+++ /dev/null
-/* Definitions of target machine for GNU compiler. Clipper version.
- Copyright (C) 1987, 1988, 1991, 1993, 1994, 1995, 1996, 1998,
- 1999, 2000, 2001, 2002 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. */
-
-/* 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, N_("Generate code for the C400") }, \
- { "c300", -1, N_("Generate code for the C300") }, \
- { "", TARGET_DEFAULT, NULL} }
-
-#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
-\f
-/* 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 */
-
-\f
-/* 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
-\f
-/* 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)
-\f
-/* 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 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 1*/
-
-
-/* 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 */
-
-\f
-/* 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() clipper_builtin_saveregs ()
-
-/* Output assembler code to FILE to increment profiler label # LABELNO
- for profiling a function entry. */
-
-#define FUNCTION_PROFILER(FILE, LABELNO) /* 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
-
-/* 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); \
-}
-\f
-/* 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)
-\f
-/* 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
-\f
-/* 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; }}
-
-\f
-/* 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) {}
-
-\f
-/* 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
-
-/* 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
-
-/* 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 */
-
-\f
-/* 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 (); \
- } \
-}
-
-\f
-/* 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 "\t.text"
-
-/* Output before writable data. */
-
-#define DATA_SECTION_ASM_OP "\t.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" }
-
-/* 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 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\taddq $8,sp\n", \
- (REGNO) < 16 ? "loadw" : "loadd", reg_names[REGNO])
-/* This is how to output an element of a case-vector that is absolute */
-
-#define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \
- fprintf (FILE, "\t.long .L%d\n", VALUE)
-
-/* This is how to output an element of a case-vector that is relative. */
-
-#define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \
- fprintf (FILE, "\t.word .L%d-.L%d\n", VALUE, REL)
-
-/* This is how to output an assembler line
- that says to advance the location counter by SIZE bytes. */
-
-#define ASM_OUTPUT_SKIP(FILE,SIZE) \
- fprintf (FILE, "\t.space %u\n", (SIZE))
-
-/* This says how to output an assembler line
- to define a local common symbol. */
-/* ??? The use of .bss here seems odd. */
-
-#define ASM_OUTPUT_ALIGNED_LOCAL(FILE,NAME,SIZE,ALIGN) \
-( data_section (), \
- fputs ("\t.bss\t", (FILE)), \
- assemble_name ((FILE), (NAME)), \
- fprintf ((FILE), ",%u,%u\n", (SIZE), (ALIGN)/BITS_PER_UNIT))
-
-/* Store in OUTPUT a string (made with alloca) containing
- an assembler-name for a local static variable named NAME.
- LABELNO is an integer which is different for each call. */
-
-#define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO) \
-( (OUTPUT) = (char *) alloca (strlen ((NAME)) + 10), \
- sprintf ((OUTPUT), "%s.%d", (NAME), (LABELNO)))
-
-/* Print an instruction operand X on file FILE.
- CODE is the code from the %-spec that requested printing this operand;
- if `%z3' was used to print operand 3, then CODE is 'z'.
-
-Clipper operand formatting codes:
-
- letter print
- C reverse branch condition
-*/
-
-#define PRINT_OPERAND_PUNCT_VALID_P(CODE) \
- ((CODE) == 'C')
-
-#define PRINT_OPERAND(FILE, X, CODE) \
-{ if (CODE == 'C') \
- fputs (rev_cond_name (X), FILE); \
- else if (GET_CODE (X) == REG) \
- fprintf (FILE, "%s", reg_names[REGNO (X)]); \
- else if (GET_CODE (X) == MEM) \
- output_address (XEXP (X, 0)); \
- else { putc ('$', 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}},
-\f
-/* Define the `__builtin_va_list' type for the ABI. */
-#define BUILD_VA_LIST_TYPE(VALIST) \
- (VALIST) = clipper_build_va_list ()
-
-/* Implement `va_start' for varargs and stdarg. */
-#define EXPAND_BUILTIN_VA_START(stdarg, valist, nextarg) \
- clipper_va_start (stdarg, valist, nextarg)
-
-/* Implement `va_arg'. */
-#define EXPAND_BUILTIN_VA_ARG(valist, type) \
- clipper_va_arg (valist, type)
projects / msp430-gcc.git / blobdiff