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Diffstat (limited to 'gcc/config/arc/arc.h')
| -rwxr-xr-x | gcc/config/arc/arc.h | 1642 |
1 files changed, 0 insertions, 1642 deletions
diff --git a/gcc/config/arc/arc.h b/gcc/config/arc/arc.h deleted file mode 100755 index 49d9fe2..0000000 --- a/gcc/config/arc/arc.h +++ /dev/null @@ -1,1642 +0,0 @@ -/* Definitions of target machine for GNU compiler, Argonaut ARC cpu. - Copyright (C) 1994, 1995, 1997, 1998 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. */ - -/* ??? This is an old port, and is undoubtedly suffering from bit rot. */ - -/* Things to do: - - - PREDICATE_CODES - - incscc, decscc? - - print active compiler options in assembler output -*/ - -/* ??? Create elf.h and have svr4.h include it. */ -#include "svr4.h" - -#undef ASM_SPEC -#undef LINK_SPEC -#undef STARTFILE_SPEC -#undef ENDFILE_SPEC -#undef SIZE_TYPE -#undef PTRDIFF_TYPE -#undef WCHAR_TYPE -#undef WCHAR_TYPE_SIZE - -/* Print subsidiary information on the compiler version in use. */ -#define TARGET_VERSION fprintf (stderr, " (arc)") - -/* Names to predefine in the preprocessor for this target machine. */ -#define CPP_PREDEFINES "-Acpu(arc) -Amachine(arc) -D__arc__" - -/* Additional flags for the preprocessor. */ -#define CPP_SPEC "\ -%{!mcpu=*:-D__base__} %{mcpu=base:-D__base__} \ -%{EB:-D__big_endian__} \ -" - -/* Pass -mmangle-cpu if we get -mcpu=*. - Doing it this way lets one have it on as default with -mcpu=*, - but also lets one turn it off with -mno-mangle-cpu. */ -#define CC1_SPEC "\ -%{mcpu=*:-mmangle-cpu} \ -%{EB:%{EL:%emay not use both -EB and -EL}} \ -%{EB:-mbig-endian} %{EL:-mlittle-endian} \ -" - -#define ASM_SPEC "%{v} %{EB} %{EL}" - -#define LINK_SPEC "%{v} %{EB} %{EL}" - -#define STARTFILE_SPEC "%{!shared:crt0.o%s} crtinit.o%s" - -#define ENDFILE_SPEC "crtfini.o%s" - -/* Run-time compilation parameters selecting different hardware subsets. */ - -extern int target_flags; - -/* Mangle all user symbols for the specified cpu. - ARC's can be shipped in which a collection of cpus are coupled together. - Each CPU may be different in some way, and thus we may need to distinguish - code compiled for one to ensure it isn't linked with code compiled for - another. */ -#define TARGET_MASK_MANGLE_CPU 1 -#define TARGET_MANGLE_CPU (target_flags & TARGET_MASK_MANGLE_CPU) - -#if 0 -/* Mangle libgcc symbols by adding a suffix for the specified cpu. */ -#define TARGET_MASK_MANGLE_CPU_LIBGCC 2 -#define TARGET_MANGLE_CPU_LIBGCC (target_flags & TARGET_MASK_MANGLE_CPU_LIBGCC) -#endif - -/* Align loops to 32 byte boundaries (cache line size). */ -#define TARGET_MASK_ALIGN_LOOPS 4 -#define TARGET_ALIGN_LOOPS (target_flags & TARGET_MASK_ALIGN_LOOPS) - -/* Big Endian. */ -#define TARGET_MASK_BIG_ENDIAN 8 -#define TARGET_BIG_ENDIAN (target_flags & TARGET_MASK_BIG_ENDIAN) - -/* Turn off conditional execution optimization, - so we can see how well it does, or in case it's buggy. */ -#define TARGET_MASK_NO_COND_EXEC 0x10 -#define TARGET_NO_COND_EXEC (target_flags & TARGET_MASK_NO_COND_EXEC) - -/* 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 \ -{ \ - { "mangle-cpu", TARGET_MASK_MANGLE_CPU }, \ - { "no-mangle-cpu", -TARGET_MASK_MANGLE_CPU }, \ -/* { "mangle-cpu-libgcc", TARGET_MASK_MANGLE_CPU_LIBGCC }, */ \ -/* { "no-mangle-cpu-libgcc", -TARGET_MASK_MANGLE_CPU_LIBGCC }, */ \ - { "align-loops", TARGET_MASK_ALIGN_LOOPS }, \ - { "no-align-loops", -TARGET_MASK_ALIGN_LOOPS }, \ - { "big-endian", TARGET_MASK_BIG_ENDIAN }, \ - { "little-endian", -TARGET_MASK_BIG_ENDIAN }, \ - { "no-cond-exec", TARGET_MASK_NO_COND_EXEC }, \ - SUBTARGET_SWITCHES \ - { "", TARGET_DEFAULT } \ -} - -#define TARGET_DEFAULT (0) - -#define SUBTARGET_SWITCHES - -/* Instruction set characteristics. - These are internal macros, set by the appropriate -mcpu= option. */ - -/* Non-zero means the cpu has a barrel shifter. */ -#define TARGET_SHIFTER 0 - -/* This macro is similar to `TARGET_SWITCHES' but defines names of - command options that have values. Its definition is an - initializer with a subgrouping for each command option. - - Each subgrouping contains a string constant, that defines the - fixed part of the option name, and the address of a variable. - The variable, type `char *', is set to the variable part of the - given option if the fixed part matches. The actual option name - is made by appending `-m' to the specified name. - - Here is an example which defines `-mshort-data-NUMBER'. If the - given option is `-mshort-data-512', the variable `m88k_short_data' - will be set to the string `"512"'. - - extern char *m88k_short_data; - #define TARGET_OPTIONS { { "short-data-", &m88k_short_data } } */ - -extern char *arc_cpu_string; -extern char *arc_text_string,*arc_data_string,*arc_rodata_string; - -#define TARGET_OPTIONS \ -{ \ - { "cpu=", &arc_cpu_string }, \ - { "text=", &arc_text_string }, \ - { "data=", &arc_data_string }, \ - { "rodata=", &arc_rodata_string }, \ -} - -/* Which cpu we're compiling for. */ -extern int arc_cpu_type; - -/* Check if CPU is an extension and set `arc_cpu_type' and `arc_mangle_cpu' - appropriately. The result should be non-zero if the cpu is recognized, - otherwise zero. This is intended to be redefined in a cover file. - This is used by arc_init. */ -#define ARC_EXTENSION_CPU(cpu) 0 - -/* Sometimes certain combinations of command options do not make - sense on a particular target machine. You can define a macro - `OVERRIDE_OPTIONS' to take account of this. This macro, if - defined, is executed once just after all the command options have - been parsed. - - Don't use this macro to turn on various extra optimizations for - `-O'. That is what `OPTIMIZATION_OPTIONS' is for. */ - -extern void arc_init (); - -#define OVERRIDE_OPTIONS \ -do { \ - /* These need to be done at start up. It's convenient to do them here. */ \ - arc_init (); \ -} while (0) - -/* Target machine storage layout. */ - -/* Define to use software floating point emulator for REAL_ARITHMETIC and - decimal <-> binary conversion. */ -#define REAL_ARITHMETIC - -/* Define this if most significant bit is lowest numbered - in instructions that operate on numbered bit-fields. */ -#define BITS_BIG_ENDIAN 1 - -/* Define this if most significant byte of a word is the lowest numbered. */ -#define BYTES_BIG_ENDIAN (TARGET_BIG_ENDIAN) - -/* Define this if most significant word of a multiword number is the lowest - numbered. */ -#define WORDS_BIG_ENDIAN (TARGET_BIG_ENDIAN) - -/* Define this to set the endianness to use in libgcc2.c, which can - not depend on target_flags. */ -#ifdef __big_endian__ -#define LIBGCC2_WORDS_BIG_ENDIAN 1 -#else -#define LIBGCC2_WORDS_BIG_ENDIAN 0 -#endif - -/* 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 - -/* Define this macro if it is advisable to hold scalars in registers - in a wider mode than that declared by the program. In such cases, - the value is constrained to be within the bounds of the declared - type, but kept valid in the wider mode. The signedness of the - extension may differ from that of the type. */ -#define PROMOTE_MODE(MODE,UNSIGNEDP,TYPE) \ -if (GET_MODE_CLASS (MODE) == MODE_INT \ - && GET_MODE_SIZE (MODE) < UNITS_PER_WORD) \ -{ \ - (MODE) = SImode; \ -} - -/* Define this macro if the promotion described by `PROMOTE_MODE' - should also be done for outgoing function arguments. */ -#define PROMOTE_FUNCTION_ARGS - -/* Likewise, if the function return value is promoted. */ -#define PROMOTE_FUNCTION_RETURN - -/* Width in bits of a pointer. - See also the macro `Pmode' defined below. */ -#define POINTER_SIZE 32 - -/* Allocation boundary (in *bits*) for storing arguments in argument list. */ -#define PARM_BOUNDARY 32 - -/* Boundary (in *bits*) on which stack pointer should be aligned. */ -#define STACK_BOUNDARY 64 - -/* ALIGN FRAMES on word boundaries */ -#define ARC_STACK_ALIGN(LOC) (((LOC)+7) & ~7) - -/* 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 8 - -/* A bitfield declared as `int' forces `int' alignment for the struct. */ -#define PCC_BITFIELD_TYPE_MATTERS 1 - -/* No data type wants to be aligned rounder than this. */ -/* This is bigger than currently necessary for the ARC. If 8 byte floats are - ever added it's not clear whether they'll need such alignment or not. For - now we assume they will. We can always relax it if necessary but the - reverse isn't true. */ -#define BIGGEST_ALIGNMENT 64 - -/* The best alignment to use in cases where we have a choice. */ -#define FASTEST_ALIGNMENT 32 - -/* Make strings word-aligned so strcpy from constants will be faster. */ -#define CONSTANT_ALIGNMENT(EXP, ALIGN) \ - ((TREE_CODE (EXP) == STRING_CST \ - && (ALIGN) < FASTEST_ALIGNMENT) \ - ? FASTEST_ALIGNMENT : (ALIGN)) - -/* Make arrays of chars word-aligned for the same reasons. */ -#define DATA_ALIGNMENT(TYPE, ALIGN) \ - (TREE_CODE (TYPE) == ARRAY_TYPE \ - && TYPE_MODE (TREE_TYPE (TYPE)) == QImode \ - && (ALIGN) < FASTEST_ALIGNMENT ? FASTEST_ALIGNMENT : (ALIGN)) - -/* Set this nonzero if move instructions will actually fail to work - when given unaligned data. */ -/* On the ARC the lower address bits are masked to 0 as necessary. The chip - won't croak when given an unaligned address, but the insn will still fail - to produce the correct result. */ -#define STRICT_ALIGNMENT 1 - -/* Layout of source language data types. */ - -#define SHORT_TYPE_SIZE 16 -#define INT_TYPE_SIZE 32 -#define LONG_TYPE_SIZE 32 -#define LONG_LONG_TYPE_SIZE 64 -#define FLOAT_TYPE_SIZE 32 -#define DOUBLE_TYPE_SIZE 64 -#define LONG_DOUBLE_TYPE_SIZE 64 - -/* Define this as 1 if `char' should by default be signed; else as 0. */ -#define DEFAULT_SIGNED_CHAR 1 - -#define SIZE_TYPE "long unsigned int" -#define PTRDIFF_TYPE "long int" -#define WCHAR_TYPE "short unsigned int" -#define WCHAR_TYPE_SIZE 16 - -/* 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 - -/* 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. */ -/* Registers 61, 62, and 63 are not really registers and we needn't treat - them as such. We still need a register for the condition code. */ -#define FIRST_PSEUDO_REGISTER 62 - -/* 1 for registers that have pervasive standard uses - and are not available for the register allocator. - - 0-28 - general purpose registers - 29 - ilink1 (interrupt link register) - 30 - ilink2 (interrupt link register) - 31 - blink (branch link register) - 32-59 - reserved for extensions - 60 - LP_COUNT - 61 - condition code - - For doc purposes: - 61 - short immediate data indicator (setting flags) - 62 - long immediate data indicator - 63 - short immediate data indicator (not setting flags). - - The general purpose registers are further broken down into: - 0-7 - arguments/results - 8-15 - call used - 16-23 - call saved - 24 - call used, static chain pointer - 25 - call used, gptmp - 26 - global pointer - 27 - frame pointer - 28 - stack pointer - - By default, the extension registers are not available. */ - -#define FIXED_REGISTERS \ -{ 0, 0, 0, 0, 0, 0, 0, 0, \ - 0, 0, 0, 0, 0, 0, 0, 0, \ - 0, 0, 0, 0, 0, 0, 0, 0, \ - 0, 0, 0, 1, 1, 1, 1, 0, \ - \ - 1, 1, 1, 1, 1, 1, 1, 1, \ - 1, 1, 1, 1, 1, 1, 1, 1, \ - 1, 1, 1, 1, 1, 1, 1, 1, \ - 1, 1, 1, 1, 1, 1 } - -/* 1 for registers not available across function calls. - These must include the FIXED_REGISTERS and also any - registers that can be used without being saved. - The latter must include the registers where values are returned - and the register where structure-value addresses are passed. - Aside from that, you can include as many other registers as you like. */ - -#define CALL_USED_REGISTERS \ -{ 1, 1, 1, 1, 1, 1, 1, 1, \ - 1, 1, 1, 1, 1, 1, 1, 1, \ - 0, 0, 0, 0, 0, 0, 0, 0, \ - 1, 1, 1, 1, 1, 1, 1, 1, \ - \ - 1, 1, 1, 1, 1, 1, 1, 1, \ - 1, 1, 1, 1, 1, 1, 1, 1, \ - 1, 1, 1, 1, 1, 1, 1, 1, \ - 1, 1, 1, 1, 1, 1 } - -/* If defined, an initializer for a vector of integers, containing the - numbers of hard registers in the order in which GNU CC should - prefer to use them (from most preferred to least). */ -#define REG_ALLOC_ORDER \ -{ 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 0, 1, \ - 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 31, \ - 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, \ - 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, \ - 27, 28, 29, 30 } - -/* 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. */ -#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. */ -extern unsigned int arc_hard_regno_mode_ok[]; -extern unsigned int arc_mode_class[]; -#define HARD_REGNO_MODE_OK(REGNO, MODE) \ -((arc_hard_regno_mode_ok[REGNO] & arc_mode_class[MODE]) != 0) - -/* A C expression that is nonzero if it is desirable to choose - register allocation so as to avoid move instructions between a - value of mode MODE1 and a value of mode MODE2. - - If `HARD_REGNO_MODE_OK (R, MODE1)' and `HARD_REGNO_MODE_OK (R, - MODE2)' are ever different for any R, then `MODES_TIEABLE_P (MODE1, - MODE2)' must be zero. */ - -/* Tie QI/HI/SI modes together. */ -#define MODES_TIEABLE_P(MODE1, MODE2) \ -(GET_MODE_CLASS (MODE1) == MODE_INT \ - && GET_MODE_CLASS (MODE2) == MODE_INT \ - && GET_MODE_SIZE (MODE1) <= UNITS_PER_WORD \ - && GET_MODE_SIZE (MODE2) <= UNITS_PER_WORD) - -/* Register classes and constants. */ - -/* 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. - - It is important that any condition codes have class NO_REGS. - See `register_operand'. */ - -enum reg_class { - NO_REGS, LPCOUNT_REG, GENERAL_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", "LPCOUNT_REG", "GENERAL_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}, {0, 0x10000000}, {0xffffffff, 0xfffffff}, \ - {0xffffffff, 0x1fffffff} } - -/* 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. */ -extern enum reg_class arc_regno_reg_class[]; -#define REGNO_REG_CLASS(REGNO) \ -(arc_regno_reg_class[REGNO]) - -/* 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) == 'l' ? LPCOUNT_REG /* ??? needed? */ \ - : NO_REGS) - -/* 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_BASE_P(REGNO) \ -((REGNO) < 29 || (unsigned) reg_renumber[REGNO] < 29) -#define REGNO_OK_FOR_INDEX_P(REGNO) \ -((REGNO) < 29 || (unsigned) reg_renumber[REGNO] < 29) - -/* Given an rtx X being reloaded into a reg required to be - in class CLASS, return the class of reg to actually use. - In general this is just CLASS; but on some machines - in some cases it is preferable to use a more restrictive class. */ -#define PREFERRED_RELOAD_CLASS(X,CLASS) \ -(CLASS) - -/* Return the maximum number of consecutive registers - needed to represent mode MODE in a register of class CLASS. */ -#define CLASS_MAX_NREGS(CLASS, MODE) \ -((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD) - -/* The letters I, J, K, L, M, N, O, 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. */ -/* 'I' is used for short immediates (always signed). - 'J' is used for long immediates. - 'K' is used for any constant up to 64 bits (for 64x32 situations?). */ - -/* local to this file */ -#define SMALL_INT(X) ((unsigned) ((X) + 0x100) < 0x200) -/* local to this file */ -#define LARGE_INT(X) \ -((X) >= (-(HOST_WIDE_INT) 0x7fffffff - 1) \ - && (X) <= (unsigned HOST_WIDE_INT) 0xffffffff) - -#define CONST_OK_FOR_LETTER_P(VALUE, C) \ -((C) == 'I' ? SMALL_INT (VALUE) \ - : (C) == 'J' ? LARGE_INT (VALUE) \ - : (C) == 'K' ? 1 \ - : 0) - -/* Similar, but for floating constants, and defining letters G and H. - Here VALUE is the CONST_DOUBLE rtx itself. */ -/* 'G' is used for integer values for the multiplication insns where the - operands are extended from 4 bytes to 8 bytes. - 'H' is used when any 64 bit constant is allowed. */ -#define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) \ -((C) == 'G' ? arc_double_limm_p (VALUE) \ - : (C) == 'H' ? 1 \ - : 0) - -/* A C expression that defines the optional machine-dependent constraint - letters that can be used to segregate specific types of operands, - usually memory references, for the target machine. It should return 1 if - VALUE corresponds to the operand type represented by the constraint letter - C. If C is not defined as an extra constraint, the value returned should - be 0 regardless of VALUE. */ -/* ??? This currently isn't used. Waiting for PIC. */ -#if 0 -#define EXTRA_CONSTRAINT(VALUE, C) \ -((C) == 'R' ? (SYMBOL_REF_FLAG (VALUE) || GET_CODE (VALUE) == LABEL_REF) \ - : 0) -#endif - -/* Stack layout and stack pointer usage. */ - -/* Define this macro if pushing a word onto the stack moves the stack - pointer to 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 - -/* Offset from the stack pointer register to the first location at which - outgoing arguments are placed. */ -#define STACK_POINTER_OFFSET FIRST_PARM_OFFSET (0) - -/* Offset of first parameter from the argument pointer register value. */ -/* 4 bytes for each of previous fp, return address, and previous gp. - 4 byte reserved area for future considerations. */ -#define FIRST_PARM_OFFSET(FNDECL) 16 - -/* A C expression whose value is RTL representing the address in a - stack frame where the pointer to the caller's frame is stored. - Assume that FRAMEADDR is an RTL expression for the address of the - stack frame itself. - - If you don't define this macro, the default is to return the value - of FRAMEADDR--that is, the stack frame address is also the address - of the stack word that points to the previous frame. */ -/* ??? unfinished */ -/*define DYNAMIC_CHAIN_ADDRESS (FRAMEADDR)*/ - -/* A C expression whose value is RTL representing the value of the - return address for the frame COUNT steps up from the current frame. - FRAMEADDR is the frame pointer of the COUNT frame, or the frame - pointer of the COUNT - 1 frame if `RETURN_ADDR_IN_PREVIOUS_FRAME' - is defined. */ -/* The current return address is in r31. The return address of anything - farther back is at [%fp,4]. */ -#if 0 /* The default value should work. */ -#define RETURN_ADDR_RTX(COUNT, FRAME) \ -(((COUNT) == -1) \ - ? gen_rtx (REG, Pmode, 31) \ - : copy_to_reg (gen_rtx (MEM, Pmode, \ - memory_address (Pmode, plus_constant ((FRAME), UNITS_PER_WORD))))) -#endif - -/* Register to use for pushing function arguments. */ -#define STACK_POINTER_REGNUM 28 - -/* Base register for access to local variables of the function. */ -#define FRAME_POINTER_REGNUM 27 - -/* Base register for access to arguments of the function. */ -#define ARG_POINTER_REGNUM FRAME_POINTER_REGNUM - -/* Register in which static-chain is passed to a function. This must - not be a register used by the prologue. */ -#define STATIC_CHAIN_REGNUM 24 - -/* A C expression which is nonzero if a function must have and use a - frame pointer. This expression is evaluated in the reload pass. - If its value is nonzero the function will have a frame pointer. */ -#define FRAME_POINTER_REQUIRED \ -(current_function_calls_alloca) - -/* C statement to store the difference between the frame pointer - and the stack pointer values immediately after the function prologue. */ -#define INITIAL_FRAME_POINTER_OFFSET(VAR) \ -((VAR) = arc_compute_frame_size (get_frame_size ())) - -/* Function argument passing. */ - -/* When a prototype says `char' or `short', really pass an `int'. */ -#define PROMOTE_PROTOTYPES - -/* If defined, the maximum amount of space required for outgoing - arguments will be computed and placed into the variable - `current_function_outgoing_args_size'. No space will be pushed - onto the stack for each call; instead, the function prologue should - increase the stack frame size by this amount. */ -#define ACCUMULATE_OUTGOING_ARGS - -/* 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(DECL, FUNTYPE, SIZE) 0 - -/* 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. */ -#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. */ -#define INIT_CUMULATIVE_ARGS(CUM,FNTYPE,LIBNAME,INDIRECT) \ -((CUM) = 0) - -/* The number of registers used for parameter passing. Local to this file. */ -#define MAX_ARC_PARM_REGS 8 - -/* 1 if N is a possible register number for function argument passing. */ -#define FUNCTION_ARG_REGNO_P(N) \ -((unsigned) (N) < MAX_ARC_PARM_REGS) - -/* The ROUND_ADVANCE* macros are local to this file. */ -/* Round SIZE up to a word boundary. */ -#define ROUND_ADVANCE(SIZE) \ -(((SIZE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD) - -/* Round arg MODE/TYPE up to the next word boundary. */ -#define ROUND_ADVANCE_ARG(MODE, TYPE) \ -((MODE) == BLKmode \ - ? ROUND_ADVANCE (int_size_in_bytes (TYPE)) \ - : ROUND_ADVANCE (GET_MODE_SIZE (MODE))) - -/* Round CUM up to the necessary point for argument MODE/TYPE. */ -#define ROUND_ADVANCE_CUM(CUM, MODE, TYPE) \ -((((MODE) == BLKmode ? TYPE_ALIGN (TYPE) : GET_MODE_BITSIZE (MODE)) \ - > BITS_PER_WORD) \ - ? ((CUM) + 1 & ~1) \ - : (CUM)) - -/* Return boolean indicating arg of type TYPE and mode MODE will be passed in - a reg. This includes arguments that have to be passed by reference as the - pointer to them is passed in a reg if one is available (and that is what - we're given). - When passing arguments NAMED is always 1. When receiving arguments NAMED - is 1 for each argument except the last in a stdarg/varargs function. In - a stdarg function we want to treat the last named arg as named. In a - varargs function we want to treat the last named arg (which is - `__builtin_va_alist') as unnamed. - This macro is only used in this file. */ -extern int current_function_varargs; -#define PASS_IN_REG_P(CUM, MODE, TYPE, NAMED) \ -((!current_function_varargs || (NAMED)) \ - && (CUM) < MAX_ARC_PARM_REGS \ - && ((ROUND_ADVANCE_CUM ((CUM), (MODE), (TYPE)) \ - + ROUND_ADVANCE_ARG ((MODE), (TYPE)) \ - <= MAX_ARC_PARM_REGS))) - -/* 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 the ARC the first MAX_ARC_PARM_REGS args are normally in registers - and the rest are pushed. */ -#define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \ -(PASS_IN_REG_P ((CUM), (MODE), (TYPE), (NAMED)) \ - ? gen_rtx (REG, (MODE), ROUND_ADVANCE_CUM ((CUM), (MODE), (TYPE))) \ - : 0) - -/* A C expression for the number of words, at the beginning of an - argument, must be put in registers. The value must be zero for - arguments that are passed entirely in registers or that are entirely - pushed on the stack. - - On some machines, certain arguments must be passed partially in - registers and partially in memory. On these machines, typically the - first @var{n} words of arguments are passed in registers, and the rest - on the stack. If a multi-word argument (a @code{double} or a - structure) crosses that boundary, its first few words must be passed - in registers and the rest must be pushed. This macro tells the - compiler when this occurs, and how many of the words should go in - registers. */ -#define FUNCTION_ARG_PARTIAL_NREGS(CUM, MODE, TYPE, NAMED) 0 - -/* A C expression that indicates when an argument must be passed by - reference. If nonzero for an argument, a copy of that argument is - made in memory and a pointer to the argument is passed instead of - the argument itself. The pointer is passed in whatever way is - appropriate for passing a pointer to that type. */ -/* All aggregates and arguments greater than 8 bytes are passed this way. */ -#define FUNCTION_ARG_PASS_BY_REFERENCE(CUM, MODE, TYPE, NAMED) \ -(TYPE \ - && (AGGREGATE_TYPE_P (TYPE) \ - || int_size_in_bytes (TYPE) > 8)) - -/* A C expression that indicates when it is the called function's - responsibility to make copies of arguments passed by reference. - If the callee can determine that the argument won't be modified, it can - avoid the copy. */ -/* ??? We'd love to be able to use NAMED here. Unfortunately, it doesn't - include the last named argument so we keep track of the args ourselves. */ - -#define FUNCTION_ARG_CALLEE_COPIES(CUM, MODE, TYPE, NAMED) \ -FUNCTION_ARG_PASS_BY_REFERENCE ((CUM), (MODE), (TYPE), (NAMED)) - -/* 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) = (ROUND_ADVANCE_CUM ((CUM), (MODE), (TYPE)) \ - + ROUND_ADVANCE_ARG ((MODE), (TYPE)))) - -/* If defined, a C expression that gives the alignment boundary, in bits, - of an argument with the specified mode and type. If it is not defined, - PARM_BOUNDARY is used for all arguments. */ -#define FUNCTION_ARG_BOUNDARY(MODE, TYPE) \ -(((TYPE) ? TYPE_ALIGN (TYPE) : GET_MODE_BITSIZE (MODE)) <= PARM_BOUNDARY \ - ? PARM_BOUNDARY \ - : 2 * PARM_BOUNDARY) - -/* This macro offers an alternative - to using `__builtin_saveregs' and defining the macro - `EXPAND_BUILTIN_SAVEREGS'. Use it to store the anonymous register - arguments into the stack so that all the arguments appear to have - been passed consecutively on the stack. Once this is done, you - can use the standard implementation of varargs that works for - machines that pass all their arguments on the stack. - - The argument ARGS_SO_FAR is the `CUMULATIVE_ARGS' data structure, - containing the values that obtain after processing of the named - arguments. The arguments MODE and TYPE describe the last named - argument--its machine mode and its data type as a tree node. - - The macro implementation should do two things: first, push onto the - stack all the argument registers *not* used for the named - arguments, and second, store the size of the data thus pushed into - the `int'-valued variable whose name is supplied as the argument - PRETEND_SIZE. The value that you store here will serve as - additional offset for setting up the stack frame. - - If the argument NO_RTL is nonzero, it means that the - arguments of the function are being analyzed for the second time. - This happens for an inline function, which is not actually - compiled until the end of the source file. The macro - `SETUP_INCOMING_VARARGS' should not generate any instructions in - this case. */ - -#define SETUP_INCOMING_VARARGS(ARGS_SO_FAR, MODE, TYPE, PRETEND_SIZE, NO_RTL) \ -arc_setup_incoming_varargs(&ARGS_SO_FAR, MODE, TYPE, &PRETEND_SIZE, NO_RTL) - -/* Function results. */ - -/* 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. */ -#define LIBCALL_VALUE(MODE) gen_rtx (REG, MODE, 0) - -/* 1 if N is a possible register number for a function value - as seen by the caller. */ -/* ??? What about r1 in DI/DF values. */ -#define FUNCTION_VALUE_REGNO_P(N) ((N) == 0) - -/* A C expression which can inhibit the returning of certain function - values in registers, based on the type of value. A nonzero value says - to return the function value in memory, just as large structures are - always returned. Here TYPE will be a C expression of type `tree', - representing the data type of the value. */ -#define RETURN_IN_MEMORY(TYPE) \ -(AGGREGATE_TYPE_P (TYPE) \ - || int_size_in_bytes (TYPE) > 8 \ - || TREE_ADDRESSABLE (TYPE)) - -/* Tell GCC to use RETURN_IN_MEMORY. */ -#define DEFAULT_PCC_STRUCT_RETURN 0 - -/* Register in which address to store a structure value - is passed to a function, or 0 to use `invisible' first argument. */ -#define STRUCT_VALUE 0 - -/* Function entry and exit. */ - -/* 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. */ -#define FUNCTION_PROLOGUE(FILE, SIZE) \ -arc_output_function_prologue (FILE, SIZE) - -/* 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 - -/* 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) \ -arc_output_function_epilogue (FILE, SIZE) - -/* Epilogue delay slots. */ -#define DELAY_SLOTS_FOR_EPILOGUE arc_delay_slots_for_epilogue () - -#define ELIGIBLE_FOR_EPILOGUE_DELAY(TRIAL, SLOTS_FILLED) \ -arc_eligible_for_epilogue_delay (TRIAL, SLOTS_FILLED) - -/* Output assembler code to FILE to increment profiler label # LABELNO - for profiling a function entry. */ -#define FUNCTION_PROFILER(FILE, LABELNO) - -/* Trampolines. */ -/* ??? This doesn't work yet because GCC will use as the address of a nested - function the address of the trampoline. We need to use that address - right shifted by 2. It looks like we'll need PSImode after all. :-( */ - -/* Output assembler code for a block containing the constant parts - of a trampoline, leaving space for the variable parts. */ -/* On the ARC, the trampoline is quite simple as we have 32 bit immediate - constants. - - mov r24,STATIC - j.nd FUNCTION -*/ -#define TRAMPOLINE_TEMPLATE(FILE) \ -do { \ - ASM_OUTPUT_INT (FILE, GEN_INT (0x631f7c00)); \ - ASM_OUTPUT_INT (FILE, const0_rtx); \ - ASM_OUTPUT_INT (FILE, GEN_INT (0x381f0000)); \ - ASM_OUTPUT_INT (FILE, const0_rtx); \ -} while (0) - -/* Length in units of the trampoline for entering a nested function. */ -#define TRAMPOLINE_SIZE 16 - -/* 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) \ -do { \ - emit_move_insn (gen_rtx (MEM, SImode, plus_constant (TRAMP, 4)), CXT); \ - emit_move_insn (gen_rtx (MEM, SImode, plus_constant (TRAMP, 12)), FNADDR); \ - emit_insn (gen_flush_icache (validize_mem (gen_rtx (MEM, SImode, TRAMP)))); \ -} while (0) - -/* Library calls. */ - -/* Generate calls to memcpy, memcmp and memset. */ -#define TARGET_MEM_FUNCTIONS - -/* Addressing modes, and classification of registers for them. */ - -/* Maximum number of registers that can appear in a valid memory address. */ -/* The `ld' insn allows 2, but the `st' insn only allows 1. */ -#define MAX_REGS_PER_ADDRESS 1 - -/* We have pre inc/dec (load/store with update). */ -#define HAVE_PRE_INCREMENT 1 -#define HAVE_PRE_DECREMENT 1 - -/* 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) - -/* Nonzero if the constant value X is a legitimate general operand. - We can handle any 32 or 64 bit constant. */ -/* "1" should work since the largest constant should be a 64 bit critter. */ -/* ??? Not sure what to do for 64x32 compiler. */ -#define LEGITIMATE_CONSTANT_P(X) 1 - -/* The macros REG_OK_FOR..._P assume that the arg is a REG rtx - and check its validity for a certain class. - We have two alternate definitions for each of them. - The usual definition accepts all pseudo regs; the other rejects - them unless they have been allocated suitable hard regs. - The symbol REG_OK_STRICT causes the latter definition to be used. - - Most source files want to accept pseudo regs in the hope that - they will get allocated to the class that the insn wants them to be in. - Source files for reload pass need to be strict. - After reload, it makes no difference, since pseudo regs have - been eliminated by then. */ - -#ifndef REG_OK_STRICT - -/* Nonzero if X is a hard reg that can be used as an index - or if it is a pseudo reg. */ -#define REG_OK_FOR_INDEX_P(X) \ -((unsigned) REGNO (X) - 29 >= FIRST_PSEUDO_REGISTER - 29) -/* 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) - 29 >= FIRST_PSEUDO_REGISTER - 29) - -#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. */ -/* The `ld' insn allows [reg],[reg+shimm],[reg+limm],[reg+reg],[limm] - but the `st' insn only allows [reg],[reg+shimm],[limm]. - The only thing we can do is only allow the most strict case `st' and hope - other parts optimize out the restrictions for `ld'. */ - -/* local to this file */ -#define RTX_OK_FOR_BASE_P(X) \ -(REG_P (X) && REG_OK_FOR_BASE_P (X)) - -/* local to this file */ -#define RTX_OK_FOR_INDEX_P(X) \ -(0 && /*???*/ REG_P (X) && REG_OK_FOR_INDEX_P (X)) - -/* local to this file */ -/* ??? Loads can handle any constant, stores can only handle small ones. */ -#define RTX_OK_FOR_OFFSET_P(X) \ -(GET_CODE (X) == CONST_INT && SMALL_INT (INTVAL (X))) - -#define LEGITIMATE_OFFSET_ADDRESS_P(MODE, X) \ -(GET_CODE (X) == PLUS \ - && RTX_OK_FOR_BASE_P (XEXP (X, 0)) \ - && (RTX_OK_FOR_INDEX_P (XEXP (X, 1)) \ - || RTX_OK_FOR_OFFSET_P (XEXP (X, 1)))) - -#define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR) \ -{ if (RTX_OK_FOR_BASE_P (X)) \ - goto ADDR; \ - if (LEGITIMATE_OFFSET_ADDRESS_P ((MODE), (X))) \ - goto ADDR; \ - if (GET_CODE (X) == CONST_INT && LARGE_INT (INTVAL (X))) \ - goto ADDR; \ - if (GET_CODE (X) == SYMBOL_REF \ - || GET_CODE (X) == LABEL_REF \ - || GET_CODE (X) == CONST) \ - goto ADDR; \ - if ((GET_CODE (X) == PRE_DEC || GET_CODE (X) == PRE_INC) \ - /* We're restricted here by the `st' insn. */ \ - && RTX_OK_FOR_BASE_P (XEXP ((X), 0))) \ - 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. */ - -#define LEGITIMIZE_ADDRESS(X, OLDX, MODE, WIN) - -/* Go to LABEL if ADDR (a legitimate address expression) - has an effect that depends on the machine mode it is used for. */ -#define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR, LABEL) \ -{ if (GET_CODE (ADDR) == PRE_DEC) \ - goto LABEL; \ - if (GET_CODE (ADDR) == PRE_INC) \ - goto LABEL; \ -} - -/* Condition code usage. */ - -/* Some insns set all condition code flags, some only set the ZNC flags, and - some only set the ZN flags. */ - -#define EXTRA_CC_MODES CCZNCmode, CCZNmode - -#define EXTRA_CC_NAMES "CCZNC", "CCZN" - -/* Given a comparison code (EQ, NE, etc.) and the first operand of a COMPARE, - return the mode to be used for the comparison. */ -extern enum machine_mode arc_select_cc_mode (); -#define SELECT_CC_MODE(OP, X, Y) \ -arc_select_cc_mode (OP, X, Y) - -/* Return non-zero if SELECT_CC_MODE will never return MODE for a - floating point inequality comparison. */ -#define REVERSIBLE_CC_MODE(MODE) 1 /*???*/ - -/* Costs. */ - -/* An insn is define to cost 4 "units", and we work from there. - COSTS_N_INSNS (N) is defined as (N) * 4 - 2 so that seems reasonable. - Some values are supposed to be defined relative to each other and thus - aren't necessarily related to COSTS_N_INSNS. */ - -/* 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. */ -/* Small integers are as cheap as registers. 4 byte values can be fetched - as immediate constants - let's give that the cost of an extra insn. */ -#define CONST_COSTS(X, CODE, OUTER_CODE) \ - case CONST_INT : \ - if (SMALL_INT (INTVAL (X))) \ - return 0; \ - /* fall through */ \ - case CONST : \ - case LABEL_REF : \ - case SYMBOL_REF : \ - return 4; \ - case CONST_DOUBLE : \ - { \ - rtx high, low; \ - split_double (X, &high, &low); \ - return 4 * (!SMALL_INT (INTVAL (high)) \ - + !SMALL_INT (INTVAL (low))); \ - } - -/* Compute the cost of an address. */ -#define ADDRESS_COST(ADDR) (REG_P (ADDR) ? 1 : arc_address_cost (ADDR)) - -/* Compute extra cost of moving data between one register class - and another. */ -#define REGISTER_MOVE_COST(CLASS1, CLASS2) 2 - -/* Compute the cost of moving data between registers and memory. */ -/* Memory is 3 times as expensive as registers. - ??? Is that the right way to look at it? */ -#define MEMORY_MOVE_COST(MODE,CLASS,IN) \ -(GET_MODE_SIZE (MODE) <= UNITS_PER_WORD ? 6 : 12) - -/* The cost of a branch insn. */ -/* ??? What's the right value here? Branches are certainly more - expensive than reg->reg moves. */ -#define BRANCH_COST 2 - -/* Provide the costs of a rtl expression. This is in the body of a - switch on CODE. The purpose for the cost of MULT is to encourage - `synth_mult' to find a synthetic multiply when reasonable. - - If we need more than 12 insns to do a multiply, then go out-of-line, - since the call overhead will be < 10% of the cost of the multiply. */ -#define RTX_COSTS(X, CODE, OUTER_CODE) \ - case ASHIFT : \ - case ASHIFTRT : \ - case LSHIFTRT : \ - if (TARGET_SHIFTER) \ - return COSTS_N_INSNS (1); \ - if (GET_CODE (XEXP ((X), 1)) != CONST_INT) \ - return COSTS_N_INSNS (16); \ - return COSTS_N_INSNS (INTVAL (XEXP ((X), 1))); - -/* Nonzero if access to memory by bytes is slow and undesirable. - For RISC chips, it means that access to memory by bytes is no - better than access by words when possible, so grab a whole word - and maybe make use of that. */ -#define SLOW_BYTE_ACCESS 1 - -/* Define this macro if it is as good or better to call a constant - function address than to call an address kept in a register. */ -/* On the ARC, calling through registers is slow. */ -#define NO_FUNCTION_CSE - -/* Define this macro if it is as good or better for a function to call - itself with an explicit address than to call an address kept in a - register. */ -/* On the ARC, calling through registers is slow. */ -#define NO_RECURSIVE_FUNCTION_CSE - -/* Section selection. */ -/* WARNING: These section names also appear in dwarfout.c. */ - -/* The names of the text, data, and readonly-data sections are runtime - selectable. */ - -#define ARC_SECTION_FORMAT "\t.section %s" -#define ARC_DEFAULT_TEXT_SECTION ".text" -#define ARC_DEFAULT_DATA_SECTION ".data" -#define ARC_DEFAULT_RODATA_SECTION ".rodata" - -extern char *arc_text_section,*arc_data_section,*arc_rodata_section; - -/* initfini.c uses this in an asm. */ -#if defined (CRT_INIT) || defined (CRT_FINI) -#define TEXT_SECTION_ASM_OP "\t.section .text" -#else -#define TEXT_SECTION_ASM_OP arc_text_section /*"\t.section .text"*/ -#endif -#define DATA_SECTION_ASM_OP arc_data_section /*"\t.section .data"*/ - -#undef CONST_SECTION_ASM_OP -#define CONST_SECTION_ASM_OP arc_rodata_section /*"\t.section .rodata"*/ - -#define BSS_SECTION_ASM_OP "\t.section .bss" - -/* Define this macro if jump tables (for tablejump insns) should be - output in the text section, along with the assembler instructions. - Otherwise, the readonly data section is used. - This macro is irrelevant if there is no separate readonly data section. */ -/*#define JUMP_TABLES_IN_TEXT_SECTION*/ - -/* Define this macro if references to a symbol must be treated - differently depending on something about the variable or - function named by the symbol (such as what section it is in). - - The macro definition, if any, is executed immediately after the - rtl for DECL or other node is created. - The value of the rtl will be a `mem' whose address is a - `symbol_ref'. - - The usual thing for this macro to do is to store a flag in the - `symbol_ref' (such as `SYMBOL_REF_FLAG') or to store a modified - name string in the `symbol_ref' (if one bit is not enough - information). */ - -/* On the ARC, function addresses are not the same as normal addresses. - Branch to absolute address insns take an address that is right-shifted - by 2. We encode the fact that we have a function here, and then emit a - special assembler op when outputting the address. */ -#define ENCODE_SECTION_INFO(DECL) \ -do { \ - if (TREE_CODE (DECL) == FUNCTION_DECL) \ - SYMBOL_REF_FLAG (XEXP (DECL_RTL (DECL), 0)) = 1; \ -} while (0) - -/* Decode SYM_NAME and store the real name part in VAR, sans - the characters that encode section info. Define this macro if - ENCODE_SECTION_INFO alters the symbol's name string. */ -/*#define STRIP_NAME_ENCODING(VAR, SYM_NAME)*/ - -/* For DWARF. Marginally different than default so output is "prettier" - (and consistent with above). */ -#define PUSHSECTION_FORMAT "\t%s %s\n" - -/* Tell crtstuff.c we're using ELF. */ -#define OBJECT_FORMAT_ELF - -/* PIC */ - -/* The register number of the register used to address a table of static - data addresses in memory. In some cases this register is defined by a - processor's ``application binary interface'' (ABI). When this macro - is defined, RTL is generated for this register once, as with the stack - pointer and frame pointer registers. If this macro is not defined, it - is up to the machine-dependent files to allocate such a register (if - necessary). */ -#define PIC_OFFSET_TABLE_REGNUM 26 - -/* Define this macro if the register defined by PIC_OFFSET_TABLE_REGNUM is - clobbered by calls. Do not define this macro if PIC_OFFSET_TABLE_REGNUM - is not defined. */ -/* This register is call-saved on the ARC. */ -/*#define PIC_OFFSET_TABLE_REG_CALL_CLOBBERED*/ - -/* By generating position-independent code, when two different programs (A - and B) share a common library (libC.a), the text of the library can be - shared whether or not the library is linked at the same address for both - programs. In some of these environments, position-independent code - requires not only the use of different addressing modes, but also - special code to enable the use of these addressing modes. - - The FINALIZE_PIC macro serves as a hook to emit these special - codes once the function is being compiled into assembly code, but not - before. (It is not done before, because in the case of compiling an - inline function, it would lead to multiple PIC prologues being - included in functions which used inline functions and were compiled to - assembly language.) */ - -#define FINALIZE_PIC arc_finalize_pic () - -/* A C expression that is nonzero if X is a legitimate immediate - operand on the target machine when generating position independent code. - You can assume that X satisfies CONSTANT_P, so you need not - check this. You can also assume `flag_pic' is true, so you need not - check it either. You need not define this macro if all constants - (including SYMBOL_REF) can be immediate operands when generating - position independent code. */ -/*#define LEGITIMATE_PIC_OPERAND_P(X)*/ - -/* Control the assembler format that we output. */ - -/* Output at beginning of assembler file. */ -extern void arc_asm_file_start (); -#undef ASM_FILE_START -#define ASM_FILE_START(FILE) arc_asm_file_start (FILE) - -/* A C statement to output assembler commands which will identify the - object file as having been compiled with GNU CC (or another GNU - compiler). */ -#undef ASM_IDENTIFY_GCC -#define ASM_IDENTIFY_GCC(FILE) /* nothing */ - -/* Needed because we define ASM_IDENTIFY_GCC. */ -#define ASM_IDENTIFY_LANGUAGE(FILE) output_lang_identify (FILE) - -/* A C string constant describing how to begin a comment in the target - assembler language. The compiler assumes that the comment will - end at the end of the line. */ -#define ASM_COMMENT_START ";" - -/* 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 "" - -/* This is how to output an assembler line defining a `char' constant. */ -#define ASM_OUTPUT_CHAR(FILE, VALUE) \ -( fprintf (FILE, "\t.byte\t"), \ - output_addr_const (FILE, (VALUE)), \ - fprintf (FILE, "\n")) - -/* This is how to output an assembler line defining a `short' constant. */ -#define ASM_OUTPUT_SHORT(FILE, VALUE) \ -( fprintf (FILE, "\t.hword\t"), \ - output_addr_const (FILE, (VALUE)), \ - fprintf (FILE, "\n")) - -/* This is how to output an assembler line defining an `int' constant. - We also handle symbol output here. Code addresses must be right shifted - by 2 because that's how the jump instruction wants them. */ -#define ASM_OUTPUT_INT(FILE, VALUE) \ -do { \ - fprintf (FILE, "\t.word\t"); \ - if ((GET_CODE (VALUE) == SYMBOL_REF && SYMBOL_REF_FLAG (VALUE)) \ - || GET_CODE (VALUE) == LABEL_REF) \ - { \ - fprintf (FILE, "%%st("); \ - output_addr_const (FILE, (VALUE)); \ - fprintf (FILE, ")"); \ - } \ - else \ - output_addr_const (FILE, (VALUE)); \ - fprintf (FILE, "\n"); \ -} while (0) - -/* This is how to output an assembler line defining a `float' constant. */ -#define ASM_OUTPUT_FLOAT(FILE, VALUE) \ -{ \ - long t; \ - char str[30]; \ - REAL_VALUE_TO_TARGET_SINGLE ((VALUE), t); \ - REAL_VALUE_TO_DECIMAL ((VALUE), "%.20e", str); \ - fprintf (FILE, "\t.word\t0x%lx %s %s\n", \ - t, ASM_COMMENT_START, str); \ -} - -/* This is how to output an assembler line defining a `double' constant. */ -#define ASM_OUTPUT_DOUBLE(FILE, VALUE) \ -{ \ - long t[2]; \ - char str[30]; \ - REAL_VALUE_TO_TARGET_DOUBLE ((VALUE), t); \ - REAL_VALUE_TO_DECIMAL ((VALUE), "%.20e", str); \ - fprintf (FILE, "\t.word\t0x%lx %s %s\n\t.word\t0x%lx\n", \ - t[0], ASM_COMMENT_START, str, t[1]); \ -} - -/* This is how to output an assembler line for a numeric constant byte. */ -#define ASM_BYTE_OP ".byte" -#define ASM_OUTPUT_BYTE(FILE, VALUE) \ - fprintf (FILE, "\t%s\t0x%x\n", ASM_BYTE_OP, (VALUE)) - -/* The assembler's parentheses characters. */ -#define ASM_OPEN_PAREN "(" -#define ASM_CLOSE_PAREN ")" - -/* 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 ("\t.global\t", FILE); \ - assemble_name (FILE, NAME); \ - fputs ("\n", FILE); \ -} while (0) - -/* A C statement (sans semicolon) to output on FILE an assembler pseudo-op to - declare a library function name external. The name of the library function - is given by SYMREF, which has type RTX and is a SYMBOL_REF. */ -#if 0 -/* On the ARC we want to have libgcc's for multiple cpus in one binary. - We can't use `assemble_name' here as that will call ASM_OUTPUT_LABELREF - and we'll get another suffix added on if -mmangle-cpu. */ -extern char *arc_mangle_cpu; -#define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, SYMREF) \ -do { \ - if (TARGET_MANGLE_CPU_LIBGCC) \ - { \ - fprintf (FILE, "\t.rename\t_%s, _%s%s\n", \ - XSTR (SYMREF, 0), XSTR (SYMREF, 0), \ - arc_mangle_suffix); \ - } \ -} while (0) -#endif - -/* This is how to output a reference to a user-level label named NAME. - `assemble_name' uses this. */ -/* We mangle all user labels to provide protection from linking code - compiled for different cpus. */ -/* We work around a dwarfout.c deficiency by watching for labels from it and - not adding the '_' prefix nor the cpu suffix. There is a comment in - dwarfout.c that says it should be using ASM_OUTPUT_INTERNAL_LABEL. */ -extern char *arc_mangle_cpu; -#define ASM_OUTPUT_LABELREF(FILE, NAME) \ -do { \ - if ((NAME)[0] == '.' && (NAME)[1] == 'L') \ - fprintf (FILE, "%s", NAME); \ - else \ - { \ - fputc ('_', FILE); \ - if (TARGET_MANGLE_CPU && arc_mangle_cpu != NULL) \ - fprintf (FILE, "%s_", arc_mangle_cpu); \ - fprintf (FILE, "%s", NAME); \ - } \ -} while (0) - -/* This is how to output a definition of an internal numbered label where - PREFIX is the class of label and NUM is the number within the class. */ -#undef ASM_OUTPUT_INTERNAL_LABEL -#define ASM_OUTPUT_INTERNAL_LABEL(FILE, PREFIX, NUM) \ -do { \ - arc_ccfsm_at_label (PREFIX, NUM); \ - fprintf (FILE, ".%s%d:\n", PREFIX, NUM); \ -} 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))) - -/* Assembler pseudo-op to equate one value with another. */ -/* ??? This is needed because dwarfout.c provides a default definition too - late for defaults.h (which contains the default definition of ASM_OUTPUT_DEF - that we use). */ -#define SET_ASM_OP ".set" - -/* A C statement (sans semicolon) to output an element in the table of - global constructors. */ -#undef ASM_OUTPUT_CONSTRUCTOR -#define ASM_OUTPUT_CONSTRUCTOR(FILE, NAME) \ -do { \ - ctors_section (); \ - fprintf (FILE, "\t.word\t%%st("); \ - assemble_name (FILE, NAME); \ - fprintf (FILE, ")\n"); \ -} while (0) - -/* A C statement (sans semicolon) to output an element in the table of - global destructors. */ -#undef ASM_OUTPUT_DESTRUCTOR -#define ASM_OUTPUT_DESTRUCTOR(FILE, NAME) \ -do { \ - dtors_section (); \ - fprintf (FILE, "\t.word\t%%st("); \ - assemble_name (FILE, NAME); \ - fprintf (FILE, ")\n"); \ -} while (0) - -/* 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", "fp", "sp", "ilink1", "ilink2", "blink", \ - "r32", "r33", "r34", "r35", "r36", "r37", "r38", "r39", \ - "r40", "r41", "r42", "r43", "r44", "r45", "r46", "r47", \ - "r48", "r49", "r50", "r51", "r52", "r53", "r54", "r55", \ - "r56", "r57", "r58", "r59", "lp_count", "cc"} - -/* Entry to the insn conditionalizer. */ -#define FINAL_PRESCAN_INSN(INSN, OPVEC, NOPERANDS) \ -arc_final_prescan_insn (INSN, OPVEC, NOPERANDS) - -/* A C expression which evaluates to true if CODE is a valid - punctuation character for use in the `PRINT_OPERAND' macro. */ -extern char arc_punct_chars[]; -#define PRINT_OPERAND_PUNCT_VALID_P(CHAR) \ -arc_punct_chars[(unsigned char) (CHAR)] - -/* 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. */ -#define PRINT_OPERAND(FILE, X, CODE) \ -arc_print_operand (FILE, X, CODE) - -/* A C compound statement to output to stdio stream STREAM the - assembler syntax for an instruction operand that is a memory - reference whose address is ADDR. ADDR is an RTL expression. - - On some machines, the syntax for a symbolic address depends on - the section that the address refers to. On these machines, - define the macro `ENCODE_SECTION_INFO' to store the information - into the `symbol_ref', and then check for it here. */ -#define PRINT_OPERAND_ADDRESS(FILE, ADDR) \ -arc_print_operand_address (FILE, ADDR) - -/* This is how to output an element of a case-vector that is absolute. */ -#define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \ -do { \ - char label[30]; \ - ASM_GENERATE_INTERNAL_LABEL (label, "L", VALUE); \ - fprintf (FILE, "\t.word %%st("); \ - assemble_name (FILE, label); \ - fprintf (FILE, ")\n"); \ -} while (0) - -/* This is how to output an element of a case-vector that is relative. */ -#define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \ -do { \ - char label[30]; \ - ASM_GENERATE_INTERNAL_LABEL (label, "L", VALUE); \ - fprintf (FILE, "\t.word %%st("); \ - assemble_name (FILE, label); \ - fprintf (FILE, "-"); \ - ASM_GENERATE_INTERNAL_LABEL (label, "L", REL); \ - assemble_name (FILE, label); \ - fprintf (FILE, ")\n"); \ -} while (0) - -/* The desired alignment for the location counter at the beginning - of a loop. */ -/* On the ARC, align loops to 32 byte boundaries (cache line size) - if -malign-loops. */ -#define LOOP_ALIGN(LABEL) (TARGET_ALIGN_LOOPS ? 5 : 0) - -/* 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) \ -do { if ((LOG) != 0) fprintf (FILE, "\t.align %d\n", 1 << (LOG)); } while (0) - -/* Debugging information. */ - -/* Generate DBX and DWARF debugging information. */ -#define DBX_DEBUGGING_INFO -#define DWARF_DEBUGGING_INFO - -/* Prefer STABS (for now). */ -#undef PREFERRED_DEBUGGING_TYPE -#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG - -/* How to renumber registers for dbx and gdb. */ -#define DBX_REGISTER_NUMBER(REGNO) (REGNO) - -/* Turn off splitting of long stabs. */ -#define DBX_CONTIN_LENGTH 0 - -/* Miscellaneous. */ - -/* Specify the machine mode that this machine uses - for the index in the tablejump instruction. */ -#define CASE_VECTOR_MODE Pmode - -/* 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. */ -/* It's not clear what PIC will look like or whether we want to use -fpic - for the embedded form currently being talked about. For now require -fpic - to get pc relative switch tables. */ -/*#define CASE_VECTOR_PC_RELATIVE 1 */ - -/* Define if operations between registers always perform the operation - on the full register even if a narrower mode is specified. */ -#define WORD_REGISTER_OPERATIONS - -/* Define if loading in MODE, an integral mode narrower than BITS_PER_WORD - will either zero-extend or sign-extend. The value of this macro should - be the code that says which one of the two operations is implicitly - done, NIL if none. */ -#define LOAD_EXTEND_OP(MODE) ZERO_EXTEND - -/* 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 - -/* Max number of bytes we can move from memory to memory - in one reasonably fast instruction. */ -#define MOVE_MAX 4 - -/* Define this to be nonzero if shift instructions ignore all but the low-order - few bits. */ -#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 - -/* 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. */ -/* ??? The arc doesn't have full 32 bit pointers, but making this PSImode has - its own problems (you have to add extendpsisi2 and trucnsipsi2 but how does - one do it without getting excess code?). Try to avoid it. */ -#define Pmode SImode - -/* A function address in a call instruction. */ -#define FUNCTION_MODE SImode - -/* A C expression whose value is nonzero if IDENTIFIER with arguments ARGS - is a valid machine specific attribute for DECL. - The attributes in ATTRIBUTES have previously been assigned to TYPE. */ -extern int arc_valid_machine_attribute (); -#define VALID_MACHINE_DECL_ATTRIBUTE(DECL, ATTRIBUTES, IDENTIFIER, ARGS) \ -arc_valid_machine_decl_attribute (DECL, ATTRIBUTES, IDENTIFIER, ARGS) - -/* A C expression that returns zero if the attributes on TYPE1 and TYPE2 are - incompatible, one if they are compatible, and two if they are - nearly compatible (which causes a warning to be generated). */ -extern int arc_comp_type_attributes (); -#define COMP_TYPE_ATTRIBUTES(TYPE1, TYPE2) \ -arc_comp_type_attributes (TYPE1, TYPE2) - -/* Give newly defined TYPE some default attributes. */ -extern void arc_set_default_type_attributes (); -#define SET_DEFAULT_TYPE_ATTRIBUTES(TYPE) \ -arc_set_default_type_attributes (TYPE) - -/* Define this if the target system supports the function - atexit from the ANSI C standard. If this is not defined, - and INIT_SECTION_ASM_OP is not defined, a default - exit function will be provided to support C++. */ -#define HAVE_ATEXIT - -/* alloca should avoid clobbering the old register save area. */ -/* ??? Not defined in tm.texi. */ -#define SETJMP_VIA_SAVE_AREA - -/* Define the information needed to generate branch and scc insns. This is - stored from the compare operation. Note that we can't use "rtx" here - since it hasn't been defined! */ -extern struct rtx_def *arc_compare_op0, *arc_compare_op1; - -/* Define the function that build the compare insn for scc and bcc. */ -extern struct rtx_def *gen_compare_reg (); - -/* Declarations for various fns used in the .md file. */ -extern char *output_shift (); - -/* ARC function types. */ -enum arc_function_type { - ARC_FUNCTION_UNKNOWN, ARC_FUNCTION_NORMAL, - /* These are interrupt handlers. The name corresponds to the register - name that contains the return address. */ - ARC_FUNCTION_ILINK1, ARC_FUNCTION_ILINK2 -}; -#define ARC_INTERRUPT_P(TYPE) \ -((TYPE) == ARC_FUNCTION_ILINK1 || (TYPE) == ARC_FUNCTION_ILINK2) -/* Compute the type of a function from its DECL. */ -enum arc_function_type arc_compute_function_type (); |