address expression)
+   has an effect that depends on the machine mode it is used for. */
+
+#define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL) {}
+
+
+/* Specify the machine mode that this machine uses
+   for the index in the tablejump instruction.  */
+#define CASE_VECTOR_MODE SImode
+
+/* Define as C expression which evaluates to nonzero if the tablejump
+   instruction expects the table to contain offsets from the address of the
+   table.
+   Do not define this if the table should contain absolute addresses. */
+/* #define CASE_VECTOR_PC_RELATIVE 1 */
+
+/* Define this if the case instruction drops through after the table
+   when the index is out of range.  Don't define it if the case insn
+   jumps to the default label instead.  */
+/* #define CASE_DROPS_THROUGH */
+
+/* Define if operations between registers always perform the operation
+   on the full register even if a narrower mode is specified.  */
+#define WORD_REGISTER_OPERATIONS
+
+/* Define if loading in MODE, an integral mode narrower than BITS_PER_WORD
+   will either zero-extend or sign-extend.  The value of this macro should
+   be the code that says which one of the two operations is implicitly
+   done, NIL if none.  */
+#define LOAD_EXTEND_OP(MODE) SIGN_EXTEND
+
+/* Specify the tree operation to be used to convert reals to integers.  */
+#define IMPLICIT_FIX_EXPR FIX_ROUND_EXPR
+
+/* This is the kind of divide that is easiest to do in the general case.  */
+#define EASY_DIV_EXPR TRUNC_DIV_EXPR
+
+/* Define this as 1 if `char' should by default be signed; else as 0.  */
+#define DEFAULT_SIGNED_CHAR 1
+
+/* This flag, if defined, says the same insns that convert to a signed fixnum
+   also convert validly to an unsigned one.  */
+#define FIXUNS_TRUNC_LIKE_FIX_TRUNC
+
+/* Max number of bytes we can move from memory to memory
+   in one reasonably fast instruction.  */
+#define MOVE_MAX 4
+
+/* If a memory-to-memory move would take MOVE_RATIO or more simple
+   move-instruction pairs, we will do a movstr or libcall instead.
+
+   Make this large on clipper, since the block move is very
+   inefficient with small blocks, and the hard register needs of the
+   block move require much reload work. */
+
+#define MOVE_RATIO 20
+
+/* Define this if zero-extension is slow (more than one real instruction).  */
+/* #define SLOW_ZERO_EXTEND */
+
+/* Nonzero if access to memory by bytes is slow and undesirable.  */
+#define SLOW_BYTE_ACCESS 0
+
+/* Define if shifts truncate the shift count
+   which implies one can omit a sign-extension or zero-extension
+   of a shift count.  */
+/* #define SHIFT_COUNT_TRUNCATED */
+
+/* Value is 1 if truncating an integer of INPREC bits to OUTPREC bits
+   is done just by pretending it is already truncated.  */
+#define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
+
+/* Specify the machine mode that pointers have.
+   After generation of rtl, the compiler makes no further distinction
+   between pointers and any other objects of this machine mode.  */
+#define Pmode SImode
+
+/* A function address in a call instruction
+   is a byte address (for indexing purposes)
+   so give the MEM rtx a byte's mode.  */
+#define FUNCTION_MODE QImode
+
+/* This machine uses IEEE floats.  */
+
+#define TARGET_FLOAT_FORMAT IEEE_FLOAT_FORMAT
+
+/* Check a `double' value for validity for a particular machine mode.
+   This is defined to avoid crashes outputting certain constants.
+   Since we output the number in hex, the assembler won't choke on it.  */
+/* #define CHECK_FLOAT_VALUE(MODE,VALUE) */
+
+
+/* Compute the cost of computing a constant rtl expression RTX
+   whose rtx-code is CODE.  The body of this macro is a portion
+   of a switch statement.  If the code is computed here,
+   return it with a return statement.  Otherwise, break from the switch.  */
+
+/* On a Clipper, constants from 0..15 are cheap because they can use the
+   'quick' mode. */
+
+#define CONST_COSTS(RTX,CODE,OUTER_CODE) \
+  case CONST_INT:						\
+    if (0 <= INTVAL (RTX) && INTVAL(RTX) <= 15 ) return 0;	\
+      return 1;							\
+  case CONST:							\
+  case LABEL_REF:						\
+  case SYMBOL_REF:						\
+    return 3;							\
+  case CONST_DOUBLE:						\
+    return 5;
+
+/* Provide the costs of a rtl expression.  This is in the body of a
+   switch on CODE.  */
+
+#define RTX_COSTS(X,CODE,OUTER_CODE)			\
+  case MULT:						\
+    return COSTS_N_INSNS (4);				\
+  case DIV:						\
+  case UDIV:						\
+  case MOD:						\
+  case UMOD:						\
+    return COSTS_N_INSNS (40);				\
+  case ASHIFT:						\
+  case LSHIFTRT:					\
+  case ASHIFTRT:					\
+    return COSTS_N_INSNS (2);				\
+ case SIGN_EXTEND:					\
+    return (GET_CODE (XEXP (X,0)) == REG ? COSTS_N_INSNS (3) : 4);
+
+/* Specify the cost of a branch insn; roughly the number of extra insns that
+   should be added to avoid a branch */
+
+/* #define BRANCH_COST 0 */
+
+
+/* Tell final.c how to eliminate redundant test instructions.  */
+
+/* Here we define machine-dependent flags and fields in cc_status
+   (see `conditions.h').  No extra ones are needed for the clipper.  */
+
+/* Store in cc_status the expressions
+   that the condition codes will describe
+   after execution of an instruction whose pattern is EXP.
+   Do not alter them if the instruction would not alter the cc's.  */
+
+#define NOTICE_UPDATE_CC(EXP, INSN) \
+{									      \
+  enum attr_cc cc = get_attr_cc (INSN);					      \
+  rtx dest = SET_DEST (EXP);						      \
+  switch (cc)								      \
+    {									      \
+    case CC_CHANGE0:							      \
+      if (GET_CODE (EXP) == PARALLEL) abort();				      \
+      if (cc_status.value1 && rtx_equal_p (dest, cc_status.value1) ||	      \
+	  cc_status.value2 && rtx_equal_p (dest, cc_status.value2))	      \
+	CC_STATUS_INIT;							      \
+      break;								      \
+									      \
+    case CC_SET1:							      \
+      if (GET_CODE (EXP) == PARALLEL) abort();				      \
+      cc_status.flags = 0;						      \
+      cc_status.value1 = dest;						      \
+      cc_status.value2 = 0;						      \
+      break;								      \
+									      \
+    case CC_SET2:							      \
+      if (GET_CODE (EXP) == PARALLEL) abort();				      \
+      cc_status.flags = 0;						      \
+      cc_status.value1 = dest;						      \
+      cc_status.value2 = SET_SRC (EXP);					      \
+      break;								      \
+									      \
+    case CC_UNCHANGED:							      \
+      break;								      \
+									      \
+    case CC_CLOBBER:							      \
+      CC_STATUS_INIT;							      \
+      break;								      \
+									      \
+    default:								      \
+      abort ();								      \
+    }									      \
+}
+
+
+/* Control the assembler format that we output.  */
+
+/* Output at beginning of assembler file.  */
+
+#define ASM_FILE_START(FILE) fprintf (FILE, "#NO_APP\n");
+
+/* Output to assembler file text saying following lines
+   may contain character constants, extra white space, comments, etc.  */
+
+#define ASM_APP_ON "#APP\n"
+
+/* Output to assembler file text saying following lines
+   no longer contain unusual constructs.  */
+
+#define ASM_APP_OFF "#NO_APP\n"
+
+/* Output before read-only data.  */
+
+#define TEXT_SECTION_ASM_OP ".text"
+
+/* Output before writable data.  */
+
+#define DATA_SECTION_ASM_OP ".data"
+
+/* How to refer to registers in assembler output.
+   This sequence is indexed by compiler's hard-register-number (see above).  */
+
+#define REGISTER_NAMES \
+{"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8", \
+ "r9", "r10", "r11", "r12", "r13", "fp", "sp", \
+ "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", "f8", \
+ "f9", "f10", "f11", "f12", "f13", "f14", "f15" }
+
+/* How to renumber registers for dbx and gdb.
+   Clipper needs no change in the numeration.  */
+
+#define DBX_REGISTER_NUMBER(REGNO) (REGNO)
+
+
+/* This is how to output the definition of a user-level label named NAME,
+   such as the label on a static function or variable NAME.  */
+
+#define ASM_OUTPUT_LABEL(FILE,NAME)	\
+  do { assemble_name (FILE, NAME); fputs (":\n", FILE); } while (0)
+
+/* This is how to output a command to make the user-level label named NAME
+   defined for reference from other files.  */
+
+#define ASM_GLOBALIZE_LABEL(FILE,NAME)	\
+  do { fputs (".globl ", FILE); assemble_name (FILE, NAME); fputs ("\n", FILE);} while (0)
+
+/* This is how to output an assembler line defining an `int' constant.  */
+
+#define ASM_OUTPUT_INT(FILE,VALUE)  \
+( fprintf (FILE, "\t.long "),			\
+  output_addr_const (FILE, (VALUE)),		\
+  fprintf (FILE, "\n"))
+
+/* Likewise for `char' and `short' constants.  */
+
+#define ASM_OUTPUT_SHORT(FILE,VALUE)  \
+( fprintf (FILE, "\t.word "),			\
+  output_addr_const (FILE, (VALUE)),		\
+  fprintf (FILE, "\n"))
+
+#define ASM_OUTPUT_CHAR(FILE,VALUE)  \
+( fprintf (FILE, "\t.byte "),			\
+  output_addr_const (FILE, (VALUE)),		\
+  fprintf (FILE, "\n"))
+
+/* This is how to output an assembler line for a numeric constant byte.  */
+
+#define ASM_OUTPUT_BYTE(FILE,VALUE)  \
+  fprintf (FILE, "\t.byte 0x%x\n", (VALUE))
+
+/* This is how to output an insn to push a register on the stack.
+   It need not be very fast code.  */
+
+#define ASM_OUTPUT_REG_PUSH(FILE,REGNO)  \
+  fprintf (FILE, "\tsubq   $8,sp\n\t%s  %s,(sp)\n",	\
+	   (REGNO) < 16 ? "storw" : "stord", reg_names[REGNO])
+
+/* This is how to output an insn to pop a register from the stack.
+   It need not be very fast code.  */
+
+#define ASM_OUTPUT_REG_POP(FILE,REGNO)  \
+  fprintf (FILE, "\t%s  (sp),%s\n\t\addq  $8,sp\n",	\
+	   (REGNO) < 16 ? "loadw" : "loadd", reg_names[REGNO])
+/* This is how to output an element of a case-vector that is absolute */
+
+#define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE)  \
+  fprintf (FILE, "\t.long .L%d\n", VALUE)
+
+/* This is how to output an element of a case-vector that is relative.  */
+
+#define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL)  \
+  fprintf (FILE, "\t.word .L%d-.L%d\n", VALUE, REL)
+
+/* This is how to output an assembler line
+   that says to advance the location counter by SIZE bytes.  */
+
+#define ASM_OUTPUT_SKIP(FILE,SIZE)  \
+  fprintf (FILE, "\t.space %u\n", (SIZE))
+
+/* This says how to output an assembler line
+   to define a local common symbol.  */
+/* ??? The use of .bss here seems odd.  */
+
+#define ASM_OUTPUT_ALIGNED_LOCAL(FILE,NAME,SIZE,ALIGN)	\
+( data_section (),					\
+  fputs ("\t.bss\t", (FILE)),				\
+  assemble_name ((FILE), (NAME)),			\
+  fprintf ((FILE), ",%u,%u\n", (SIZE), (ALIGN)/BITS_PER_UNIT))
+
+/* Store in OUTPUT a string (made with alloca) containing
+   an assembler-name for a local static variable named NAME.
+   LABELNO is an integer which is different for each call.  */
+
+#define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO)	\
+( (OUTPUT) = (char *) alloca (strlen ((NAME)) + 10),	\
+  sprintf ((OUTPUT), "%s.%d", (NAME), (LABELNO)))
+
+/* Define the parentheses used to group arithmetic operations
+   in assembler code.  */
+
+#define ASM_OPEN_PAREN "("
+#define ASM_CLOSE_PAREN ")"
+
+/* Define results of standard character escape sequences.  */
+#define TARGET_BELL 007
+#define TARGET_BS 010
+#define TARGET_TAB 011
+#define TARGET_NEWLINE 012
+#define TARGET_VT 013
+#define TARGET_FF 014
+#define TARGET_CR 015
+
+/* Print an instruction operand X on file FILE.
+   CODE is the code from the %-spec that requested printing this operand;
+   if `%z3' was used to print operand 3, then CODE is 'z'.
+
+Clipper operand formatting codes:
+
+ letter	   print
+   C	reverse branch condition
+*/
+
+#define PRINT_OPERAND_PUNCT_VALID_P(CODE)				\
+  ((CODE) == 'C')
+
+#define PRINT_OPERAND(FILE, X, CODE)  \
+{ extern char *rev_cond_name ();					\
+  if (CODE == 'C')							\
+    fputs (rev_cond_name (X), FILE);					\
+  else if (GET_CODE (X) == REG)						\
+    fprintf (FILE, "%s", reg_names[REGNO (X)]);				\
+  else if (GET_CODE (X) == MEM)						\
+    output_address (XEXP (X, 0));					\
+  else { putc ('$', FILE); output_addr_const (FILE, X); }}
+
+/* Print a memory operand whose address is X, on file FILE.
+   This uses a function in output-clipper.c.  */
+
+#define PRINT_OPERAND_ADDRESS(FILE, ADDR)  \
+ print_operand_address (FILE, ADDR)
+
+/* Define the codes that are matched by predicates in clipper.c */
+
+#define PREDICATE_CODES \
+  {"int_reg_operand", {SUBREG, REG}},	\
+  {"fp_reg_operand", {SUBREG, REG}},