+++ /dev/null
-/* Definitions of target machine for GNU compiler.
- Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999,
- 2000, 2001, 2002 Free Software Foundation, Inc.
- Contributed by O.M.Kellogg, DASA (oliver.kellogg@space.otn.dasa.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. */
-
-
-/* Names to predefine in the preprocessor for this target machine. */
-
-/* See tm-sun3.h, tm-sun2.h, tm-isi68.h for different CPP_PREDEFINES. */
-#define CPP_PREDEFINES ""
-
-/* Print subsidiary information on the compiler version in use. */
-#ifdef IEEE
-#define TARGET_VERSION fprintf (stderr, " (1750A, IEEE syntax)");
-#else
-#define TARGET_VERSION fprintf (stderr, " (MIL-STD-1750A)");
-#endif
-
-/* Run-time compilation parameters selecting different hardware subsets. */
-
-#define TARGET_SWITCHES \
- { {"vaxc-alignment", 2, N_("Use VAX-C alignment")}, \
- { "", TARGET_DEFAULT, NULL}}
-
-/* Default target_flags if no switches specified. */
-
-#ifndef TARGET_DEFAULT
-#define TARGET_DEFAULT 1
-#endif
-
-/*****************************************************************************/
-
-/* SPECIAL ADDITION FOR MIL-STD-1750A by O.M.Kellogg, 15-Apr-1993 */
-/* See file aux-output.c for the actual data instances. */
-struct datalabel_array {
- char *name;
- char value[14];
- int size;
-};
-struct jumplabel_array {
- int pc;
- int num;
-};
-enum section { Init, Normal, Konst, Static };
-#define DATALBL_ARRSIZ 256
-#define JMPLBL_ARRSIZ 256
-#ifndef __datalbl
-extern struct datalabel_array datalbl[DATALBL_ARRSIZ];
-extern struct jumplabel_array jmplbl[JMPLBL_ARRSIZ];
-extern int datalbl_ndx, jmplbl_ndx, label_pending, program_counter;
-extern enum section current_section;
-extern const char *const sectname[4];
-#endif
-/*--------------------------------------------------------------------*/
-
-/* target machine storage layout */
-
-/* Define this if most significant bit is lowest numbered
- in instructions that operate on numbered bit-fields.
- Though 1750 actually counts bits in big-endian fashion, the sign bit
- is still the most significant bit, which is leftmost. Therefore leaving
- this little-endian. Adjust short before assembler output when needed:
- e.g. in QImode, a GCC bit n is a 1750 bit (15-n). */
-#define BITS_BIG_ENDIAN 0
-
-/* Define this if most significant byte of a word is the lowest numbered. */
-/* For 1750 we can decide arbitrarily
- since there are no machine instructions for them. */
-#define BYTES_BIG_ENDIAN 0
-
-/* Define this if most significant word of a multiword value is lowest
- numbered.
- True for 1750. */
-#define WORDS_BIG_ENDIAN 1
-
-/* number of bits in an addressable storage unit */
-#define BITS_PER_UNIT 16
-
-/* 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 16
-
-/* Width of a word, in units (bytes). */
-#define UNITS_PER_WORD 1
-
-/* Width in bits of a pointer.
- See also the macro `Pmode' defined below. */
-#define POINTER_SIZE 16
-
-#define PTRDIFF_TYPE "int"
-
-/* Type to use for `size_t'. If undefined, uses `long unsigned int'. */
-#define SIZE_TYPE "int"
-
-/* 1750a preliminary. Ought to properly define the format in real.c. */
-#define TARGET_FLOAT_FORMAT UNKNOWN_FLOAT_FORMAT
-
-/* Allocation boundary (in *bits*) for storing pointers in memory. */
-#define POINTER_BOUNDARY 16
-
-/* Allocation boundary (in *bits*) for storing arguments in argument list. */
-/* 1750: should have had to make this 32 when BITS_PER_WORD is 32. */
-#define PARM_BOUNDARY 16
-
-/* Boundary (in *bits*) on which stack pointer should be aligned. */
-#define STACK_BOUNDARY 16
-
-/* 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 16
-
-/* No data type wants to be aligned rounder than this. */
-#define BIGGEST_ALIGNMENT 16
-
-/* Define this to 1 if move instructions will actually fail to work
- when given unaligned data. */
-#define STRICT_ALIGNMENT 0
-
-/* Define number of bits in most basic integer type.
- (If undefined, default is BITS_PER_WORD).
- #define INT_TYPE_SIZE 16 */
-
-/* Define number of bits in short integer type.
- (If undefined, default is half of BITS_PER_WORD). */
-#define SHORT_TYPE_SIZE 16
-
-/* Define number of bits in long integer type.
- (If undefined, default is BITS_PER_WORD). */
-#define LONG_TYPE_SIZE 32
-
-/* Define number of bits in long long integer type.
- (If undefined, default is twice BITS_PER_WORD). */
-/* 1750 PRELIMINARY : no processor support for `long long', therefore
- need to check out the long-long opencodings ! */
-#define LONG_LONG_TYPE_SIZE 64
-
-/* Define number of bits in char type.
- (If undefined, default is one fourth of BITS_PER_WORD). */
-#define CHAR_TYPE_SIZE 16
-
-/* Define number of bits in float type.
- (If undefined, default is BITS_PER_WORD). */
-#define FLOAT_TYPE_SIZE 32
-
-/* Define number of bits in double type.
- (If undefined, default is twice BITS_PER_WORD). */
-#define DOUBLE_TYPE_SIZE 48
-
-/*****************************************************************************/
-
-/* 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 16
-
-/* 1 for registers that have pervasive standard uses
- and are not available for the register allocator.
- R15 is the 1750A stack pointer. R14 is the frame pointer. */
-
-#define FIXED_REGISTERS \
- { 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.
- 1750: return value in R0 foll. (depending on size of retval).
- Should be possible to refine this (how many regs are actually used) */
-
-#define CALL_USED_REGISTERS \
- { 1, 1, 1, 1, 1, 1, 1, 1, \
- 1, 1, 1, 1, 1, 1, 1, 1 }
-
-/* Order in which to allocate registers. Each register must be
- listed once, even those in FIXED_REGISTERS. List frame pointer
- late and fixed registers last. Note that, in general, we prefer
- registers listed in CALL_USED_REGISTERS, keeping the others
- available for storage of persistent values. */
-
-/* #define REG_ALLOC_ORDER \
- { 2, 0, 1, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 }
- */
-
-/* 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.
- All 1750 registers are one word long. */
-#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) 1
-
-/* 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) 1
-
-/* Specify the registers used for certain standard purposes.
- The values of these macros are register numbers. */
-
-/* 1750A pc isn't overloaded on a register. */
-/* #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 0
-
-/* Base register for access to arguments of the function. */
-#define ARG_POINTER_REGNUM 14
-
-/* Define this if successive args to a function occupy decreasing addresses
- on the stack.
- #define ARGS_GROW_DOWNWARD
-*/
-
-/* Register in which static-chain is passed to a function. */
-#define STATIC_CHAIN_REGNUM 13
-
-/* Place in which caller passes the structure value address.
- 0 means push the value on the stack like an argument.
- #define STRUCT_VALUE 0
-*/
-
-/* Register in which address to store a structure value
- arrives in the function.
- #define STRUCT_VALUE_INCOMING 0
-*/
-
-/* Register in which address to store a structure value
- is passed to a function. */
-#define STRUCT_VALUE_REGNUM 12
-
-/* Define this to be 1 if all structure return values must be in memory. */
-#define DEFAULT_PCC_STRUCT_RETURN 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. */
-
-/* 1750 note: The names (BASE_REGS/INDEX_REGS) are used in their *gcc sense*
- (i.e. *opposite* to the MIL-STD-1750A defined meanings). This means that
- R1..R15 are called "base" regs and R12..R15 are "index" regs.
- Index reg mode (in the gcc sense) is not yet implemented (these are the
- 1750 "Base with Index Reg" instructions, LBX etc. See 1750.md)
-
- Here's an example to drive this point home: in "LBX B12,R5"
- B12 shall be called the "index" reg and R5 shall be the "base" reg.
- This naming inversion is due to the GCC defined capabilities of
- "Base" vs. "Index" regs. */
-
-enum reg_class { NO_REGS, R2, R0_1, INDEX_REGS, BASE_REGS, ALL_REGS, LIM_REG_CLASSES };
-
-#define N_REG_CLASSES (int) LIM_REG_CLASSES
-
-/* Since GENERAL_REGS is the same class as ALL_REGS,
- don't give it a different class number; just make it an alias. */
-#define GENERAL_REGS ALL_REGS
-
-/* Give names of register classes as strings for dump file. */
-
-#define REG_CLASS_NAMES \
- { "NO_REGS", "R2", "R0_1", "INDEX_REGS", "BASE_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.
- 1750 "index" (remember, in the *GCC* sense!) regs are R12 through R15.
- The only 1750 register not usable as BASE_REG is R0. */
-
-#define REG_CLASS_CONTENTS { {0}, {0x0004}, {0x0003}, {0xf000}, {0xfffe}, {0xffff} }
-
-/* 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) == 2 ? R2 : (REGNO) == 0 ? R0_1 : \
- (REGNO) >= 12 ? INDEX_REGS : (REGNO) > 0 ? BASE_REGS : ALL_REGS)
-
-/* The class value for index registers, and the one for base regs. */
-
-#define BASE_REG_CLASS BASE_REGS
-#define INDEX_REG_CLASS INDEX_REGS
-
-/* Get reg_class from a letter such as appears in the machine description.
- For the 1750, we have 'z' for R0_1, 't' for R2, 'b' for gcc Base regs
- and 'x' for gcc Index regs. */
-
-#define REG_CLASS_FROM_LETTER(C) ((C) == 't' ? R2 : \
- (C) == 'z' ? R0_1 : \
- (C) == 'b' ? BASE_REGS : \
- (C) == 'x' ? INDEX_REGS : NO_REGS)
-
-/* The letters I,J,K,.. to P 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.
-
- For the 1750A,
- `I' is used for ISP mode instructions,
- `J' is used for ISN mode instructions,
- `K' is used for the STC instruction's constant range,
- `L' is used for unsigned 8-bit address displacements in instructions
- of addressing mode "Base Relative",
- `M' is for IM mode instructions et al.,
- `O' is a synonym for (const_int 0). */
-
-#define CONST_OK_FOR_LETTER_P(VALUE, C) \
- ((C) == 'I' ? (VALUE) > 0 && (VALUE) <= 16 : \
- (C) == 'J' ? (VALUE) < 0 && (VALUE) >= -16 : \
- (C) == 'K' ? (VALUE) >= 0 && (VALUE) <= 15 : \
- (C) == 'L' ? (VALUE) >= 0 && (VALUE) <= 0xFF : \
- (C) == 'M' ? (VALUE) >= -0x8000 && (VALUE) <= 0x7FFF : \
- (C) == 'O' ? (VALUE) == 0 : 0)
-
-/* Similar, but for floating constants, and defining letter 'G'.
- Here VALUE is the CONST_DOUBLE rtx itself. */
-#define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) \
- ((C) == 'G' ? ((VALUE) == CONST0_RTX (HFmode) \
- || (VALUE) == CONST0_RTX (TQFmode)) : 0)
-
-/* Optional extra constraints for this machine.
-
- For the 1750, `Q' means that this is a memory operand consisting
- of the sum of an Index Register (in the GCC sense, i.e. R12..R15)
- and a constant in the range 0..255. This constraint is used for
- the Base Register with Offset address mode instructions (LB,STB,AB,..) */
-
-#define EXTRA_CONSTRAINT(OP, C) \
- ((C) == 'Q' && b_mode_operand (OP))
-
-/* 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.
- On the 1750A, this is the size of MODE in words,
- since class doesn't make any difference. */
-#define CLASS_MAX_NREGS(CLASS,MODE) GET_MODE_SIZE(MODE)
-
-/*****************************************************************************/
-
-/* 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 1
-
-/* Define this if the nominal address of the stack frame
- is at the high-address end of the local variables;
- 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 1
-
-/* This is the default anyway:
- #define DYNAMIC_CHAIN_ADDRESS(FRAMEADDR) FRAMEADDR
-*/
-
-/* If we generate an insn to push BYTES bytes,
- this says how many the stack pointer really advances by.
- 1750 note: what GCC calls a "byte" is really a 16-bit word,
- because BITS_PER_UNIT is 16. */
-
-#define PUSH_ROUNDING(BYTES) (BYTES)
-
-/* Define this macro if functions should assume that stack space has
- been allocated for arguments even when their values are passed in
- registers.
- Size, in bytes, of the area reserved for arguments passed in
- registers for the function represented by FNDECL.
- #define REG_PARM_STACK_SPACE(FNDECL) 14 */
-
-/* Define this if it is the responsibility of the caller to allocate
- the area reserved for arguments passed in registers.
- #define OUTGOING_REG_PARM_STACK_SPACE */
-
-/* Offset of first parameter from the argument pointer register value.
- 1750 note:
- Parameters appear in reversed order on the frame (so when they are
- popped, they come off in the normal left-to-right order.)
- Computed as follows:
- one word for the caller's (PC+1) (i.e. the return address)
- plus total size of called function's "auto" variables
- plus one word for the caller's frame pointer (i.e. the old FP) */
-
-#define FIRST_PARM_OFFSET(FNDECL) \
- (1 + get_frame_size() + 1)
-
-/* Value is 1 if returning from a function call automatically
- pops the arguments described by the number-of-args field in the 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.
-*/
-
-#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), 0)
-
-/* Define how to find the value returned by a library function
- assuming the value has mode MODE. */
-/* 1750 note: no libcalls yet */
-
-#define LIBCALL_VALUE(MODE) printf("LIBCALL_VALUE called!\n"), \
- gen_rtx_REG (MODE, 0)
-
-/* 1 if N is a possible register number for a function value. */
-
-#define FUNCTION_VALUE_REGNO_P(N) ((N) == 0)
-
-/* 1 if the tree TYPE should be returned in memory instead of in regs.
- #define RETURN_IN_MEMORY(TYPE) \
- (int_size_in_bytes(TYPE) > 12)
-*/
-
-/* 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 function argument passing. */
-
-#define FUNCTION_ARG_REGNO_P(N) ((N) < 12)
-
-/*****************************************************************************/
-
-/* 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.
-
- For 1750A, this is a single integer, which is a number of words
- 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.
-
- For 1750A, 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.)
-
- 1750 note: "int_size_in_bytes()" returns a unit relative to
- BITS_PER_UNIT, so in our case not bytes, but 16-bit words. */
-
-#define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \
- ((CUM) += (MODE) == BLKmode ? int_size_in_bytes(TYPE) : GET_MODE_SIZE(MODE))
-
-/* 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). */
-
-#define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) function_arg (CUM,MODE,TYPE,NAMED)
-
-/* Define the following macro if function calls on the target machine
- do not preserve any registers; in other words, if `CALL_USED_REGISTERS'
- has 1 for all registers. This macro enables `-fcaller-saves' by
- default. Eventually that option will be enabled by default on all
- machines and both the option and this macro will be eliminated. */
-
-#define DEFAULT_CALLER_SAVES
-
-/************* 1750: PROFILER HANDLING NOT YET DONE !!!!!!! *************/
-/* Output assembler code to FILE to increment profiler label # LABELNO
- for profiling a function entry. */
-
-#define FUNCTION_PROFILER(FILE, LABELNO) \
- fprintf (FILE, "; got into FUNCTION_PROFILER with label # %d\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. */
-
-#define EXIT_IGNORE_STACK 0
-
-/* If the memory address ADDR is relative to the frame pointer,
- correct it to be relative to the stack pointer instead.
- This is for when we don't use a frame pointer.
- ADDR should be a variable name.
-
- #define FIX_FRAME_POINTER_ADDRESS(ADDR,DEPTH)
-*/
-
-/* 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 = 0
-*/
-
-#define ELIMINABLE_REGS { \
- { ARG_POINTER_REGNUM, STACK_POINTER_REGNUM }, \
- { ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM }, \
- { FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM } }
-
-#define CAN_ELIMINATE(FROM, TO) 1
-
-#define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
- OFFSET = (TO == STACK_POINTER_REGNUM) ? -1 : 0
-
-
-/* Output assembler code for a block containing the constant parts
- of a trampoline, leaving space for the variable parts. */
-
-#define TRAMPOLINE_TEMPLATE(FILE) fprintf(FILE,"TRAMPOLINE_TEMPLATE called\n")
-
-/* Length in units of the trampoline for entering a nested function. */
-
-#define TRAMPOLINE_SIZE 2
-
-/* 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) printf("INITIALIZE_TRAMPO called\n")
-/* { \
- emit_move_insn (gen_rtx_MEM (QImode, plus_constant (TRAMP, 1)), CXT); \
- emit_move_insn (gen_rtx_MEM (QImode, plus_constant (TRAMP, 6)), FNADDR); \
-} */
-
-
-/*****************************************************************************/
-
-/* Addressing modes, and classification of registers for them. */
-
-/* 1750 doesn't have a lot of auto-incr./decr. - just for the stack ptr. */
-
-/* #define HAVE_POST_INCREMENT 0 just for R15 (stack pointer) */
-/* #define HAVE_POST_DECREMENT 0 */
-/* #define HAVE_PRE_DECREMENT 0 just for R15 (stack pointer) */
-/* #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.
- 1750 note: The words BASE and INDEX are used in their GCC senses:
- The "Index Registers", R12 through R15, are used in the 1750
- instructions LB,STB,AB,SBB,MB,DB,LBX,STBX,...
- */
-
-#define REGNO_OK_FOR_BASE_P(REGNO) \
- (((REGNO) > 0 && (REGNO) <= 15) || \
- (reg_renumber[REGNO] > 0 && reg_renumber[REGNO] <= 15))
-#define REGNO_OK_FOR_INDEX_P(REGNO) \
- (((REGNO) >= 12 && (REGNO) <= 15) || \
- (reg_renumber[REGNO] >= 12 && reg_renumber[REGNO] <= 15))
-
-/* Now macros that check whether X is a register and also,
- strictly, whether it is in a specified class. */
-
-/* 1 if X is an address register */
-
-#define ADDRESS_REG_P(X) (REG_P (X) && REGNO_OK_FOR_BASE_P (REGNO (X)))
-
-/* Maximum number of registers that can appear in a valid memory address. */
-#define MAX_REGS_PER_ADDRESS 1
-
-/* Recognize any constant value that is a valid address. */
-
-#define CONSTANT_ADDRESS_P(X) CONSTANT_P(X)
-
-/* 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. */
-
-#ifdef REG_OK_STRICT
-
-/* 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))
-
-#else
-
-/* 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) >= 12)
-/* 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) > 0)
-
-#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.
-
- 1750 note: Currently we don't implement address expressions that use
- GCC "Index"-class regs. To be expanded to handle the 1750 "Base with Index"
- instructions (see also MAX_REGS_PER_ADDRESS and others). */
-
-#define GO_IF_BASED_ADDRESS(X, ADDR) { \
- if ((GET_CODE (X) == REG && REG_OK_FOR_BASE_P(X))) \
- goto ADDR; \
- if (GET_CODE (X) == PLUS) \
- { register rtx x0 = XEXP(X,0), x1 = XEXP(X,1); \
- if ((REG_P(x0) && REG_OK_FOR_BASE_P(x0) && CONSTANT_ADDRESS_P(x1)) \
- || (REG_P(x1) && REG_OK_FOR_BASE_P(x1) && CONSTANT_ADDRESS_P(x0))) \
- goto ADDR; } }
-
-#define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR) { \
- if (CONSTANT_ADDRESS_P(X)) goto ADDR; \
- GO_IF_BASED_ADDRESS(X,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. */
-
-#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.
- On the 68000, only predecrement and postincrement address depend thus
- (the amount of decrement or increment being the length of the operand). */
-/* 1750: not used. */
-
-#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 QImode
-
-/* 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 65536
-
-/* If a memory-to-memory move would take MOVE_RATIO or more simple
- move-instruction pairs, we will do a movstr or libcall instead. */
-#define MOVE_RATIO 4
-
-/* 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 1 */
-
-/* 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
-
-/* When a prototype says `char' or `short', really pass an `int'.
- 1750: for now, `char' is 16 bits wide anyway. */
-#define PROMOTE_PROTOTYPES 0
-
-/* 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 QImode
-
-/* A function address in a call instruction
- is a 16-bit address (for indexing purposes) */
-#define FUNCTION_MODE QImode
-
-/* 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: \
- return (INTVAL(RTX) >= -16 && INTVAL(RTX) <= 16) ? 1 : 3; \
- case CONST: \
- case LABEL_REF: \
- case SYMBOL_REF: \
- return 3; \
- case CONST_DOUBLE: \
- return 4;
-
-#define ADDRESS_COST(ADDRESS) (memop_valid (ADDRESS) ? 3 : 10)
-
-#define REGISTER_MOVE_COST(MODE,FROM,TO) 2
-
-#define MEMORY_MOVE_COST(M,C,I) 4
-
-/* Tell final.c how to eliminate redundant test instructions. */
-
-/* Here we define machine-dependent flags and fields in cc_status
- (see `conditions.h'). */
-/* MIL-STD-1750: none -- just has the garden variety C,P,Z,N flags. */
-
-/* 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.
- 1750: See file out-1750a.c for notice_update_cc(). */
-
-#define NOTICE_UPDATE_CC(EXP, INSN) notice_update_cc(EXP)
-
-/**********************************************/
-/* Produce debugging info in the DWARF format
- #define DWARF_DEBUGGING_INFO
-*/
-
-/*****************************************************************************/
-
-/* Control the assembler format that we output. */
-
-/* Output at beginning of assembler file. */
-
-#define ASM_FILE_START(FILE) { \
- char *p2, name[40]; \
- const char *p; \
- if ((p = strrchr(main_input_filename,'/')) != NULL ? 1 : \
- (p = strrchr(main_input_filename,']')) != NULL) \
- p++; \
- else \
- p = main_input_filename; \
- strcpy(name,p); \
- if ((p2 = strchr(name,'.'))) \
- *p2 = '\0'; \
- fprintf(FILE,"\tname %s\n",name); \
- fprintf(FILE,"\tnolist\n\tinclude \"ms1750.inc\"\n\tlist\n\n"); \
- fprintf(FILE,"\tglobal\t__main\n\n"); }
-
-/* Output at end of assembler file.
- For 1750, we copy the data labels accrued in datalbl[] from the Constants
- section (Konst) to the Writable-Data section (Static). */
-
-#define ASM_FILE_END(FILE) \
- do { \
- if (datalbl_ndx >= 0) { \
- int i, cum_size=0; \
- fprintf(FILE,"\n\tstatic\ninit_srel\n"); \
- for (i = 0; i <= datalbl_ndx; i++) { \
- if (datalbl[i].name == NULL) \
- { \
- fprintf(stderr, "asm_file_end internal datalbl err\n"); \
- exit (0); \
- } \
- fprintf(FILE,"%s \tblock %d\n", \
- datalbl[i].name,datalbl[i].size); \
- cum_size += datalbl[i].size; \
- } \
- fprintf(FILE,"\n\tinit\n"); \
- fprintf(FILE,"\tlim\tr0,init_srel\n"); /* destin. */ \
- fprintf(FILE,"\tlim\tr1,%d\n",cum_size); /* count */ \
- fprintf(FILE,"\tlim\tr2,K%s\n",datalbl[0].name); /* source */ \
- fprintf(FILE,"\tmov\tr0,r2\n"); \
- fprintf(FILE,"\n\tnormal\n"); \
- datalbl_ndx = -1; /* reset stuff */ \
- for (i = 0; i < DATALBL_ARRSIZ; i++) \
- datalbl[i].size = 0; \
- } \
- fprintf(FILE,"\n\tend\n"); \
- } while (0)
-
-/* Output to assembler file text saying following lines
- may contain character constants, extra white space, comments, etc. */
-
-#define ASM_APP_ON "; ASM_APP_ON\n"
-
-/* Output to assembler file text saying following lines
- no longer contain unusual constructs. */
-
-#define ASM_APP_OFF "; ASM_APP_OFF\n"
-
-
-#define EXTRA_SECTIONS in_readonly_data
-
-#define EXTRA_SECTION_FUNCTIONS \
- extern void const_section PARAMS ((void)); \
- void const_section() \
- { \
- fprintf(asm_out_file,"\tkonst\n"); \
- current_section = Konst; \
- } \
- void check_section(sect) \
- enum section sect; \
- { \
- if (current_section != sect) { \
- fprintf(asm_out_file,"\t%s\n",sectname[(int)sect]); \
- current_section = sect; \
- } \
- switch (sect) { \
- case Init: \
- case Normal: \
- in_section = in_text; \
- break; \
- case Static: \
- in_section = in_data; \
- break; \
- case Konst: \
- in_section = in_readonly_data; \
- break; \
- } \
- }
-
-
-/* Function that switches to the read-only data section (optional) */
-#define READONLY_DATA_SECTION const_section
-
-/* Output before program init section */
-#define INIT_SECTION_ASM_OP "\n\tinit ; init_section\n"
-
-/* Output before program text section */
-#define TEXT_SECTION_ASM_OP "\n\tnormal ; text_section\n"
-
-/* Output before writable data.
- 1750 Note: This is actually read-only data. The copying from read-only
- to writable memory is done elsewhere (in ASM_FILE_END.)
- */
-#define DATA_SECTION_ASM_OP "\n\tkonst ; data_section\n"
-
-/* How to refer to registers in assembler output.
- This sequence is indexed by compiler's hard-register-number (see above). */
-
-#define REGISTER_NAMES \
- { "0", "1", "2", "3", "4", "5", "6", "7", \
- "8", "9","10","11","12","13","14","15" }
-
-/****************** Assembler output formatting **********************/
-
-#define ASM_COMMENT_START ";"
-
-#define ASM_OUTPUT_OPCODE(FILE,PTR) do { \
- while (*(PTR) != '\0' && *(PTR) != ' ') { \
- putc (*(PTR), FILE); \
- (PTR)++; \
- } \
- while (*(PTR) == ' ') \
- (PTR)++; \
- putc ('\t', FILE); \
- program_counter += 2; \
- } while (0)
-
-#define ASM_DECLARE_FUNCTION_NAME(FILE,NAME,DECL) \
- fprintf(FILE,"%s\n",NAME)
-
-/* 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. */
-/* 1750 note: Labels are prefixed with a 'K'. This is because handling
- has been changed for labels to be output in the "Constants" section
- (named "Konst"), and special initialization code takes care of copying
- the Const-section data into the writable data section (named "Static").
- In the Static section we therefore have the true label names (i.e.
- not prefixed with 'K'). */
-
-#define ASM_OUTPUT_LABEL(FILE,NAME) \
- do { if (NAME[0] == '.') { \
- fprintf(stderr,"Oops! label %s can't begin with '.'\n",NAME); \
- abort(); \
- } \
- else { \
- check_section(Konst); \
- fprintf(FILE,"K%s\n",NAME); \
- fflush(FILE); \
- datalbl[++datalbl_ndx].name = (char *)xstrdup (NAME);\
- datalbl[datalbl_ndx].size = 0; \
- label_pending = 1; \
- } \
- } 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 { \
- fprintf (FILE, "\tglobal %s\t; export\n", NAME); \
- } while (0)
-
-/* The prefix to add to user-visible assembler symbols. */
-
-#define USER_LABEL_PREFIX ""
-
-/* 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) \
- do { \
- if (strcmp(PREFIX,"LC") == 0) { \
- label_pending = 1; \
- datalbl[++datalbl_ndx].name = (char *) xmalloc (9);\
- sprintf(datalbl[datalbl_ndx].name,"LC%d",NUM); \
- datalbl[datalbl_ndx].size = 0; \
- check_section(Konst); \
- fprintf(FILE,"K%s%d\n",PREFIX,NUM); \
- } \
- else if (find_jmplbl(NUM) < 0) { \
- jmplbl[++jmplbl_ndx].num = NUM; \
- jmplbl[jmplbl_ndx].pc = program_counter; \
- fprintf(FILE, "%s%d\n", PREFIX, NUM); \
- } \
- fflush(FILE); \
- } while (0)
-
-
-/* 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%d", PREFIX, NUM)
-
-/* Output at the end of a jump table.
- 1750: To be uncommented when we can put jump tables in Konst.
- #define ASM_OUTPUT_CASE_END(FILE,NUM,INSN) \
- fprintf (FILE, "\tnormal\t; case_end\n")
- */
-
-/* Currently, it is not possible to put jump tables in section Konst.
- This is because there is a one-to-one relation between sections Konst
- and Static (i.e., all Konst data are copied to Static, and the order
- of data is the same between the two sections.) However, jump tables are
- not copied to Static, which destroys the equivalence between Konst and
- Static. When a more intelligent Konst-to-Static copying mechanism is
- implemented (i.e. one that excludes the copying of jumptables), then
- ASM_OUTPUT_CASE_END shall be defined, and JUMP_LABELS_IN_TEXT_SECTION
- shall be undefined. */
-
-#define JUMP_TABLES_IN_TEXT_SECTION 1
-
-/* This is how to output an assembler line defining a string constant. */
-
-#define ASM_OUTPUT_ASCII(FILE, PTR, LEN) do { \
- int i; \
- if (label_pending) \
- label_pending = 0; \
- datalbl[datalbl_ndx].size += LEN; \
- for (i = 0; i < (int) LEN; i++) { \
- if ((i % 15) == 0) { \
- if (i != 0) \
- fprintf(FILE,"\n"); \
- fprintf(FILE,"\tdata\t"); \
- } \
- else \
- fprintf(FILE,","); \
- if (PTR[i] >= 32 && PTR[i] < 127) \
- fprintf(FILE,"'%c'",PTR[i]); \
- else \
- fprintf(FILE,"%d",PTR[i]); \
- } \
- fprintf(FILE,"\n"); \
- } 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, "\tPSHM R%s,R%s\n", reg_names[REGNO], "FIXME: missing arg")
-
-/* 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, "\tPOPM R%s,R%s\n", reg_names[REGNO], "FIXME: missing arg")
-
-/* This is how to output an element of a case-vector that is absolute. */
-
-#define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \
- fprintf (FILE, "\tdata\tL%d ;addr_vec_elt\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, "\tdata\tL%d-L%d ;addr_diff_elt\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,"; in ASM_OUTPUT_ALIGN: pwr_of_2_bytcnt=%d\n",LOG)
-
-#define ASM_OUTPUT_SKIP(FILE,SIZE) \
- fprintf(FILE,"; in ASM_OUTPUT_SKIP: size=%d\n",SIZE)
-
-/* This says how to output an assembler line
- to define a global common symbol. */
-
-#define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED) do { \
- check_section(Static); \
- fprintf (FILE, "\tcommon %s,%d\n", NAME, SIZE); \
- } while (0)
-
-#define ASM_OUTPUT_EXTERNAL(FILE, DECL, NAME) do { \
- fprintf (FILE, "\tglobal %s\t; import\n", NAME); \
- } while (0)
-
-/* This says how to output an assembler line
- to define a local common symbol. */
-
-#define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED) do { \
- check_section (Static); \
- fprintf(FILE,"%s \tblock %d\t; local common\n",NAME,SIZE); \
- } while (0)
-
-/* 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 operand X (an rtx) in assembler syntax to file FILE.
- CODE is a letter or dot (`z' in `%z0') or 0 if no letter was specified.
- For `%' followed by punctuation, CODE is the punctuation and X is null.
- 1750 note: there are three special CODE characters:
- 'D', 'E': print a reference to a floating point constant (D=double,
- E=single precision) label name
- 'F': print a label defining a floating-point constant value
- 'J': print the absolute value of a negative INT_CONST
- (this is used in LISN/CISN/MISN/SISP and others)
- 'Q': print a 1750 Base-Register-with-offset instruction's operands
- */
-
-#define PRINT_OPERAND(FILE, X, CODE) print_operand(FILE,X,CODE)
-#define PRINT_OPERAND_ADDRESS(FILE, ADDR) print_operand_address(FILE,ADDR)
-
-/* Convert a REAL_VALUE_TYPE to the target 1750a float format. */
-#define REAL_VALUE_TO_TARGET_SINGLE(IN, OUT) \
- ((OUT) = real_value_to_target_single(IN))
-
-/* Convert a REAL_VALUE_TYPE to the target 1750a extended float format. */
-#define REAL_VALUE_TO_TARGET_DOUBLE(IN, OUT) \
- real_value_to_target_double((IN), (OUT))
projects / msp430-gcc.git / blobdiff