+++ /dev/null
-/* Definitions of target machine for GNU compiler. NS32000 version.
- Copyright (C) 1988, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
- 2001, 2002 Free Software Foundation, Inc.
- Contributed by Michael Tiemann (tiemann@cygnus.com)
-
-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. */
-
-
-/* Note that some other tm.h files include this one and then override
- many of the definitions that relate to assembler syntax. */
-
-/* Names to predefine in the preprocessor for this target machine. */
-
-#define CPP_PREDEFINES "-Dns32000 -Dunix -Asystem=unix -Acpu=ns32k -Amachine=ns32k"
-
-/* Print subsidiary information on the compiler version in use. */
-#define TARGET_VERSION fprintf (stderr, " (32000, GAS syntax)");
-
-\f
-/* ABSOLUTE PREFIX, IMMEDIATE_PREFIX and EXTERNAL_PREFIX can be defined
- to cover most NS32k addressing syntax variations. This way we don't
- need to redefine long macros in all the tm.h files for just slight
- variations in assembler syntax. */
-
-#ifndef ABSOLUTE_PREFIX
-#define ABSOLUTE_PREFIX '@'
-#endif
-
-#if defined(IMMEDIATE_PREFIX) && IMMEDIATE_PREFIX
-#define PUT_IMMEDIATE_PREFIX(FILE) putc(IMMEDIATE_PREFIX, FILE)
-#else
-#define PUT_IMMEDIATE_PREFIX(FILE)
-#endif
-#if defined(ABSOLUTE_PREFIX) && ABSOLUTE_PREFIX
-#define PUT_ABSOLUTE_PREFIX(FILE) putc(ABSOLUTE_PREFIX, FILE)
-#else
-#define PUT_ABSOLUTE_PREFIX(FILE)
-#endif
-#if defined(EXTERNAL_PREFIX) && EXTERNAL_PREFIX
-#define PUT_EXTERNAL_PREFIX(FILE) putc(EXTERNAL_PREFIX, FILE)
-#else
-#define PUT_EXTERNAL_PREFIX(FILE)
-#endif
-
-/* Run-time compilation parameters selecting different hardware subsets. */
-
-extern int target_flags;
-
-/* Macros used in the machine description to test the flags. */
-
-/* Compile 32081 insns for floating point (not library calls). */
-#define TARGET_32081 (target_flags & 1)
-#define TARGET_32381 (target_flags & 256)
-
-/* The use of multiply-add instructions is optional because there may
- * be cases where it produces worse code.
- */
-
-#define TARGET_MULT_ADD (target_flags & 512)
-
-/* Compile using rtd insn calling sequence.
- This will not work unless you use prototypes at least
- for all functions that can take varying numbers of args. */
-#define TARGET_RTD (target_flags & 2)
-
-/* Compile passing first two args in regs 0 and 1. */
-#define TARGET_REGPARM (target_flags & 4)
-
-/* Options to select type of CPU, for better optimization.
- The output is correct for any kind of 32000 regardless of these options. */
-#define TARGET_32532 (target_flags & 8)
-#define TARGET_32332 (target_flags & 16)
-
-/* Ok to use the static base register (and presume it's 0) */
-#define TARGET_SB ((target_flags & 32) == 0)
-#define TARGET_HIMEM (target_flags & 128)
-
-/* Compile using bitfield insns. */
-#define TARGET_BITFIELD ((target_flags & 64) == 0)
-
-/* 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 \
- { { "32081", 1, N_("Use hardware fp")}, \
- { "soft-float", -257, N_("Don't use hardware fp")}, \
- { "rtd", 2, N_("Alternative calling convention")}, \
- { "nortd", -2, N_("Use normal calling convention")}, \
- { "regparm", 4, N_("Pass some arguments in registers")}, \
- { "noregparm", -4, N_("Pass all arguments on stack")}, \
- { "32532", 24, N_("Optimize for 32532 cpu")}, \
- { "32332", 16, N_("Optimize for 32332 cpu")}, \
- { "32332", -8, 0}, \
- { "32032", -24, N_("Optimize for 32032")}, \
- { "sb", -32, \
- N_("Register sb is zero. Use for absolute addressing")}, \
- { "nosb", 32, N_("Do not use register sb")}, \
- { "bitfield", -64, N_("Do not use bit-field instructions")}, \
- { "nobitfield", 64, N_("Use bit-field instructions")}, \
- { "himem", 128, N_("Generate code for high memory")}, \
- { "nohimem", -128, N_("Generate code for low memory")}, \
- { "32381", 256, N_("32381 fpu")}, \
- { "mult-add", 512, N_("Use multiply-accumulate fp instructions")}, \
- { "nomult-add", -512, \
- N_("Do not use multiply-accumulate fp instructions") }, \
- { "src", 1024, N_("\"Small register classes\" kludge")}, \
- { "nosrc", -1024, N_("No \"Small register classes\" kludge")}, \
- { "", TARGET_DEFAULT, 0}}
-
-/* TARGET_DEFAULT is defined in encore.h, pc532.h, etc. */
-
-/* When we are generating PIC, the sb is used as a pointer
- to the GOT. 32381 is a superset of 32081 */
-
-#define OVERRIDE_OPTIONS \
-{ \
- if (flag_pic || TARGET_HIMEM) target_flags |= 32; \
- if (TARGET_32381) target_flags |= 1; \
- else target_flags &= ~512; \
-}
-
-/* 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.
-
- This is necessary in case the fixed or call-clobbered registers
- depend on target flags.
-
- You need not define this macro if it has no work to do.
-
- If the usage of an entire class of registers depends on the target
- flags, you may indicate this to GCC by using this macro to modify
- `fixed_regs' and `call_used_regs' to 1 for each of the registers in
- the classes which should not be used by GCC. Also define the macro
- `REG_CLASS_FROM_LETTER' to return `NO_REGS' if it is called with a
- letter for a class that shouldn't be used.
-
- (However, if this class is not included in `GENERAL_REGS' and all
- of the insn patterns whose constraints permit this class are
- controlled by target switches, then GCC will automatically avoid
- using these registers when the target switches are opposed to
- them.) */
-
-#define CONDITIONAL_REGISTER_USAGE \
-do \
- { \
- if (!TARGET_32081) \
- { \
- int regno; \
- \
- for (regno = F0_REGNUM; regno <= F0_REGNUM + 8; regno++) \
- fixed_regs[regno] = call_used_regs[regno] = 1; \
- } \
- if (!TARGET_32381) \
- { \
- int regno; \
- \
- for (regno = L1_REGNUM; regno <= L1_REGNUM + 8; regno++) \
- fixed_regs[regno] = call_used_regs[regno] = 1; \
- } \
- } \
-while (0)
-
-\f
-/* target machine storage layout */
-
-/* Define this if most significant bit is lowest numbered
- in instructions that operate on numbered bit-fields.
- This is not true on the ns32k. */
-#define BITS_BIG_ENDIAN 0
-
-/* Define this if most significant byte of a word is the lowest numbered. */
-/* That is not true on the ns32k. */
-#define BYTES_BIG_ENDIAN 0
-
-/* Define this if most significant word of a multiword number is lowest
- numbered. This is not true on the ns32k. */
-#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 32000, 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
-
-/* Boundary (in *bits*) on which stack pointer should be aligned. */
-#define STACK_BOUNDARY 32
-
-/* Allocation boundary (in *bits*) for the code of a function. */
-#define FUNCTION_BOUNDARY 16
-
-/* 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
-
-/* No data type wants to be aligned rounder than this. */
-#define BIGGEST_ALIGNMENT 32
-
-/* Set this nonzero if move instructions will actually fail to work
- when given unaligned data. National claims that the NS32032
- works without strict alignment, but rumor has it that operands
- crossing a page boundary cause unpredictable results. */
-#define STRICT_ALIGNMENT 1
-
-/* If bit field type is int, don't let it cross an int,
- and give entire struct the alignment of an int. */
-/* Required on the 386 since it doesn't have a full set of bitfield insns.
- (There is no signed extv insn.) */
-#define PCC_BITFIELD_TYPE_MATTERS 1
-\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 26
-
-/* 1 for registers that have pervasive standard uses
- and are not available for the register allocator.
- On the ns32k, these are the FP, SP, (SB and PC are not included here). */
-#define FIXED_REGISTERS {0, 0, 0, 0, 0, 0, 0, 0, \
- 0, 0, 0, 0, 0, 0, 0, 0, \
- 0, 0, 0, 0, 0, 0, 0, 0, \
- 1, 1}
-
-/* 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, 0, 0, 0, 0, 0, \
- 1, 1, 1, 1, 0, 0, 0, 0, \
- 1, 1, 0, 0, 0, 0, 0, 0, \
- 1, 1}
-
-/* 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", \
- "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", \
- "l1", "l1h","l3", "l3h","l5", "l5h","l7", "l7h", \
- "fp", "sp"}
-
-
-#define ADDITIONAL_REGISTER_NAMES \
-{{"l0", 8}, {"l2", 10}, {"l4", 12}, {"l6", 14}}
-
-/* l0-7 are not recognized by the assembler. These are the names to use,
- * but we don't want ambiguous names in REGISTER_NAMES
- */
-#define OUTPUT_REGISTER_NAMES \
-{"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \
- "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", \
- "f1", "l1h","f3", "l3h","f5", "l5h","f7", "f7h", \
- "fp", "sp"}
-
-#define REG_ALLOC_ORDER \
-{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 16, 10, 11, 18, 12, 13, 20, 14, 15, 22, 24, 25, 17, 19, 23}
-
-/* How to renumber registers for dbx and gdb.
- NS32000 may need more change in the numeration. XXX */
-
-#define DBX_REGISTER_NUMBER(REGNO) \
- ((REGNO) < L1_REGNUM? (REGNO) \
- : (REGNO) < FRAME_POINTER_REGNUM? (REGNO) - L1_REGNUM + 22 \
- : (REGNO) == FRAME_POINTER_REGNUM? 17 \
- : 16)
-
-/* dwarf2out.c can't understand the funny DBX register numbering.
- * We use dwarf2out.c for exception handling even though we use DBX
- * for debugging
- */
-#define DWARF_FRAME_REGNUM(REGNO) (REGNO)
-
-
-
-#define R0_REGNUM 0
-#define F0_REGNUM 8
-#define L1_REGNUM 16
-
-/* Specify the registers used for certain standard purposes.
- The values of these macros are register numbers. */
-
-/* NS32000 pc is not overloaded on a register. */
-/* #define PC_REGNUM */
-
-/* Register to use for pushing function arguments. */
-#define STACK_POINTER_REGNUM 25
-
-/* Base register for access to local variables of the function. */
-#define FRAME_POINTER_REGNUM 24
-
-
-/* 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 ns32k, all registers are 32 bits long except for the 32381 "long"
- registers but we treat those as pairs */
-#define LONG_FP_REGS_P(REGNO) ((REGNO) >= L1_REGNUM && (REGNO) < L1_REGNUM + 8)
-#define HARD_REGNO_NREGS(REGNO, MODE) \
- ((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. */
-#define HARD_REGNO_MODE_OK(REGNO, MODE) hard_regno_mode_ok (REGNO, MODE)
-
-/* 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.
-
- Early documentation says SI and DI are not tieable if some reg can
- be OK for SI but not for DI. However other ports (mips, i860, mvs
- and tahoe) don't meet the above criterion. Evidently the real
- requirement is somewhat laxer. Documentation was changed for gcc
- 2.8 but was not picked up by egcs (at least egcs 1.0). Having all
- integer modes tieable definitely generates faster code. */
-
-#define MODES_TIEABLE_P(MODE1, MODE2) \
- ((FLOAT_MODE_P(MODE1) && FLOAT_MODE_P(MODE2) \
- && (GET_MODE_UNIT_SIZE(MODE1) == GET_MODE_UNIT_SIZE(MODE2))) \
- || (!FLOAT_MODE_P(MODE1) && !FLOAT_MODE_P(MODE2)))
-
-/* 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 0
-
-/* Base register for access to arguments of the function. */
-#define ARG_POINTER_REGNUM 24
-
-/* Register in which static-chain is passed to a function. */
-#define STATIC_CHAIN_REGNUM 1
-
-/* Register in which address to store a structure value
- is passed to a function. */
-#define STRUCT_VALUE_REGNUM 2
-\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. */
-
-enum reg_class
-{ NO_REGS, GENERAL_REGS, FLOAT_REG0, LONG_FLOAT_REG0, FLOAT_REGS,
- FP_REGS, GEN_AND_FP_REGS, FRAME_POINTER_REG, STACK_POINTER_REG,
- GEN_AND_MEM_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_REG0", "LONG_FLOAT_REG0", "FLOAT_REGS", \
- "FP_REGS", "GEN_AND_FP_REGS", "FRAME_POINTER_REG", "STACK_POINTER_REG", \
- "GEN_AND_MEM_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}, /* NO_REGS */ \
- {0x00ff}, /* GENERAL_REGS */ \
- {0x100}, /* FLOAT_REG0 */ \
- {0x300}, /* LONG_FLOAT_REG0 */ \
- {0xff00}, /* FLOAT_REGS */ \
- {0xffff00}, /* FP_REGS */ \
- {0xffffff}, /* GEN_AND_FP_REGS */ \
- {0x1000000}, /* FRAME_POINTER_REG */ \
- {0x2000000}, /* STACK_POINTER_REG */ \
- {0x30000ff}, /* GEN_AND_MEM_REGS */ \
- {0x3ffffff} /* ALL_REGS */ \
- }
-
-#define SUBSET_P(CLASS1, CLASS2) \
- ((ns32k_reg_class_contents[CLASS1][0] \
- & ~ns32k_reg_class_contents[CLASS2][0]) == 0)
-
-/* 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) (regclass_map[REGNO])
-
-/* The class value for index registers, and the one for base regs. */
-
-#define INDEX_REG_CLASS GENERAL_REGS
-#define BASE_REG_CLASS GEN_AND_MEM_REGS
-
-/* Get reg_class from a letter such as appears in the machine description. */
-
-#define REG_CLASS_FROM_LETTER(C) \
- ((C) == 'u' ? FLOAT_REG0 \
- : (C) == 'v' ? LONG_FLOAT_REG0 \
- : (C) == 'f' ? FLOAT_REGS \
- : (C) == 'l' ? FP_REGS \
- : (C) == 'x' ? FRAME_POINTER_REG \
- : (C) == 'y' ? STACK_POINTER_REG \
- : 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.
-
- On the ns32k, these letters are used as follows:
-
- I : Matches integers which are valid shift amounts for scaled indexing.
- These are 0, 1, 2, 3 for byte, word, double, and quadword.
- Used for matching arithmetic shifts only on 32032 & 32332.
- J : Matches integers which fit a "quick" operand.
- K : Matches integers 0 to 7 (for inss and exts instructions).
- */
-
-#define CONST_OK_FOR_LETTER_P(VALUE, C) \
- ((VALUE) < 8 && (VALUE) + 8 >= 0 ? \
- ((C) == 'I' ? (!TARGET_32532 && 0 <= (VALUE) && (VALUE) <= 3) : \
- (C) == 'J' ? (VALUE) <= 7 : \
- (C) == 'K' ? 0 <= (VALUE) : 0) : 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) 1
-
-/* 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. */
-
-/* We return GENERAL_REGS instead of GEN_AND_MEM_REGS.
- The latter offers no real additional possibilities
- and can cause spurious secondary reloading. */
-
-#define PREFERRED_RELOAD_CLASS(X,CLASS) \
- ((CLASS) == GEN_AND_MEM_REGS ? GENERAL_REGS : (CLASS))
-
-/* Return the maximum number of consecutive registers
- needed to represent mode MODE in a register of class CLASS. */
-/* On the 32000, this is the size of MODE in words */
-
-#define CLASS_MAX_NREGS(CLASS, MODE) \
- ((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
-
-/* A C expression whose value is RTL representing the location of the
- incoming return address at the beginning of any function, before
- the prologue. This RTL is either a `REG', indicating that the
- return value is saved in `REG', or a `MEM' representing a location
- in the stack.
-
- You only need to define this macro if you want to support call
- frame debugging information like that provided by DWARF 2.
-
- Before the prologue, RA is at 0(sp). */
-
-#define INCOMING_RETURN_ADDR_RTX \
- gen_rtx (MEM, VOIDmode, gen_rtx (REG, VOIDmode, STACK_POINTER_REGNUM))
-
-/* A C expression whose value is RTL representing the value of the
- return address for the frame COUNT steps up from the current frame,
- after the prologue. FRAMEADDR is the frame pointer of the COUNT
- frame, or the frame pointer of the COUNT - 1 frame if
- `RETURN_ADDR_IN_PREVIOUS_FRAME' is defined.
-
- After the prologue, RA is at 4(fp) in the current frame. */
-
-#define RETURN_ADDR_RTX(COUNT, FRAME) \
- (gen_rtx (MEM, Pmode, gen_rtx (PLUS, Pmode, (FRAME), GEN_INT(4))))
-
-/* A C expression whose value is an integer giving the offset, in
- bytes, from the value of the stack pointer register to the top of
- the stack frame at the beginning of any function, before the
- prologue. The top of the frame is defined to be the value of the
- stack pointer in the previous frame, just before the call
- instruction.
-
- You only need to define this macro if you want to support call
- frame debugging information like that provided by DWARF 2. */
-
-#define INCOMING_FRAME_SP_OFFSET 4
-
-/* If we generate an insn to push BYTES bytes,
- this says how many the stack pointer really advances by.
- On the 32000, sp@- in a byte insn really pushes a BYTE. */
-#define PUSH_ROUNDING(BYTES) (BYTES)
-
-/* Offset of first parameter from the argument pointer register value. */
-#define FIRST_PARM_OFFSET(FNDECL) 8
-
-/* Value is the number of byte 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.
-
- On the 32000, the RET insn may be used to pop them if the number
- of args is fixed, but if the number is variable then the caller
- must pop them all. RET can't be used for library calls now
- because the library is compiled with the Unix compiler.
- Use of RET is a selectable option, since it is incompatible with
- standard Unix calling sequences. If the option is not selected,
- the caller must always pop the args.
-
- The attribute stdcall is equivalent to RTD on a per module basis. */
-
-#define RETURN_POPS_ARGS(FUNDECL,FUNTYPE,SIZE) \
- (ns32k_return_pops_args (FUNDECL, FUNTYPE, SIZE))
-
-/* 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. */
-
-/* On the 32000 the return value is in R0,
- or perhaps in F0 if there is fp support. */
-
-#define FUNCTION_VALUE(VALTYPE, FUNC) LIBCALL_VALUE(TYPE_MODE (VALTYPE))
-
-/* Define how to find the value returned by a library function
- assuming the value has mode MODE. */
-
-/* On the 32000 the return value is in R0,
- or perhaps F0 is there is fp support. */
-
-#define LIBCALL_VALUE(MODE) \
- gen_rtx_REG (MODE, \
- FLOAT_MODE_P(MODE) && TARGET_32081 ? F0_REGNUM: R0_REGNUM)
-
-/* Define this if PCC uses the nonreentrant convention for returning
- structure and union values. */
-
-#define PCC_STATIC_STRUCT_RETURN
-
-/* 1 if N is a possible register number for a function value.
- On the 32000, R0 and F0 are the only registers thus used. */
-
-#define FUNCTION_VALUE_REGNO_P(N) (((N) & ~8) == 0)
-
-/* 1 if N is a possible register number for function argument passing.
- On the 32000, no registers are used in this way. */
-
-#define FUNCTION_ARG_REGNO_P(N) 0
-\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.
-
- On the ns32k, this is a single integer, which is a number of bytes
- of arguments scanned so far. */
-
-#define CUMULATIVE_ARGS int
-
-/* 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.
-
- On the ns32k, the offset starts at 0. */
-
-#define INIT_CUMULATIVE_ARGS(CUM,FNTYPE,LIBNAME,INDIRECT) \
- ((CUM) = 0)
-
-/* 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) \
- ((CUM) += ((MODE) != BLKmode \
- ? (GET_MODE_SIZE (MODE) + 3) & ~3 \
- : (int_size_in_bytes (TYPE) + 3) & ~3))
-
-/* 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). */
-
-/* On the 32000 all args are pushed, except if -mregparm is specified
- then the first two words of arguments are passed in r0, r1.
- *NOTE* -mregparm does not work.
- It exists only to test register calling conventions. */
-
-#define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \
-((TARGET_REGPARM && (CUM) < 8) ? gen_rtx_REG ((MODE), (CUM) / 4) : 0)
-
-/* 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. */
-
-#define FUNCTION_ARG_PARTIAL_NREGS(CUM, MODE, TYPE, NAMED) \
-((TARGET_REGPARM && (CUM) < 8 \
- && 8 < ((CUM) + ((MODE) == BLKmode \
- ? int_size_in_bytes (TYPE) \
- : GET_MODE_SIZE (MODE)))) \
- ? 2 - (CUM) / 4 : 0)
-
-/* Output assembler code to FILE to increment profiler label # LABELNO
- for profiling a function entry.
-
- THIS DEFINITION FOR THE 32000 IS A GUESS. IT HAS NOT BEEN TESTED. */
-
-#define FUNCTION_PROFILER(FILE, LABELNO) \
- fprintf (FILE, "\taddr LP%d,r0\n\tbsr mcount\n", (LABELNO))
-
-/* 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.
-
- We use 0, because using 1 requires hair in output_function_epilogue()
- that is worse than the stack adjust we could save. */
-
-/* #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) \
-{ \
- int regno; \
- int offset = -4; \
- for (regno = 0; regno < L1_REGNUM; regno++) \
- if (regs_ever_live[regno] && ! call_used_regs[regno]) \
- offset += 4; \
- for (; regno < FRAME_POINTER_REGNUM; regno++) \
- if (regs_ever_live[regno] && ! call_used_regs[regno]) \
- offset += 8; \
- if (flag_pic && current_function_uses_pic_offset_table) \
- offset += 4; \
- (DEPTH) = (offset + get_frame_size () \
- + (get_frame_size () == 0 ? 0 : 4)); \
-}
-\f
-
-/* Output assembler code for a block containing the constant parts
- of a trampoline, leaving space for the variable parts. */
-
-/* On the 32k, the trampoline looks like this:
- addr 0(pc),r2
- jump @__trampoline
- .int STATIC
- .int FUNCTION
-Doing trampolines with a library assist function is easier than figuring
-out how to do stores to memory in reverse byte order (the way immediate
-operands on the 32k are stored). */
-
-#define TRAMPOLINE_TEMPLATE(FILE) \
-{ \
- fprintf (FILE, "\taddr 0(pc),r2\n" ); \
- fprintf (FILE, "\tjump " ); \
- PUT_ABSOLUTE_PREFIX (FILE); \
- fprintf (FILE, "__trampoline\n" ); \
- assemble_aligned_integer (UNITS_PER_WORD, const0_rtx); \
- assemble_aligned_integer (UNITS_PER_WORD, const0_rtx); \
-}
-
-/* Length in units of the trampoline for entering a nested function. */
-
-#define TRAMPOLINE_SIZE 20
-
-/* 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, 12)), CXT); \
- emit_move_insn (gen_rtx_MEM (SImode, plus_constant (TRAMP, 16)), FNADDR); \
-}
-
-/* This is the library routine that is used
- to transfer control from the trampoline
- to the actual nested function. */
-
-/* The function name __transfer_from_trampoline is not actually used.
- The function definition just permits use of "asm with operands"
- (though the operand list is empty). */
-#define TRANSFER_FROM_TRAMPOLINE \
-void \
-__transfer_from_trampoline () \
-{ \
- asm (".globl __trampoline"); \
- asm ("__trampoline:"); \
- asm ("movd 16(r2),tos"); \
- asm ("movd 12(r2),r1"); \
- asm ("ret 0"); \
-}
-\f
-/* Addressing modes, and classification of registers for them. */
-
-/* #define HAVE_POST_INCREMENT 0 */
-/* #define HAVE_POST_DECREMENT 0 */
-
-/* #define HAVE_PRE_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. */
-
-/* note that FP and SP cannot be used as an index. What about PC? */
-#define REGNO_OK_FOR_INDEX_P(REGNO) \
-((REGNO) < F0_REGNUM || (unsigned)reg_renumber[REGNO] < F0_REGNUM)
-#define REGNO_OK_FOR_BASE_P(REGNO) \
-((REGNO) < F0_REGNUM || (unsigned)reg_renumber[REGNO] < F0_REGNUM \
- || (REGNO) == FRAME_POINTER_REGNUM || (REGNO) == STACK_POINTER_REGNUM)
-
-#define FP_REG_P(X) \
- (GET_CODE (X) == REG && REGNO (X) >= F0_REGNUM && REGNO (X) < FRAME_POINTER_REGNUM)
-\f
-/* Maximum number of registers that can appear in a valid memory address. */
-
-#define MAX_REGS_PER_ADDRESS 2
-
-/* Recognize any constant value that is a valid address.
- This might not work on future ns32k processors as negative
- displacements are not officially allowed but a mode reserved
- to National. This works on processors up to 32532, though,
- and we don't expect any new ones in the series ;-( */
-
-#define CONSTANT_ADDRESS_P(X) \
- (GET_CODE (X) == LABEL_REF || GET_CODE (X) == SYMBOL_REF \
- || GET_CODE (X) == CONST \
- || (GET_CODE (X) == CONST_INT \
- && NS32K_DISPLACEMENT_P (INTVAL (X))))
-
-#define CONSTANT_ADDRESS_NO_LABEL_P(X) \
- (GET_CODE (X) == CONST_INT \
- && NS32K_DISPLACEMENT_P (INTVAL (X)))
-
-/* Return the register class of a scratch register needed to copy IN into
- or out of a register in CLASS in MODE. If it can be done directly,
- NO_REGS is returned. */
-
-#define SECONDARY_RELOAD_CLASS(CLASS,MODE,IN) \
- secondary_reload_class (CLASS, MODE, IN)
-
-/* Certain machines have the property that some registers cannot be
- copied to some other registers without using memory. Define this
- macro on those machines to be a C expression that is non-zero if
- objects of mode M in registers of CLASS1 can only be copied to
- registers of class CLASS2 by storing a register of CLASS1 into
- memory and loading that memory location into a register of CLASS2.
-
- On the ns32k, floating point regs can only be loaded through memory
-
- The movdf and movsf insns in ns32k.md copy between general and
- floating registers using the stack. In principle, we could get
- better code not allowing that case in the constraints and defining
- SECONDARY_MEMORY_NEEDED in practice, though the stack slots used
- are not available for optimization. */
-
-#if 0
-#define SECONDARY_MEMORY_NEEDED(CLASS1, CLASS2, M) \
- secondary_memory_needed(CLASS1, CLASS2, M)
-#endif
-
-/* SMALL_REGISTER_CLASSES is a run time option. This should no longer
- be necessay and should go when we have confidence that we won't run
- out of spill registers */
-#define SMALL_REGISTER_CLASSES (target_flags & 1024)
-
-/* A C expression whose value is nonzero if pseudos that have been
- assigned to registers of class CLASS would likely be spilled
- because registers of CLASS are needed for spill registers.
-
- The default definition won't do because class LONG_FLOAT_REG0 has two
- registers which are always accessed as a pair */
-
-#define CLASS_LIKELY_SPILLED_P(CLASS) \
- (reg_class_size[(int) (CLASS)] == 1 || (CLASS) == LONG_FLOAT_REG0)
-
-
-/* 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. */
-
-#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) < F0_REGNUM || REGNO (X) >= FIRST_PSEUDO_REGISTER)
-/* Nonzero if X is a hard reg that can be used as a base reg
- of if it is a pseudo reg. */
-#define REG_OK_FOR_BASE_P(X) (REGNO (X) < F0_REGNUM || REGNO (X) >= FRAME_POINTER_REGNUM)
-/* Nonzero if X is a floating point reg or a pseudo reg. */
-
-#else
-
-/* Nonzero if X is a hard reg that can be used as an index. */
-#define REG_OK_FOR_INDEX_P(X) REGNO_OK_FOR_INDEX_P (REGNO (X))
-/* Nonzero if X is a hard reg that can be used as a base reg. */
-#define REG_OK_FOR_BASE_P(X) REGNO_OK_FOR_BASE_P (REGNO (X))
-
-#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. */
-
-/* 1 if X is an address that we could indirect through. */
-/***** NOTE ***** There is a bug in the Sequent assembler which fails
- to fixup addressing information for symbols used as offsets
- from registers which are not FP or SP (or SB or PC). This
- makes _x(fp) valid, while _x(r0) is invalid. */
-
-#define INDIRECTABLE_1_ADDRESS_P(X) \
- (CONSTANT_ADDRESS_P (X) \
- || (GET_CODE (X) == REG && REG_OK_FOR_BASE_P (X)) \
- || (GET_CODE (X) == PLUS \
- && GET_CODE (XEXP (X, 0)) == REG \
- && REG_OK_FOR_BASE_P (XEXP (X, 0)) \
- && ((flag_pic || TARGET_HIMEM) ? \
- CONSTANT_ADDRESS_NO_LABEL_P (XEXP (X, 1)) \
- : \
- CONSTANT_ADDRESS_P (XEXP (X, 1))) \
- && (GET_CODE (X) != CONST_INT || NS32K_DISPLACEMENT_P (INTVAL (X)))))
-
-/* 1 if integer I will fit in a 4 byte displacement field.
- Strictly speaking, we can't be sure that a symbol will fit this range.
- But, in practice, it always will. */
-
-/* idall@eleceng.adelaide.edu.au says that the 32016 and 32032
- can handle the full range of displacements--it is only the addresses
- that have a limited range. So the following was deleted:
- (((i) <= 16777215 && (i) >= -16777216)
- || ((TARGET_32532 || TARGET_32332) && ...)) */
-#define NS32K_DISPLACEMENT_P(i) \
- ((i) < (1 << 29) && (i) >= - (1 << 29))
-
-/* Check for frame pointer or stack pointer. */
-#define MEM_REG(X) \
- (GET_CODE (X) == REG && (REGNO (X) == FRAME_POINTER_REGNUM \
- || REGNO(X) == STACK_POINTER_REGNUM))
-
-/* A memory ref whose address is the FP or SP, with optional integer offset,
- or (on certain machines) a constant address. */
-#define INDIRECTABLE_2_ADDRESS_P(X) \
- (GET_CODE (X) == MEM \
- && (((xfoo0 = XEXP (X, 0), MEM_REG (xfoo0)) \
- || (GET_CODE (xfoo0) == PLUS \
- && MEM_REG (XEXP (xfoo0, 0)) \
- && CONSTANT_ADDRESS_NO_LABEL_P (XEXP (xfoo0, 1)))) \
- || (TARGET_SB && CONSTANT_ADDRESS_P (xfoo0))))
-
-/* 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 (INDIRECTABLE_1_ADDRESS_P (X)) goto ADDR; \
- if (INDIRECTABLE_2_ADDRESS_P (X)) goto ADDR; \
- if (GET_CODE (X) == PLUS) \
- if (CONSTANT_ADDRESS_NO_LABEL_P (XEXP (X, 1))) \
- if (INDIRECTABLE_2_ADDRESS_P (XEXP (X, 0))) \
- goto ADDR; \
-}
-
-/* Go to ADDR if X is a valid address not using indexing.
- (This much is the easy part.) */
-#define GO_IF_INDEXING(X, MODE, ADDR) \
-{ register rtx xfoob = (X); \
- if (GET_CODE (xfoob) == PLUS && INDEX_TERM_P (XEXP (xfoob, 0), MODE)) \
- GO_IF_INDEXABLE_ADDRESS (XEXP (xfoob, 1), ADDR); \
- if (GET_CODE (xfoob) == PLUS && INDEX_TERM_P (XEXP (xfoob, 1), MODE)) \
- GO_IF_INDEXABLE_ADDRESS (XEXP (xfoob, 0), ADDR); } \
-
-#define GO_IF_INDEXABLE_ADDRESS(X, ADDR) \
-{ if (GET_CODE (X) == REG && REG_OK_FOR_BASE_P (X)) goto ADDR; \
- if (INDIRECTABLE_2_ADDRESS_P (X)) goto ADDR; \
- if (INDIRECTABLE_1_ADDRESS_P (X)) goto ADDR; \
-}
-
-/* 1 if PROD is either a reg times size of mode MODE
- or just a reg, if MODE is just one byte. Actually, on the ns32k,
- since the index mode is independent of the operand size,
- we can match more stuff...
-
- This macro's expansion uses the temporary variables xfoo0, xfoo1
- and xfoo2 that must be declared in the surrounding context. */
-#define INDEX_TERM_P(PROD, MODE) \
-((GET_CODE (PROD) == REG && REG_OK_FOR_INDEX_P (PROD)) \
- || (GET_CODE (PROD) == MULT \
- && (xfoo0 = XEXP (PROD, 0), xfoo1 = XEXP (PROD, 1), \
- (GET_CODE (xfoo1) == CONST_INT \
- && GET_CODE (xfoo0) == REG \
- && FITS_INDEX_RANGE (INTVAL (xfoo1)) \
- && REG_OK_FOR_INDEX_P (xfoo0)))))
-
-#define FITS_INDEX_RANGE(X) \
- ((xfoo2 = (unsigned)(X)-1), \
- ((xfoo2 < 4 && xfoo2 != 2) || xfoo2 == 7))
-
-/* Note that xfoo0, xfoo1, xfoo2 are used in some of the submacros above. */
-#define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR) \
-{ register rtx xfooy, xfoo0, xfoo1; \
- unsigned xfoo2; \
- xfooy = X; \
- if (flag_pic && cfun && ! current_function_uses_pic_offset_table \
- && global_symbolic_reference_mentioned_p (X, 1)) \
- current_function_uses_pic_offset_table = 1; \
- GO_IF_NONINDEXED_ADDRESS (xfooy, ADDR); \
- if (GET_CODE (xfooy) == PLUS) \
- { \
- if (CONSTANT_ADDRESS_NO_LABEL_P (XEXP (xfooy, 1)) \
- && GET_CODE (XEXP (xfooy, 0)) == PLUS) \
- xfooy = XEXP (xfooy, 0); \
- else if (CONSTANT_ADDRESS_NO_LABEL_P (XEXP (xfooy, 0)) \
- && GET_CODE (XEXP (xfooy, 1)) == PLUS) \
- xfooy = XEXP (xfooy, 1); \
- GO_IF_INDEXING (xfooy, MODE, ADDR); \
- } \
- else if (INDEX_TERM_P (xfooy, MODE)) \
- goto ADDR; \
- else if (GET_CODE (xfooy) == PRE_DEC) \
- { \
- if (REGNO (XEXP (xfooy, 0)) == STACK_POINTER_REGNUM) goto ADDR; \
- else abort (); \
- } \
-}
-
-/* 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 ns32k, we do nothing */
-
-#define LEGITIMIZE_ADDRESS(X,OLDX,MODE,WIN) {}
-
-/* Nonzero if the constant value X is a legitimate general operand
- when generating PIC code. It is given that flag_pic is on and
- that X satisfies CONSTANT_P or is a CONST_DOUBLE. */
-
-#define LEGITIMATE_PIC_OPERAND_P(X) \
- (((! current_function_uses_pic_offset_table \
- && symbolic_reference_mentioned_p (X))? \
- (current_function_uses_pic_offset_table = 1):0 \
- ), (! SYMBOLIC_CONST (X) \
- || GET_CODE (X) == SYMBOL_REF || GET_CODE (X) == LABEL_REF))
-
-#define SYMBOLIC_CONST(X) \
-(GET_CODE (X) == SYMBOL_REF \
- || GET_CODE (X) == LABEL_REF \
- || (GET_CODE (X) == CONST && symbolic_reference_mentioned_p (X)))
-
-/* Define this macro if references to a symbol must be treated
- differently depending on something about the variable or
- function named by the symbol (such as what section it is in).
-
- On the ns32k, if using PIC, mark a SYMBOL_REF for a non-global
- symbol or a code symbol. These symbols are referenced via pc
- and not via sb. */
-
-#define ENCODE_SECTION_INFO(DECL) \
-do \
- { \
- extern int flag_pic; \
- if (flag_pic) \
- { \
- rtx rtl = (TREE_CODE_CLASS (TREE_CODE (DECL)) != 'd' \
- ? TREE_CST_RTL (DECL) : DECL_RTL (DECL)); \
- SYMBOL_REF_FLAG (XEXP (rtl, 0)) \
- = (TREE_CODE_CLASS (TREE_CODE (DECL)) != 'd' \
- || ! TREE_PUBLIC (DECL)); \
- } \
- } \
-while (0)
-
-/* Go to LABEL if ADDR (a legitimate address expression)
- has an effect that depends on the machine mode it is used for.
- On the ns32k, only predecrement and postincrement address depend thus
- (the amount of decrement or increment being the length of the operand). */
-
-#define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL) \
- { if (GET_CODE (ADDR) == POST_INC || GET_CODE (ADDR) == PRE_DEC) \
- goto LABEL;}
-\f
-/* Specify the machine mode that this machine uses
- for the index in the tablejump instruction.
- HI mode is more efficient but the range is not wide enough for
- all programs. */
-#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 as 1 if `char' should by default be signed; else as 0. */
-#define DEFAULT_SIGNED_CHAR 1
-
-/* Max number of bytes we can move from memory to memory
- in one reasonably fast instruction. */
-#define MOVE_MAX 4
-
-/* The number of scalar move insns which should be generated instead
- of a string move insn or a library call.
-
- We have a smart movstrsi insn */
-#define MOVE_RATIO 0
-
-/* 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
-
-/* We assume that the store-condition-codes instructions store 0 for false
- and some other value for true. This is the value stored for true. */
-
-#define STORE_FLAG_VALUE 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
-
-/* Compute the cost of address ADDRESS. */
-
-#define ADDRESS_COST(RTX) calc_address_cost (RTX)
-
-/* 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. */
-
-#define CONST_COSTS(RTX,CODE,OUTER_CODE) \
- case CONST_INT: \
- if (INTVAL (RTX) <= 7 && INTVAL (RTX) >= -8) return 0; \
- if (INTVAL (RTX) < 0x2000 && INTVAL (RTX) >= -0x2000) \
- return 1; \
- case CONST: \
- case LABEL_REF: \
- case SYMBOL_REF: \
- return 3; \
- case CONST_DOUBLE: \
- return 5;
-\f
-/* Tell final.c how to eliminate redundant test instructions. */
-
-/* Here we define machine-dependent flags and fields in cc_status
- (see `conditions.h'). */
-
-/* This bit means that what ought to be in the Z bit
- should be tested in the F bit. */
-#define CC_Z_IN_F 04000
-
-/* This bit means that what ought to be in the Z bit
- is complemented in the F bit. */
-#define CC_Z_IN_NOT_F 010000
-
-/* 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) \
-{ if (GET_CODE (EXP) == SET) \
- { if (GET_CODE (SET_DEST (EXP)) == CC0) \
- { cc_status.flags = 0; \
- cc_status.value1 = SET_DEST (EXP); \
- cc_status.value2 = SET_SRC (EXP); \
- } \
- else if (GET_CODE (SET_SRC (EXP)) == CALL) \
- { CC_STATUS_INIT; } \
- else if (GET_CODE (SET_DEST (EXP)) == REG) \
- { if (cc_status.value1 \
- && reg_overlap_mentioned_p (SET_DEST (EXP), cc_status.value1)) \
- cc_status.value1 = 0; \
- if (cc_status.value2 \
- && reg_overlap_mentioned_p (SET_DEST (EXP), cc_status.value2)) \
- cc_status.value2 = 0; \
- } \
- else if (GET_CODE (SET_DEST (EXP)) == MEM) \
- { CC_STATUS_INIT; } \
- } \
- else if (GET_CODE (EXP) == PARALLEL \
- && GET_CODE (XVECEXP (EXP, 0, 0)) == SET) \
- { if (GET_CODE (SET_DEST (XVECEXP (EXP, 0, 0))) == CC0) \
- { cc_status.flags = 0; \
- cc_status.value1 = SET_DEST (XVECEXP (EXP, 0, 0)); \
- cc_status.value2 = SET_SRC (XVECEXP (EXP, 0, 0)); \
- } \
- else if (GET_CODE (SET_DEST (XVECEXP (EXP, 0, 0))) == REG) \
- { if (cc_status.value1 \
- && reg_overlap_mentioned_p (SET_DEST (XVECEXP (EXP, 0, 0)), cc_status.value1)) \
- cc_status.value1 = 0; \
- if (cc_status.value2 \
- && reg_overlap_mentioned_p (SET_DEST (XVECEXP (EXP, 0, 0)), cc_status.value2)) \
- cc_status.value2 = 0; \
- } \
- else if (GET_CODE (SET_DEST (XVECEXP (EXP, 0, 0))) == MEM) \
- { CC_STATUS_INIT; } \
- } \
- else if (GET_CODE (EXP) == CALL) \
- { /* all bets are off */ CC_STATUS_INIT; } \
- else { /* nothing happens? CC_STATUS_INIT; */} \
- if (cc_status.value1 && GET_CODE (cc_status.value1) == REG \
- && cc_status.value2 \
- && reg_overlap_mentioned_p (cc_status.value1, cc_status.value2)) \
- abort (); \
-}
-
-/* Describe the costs of the following register moves which are discouraged:
- 1.) Moves between the Floating point registers and the frame pointer and stack pointer
- 2.) Moves between the stack pointer and the frame pointer
- 3.) Moves between the floating point and general registers
-
- These all involve two memory references. This is worse than a memory
- to memory move (default cost 4)
- */
-
-#define REGISTER_MOVE_COST(MODE, CLASS1, CLASS2) \
- register_move_cost (CLASS1, CLASS2)
-
-#define OUTPUT_JUMP(NORMAL, NO_OV) \
-{ if (cc_status.flags & CC_NO_OVERFLOW) \
- return NO_OV; \
- return NORMAL; }
-\f
-/* Dividing the output into sections */
-
-/* Output before read-only data. */
-
-#define TEXT_SECTION_ASM_OP "\t.text"
-
-/* Output before writable data. */
-
-#define DATA_SECTION_ASM_OP "\t.data"
-
-/* Define the output Assembly Language */
-
-/* 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 of Data */
-
-/* This is how to output an assembler line defining an external/static
- address which is not in tree format (for collect.c). */
-
-/* The prefix to add to user-visible assembler symbols. */
-#define USER_LABEL_PREFIX "_"
-
-/* 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, "\tmovd %s,tos\n", 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, "\tmovd tos,%s\n", reg_names[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. */
-
-#ifndef COLLECT
-#define ASM_OUTPUT_LABEL(FILE,NAME) \
- do { assemble_name (FILE, NAME); fputs (":\n", FILE); } while (0)
-#else
-#define ASM_OUTPUT_LABEL(STREAM,NAME) \
-do { \
- fprintf (STREAM, "%s:\n", NAME); \
-} while (0)
-#endif
-
-/* This is how to output a command to make the user-level label named NAME
- defined for reference from other files. */
-
-#ifndef COLLECT
-#define ASM_GLOBALIZE_LABEL(FILE,NAME) \
- do { fputs (".globl ", FILE); assemble_name (FILE, NAME); fputs ("\n", FILE);} while (0)
-#else
-#define ASM_GLOBALIZE_LABEL(STREAM,NAME) \
-do { \
- fprintf (STREAM, "\t.globl\t%s\n", NAME); \
-} while (0)
-#endif
-
-/* This is how to output an internal numbered label where
- PREFIX is the class of label and NUM is the number within the class. */
-
-#define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM) \
- fprintf (FILE, "%s%d:\n", PREFIX, NUM)
-
-/* This is how to store into the string LABEL
- the symbol_ref name of an internal numbered label where
- PREFIX is the class of label and NUM is the number within the class.
- This is suitable for output with `assemble_name'. */
-
-#define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \
- sprintf (LABEL, "*%s%ld", PREFIX, (long) NUM)
-
-/* This is how to align the code that follows an unconditional branch. */
-
-#define LABEL_ALIGN_AFTER_BARRIER(LABEL) (2)
-
-/* This is how to output an element of a case-vector that is absolute.
- (The ns32k does not use such vectors,
- but we must define this macro anyway.) */
-
-#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. */
-/* ** Notice that the second element is LI format! */
-#define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \
- fprintf (FILE, "\t.long L%d-LI%d\n", VALUE, REL)
-
-/* This is how to output an assembler line
- that says to advance the location counter
- to a multiple of 2**LOG bytes. */
-
-#define ASM_OUTPUT_ALIGN(FILE,LOG) \
- fprintf (FILE, "\t.align %d\n", (LOG))
-
-#define ASM_OUTPUT_SKIP(FILE,SIZE) \
- fprintf (FILE, "\t.space %u\n", (SIZE))
-
-/* This says how to output an assembler line
- to define a global common symbol. */
-
-#define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED) \
-( fputs (".comm ", (FILE)), \
- assemble_name ((FILE), (NAME)), \
- fprintf ((FILE), ",%u\n", (ROUNDED)))
-
-/* This says how to output an assembler line
- to define a local common symbol. */
-
-#define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED) \
-( fputs (".lcomm ", (FILE)), \
- assemble_name ((FILE), (NAME)), \
- fprintf ((FILE), ",%u\n", (ROUNDED)))
-
-/* 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'. */
-
-/* %$ means print the prefix for an immediate operand. */
-
-#define PRINT_OPERAND_PUNCT_VALID_P(CODE) \
- ((CODE) == '$' || (CODE) == '?')
-
-#define PRINT_OPERAND(FILE, X, CODE) print_operand(FILE, X, CODE)
-
-/* Print a memory operand whose address is X, on file FILE. */
-
-#define PRINT_OPERAND_ADDRESS(FILE, ADDR) print_operand_address(FILE, ADDR)
-
-extern unsigned int ns32k_reg_class_contents[N_REG_CLASSES][1];
-extern enum reg_class regclass_map[FIRST_PSEUDO_REGISTER]; /* smallest class containing REGNO */
-
-/*
-Local variables:
-version-control: t
-End:
-*/
projects / msp430-gcc.git / blobdiff