X-Git-Url: https://oss.titaniummirror.com/gitweb/?a=blobdiff_plain;f=gcc%2Fconfig%2F1750a%2F1750a.h;fp=gcc%2Fconfig%2F1750a%2F1750a.h;h=0000000000000000000000000000000000000000;hb=6fed43773c9b0ce596dca5686f37ac3fc0fa11c0;hp=451b819aae6dbf9a6ac0a3400ce06b4aac39cbf3;hpb=27b11d56b743098deb193d510b337ba22dc52e5c;p=msp430-gcc.git diff --git a/gcc/config/1750a/1750a.h b/gcc/config/1750a/1750a.h deleted file mode 100644 index 451b819a..00000000 --- a/gcc/config/1750a/1750a.h +++ /dev/null @@ -1,1156 +0,0 @@ -/* 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))