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Diffstat (limited to 'gcc/config/spur/spur.h')
| -rw-r--r-- | gcc/config/spur/spur.h | 1045 |
1 files changed, 0 insertions, 1045 deletions
diff --git a/gcc/config/spur/spur.h b/gcc/config/spur/spur.h deleted file mode 100644 index 2627583..0000000 --- a/gcc/config/spur/spur.h +++ /dev/null @@ -1,1045 +0,0 @@ -/* Definitions of target machine for GNU compiler, for SPUR chip. - Copyright (C) 1988, 1995, 1996, 1998, 1999, 2000 Free Software Foundation, Inc. - -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 "-Dspur -Acpu(spur) -Amachine(spur)" - -/* Link with libg.a when debugging, for dbx's sake. */ - -#define LIB_SPEC "%{g:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p} " - -/* Print subsidiary information on the compiler version in use. */ -#define TARGET_VERSION fprintf (stderr, " (spur)"); - -/* Run-time compilation parameters selecting different hardware subsets. - - On the SPUR, we don't yet need any. */ - -extern int target_flags; - -/* Nonzero if we should generate code to use the fpu. */ -#define TARGET_FPU (target_flags & 1) - -/* Nonzero if we should expand constant shifts into series of shift - instructions. */ -#define TARGET_EXPAND_SHIFTS (target_flags & 2) - -/* Nonzero if we should generate long jumps for compares. */ -#define TARGET_LONG_JUMPS (target_flags & 4) - -/* 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 \ - { {"fpu", 1}, \ - {"soft-float", -1}, \ - {"expand-shifts", 2}, \ - {"lib-shifts", -2}, \ - {"long-jumps", 4}, \ - {"short-jumps", -4}, \ - { "", TARGET_DEFAULT}} - -#define TARGET_DEFAULT 0 - -/* target machine storage layout */ - -/* Define this if most significant bit is lowest numbered - in instructions that operate on numbered bit-fields. - This is a moot question on the SPUR due to the lack of bit-field insns. */ -#define BITS_BIG_ENDIAN 0 - -/* Define this if most significant byte of a word is the lowest numbered. */ -/* That is not true on SPUR. */ -#define BYTES_BIG_ENDIAN 0 - -/* Define this if most significant word of a multiword number is the lowest - numbered. */ -/* For SPUR we can decide arbitrarily - since there are no machine instructions for them. */ -#define WORDS_BIG_ENDIAN 0 - -/* number of bits in an addressable storage unit */ -#define BITS_PER_UNIT 8 - -/* Width in bits of a "word", which is the contents of a machine register. - Note that this is not necessarily the width of data type `int'; - if using 16-bit ints on a 68000, this would still be 32. - But on a machine with 16-bit registers, this would be 16. */ -#define BITS_PER_WORD 32 - -/* Width of a word, in units (bytes). */ -#define UNITS_PER_WORD 4 - -/* Width in bits of a pointer. - See also the macro `Pmode' defined below. */ -#define POINTER_SIZE 32 - -/* Allocation boundary (in *bits*) for storing arguments in argument list. */ -#define PARM_BOUNDARY 64 - -/* Boundary (in *bits*) on which stack pointer should be aligned. */ -#define STACK_BOUNDARY 64 - -/* Allocation boundary (in *bits*) for the code of a function. */ -#define FUNCTION_BOUNDARY 32 - -/* 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 32 - -/* No data type wants to be aligned rounder than this. */ -#define BIGGEST_ALIGNMENT 64 - -/* Set this nonzero if move instructions will actually fail to work - when given unaligned data. */ -#define STRICT_ALIGNMENT 1 - -/* 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. - - SPUR has 32 fullword registers and 15 floating point registers. */ - -#define FIRST_PSEUDO_REGISTER 47 - -/* 1 for registers that have pervasive standard uses - and are not available for the register allocator. - On SPUR, this includes all the global registers - and the callee return address register. */ -#define FIXED_REGISTERS \ - {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \ - 1, 0, 0, 0, 0, 0, \ - 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, \ - 1, 0, 0, 0, 0, 0, \ - 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0} - -/* 1 for registers not available across function calls. - These must include the FIXED_REGISTERS and also any - registers that can be used without being saved. - The latter must include the registers where values are returned - and the register where structure-value addresses are passed. - Aside from that, you can include as many other registers as you like. */ -#define CALL_USED_REGISTERS \ - {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \ - 1, 0, 0, 0, 0, 0, \ - 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, \ - 1, 1, 1, 1, 1, 1, \ - 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0} - -/* Return number of consecutive hard regs needed starting at reg REGNO - to hold something of mode MODE. - This is ordinarily the length in words of a value of mode MODE - but can be less for certain modes in special long registers. - - On SPUR, ordinary registers hold 32 bits worth; - a single floating point register is always enough for - anything that can be stored in them at all. */ -#define HARD_REGNO_NREGS(REGNO, MODE) \ - ((REGNO) >= 32 ? GET_MODE_NUNITS ((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. - On SPUR, the cpu registers can hold any mode but the float registers - can hold only floating point. And they can't hold anything if use - of hardware floating point is disabled. */ -#define HARD_REGNO_MODE_OK(REGNO, MODE) \ - (((REGNO) < 32 \ - && (REGNO) + ((GET_MODE_UNIT_SIZE ((MODE)) + 3) / 4) <= 32) \ - || (TARGET_FPU && ((MODE) == SFmode || (MODE) == DFmode \ - || (MODE) == SCmode || (MODE) == DCmode))) - -/* Value is 1 if it is a good idea to tie two pseudo registers - when one has mode MODE1 and one has mode MODE2. - If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2, - for any hard reg, then this must be 0 for correct output. */ -#define MODES_TIEABLE_P(MODE1, MODE2) \ - (((MODE1) == SFmode || (MODE1) == DFmode \ - || (MODE1) == SCmode || (MODE1) == DCmode) \ - == ((MODE2) == SFmode || (MODE2) == DFmode \ - || (MODE2) == SCmode || (MODE2) == DCmode)) - -/* Specify the registers used for certain standard purposes. - The values of these macros are register numbers. */ - -/* SPUR pc isn't overloaded on a register that the compiler knows about. */ -/* #define PC_REGNUM */ - -/* Register to use for pushing function arguments. */ -#define STACK_POINTER_REGNUM 4 - -/* Base register for access to local variables of the function. */ -#define FRAME_POINTER_REGNUM 25 - -/* 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 1 - -/* Base register for access to arguments of the function. */ -#define ARG_POINTER_REGNUM 25 - -/* Register in which static-chain is passed to a function. */ -/* ??? */ -#define STATIC_CHAIN_REGNUM 8 - -/* Register in which address to store a structure value - is passed to a function. */ -#define STRUCT_VALUE_REGNUM 27 -#define STRUCT_VALUE_INCOMING_REGNUM 11 - -/* Define the classes of registers for register constraints in the - machine description. Also define ranges of constants. - - One of the classes must always be named ALL_REGS and include all hard regs. - If there is more than one class, another class must be named NO_REGS - and contain no registers. - - The name GENERAL_REGS must be the name of a class (or an alias for - another name such as ALL_REGS). This is the class of registers - that is allowed by "g" or "r" in a register constraint. - Also, registers outside this class are allocated only when - instructions express preferences for them. - - The classes must be numbered in nondecreasing order; that is, - a larger-numbered class must never be contained completely - in a smaller-numbered class. - - For any two classes, it is very desirable that there be another - class that represents their union. */ - -/* The 68000 has two kinds of registers, hence four classes. */ - -enum reg_class { NO_REGS, GENERAL_REGS, FP_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", "FP_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, 0}, {-1, 0}, {0, 0x7fff}, {-1, 0x7fff}} - -/* 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) >= 32 ? FP_REGS : GENERAL_REGS) - -/* The class value for index registers, and the one for base regs. */ -#define INDEX_REG_CLASS GENERAL_REGS -#define BASE_REG_CLASS GENERAL_REGS - -/* Get reg_class from a letter such as appears in the machine description. */ - -#define REG_CLASS_FROM_LETTER(C) \ - ((C) == 'f' ? FP_REGS : NO_REGS) - -/* The letters I, J, K, L and M in a register constraint string - can be used to stand for particular ranges of immediate operands. - This macro defines what the ranges are. - C is the letter, and VALUE is a constant value. - Return 1 if VALUE is in the range specified by C. - - For SPUR, `I' is used for the range of constants an insn - can actually contain. - `J' is used for the range which is just zero (since that is R0). - `K' is used for the 5-bit operand of a compare insns. */ - -#define CONST_OK_FOR_LETTER_P(VALUE, C) \ - ((C) == 'I' ? (unsigned) ((VALUE) + 0x2000) < 0x4000 \ - : (C) == 'J' ? (VALUE) == 0 \ - : (C) == 'K' ? (unsigned) (VALUE) < 0x20 \ - : 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) \ - ((C) == 'G' && CONST_DOUBLE_HIGH (VALUE) == 0 \ - && CONST_DOUBLE_LOW (VALUE) == 0) - -/* 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 SPUR, this is the size of MODE in words, - except in the FP regs, where a single reg is always enough. */ -#define CLASS_MAX_NREGS(CLASS, MODE) \ - ((CLASS) == FP_REGS ? 1 \ - : ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)) - -/* Stack layout; function entry, exit and calling. */ - -/* Define this if pushing a word on the stack - makes the stack pointer a smaller address. */ -#define STACK_GROWS_DOWNWARD - -/* Define this if 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 - -/* If we generate an insn to push BYTES bytes, - this says how many the stack pointer really advances by. - On SPUR, don't define this because there are no push insns. */ -/* #define PUSH_ROUNDING(BYTES) */ - -/* Offset of first parameter from the argument pointer register value. */ -#define FIRST_PARM_OFFSET(FNDECL) 0 - -/* Value is the number of bytes of arguments automatically - popped when returning from a subroutine call. - FUNDECL is the declaration node of the function (as a tree), - FUNTYPE is the data type of the function (as a tree), - or for a library call it is an identifier node for the subroutine name. - SIZE is the number of bytes of arguments passed on the stack. */ - -#define RETURN_POPS_ARGS(FUNDECL,FUNTYPE,SIZE) 0 - -/* Define how to find the value returned by a function. - VALTYPE is the data type of the value (as a tree). - If the precise function being called is known, FUNC is its FUNCTION_DECL; - otherwise, FUNC is 0. */ - -/* On SPUR the value is found in the second "output" register. */ - -#define FUNCTION_VALUE(VALTYPE, FUNC) \ - gen_rtx_REG (TYPE_MODE (VALTYPE), 27) - -/* But the called function leaves it in the second "input" register. */ - -#define FUNCTION_OUTGOING_VALUE(VALTYPE, FUNC) \ - gen_rtx_REG (TYPE_MODE (VALTYPE), 11) - -/* Define how to find the value returned by a library function - assuming the value has mode MODE. */ - -#define LIBCALL_VALUE(MODE) gen_rtx_REG (MODE, 27) - -/* 1 if N is a possible register number for a function value - as seen by the caller. - On SPUR, the first "output" reg is the only register thus used. */ - -#define FUNCTION_VALUE_REGNO_P(N) ((N) == 27) - -/* 1 if N is a possible register number for function argument passing. - On SPUR, these are the "output" registers. */ - -#define FUNCTION_ARG_REGNO_P(N) ((N) < 32 && (N) > 26) - -/* Define this macro if the target machine has "register windows". This - C expression returns the register number as seen by the called function - corresponding to register number OUT as seen by the calling function. - Return OUT if register number OUT is not an outbound register. */ - -#define INCOMING_REGNO(OUT) \ - (((OUT) < 27 || (OUT) > 31) ? (OUT) : (OUT) - 16) - -/* Define this macro if the target machine has "register windows". This - C expression returns the register number as seen by the calling function - corresponding to register number IN as seen by the called function. - Return IN if register number IN is not an inbound register. */ - -#define OUTGOING_REGNO(IN) \ - (((IN) < 11 || (IN) > 15) ? (IN) : (IN) + 16) - -/* 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 SPUR, this is a single integer, which is a number of words - of arguments scanned so far (including the invisible argument, - if any, which holds the structure-value-address). - Thus 5 or more means all following args should go on the stack. */ - -#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 SPUR, the offset normally starts at 0, but starts at 4 bytes - when the function gets a structure-value-address as an - invisible first argument. */ - -#define INIT_CUMULATIVE_ARGS(CUM,FNTYPE,LIBNAME,INDIRECT) \ - ((CUM) = ((FNTYPE) != 0 && aggregate_value_p (TREE_TYPE ((FNTYPE))))) - -/* 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) / 4 \ - : (int_size_in_bytes (TYPE) + 3) / 4)) - -/* Determine where to put an argument 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 SPUR the first five words of args are normally in registers - and the rest are pushed. But any arg that won't entirely fit in regs - is pushed. */ - -#define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \ -(5 >= ((CUM) \ - + ((MODE) == BLKmode \ - ? (int_size_in_bytes (TYPE) + 3) / 4 \ - : (GET_MODE_SIZE (MODE) + 3) / 4)) \ - ? gen_rtx_REG ((MODE), 27 + (CUM)) \ - : 0) - -/* Define where a function finds its arguments. - This is different from FUNCTION_ARG because of register windows. */ - -#define FUNCTION_INCOMING_ARG(CUM, MODE, TYPE, NAMED) \ -(5 >= ((CUM) \ - + ((MODE) == BLKmode \ - ? (int_size_in_bytes (TYPE) + 3) / 4 \ - : (GET_MODE_SIZE (MODE) + 3) / 4)) \ - ? gen_rtx_REG ((MODE), 11 + (CUM)) \ - : 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) 0 - -/* This macro generates the assembly code for function entry. - FILE is a stdio stream to output the code to. - SIZE is an int: how many units of temporary storage to allocate. - Refer to the array `regs_ever_live' to determine which registers - to save; `regs_ever_live[I]' is nonzero if register number I - is ever used in the function. This macro is responsible for - knowing which registers should not be saved even if used. */ - -/* On spur, move-double insns between fpu and cpu need an 8-byte block - of memory. If any fpu reg is used in the function, we allocate - such a block here, at the bottom of the frame, just in case it's needed. */ - -#define FUNCTION_PROLOGUE(FILE, SIZE) \ -{ \ - extern char call_used_regs[]; \ - int fsize = ((SIZE) + 7) & ~7; \ - int nregs, i, fp_used = 0; \ - for (i = 32, nregs = 0; i < FIRST_PSEUDO_REGISTER; i++) \ - { \ - if (regs_ever_live[i] && ! call_used_regs[i]) \ - nregs++; \ - if (regs_ever_live[i]) fp_used = 1; \ - } \ - if (fp_used) fsize += 8; \ - fprintf (FILE, "0:\trd_special r24,pc\n"); \ - fprintf (FILE, "\tand r24,r24,$~0x3\n"); \ - fprintf (FILE, "\tadd_nt r25,r4,$%d\n", \ - - current_function_pretend_args_size); \ - if (fsize + nregs != 0 || current_function_pretend_args_size > 0)\ - { \ - int n = - fsize - nregs * 16; \ - if (n >= -8192) \ - fprintf (FILE, "\tadd_nt r4,r25,$%d\n", n); \ - else \ - { \ - fprintf (FILE, "\tadd_nt r4,r25,$-8192\n"); \ - n += 8192; \ - while (n < -8192) \ - fprintf (FILE, "\tadd_nt r4,r4,$-8192\n"), n += 8192; \ - if (n != 0) \ - fprintf (FILE, "\tadd_nt r4,r4,$%d\n", n); \ - } \ - } \ - for (i = 32, nregs = 0; i < FIRST_PSEUDO_REGISTER; i++) \ - if (regs_ever_live[i] && ! call_used_regs[i]) \ - { \ - fprintf (FILE, "\tst_ext1 %s,r4,$%d\n", \ - reg_names[i], 8 * nregs++); \ - fprintf (FILE, "\tst_ext2 %s,r4,$%d\n", \ - reg_names[i], 8 * nregs++); \ - } \ -} - -/* Output assembler code to FILE to increment profiler label # LABELNO - for profiling a function entry. */ - -#define FUNCTION_PROFILER(FILE, LABELNO) \ - abort (); - -/* 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 \ - (get_frame_size () != 0 \ - || current_function_calls_alloca || current_function_pretend_args_size) - -/* This macro generates the assembly code for function exit, - on machines that need it. If FUNCTION_EPILOGUE is not defined - then individual return instructions are generated for each - return statement. Args are same as for FUNCTION_PROLOGUE. - - The function epilogue should not depend on the current stack pointer! - It should use the frame pointer only. This is mandatory because - of alloca; we also take advantage of it to omit stack adjustments - before returning. */ - -#define FUNCTION_EPILOGUE(FILE, SIZE) \ -{ \ - extern char call_used_regs[]; \ - int fsize = ((SIZE) + 7) & ~7; \ - int nregs, i, fp_used = 0; \ - for (i = 32, nregs = 0; i < FIRST_PSEUDO_REGISTER; i++) \ - { \ - if (regs_ever_live[i] && ! call_used_regs[i]) \ - nregs++; \ - if (regs_ever_live[i]) fp_used = 1; \ - } \ - if (fp_used) fsize += 8; \ - if (nregs != 0) \ - { \ - fprintf (FILE, "\tadd_nt r4,r25,$%d\n", - fsize - nregs * 16); \ - for (i = 32, nregs = 0; i < FIRST_PSEUDO_REGISTER; i++) \ - if (regs_ever_live[i] && ! call_used_regs[i]) \ - { \ - fprintf (FILE, "\tld_ext1 %s,r4,$%d\n\tnop\n", \ - reg_names[i], 8 * nregs++); \ - fprintf (FILE, "\tld_ext2 %s,r4,$%d\n\tnop\n", \ - reg_names[i], 8 * nregs++); \ - } \ - } \ - if (fsize != 0 || nregs != 0 || current_function_calls_alloca \ - || current_function_pretend_args_size > 0) \ - fprintf (FILE, "\tadd_nt r4,r25,$%d\n", \ - current_function_pretend_args_size); \ - fprintf (FILE, "\treturn r10,$8\n\tnop\n"); \ -} - -/* 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. */ - -#define REGNO_OK_FOR_INDEX_P(REGNO) \ -((REGNO) < 32 || (unsigned) reg_renumber[REGNO] < 32) -#define REGNO_OK_FOR_BASE_P(REGNO) \ -((REGNO) < 32 || (unsigned) reg_renumber[REGNO] < 32) -#define REGNO_OK_FOR_FP_P(REGNO) \ -(((REGNO) ^ 0x20) < 14 || (unsigned) (reg_renumber[REGNO] ^ 0x20) < 14) - -/* Now macros that check whether X is a register and also, - strictly, whether it is in a specified class. - - These macros are specific to the SPUR, and may be used only - in code for printing assembler insns and in conditions for - define_optimization. */ - -/* 1 if X is an fp register. */ - -#define FP_REG_P(X) (REG_P (X) && REGNO_OK_FOR_FP_P (REGNO (X))) - -/* 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. */ - -#define CONSTANT_ADDRESS_P(X) \ - (GET_CODE (X) == LABEL_REF || GET_CODE (X) == SYMBOL_REF \ - || GET_CODE (X) == CONST_INT || GET_CODE (X) == CONST \ - || GET_CODE (X) == HIGH) - -/* Nonzero if the constant value X is a legitimate general operand. - It is given that X satisfies CONSTANT_P or is a CONST_DOUBLE. */ - -#define LEGITIMATE_CONSTANT_P(X) \ - ((GET_CODE (X) == CONST_INT \ - && (unsigned) (INTVAL (X) + 0x2000) < 0x4000)\ - || (GET_CODE (X) == SYMBOL_REF && (X)->unchanging)) - -/* 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) (((unsigned) REGNO (X)) - 32 >= 14) -/* 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) (((unsigned) REGNO (X)) - 32 >= 14) - -#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 - -/* 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. - - On SPUR, the actual legitimate addresses must be REG+SMALLINT or REG+REG. - Actually, REG+REG is not legitimate for stores, so - it is obtained only by combination on loads. - We can treat a SYMBOL_REF as legitimate if it is part of this - function's constant-pool, because such addresses can actually - be output as REG+SMALLINT. */ - -#define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR) \ -{ if (GET_CODE (X) == REG \ - && REG_OK_FOR_BASE_P (X)) \ - goto ADDR; \ - if (GET_CODE (X) == SYMBOL_REF && (X)->unchanging) \ - goto ADDR; \ - if (GET_CODE (X) == PLUS \ - && GET_CODE (XEXP (X, 0)) == REG \ - && REG_OK_FOR_BASE_P (XEXP (X, 0))) \ - { \ - if (GET_CODE (XEXP (X, 1)) == CONST_INT \ - && INTVAL (XEXP (X, 1)) >= -0x2000 \ - && INTVAL (XEXP (X, 1)) < 0x2000) \ - goto ADDR; \ - } \ -} - -/* Try machine-dependent ways of modifying an illegitimate address - to be legitimate. If we find one, return the new, valid address. - This macro is used in only one place: `memory_address' in explow.c. - - OLDX is the address as it was before break_out_memory_refs was called. - In some cases it is useful to look at this to decide what needs to be done. - - MODE and WIN are passed so that this macro can use - GO_IF_LEGITIMATE_ADDRESS. - - It is always safe for this macro to do nothing. It exists to recognize - opportunities to optimize the output. */ - -/* On SPUR, change REG+N into REG+REG, and REG+(X*Y) into REG+REG. */ - -#define LEGITIMIZE_ADDRESS(X,OLDX,MODE,WIN) \ -{ if (GET_CODE (X) == PLUS && CONSTANT_ADDRESS_P (XEXP (X, 1))) \ - (X) = gen_rtx_PLUS (SImode, XEXP (X, 0), \ - copy_to_mode_reg (SImode, XEXP (X, 1))); \ - if (GET_CODE (X) == PLUS && CONSTANT_ADDRESS_P (XEXP (X, 0))) \ - (X) = gen_rtx_PLUS (SImode, XEXP (X, 1), \ - copy_to_mode_reg (SImode, XEXP (X, 0))); \ - if (GET_CODE (X) == PLUS && GET_CODE (XEXP (X, 0)) == MULT) \ - (X) = gen_rtx_PLUS (SImode, XEXP (X, 1), \ - force_operand (XEXP (X, 0), 0)); \ - if (GET_CODE (X) == PLUS && GET_CODE (XEXP (X, 1)) == MULT) \ - (X) = gen_rtx_PLUS (SImode, XEXP (X, 0), \ - force_operand (XEXP (X, 1), 0)); \ - if (memory_address_p (MODE, X)) \ - goto 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 SPUR this is never true. */ - -#define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL) - -/* Specify the machine mode that this machine uses - for the index in the tablejump instruction. */ -#define CASE_VECTOR_MODE SImode - -/* Define as C expression which evaluates to nonzero if the tablejump - instruction expects the table to contain offsets from the address of the - table. - Do not define this if the table should contain absolute addresses. */ -/* #define CASE_VECTOR_PC_RELATIVE 1 */ - -/* Specify the tree operation to be used to convert reals to integers. */ -#define IMPLICIT_FIX_EXPR FIX_ROUND_EXPR - -/* This is the kind of divide that is easiest to do in the general case. */ -#define EASY_DIV_EXPR TRUNC_DIV_EXPR - -/* Define this as 1 if `char' should by default be signed; else as 0. */ -#define DEFAULT_SIGNED_CHAR 0 - -/* Max number of bytes we can move from memory to memory - in one reasonably fast instruction. */ -#define MOVE_MAX 4 - -/* Nonzero if access to memory by bytes is slow and undesirable. */ -#define SLOW_BYTE_ACCESS 1 - -/* This is BSD, so it wants DBX format. */ -#define DBX_DEBUGGING_INFO - -/* Do not break .stabs pseudos into continuations. */ -#define DBX_CONTIN_LENGTH 0 - -/* Don't try to use the `x' type-cross-reference character in DBX data. - Also has the consequence of putting each struct, union or enum - into a separate .stabs, containing only cross-refs to the others. */ -#define DBX_NO_XREFS - -/* Value is 1 if truncating an integer of INPREC bits to OUTPREC bits - is done just by pretending it is already truncated. */ -#define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1 - -/* Specify the machine mode that pointers have. - After generation of rtl, the compiler makes no further distinction - between pointers and any other objects of this machine mode. */ -#define Pmode SImode - -/* A function address in a call instruction - is a byte address (for indexing purposes) - so give the MEM rtx a byte's mode. */ -#define FUNCTION_MODE SImode - -/* Define this if addresses of constant functions - shouldn't be put through pseudo regs where they can be cse'd. - Desirable on machines where ordinary constants are expensive - but a CALL with constant address is cheap. */ -#define NO_FUNCTION_CSE - -/* 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) < 0x2000 && INTVAL (RTX) >= -0x2000) return 1; \ - case CONST: \ - case LABEL_REF: \ - case SYMBOL_REF: \ - return 2; \ - case CONST_DOUBLE: \ - return 4; - -/* Tell final.c how to eliminate redundant test instructions. */ - -/* Here we define machine-dependent flags and fields in cc_status - (see `conditions.h'). */ - -/* (None are needed on SPUR.) */ - -/* 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. */ - -/* The SPUR does not really have a condition code. */ - -#define NOTICE_UPDATE_CC(EXP, INSN) \ -{ CC_STATUS_INIT; } - -/* Control the assembler format that we output. */ - -/* Output at beginning of assembler file. */ - -#define ASM_FILE_START(FILE) - -/* Output to assembler file text saying following lines - may contain character constants, extra white space, comments, etc. */ - -#define ASM_APP_ON "" - -/* Output to assembler file text saying following lines - no longer contain unusual constructs. */ - -#define ASM_APP_OFF "" - -/* Output before read-only data. */ - -#define TEXT_SECTION_ASM_OP "\t.text" - -/* Output before writable data. */ - -#define DATA_SECTION_ASM_OP "\t.data" - -/* How to refer to registers in assembler output. - This sequence is indexed by compiler's hard-register-number (see above). */ - -#define REGISTER_NAMES \ -{"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9", \ - "r10", "r11", "r12", "r13", "r14", "r15", "r16", "r17", "r18", "r19", \ - "r20", "r21", "r22", "r23", "r24", "r25", "r26", "r27", "r28", "r29", \ - "r30", "r31", \ - "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", "f8", "f9", \ - "f10", "f11", "f12", "f13", "f14" } - -/* How to renumber registers for dbx and gdb. */ - -#define DBX_REGISTER_NUMBER(REGNO) (REGNO) - -/* This is how to output the definition of a user-level label named NAME, - such as the label on a static function or variable NAME. */ - -#define ASM_OUTPUT_LABEL(FILE,NAME) \ - do { assemble_name (FILE, NAME); fputs (":\n", FILE); } while (0) - -/* This is how to output a command to make the user-level label named NAME - defined for reference from other files. */ - -#define ASM_GLOBALIZE_LABEL(FILE,NAME) \ - do { fputs (".globl ", FILE); assemble_name (FILE, NAME); fputs ("\n", FILE);} while (0) - -/* 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) \ - 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%d", PREFIX, NUM) - -/* This is how to output an assembler line defining a `double' constant. */ - -#define ASM_OUTPUT_DOUBLE(FILE,VALUE) \ - fprintf (FILE, "\t.double %.20e\n", (VALUE)) - -/* This is how to output an assembler line defining a `float' constant. */ - -#define ASM_OUTPUT_FLOAT(FILE,VALUE) \ - fprintf (FILE, "\t.single %.12e\n", (VALUE)) - -/* This is how to output an assembler line defining an `int' constant. */ - -#define ASM_OUTPUT_INT(FILE,VALUE) \ -( fprintf (FILE, "\t.long "), \ - output_addr_const (FILE, (VALUE)), \ - fprintf (FILE, "\n")) - -/* Likewise for `char' and `short' constants. */ - -#define ASM_OUTPUT_SHORT(FILE,VALUE) \ -( fprintf (FILE, "\t.word "), \ - output_addr_const (FILE, (VALUE)), \ - fprintf (FILE, "\n")) - -#define ASM_OUTPUT_CHAR(FILE,VALUE) \ -( fprintf (FILE, "\t.byte "), \ - output_addr_const (FILE, (VALUE)), \ - fprintf (FILE, "\n")) - -/* This is how to output an assembler line for a numeric constant byte. */ - -#define ASM_OUTPUT_BYTE(FILE,VALUE) \ - fprintf (FILE, "\t.byte 0x%x\n", (VALUE)) - -/* This is how to output code to push a register on the stack. - It need not be very fast code. */ - -#define ASM_OUTPUT_REG_PUSH(FILE,REGNO) \ - fprintf (FILE, "\tadd_nt r4,r4,$-4\n\tst_32 %s,r4,$0\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, "\tld_32 %s,r4,$0\n\tadd_nt r4,r4,$4\n", reg_names[REGNO]) - -/* This is how to output an element of a case-vector that is absolute. */ - -#define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \ - fprintf (FILE, "\t.long L%d\n", VALUE) - -/* This is how to output an element of a case-vector that is relative. - (SPUR does not use such vectors, - but we must define this macro anyway.) */ - -#define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \ - fprintf (FILE, "\t.word L%d-L%d\n", VALUE, REL) - -/* This is how to output an assembler line - that says to advance the location counter - to a multiple of 2**LOG bytes. */ - -#define ASM_OUTPUT_ALIGN(FILE,LOG) \ - if ((LOG) != 0) \ - 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))) - -/* Define the parentheses used to group arithmetic operations - in assembler code. */ - -#define ASM_OPEN_PAREN "(" -#define ASM_CLOSE_PAREN ")" - -/* Define results of standard character escape sequences. */ -#define TARGET_BELL 007 -#define TARGET_BS 010 -#define TARGET_TAB 011 -#define TARGET_NEWLINE 012 -#define TARGET_VT 013 -#define TARGET_FF 014 -#define TARGET_CR 015 - -/* Print 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. - - On SPUR, the CODE can be `r', meaning this is a register-only operand - and an immediate zero should be represented as `r0'. */ - -#define PRINT_OPERAND(FILE, X, CODE) \ -{ if (GET_CODE (X) == REG) \ - fprintf (FILE, "%s", reg_names[REGNO (X)]); \ - else if (GET_CODE (X) == MEM) \ - output_address (XEXP (X, 0)); \ - else if (GET_CODE (X) == CONST_DOUBLE) \ - abort (); \ - else if ((CODE) == 'r' && (X) == const0_rtx) \ - fprintf (FILE, "r0"); \ - else { putc ('$', FILE); output_addr_const (FILE, X); }} - -/* Print a memory address as an operand to reference that memory location. */ - -#define PRINT_OPERAND_ADDRESS(FILE, ADDR) \ -{ register rtx base, index = 0; \ - int offset = 0; \ - register rtx addr = ADDR; \ - if (GET_CODE (addr) == REG) \ - { \ - fprintf (FILE, "%s,$0", reg_names[REGNO (addr)]); \ - } \ - else if (GET_CODE (addr) == PLUS) \ - { \ - if (GET_CODE (XEXP (addr, 0)) == CONST_INT) \ - offset = INTVAL (XEXP (addr, 0)), base = XEXP (addr, 1);\ - else if (GET_CODE (XEXP (addr, 1)) == CONST_INT) \ - offset = INTVAL (XEXP (addr, 1)), base = XEXP (addr, 0);\ - else \ - base = XEXP (addr, 0), index = XEXP (addr, 1); \ - fprintf (FILE, "%s,", reg_names[REGNO (base)]); \ - if (index == 0) \ - fprintf (FILE, "$%d", offset); \ - else \ - fprintf (FILE, "%s,", reg_names[REGNO (index)]); \ - } \ - else \ - { \ - fprintf (FILE, "r24,$("); \ - output_addr_const (FILE, addr); \ - fprintf (FILE, "-0b)"); \ - } \ -} |