+++ /dev/null
-/* Definitions of target machine for Mitsubishi D30V.
- Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002
- Free Software Foundation, Inc.
- Contributed by Cygnus Solutions.
-
- 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. */
-
-#ifndef GCC_D30V_H
-
-/* D30V specific macros */
-
-/* Align an address */
-#define D30V_ALIGN(addr,align) (((addr) + (align) - 1) & ~((align) - 1))
-
-\f
-/* Driver configuration */
-
-/* Defined in svr4.h. */
-/* #define SWITCH_TAKES_ARG(CHAR) */
-
-/* Defined in svr4.h. */
-/* #define WORD_SWITCH_TAKES_ARG(NAME) */
-
-/* Defined in svr4.h. */
-#undef ASM_SPEC
-#define ASM_SPEC "\
-%{!mno-asm-optimize: %{O*: %{!O0: -O} %{O0: %{masm-optimize: -O}}}} \
-%{v} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*}"
-
-/* Defined in svr4.h. */
-/* #define ASM_FINAL_SPEC "" */
-
-/* Defined in svr4.h. */
-#undef LINK_SPEC
-#define LINK_SPEC "\
-%{h*} %{v:-V} \
-%{b} %{Wl,*:%*} \
-%{static:-dn -Bstatic} \
-%{shared:-G -dy -z text} \
-%{symbolic:-Bsymbolic -G -dy -z text} \
-%{G:-G} \
-%{YP,*} \
-%{Qy:} %{!Qn:-Qy} \
-%{mextmem: -m d30v_e} %{mextmemory: -m d30v_e} %{monchip: -m d30v_o}"
-
-/* Defined in svr4.h. */
-#undef LIB_SPEC
-#define LIB_SPEC "--start-group -lsim -lc --end-group"
-
-/* Defined in svr4.h. */
-#undef STARTFILE_SPEC
-#define STARTFILE_SPEC "crt0%O%s crtbegin%O%s"
-
-/* Defined in svr4.h. */
-#undef ENDFILE_SPEC
-#define ENDFILE_SPEC "crtend%O%s"
-
-/* Defined in svr4.h for host compilers. */
-/* #define MD_EXEC_PREFIX "" */
-
-/* Defined in svr4.h for host compilers. */
-/* #define MD_STARTFILE_PREFIX "" */
-
-\f
-/* Run-time target specifications */
-
-#define CPP_PREDEFINES "-D__D30V__ -Amachine=d30v"
-
-/* This declaration should be present. */
-extern int target_flags;
-
-#define MASK_NO_COND_MOVE 0x00000001 /* disable conditional moves */
-
-#define MASK_DEBUG_ARG 0x10000000 /* debug argument handling */
-#define MASK_DEBUG_STACK 0x20000000 /* debug stack allocations */
-#define MASK_DEBUG_ADDR 0x40000000 /* debug GO_IF_LEGITIMATE_ADDRESS */
-
-#define TARGET_NO_COND_MOVE (target_flags & MASK_NO_COND_MOVE)
-#define TARGET_DEBUG_ARG (target_flags & MASK_DEBUG_ARG)
-#define TARGET_DEBUG_STACK (target_flags & MASK_DEBUG_STACK)
-#define TARGET_DEBUG_ADDR (target_flags & MASK_DEBUG_ADDR)
-
-#define TARGET_COND_MOVE (! TARGET_NO_COND_MOVE)
-
-/* Default switches used. */
-#ifndef TARGET_DEFAULT
-#define TARGET_DEFAULT 0
-#endif
-
-#define TARGET_SWITCHES \
-{ \
- { "cond-move", -MASK_NO_COND_MOVE, \
- N_("Enable use of conditional move instructions") }, \
- \
- { "no-cond-move", MASK_NO_COND_MOVE, \
- N_("Disable use of conditional move instructions") }, \
- \
- { "debug-arg", MASK_DEBUG_ARG, \
- N_("Debug argument support in compiler") }, \
- \
- { "debug-stack", MASK_DEBUG_STACK, \
- N_("Debug stack support in compiler") }, \
- \
- { "debug-addr", MASK_DEBUG_ADDR, \
- N_("Debug memory address support in compiler") }, \
- \
- { "asm-optimize", 0, \
- N_("Make adjacent short instructions parallel if possible") }, \
- \
- { "no-asm-optimize", 0, \
- N_("Do not make adjacent short instructions parallel") }, \
- \
- { "extmem", 0, \
- N_("Link programs/data to be in external memory by default") }, \
- \
- { "extmemory", 0, \
- N_("Link programs/data to be in external memory by default") }, \
- \
- { "onchip", 0, \
- N_("Link programs/data to be in onchip memory by default") }, \
- \
- { "", TARGET_DEFAULT, "" }, \
-}
-
-#define TARGET_OPTIONS \
-{ \
- {"branch-cost=", &d30v_branch_cost_string, \
- N_("Change the branch costs within the compiler") }, \
- \
- {"cond-exec=", &d30v_cond_exec_string, \
- N_("Change the threshold for conversion to conditional execution") }, \
-}
-
-#define TARGET_VERSION fprintf (stderr, " d30v")
-
-#define OVERRIDE_OPTIONS override_options ()
-
-#define CAN_DEBUG_WITHOUT_FP
-
-\f
-/* Storage Layout */
-
-#define BITS_BIG_ENDIAN 1
-
-#define BYTES_BIG_ENDIAN 1
-
-#define WORDS_BIG_ENDIAN 1
-
-#define BITS_PER_UNIT 8
-
-#define BITS_PER_WORD 32
-
-#define UNITS_PER_WORD 4
-
-#define POINTER_SIZE 32
-
-#define PROMOTE_MODE(MODE,UNSIGNEDP,TYPE) \
-do { \
- if (GET_MODE_CLASS (MODE) == MODE_INT \
- && GET_MODE_SIZE (MODE) < 4) \
- (MODE) = SImode; \
-} while (0)
-
-#define PARM_BOUNDARY 32
-
-#define STACK_BOUNDARY 64
-
-#define FUNCTION_BOUNDARY 64
-
-#define BIGGEST_ALIGNMENT 64
-
-/* Defined in svr4.h. */
-/* #define MAX_OFILE_ALIGNMENT */
-
-#define DATA_ALIGNMENT(TYPE, ALIGN) \
- (TREE_CODE (TYPE) == ARRAY_TYPE \
- && TYPE_MODE (TREE_TYPE (TYPE)) == QImode \
- && (ALIGN) < BITS_PER_WORD ? BITS_PER_WORD : (ALIGN))
-
-#define CONSTANT_ALIGNMENT(EXP, ALIGN) \
- (TREE_CODE (EXP) == STRING_CST \
- && (ALIGN) < BITS_PER_WORD ? BITS_PER_WORD : (ALIGN))
-
-#define STRICT_ALIGNMENT 1
-
-/* Defined in svr4.h. */
-
-#define PCC_BITFIELD_TYPE_MATTERS 1
-
-#define TARGET_FLOAT_FORMAT IEEE_FLOAT_FORMAT
-
-\f
-/* Layout of Source Language Data Types */
-
-#define INT_TYPE_SIZE 32
-
-#define SHORT_TYPE_SIZE 16
-
-#define LONG_TYPE_SIZE 32
-
-#define LONG_LONG_TYPE_SIZE 64
-
-#define CHAR_TYPE_SIZE 8
-
-#define FLOAT_TYPE_SIZE 32
-
-#define DOUBLE_TYPE_SIZE 64
-
-#define LONG_DOUBLE_TYPE_SIZE 64
-
-#define DEFAULT_SIGNED_CHAR 1
-
-/* Defined in svr4.h. */
-/* #define SIZE_TYPE */
-
-/* Defined in svr4.h. */
-/* #define PTRDIFF_TYPE */
-
-/* Defined in svr4.h. */
-/* #define WCHAR_TYPE */
-
-/* Defined in svr4.h. */
-/* #define WCHAR_TYPE_SIZE */
-
-\f
-/* D30V register layout. */
-
-/* Return true if a value is inside a range */
-#define IN_RANGE_P(VALUE, LOW, HIGH) \
- (((unsigned)((VALUE) - (LOW))) <= ((unsigned)((HIGH) - (LOW))))
-
-/* General purpose registers. */
-#define GPR_FIRST 0 /* First gpr */
-#define GPR_LAST (GPR_FIRST + 63) /* Last gpr */
-#define GPR_R0 GPR_FIRST /* R0, constant 0 */
-#define GPR_ARG_FIRST (GPR_FIRST + 2) /* R2, first argument reg */
-#define GPR_ARG_LAST (GPR_FIRST + 17) /* R17, last argument reg */
-#define GPR_RET_VALUE GPR_ARG_FIRST /* R2, function return reg */
-#define GPR_ATMP_FIRST (GPR_FIRST + 20) /* R20, tmp to save accs */
-#define GPR_ATMP_LAST (GPR_FIRST + 21) /* R21, tmp to save accs */
-#define GPR_STACK_TMP (GPR_FIRST + 22) /* R22, tmp for saving stack */
-#define GPR_RES_FIRST (GPR_FIRST + 32) /* R32, first reserved reg */
-#define GPR_RES_LAST (GPR_FIRST + 35) /* R35, last reserved reg */
-#define GPR_FP (GPR_FIRST + 61) /* Frame pointer */
-#define GPR_LINK (GPR_FIRST + 62) /* Return address register */
-#define GPR_SP (GPR_FIRST + 63) /* Stack pointer */
-
-/* Argument register that is eliminated in favor of the frame and/or stack
- pointer. Also add register to point to where the return address is
- stored. */
-#define SPECIAL_REG_FIRST (GPR_LAST + 1)
-#define SPECIAL_REG_LAST (SPECIAL_REG_FIRST)
-#define ARG_POINTER_REGNUM (SPECIAL_REG_FIRST + 0)
-#define SPECIAL_REG_P(R) ((R) == SPECIAL_REG_FIRST)
-
-#define GPR_OR_SPECIAL_REG_P(R) IN_RANGE_P (R, GPR_FIRST, SPECIAL_REG_LAST)
-#define GPR_P(R) IN_RANGE_P (R, GPR_FIRST, GPR_LAST)
-#define GPR_OR_PSEUDO_P(R) (GPR_OR_SPECIAL_REG_P (R) \
- || (R) >= FIRST_PSEUDO_REGISTER)
-
-/* Flag bits. */
-#define FLAG_FIRST (SPECIAL_REG_LAST + 1) /* First flag */
-#define FLAG_LAST (FLAG_FIRST + 7) /* Last flag */
-#define FLAG_F0 (FLAG_FIRST) /* F0, used in prediction */
-#define FLAG_F1 (FLAG_FIRST + 1) /* F1, used in prediction */
-#define FLAG_F2 (FLAG_FIRST + 2) /* F2, general flag */
-#define FLAG_F3 (FLAG_FIRST + 3) /* F3, general flag */
-#define FLAG_SAT (FLAG_FIRST + 4) /* F4, saturation flag */
-#define FLAG_OVERFLOW (FLAG_FIRST + 5) /* F5, overflow flag */
-#define FLAG_ACC_OVER (FLAG_FIRST + 6) /* F6, accumulated overflow */
-#define FLAG_CARRY (FLAG_FIRST + 7) /* F7, carry/borrow flag */
-#define FLAG_BORROW FLAG_CARRY
-
-#define FLAG_P(R) IN_RANGE_P (R, FLAG_FIRST, FLAG_LAST)
-#define FLAG_OR_PSEUDO_P(R) (FLAG_P (R) || (R) >= FIRST_PSEUDO_REGISTER)
-
-#define BR_FLAG_P(R) IN_RANGE_P (R, FLAG_F0, FLAG_F1)
-#define BR_FLAG_OR_PSEUDO_P(R) (BR_FLAG_P (R) || (R) >= FIRST_PSEUDO_REGISTER)
-
-/* Accumulators */
-#define ACCUM_FIRST (FLAG_LAST + 1) /* First accumulator */
-#define ACCUM_A0 ACCUM_FIRST /* Register A0 */
-#define ACCUM_A1 (ACCUM_FIRST + 1) /* Register A1 */
-#define ACCUM_LAST (ACCUM_FIRST + 1) /* Last accumulator */
-
-#define ACCUM_P(R) IN_RANGE_P (R, ACCUM_FIRST, ACCUM_LAST)
-#define ACCUM_OR_PSEUDO_P(R) (ACCUM_P (R) || (R) >= FIRST_PSEUDO_REGISTER)
-
-/* Special registers. Note, we only define the registers that can actually
- be used. */
-#define CR_FIRST (ACCUM_LAST + 1) /* First CR */
-#define CR_LAST (CR_FIRST + 14) /* Last CR */
-#define CR_PSW (CR_FIRST + 0) /* CR0, Program status word */
-#define CR_BPSW (CR_FIRST + 1) /* CR1, Backup PSW */
-#define CR_PC (CR_FIRST + 2) /* CR2, Program counter */
-#define CR_BPC (CR_FIRST + 3) /* CR3, Backup PC */
-#define CR_DPSW (CR_FIRST + 4) /* CR4, Debug PSW */
-#define CR_DPC (CR_FIRST + 5) /* CR5, Debug PC */
-#define CR_RPT_C (CR_FIRST + 6) /* CR7, loop count register */
-#define CR_RPT_S (CR_FIRST + 7) /* CR8, loop start address */
-#define CR_RPT_E (CR_FIRST + 8) /* CR9, loop end address */
-#define CR_MOD_S (CR_FIRST + 9) /* CR10, modulo address start*/
-#define CR_MOD_E (CR_FIRST + 10) /* CR11, modulo address */
-#define CR_IBA (CR_FIRST + 11) /* CR14, Interrupt break addr */
-#define CR_EIT_VB (CR_FIRST + 12) /* CR15, EIT vector address */
-#define CR_INT_S (CR_FIRST + 13) /* CR16, Interrupt status */
-#define CR_INT_M (CR_FIRST + 14) /* CR17, Interrupt mask */
-
-#define CR_P(R) IN_RANGE_P (R, CR_FIRST, CR_LAST)
-#define CR_OR_PSEUDO_P(R) (CR_P (R) || (R) >= FIRST_PSEUDO_REGISTER)
-
-\f
-/* Register Basics */
-
-/* Number of hardware registers known to the compiler. They receive numbers 0
- through `FIRST_PSEUDO_REGISTER-1'; thus, the first pseudo register's number
- really is assigned the number `FIRST_PSEUDO_REGISTER'. */
-#define FIRST_PSEUDO_REGISTER (CR_LAST + 1)
-
-/* An initializer that says which registers are used for fixed purposes all
- throughout the compiled code and are therefore not available for general
- allocation. These would include the stack pointer, the frame pointer
- (except on machines where that can be used as a general register when no
- frame pointer is needed), the program counter on machines where that is
- considered one of the addressable registers, and any other numbered register
- with a standard use.
-
- This information is expressed as a sequence of numbers, separated by commas
- and surrounded by braces. The Nth number is 1 if register N is fixed, 0
- otherwise.
-
- The table initialized from this macro, and the table initialized by the
- following one, may be overridden at run time either automatically, by the
- actions of the macro `CONDITIONAL_REGISTER_USAGE', or by the user with the
- command options `-ffixed-REG', `-fcall-used-REG' and `-fcall-saved-REG'. */
-#define FIXED_REGISTERS \
-{ \
- 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* R0 - R15 */ \
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, /* R16 - R31 */ \
- 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* R32 - R47 */ \
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, /* R48 - R63 */ \
- 1, /* ARG ptr */ \
- 0, 0, 0, 0, 1, 1, 1, 1, /* F0 - F7 */ \
- 0, 0, /* A0 - A1 */ \
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* CRs */ \
-}
-
-/* Like `FIXED_REGISTERS' but has 1 for each register that is clobbered (in
- general) by function calls as well as for fixed registers. This macro
- therefore identifies the registers that are not available for general
- allocation of values that must live across function calls.
-
- If a register has 0 in `CALL_USED_REGISTERS', the compiler automatically
- saves it on function entry and restores it on function exit, if the register
- is used within the function. */
-#define CALL_USED_REGISTERS \
-{ \
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* R0 - R15 */ \
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* R16 - R31 */ \
- 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* R32 - R47 */ \
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, /* R48 - R63 */ \
- 1, /* ARG ptr */ \
- 1, 1, 1, 1, 1, 1, 1, 1, /* F0 - F7 */ \
- 1, 0, /* A0 - A1 */ \
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* CRs */ \
-}
-
-/* Zero or more C statements that may conditionally modify two variables
- `fixed_regs' and `call_used_regs' (both of type `char []') after they have
- been initialized from the two preceding macros.
-
- This is necessary in case the fixed or call-clobbered registers depend on
- target flags.
-
- You need not define this macro if it has no work to do.
-
- If the usage of an entire class of registers depends on the target flags,
- you may indicate this to GCC by using this macro to modify `fixed_regs' and
- `call_used_regs' to 1 for each of the registers in the classes which should
- not be used by GCC. Also define the macro `REG_CLASS_FROM_LETTER' to return
- `NO_REGS' if it is called with a letter for a class that shouldn't be used.
-
- (However, if this class is not included in `GENERAL_REGS' and all of the
- insn patterns whose constraints permit this class are controlled by target
- switches, then GCC will automatically avoid using these registers when the
- target switches are opposed to them.) */
-/* #define CONDITIONAL_REGISTER_USAGE */
-
-/* If this macro is defined and has a nonzero value, it means that `setjmp' and
- related functions fail to save the registers, or that `longjmp' fails to
- restore them. To compensate, the compiler avoids putting variables in
- registers in functions that use `setjmp'. */
-/* #define NON_SAVING_SETJMP */
-
-/* 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 the register number OUT as seen by the calling function.
- Return OUT if register number OUT is not an outbound register. */
-/* #define INCOMING_REGNO(OUT) */
-
-/* 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 the register number IN as seen by the called function.
- Return IN if register number IN is not an inbound register. */
-/* #define OUTGOING_REGNO(IN) */
-
-\f
-/* Order of allocation of registers */
-
-/* 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).
-
- If this macro is not defined, registers are used lowest numbered first (all
- else being equal).
-
- One use of this macro is on machines where the highest numbered registers
- must always be saved and the save-multiple-registers instruction supports
- only sequences of consecutive registers. On such machines, define
- `REG_ALLOC_ORDER' to be an initializer that lists the highest numbered
- allocatable register first. */
-
-#define REG_ALLOC_ORDER \
-{ \
- /* volatile registers */ \
- GPR_FIRST + 2, GPR_FIRST + 3, GPR_FIRST + 4, GPR_FIRST + 5, \
- GPR_FIRST + 6, GPR_FIRST + 7, GPR_FIRST + 8, GPR_FIRST + 9, \
- GPR_FIRST + 10, GPR_FIRST + 11, GPR_FIRST + 12, GPR_FIRST + 13, \
- GPR_FIRST + 14, GPR_FIRST + 15, GPR_FIRST + 16, GPR_FIRST + 17, \
- GPR_FIRST + 18, GPR_FIRST + 19, GPR_FIRST + 20, GPR_FIRST + 21, \
- GPR_FIRST + 22, GPR_FIRST + 23, GPR_FIRST + 24, GPR_FIRST + 25, \
- GPR_FIRST + 1, \
- \
- /* saved registers */ \
- GPR_FIRST + 34, GPR_FIRST + 35, GPR_FIRST + 36, GPR_FIRST + 37, \
- GPR_FIRST + 38, GPR_FIRST + 39, GPR_FIRST + 40, GPR_FIRST + 41, \
- GPR_FIRST + 42, GPR_FIRST + 43, GPR_FIRST + 44, GPR_FIRST + 45, \
- GPR_FIRST + 46, GPR_FIRST + 47, GPR_FIRST + 48, GPR_FIRST + 49, \
- GPR_FIRST + 50, GPR_FIRST + 51, GPR_FIRST + 52, GPR_FIRST + 53, \
- GPR_FIRST + 54, GPR_FIRST + 55, GPR_FIRST + 56, GPR_FIRST + 57, \
- GPR_FIRST + 58, GPR_FIRST + 59, GPR_FIRST + 60, GPR_FIRST + 61, \
- GPR_FIRST + 62, \
- \
- /* flags */ \
- FLAG_F2, FLAG_F3, FLAG_F0, FLAG_F1, \
- FLAG_SAT, FLAG_OVERFLOW, FLAG_ACC_OVER, FLAG_CARRY, \
- \
- /* accumultors */ \
- ACCUM_FIRST + 0, ACCUM_FIRST + 1, \
- \
- /* fixed registers */ \
- GPR_FIRST + 0, GPR_FIRST + 26, GPR_FIRST + 27, GPR_FIRST + 28, \
- GPR_FIRST + 29, GPR_FIRST + 30, GPR_FIRST + 31, GPR_FIRST + 32, \
- GPR_FIRST + 33, GPR_FIRST + 63, \
- CR_PSW, CR_BPSW, CR_PC, CR_BPC, \
- CR_DPSW, CR_DPC, CR_RPT_C, CR_RPT_S, \
- CR_RPT_E, CR_MOD_S, CR_MOD_E, CR_IBA, \
- CR_EIT_VB, CR_INT_S, CR_INT_M, \
- ARG_POINTER_REGNUM, \
-}
-
-/* A C statement (sans semicolon) to choose the order in which to allocate hard
- registers for pseudo-registers local to a basic block.
-
- Store the desired register order in the array `reg_alloc_order'. Element 0
- should be the register to allocate first; element 1, the next register; and
- so on.
-
- The macro body should not assume anything about the contents of
- `reg_alloc_order' before execution of the macro.
-
- On most machines, it is not necessary to define this macro. */
-/* #define ORDER_REGS_FOR_LOCAL_ALLOC */
-
-\f
-/* How Values Fit in Registers */
-
-/* A C expression for the number of consecutive hard registers, starting at
- register number REGNO, required to hold a value of mode MODE.
-
- On a machine where all registers are exactly one word, a suitable definition
- of this macro is
-
- #define HARD_REGNO_NREGS(REGNO, MODE) \
- ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) \
- / UNITS_PER_WORD)) */
-
-#define HARD_REGNO_NREGS(REGNO, MODE) \
-(ACCUM_P (REGNO) ? ((GET_MODE_SIZE (MODE) + 2*UNITS_PER_WORD - 1) \
- / (2*UNITS_PER_WORD)) \
- : ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) \
- / UNITS_PER_WORD))
-
-/* A C expression that is nonzero if it is permissible to store a value of mode
- MODE in hard register number REGNO (or in several registers starting with
- that one). For a machine where all registers are equivalent, a suitable
- definition is
-
- #define HARD_REGNO_MODE_OK(REGNO, MODE) 1
-
- It is not necessary for this macro to check for the numbers of fixed
- registers, because the allocation mechanism considers them to be always
- occupied.
-
- On some machines, double-precision values must be kept in even/odd register
- pairs. The way to implement that is to define this macro to reject odd
- register numbers for such modes.
-
- The minimum requirement for a mode to be OK in a register is that the
- `movMODE' instruction pattern support moves between the register and any
- other hard register for which the mode is OK; and that moving a value into
- the register and back out not alter it.
-
- Since the same instruction used to move `SImode' will work for all narrower
- integer modes, it is not necessary on any machine for `HARD_REGNO_MODE_OK'
- to distinguish between these modes, provided you define patterns `movhi',
- etc., to take advantage of this. This is useful because of the interaction
- between `HARD_REGNO_MODE_OK' and `MODES_TIEABLE_P'; it is very desirable for
- all integer modes to be tieable.
-
- Many machines have special registers for floating point arithmetic. Often
- people assume that floating point machine modes are allowed only in floating
- point registers. This is not true. Any registers that can hold integers
- can safely *hold* a floating point machine mode, whether or not floating
- arithmetic can be done on it in those registers. Integer move instructions
- can be used to move the values.
-
- On some machines, though, the converse is true: fixed-point machine modes
- may not go in floating registers. This is true if the floating registers
- normalize any value stored in them, because storing a non-floating value
- there would garble it. In this case, `HARD_REGNO_MODE_OK' should reject
- fixed-point machine modes in floating registers. But if the floating
- registers do not automatically normalize, if you can store any bit pattern
- in one and retrieve it unchanged without a trap, then any machine mode may
- go in a floating register, so you can define this macro to say so.
-
- The primary significance of special floating registers is rather that they
- are the registers acceptable in floating point arithmetic instructions.
- However, this is of no concern to `HARD_REGNO_MODE_OK'. You handle it by
- writing the proper constraints for those instructions.
-
- On some machines, the floating registers are especially slow to access, so
- that it is better to store a value in a stack frame than in such a register
- if floating point arithmetic is not being done. As long as the floating
- registers are not in class `GENERAL_REGS', they will not be used unless some
- pattern's constraint asks for one. */
-
-extern unsigned char hard_regno_mode_ok[][FIRST_PSEUDO_REGISTER];
-#define HARD_REGNO_MODE_OK(REGNO, MODE) hard_regno_mode_ok[ (int)MODE ][ REGNO ]
-
-/* 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. */
-
-extern unsigned char modes_tieable_p[];
-#define MODES_TIEABLE_P(MODE1, MODE2) \
- modes_tieable_p[ (((int)(MODE1)) * (NUM_MACHINE_MODES)) + (int)(MODE2) ]
-
-/* Define this macro if the compiler should avoid copies to/from CCmode
- registers. You should only define this macro if support fo copying to/from
- CCmode is incomplete. */
-
-/* On the D30V, copying to/from CCmode is complete, but since there are only
- two CC registers usable for conditional tests, this helps gcse not compound
- the reload problem. */
-#define AVOID_CCMODE_COPIES
-
-\f
-/* Handling Leaf Functions */
-
-/* A C initializer for a vector, indexed by hard register number, which
- contains 1 for a register that is allowable in a candidate for leaf function
- treatment.
-
- If leaf function treatment involves renumbering the registers, then the
- registers marked here should be the ones before renumbering--those that GNU
- CC would ordinarily allocate. The registers which will actually be used in
- the assembler code, after renumbering, should not be marked with 1 in this
- vector.
-
- Define this macro only if the target machine offers a way to optimize the
- treatment of leaf functions. */
-/* #define LEAF_REGISTERS */
-
-/* A C expression whose value is the register number to which REGNO should be
- renumbered, when a function is treated as a leaf function.
-
- If REGNO is a register number which should not appear in a leaf function
- before renumbering, then the expression should yield -1, which will cause
- the compiler to abort.
-
- Define this macro only if the target machine offers a way to optimize the
- treatment of leaf functions, and registers need to be renumbered to do this. */
-/* #define LEAF_REG_REMAP(REGNO) */
-
-\f
-/* Registers That Form a Stack. */
-
-/* Define this if the machine has any stack-like registers. */
-/* #define STACK_REGS */
-
-/* The number of the first stack-like register. This one is the top
- of the stack. */
-/* #define FIRST_STACK_REG */
-
-/* The number of the last stack-like register. This one is the
- bottom of the stack. */
-/* #define LAST_STACK_REG */
-
-\f
-/* Register Classes */
-
-/* An enumeral type that must be defined with all the register class names as
- enumeral values. `NO_REGS' must be first. `ALL_REGS' must be the last
- register class, followed by one more enumeral value, `LIM_REG_CLASSES',
- which is not a register class but rather tells how many classes there are.
-
- Each register class has a number, which is the value of casting the class
- name to type `int'. The number serves as an index in many of the tables
- described below. */
-enum reg_class
-{
- NO_REGS,
- REPEAT_REGS,
- CR_REGS,
- ACCUM_REGS,
- OTHER_FLAG_REGS,
- F0_REGS,
- F1_REGS,
- BR_FLAG_REGS,
- FLAG_REGS,
- EVEN_REGS,
- GPR_REGS,
- ALL_REGS,
- LIM_REG_CLASSES
-};
-
-#define GENERAL_REGS GPR_REGS
-
-/* The number of distinct register classes, defined as follows:
-
- #define N_REG_CLASSES (int) LIM_REG_CLASSES */
-#define N_REG_CLASSES ((int) LIM_REG_CLASSES)
-
-/* An initializer containing the names of the register classes as C string
- constants. These names are used in writing some of the debugging dumps. */
-#define REG_CLASS_NAMES \
-{ \
- "NO_REGS", \
- "REPEAT_REGS", \
- "CR_REGS", \
- "ACCUM_REGS", \
- "OTHER_FLAG_REGS", \
- "F0_REGS", \
- "F1_REGS", \
- "BR_FLAG_REGS", \
- "FLAG_REGS", \
- "EVEN_REGS", \
- "GPR_REGS", \
- "ALL_REGS", \
-}
-
-/* Create mask bits for 3rd word of REG_CLASS_CONTENTS */
-#define MASK_WORD3(REG) ((long)1 << ((REG) - 64))
-
-#define NO_MASK 0
-#define REPEAT_MASK MASK_WORD3 (CR_RPT_C)
-#define CR_MASK (MASK_WORD3 (CR_PSW) | MASK_WORD3 (CR_BPSW) \
- | MASK_WORD3 (CR_PC) | MASK_WORD3 (CR_BPC) \
- | MASK_WORD3 (CR_DPSW) | MASK_WORD3 (CR_DPC) \
- | MASK_WORD3 (CR_RPT_C) | MASK_WORD3 (CR_RPT_S) \
- | MASK_WORD3 (CR_RPT_E) | MASK_WORD3 (CR_MOD_S) \
- | MASK_WORD3 (CR_MOD_E) | MASK_WORD3 (CR_IBA) \
- | MASK_WORD3 (CR_EIT_VB) | MASK_WORD3 (CR_INT_S) \
- | MASK_WORD3 (CR_INT_M))
-
-#define ACCUM_MASK (MASK_WORD3 (ACCUM_A0) | MASK_WORD3 (ACCUM_A1))
-#define OTHER_FLAG_MASK (MASK_WORD3 (FLAG_F2) | MASK_WORD3 (FLAG_F3) \
- | MASK_WORD3 (FLAG_SAT) | MASK_WORD3 (FLAG_OVERFLOW) \
- | MASK_WORD3 (FLAG_ACC_OVER) | MASK_WORD3 (FLAG_CARRY))
-
-#define F0_MASK MASK_WORD3 (FLAG_F0)
-#define F1_MASK MASK_WORD3 (FLAG_F1)
-#define BR_FLAG_MASK (F0_MASK | F1_MASK)
-#define FLAG_MASK (BR_FLAG_MASK | OTHER_FLAG_MASK)
-#define SPECIAL_MASK MASK_WORD3 (ARG_POINTER_REGNUM)
-
-#define ALL_MASK (CR_MASK | ACCUM_MASK | FLAG_MASK | SPECIAL_MASK)
-
-/* An initializer containing the contents of the register classes, as integers
- which are bit masks. The Nth integer specifies the contents of class N.
- The way the integer MASK is interpreted is that register R is in the class
- if `MASK & (1 << R)' is 1.
-
- When the machine has more than 32 registers, an integer does not suffice.
- Then the integers are replaced by sub-initializers, braced groupings
- containing several integers. Each sub-initializer must be suitable as an
- initializer for the type `HARD_REG_SET' which is defined in
- `hard-reg-set.h'. */
-#define REG_CLASS_CONTENTS \
-{ \
- { 0x00000000, 0x00000000, NO_MASK }, /* NO_REGS */ \
- { 0x00000000, 0x00000000, REPEAT_MASK }, /* REPEAT_REGS */ \
- { 0x00000000, 0x00000000, CR_MASK }, /* CR_REGS */ \
- { 0x00000000, 0x00000000, ACCUM_MASK }, /* ACCUM_REGS */ \
- { 0x00000000, 0x00000000, OTHER_FLAG_MASK }, /* OTHER_FLAG_REGS */ \
- { 0x00000000, 0x00000000, F0_MASK }, /* F0_REGS */ \
- { 0x00000000, 0x00000000, F1_MASK }, /* F1_REGS */ \
- { 0x00000000, 0x00000000, BR_FLAG_MASK }, /* BR_FLAG_REGS */ \
- { 0x00000000, 0x00000000, FLAG_MASK }, /* FLAG_REGS */ \
- { 0xfffffffc, 0x3fffffff, NO_MASK }, /* EVEN_REGS */ \
- { 0xffffffff, 0xffffffff, SPECIAL_MASK }, /* GPR_REGS */ \
- { 0xffffffff, 0xffffffff, ALL_MASK }, /* ALL_REGS */ \
-}
-
-/* A C expression whose value is a register class containing hard register
- REGNO. In general there is more than one such class; choose a class which
- is "minimal", meaning that no smaller class also contains the register. */
-
-extern enum reg_class regno_reg_class[FIRST_PSEUDO_REGISTER];
-#define REGNO_REG_CLASS(REGNO) regno_reg_class[ (REGNO) ]
-
-/* A macro whose definition is the name of the class to which a valid base
- register must belong. A base register is one used in an address which is
- the register value plus a displacement. */
-#define BASE_REG_CLASS GPR_REGS
-
-/* A macro whose definition is the name of the class to which a valid index
- register must belong. An index register is one used in an address where its
- value is either multiplied by a scale factor or added to another register
- (as well as added to a displacement). */
-#define INDEX_REG_CLASS GPR_REGS
-
-/* A C expression which defines the machine-dependent operand constraint
- letters for register classes. If CHAR is such a letter, the value should be
- the register class corresponding to it. Otherwise, the value should be
- `NO_REGS'. The register letter `r', corresponding to class `GENERAL_REGS',
- will not be passed to this macro; you do not need to handle it.
-
- The following letters are unavailable, due to being used as
- constraints:
- '0'..'9'
- '<', '>'
- 'E', 'F', 'G', 'H'
- 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P'
- 'Q', 'R', 'S', 'T', 'U'
- 'V', 'X'
- 'g', 'i', 'm', 'n', 'o', 'p', 'r', 's' */
-
-extern enum reg_class reg_class_from_letter[256];
-#define REG_CLASS_FROM_LETTER(CHAR) reg_class_from_letter[(unsigned char)(CHAR)]
-
-/* A C expression which is nonzero if register number NUM is suitable for use
- as a base register in operand addresses. It may be either a suitable hard
- register or a pseudo register that has been allocated such a hard register. */
-
-#define REGNO_OK_FOR_BASE_P(NUM) \
-((NUM) < FIRST_PSEUDO_REGISTER \
- ? GPR_P (NUM) \
- : (reg_renumber[NUM] >= 0 && GPR_P (reg_renumber[NUM])))
-
-
-/* A C expression which is nonzero if register number NUM is suitable for use
- as an index register in operand addresses. It may be either a suitable hard
- register or a pseudo register that has been allocated such a hard register.
-
- The difference between an index register and a base register is that the
- index register may be scaled. If an address involves the sum of two
- registers, neither one of them scaled, then either one may be labeled the
- "base" and the other the "index"; but whichever labeling is used must fit
- the machine's constraints of which registers may serve in each capacity.
- The compiler will try both labelings, looking for one that is valid, and
- will reload one or both registers only if neither labeling works. */
-
-#define REGNO_OK_FOR_INDEX_P(NUM) \
-((NUM) < FIRST_PSEUDO_REGISTER \
- ? GPR_P (NUM) \
- : (reg_renumber[NUM] >= 0 && GPR_P (reg_renumber[NUM])))
-
-/* A C expression that places additional restrictions on the register class to
- use when it is necessary to copy value X into a register in class CLASS.
- The value is a register class; perhaps CLASS, or perhaps another, smaller
- class. On many machines, the following definition is safe:
-
- #define PREFERRED_RELOAD_CLASS(X,CLASS) CLASS
-
- Sometimes returning a more restrictive class makes better code. For
- example, on the 68000, when X is an integer constant that is in range for a
- `moveq' instruction, the value of this macro is always `DATA_REGS' as long
- as CLASS includes the data registers. Requiring a data register guarantees
- that a `moveq' will be used.
-
- If X is a `const_double', by returning `NO_REGS' you can force X into a
- memory constant. This is useful on certain machines where immediate
- floating values cannot be loaded into certain kinds of registers. */
-#define PREFERRED_RELOAD_CLASS(X, CLASS) CLASS
-
-/* Like `PREFERRED_RELOAD_CLASS', but for output reloads instead of input
- reloads. If you don't define this macro, the default is to use CLASS,
- unchanged. */
-/* #define PREFERRED_OUTPUT_RELOAD_CLASS(X, CLASS) */
-
-/* A C expression that places additional restrictions on the register class to
- use when it is necessary to be able to hold a value of mode MODE in a reload
- register for which class CLASS would ordinarily be used.
-
- Unlike `PREFERRED_RELOAD_CLASS', this macro should be used when there are
- certain modes that simply can't go in certain reload classes.
-
- The value is a register class; perhaps CLASS, or perhaps another, smaller
- class.
-
- Don't define this macro unless the target machine has limitations which
- require the macro to do something nontrivial. */
-/* #define LIMIT_RELOAD_CLASS(MODE, CLASS) */
-
-/* Many machines have some registers that cannot be copied directly to or from
- memory or even from other types of registers. An example is the `MQ'
- register, which on most machines, can only be copied to or from general
- registers, but not memory. Some machines allow copying all registers to and
- from memory, but require a scratch register for stores to some memory
- locations (e.g., those with symbolic address on the RT, and those with
- certain symbolic address on the Sparc when compiling PIC). In some cases,
- both an intermediate and a scratch register are required.
-
- You should define these macros to indicate to the reload phase that it may
- need to allocate at least one register for a reload in addition to the
- register to contain the data. Specifically, if copying X to a register
- CLASS in MODE requires an intermediate register, you should define
- `SECONDARY_INPUT_RELOAD_CLASS' to return the largest register class all of
- whose registers can be used as intermediate registers or scratch registers.
-
- If copying a register CLASS in MODE to X requires an intermediate or scratch
- register, `SECONDARY_OUTPUT_RELOAD_CLASS' should be defined to return the
- largest register class required. If the requirements for input and output
- reloads are the same, the macro `SECONDARY_RELOAD_CLASS' should be used
- instead of defining both macros identically.
-
- The values returned by these macros are often `GENERAL_REGS'. Return
- `NO_REGS' if no spare register is needed; i.e., if X can be directly copied
- to or from a register of CLASS in MODE without requiring a scratch register.
- Do not define this macro if it would always return `NO_REGS'.
-
- If a scratch register is required (either with or without an intermediate
- register), you should define patterns for `reload_inM' or `reload_outM', as
- required (*note Standard Names::.. These patterns, which will normally be
- implemented with a `define_expand', should be similar to the `movM'
- patterns, except that operand 2 is the scratch register.
-
- Define constraints for the reload register and scratch register that contain
- a single register class. If the original reload register (whose class is
- CLASS) can meet the constraint given in the pattern, the value returned by
- these macros is used for the class of the scratch register. Otherwise, two
- additional reload registers are required. Their classes are obtained from
- the constraints in the insn pattern.
-
- X might be a pseudo-register or a `subreg' of a pseudo-register, which could
- either be in a hard register or in memory. Use `true_regnum' to find out;
- it will return -1 if the pseudo is in memory and the hard register number if
- it is in a register.
-
- These macros should not be used in the case where a particular class of
- registers can only be copied to memory and not to another class of
- registers. In that case, secondary reload registers are not needed and
- would not be helpful. Instead, a stack location must be used to perform the
- copy and the `movM' pattern should use memory as an intermediate storage.
- This case often occurs between floating-point and general registers. */
-
-#define SECONDARY_RELOAD_CLASS(CLASS, MODE, X) \
-((CLASS) == GPR_REGS ? NO_REGS \
- : (CLASS) == EVEN_REGS ? NO_REGS \
- : (CLASS) == ACCUM_REGS ? EVEN_REGS \
- : GPR_REGS)
-
-/* #define SECONDARY_INPUT_RELOAD_CLASS(CLASS, MODE, X) */
-/* #define SECONDARY_OUTPUT_RELOAD_CLASS(CLASS, MODE, X) */
-
-/* Certain machines have the property that some registers cannot be copied to
- some other registers without using memory. Define this macro on those
- machines to be a C expression that is non-zero if objects of mode M in
- registers of CLASS1 can only be copied to registers of class CLASS2 by
- storing a register of CLASS1 into memory and loading that memory location
- into a register of CLASS2.
-
- Do not define this macro if its value would always be zero. */
-/* #define SECONDARY_MEMORY_NEEDED(CLASS1, CLASS2, M) */
-
-/* Normally when `SECONDARY_MEMORY_NEEDED' is defined, the compiler allocates a
- stack slot for a memory location needed for register copies. If this macro
- is defined, the compiler instead uses the memory location defined by this
- macro.
-
- Do not define this macro if you do not define
- `SECONDARY_MEMORY_NEEDED'. */
-/* #define SECONDARY_MEMORY_NEEDED_RTX(MODE) */
-
-/* When the compiler needs a secondary memory location to copy between two
- registers of mode MODE, it normally allocates sufficient memory to hold a
- quantity of `BITS_PER_WORD' bits and performs the store and load operations
- in a mode that many bits wide and whose class is the same as that of MODE.
-
- This is right thing to do on most machines because it ensures that all bits
- of the register are copied and prevents accesses to the registers in a
- narrower mode, which some machines prohibit for floating-point registers.
-
- However, this default behavior is not correct on some machines, such as the
- DEC Alpha, that store short integers in floating-point registers differently
- than in integer registers. On those machines, the default widening will not
- work correctly and you must define this macro to suppress that widening in
- some cases. See the file `alpha.h' for details.
-
- Do not define this macro if you do not define `SECONDARY_MEMORY_NEEDED' or
- if widening MODE to a mode that is `BITS_PER_WORD' bits wide is correct for
- your machine. */
-/* #define SECONDARY_MEMORY_NEEDED_MODE(MODE) */
-
-/* Normally the compiler avoids choosing registers that have been explicitly
- mentioned in the rtl as spill registers (these registers are normally those
- used to pass parameters and return values). However, some machines have so
- few registers of certain classes that there would not be enough registers to
- use as spill registers if this were done.
-
- Define `SMALL_REGISTER_CLASSES' to be an expression with a non-zero value on
- these machines. When this macro has a non-zero value, the compiler allows
- registers explicitly used in the rtl to be used as spill registers but
- avoids extending the lifetime of these registers.
-
- It is always safe to define this macro with a non-zero value, but if you
- unnecessarily define it, you will reduce the amount of optimizations that
- can be performed in some cases. If you do not define this macro with a
- non-zero value when it is required, the compiler will run out of spill
- registers and print a fatal error message. For most machines, you should
- not define this macro at all. */
-/* #define SMALL_REGISTER_CLASSES */
-
-/* A C expression whose value is nonzero if pseudos that have been assigned to
- registers of class CLASS would likely be spilled because registers of CLASS
- are needed for spill registers.
-
- The default value of this macro returns 1 if CLASS has exactly one register
- and zero otherwise. On most machines, this default should be used. Only
- define this macro to some other expression if pseudo allocated by
- `local-alloc.c' end up in memory because their hard registers were needed
- for spill registers. If this macro returns nonzero for those classes, those
- pseudos will only be allocated by `global.c', which knows how to reallocate
- the pseudo to another register. If there would not be another register
- available for reallocation, you should not change the definition of this
- macro since the only effect of such a definition would be to slow down
- register allocation. */
-#define CLASS_LIKELY_SPILLED_P(CLASS) \
- ((CLASS) != GPR_REGS && (CLASS) != EVEN_REGS)
-
-/* A C expression for the maximum number of consecutive registers of
- class CLASS needed to hold a value of mode MODE.
-
- This is closely related to the macro `HARD_REGNO_NREGS'. In fact, the value
- of the macro `CLASS_MAX_NREGS (CLASS, MODE)' should be the maximum value of
- `HARD_REGNO_NREGS (REGNO, MODE)' for all REGNO values in the class CLASS.
-
- This macro helps control the handling of multiple-word values in
- the reload pass. */
-
-#define CLASS_MAX_NREGS(CLASS, MODE) \
-(((CLASS) == ACCUM_REGS) \
- ? ((GET_MODE_SIZE (MODE) + 8 - 1) / 8) \
- : ((GET_MODE_SIZE (MODE) + 4 - 1) / 4))
-
-/* A C expression that defines the machine-dependent operand constraint letters
- (`I', `J', `K', .. 'P') that specify particular ranges of integer values.
- If C is one of those letters, the expression should check that VALUE, an
- integer, is in the appropriate range and return 1 if so, 0 otherwise. If C
- is not one of those letters, the value should be 0 regardless of VALUE. */
-#define CONST_OK_FOR_LETTER_P(VALUE, C) \
-((C) == 'I' ? IN_RANGE_P (VALUE, -32, 31) \
- : (C) == 'J' ? IN_RANGE_P (VALUE, 0, 31) \
- : (C) == 'K' ? IN_RANGE_P (exact_log2 (VALUE), 0, 31) \
- : (C) == 'L' ? IN_RANGE_P (exact_log2 (~ (VALUE)), 0, 31) \
- : (C) == 'M' ? ((VALUE) == 32) \
- : (C) == 'N' ? ((VALUE) == 1) \
- : (C) == 'O' ? ((VALUE) == 0) \
- : (C) == 'P' ? IN_RANGE_P (VALUE, 32, 63) \
- : FALSE)
-
-/* A C expression that defines the machine-dependent operand constraint letters
- (`G', `H') that specify particular ranges of `const_double' values.
-
- If C is one of those letters, the expression should check that VALUE, an RTX
- of code `const_double', is in the appropriate range and return 1 if so, 0
- otherwise. If C is not one of those letters, the value should be 0
- regardless of VALUE.
-
- `const_double' is used for all floating-point constants and for `DImode'
- fixed-point constants. A given letter can accept either or both kinds of
- values. It can use `GET_MODE' to distinguish between these kinds. */
-#define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) \
-((C) == 'G' ? (CONST_DOUBLE_LOW (VALUE) == 0 \
- && CONST_DOUBLE_HIGH (VALUE) == 0) \
- : (C) == 'H' ? FALSE \
- : FALSE)
-
-/* A C expression that defines the optional machine-dependent constraint
- letters (`Q', `R', `S', `T', `U') that can be used to segregate specific
- types of operands, usually memory references, for the target machine.
- Normally this macro will not be defined. If it is required for a particular
- 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.
-
- For example, on the ROMP, load instructions cannot have their output in r0
- if the memory reference contains a symbolic address. Constraint letter `Q'
- is defined as representing a memory address that does *not* contain a
- symbolic address. An alternative is specified with a `Q' constraint on the
- input and `r' on the output. The next alternative specifies `m' on the
- input and a register class that does not include r0 on the output. */
-
-#define EXTRA_CONSTRAINT(VALUE, C) \
-(((C) == 'Q') ? short_memory_operand ((VALUE), GET_MODE (VALUE)) \
- : ((C) == 'R') ? single_reg_memory_operand ((VALUE), GET_MODE (VALUE)) \
- : ((C) == 'S') ? const_addr_memory_operand ((VALUE), GET_MODE (VALUE)) \
- : ((C) == 'T') ? long_memory_operand ((VALUE), GET_MODE (VALUE)) \
- : ((C) == 'U') ? FALSE \
- : FALSE)
-
-\f
-/* Basic Stack Layout */
-
-/* Stack layout */
-
-/* Structure used to define the d30v stack */
-typedef struct d30v_stack {
- int varargs_p; /* whether this is a varargs function */
- int varargs_size; /* size to hold varargs args passed in regs */
- int vars_size; /* variable save area size */
- int parm_size; /* outgoing parameter size */
- int gpr_size; /* size of saved GPR registers */
- int accum_size; /* size of saved ACCUM registers */
- int total_size; /* total bytes allocated for stack */
- /* which registers are to be saved */
- int save_offset; /* offset from new sp to start saving vars at */
- int link_offset; /* offset r62 is saved at */
- int memrefs_varargs; /* # of 2 word memory references for varargs */
- int memrefs_2words; /* # of 2 word memory references */
- int memrefs_1word; /* # of 1 word memory references */
- /* 1 for ldw/stw ops; 2 for ld2w/st2w ops */
- unsigned char save_p[FIRST_PSEUDO_REGISTER];
-} d30v_stack_t;
-
-/* Define this macro if pushing a word onto the stack moves the stack pointer
- to a smaller address.
-
- When we say, "define this macro if ...," it means that the compiler checks
- this macro only with `#ifdef' so the precise definition used does not
- matter. */
-#define STACK_GROWS_DOWNWARD 1
-
-/* Define this macro if the addresses of local variable slots are at negative
- offsets from the frame pointer. */
-/* #define FRAME_GROWS_DOWNWARD */
-
-/* Define this macro if successive arguments to a function occupy decreasing
- addresses on the stack. */
-/* #define ARGS_GROW_DOWNWARD */
-
-/* Offset from the frame pointer to the first local variable slot to be
- allocated.
-
- If `FRAME_GROWS_DOWNWARD', find the next slot's offset by subtracting the
- first slot's length from `STARTING_FRAME_OFFSET'. Otherwise, it is found by
- adding the length of the first slot to the value `STARTING_FRAME_OFFSET'. */
-
-#define STARTING_FRAME_OFFSET \
- (D30V_ALIGN (current_function_outgoing_args_size, \
- (STACK_BOUNDARY / BITS_PER_UNIT)))
-
-/* Offset from the stack pointer register to the first location at which
- outgoing arguments are placed. If not specified, the default value of zero
- is used. This is the proper value for most machines.
-
- If `ARGS_GROW_DOWNWARD', this is the offset to the location above the first
- location at which outgoing arguments are placed. */
-/* #define STACK_POINTER_OFFSET */
-
-/* Offset from the argument pointer register to the first argument's address.
- On some machines it may depend on the data type of the function.
-
- If `ARGS_GROW_DOWNWARD', this is the offset to the location above the first
- argument's address. */
-#define FIRST_PARM_OFFSET(FUNDECL) 0
-
-/* Offset from the stack pointer register to an item dynamically allocated on
- the stack, e.g., by `alloca'.
-
- The default value for this macro is `STACK_POINTER_OFFSET' plus the length
- of the outgoing arguments. The default is correct for most machines. See
- `function.c' for details. */
-/* #define STACK_DYNAMIC_OFFSET(FUNDECL) */
-
-/* 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. */
-/* #define DYNAMIC_CHAIN_ADDRESS(FRAMEADDR) */
-
-/* If defined, a C expression that produces the machine-specific code to setup
- the stack so that arbitrary frames can be accessed. For example, on the
- Sparc, we must flush all of the register windows to the stack before we can
- access arbitrary stack frames. This macro will seldom need to be defined. */
-/* #define SETUP_FRAME_ADDRESSES() */
-
-/* A C expression whose value is RTL representing the value of the return
- address for the frame COUNT steps up from the current frame, after the
- prologue. FRAMEADDR is the frame pointer of the COUNT frame, or the frame
- pointer of the COUNT - 1 frame if `RETURN_ADDR_IN_PREVIOUS_FRAME' is
- defined.
-
- The value of the expression must always be the correct address when COUNT is
- zero, but may be `NULL_RTX' if there is not way to determine the return
- address of other frames. */
-
-/* ??? This definition fails for leaf functions. There is currently no
- general solution for this problem. */
-
-/* ??? There appears to be no way to get the return address of any previous
- frame except by disassembling instructions in the prologue/epilogue.
- So currently we support only the current frame. */
-
-#define RETURN_ADDR_RTX(COUNT, FRAME) \
- ((COUNT) == 0 ? d30v_return_addr() : const0_rtx)
-
-/* Define this if the return address of a particular stack frame is
- accessed from the frame pointer of the previous stack frame. */
-/* #define RETURN_ADDR_IN_PREVIOUS_FRAME */
-
-/* A C expression whose value is RTL representing the location of the incoming
- return address at the beginning of any function, before the prologue. This
- RTL is either a `REG', indicating that the return value is saved in `REG',
- or a `MEM' representing a location in the stack.
-
- You only need to define this macro if you want to support call frame
- debugging information like that provided by DWARF 2. */
-
-/* Before the prologue, RA lives in r62. */
-#define INCOMING_RETURN_ADDR_RTX gen_rtx (REG, Pmode, GPR_LINK)
-
-/* A C expression whose value is an integer giving the offset, in bytes, from
- the value of the stack pointer register to the top of the stack frame at the
- beginning of any function, before the prologue. The top of the frame is
- defined to be the value of the stack pointer in the previous frame, just
- before the call instruction.
-
- You only need to define this macro if you want to support call frame
- debugging information like that provided by DWARF 2. */
-#define INCOMING_FRAME_SP_OFFSET 0
-
-/* Initialize data used by insn expanders. This is called from insn_emit,
- once for every function before code is generated. */
-
-#define INIT_EXPANDERS d30v_init_expanders ()
-
-\f
-/* Stack Checking. */
-
-/* A nonzero value if stack checking is done by the configuration files in a
- machine-dependent manner. You should define this macro if stack checking is
- require by the ABI of your machine or if you would like to have to stack
- checking in some more efficient way than GNU CC's portable approach. The
- default value of this macro is zero. */
-/* #define STACK_CHECK_BUILTIN */
-
-/* An integer representing the interval at which GNU CC must generate stack
- probe instructions. You will normally define this macro to be no larger
- than the size of the "guard pages" at the end of a stack area. The default
- value of 4096 is suitable for most systems. */
-/* #define STACK_CHECK_PROBE_INTERVAL */
-
-/* An integer which is nonzero if GNU CC should perform the stack probe as a
- load instruction and zero if GNU CC should use a store instruction. The
- default is zero, which is the most efficient choice on most systems. */
-/* #define STACK_CHECK_PROBE_LOAD */
-
-/* The number of bytes of stack needed to recover from a stack overflow, for
- languages where such a recovery is supported. The default value of 75 words
- should be adequate for most machines. */
-/* #define STACK_CHECK_PROTECT */
-
-/* The maximum size of a stack frame, in bytes. GNU CC will generate probe
- instructions in non-leaf functions to ensure at least this many bytes of
- stack are available. If a stack frame is larger than this size, stack
- checking will not be reliable and GNU CC will issue a warning. The default
- is chosen so that GNU CC only generates one instruction on most systems.
- You should normally not change the default value of this macro. */
-/* #define STACK_CHECK_MAX_FRAME_SIZE */
-
-/* GNU CC uses this value to generate the above warning message. It represents
- the amount of fixed frame used by a function, not including space for any
- callee-saved registers, temporaries and user variables. You need only
- specify an upper bound for this amount and will normally use the default of
- four words. */
-/* #define STACK_CHECK_FIXED_FRAME_SIZE */
-
-/* The maximum size, in bytes, of an object that GNU CC will place in the fixed
- area of the stack frame when the user specifies `-fstack-check'. GNU CC
- computed the default from the values of the above macros and you will
- normally not need to override that default. */
-/* #define STACK_CHECK_MAX_VAR_SIZE */
-
-\f
-/* Register That Address the Stack Frame. */
-
-/* The register number of the stack pointer register, which must also be a
- fixed register according to `FIXED_REGISTERS'. On most machines, the
- hardware determines which register this is. */
-#define STACK_POINTER_REGNUM GPR_SP
-
-/* The register number of the frame pointer register, which is used to access
- automatic variables in the stack frame. On some machines, the hardware
- determines which register this is. On other machines, you can choose any
- register you wish for this purpose. */
-#define FRAME_POINTER_REGNUM GPR_FP
-
-/* On some machines the offset between the frame pointer and starting offset of
- the automatic variables is not known until after register allocation has
- been done (for example, because the saved registers are between these two
- locations). On those machines, define `FRAME_POINTER_REGNUM' the number of
- a special, fixed register to be used internally until the offset is known,
- and define `HARD_FRAME_POINTER_REGNUM' to be actual the hard register number
- used for the frame pointer.
-
- You should define this macro only in the very rare circumstances when it is
- not possible to calculate the offset between the frame pointer and the
- automatic variables until after register allocation has been completed.
- When this macro is defined, you must also indicate in your definition of
- `ELIMINABLE_REGS' how to eliminate `FRAME_POINTER_REGNUM' into either
- `HARD_FRAME_POINTER_REGNUM' or `STACK_POINTER_REGNUM'.
-
- Do not define this macro if it would be the same as `FRAME_POINTER_REGNUM'. */
-/* #define HARD_FRAME_POINTER_REGNUM */
-
-/* The register number of the arg pointer register, which is used to access the
- function's argument list. On some machines, this is the same as the frame
- pointer register. On some machines, the hardware determines which register
- this is. On other machines, you can choose any register you wish for this
- purpose. If this is not the same register as the frame pointer register,
- then you must mark it as a fixed register according to `FIXED_REGISTERS', or
- arrange to be able to eliminate it (*note Elimination::.). */
-/* #define ARG_POINTER_REGNUM */
-
-/* The register number of the return address pointer register, which is used to
- access the current function's return address from the stack. On some
- machines, the return address is not at a fixed offset from the frame pointer
- or stack pointer or argument pointer. This register can be defined to point
- to the return address on the stack, and then be converted by
- `ELIMINABLE_REGS' into either the frame pointer or stack pointer.
-
- Do not define this macro unless there is no other way to get the return
- address from the stack. */
-/* #define RETURN_ADDRESS_POINTER_REGNUM */
-
-/* Register numbers used for passing a function's static chain pointer. If
- register windows are used, the register number as seen by the called
- function is `STATIC_CHAIN_INCOMING_REGNUM', while the register number as
- seen by the calling function is `STATIC_CHAIN_REGNUM'. If these registers
- are the same, `STATIC_CHAIN_INCOMING_REGNUM' need not be defined.
-
- The static chain register need not be a fixed register.
-
- If the static chain is passed in memory, these macros should not be defined;
- instead, the next two macros should be defined. */
-
-#define STATIC_CHAIN_REGNUM (GPR_FIRST + 18)
-/* #define STATIC_CHAIN_INCOMING_REGNUM */
-
-/* If the static chain is passed in memory, these macros provide rtx giving
- `mem' expressions that denote where they are stored. `STATIC_CHAIN' and
- `STATIC_CHAIN_INCOMING' give the locations as seen by the calling and called
- functions, respectively. Often the former will be at an offset from the
- stack pointer and the latter at an offset from the frame pointer.
-
- The variables `stack_pointer_rtx', `frame_pointer_rtx', and
- `arg_pointer_rtx' will have been initialized prior to the use of these
- macros and should be used to refer to those items.
-
- If the static chain is passed in a register, the two previous
- macros should be defined instead. */
-/* #define STATIC_CHAIN */
-/* #define STATIC_CHAIN_INCOMING */
-
-\f
-/* Eliminating the Frame Pointer and the Arg Pointer */
-
-/* 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.
-
- The expression can in principle examine the current function and decide
- according to the facts, but on most machines the constant 0 or the constant
- 1 suffices. Use 0 when the machine allows code to be generated with no
- frame pointer, and doing so saves some time or space. Use 1 when there is
- no possible advantage to avoiding a frame pointer.
-
- In certain cases, the compiler does not know how to produce valid code
- without a frame pointer. The compiler recognizes those cases and
- automatically gives the function a frame pointer regardless of what
- `FRAME_POINTER_REQUIRED' says. You don't need to worry about them.
-
- In a function that does not require a frame pointer, the frame pointer
- register can be allocated for ordinary usage, unless you mark it as a fixed
- register. See `FIXED_REGISTERS' for more information. */
-#define FRAME_POINTER_REQUIRED 0
-
-/* A C statement to store in the variable DEPTH-VAR the difference between the
- frame pointer and the stack pointer values immediately after the function
- prologue. The value would be computed from information such as the result
- of `get_frame_size ()' and the tables of registers `regs_ever_live' and
- `call_used_regs'.
-
- If `ELIMINABLE_REGS' is defined, this macro will be not be used and need not
- be defined. Otherwise, it must be defined even if `FRAME_POINTER_REQUIRED'
- is defined to always be true; in that case, you may set DEPTH-VAR to
- anything. */
-/* #define INITIAL_FRAME_POINTER_OFFSET(DEPTH_VAR) */
-
-/* If defined, this macro specifies a table of register pairs used to eliminate
- unneeded registers that point into the stack frame. If it is not defined,
- the only elimination attempted by the compiler is to replace references to
- the frame pointer with references to the stack pointer.
-
- The definition of this macro is a list of structure initializations, each of
- which specifies an original and replacement register.
-
- On some machines, the position of the argument pointer is not known until
- the compilation is completed. In such a case, a separate hard register must
- be used for the argument pointer. This register can be eliminated by
- replacing it with either the frame pointer or the argument pointer,
- depending on whether or not the frame pointer has been eliminated.
-
- In this case, you might specify:
- #define ELIMINABLE_REGS \
- {{ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
- {ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \
- {FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}}
-
- Note that the elimination of the argument pointer with the stack pointer is
- specified first since that is the preferred elimination. */
-#define ELIMINABLE_REGS \
-{ \
- { ARG_POINTER_REGNUM, STACK_POINTER_REGNUM }, \
- { ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM }, \
- { FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM } \
-}
-
-/* A C expression that returns non-zero if the compiler is allowed to try to
- replace register number FROM-REG with register number TO-REG. This macro
- need only be defined if `ELIMINABLE_REGS' is defined, and will usually be
- the constant 1, since most of the cases preventing register elimination are
- things that the compiler already knows about. */
-
-#define CAN_ELIMINATE(FROM, TO) \
- ((FROM) == ARG_POINTER_REGNUM && (TO) == STACK_POINTER_REGNUM \
- ? ! frame_pointer_needed \
- : 1)
-
-/* This macro is similar to `INITIAL_FRAME_POINTER_OFFSET'. It specifies the
- initial difference between the specified pair of registers. This macro must
- be defined if `ELIMINABLE_REGS' is defined. */
-
-#define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
-{ \
- d30v_stack_t *info = d30v_stack_info (); \
- \
- if ((FROM) == FRAME_POINTER_REGNUM) \
- (OFFSET) = 0; \
- else if ((FROM) == ARG_POINTER_REGNUM) \
- (OFFSET) = info->total_size - current_function_pretend_args_size; \
- else \
- abort (); \
-}
-
-\f
-/* Passing Function Arguments on the Stack */
-
-/* Define this macro if an argument declared in a prototype as an integral type
- smaller than `int' should actually be passed as an `int'. In addition to
- avoiding errors in certain cases of mismatch, it also makes for better code
- on certain machines. */
-/* #define PROMOTE_PROTOTYPES */
-
-/* A C expression that is the number of bytes actually pushed onto the stack
- when an instruction attempts to push NPUSHED bytes.
-
- If the target machine does not have a push instruction, do not define this
- macro. That directs GNU CC to use an alternate strategy: to allocate the
- entire argument block and then store the arguments into it.
-
- On some machines, the definition
-
- #define PUSH_ROUNDING(BYTES) (BYTES)
-
- will suffice. But on other machines, instructions that appear to push one
- byte actually push two bytes in an attempt to maintain alignment. Then the
- definition should be
-
- #define PUSH_ROUNDING(BYTES) (((BYTES) + 1) & ~1) */
-/* #define PUSH_ROUNDING(NPUSHED) */
-
-/* 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.
-
- Defining both `PUSH_ROUNDING' and `ACCUMULATE_OUTGOING_ARGS' is not
- proper. */
-#define ACCUMULATE_OUTGOING_ARGS 1
-
-/* Define this macro if functions should assume that stack space has been
- allocated for arguments even when their values are passed in registers.
-
- The value of this macro is the size, in bytes, of the area reserved for
- arguments passed in registers for the function represented by FNDECL.
-
- This space can be allocated by the caller, or be a part of the
- machine-dependent stack frame: `OUTGOING_REG_PARM_STACK_SPACE' says
- which. */
-/* #define REG_PARM_STACK_SPACE(FNDECL) */
-
-/* Define these macros in addition to the one above if functions might allocate
- stack space for arguments even when their values are passed in registers.
- These should be used when the stack space allocated for arguments in
- registers is not a simple constant independent of the function declaration.
-
- The value of the first macro is the size, in bytes, of the area that we
- should initially assume would be reserved for arguments passed in registers.
-
- The value of the second macro is the actual size, in bytes, of the area that
- will be reserved for arguments passed in registers. This takes two
- arguments: an integer representing the number of bytes of fixed sized
- arguments on the stack, and a tree representing the number of bytes of
- variable sized arguments on the stack.
-
- When these macros are defined, `REG_PARM_STACK_SPACE' will only be called
- for libcall functions, the current function, or for a function being called
- when it is known that such stack space must be allocated. In each case this
- value can be easily computed.
-
- When deciding whether a called function needs such stack space, and how much
- space to reserve, GNU CC uses these two macros instead of
- `REG_PARM_STACK_SPACE'. */
-/* #define MAYBE_REG_PARM_STACK_SPACE */
-/* #define FINAL_REG_PARM_STACK_SPACE(CONST_SIZE, VAR_SIZE) */
-
-/* Define this if it is the responsibility of the caller to allocate the area
- reserved for arguments passed in registers.
-
- If `ACCUMULATE_OUTGOING_ARGS' is defined, this macro controls whether the
- space for these arguments counts in the value of
- `current_function_outgoing_args_size'. */
-/* #define OUTGOING_REG_PARM_STACK_SPACE */
-
-/* Define this macro if `REG_PARM_STACK_SPACE' is defined, but the stack
- parameters don't skip the area specified by it.
-
- Normally, when a parameter is not passed in registers, it is placed on the
- stack beyond the `REG_PARM_STACK_SPACE' area. Defining this macro
- suppresses this behavior and causes the parameter to be passed on the stack
- in its natural location. */
-/* #define STACK_PARMS_IN_REG_PARM_AREA */
-
-/* A C expression that should indicate the number of bytes of its own arguments
- that a function pops on returning, or 0 if the function pops no arguments
- and the caller must therefore pop them all after the function returns.
-
- FUNDECL is a C variable whose value is a tree node that describes the
- function in question. Normally it is a node of type `FUNCTION_DECL' that
- describes the declaration of the function. From this it is possible to
- obtain the DECL_ATTRIBUTES of the function.
-
- FUNTYPE is a C variable whose value is a tree node that describes the
- function in question. Normally it is a node of type `FUNCTION_TYPE' that
- describes the data type of the function. From this it is possible to obtain
- the data types of the value and arguments (if known).
-
- When a call to a library function is being considered, FUNTYPE will contain
- an identifier node for the library function. Thus, if you need to
- distinguish among various library functions, you can do so by their names.
- Note that "library function" in this context means a function used to
- perform arithmetic, whose name is known specially in the compiler and was
- not mentioned in the C code being compiled.
-
- STACK-SIZE is the number of bytes of arguments passed on the stack. If a
- variable number of bytes is passed, it is zero, and argument popping will
- always be the responsibility of the calling function.
-
- On the VAX, all functions always pop their arguments, so the definition of
- this macro is STACK-SIZE. On the 68000, using the standard calling
- convention, no functions pop their arguments, so the value of the macro is
- always 0 in this case. But an alternative calling convention is available
- in which functions that take a fixed number of arguments pop them but other
- functions (such as `printf') pop nothing (the caller pops all). When this
- convention is in use, FUNTYPE is examined to determine whether a function
- takes a fixed number of arguments. */
-#define RETURN_POPS_ARGS(FUNDECL, FUNTYPE, STACK_SIZE) 0
-
-\f
-/* Function Arguments in Registers */
-
-/* A C expression that controls whether a function argument is passed in a
- register, and which register.
-
- The arguments are CUM, which summarizes all the previous arguments; MODE,
- the machine mode of the argument; TYPE, the data type of the argument as a
- tree node or 0 if that is not known (which happens for C support library
- functions); and NAMED, which is 1 for an ordinary argument and 0 for
- nameless arguments that correspond to `...' in the called function's
- prototype.
-
- The value of the expression should either be a `reg' RTX for the hard
- register in which to pass the argument, or zero to pass the argument on the
- stack.
-
- For machines like the VAX and 68000, where normally all arguments are
- pushed, zero suffices as a definition.
-
- The usual way to make the ANSI library `stdarg.h' work on a machine where
- some arguments are usually passed in registers, is to cause nameless
- arguments to be passed on the stack instead. This is done by making
- `FUNCTION_ARG' return 0 whenever NAMED is 0.
-
- You may use the macro `MUST_PASS_IN_STACK (MODE, TYPE)' in the definition of
- this macro to determine if this argument is of a type that must be passed in
- the stack. If `REG_PARM_STACK_SPACE' is not defined and `FUNCTION_ARG'
- returns non-zero for such an argument, the compiler will abort. If
- `REG_PARM_STACK_SPACE' is defined, the argument will be computed in the
- stack and then loaded into a register. */
-
-#define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \
- d30v_function_arg (&CUM, (int)MODE, TYPE, NAMED, FALSE)
-
-/* Define this macro if the target machine has "register windows", so that the
- register in which a function sees an arguments is not necessarily the same
- as the one in which the caller passed the argument.
-
- For such machines, `FUNCTION_ARG' computes the register in which the caller
- passes the value, and `FUNCTION_INCOMING_ARG' should be defined in a similar
- fashion to tell the function being called where the arguments will arrive.
-
- If `FUNCTION_INCOMING_ARG' is not defined, `FUNCTION_ARG' serves both
- purposes. */
-
-#define FUNCTION_INCOMING_ARG(CUM, MODE, TYPE, NAMED) \
- d30v_function_arg (&CUM, (int)MODE, TYPE, NAMED, TRUE)
-
-/* 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 N words of
- arguments are passed in registers, and the rest on the stack. If a
- multi-word argument (a `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.
-
- `FUNCTION_ARG' for these arguments should return the first register to be
- used by the caller for this argument; likewise `FUNCTION_INCOMING_ARG', for
- the called function. */
-#define FUNCTION_ARG_PARTIAL_NREGS(CUM, MODE, TYPE, NAMED) \
- d30v_function_arg_partial_nregs (&CUM, (int)MODE, TYPE, NAMED)
-
-/* 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.
-
- On machines where `REG_PARM_STACK_SPACE' is not defined, a suitable
- definition of this macro might be
- #define FUNCTION_ARG_PASS_BY_REFERENCE\
- (CUM, MODE, TYPE, NAMED) \
- MUST_PASS_IN_STACK (MODE, TYPE) */
-#define FUNCTION_ARG_PASS_BY_REFERENCE(CUM, MODE, TYPE, NAMED) 0
-
-/* If defined, a C expression that indicates when it is the called function's
- responsibility to make a copy of arguments passed by invisible reference.
- Normally, the caller makes a copy and passes the address of the copy to the
- routine being called. When FUNCTION_ARG_CALLEE_COPIES is defined and is
- nonzero, the caller does not make a copy. Instead, it passes a pointer to
- the "live" value. The called function must not modify this value. If it
- can be determined that the value won't be modified, it need not make a copy;
- otherwise a copy must be made. */
-/* #define FUNCTION_ARG_CALLEE_COPIES(CUM, MODE, TYPE, NAMED) */
-
-/* A C type for declaring a variable that is used as the first argument of
- `FUNCTION_ARG' and other related values. For some target machines, the type
- `int' suffices and can hold the number of bytes of argument so far.
-
- There is no need to record in `CUMULATIVE_ARGS' anything about the arguments
- that have been passed on the stack. The compiler has other variables to
- keep track of that. For target machines on which all arguments are passed
- on the stack, there is no need to store anything in `CUMULATIVE_ARGS';
- however, the data structure must exist and should not be empty, so use
- `int'. */
-typedef int CUMULATIVE_ARGS;
-
-/* A C statement (sans semicolon) for initializing the variable CUM for the
- state at the beginning of the argument list. The variable has type
- `CUMULATIVE_ARGS'. The value of FNTYPE is the tree node for the data type
- of the function which will receive the args, or 0 if the args are to a
- compiler support library function. The value of INDIRECT is nonzero when
- processing an indirect call, for example a call through a function pointer.
- The value of INDIRECT is zero for a call to an explicitly named function, a
- library function call, or when `INIT_CUMULATIVE_ARGS' is used to find
- arguments for the function being compiled.
-
- When processing a call to a compiler support library function, LIBNAME
- identifies which one. It is a `symbol_ref' rtx which contains the name of
- the function, as a string. LIBNAME is 0 when an ordinary C function call is
- being processed. Thus, each time this macro is called, either LIBNAME or
- FNTYPE is nonzero, but never both of them at once. */
-
-#define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, INDIRECT) \
- d30v_init_cumulative_args (&CUM, FNTYPE, LIBNAME, INDIRECT, FALSE)
-
-/* Like `INIT_CUMULATIVE_ARGS' but overrides it for the purposes of finding the
- arguments for the function being compiled. If this macro is undefined,
- `INIT_CUMULATIVE_ARGS' is used instead.
-
- The value passed for LIBNAME is always 0, since library routines with
- special calling conventions are never compiled with GNU CC. The argument
- LIBNAME exists for symmetry with `INIT_CUMULATIVE_ARGS'. */
-
-#define INIT_CUMULATIVE_INCOMING_ARGS(CUM, FNTYPE, LIBNAME) \
- d30v_init_cumulative_args (&CUM, FNTYPE, LIBNAME, FALSE, TRUE)
-
-/* A C statement (sans semicolon) to update the summarizer variable CUM to
- advance past an argument in the argument list. The values MODE, TYPE and
- NAMED describe that argument. Once this is done, the variable CUM is
- suitable for analyzing the *following* argument with `FUNCTION_ARG', etc.
-
- This macro need not do anything if the argument in question was passed on
- the stack. The compiler knows how to track the amount of stack space used
- for arguments without any special help. */
-
-#define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \
- d30v_function_arg_advance (&CUM, (int) MODE, TYPE, NAMED)
-
-/* If defined, a C expression which determines whether, and in which direction,
- to pad out an argument with extra space. The value should be of type `enum
- direction': either `upward' to pad above the argument, `downward' to pad
- below, or `none' to inhibit padding.
-
- The *amount* of padding is always just enough to reach the next multiple of
- `FUNCTION_ARG_BOUNDARY'; this macro does not control it.
-
- This macro has a default definition which is right for most systems. For
- little-endian machines, the default is to pad upward. For big-endian
- machines, the default is to pad downward for an argument of constant size
- shorter than an `int', and upward otherwise. */
-/* #define FUNCTION_ARG_PADDING(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) \
- d30v_function_arg_boundary ((int) MODE, TYPE)
-
-/* A C expression that is nonzero if REGNO is the number of a hard register in
- which function arguments are sometimes passed. This does *not* include
- implicit arguments such as the static chain and the structure-value address.
- On many machines, no registers can be used for this purpose since all
- function arguments are pushed on the stack. */
-
-#define FUNCTION_ARG_REGNO_P(REGNO) \
- IN_RANGE_P (REGNO, GPR_ARG_FIRST, GPR_ARG_LAST)
-
-\f
-/* How Scalar Function Values are Returned */
-
-/* Define this macro if `-traditional' should not cause functions declared to
- return `float' to convert the value to `double'. */ /* #define
- TRADITIONAL_RETURN_FLOAT */
-
-/* A C expression to create an RTX representing the place where a function
- returns a value of data type VALTYPE. VALTYPE is a tree node representing a
- data type. Write `TYPE_MODE (VALTYPE)' to get the machine mode used to
- represent that type. On many machines, only the mode is relevant.
- (Actually, on most machines, scalar values are returned in the same place
- regardless of mode).
-
- If `PROMOTE_FUNCTION_RETURN' is defined, you must apply the same promotion
- rules specified in `PROMOTE_MODE' if VALTYPE is a scalar type.
-
- If the precise function being called is known, FUNC is a tree node
- (`FUNCTION_DECL') for it; otherwise, FUNC is a null pointer. This makes it
- possible to use a different value-returning convention for specific
- functions when all their calls are known.
-
- `FUNCTION_VALUE' is not used for return vales with aggregate data types,
- because these are returned in another way. See `STRUCT_VALUE_REGNUM' and
- related macros, below. */
-
-#define FUNCTION_VALUE(VALTYPE, FUNC) \
- gen_rtx (REG, TYPE_MODE (VALTYPE), GPR_RET_VALUE)
-
-/* Define this macro if the target machine has "register windows" so that the
- register in which a function returns its value is not the same as the one in
- which the caller sees the value.
-
- For such machines, `FUNCTION_VALUE' computes the register in which the
- caller will see the value. `FUNCTION_OUTGOING_VALUE' should be defined in a
- similar fashion to tell the function where to put the value.
-
- If `FUNCTION_OUTGOING_VALUE' is not defined, `FUNCTION_VALUE' serves both
- purposes.
-
- `FUNCTION_OUTGOING_VALUE' is not used for return vales with aggregate data
- types, because these are returned in another way. See `STRUCT_VALUE_REGNUM'
- and related macros, below. */
-/* #define FUNCTION_OUTGOING_VALUE(VALTYPE, FUNC) */
-
-/* A C expression to create an RTX representing the place where a library
- function returns a value of mode MODE. If the precise function being called
- is known, FUNC is a tree node (`FUNCTION_DECL') for it; otherwise, FUNC is a
- null pointer. This makes it possible to use a different value-returning
- convention for specific functions when all their calls are known.
-
- Note that "library function" in this context means a compiler support
- routine, used to perform arithmetic, whose name is known specially by the
- compiler and was not mentioned in the C code being compiled.
-
- The definition of `LIBRARY_VALUE' need not be concerned aggregate data
- types, because none of the library functions returns such types. */
-
-#define LIBCALL_VALUE(MODE) gen_rtx (REG, MODE, GPR_RET_VALUE)
-
-/* A C expression that is nonzero if REGNO is the number of a hard register in
- which the values of called function may come back.
-
- A register whose use for returning values is limited to serving as the
- second of a pair (for a value of type `double', say) need not be recognized
- by this macro. So for most machines, this definition suffices:
-
- #define FUNCTION_VALUE_REGNO_P(N) ((N) == 0)
-
- If the machine has register windows, so that the caller and the called
- function use different registers for the return value, this macro should
- recognize only the caller's register numbers. */
-
-#define FUNCTION_VALUE_REGNO_P(REGNO) ((REGNO) == GPR_RET_VALUE)
-
-/* Define this macro if `untyped_call' and `untyped_return' need more space
- than is implied by `FUNCTION_VALUE_REGNO_P' for saving and restoring an
- arbitrary return value. */
-/* #define APPLY_RESULT_SIZE */
-
-\f
-/* How Large Values are Returned */
-
-/* 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.
-
- Note that values of mode `BLKmode' must be explicitly handled by this macro.
- Also, the option `-fpcc-struct-return' takes effect regardless of this
- macro. On most systems, it is possible to leave the macro undefined; this
- causes a default definition to be used, whose value is the constant 1 for
- `BLKmode' values, and 0 otherwise.
-
- Do not use this macro to indicate that structures and unions should always
- be returned in memory. You should instead use `DEFAULT_PCC_STRUCT_RETURN'
- to indicate this. */
-/* #define RETURN_IN_MEMORY(TYPE) */
-
-/* Define this macro to be 1 if all structure and union return values must be
- in memory. Since this results in slower code, this should be defined only
- if needed for compatibility with other compilers or with an ABI. If you
- define this macro to be 0, then the conventions used for structure and union
- return values are decided by the `RETURN_IN_MEMORY' macro.
-
- If not defined, this defaults to the value 1. */
-/* #define DEFAULT_PCC_STRUCT_RETURN */
-
-/* If the structure value address is passed in a register, then
- `STRUCT_VALUE_REGNUM' should be the number of that register. */
-
-#define STRUCT_VALUE_REGNUM GPR_ARG_FIRST
-
-/* If the structure value address is not passed in a register, define
- `STRUCT_VALUE' as an expression returning an RTX for the place where the
- address is passed. If it returns 0, the address is passed as an "invisible"
- first argument. */
-
-#define STRUCT_VALUE 0
-
-/* On some architectures the place where the structure value address is found
- by the called function is not the same place that the caller put it. This
- can be due to register windows, or it could be because the function prologue
- moves it to a different place.
-
- If the incoming location of the structure value address is in a register,
- define this macro as the register number. */
-/* #define STRUCT_VALUE_INCOMING_REGNUM */
-
-/* If the incoming location is not a register, then you should define
- `STRUCT_VALUE_INCOMING' as an expression for an RTX for where the called
- function should find the value. If it should find the value on the stack,
- define this to create a `mem' which refers to the frame pointer. A
- definition of 0 means that the address is passed as an "invisible" first
- argument. */
-/* #define STRUCT_VALUE_INCOMING */
-
-/* Define this macro if the usual system convention on the target machine for
- returning structures and unions is for the called function to return the
- address of a static variable containing the value.
-
- Do not define this if the usual system convention is for the caller to pass
- an address to the subroutine.
-
- This macro has effect in `-fpcc-struct-return' mode, but it does nothing
- when you use `-freg-struct-return' mode. */
-/* #define PCC_STATIC_STRUCT_RETURN */
-
-\f
-/* Caller-Saves Register Allocation */
-
-/* Define this macro if function calls on the target machine do not preserve
- any registers; in other words, if `CALL_USED_REGISTERS' has 1 for all
- registers. This macro enables `-fcaller-saves' by default. Eventually that
- option will be enabled by default on all machines and both the option and
- this macro will be eliminated. */
-/* #define DEFAULT_CALLER_SAVES */
-
-/* A C expression to determine whether it is worthwhile to consider placing a
- pseudo-register in a call-clobbered hard register and saving and restoring
- it around each function call. The expression should be 1 when this is worth
- doing, and 0 otherwise.
-
- If you don't define this macro, a default is used which is good on most
- machines: `4 * CALLS < REFS'. */
-/* #define CALLER_SAVE_PROFITABLE(REFS, CALLS) */
-
-\f
-/* #define EXIT_IGNORE_STACK */
-
-/* Define this macro as a C expression that is nonzero for registers
- are used by the epilogue or the `return' pattern. The stack and
- frame pointer registers are already be assumed to be used as
- needed. */
-#define EPILOGUE_USES(REGNO) ((REGNO) == GPR_LINK)
-
-/* Define this macro if the function epilogue contains delay slots to which
- instructions from the rest of the function can be "moved". The definition
- should be a C expression whose value is an integer representing the number
- of delay slots there. */
-/* #define DELAY_SLOTS_FOR_EPILOGUE */
-
-/* A C expression that returns 1 if INSN can be placed in delay slot number N
- of the epilogue.
-
- The argument N is an integer which identifies the delay slot now being
- considered (since different slots may have different rules of eligibility).
- It is never negative and is always less than the number of epilogue delay
- slots (what `DELAY_SLOTS_FOR_EPILOGUE' returns). If you reject a particular
- insn for a given delay slot, in principle, it may be reconsidered for a
- subsequent delay slot. Also, other insns may (at least in principle) be
- considered for the so far unfilled delay slot.
-
- The insns accepted to fill the epilogue delay slots are put in an
- RTL list made with `insn_list' objects, stored in the variable
- `current_function_epilogue_delay_list'. The insn for the first
- delay slot comes first in the list. Your definition of the function
- output_function_epilogue() should fill the delay slots by outputting the
- insns in this list, usually by calling `final_scan_insn'.
-
- You need not define this macro if you did not define
- `DELAY_SLOTS_FOR_EPILOGUE'. */
-/* #define ELIGIBLE_FOR_EPILOGUE_DELAY(INSN, N) */
-
-/* A C compound statement that outputs the assembler code for a thunk function,
- used to implement C++ virtual function calls with multiple inheritance. The
- thunk acts as a wrapper around a virtual function, adjusting the implicit
- object parameter before handing control off to the real function.
-
- First, emit code to add the integer DELTA to the location that contains the
- incoming first argument. Assume that this argument contains a pointer, and
- is the one used to pass the `this' pointer in C++. This is the incoming
- argument *before* the function prologue, e.g. `%o0' on a sparc. The
- addition must preserve the values of all other incoming arguments.
-
- After the addition, emit code to jump to FUNCTION, which is a
- `FUNCTION_DECL'. This is a direct pure jump, not a call, and does not touch
- the return address. Hence returning from FUNCTION will return to whoever
- called the current `thunk'.
-
- The effect must be as if FUNCTION had been called directly with the
- adjusted first argument. This macro is responsible for emitting
- all of the code for a thunk function; output_function_prologue()
- and output_function_epilogue() are not invoked.
-
- The THUNK_FNDECL is redundant. (DELTA and FUNCTION have already been
- extracted from it.) It might possibly be useful on some targets, but
- probably not.
-
- If you do not define this macro, the target-independent code in the C++
- frontend will generate a less efficient heavyweight thunk that calls
- FUNCTION instead of jumping to it. The generic approach does not support
- varargs. */
-/* #define ASM_OUTPUT_MI_THUNK(FILE, THUNK_FNDECL, DELTA, FUNCTION) */
-
-/* A C structure for machine-specific, per-function data.
- This is added to the cfun structure. */
-typedef struct machine_function
-{
- /* Additionsl stack adjustment in __builtin_eh_throw. */
- struct rtx_def * eh_epilogue_sp_ofs;
-} machine_function;
-
-\f
-/* Generating Code for Profiling. */
-
-/* A C statement or compound statement to output to FILE some assembler code to
- call the profiling subroutine `mcount'. Before calling, the assembler code
- must load the address of a counter variable into a register where `mcount'
- expects to find the address. The name of this variable is `LP' followed by
- the number LABELNO, so you would generate the name using `LP%d' in a
- `fprintf'.
-
- The details of how the address should be passed to `mcount' are determined
- by your operating system environment, not by GNU CC. To figure them out,
- compile a small program for profiling using the system's installed C
- compiler and look at the assembler code that results. */
-
-#define FUNCTION_PROFILER(FILE, LABELNO) d30v_function_profiler (FILE, LABELNO)
-
-/* Define this macro if the code for function profiling should come before the
- function prologue. Normally, the profiling code comes after. */
-/* #define PROFILE_BEFORE_PROLOGUE */
-
-\f
-/* Implementing the Varargs Macros. */
-
-/* If defined, is a C expression that produces the machine-specific code for a
- call to `__builtin_saveregs'. This code will be moved to the very beginning
- of the function, before any parameter access are made. The return value of
- this function should be an RTX that contains the value to use as the return
- of `__builtin_saveregs'.
-
- If this macro is not defined, the compiler will output an ordinary call to
- the library function `__builtin_saveregs'. */
-
-#define EXPAND_BUILTIN_SAVEREGS() d30v_expand_builtin_saveregs ()
-
-/* 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_ARGS_SIZE. The value that you
- store here will serve as additional offset for setting up the stack frame.
-
- Because you must generate code to push the anonymous arguments at compile
- time without knowing their data types, `SETUP_INCOMING_VARARGS' is only
- useful on machines that have just a single category of argument register and
- use it uniformly for all data types.
-
- If the argument SECOND_TIME 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_ARGS_SIZE, SECOND_TIME) \
- d30v_setup_incoming_varargs (&ARGS_SO_FAR, (int) MODE, TYPE, \
- &PRETEND_ARGS_SIZE, SECOND_TIME)
-
-/* Define this macro if the location where a function argument is passed
- depends on whether or not it is a named argument.
-
- This macro controls how the NAMED argument to `FUNCTION_ARG' is set for
- varargs and stdarg functions. With this macro defined, the NAMED argument
- is always true for named arguments, and false for unnamed arguments. If
- this is not defined, but `SETUP_INCOMING_VARARGS' is defined, then all
- arguments are treated as named. Otherwise, all named arguments except the
- last are treated as named. */
-/* #define STRICT_ARGUMENT_NAMING */
-
-/* Build up the stdarg/varargs va_list type tree, assinging it to NODE. If not
- defined, it is assumed that va_list is a void * pointer. */
-
-#define BUILD_VA_LIST_TYPE(VALIST) \
- (VALIST) = d30v_build_va_list ()
-
-
-/* Implement the stdarg/varargs va_start macro. STDARG_P is non-zero if this
- is stdarg.h instead of varargs.h. VALIST is the tree of the va_list
- variable to initialize. NEXTARG is the machine independent notion of the
- 'next' argument after the variable arguments. If not defined, a standard
- implementation will be defined that works for arguments passed on the stack. */
-
-#define EXPAND_BUILTIN_VA_START(STDARG_P, VALIST, NEXTARG) \
-(d30v_expand_builtin_va_start(STDARG_P, VALIST, NEXTARG))
-
-/* Implement the stdarg/varargs va_arg macro. VALIST is the variable of type
- va_list as a tree, TYPE is the type passed to va_arg. */
-
-#define EXPAND_BUILTIN_VA_ARG(VALIST, TYPE) \
-(d30v_expand_builtin_va_arg (VALIST, TYPE))
-
-/* Implement the stdarg/varargs va_end macro.
- VALIST is the variable of type va_list as a tree. */
-
-/* #define EXPAND_BUILTIN_VA_END(VALIST) */
-
-
-\f
-/* Trampolines for Nested Functions. */
-
-/* A C statement to output, on the stream FILE, assembler code for a block of
- data that contains the constant parts of a trampoline. This code should not
- include a label--the label is taken care of automatically. */
-/* #define TRAMPOLINE_TEMPLATE(FILE) d30v_trampoline_template (FILE) */
-
-/* The name of a subroutine to switch to the section in which the trampoline
- template is to be placed (*note Sections::.). The default is a value of
- `readonly_data_section', which places the trampoline in the section
- containing read-only data. */
-/* #define TRAMPOLINE_SECTION */
-
-/* A C expression for the size in bytes of the trampoline, as an integer. */
-#define TRAMPOLINE_SIZE (d30v_trampoline_size ())
-
-/* Alignment required for trampolines, in bits.
-
- If you don't define this macro, the value of `BIGGEST_ALIGNMENT' is used for
- aligning trampolines. */
-#define TRAMPOLINE_ALIGNMENT 64
-
-/* A C statement to initialize the variable parts of a trampoline. ADDR is an
- RTX for the address of the trampoline; FNADDR is an RTX for the address of
- the nested function; STATIC_CHAIN is an RTX for the static chain value that
- should be passed to the function when it is called. */
-#define INITIALIZE_TRAMPOLINE(ADDR, FNADDR, STATIC_CHAIN) \
- d30v_initialize_trampoline (ADDR, FNADDR, STATIC_CHAIN)
-
-/* A C expression to allocate run-time space for a trampoline. The expression
- value should be an RTX representing a memory reference to the space for the
- trampoline.
-
- If this macro is not defined, by default the trampoline is allocated as a
- stack slot. This default is right for most machines. The exceptions are
- machines where it is impossible to execute instructions in the stack area.
- On such machines, you may have to implement a separate stack, using this
- macro in conjunction with output_function_prologue () and
- output_function_epilogue ().
-
- FP points to a data structure, a `struct function', which describes the
- compilation status of the immediate containing function of the function
- which the trampoline is for. Normally (when `ALLOCATE_TRAMPOLINE' is not
- defined), the stack slot for the trampoline is in the stack frame of this
- containing function. Other allocation strategies probably must do something
- analogous with this information. */
-/* #define ALLOCATE_TRAMPOLINE(FP) */
-
-/* Implementing trampolines is difficult on many machines because they have
- separate instruction and data caches. Writing into a stack location fails
- to clear the memory in the instruction cache, so when the program jumps to
- that location, it executes the old contents.
-
- Here are two possible solutions. One is to clear the relevant parts of the
- instruction cache whenever a trampoline is set up. The other is to make all
- trampolines identical, by having them jump to a standard subroutine. The
- former technique makes trampoline execution faster; the latter makes
- initialization faster.
-
- To clear the instruction cache when a trampoline is initialized, define the
- following macros which describe the shape of the cache. */
-
-/* The total size in bytes of the cache. */
-/* #define INSN_CACHE_SIZE */
-
-/* The length in bytes of each cache line. The cache is divided into cache
- lines which are disjoint slots, each holding a contiguous chunk of data
- fetched from memory. Each time data is brought into the cache, an entire
- line is read at once. The data loaded into a cache line is always aligned
- on a boundary equal to the line size. */
-/* #define INSN_CACHE_LINE_WIDTH */
-
-/* The number of alternative cache lines that can hold any particular memory
- location. */
-/* #define INSN_CACHE_DEPTH */
-
-/* Alternatively, if the machine has system calls or instructions to clear the
- instruction cache directly, you can define the following macro. */
-
-/* If defined, expands to a C expression clearing the *instruction cache* in
- the specified interval. If it is not defined, and the macro INSN_CACHE_SIZE
- is defined, some generic code is generated to clear the cache. The
- definition of this macro would typically be a series of `asm' statements.
- Both BEG and END are both pointer expressions. */
-/* #define CLEAR_INSN_CACHE (BEG, END) */
-
-/* To use a standard subroutine, define the following macro. In addition, you
- must make sure that the instructions in a trampoline fill an entire cache
- line with identical instructions, or else ensure that the beginning of the
- trampoline code is always aligned at the same point in its cache line. Look
- in `m68k.h' as a guide. */
-
-/* Define this macro if trampolines need a special subroutine to do their work.
- The macro should expand to a series of `asm' statements which will be
- compiled with GNU CC. They go in a library function named
- `__transfer_from_trampoline'.
-
- If you need to avoid executing the ordinary prologue code of a compiled C
- function when you jump to the subroutine, you can do so by placing a special
- label of your own in the assembler code. Use one `asm' statement to
- generate an assembler label, and another to make the label global. Then
- trampolines can use that label to jump directly to your special assembler
- code. */
-/* #define TRANSFER_FROM_TRAMPOLINE */
-
-\f
-/* Implicit Calls to Library Routines */
-
-/* A C string constant giving the name of the function to call for
- multiplication of one signed full-word by another. If you do not define
- this macro, the default name is used, which is `__mulsi3', a function
- defined in `libgcc.a'. */
-/* #define MULSI3_LIBCALL */
-
-/* A C string constant giving the name of the function to call for division of
- one signed full-word by another. If you do not define this macro, the
- default name is used, which is `__divsi3', a function defined in `libgcc.a'. */
-/* #define DIVSI3_LIBCALL */
-
-/* A C string constant giving the name of the function to call for division of
- one unsigned full-word by another. If you do not define this macro, the
- default name is used, which is `__udivsi3', a function defined in
- `libgcc.a'. */
-/* #define UDIVSI3_LIBCALL */
-
-/* A C string constant giving the name of the function to call for the
- remainder in division of one signed full-word by another. If you do not
- define this macro, the default name is used, which is `__modsi3', a function
- defined in `libgcc.a'. */
-/* #define MODSI3_LIBCALL */
-
-/* A C string constant giving the name of the function to call for the
- remainder in division of one unsigned full-word by another. If you do not
- define this macro, the default name is used, which is `__umodsi3', a
- function defined in `libgcc.a'. */
-/* #define UMODSI3_LIBCALL */
-
-/* A C string constant giving the name of the function to call for
- multiplication of one signed double-word by another. If you do not define
- this macro, the default name is used, which is `__muldi3', a function
- defined in `libgcc.a'. */
-/* #define MULDI3_LIBCALL */
-
-/* A C string constant giving the name of the function to call for division of
- one signed double-word by another. If you do not define this macro, the
- default name is used, which is `__divdi3', a function defined in `libgcc.a'. */
-/* #define DIVDI3_LIBCALL */
-
-/* A C string constant giving the name of the function to call for division of
- one unsigned full-word by another. If you do not define this macro, the
- default name is used, which is `__udivdi3', a function defined in
- `libgcc.a'. */
-/* #define UDIVDI3_LIBCALL */
-
-/* A C string constant giving the name of the function to call for the
- remainder in division of one signed double-word by another. If you do not
- define this macro, the default name is used, which is `__moddi3', a function
- defined in `libgcc.a'. */
-/* #define MODDI3_LIBCALL */
-
-/* A C string constant giving the name of the function to call for the
- remainder in division of one unsigned full-word by another. If you do not
- define this macro, the default name is used, which is `__umoddi3', a
- function defined in `libgcc.a'. */
-/* #define UMODDI3_LIBCALL */
-
-/* Define this macro as a C statement that declares additional library routines
- renames existing ones. `init_optabs' calls this macro after initializing all
- the normal library routines. */
-/* #define INIT_TARGET_OPTABS */
-
-/* The value of `EDOM' on the target machine, as a C integer constant
- expression. If you don't define this macro, GNU CC does not attempt to
- deposit the value of `EDOM' into `errno' directly. Look in
- `/usr/include/errno.h' to find the value of `EDOM' on your system.
-
- If you do not define `TARGET_EDOM', then compiled code reports domain errors
- by calling the library function and letting it report the error. If
- mathematical functions on your system use `matherr' when there is an error,
- then you should leave `TARGET_EDOM' undefined so that `matherr' is used
- normally. */
-/* #define TARGET_EDOM */
-
-/* Define this macro as a C expression to create an rtl expression that refers
- to the global "variable" `errno'. (On certain systems, `errno' may not
- actually be a variable.) If you don't define this macro, a reasonable
- default is used. */
-/* #define GEN_ERRNO_RTX */
-
-/* Define this macro if GNU CC should generate calls to the System V (and ANSI
- C) library functions `memcpy' and `memset' rather than the BSD functions
- `bcopy' and `bzero'.
-
- Defined in svr4.h. */
-/* #define TARGET_MEM_FUNCTIONS */
-
-/* Define this macro to generate code for Objective C message sending using the
- calling convention of the NeXT system. This calling convention involves
- passing the object, the selector and the method arguments all at once to the
- method-lookup library function.
-
- The default calling convention passes just the object and the selector to
- the lookup function, which returns a pointer to the method. */
-/* #define NEXT_OBJC_RUNTIME */
-
-\f
-/* Addressing Modes */
-
-/* Define this macro if the machine supports post-increment addressing. */
-#define HAVE_POST_INCREMENT 1
-
-/* Similar for other kinds of addressing. */
-/* #define HAVE_PRE_INCREMENT 0 */
-#define HAVE_POST_DECREMENT 1
-/* #define HAVE_PRE_DECREMENT 0 */
-
-/* A C expression that is 1 if the RTX X is a constant which is a valid
- address. On most machines, this can be defined as `CONSTANT_P (X)', but a
- few machines are more restrictive in which constant addresses are supported.
-
- `CONSTANT_P' accepts integer-values expressions whose values are not
- explicitly known, such as `symbol_ref', `label_ref', and `high' expressions
- and `const' arithmetic expressions, in addition to `const_int' and
- `const_double' expressions. */
-#define CONSTANT_ADDRESS_P(X) CONSTANT_P (X)
-
-/* A number, the maximum number of registers that can appear in a valid memory
- address. Note that it is up to you to specify a value equal to the maximum
- number that `GO_IF_LEGITIMATE_ADDRESS' would ever accept. */
-#define MAX_REGS_PER_ADDRESS 2
-
-/* A C compound statement with a conditional `goto LABEL;' executed if X (an
- RTX) is a legitimate memory address on the target machine for a memory
- operand of mode MODE.
-
- It usually pays to define several simpler macros to serve as subroutines for
- this one. Otherwise it may be too complicated to understand.
-
- This macro must exist in two variants: a strict variant and a non-strict
- one. The strict variant is used in the reload pass. It must be defined so
- that any pseudo-register that has not been allocated a hard register is
- considered a memory reference. In contexts where some kind of register is
- required, a pseudo-register with no hard register must be rejected.
-
- The non-strict variant is used in other passes. It must be defined to
- accept all pseudo-registers in every context where some kind of register is
- required.
-
- Compiler source files that want to use the strict variant of this macro
- define the macro `REG_OK_STRICT'. You should use an `#ifdef REG_OK_STRICT'
- conditional to define the strict variant in that case and the non-strict
- variant otherwise.
-
- Subroutines to check for acceptable registers for various purposes (one for
- base registers, one for index registers, and so on) are typically among the
- subroutines used to define `GO_IF_LEGITIMATE_ADDRESS'. Then only these
- subroutine macros need have two variants; the higher levels of macros may be
- the same whether strict or not.
-
- Normally, constant addresses which are the sum of a `symbol_ref' and an
- integer are stored inside a `const' RTX to mark them as constant.
- Therefore, there is no need to recognize such sums specifically as
- legitimate addresses. Normally you would simply recognize any `const' as
- legitimate.
-
- Usually `PRINT_OPERAND_ADDRESS' is not prepared to handle constant sums that
- are not marked with `const'. It assumes that a naked `plus' indicates
- indexing. If so, then you *must* reject such naked constant sums as
- illegitimate addresses, so that none of them will be given to
- `PRINT_OPERAND_ADDRESS'.
-
- On some machines, whether a symbolic address is legitimate 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. When you see a `const', you will have to look
- inside it to find the `symbol_ref' in order to determine the section. *Note
- Assembler Format::.
-
- The best way to modify the name string is by adding text to the beginning,
- with suitable punctuation to prevent any ambiguity. Allocate the new name
- in `saveable_obstack'. You will have to modify `ASM_OUTPUT_LABELREF' to
- remove and decode the added text and output the name accordingly, and define
- `STRIP_NAME_ENCODING' to access the original name string.
-
- You can check the information stored here into the `symbol_ref' in the
- definitions of the macros `GO_IF_LEGITIMATE_ADDRESS' and
- `PRINT_OPERAND_ADDRESS'. */
-
-#ifdef REG_OK_STRICT
-#define REG_OK_STRICT_P 1
-#else
-#define REG_OK_STRICT_P 0
-#endif
-
-#define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR) \
-do { \
- if (d30v_legitimate_address_p ((int)MODE, X, REG_OK_STRICT_P)) \
- goto ADDR; \
-} while (0)
-
-/* A C expression that is nonzero if X (assumed to be a `reg' RTX) is valid for
- use as a base register. For hard registers, it should always accept those
- which the hardware permits and reject the others. Whether the macro accepts
- or rejects pseudo registers must be controlled by `REG_OK_STRICT' as
- described above. This usually requires two variant definitions, of which
- `REG_OK_STRICT' controls the one actually used. */
-
-#ifdef REG_OK_STRICT
-#define REG_OK_FOR_BASE_P(X) (GPR_P (REGNO (X)))
-#else
-#define REG_OK_FOR_BASE_P(X) (GPR_OR_PSEUDO_P (REGNO (X)))
-#endif
-
-/* A C expression that is nonzero if X (assumed to be a `reg' RTX) is valid for
- use as an index register.
-
- The difference between an index register and a base register is that the
- index register may be scaled. If an address involves the sum of two
- registers, neither one of them scaled, then either one may be labeled the
- "base" and the other the "index"; but whichever labeling is used must fit
- the machine's constraints of which registers may serve in each capacity.
- The compiler will try both labelings, looking for one that is valid, and
- will reload one or both registers only if neither labeling works. */
-
-#define REG_OK_FOR_INDEX_P(X) REG_OK_FOR_BASE_P (X)
-
-/* A C compound statement that attempts to replace X with a valid memory
- address for an operand of mode MODE. WIN will be a C statement label
- elsewhere in the code; the macro definition may use
-
- GO_IF_LEGITIMATE_ADDRESS (MODE, X, WIN);
-
- to avoid further processing if the address has become legitimate.
-
- X will always be the result of a call to `break_out_memory_refs', and OLDX
- will be the operand that was given to that function to produce X.
-
- The code generated by this macro should not alter the substructure of X. If
- it transforms X into a more legitimate form, it should assign X (which will
- always be a C variable) a new value.
-
- It is not necessary for this macro to come up with a legitimate address.
- The compiler has standard ways of doing so in all cases. In fact, it is
- safe for this macro to do nothing. But often a machine-dependent strategy
- can generate better code. */
-
-#define LEGITIMIZE_ADDRESS(X, OLDX, MODE, WIN) \
-do { \
- rtx y = d30v_legitimize_address (X, OLDX, (int)MODE, REG_OK_STRICT_P); \
- if (y) \
- { \
- X = y; \
- GO_IF_LEGITIMATE_ADDRESS (MODE, X, WIN); \
- } \
-} while (0)
-
-/* A C statement or compound statement with a conditional `goto LABEL;'
- executed if memory address X (an RTX) can have different meanings depending
- on the machine mode of the memory reference it is used for or if the address
- is valid for some modes but not others.
-
- Autoincrement and autodecrement addresses typically have mode-dependent
- effects because the amount of the increment or decrement is the size of the
- operand being addressed. Some machines have other mode-dependent addresses.
- Many RISC machines have no mode-dependent addresses.
-
- You may assume that ADDR is a valid address for the machine. */
-
-#define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR, LABEL) \
-do { \
- if (d30v_mode_dependent_address_p (ADDR)) \
- goto LABEL; \
-} while (0) \
-
-/* A C expression that is nonzero if X is a legitimate constant for an
- immediate operand on the target machine. You can assume that X satisfies
- `CONSTANT_P', so you need not check this. In fact, `1' is a suitable
- definition for this macro on machines where anything `CONSTANT_P' is valid. */
-#define LEGITIMATE_CONSTANT_P(X) 1
-
-\f
-/* Condition Code Status */
-
-/* C code for a data type which is used for declaring the `mdep' component of
- `cc_status'. It defaults to `int'.
-
- This macro is not used on machines that do not use `cc0'. */
-/* #define CC_STATUS_MDEP */
-
-/* A C expression to initialize the `mdep' field to "empty". The default
- definition does nothing, since most machines don't use the field anyway. If
- you want to use the field, you should probably define this macro to
- initialize it.
-
- This macro is not used on machines that do not use `cc0'. */
-/* #define CC_STATUS_MDEP_INIT */
-
-/* A C compound statement to set the components of `cc_status' appropriately
- for an insn INSN whose body is EXP. It is this macro's responsibility to
- recognize insns that set the condition code as a byproduct of other activity
- as well as those that explicitly set `(cc0)'.
-
- This macro is not used on machines that do not use `cc0'.
-
- If there are insns that do not set the condition code but do alter other
- machine registers, this macro must check to see whether they invalidate the
- expressions that the condition code is recorded as reflecting. For example,
- on the 68000, insns that store in address registers do not set the condition
- code, which means that usually `NOTICE_UPDATE_CC' can leave `cc_status'
- unaltered for such insns. But suppose that the previous insn set the
- condition code based on location `a4@(102)' and the current insn stores a
- new value in `a4'. Although the condition code is not changed by this, it
- will no longer be true that it reflects the contents of `a4@(102)'.
- Therefore, `NOTICE_UPDATE_CC' must alter `cc_status' in this case to say
- that nothing is known about the condition code value.
-
- The definition of `NOTICE_UPDATE_CC' must be prepared to deal with the
- results of peephole optimization: insns whose patterns are `parallel' RTXs
- containing various `reg', `mem' or constants which are just the operands.
- The RTL structure of these insns is not sufficient to indicate what the
- insns actually do. What `NOTICE_UPDATE_CC' should do when it sees one is
- just to run `CC_STATUS_INIT'.
-
- A possible definition of `NOTICE_UPDATE_CC' is to call a function that looks
- at an attribute (*note Insn Attributes::.) named, for example, `cc'. This
- avoids having detailed information about patterns in two places, the `md'
- file and in `NOTICE_UPDATE_CC'. */
-/* #define NOTICE_UPDATE_CC(EXP, INSN) */
-
-/* A list of names to be used for additional modes for condition code values in
- registers (*note Jump Patterns::.). These names are added to `enum
- machine_mode' and all have class `MODE_CC'. By convention, they should
- start with `CC' and end with `mode'.
-
- You should only define this macro if your machine does not use `cc0' and
- only if additional modes are required. */
-/* #define EXTRA_CC_MODES */
-
-/* Returns a mode from class `MODE_CC' to be used when comparison operation
- code OP is applied to rtx X and Y. For example, on the Sparc,
- `SELECT_CC_MODE' is defined as (see *note Jump Patterns::. for a
- description of the reason for this definition)
-
- #define SELECT_CC_MODE(OP,X,Y) \
- (GET_MODE_CLASS (GET_MODE (X)) == MODE_FLOAT \
- ? ((OP == EQ || OP == NE) ? CCFPmode : CCFPEmode) \
- : ((GET_CODE (X) == PLUS || GET_CODE (X) == MINUS \
- || GET_CODE (X) == NEG) \
- ? CC_NOOVmode : CCmode))
-
- You need not define this macro if `EXTRA_CC_MODES' is not defined. */
-/* #define SELECT_CC_MODE(OP, X, Y) */
-
-/* One some machines not all possible comparisons are defined, but you can
- convert an invalid comparison into a valid one. For example, the Alpha does
- not have a `GT' comparison, but you can use an `LT' comparison instead and
- swap the order of the operands.
-
- On such machines, define this macro to be a C statement to do any required
- conversions. CODE is the initial comparison code and OP0 and OP1 are the
- left and right operands of the comparison, respectively. You should modify
- CODE, OP0, and OP1 as required.
-
- GNU CC will not assume that the comparison resulting from this macro is
- valid but will see if the resulting insn matches a pattern in the `md' file.
-
- You need not define this macro if it would never change the comparison code
- or operands. */
-/* #define CANONICALIZE_COMPARISON(CODE, OP0, OP1) */
-
-/* A C expression whose value is one if it is always safe to reverse a
- comparison whose mode is MODE. If `SELECT_CC_MODE' can ever return MODE for
- a floating-point inequality comparison, then `REVERSIBLE_CC_MODE (MODE)'
- must be zero.
-
- You need not define this macro if it would always returns zero or if the
- floating-point format is anything other than `IEEE_FLOAT_FORMAT'. For
- example, here is the definition used on the Sparc, where floating-point
- inequality comparisons are always given `CCFPEmode':
-
- #define REVERSIBLE_CC_MODE(MODE) ((MODE) != CCFPEmode) */
-/* #define REVERSIBLE_CC_MODE(MODE) */
-
-\f
-/* Describing Relative Costs of Operations */
-
-/* A part of a C `switch' statement that describes the relative costs of
- constant RTL expressions. It must contain `case' labels for expression
- codes `const_int', `const', `symbol_ref', `label_ref' and `const_double'.
- Each case must ultimately reach a `return' statement to return the relative
- cost of the use of that kind of constant value in an expression. The cost
- may depend on the precise value of the constant, which is available for
- examination in X, and the rtx code of the expression in which it is
- contained, found in OUTER_CODE.
-
- CODE is the expression code--redundant, since it can be obtained with
- `GET_CODE (X)'. */
-
-/* On the d30v, consider operatnds that fit in a short instruction very
- cheap. However, at this time, it causes cse to generate incorrect
- code, so disable it for now. */
-#if 0
-#define CONST_COSTS(X, CODE, OUTER_CODE) \
- case CONST_INT: \
- if (IN_RANGE_P (INTVAL (X), 0, 31)) \
- return 0; \
- else if ((OUTER_CODE) == LEU && (OUTER_CODE) == LTU \
- && (OUTER_CODE) == GEU && (OUTER_CODE) == GTU) \
- return IN_RANGE_P (INTVAL (X), 32, 63) ? 0 : COSTS_N_INSNS (2); \
- else \
- return IN_RANGE_P (INTVAL (X), -31, -1) ? 0 : COSTS_N_INSNS (2); \
- case SYMBOL_REF: \
- case LABEL_REF: \
- case CONST: \
- return COSTS_N_INSNS (2); \
- case CONST_DOUBLE: \
- return COSTS_N_INSNS ((GET_MODE (X) == SFmode) ? 2 : 4);
-#else
-#define CONST_COSTS(X, CODE, OUTER_CODE)
-#endif
-
-/* Like `CONST_COSTS' but applies to nonconstant RTL expressions. This can be
- used, for example, to indicate how costly a multiply instruction is. In
- writing this macro, you can use the construct `COSTS_N_INSNS (N)' to specify
- a cost equal to N fast instructions. OUTER_CODE is the code of the
- expression in which X is contained.
-
- This macro is optional; do not define it if the default cost assumptions are
- adequate for the target machine. */
-#define RTX_COSTS(X, CODE, OUTER_CODE) \
- case MULT: \
- return COSTS_N_INSNS ((GET_CODE (XEXP (x, 1)) == CONST_INT \
- && exact_log2 (INTVAL (XEXP (x, 1))) >= 0) \
- ? 1 : 2);
-
-/* An expression giving the cost of an addressing mode that contains ADDRESS.
- If not defined, the cost is computed from the ADDRESS expression and the
- `CONST_COSTS' values.
-
- For most CISC machines, the default cost is a good approximation of the true
- cost of the addressing mode. However, on RISC machines, all instructions
- normally have the same length and execution time. Hence all addresses will
- have equal costs.
-
- In cases where more than one form of an address is known, the form with the
- lowest cost will be used. If multiple forms have the same, lowest, cost,
- the one that is the most complex will be used.
-
- For example, suppose an address that is equal to the sum of a register and a
- constant is used twice in the same basic block. When this macro is not
- defined, the address will be computed in a register and memory references
- will be indirect through that register. On machines where the cost of the
- addressing mode containing the sum is no higher than that of a simple
- indirect reference, this will produce an additional instruction and possibly
- require an additional register. Proper specification of this macro
- eliminates this overhead for such machines.
-
- Similar use of this macro is made in strength reduction of loops.
-
- ADDRESS need not be valid as an address. In such a case, the cost is not
- relevant and can be any value; invalid addresses need not be assigned a
- different cost.
-
- On machines where an address involving more than one register is as cheap as
- an address computation involving only one register, defining `ADDRESS_COST'
- to reflect this can cause two registers to be live over a region of code
- where only one would have been if `ADDRESS_COST' were not defined in that
- manner. This effect should be considered in the definition of this macro.
- Equivalent costs should probably only be given to addresses with different
- numbers of registers on machines with lots of registers.
-
- This macro will normally either not be defined or be defined as a constant. */
-#define ADDRESS_COST(ADDRESS) 0
-
-/* A C expression for the cost of moving data from a register in class FROM to
- one in class TO. The classes are expressed using the enumeration values
- such as `GENERAL_REGS'. A value of 4 is the default; other values are
- interpreted relative to that.
-
- It is not required that the cost always equal 2 when FROM is the same as TO;
- on some machines it is expensive to move between registers if they are not
- general registers.
-
- If reload sees an insn consisting of a single `set' between two hard
- registers, and if `REGISTER_MOVE_COST' applied to their classes returns a
- value of 2, reload does not check to ensure that the constraints of the insn
- are met. Setting a cost of other than 2 will allow reload to verify that
- the constraints are met. You should do this if the `movM' pattern's
- constraints do not allow such copying. */
-
-#define REGISTER_MOVE_COST(MODE, FROM, TO) \
- (((FROM) != GPR_REGS && (FROM) != EVEN_REGS \
- && (TO) != GPR_REGS && (TO) != EVEN_REGS) ? 4 : 2)
-
-/* A C expression for the cost of moving data of mode M between a register and
- memory. A value of 2 is the default; this cost is relative to those in
- `REGISTER_MOVE_COST'.
-
- If moving between registers and memory is more expensive than between two
- registers, you should define this macro to express the relative cost. */
-#define MEMORY_MOVE_COST(M,C,I) 4
-
-/* A C expression for the cost of a branch instruction. A value of 1 is the
- default; other values are interpreted relative to that. */
-
-#define BRANCH_COST d30v_branch_cost
-
-#define D30V_DEFAULT_BRANCH_COST 2
-
-/* Values of the -mbranch-cost=n string. */
-extern int d30v_branch_cost;
-extern const char *d30v_branch_cost_string;
-
-/* Here are additional macros which do not specify precise relative costs, but
- only that certain actions are more expensive than GNU CC would ordinarily
- expect. */
-
-/* Define this macro as a C expression which is nonzero if accessing less than
- a word of memory (i.e. a `char' or a `short') is no faster than accessing a
- word of memory, i.e., if such access require more than one instruction or if
- there is no difference in cost between byte and (aligned) word loads.
-
- When this macro is not defined, the compiler will access a field by finding
- the smallest containing object; when it is defined, a fullword load will be
- used if alignment permits. Unless bytes accesses are faster than word
- accesses, using word accesses is preferable since it may eliminate
- subsequent memory access if subsequent accesses occur to other fields in the
- same word of the structure, but to different bytes. */
-#define SLOW_BYTE_ACCESS 1
-
-/* Define this macro to be the value 1 if unaligned accesses have a cost many
- times greater than aligned accesses, for example if they are emulated in a
- trap handler.
-
- When this macro is non-zero, the compiler will act as if `STRICT_ALIGNMENT'
- were non-zero when generating code for block moves. This can cause
- significantly more instructions to be produced. Therefore, do not set this
- macro non-zero if unaligned accesses only add a cycle or two to the time for
- a memory access.
-
- If the value of this macro is always zero, it need not be defined. */
-/* #define SLOW_UNALIGNED_ACCESS */
-
-/* Define this macro to inhibit strength reduction of memory addresses. (On
- some machines, such strength reduction seems to do harm rather than good.) */
-/* #define DONT_REDUCE_ADDR */
-
-/* The number of scalar move insns which should be generated instead of a
- string move insn or a library call. Increasing the value will always make
- code faster, but eventually incurs high cost in increased code size.
-
- If you don't define this, a reasonable default is used. */
-/* #define MOVE_RATIO */
-
-/* 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. */
-#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. */
-/* #define NO_RECURSIVE_FUNCTION_CSE */
-
-\f
-/* Dividing the output into sections. */
-
-/* A C expression whose value is a string containing the assembler operation
- that should precede instructions and read-only data. Normally `".text"' is
- right. */
-#define TEXT_SECTION_ASM_OP "\t.text"
-
-/* A C expression whose value is a string containing the assembler operation to
- identify the following data as writable initialized data. Normally
- `".data"' is right. */
-#define DATA_SECTION_ASM_OP "\t.data"
-
-/* if defined, a C expression whose value is a string containing the assembler
- operation to identify the following data as shared data. If not defined,
- `DATA_SECTION_ASM_OP' will be used. */
-/* #define SHARED_SECTION_ASM_OP */
-
-/* If defined, a C expression whose value is a string containing the
- assembler operation to identify the following data as
- uninitialized global data. If not defined, and neither
- `ASM_OUTPUT_BSS' nor `ASM_OUTPUT_ALIGNED_BSS' are defined,
- uninitialized global data will be output in the data section if
- `-fno-common' is passed, otherwise `ASM_OUTPUT_COMMON' will be
- used. */
-#define BSS_SECTION_ASM_OP "\t.bss"
-
-/* If defined, a C expression whose value is a string containing the
- assembler operation to identify the following data as
- uninitialized global shared data. If not defined, and
- `BSS_SECTION_ASM_OP' is, the latter will be used. */
-/* #define SHARED_BSS_SECTION_ASM_OP */
-
-/* A list of names for sections other than the standard two, which are
- `in_text' and `in_data'. You need not define this macro on a system with no
- other sections (that GCC needs to use).
-
- Defined in svr4.h. */
-/* #define EXTRA_SECTIONS */
-
-/* One or more functions to be defined in `varasm.c'. These functions should
- do jobs analogous to those of `text_section' and `data_section', for your
- additional sections. Do not define this macro if you do not define
- `EXTRA_SECTIONS'.
-
- Defined in svr4.h. */
-/* #define EXTRA_SECTION_FUNCTIONS */
-
-/* On most machines, read-only variables, constants, and jump tables are placed
- in the text section. If this is not the case on your machine, this macro
- should be defined to be the name of a function (either `data_section' or a
- function defined in `EXTRA_SECTIONS') that switches to the section to be
- used for read-only items.
-
- If these items should be placed in the text section, this macro should not
- be defined. */
-/* #define READONLY_DATA_SECTION */
-
-/* A C statement or statements to switch to the appropriate section for output
- of EXP. You can assume that EXP is either a `VAR_DECL' node or a constant
- of some sort. RELOC indicates whether the initial value of EXP requires
- link-time relocations. Select the section by calling `text_section' or one
- of the alternatives for other sections.
-
- Do not define this macro if you put all read-only variables and constants in
- the read-only data section (usually the text section).
-
- Defined in svr4.h. */
-/* #define SELECT_SECTION(EXP, RELOC, ALIGN) */
-
-/* A C statement or statements to switch to the appropriate section for output
- of RTX in mode MODE. You can assume that RTX is some kind of constant in
- RTL. The argument MODE is redundant except in the case of a `const_int'
- rtx. Select the section by calling `text_section' or one of the
- alternatives for other sections.
-
- Do not define this macro if you put all constants in the read-only data
- section.
-
- Defined in svr4.h. */
-/* #define SELECT_RTX_SECTION(MODE, RTX, ALIGN) */
-
-/* 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
- has been created and stored in `DECL_RTL (DECL)'. 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 record 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). */
-/* #define ENCODE_SECTION_INFO(DECL) */
-
-/* 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) */
-
-/* A C statement to build up a unique section name, expressed as a
- STRING_CST node, and assign it to `DECL_SECTION_NAME (DECL)'.
- RELOC indicates whether the initial value of EXP requires
- link-time relocations. If you do not define this macro, GNU CC
- will use the symbol name prefixed by `.' as the section name.
-
- Defined in svr4.h. */
-/* #define UNIQUE_SECTION(DECL, RELOC) */
-
-\f
-/* Position Independent Code. */
-
-/* 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 */
-
-/* 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. */
-/* #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 */
-
-/* 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) */
-
-\f
-/* The Overall Framework of an Assembler File. */
-
-/* A C expression which outputs to the stdio stream STREAM some appropriate
- text to go at the start of an assembler file.
-
- Normally this macro is defined to output a line containing `#NO_APP', which
- is a comment that has no effect on most assemblers but tells the GNU
- assembler that it can save time by not checking for certain assembler
- constructs.
-
- On systems that use SDB, it is necessary to output certain commands; see
- `attasm.h'.
-
- Defined in svr4.h. */
-
-/* #define ASM_FILE_START(STREAM) \
- output_file_directive ((STREAM), main_input_filename) */
-
-/* A C expression which outputs to the stdio stream STREAM some appropriate
- text to go at the end of an assembler file.
-
- If this macro is not defined, the default is to output nothing special at
- the end of the file. Most systems don't require any definition.
-
- On systems that use SDB, it is necessary to output certain commands; see
- `attasm.h'.
-
- Defined in svr4.h. */
-/* #define ASM_FILE_END(STREAM) */
-
-/* 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 ";"
-
-/* A C string constant for text to be output before each `asm' statement or
- group of consecutive ones. Normally this is `"#APP"', which is a comment
- that has no effect on most assemblers but tells the GNU assembler that it
- must check the lines that follow for all valid assembler constructs. */
-#define ASM_APP_ON "#APP\n"
-
-/* A C string constant for text to be output after each `asm' statement or
- group of consecutive ones. Normally this is `"#NO_APP"', which tells the
- GNU assembler to resume making the time-saving assumptions that are valid
- for ordinary compiler output. */
-#define ASM_APP_OFF "#NO_APP\n"
-
-/* A C statement to output COFF information or DWARF debugging information
- which indicates that filename NAME is the current source file to the stdio
- stream STREAM.
-
- This macro need not be defined if the standard form of output for the file
- format in use is appropriate. */
-/* #define ASM_OUTPUT_SOURCE_FILENAME(STREAM, NAME) */
-
-/* A C statement to output DBX or SDB debugging information before code for
- line number LINE of the current source file to the stdio stream STREAM.
-
- This macro need not be defined if the standard form of debugging information
- for the debugger in use is appropriate.
-
- Defined in svr4.h. */
-/* #define ASM_OUTPUT_SOURCE_LINE(STREAM, LINE) */
-
-/* A C statement to output something to the assembler file to handle a `#ident'
- directive containing the text STRING. If this macro is not defined, nothing
- is output for a `#ident' directive.
-
- Defined in svr4.h. */
-/* #define ASM_OUTPUT_IDENT(STREAM, STRING) */
-
-/* A C statement to output any assembler statements which are required to
- precede any Objective C object definitions or message sending. The
- statement is executed only when compiling an Objective C program. */
-/* #define OBJC_PROLOGUE */
-
-\f
-/* Output of Data. */
-
-/* A C statement to output to the stdio stream STREAM an assembler instruction
- to assemble a string constant containing the LEN bytes at PTR. PTR will be
- a C expression of type `char *' and LEN a C expression of type `int'.
-
- If the assembler has a `.ascii' pseudo-op as found in the Berkeley Unix
- assembler, do not define the macro `ASM_OUTPUT_ASCII'.
-
- Defined in svr4.h. */
-/* #define ASM_OUTPUT_ASCII(STREAM, PTR, LEN) */
-
-/* You may define this macro as a C expression. You should define the
- expression to have a non-zero value if GNU CC should output the
- constant pool for a function before the code for the function, or
- a zero value if GNU CC should output the constant pool after the
- function. If you do not define this macro, the usual case, GNU CC
- will output the constant pool before the function. */
-/* #define CONSTANT_POOL_BEFORE_FUNCTION */
-
-/* A C statement to output assembler commands to define the start of the
- constant pool for a function. FUNNAME is a string giving the name of the
- function. Should the return type of the function be required, it can be
- obtained via FUNDECL. SIZE is the size, in bytes, of the constant pool that
- will be written immediately after this call.
-
- If no constant-pool prefix is required, the usual case, this macro need not
- be defined. */
-/* #define ASM_OUTPUT_POOL_PROLOGUE(FILE FUNNAME FUNDECL SIZE) */
-
-/* A C statement (with or without semicolon) to output a constant in the
- constant pool, if it needs special treatment. (This macro need not do
- anything for RTL expressions that can be output normally.)
-
- The argument FILE is the standard I/O stream to output the assembler code
- on. X is the RTL expression for the constant to output, and MODE is the
- machine mode (in case X is a `const_int'). ALIGN is the required alignment
- for the value X; you should output an assembler directive to force this much
- alignment.
-
- The argument LABELNO is a number to use in an internal label for the address
- of this pool entry. The definition of this macro is responsible for
- outputting the label definition at the proper place. Here is how to do
- this:
-
- ASM_OUTPUT_INTERNAL_LABEL (FILE, "LC", LABELNO);
-
- When you output a pool entry specially, you should end with a `goto' to the
- label JUMPTO. This will prevent the same pool entry from being output a
- second time in the usual manner.
-
- You need not define this macro if it would do nothing. */
-/* #define ASM_OUTPUT_SPECIAL_POOL_ENTRY(FILE, X, MODE, ALIGN, LABELNO, JUMPTO) */
-
-/* Define this macro as a C expression which is nonzero if the constant EXP, of
- type `tree', should be output after the code for a function. The compiler
- will normally output all constants before the function; you need not define
- this macro if this is OK. */
-/* #define CONSTANT_AFTER_FUNCTION_P(EXP) */
-
-/* A C statement to output assembler commands to at the end of the constant
- pool for a function. FUNNAME is a string giving the name of the function.
- Should the return type of the function be required, you can obtain it via
- FUNDECL. SIZE is the size, in bytes, of the constant pool that GNU CC wrote
- immediately before this call.
-
- If no constant-pool epilogue is required, the usual case, you need not
- define this macro. */
-/* #define ASM_OUTPUT_POOL_EPILOGUE (FILE FUNNAME FUNDECL SIZE) */
-
-/* Define this macro as a C expression which is nonzero if C is used as a
- logical line separator by the assembler.
-
- If you do not define this macro, the default is that only the character `;'
- is treated as a logical line separator. */
-/* #define IS_ASM_LOGICAL_LINE_SEPARATOR(C) */
-
-/* These macros are provided by `real.h' for writing the definitions of
- `ASM_OUTPUT_DOUBLE' and the like: */
-
-/* These translate X, of type `REAL_VALUE_TYPE', to the target's floating point
- representation, and store its bit pattern in the array of `long int' whose
- address is L. The number of elements in the output array is determined by
- the size of the desired target floating point data type: 32 bits of it go in
- each `long int' array element. Each array element holds 32 bits of the
- result, even if `long int' is wider than 32 bits on the host machine.
-
- The array element values are designed so that you can print them out using
- `fprintf' in the order they should appear in the target machine's memory. */
-/* #define REAL_VALUE_TO_TARGET_SINGLE(X, L) */
-/* #define REAL_VALUE_TO_TARGET_DOUBLE(X, L) */
-/* #define REAL_VALUE_TO_TARGET_LONG_DOUBLE(X, L) */
-
-/* This macro converts X, of type `REAL_VALUE_TYPE', to a decimal number and
- stores it as a string into STRING. You must pass, as STRING, the address of
- a long enough block of space to hold the result.
-
- The argument FORMAT is a `printf'-specification that serves as a suggestion
- for how to format the output string. */
-/* #define REAL_VALUE_TO_DECIMAL(X, FORMAT, STRING) */
-
-\f
-/* Output of Uninitialized Variables. */
-
-/* A C statement (sans semicolon) to output to the stdio stream STREAM the
- assembler definition of a common-label named NAME whose size is SIZE bytes.
- The variable ROUNDED is the size rounded up to whatever alignment the caller
- wants.
-
- Use the expression `assemble_name (STREAM, NAME)' to output the name itself;
- before and after that, output the additional assembler syntax for defining
- the name, and a newline.
-
- This macro controls how the assembler definitions of uninitialized global
- variables are output. */
-/* #define ASM_OUTPUT_COMMON(STREAM, NAME, SIZE, ROUNDED) */
-
-/* Like `ASM_OUTPUT_COMMON' except takes the required alignment as a separate,
- explicit argument. If you define this macro, it is used in place of
- `ASM_OUTPUT_COMMON', and gives you more flexibility in handling the required
- alignment of the variable. The alignment is specified as the number of
- bits.
-
- Defined in svr4.h. */
-/* #define ASM_OUTPUT_ALIGNED_COMMON(STREAM, NAME, SIZE, ALIGNMENT) */
-
-/* Like ASM_OUTPUT_ALIGNED_COMMON except that it takes an additional argument -
- the DECL of the variable to be output, if there is one. This macro can be
- called with DECL == NULL_TREE. If you define this macro, it is used in
- place of both ASM_OUTPUT_COMMON and ASM_OUTPUT_ALIGNED_COMMON, and gives you
- more flexibility in handling the destination of the variable. */
-/* #define ASM_OUTPUT_DECL_COMMON (STREAM, DECL, NAME, SIZE, ALIGNMENT) */
-
-/* If defined, it is similar to `ASM_OUTPUT_COMMON', except that it is used
- when NAME is shared. If not defined, `ASM_OUTPUT_COMMON' will be used. */
-/* #define ASM_OUTPUT_SHARED_COMMON(STREAM, NAME, SIZE, ROUNDED) */
-
-/* A C statement (sans semicolon) to output to the stdio stream STREAM the
- assembler definition of uninitialized global DECL named NAME whose size is
- SIZE bytes. The variable ROUNDED is the size rounded up to whatever
- alignment the caller wants.
-
- Try to use function `asm_output_bss' defined in `varasm.c' when defining
- this macro. If unable, use the expression `assemble_name (STREAM, NAME)' to
- output the name itself; before and after that, output the additional
- assembler syntax for defining the name, and a newline.
-
- This macro controls how the assembler definitions of uninitialized global
- variables are output. This macro exists to properly support languages like
- `c++' which do not have `common' data. However, this macro currently is not
- defined for all targets. If this macro and `ASM_OUTPUT_ALIGNED_BSS' are not
- defined then `ASM_OUTPUT_COMMON' or `ASM_OUTPUT_ALIGNED_COMMON' or
- `ASM_OUTPUT_DECL_COMMON' is used. */
-/* #define ASM_OUTPUT_BSS(STREAM, DECL, NAME, SIZE, ROUNDED) */
-
-/* Like `ASM_OUTPUT_BSS' except takes the required alignment as a separate,
- explicit argument. If you define this macro, it is used in place of
- `ASM_OUTPUT_BSS', and gives you more flexibility in handling the required
- alignment of the variable. The alignment is specified as the number of
- bits.
-
- Try to use function `asm_output_aligned_bss' defined in file `varasm.c' when
- defining this macro. */
-/* #define ASM_OUTPUT_ALIGNED_BSS(STREAM, DECL, NAME, SIZE, ALIGNMENT) */
-
-/* If defined, it is similar to `ASM_OUTPUT_BSS', except that it is used when
- NAME is shared. If not defined, `ASM_OUTPUT_BSS' will be used. */
-/* #define ASM_OUTPUT_SHARED_BSS(STREAM, DECL, NAME, SIZE, ROUNDED) */
-
-/* A C statement (sans semicolon) to output to the stdio stream STREAM the
- assembler definition of a local-common-label named NAME whose size is SIZE
- bytes. The variable ROUNDED is the size rounded up to whatever alignment
- the caller wants.
-
- Use the expression `assemble_name (STREAM, NAME)' to output the name itself;
- before and after that, output the additional assembler syntax for defining
- the name, and a newline.
-
- This macro controls how the assembler definitions of uninitialized static
- variables are output. */
-/* #define ASM_OUTPUT_LOCAL(STREAM, NAME, SIZE, ROUNDED) */
-
-/* Like `ASM_OUTPUT_LOCAL' except takes the required alignment as a separate,
- explicit argument. If you define this macro, it is used in place of
- `ASM_OUTPUT_LOCAL', and gives you more flexibility in handling the required
- alignment of the variable. The alignment is specified as the number of
- bits.
-
- Defined in svr4.h. */
-/* #define ASM_OUTPUT_ALIGNED_LOCAL(STREAM, NAME, SIZE, ALIGNMENT) */
-
-/* Like `ASM_OUTPUT_ALIGNED_LOCAL' except that it takes an additional
- parameter - the DECL of variable to be output, if there is one.
- This macro can be called with DECL == NULL_TREE. If you define
- this macro, it is used in place of `ASM_OUTPUT_LOCAL' and
- `ASM_OUTPUT_ALIGNED_LOCAL', and gives you more flexibility in
- handling the destination of the variable. */
-/* #define ASM_OUTPUT_DECL_LOCAL(STREAM, DECL, NAME, SIZE, ALIGNMENT) */
-
-/* If defined, it is similar to `ASM_OUTPUT_LOCAL', except that it is used when
- NAME is shared. If not defined, `ASM_OUTPUT_LOCAL' will be used. */
-/* #define ASM_OUTPUT_SHARED_LOCAL (STREAM, NAME, SIZE, ROUNDED) */
-
-\f
-/* Output and Generation of Labels. */
-
-/* A C statement (sans semicolon) to output to the stdio stream STREAM the
- assembler definition of a label named NAME. Use the expression
- `assemble_name (STREAM, NAME)' to output the name itself; before and after
- that, output the additional assembler syntax for defining the name, and a
- newline. */
-
-#define ASM_OUTPUT_LABEL(STREAM, NAME) \
-do { \
- assemble_name (STREAM, NAME); \
- fputs (":\n", STREAM); \
-} while (0)
-
-/* A C statement (sans semicolon) to output to the stdio stream STREAM any text
- necessary for declaring the name NAME of a function which is being defined.
- This macro is responsible for outputting the label definition (perhaps using
- `ASM_OUTPUT_LABEL'). The argument DECL is the `FUNCTION_DECL' tree node
- representing the function.
-
- If this macro is not defined, then the function name is defined in the usual
- manner as a label (by means of `ASM_OUTPUT_LABEL').
-
- Defined in svr4.h. */
-/* #define ASM_DECLARE_FUNCTION_NAME(STREAM, NAME, DECL) */
-
-/* A C statement (sans semicolon) to output to the stdio stream STREAM any text
- necessary for declaring the size of a function which is being defined. The
- argument NAME is the name of the function. The argument DECL is the
- `FUNCTION_DECL' tree node representing the function.
-
- If this macro is not defined, then the function size is not defined.
-
- Defined in svr4.h. */
-/* #define ASM_DECLARE_FUNCTION_SIZE(STREAM, NAME, DECL) */
-
-/* A C statement (sans semicolon) to output to the stdio stream STREAM any text
- necessary for declaring the name NAME of an initialized variable which is
- being defined. This macro must output the label definition (perhaps using
- `ASM_OUTPUT_LABEL'). The argument DECL is the `VAR_DECL' tree node
- representing the variable.
-
- If this macro is not defined, then the variable name is defined in the usual
- manner as a label (by means of `ASM_OUTPUT_LABEL').
-
- Defined in svr4.h. */
-/* #define ASM_DECLARE_OBJECT_NAME(STREAM, NAME, DECL) */
-
-/* A C statement (sans semicolon) to finish up declaring a variable name once
- the compiler has processed its initializer fully and thus has had a chance
- to determine the size of an array when controlled by an initializer. This
- is used on systems where it's necessary to declare something about the size
- of the object.
-
- If you don't define this macro, that is equivalent to defining it to do
- nothing.
-
- Defined in svr4.h. */
-/* #define ASM_FINISH_DECLARE_OBJECT(STREAM, DECL, TOPLEVEL, ATEND) */
-
-/* A C statement (sans semicolon) to output to the stdio stream STREAM some
- commands that will make the label NAME global; that is, available for
- reference from other files. Use the expression `assemble_name (STREAM,
- NAME)' to output the name itself; before and after that, output the
- additional assembler syntax for making that name global, and a newline. */
-
-#define ASM_GLOBALIZE_LABEL(STREAM,NAME) \
-do { \
- fputs ("\t.globl ", STREAM); \
- assemble_name (STREAM, NAME); \
- fputs ("\n", STREAM); \
-} while (0)
-
-/* A C statement (sans semicolon) to output to the stdio stream STREAM some
- commands that will make the label NAME weak; that is, available for
- reference from other files but only used if no other definition is
- available. Use the expression `assemble_name (STREAM, NAME)' to output the
- name itself; before and after that, output the additional assembler syntax
- for making that name weak, and a newline.
-
- If you don't define this macro, GNU CC will not support weak symbols and you
- should not define the `SUPPORTS_WEAK' macro.
-
- Defined in svr4.h. */
-/* #define ASM_WEAKEN_LABEL */
-
-/* A C expression which evaluates to true if the target supports weak symbols.
-
- If you don't define this macro, `defaults.h' provides a default definition.
- If `ASM_WEAKEN_LABEL' is defined, the default definition is `1'; otherwise,
- it is `0'. Define this macro if you want to control weak symbol support
- with a compiler flag such as `-melf'. */
-/* #define SUPPORTS_WEAK */
-
-/* A C statement (sans semicolon) to mark DECL to be emitted as a
- public symbol such that extra copies in multiple translation units
- will be discarded by the linker. Define this macro if your object
- file format provides support for this concept, such as the `COMDAT'
- section flags in the Microsoft Windows PE/COFF format, and this
- support requires changes to DECL, such as putting it in a separate
- section.
-
- Defined in svr4.h. */
-/* #define MAKE_DECL_ONE_ONLY */
-
-/* A C expression which evaluates to true if the target supports one-only
- semantics.
-
- If you don't define this macro, `varasm.c' provides a default definition.
- If `MAKE_DECL_ONE_ONLY' is defined, the default definition is `1';
- otherwise, it is `0'. Define this macro if you want to control one-only
- symbol support with a compiler flag, or if setting the `DECL_ONE_ONLY' flag
- is enough to mark a declaration to be emitted as one-only. */
-/* #define SUPPORTS_ONE_ONLY */
-
-/* A C statement (sans semicolon) to output to the stdio stream STREAM any text
- necessary for declaring the name of an external symbol named NAME which is
- referenced in this compilation but not defined. The value of DECL is the
- tree node for the declaration.
-
- This macro need not be defined if it does not need to output anything. The
- GNU assembler and most Unix assemblers don't require anything. */
-/* #define ASM_OUTPUT_EXTERNAL(STREAM, DECL, NAME) */
-
-/* A C statement (sans semicolon) to output on STREAM 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'.
-
- This macro need not be defined if it does not need to output anything. The
- GNU assembler and most Unix assemblers don't require anything.
-
- Defined in svr4.h. */
-/* #define ASM_OUTPUT_EXTERNAL_LIBCALL(STREAM, SYMREF) */
-
-/* A C statement (sans semicolon) to output to the stdio stream STREAM a
- reference in assembler syntax to a label named NAME. This should add `_' to
- the front of the name, if that is customary on your operating system, as it
- is in most Berkeley Unix systems. This macro is used in `assemble_name'. */
-/* #define ASM_OUTPUT_LABELREF(STREAM, NAME) */
-
-/* A C statement to output to the stdio stream STREAM a label whose name is
- made from the string PREFIX and the number NUM.
-
- It is absolutely essential that these labels be distinct from the labels
- used for user-level functions and variables. Otherwise, certain programs
- will have name conflicts with internal labels.
-
- It is desirable to exclude internal labels from the symbol table of the
- object file. Most assemblers have a naming convention for labels that
- should be excluded; on many systems, the letter `L' at the beginning of a
- label has this effect. You should find out what convention your system
- uses, and follow it.
-
- The usual definition of this macro is as follows:
-
- fprintf (STREAM, "L%s%d:\n", PREFIX, NUM)
-
- Defined in svr4.h. */
-/* #define ASM_OUTPUT_INTERNAL_LABEL(STREAM, PREFIX, NUM) */
-
-/* A C statement to store into the string STRING a label whose name is made
- from the string PREFIX and the number NUM.
-
- This string, when output subsequently by `assemble_name', should produce the
- output that `ASM_OUTPUT_INTERNAL_LABEL' would produce with the same PREFIX
- and NUM.
-
- If the string begins with `*', then `assemble_name' will output the rest of
- the string unchanged. It is often convenient for
- `ASM_GENERATE_INTERNAL_LABEL' to use `*' in this way. If the string doesn't
- start with `*', then `ASM_OUTPUT_LABELREF' gets to output the string, and
- may change it. (Of course, `ASM_OUTPUT_LABELREF' is also part of your
- machine description, so you should know what it does on your machine.)
-
- Defined in svr4.h. */
-
-/*
-#define ASM_GENERATE_INTERNAL_LABEL(LABEL, PREFIX, NUM) \
-do { \
- sprintf (LABEL, "*.%s%d", PREFIX, NUM); \
-} while (0)
-*/
-
-/* A C expression to assign to OUTVAR (which is a variable of type `char *') a
- newly allocated string made from the string NAME and the number NUMBER, with
- some suitable punctuation added. Use `alloca' to get space for the string.
-
- The string will be used as an argument to `ASM_OUTPUT_LABELREF' to produce
- an assembler label for an internal static variable whose name is NAME.
- Therefore, the string must be such as to result in valid assembler code.
- The argument NUMBER is different each time this macro is executed; it
- prevents conflicts between similarly-named internal static variables in
- different scopes.
-
- Ideally this string should not be a valid C identifier, to prevent any
- conflict with the user's own symbols. Most assemblers allow periods or
- percent signs in assembler symbols; putting at least one of these between
- the name and the number will suffice. */
-
-#define ASM_FORMAT_PRIVATE_NAME(OUTVAR, NAME, NUMBER) \
-do { \
- (OUTVAR) = (char *) alloca (strlen ((NAME)) + 12); \
- sprintf ((OUTVAR), "%s.%ld", (NAME), (long)(NUMBER)); \
-} while (0)
-
-/* A C statement to output to the stdio stream STREAM assembler code which
- defines (equates) the symbol NAME to have the value VALUE.
-
- If SET_ASM_OP is defined, a default definition is provided which is correct
- for most systems.
-
- Defined in svr4.h. */
-/* #define ASM_OUTPUT_DEF(STREAM, NAME, VALUE) */
-
-/* A C statement to output to the stdio stream STREAM assembler code which
- defines (equates) the weak symbol NAME to have the value VALUE.
-
- Define this macro if the target only supports weak aliases; define
- ASM_OUTPUT_DEF instead if possible. */
-/* #define ASM_OUTPUT_WEAK_ALIAS (STREAM, NAME, VALUE) */
-
-/* Define this macro to override the default assembler names used for Objective
- C methods.
-
- The default name is a unique method number followed by the name of the class
- (e.g. `_1_Foo'). For methods in categories, the name of the category is
- also included in the assembler name (e.g. `_1_Foo_Bar').
-
- These names are safe on most systems, but make debugging difficult since the
- method's selector is not present in the name. Therefore, particular systems
- define other ways of computing names.
-
- BUF is an expression of type `char *' which gives you a buffer in which to
- store the name; its length is as long as CLASS_NAME, CAT_NAME and SEL_NAME
- put together, plus 50 characters extra.
-
- The argument IS_INST specifies whether the method is an instance method or a
- class method; CLASS_NAME is the name of the class; CAT_NAME is the name of
- the category (or NULL if the method is not in a category); and SEL_NAME is
- the name of the selector.
-
- On systems where the assembler can handle quoted names, you can use this
- macro to provide more human-readable names. */
-/* #define OBJC_GEN_METHOD_LABEL(BUF, IS_INST, CLASS_NAME, CAT_NAME, SEL_NAME) */
-
-\f
-/* Macros Controlling Initialization Routines. */
-
-/* If defined, a C string constant for the assembler operation to identify the
- following data as initialization code. If not defined, GNU CC will assume
- such a section does not exist. When you are using special sections for
- initialization and termination functions, this macro also controls how
- `crtstuff.c' and `libgcc2.c' arrange to run the initialization functions.
-
- Defined in svr4.h. */
-/* #define INIT_SECTION_ASM_OP */
-
-/* If defined, `main' will not call `__main' as described above. This macro
- should be defined for systems that control the contents of the init section
- on a symbol-by-symbol basis, such as OSF/1, and should not be defined
- explicitly for systems that support `INIT_SECTION_ASM_OP'. */
-/* #define HAS_INIT_SECTION */
-
-/* If defined, a C string constant for a switch that tells the linker that the
- following symbol is an initialization routine. */
-/* #define LD_INIT_SWITCH */
-
-/* If defined, a C string constant for a switch that tells the linker that the
- following symbol is a finalization routine. */
-/* #define LD_FINI_SWITCH */
-
-/* If defined, `main' will call `__main' despite the presence of
- `INIT_SECTION_ASM_OP'. This macro should be defined for systems where the
- init section is not actually run automatically, but is still useful for
- collecting the lists of constructors and destructors. */
-#define INVOKE__main
-
-/* If your system uses `collect2' as the means of processing constructors, then
- that program normally uses `nm' to scan an object file for constructor
- functions to be called. On certain kinds of systems, you can define these
- macros to make `collect2' work faster (and, in some cases, make it work at
- all): */
-
-/* Define this macro if the system uses COFF (Common Object File Format) object
- files, so that `collect2' can assume this format and scan object files
- directly for dynamic constructor/destructor functions. */
-/* #define OBJECT_FORMAT_COFF */
-
-/* Define this macro if the system uses ROSE format object files, so that
- `collect2' can assume this format and scan object files directly for dynamic
- constructor/destructor functions.
-
- These macros are effective only in a native compiler; `collect2' as
- part of a cross compiler always uses `nm' for the target machine. */
-/* #define OBJECT_FORMAT_ROSE */
-
-/* Define this macro if the system uses ELF format object files.
-
- Defined in svr4.h. */
-/* #define OBJECT_FORMAT_ELF */
-
-/* Define this macro as a C string constant containing the file name to use to
- execute `nm'. The default is to search the path normally for `nm'.
-
- If your system supports shared libraries and has a program to list the
- dynamic dependencies of a given library or executable, you can define these
- macros to enable support for running initialization and termination
- functions in shared libraries: */
-/* #define REAL_NM_FILE_NAME */
-
-/* Define this macro to a C string constant containing the name of the program
- which lists dynamic dependencies, like `"ldd"' under SunOS 4. */
-/* #define LDD_SUFFIX */
-
-/* Define this macro to be C code that extracts filenames from the output of
- the program denoted by `LDD_SUFFIX'. PTR is a variable of type `char *'
- that points to the beginning of a line of output from `LDD_SUFFIX'. If the
- line lists a dynamic dependency, the code must advance PTR to the beginning
- of the filename on that line. Otherwise, it must set PTR to `NULL'. */
-/* #define PARSE_LDD_OUTPUT (PTR) */
-
-\f
-/* Output of Assembler Instructions. */
-
-/* A C initializer containing the assembler's names for the machine registers,
- each one as a C string constant. This is what translates register numbers
- in the compiler into assembler language. */
-#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", \
- "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", \
- "r60", "r61", "link", "sp", \
- "ap", \
- "f0", "f1", "f2", "f3", \
- "s", "v", "va", "c", \
- "a0", "a1", \
- "psw", "bpsw", "pc", "bpc", \
- "dpsw", "dpc", "rpt_c", "rpt_s", \
- "rpt_e", "mod_s", "mod_e", "iba", \
- "eit_vb", "int_s", "int_m", \
-}
-
-/* If defined, a C initializer for an array of structures containing a name and
- a register number. This macro defines additional names for hard registers,
- thus allowing the `asm' option in declarations to refer to registers using
- alternate names. */
-#define ADDITIONAL_REGISTER_NAMES \
-{ \
- {"r62", GPR_LINK}, \
- {"r63", GPR_SP}, \
- {"f4", FLAG_SAT}, \
- {"f5", FLAG_OVERFLOW}, \
- {"f6", FLAG_ACC_OVER}, \
- {"f7", FLAG_CARRY}, \
- {"carry", FLAG_CARRY}, \
- {"borrow", FLAG_BORROW}, \
- {"b", FLAG_BORROW}, \
- {"cr0", CR_PSW}, \
- {"cr1", CR_BPSW}, \
- {"cr2", CR_PC}, \
- {"cr3", CR_BPC}, \
- {"cr4", CR_DPSW}, \
- {"cr5", CR_DPC}, \
- {"cr7", CR_RPT_C}, \
- {"cr8", CR_RPT_S}, \
- {"cr9", CR_RPT_E}, \
- {"cr10", CR_MOD_S}, \
- {"cr11", CR_MOD_E}, \
- {"cr14", CR_IBA}, \
- {"cr15", CR_EIT_VB}, \
- {"cr16", CR_INT_S}, \
- {"cr17", CR_INT_M} \
-}
-
-/* Define this macro if you are using an unusual assembler that requires
- different names for the machine instructions.
-
- The definition is a C statement or statements which output an assembler
- instruction opcode to the stdio stream STREAM. The macro-operand PTR is a
- variable of type `char *' which points to the opcode name in its "internal"
- form--the form that is written in the machine description. The definition
- should output the opcode name to STREAM, performing any translation you
- desire, and increment the variable PTR to point at the end of the opcode so
- that it will not be output twice.
-
- In fact, your macro definition may process less than the entire opcode name,
- or more than the opcode name; but if you want to process text that includes
- `%'-sequences to substitute operands, you must take care of the substitution
- yourself. Just be sure to increment PTR over whatever text should not be
- output normally.
-
- If you need to look at the operand values, they can be found as the elements
- of `recog_data.operand'.
-
- If the macro definition does nothing, the instruction is output in the usual
- way. */
-/* #define ASM_OUTPUT_OPCODE(STREAM, PTR) */
-
-/* If defined, a C statement to be executed just prior to the output of
- assembler code for INSN, to modify the extracted operands so they will be
- output differently.
-
- Here the argument OPVEC is the vector containing the operands extracted from
- INSN, and NOPERANDS is the number of elements of the vector which contain
- meaningful data for this insn. The contents of this vector are what will be
- used to convert the insn template into assembler code, so you can change the
- assembler output by changing the contents of the vector.
-
- This macro is useful when various assembler syntaxes share a single file of
- instruction patterns; by defining this macro differently, you can cause a
- large class of instructions to be output differently (such as with
- rearranged operands). Naturally, variations in assembler syntax affecting
- individual insn patterns ought to be handled by writing conditional output
- routines in those patterns.
-
- If this macro is not defined, it is equivalent to a null statement. */
-/* #define FINAL_PRESCAN_INSN(INSN, OPVEC, NOPERANDS) */
-
-/* If defined, `FINAL_PRESCAN_INSN' will be called on each
- `CODE_LABEL'. In that case, OPVEC will be a null pointer and
- NOPERANDS will be zero. */
-/* #define FINAL_PRESCAN_LABEL */
-
-/* A C compound statement to output to stdio stream STREAM the assembler syntax
- for an instruction operand X. X is an RTL expression.
-
- CODE is a value that can be used to specify one of several ways of printing
- the operand. It is used when identical operands must be printed differently
- depending on the context. CODE comes from the `%' specification that was
- used to request printing of the operand. If the specification was just
- `%DIGIT' then CODE is 0; if the specification was `%LTR DIGIT' then CODE is
- the ASCII code for LTR.
-
- If X is a register, this macro should print the register's name. The names
- can be found in an array `reg_names' whose type is `char *[]'. `reg_names'
- is initialized from `REGISTER_NAMES'.
-
- When the machine description has a specification `%PUNCT' (a `%' followed by
- a punctuation character), this macro is called with a null pointer for X and
- the punctuation character for CODE.
-
- Standard operand flags that are handled elsewhere:
- `=' Output a number unique to each instruction in the compilation.
- `a' Substitute an operand as if it were a memory reference.
- `c' Omit the syntax that indicates an immediate operand.
- `l' Substitute a LABEL_REF into a jump instruction.
- `n' Like %cDIGIT, except negate the value before printing.
-
- The d30v specific operand flags are:
- `.' Print r0.
- `f' Print a SF constant as an int.
- `s' Subtract 32 and negate.
- `A' Print accumulator number without an `a' in front of it.
- `B' Print bit offset for BSET, etc. instructions.
- `E' Print u if this is zero extend, nothing if this is sign extend.
- `F' Emit /{f,t,x}{f,t,x} for executing a false condition.
- `L' Print the lower half of a 64 bit item.
- `M' Print a memory reference for ld/st instructions.
- `R' Return appropriate cmp instruction for relational test.
- `S' Subtract 32.
- `T' Emit /{f,t,x}{f,t,x} for executing a true condition.
- `U' Print the upper half of a 64 bit item. */
-
-#define PRINT_OPERAND(STREAM, X, CODE) d30v_print_operand (STREAM, X, CODE)
-
-/* A C expression which evaluates to true if CODE is a valid punctuation
- character for use in the `PRINT_OPERAND' macro. If
- `PRINT_OPERAND_PUNCT_VALID_P' is not defined, it means that no punctuation
- characters (except for the standard one, `%') are used in this way. */
-
-#define PRINT_OPERAND_PUNCT_VALID_P(CODE) ((CODE) == '.' || (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 X. X
- 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. *Note Assembler Format::. */
-
-#define PRINT_OPERAND_ADDRESS(STREAM, X) d30v_print_operand_address (STREAM, X)
-
-/* A C statement, to be executed after all slot-filler instructions have been
- output. If necessary, call `dbr_sequence_length' to determine the number of
- slots filled in a sequence (zero if not currently outputting a sequence), to
- decide how many no-ops to output, or whatever.
-
- Don't define this macro if it has nothing to do, but it is helpful in
- reading assembly output if the extent of the delay sequence is made explicit
- (e.g. with white space).
-
- Note that output routines for instructions with delay slots must be prepared
- to deal with not being output as part of a sequence (i.e. when the
- scheduling pass is not run, or when no slot fillers could be found.) The
- variable `final_sequence' is null when not processing a sequence, otherwise
- it contains the `sequence' rtx being output. */
-/* #define DBR_OUTPUT_SEQEND(FILE) */
-
-/* If defined, C string expressions to be used for the `%R', `%L', `%U', and
- `%I' options of `asm_fprintf' (see `final.c'). These are useful when a
- single `md' file must support multiple assembler formats. In that case, the
- various `tm.h' files can define these macros differently.
-
- USER_LABEL_PREFIX is defined in svr4.h. */
-
-#define REGISTER_PREFIX "%"
-#define LOCAL_LABEL_PREFIX "."
-#define USER_LABEL_PREFIX ""
-#define IMMEDIATE_PREFIX ""
-
-/* If your target supports multiple dialects of assembler language (such as
- different opcodes), define this macro as a C expression that gives the
- numeric index of the assembler language dialect to use, with zero as the
- first variant.
-
- If this macro is defined, you may use `{option0|option1|option2...}'
- constructs in the output templates of patterns (*note Output Template::.) or
- in the first argument of `asm_fprintf'. This construct outputs `option0',
- `option1' or `option2', etc., if the value of `ASSEMBLER_DIALECT' is zero,
- one or two, etc. Any special characters within these strings retain their
- usual meaning.
-
- If you do not define this macro, the characters `{', `|' and `}' do not have
- any special meaning when used in templates or operands to `asm_fprintf'.
-
- Define the macros `REGISTER_PREFIX', `LOCAL_LABEL_PREFIX',
- `USER_LABEL_PREFIX' and `IMMEDIATE_PREFIX' if you can express the variations
- in assemble language syntax with that mechanism. Define `ASSEMBLER_DIALECT'
- and use the `{option0|option1}' syntax if the syntax variant are larger and
- involve such things as different opcodes or operand order. */
-/* #define ASSEMBLER_DIALECT */
-
-/* A C expression to output to STREAM some assembler code which will push hard
- register number REGNO onto the stack. The code need not be optimal, since
- this macro is used only when profiling. */
-/* #define ASM_OUTPUT_REG_PUSH (STREAM, REGNO) */
-
-/* A C expression to output to STREAM some assembler code which will pop hard
- register number REGNO off of the stack. The code need not be optimal, since
- this macro is used only when profiling. */
-/* #define ASM_OUTPUT_REG_POP (STREAM, REGNO) */
-
-\f
-/* Output of dispatch tables. */
-
-/* This macro should be provided on machines where the addresses in a dispatch
- table are relative to the table's own address.
-
- The definition should be a C statement to output to the stdio stream STREAM
- an assembler pseudo-instruction to generate a difference between two labels.
- VALUE and REL are the numbers of two internal labels. The definitions of
- these labels are output using `ASM_OUTPUT_INTERNAL_LABEL', and they must be
- printed in the same way here. For example,
-
- fprintf (STREAM, "\t.word L%d-L%d\n", VALUE, REL) */
-
-#define ASM_OUTPUT_ADDR_DIFF_ELT(STREAM, BODY, VALUE, REL) \
-fprintf (STREAM, "\t.word .L%d-.L%d\n", VALUE, REL)
-
-/* This macro should be provided on machines where the addresses in a dispatch
- table are absolute.
-
- The definition should be a C statement to output to the stdio stream STREAM
- an assembler pseudo-instruction to generate a reference to a label. VALUE
- is the number of an internal label whose definition is output using
- `ASM_OUTPUT_INTERNAL_LABEL'. For example,
-
- fprintf (STREAM, "\t.word L%d\n", VALUE) */
-
-#define ASM_OUTPUT_ADDR_VEC_ELT(STREAM, VALUE) \
-fprintf (STREAM, "\t.word .L%d\n", VALUE)
-
-/* Define this if the label before a jump-table needs to be output specially.
- The first three arguments are the same as for `ASM_OUTPUT_INTERNAL_LABEL';
- the fourth argument is the jump-table which follows (a `jump_insn'
- containing an `addr_vec' or `addr_diff_vec').
-
- This feature is used on system V to output a `swbeg' statement for the
- table.
-
- If this macro is not defined, these labels are output with
- `ASM_OUTPUT_INTERNAL_LABEL'.
-
- Defined in svr4.h. */
-/* #define ASM_OUTPUT_CASE_LABEL(STREAM, PREFIX, NUM, TABLE) */
-
-/* Define this if something special must be output at the end of a jump-table.
- The definition should be a C statement to be executed after the assembler
- code for the table is written. It should write the appropriate code to
- stdio stream STREAM. The argument TABLE is the jump-table insn, and NUM is
- the label-number of the preceding label.
-
- If this macro is not defined, nothing special is output at the end of the
- jump-table. */
-/* #define ASM_OUTPUT_CASE_END(STREAM, NUM, TABLE) */
-
-\f
-/* Assembler Commands for Exception Regions. */
-
-/* An rtx used to mask the return address found via RETURN_ADDR_RTX, so that it
- does not contain any extraneous set bits in it. */
-/* #define MASK_RETURN_ADDR */
-
-/* Define this macro to 0 if your target supports DWARF 2 frame unwind
- information, but it does not yet work with exception handling. Otherwise,
- if your target supports this information (if it defines
- `INCOMING_RETURN_ADDR_RTX'), GCC will provide a default definition of 1.
-
- If this macro is defined to 1, the DWARF 2 unwinder will be the default
- exception handling mechanism; otherwise, setjmp/longjmp will be used by
- default.
-
- If this macro is defined to anything, the DWARF 2 unwinder will be used
- instead of inline unwinders and __unwind_function in the non-setjmp case. */
-/* #define DWARF2_UNWIND_INFO */
-
-\f
-/* Assembler Commands for Alignment. */
-
-/* The alignment (log base 2) to put in front of LABEL, which follows
- a BARRIER.
-
- This macro need not be defined if you don't want any special alignment to be
- done at such a time. Most machine descriptions do not currently define the
- macro. */
-/* #define LABEL_ALIGN_AFTER_BARRIER(LABEL) */
-
-/* The desired alignment for the location counter at the beginning
- of a loop.
-
- This macro need not be defined if you don't want any special alignment to be
- done at such a time. Most machine descriptions do not currently define the
- macro. */
-/* #define LOOP_ALIGN(LABEL) */
-
-/* A C statement to output to the stdio stream STREAM an assembler instruction
- to advance the location counter by NBYTES bytes. Those bytes should be zero
- when loaded. NBYTES will be a C expression of type `int'.
-
- Defined in svr4.h. */
-/* #define ASM_OUTPUT_SKIP(STREAM, NBYTES) \
- fprintf (STREAM, "\t.zero\t%u\n", (NBYTES)) */
-
-/* Define this macro if `ASM_OUTPUT_SKIP' should not be used in the text
- section because it fails put zeros in the bytes that are skipped. This is
- true on many Unix systems, where the pseudo-op to skip bytes produces no-op
- instructions rather than zeros when used in the text section. */
-/* #define ASM_NO_SKIP_IN_TEXT */
-
-/* A C statement to output to the stdio stream STREAM an assembler command to
- advance the location counter to a multiple of 2 to the POWER bytes. POWER
- will be a C expression of type `int'. */
-#define ASM_OUTPUT_ALIGN(STREAM, POWER) \
- fprintf ((STREAM), "\t.p2align %d\n", (POWER))
-
-\f
-/* Macros Affecting all Debug Formats. */
-
-/* A C expression that returns the DBX register number for the compiler
- register number REGNO. In simple cases, the value of this expression may be
- REGNO itself. But sometimes there are some registers that the compiler
- knows about and DBX does not, or vice versa. In such cases, some register
- may need to have one number in the compiler and another for DBX.
-
- If two registers have consecutive numbers inside GNU CC, and they can be
- used as a pair to hold a multiword value, then they *must* have consecutive
- numbers after renumbering with `DBX_REGISTER_NUMBER'. Otherwise, debuggers
- will be unable to access such a pair, because they expect register pairs to
- be consecutive in their own numbering scheme.
-
- If you find yourself defining `DBX_REGISTER_NUMBER' in way that does not
- preserve register pairs, then what you must do instead is redefine the
- actual register numbering scheme. */
-#define DBX_REGISTER_NUMBER(REGNO) \
-(GPR_P (REGNO) ? ((REGNO) - GPR_FIRST) \
- : ACCUM_P (REGNO) ? ((REGNO) - ACCUM_FIRST + 84) \
- : FLAG_P (REGNO) ? 66 /* return psw for all flags */ \
- : (REGNO) == ARG_POINTER_REGNUM ? (GPR_SP - GPR_FIRST) \
- : (REGNO) == CR_PSW ? (66 + 0) \
- : (REGNO) == CR_BPSW ? (66 + 1) \
- : (REGNO) == CR_PC ? (66 + 2) \
- : (REGNO) == CR_BPC ? (66 + 3) \
- : (REGNO) == CR_DPSW ? (66 + 4) \
- : (REGNO) == CR_DPC ? (66 + 5) \
- : (REGNO) == CR_RPT_C ? (66 + 7) \
- : (REGNO) == CR_RPT_S ? (66 + 8) \
- : (REGNO) == CR_RPT_E ? (66 + 9) \
- : (REGNO) == CR_MOD_S ? (66 + 10) \
- : (REGNO) == CR_MOD_E ? (66 + 11) \
- : (REGNO) == CR_IBA ? (66 + 14) \
- : (REGNO) == CR_EIT_VB ? (66 + 15) \
- : (REGNO) == CR_INT_S ? (66 + 16) \
- : (REGNO) == CR_INT_M ? (66 + 17) \
- : -1)
-
-/* A C expression that returns the integer offset value for an automatic
- variable having address X (an RTL expression). The default computation
- assumes that X is based on the frame-pointer and gives the offset from the
- frame-pointer. This is required for targets that produce debugging output
- for DBX or COFF-style debugging output for SDB and allow the frame-pointer
- to be eliminated when the `-g' options is used. */
-/* #define DEBUGGER_AUTO_OFFSET(X) */
-
-/* A C expression that returns the integer offset value for an argument having
- address X (an RTL expression). The nominal offset is OFFSET. */
-/* #define DEBUGGER_ARG_OFFSET(OFFSET, X) */
-
-/* A C expression that returns the type of debugging output GNU CC produces
- when the user specifies `-g' or `-ggdb'. Define this if you have arranged
- for GNU CC to support more than one format of debugging output. Currently,
- the allowable values are `DBX_DEBUG', `SDB_DEBUG', `DWARF_DEBUG',
- `DWARF2_DEBUG', and `XCOFF_DEBUG'.
-
- The value of this macro only affects the default debugging output; the user
- can always get a specific type of output by using `-gstabs', `-gcoff',
- `-gdwarf-1', `-gdwarf-2', or `-gxcoff'.
-
- Defined in svr4.h. */
-
-#undef PREFERRED_DEBUGGING_TYPE
-#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
-
-\f
-/* Specific Options for DBX Output. */
-
-/* Define this macro if GNU CC should produce debugging output for DBX in
- response to the `-g' option.
-
- Defined in svr4.h. */
-/* #define DBX_DEBUGGING_INFO */
-
-/* Define this macro if GNU CC should produce XCOFF format debugging output in
- response to the `-g' option. This is a variant of DBX format. */
-/* #define XCOFF_DEBUGGING_INFO */
-
-/* Define this macro to control whether GNU CC should by default generate GDB's
- extended version of DBX debugging information (assuming DBX-format debugging
- information is enabled at all). If you don't define the macro, the default
- is 1: always generate the extended information if there is any occasion to. */
-/* #define DEFAULT_GDB_EXTENSIONS */
-
-/* Define this macro if all `.stabs' commands should be output while in the
- text section. */
-/* #define DEBUG_SYMS_TEXT */
-
-/* A C string constant naming the assembler pseudo op to use instead of
- `.stabs' to define an ordinary debugging symbol. If you don't define this
- macro, `.stabs' is used. This macro applies only to DBX debugging
- information format. */
-/* #define ASM_STABS_OP */
-
-/* A C string constant naming the assembler pseudo op to use instead of
- `.stabd' to define a debugging symbol whose value is the current location.
- If you don't define this macro, `.stabd' is used. This macro applies only
- to DBX debugging information format. */
-/* #define ASM_STABD_OP */
-
-/* A C string constant naming the assembler pseudo op to use instead of
- `.stabn' to define a debugging symbol with no name. If you don't define
- this macro, `.stabn' is used. This macro applies only to DBX debugging
- information format. */
-/* #define ASM_STABN_OP */
-
-/* Define this macro if DBX on your system does not support the construct
- `xsTAGNAME'. On some systems, this construct is used to describe a forward
- reference to a structure named TAGNAME. On other systems, this construct is
- not supported at all. */
-/* #define DBX_NO_XREFS */
-
-/* A symbol name in DBX-format debugging information is normally continued
- (split into two separate `.stabs' directives) when it exceeds a certain
- length (by default, 80 characters). On some operating systems, DBX requires
- this splitting; on others, splitting must not be done. You can inhibit
- splitting by defining this macro with the value zero. You can override the
- default splitting-length by defining this macro as an expression for the
- length you desire. */
-/* #define DBX_CONTIN_LENGTH */
-
-/* Normally continuation is indicated by adding a `\' character to the end of a
- `.stabs' string when a continuation follows. To use a different character
- instead, define this macro as a character constant for the character you
- want to use. Do not define this macro if backslash is correct for your
- system. */
-/* #define DBX_CONTIN_CHAR */
-
-/* Define this macro if it is necessary to go to the data section before
- outputting the `.stabs' pseudo-op for a non-global static variable. */
-/* #define DBX_STATIC_STAB_DATA_SECTION */
-
-/* The value to use in the "code" field of the `.stabs' directive for a
- typedef. The default is `N_LSYM'. */
-/* #define DBX_TYPE_DECL_STABS_CODE */
-
-/* The value to use in the "code" field of the `.stabs' directive for a static
- variable located in the text section. DBX format does not provide any
- "right" way to do this. The default is `N_FUN'. */
-/* #define DBX_STATIC_CONST_VAR_CODE */
-
-/* The value to use in the "code" field of the `.stabs' directive for a
- parameter passed in registers. DBX format does not provide any "right" way
- to do this. The default is `N_RSYM'. */
-/* #define DBX_REGPARM_STABS_CODE */
-
-/* The letter to use in DBX symbol data to identify a symbol as a parameter
- passed in registers. DBX format does not customarily provide any way to do
- this. The default is `'P''. */
-/* #define DBX_REGPARM_STABS_LETTER */
-
-/* The letter to use in DBX symbol data to identify a symbol as a stack
- parameter. The default is `'p''. */
-/* #define DBX_MEMPARM_STABS_LETTER */
-
-/* Define this macro if the DBX information for a function and its arguments
- should precede the assembler code for the function. Normally, in DBX
- format, the debugging information entirely follows the assembler code.
-
- Defined in svr4.h. */
-/* #define DBX_FUNCTION_FIRST */
-
-/* Define this macro if the `N_LBRAC' symbol for a block should precede the
- debugging information for variables and functions defined in that block.
- Normally, in DBX format, the `N_LBRAC' symbol comes first. */
-/* #define DBX_LBRAC_FIRST */
-
-/* Define this macro if the value of a symbol describing the scope of a block
- (`N_LBRAC' or `N_RBRAC') should be relative to the start of the enclosing
- function. Normally, GNU C uses an absolute address.
-
- Defined in svr4.h. */
-/* #define DBX_BLOCKS_FUNCTION_RELATIVE */
-
-/* Define this macro if GNU C should generate `N_BINCL' and `N_EINCL'
- stabs for included header files, as on Sun systems. This macro
- also directs GNU C to output a type number as a pair of a file
- number and a type number within the file. Normally, GNU C does not
- generate `N_BINCL' or `N_EINCL' stabs, and it outputs a single
- number for a type number. */
-/* #define DBX_USE_BINCL */
-
-\f
-/* Open ended Hooks for DBX Output. */
-
-/* Define this macro to say how to output to STREAM the debugging information
- for the start of a scope level for variable names. The argument NAME is the
- name of an assembler symbol (for use with `assemble_name') whose value is
- the address where the scope begins. */
-/* #define DBX_OUTPUT_LBRAC(STREAM, NAME) */
-
-/* Like `DBX_OUTPUT_LBRAC', but for the end of a scope level. */
-/* #define DBX_OUTPUT_RBRAC(STREAM, NAME) */
-
-/* Define this macro if the target machine requires special handling to output
- an enumeration type. The definition should be a C statement (sans
- semicolon) to output the appropriate information to STREAM for the type
- TYPE. */
-/* #define DBX_OUTPUT_ENUM(STREAM, TYPE) */
-
-/* Define this macro if the target machine requires special output at the end
- of the debugging information for a function. The definition should be a C
- statement (sans semicolon) to output the appropriate information to STREAM.
- FUNCTION is the `FUNCTION_DECL' node for the function. */
-/* #define DBX_OUTPUT_FUNCTION_END(STREAM, FUNCTION) */
-
-/* Define this macro if you need to control the order of output of the standard
- data types at the beginning of compilation. The argument SYMS is a `tree'
- which is a chain of all the predefined global symbols, including names of
- data types.
-
- Normally, DBX output starts with definitions of the types for integers and
- characters, followed by all the other predefined types of the particular
- language in no particular order.
-
- On some machines, it is necessary to output different particular types
- first. To do this, define `DBX_OUTPUT_STANDARD_TYPES' to output those
- symbols in the necessary order. Any predefined types that you don't
- explicitly output will be output afterward in no particular order.
-
- Be careful not to define this macro so that it works only for C. There are
- no global variables to access most of the built-in types, because another
- language may have another set of types. The way to output a particular type
- is to look through SYMS to see if you can find it. Here is an example:
-
- {
- tree decl;
- for (decl = syms; decl; decl = TREE_CHAIN (decl))
- if (!strcmp (IDENTIFIER_POINTER (DECL_NAME (decl)),
- "long int"))
- dbxout_symbol (decl);
- ...
- }
-
- This does nothing if the expected type does not exist.
-
- See the function `init_decl_processing' in `c-decl.c' to find the names to
- use for all the built-in C types. */
-/* #define DBX_OUTPUT_STANDARD_TYPES(SYMS) */
-
-/* Some stabs encapsulation formats (in particular ECOFF), cannot
- handle the `.stabs "",N_FUN,,0,0,Lscope-function-1' gdb dbx
- extension construct. On those machines, define this macro to turn
- this feature off without disturbing the rest of the gdb extensions. */
-/* #define NO_DBX_FUNCTION_END */
-
-\f
-/* File names in DBX format. */
-
-/* Define this if DBX wants to have the current directory recorded in each
- object file.
-
- Note that the working directory is always recorded if GDB extensions are
- enabled. */
-/* #define DBX_WORKING_DIRECTORY */
-
-/* A C statement to output DBX debugging information to the stdio stream STREAM
- which indicates that file NAME is the main source file--the file specified
- as the input file for compilation. This macro is called only once, at the
- beginning of compilation.
-
- This macro need not be defined if the standard form of output for DBX
- debugging information is appropriate.
-
- Defined in svr4.h. */
-/* #define DBX_OUTPUT_MAIN_SOURCE_FILENAME(STREAM, NAME) */
-
-/* A C statement to output DBX debugging information to the stdio stream STREAM
- which indicates that the current directory during compilation is named NAME.
-
- This macro need not be defined if the standard form of output for DBX
- debugging information is appropriate. */
-/* #define DBX_OUTPUT_MAIN_SOURCE_DIRECTORY(STREAM, NAME) */
-
-/* A C statement to output DBX debugging information at the end of compilation
- of the main source file NAME.
-
- If you don't define this macro, nothing special is output at the end of
- compilation, which is correct for most machines. */
-/* #define DBX_OUTPUT_MAIN_SOURCE_FILE_END(STREAM, NAME) */
-
-/* A C statement to output DBX debugging information to the stdio stream STREAM
- which indicates that file NAME is the current source file. This output is
- generated each time input shifts to a different source file as a result of
- `#include', the end of an included file, or a `#line' command.
-
- This macro need not be defined if the standard form of output for DBX
- debugging information is appropriate. */
-/* #define DBX_OUTPUT_SOURCE_FILENAME(STREAM, NAME) */
-
-\f
-/* Macros for SDB and Dwarf Output. */
-
-/* Define this macro if GNU CC should produce COFF-style debugging output for
- SDB in response to the `-g' option. */
-/* #define SDB_DEBUGGING_INFO */
-
-/* Define this macro if GNU CC should produce dwarf format debugging output in
- response to the `-g' option.
-
- Defined in svr4.h. */
-/* #define DWARF_DEBUGGING_INFO */
-
-/* Define this macro if GNU CC should produce dwarf version 2 format debugging
- output in response to the `-g' option.
-
- To support optional call frame debugging information, you must also define
- `INCOMING_RETURN_ADDR_RTX' and either set `RTX_FRAME_RELATED_P' on the
- prologue insns if you use RTL for the prologue, or call `dwarf2out_def_cfa'
- and `dwarf2out_reg_save' as appropriate from output_function_prologue() if
- you don't.
-
- Defined in svr4.h. */
-/* #define DWARF2_DEBUGGING_INFO */
-
-/* Define these macros to override the assembler syntax for the special SDB
- assembler directives. See `sdbout.c' for a list of these macros and their
- arguments. If the standard syntax is used, you need not define them
- yourself. */
-/* #define PUT_SDB_... */
-
-/* Some assemblers do not support a semicolon as a delimiter, even between SDB
- assembler directives. In that case, define this macro to be the delimiter
- to use (usually `\n'). It is not necessary to define a new set of
- `PUT_SDB_OP' macros if this is the only change required. */
-/* #define SDB_DELIM */
-
-/* Define this macro to override the usual method of constructing a dummy name
- for anonymous structure and union types. See `sdbout.c' for more
- information. */
-/* #define SDB_GENERATE_FAKE */
-
-/* Define this macro to allow references to unknown structure, union, or
- enumeration tags to be emitted. Standard COFF does not allow handling of
- unknown references, MIPS ECOFF has support for it. */
-/* #define SDB_ALLOW_UNKNOWN_REFERENCES */
-
-/* Define this macro to allow references to structure, union, or enumeration
- tags that have not yet been seen to be handled. Some assemblers choke if
- forward tags are used, while some require it. */
-/* #define SDB_ALLOW_FORWARD_REFERENCES */
-
-\f
-/* Cross Compilation and Floating Point. */
-
-/* While all modern machines use 2's complement representation for integers,
- there are a variety of representations for floating point numbers. This
- means that in a cross-compiler the representation of floating point numbers
- in the compiled program may be different from that used in the machine doing
- the compilation.
-
- Because different representation systems may offer different amounts of
- range and precision, the cross compiler cannot safely use the host machine's
- floating point arithmetic. Therefore, floating point constants must be
- represented in the target machine's format. This means that the cross
- compiler cannot use `atof' to parse a floating point constant; it must have
- its own special routine to use instead. Also, constant folding must emulate
- the target machine's arithmetic (or must not be done at all).
-
- The macros in the following table should be defined only if you are cross
- compiling between different floating point formats.
-
- Otherwise, don't define them. Then default definitions will be set up which
- use `double' as the data type, `==' to test for equality, etc.
-
- You don't need to worry about how many times you use an operand of any of
- these macros. The compiler never uses operands which have side effects. */
-
-/* A macro for the C data type to be used to hold a floating point value in the
- target machine's format. Typically this would be a `struct' containing an
- array of `int'. */
-/* #define REAL_VALUE_TYPE */
-
-/* A macro for a C expression which compares for equality the two values, X and
- Y, both of type `REAL_VALUE_TYPE'. */
-/* #define REAL_VALUES_EQUAL(X, Y) */
-
-/* A macro for a C expression which tests whether X is less than Y, both values
- being of type `REAL_VALUE_TYPE' and interpreted as floating point numbers in
- the target machine's representation. */
-/* #define REAL_VALUES_LESS(X, Y) */
-
-/* A macro for a C expression which performs the standard library function
- `ldexp', but using the target machine's floating point representation. Both
- X and the value of the expression have type `REAL_VALUE_TYPE'. The second
- argument, SCALE, is an integer. */
-/* #define REAL_VALUE_LDEXP(X, SCALE) */
-
-/* A macro whose definition is a C expression to convert the target-machine
- floating point value X to a signed integer. X has type `REAL_VALUE_TYPE'. */
-/* #define REAL_VALUE_FIX(X) */
-
-/* A macro whose definition is a C expression to convert the target-machine
- floating point value X to an unsigned integer. X has type
- `REAL_VALUE_TYPE'. */
-/* #define REAL_VALUE_UNSIGNED_FIX(X) */
-
-/* A macro whose definition is a C expression to round the target-machine
- floating point value X towards zero to an integer value (but still as a
- floating point number). X has type `REAL_VALUE_TYPE', and so does the
- value. */
-/* #define REAL_VALUE_RNDZINT(X) */
-
-/* A macro whose definition is a C expression to round the target-machine
- floating point value X towards zero to an unsigned integer value (but still
- represented as a floating point number). X has type `REAL_VALUE_TYPE', and
- so does the value. */
-/* #define REAL_VALUE_UNSIGNED_RNDZINT(X) */
-
-/* A macro for a C expression which converts STRING, an expression of type
- `char *', into a floating point number in the target machine's
- representation for mode MODE. The value has type `REAL_VALUE_TYPE'. */
-/* #define REAL_VALUE_ATOF(STRING, MODE) */
-
-/* Define this macro if infinity is a possible floating point value, and
- therefore division by 0 is legitimate. */
-/* #define REAL_INFINITY */
-
-/* A macro for a C expression which determines whether X, a floating point
- value, is infinity. The value has type `int'. By default, this is defined
- to call `isinf'. */
-/* #define REAL_VALUE_ISINF(X) */
-
-/* A macro for a C expression which determines whether X, a floating point
- value, is a "nan" (not-a-number). The value has type `int'. By default,
- this is defined to call `isnan'. */
-/* #define REAL_VALUE_ISNAN(X) */
-
-/* Define the following additional macros if you want to make floating point
- constant folding work while cross compiling. If you don't define them,
- cross compilation is still possible, but constant folding will not happen
- for floating point values. */
-
-/* A macro for a C statement which calculates an arithmetic operation of the
- two floating point values X and Y, both of type `REAL_VALUE_TYPE' in the
- target machine's representation, to produce a result of the same type and
- representation which is stored in OUTPUT (which will be a variable).
-
- The operation to be performed is specified by CODE, a tree code which will
- always be one of the following: `PLUS_EXPR', `MINUS_EXPR', `MULT_EXPR',
- `RDIV_EXPR', `MAX_EXPR', `MIN_EXPR'.
-
- The expansion of this macro is responsible for checking for overflow. If
- overflow happens, the macro expansion should execute the statement `return
- 0;', which indicates the inability to perform the arithmetic operation
- requested. */
-/* #define REAL_ARITHMETIC(OUTPUT, CODE, X, Y) */
-
-/* The real.h file actually defines REAL_ARITHMETIC appropriately if it was
- defined at all before entering into the code, by using #undef first. */
-#define REAL_ARITHMETIC
-
-/* A macro for a C expression which returns the negative of the floating point
- value X. Both X and the value of the expression have type `REAL_VALUE_TYPE'
- and are in the target machine's floating point representation.
-
- There is no way for this macro to report overflow, since overflow can't
- happen in the negation operation. */
-/* #define REAL_VALUE_NEGATE(X) */
-
-/* A macro for a C expression which converts the floating point value X to mode
- MODE.
-
- Both X and the value of the expression are in the target machine's floating
- point representation and have type `REAL_VALUE_TYPE'. However, the value
- should have an appropriate bit pattern to be output properly as a floating
- constant whose precision accords with mode MODE.
-
- There is no way for this macro to report overflow. */
-/* #define REAL_VALUE_TRUNCATE(MODE, X) */
-
-/* A macro for a C expression which converts a floating point value X into a
- double-precision integer which is then stored into LOW and HIGH, two
- variables of type INT. */
-/* #define REAL_VALUE_TO_INT(LOW, HIGH, X) */
-
-/* A macro for a C expression which converts a double-precision integer found
- in LOW and HIGH, two variables of type INT, into a floating point value
- which is then stored into X. */
-/* #define REAL_VALUE_FROM_INT(X, LOW, HIGH) */
-
-\f
-/* Miscellaneous Parameters. */
-
-/* Define this if you have defined special-purpose predicates in the file
- `MACHINE.c'. This macro is called within an initializer of an array of
- structures. The first field in the structure is the name of a predicate and
- the second field is an array of rtl codes. For each predicate, list all rtl
- codes that can be in expressions matched by the predicate. The list should
- have a trailing comma. Here is an example of two entries in the list for a
- typical RISC machine:
-
- #define PREDICATE_CODES \
- {"gen_reg_rtx_operand", {SUBREG, REG}}, \
- {"reg_or_short_cint_operand", {SUBREG, REG, CONST_INT}},
-
- Defining this macro does not affect the generated code (however, incorrect
- definitions that omit an rtl code that may be matched by the predicate can
- cause the compiler to malfunction). Instead, it allows the table built by
- `genrecog' to be more compact and efficient, thus speeding up the compiler.
- The most important predicates to include in the list specified by this macro
- are thoses used in the most insn patterns. */
-
-#define PREDICATE_CODES \
- { "short_memory_operand", { MEM }}, \
- { "long_memory_operand", { MEM }}, \
- { "d30v_memory_operand", { MEM }}, \
- { "single_reg_memory_operand", { MEM }}, \
- { "const_addr_memory_operand", { MEM }}, \
- { "call_operand", { MEM }}, \
- { "gpr_operand", { REG, SUBREG }}, \
- { "accum_operand", { REG, SUBREG }}, \
- { "gpr_or_accum_operand", { REG, SUBREG }}, \
- { "cr_operand", { REG, SUBREG }}, \
- { "repeat_operand", { REG, SUBREG }}, \
- { "flag_operand", { REG, SUBREG }}, \
- { "br_flag_operand", { REG, SUBREG }}, \
- { "br_flag_or_constant_operand", { REG, SUBREG, CONST_INT }}, \
- { "gpr_or_br_flag_operand", { REG, SUBREG }}, \
- { "f0_operand", { REG, SUBREG }}, \
- { "f1_operand", { REG, SUBREG }}, \
- { "carry_operand", { REG, SUBREG }}, \
- { "reg_or_0_operand", { REG, SUBREG, CONST_INT, \
- CONST_DOUBLE }}, \
- { "gpr_or_signed6_operand", { REG, SUBREG, CONST_INT }}, \
- { "gpr_or_unsigned5_operand", { REG, SUBREG, CONST_INT }}, \
- { "gpr_or_unsigned6_operand", { REG, SUBREG, CONST_INT }}, \
- { "gpr_or_constant_operand", { REG, SUBREG, CONST_INT, \
- CONST, SYMBOL_REF, \
- LABEL_REF }}, \
- { "gpr_or_dbl_const_operand", { REG, SUBREG, CONST_INT, \
- CONST, SYMBOL_REF, \
- LABEL_REF, CONST_DOUBLE }}, \
- { "gpr_or_memory_operand", { REG, SUBREG, MEM }}, \
- { "move_input_operand", { REG, SUBREG, MEM, CONST_INT, \
- CONST, SYMBOL_REF, \
- LABEL_REF, CONST_DOUBLE }}, \
- { "move_output_operand", { REG, SUBREG, MEM }}, \
- { "signed6_operand", { CONST_INT }}, \
- { "unsigned5_operand", { CONST_INT }}, \
- { "unsigned6_operand", { CONST_INT }}, \
- { "bitset_operand", { CONST_INT }}, \
- { "condexec_test_operator", { EQ, NE }}, \
- { "condexec_branch_operator", { EQ, NE }}, \
- { "condexec_unary_operator", { ABS, NEG, NOT, ZERO_EXTEND }}, \
- { "condexec_addsub_operator", { PLUS, MINUS }}, \
- { "condexec_binary_operator", { MULT, AND, IOR, XOR, \
- ASHIFT, ASHIFTRT, LSHIFTRT, \
- ROTATE, ROTATERT }}, \
- { "condexec_shiftl_operator", { ASHIFT, ROTATE }}, \
- { "condexec_extend_operator", { SIGN_EXTEND, ZERO_EXTEND }}, \
- { "branch_zero_operator", { EQ, NE }}, \
- { "cond_move_dest_operand", { REG, SUBREG, MEM }}, \
- { "cond_move_operand", { REG, SUBREG, CONST_INT, \
- CONST, SYMBOL_REF, \
- LABEL_REF, MEM }}, \
- { "cond_exec_operand", { REG, SUBREG, CONST_INT, \
- CONST, SYMBOL_REF, \
- LABEL_REF, MEM }}, \
- { "srelational_si_operator", { EQ, NE, LT, LE, GT, GE }}, \
- { "urelational_si_operator", { LTU, LEU, GTU, GEU }}, \
- { "relational_di_operator", { EQ, NE, LT, LE, GT, GE, \
- LTU, LEU, GTU, GEU }},
-
-/* An alias for a machine mode name. This is the machine mode that elements of
- a jump-table should have. */
-#define CASE_VECTOR_MODE SImode
-
-/* Define as C expression which evaluates to nonzero if the tablejump
- instruction expects the table to contain offsets from the address of the
- table.
- Do not define this if the table should contain absolute addresses. */
-/* #define CASE_VECTOR_PC_RELATIVE 1 */
-
-/* Define this if control falls through a `case' insn when the index value is
- out of range. This means the specified default-label is actually ignored by
- the `case' insn proper. */
-/* #define CASE_DROPS_THROUGH */
-
-/* Define this to be the smallest number of different values for which it is
- best to use a jump-table instead of a tree of conditional branches. The
- default is four for machines with a `casesi' instruction and five otherwise.
- This is best for most machines. */
-/* #define CASE_VALUES_THRESHOLD */
-
-/* Define this macro if operations between registers with integral mode smaller
- than a word are always performed on the entire register. Most RISC machines
- have this property and most CISC machines do not. */
-#define WORD_REGISTER_OPERATIONS 1
-
-/* Define this macro to be a C expression indicating when insns that read
- memory in MODE, an integral mode narrower than a word, set the bits outside
- of MODE to be either the sign-extension or the zero-extension of the data
- read. Return `SIGN_EXTEND' for values of MODE for which the insn
- sign-extends, `ZERO_EXTEND' for which it zero-extends, and `NIL' for other
- modes.
-
- This macro is not called with MODE non-integral or with a width greater than
- or equal to `BITS_PER_WORD', so you may return any value in this case. Do
- not define this macro if it would always return `NIL'. On machines where
- this macro is defined, you will normally define it as the constant
- `SIGN_EXTEND' or `ZERO_EXTEND'. */
-
-#define LOAD_EXTEND_OP(MODE) SIGN_EXTEND
-
-/* Define if loading short immediate values into registers sign extends. */
-#define SHORT_IMMEDIATES_SIGN_EXTEND
-
-/* Define this macro if the same instructions that convert a floating point
- number to a signed fixed point number also convert validly to an unsigned
- one. */
-/* #define FIXUNS_TRUNC_LIKE_FIX_TRUNC */
-
-/* The maximum number of bytes that a single instruction can move quickly from
- memory to memory. */
-#define MOVE_MAX 8
-
-/* The maximum number of bytes that a single instruction can move quickly from
- memory to memory. If this is undefined, the default is `MOVE_MAX'.
- Otherwise, it is the constant value that is the largest value that
- `MOVE_MAX' can have at run-time. */
-/* #define MAX_MOVE_MAX */
-
-/* A C expression that is nonzero if on this machine the number of bits
- actually used for the count of a shift operation is equal to the number of
- bits needed to represent the size of the object being shifted. When this
- macro is non-zero, the compiler will assume that it is safe to omit a
- sign-extend, zero-extend, and certain bitwise `and' instructions that
- truncates the count of a shift operation. On machines that have
- instructions that act on bitfields at variable positions, which may include
- `bit test' instructions, a nonzero `SHIFT_COUNT_TRUNCATED' also enables
- deletion of truncations of the values that serve as arguments to bitfield
- instructions.
-
- If both types of instructions truncate the count (for shifts) and position
- (for bitfield operations), or if no variable-position bitfield instructions
- exist, you should define this macro.
-
- However, on some machines, such as the 80386 and the 680x0, truncation only
- applies to shift operations and not the (real or pretended) bitfield
- operations. Define `SHIFT_COUNT_TRUNCATED' to be zero on such machines.
- Instead, add patterns to the `md' file that include the implied truncation
- of the shift instructions.
-
- You need not define this macro if it would always have the value of zero. */
-/* #define SHIFT_COUNT_TRUNCATED */
-
-/* A C expression which is nonzero if on this machine it is safe to "convert"
- an integer of INPREC bits to one of OUTPREC bits (where OUTPREC is smaller
- than INPREC) by merely operating on it as if it had only OUTPREC bits.
-
- On many machines, this expression can be 1.
-
- When `TRULY_NOOP_TRUNCATION' returns 1 for a pair of sizes for modes for
- which `MODES_TIEABLE_P' is 0, suboptimal code can result. If this is the
- case, making `TRULY_NOOP_TRUNCATION' return 0 in such cases may improve
- things. */
-#define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
-
-/* A C expression describing the value returned by a comparison operator with
- an integral mode and stored by a store-flag instruction (`sCOND') when the
- condition is true. This description must apply to *all* the `sCOND'
- patterns and all the comparison operators whose results have a `MODE_INT'
- mode.
-
- A value of 1 or -1 means that the instruction implementing the comparison
- operator returns exactly 1 or -1 when the comparison is true and 0 when the
- comparison is false. Otherwise, the value indicates which bits of the
- result are guaranteed to be 1 when the comparison is true. This value is
- interpreted in the mode of the comparison operation, which is given by the
- mode of the first operand in the `sCOND' pattern. Either the low bit or the
- sign bit of `STORE_FLAG_VALUE' be on. Presently, only those bits are used
- by the compiler.
-
- If `STORE_FLAG_VALUE' is neither 1 or -1, the compiler will generate code
- that depends only on the specified bits. It can also replace comparison
- operators with equivalent operations if they cause the required bits to be
- set, even if the remaining bits are undefined. For example, on a machine
- whose comparison operators return an `SImode' value and where
- `STORE_FLAG_VALUE' is defined as `0x80000000', saying that just the sign bit
- is relevant, the expression
-
- (ne:SI (and:SI X (const_int POWER-OF-2)) (const_int 0))
-
- can be converted to
-
- (ashift:SI X (const_int N))
-
- where N is the appropriate shift count to move the bit being tested into the
- sign bit.
-
- There is no way to describe a machine that always sets the low-order bit for
- a true value, but does not guarantee the value of any other bits, but we do
- not know of any machine that has such an instruction. If you are trying to
- port GNU CC to such a machine, include an instruction to perform a
- logical-and of the result with 1 in the pattern for the comparison operators
- and let us know (*note How to Report Bugs: Bug Reporting.).
-
- Often, a machine will have multiple instructions that obtain a value from a
- comparison (or the condition codes). Here are rules to guide the choice of
- value for `STORE_FLAG_VALUE', and hence the instructions to be used:
-
- * Use the shortest sequence that yields a valid definition for
- `STORE_FLAG_VALUE'. It is more efficient for the compiler to
- "normalize" the value (convert it to, e.g., 1 or 0) than for
- the comparison operators to do so because there may be
- opportunities to combine the normalization with other
- operations.
-
- * For equal-length sequences, use a value of 1 or -1, with -1
- being slightly preferred on machines with expensive jumps and
- 1 preferred on other machines.
-
- * As a second choice, choose a value of `0x80000001' if
- instructions exist that set both the sign and low-order bits
- but do not define the others.
-
- * Otherwise, use a value of `0x80000000'.
-
- Many machines can produce both the value chosen for `STORE_FLAG_VALUE' and
- its negation in the same number of instructions. On those machines, you
- should also define a pattern for those cases, e.g., one matching
-
- (set A (neg:M (ne:M B C)))
-
- Some machines can also perform `and' or `plus' operations on condition code
- values with less instructions than the corresponding `sCOND' insn followed
- by `and' or `plus'. On those machines, define the appropriate patterns.
- Use the names `incscc' and `decscc', respectively, for the the patterns
- which perform `plus' or `minus' operations on condition code values. See
- `rs6000.md' for some examples. The GNU Superoptizer can be used to find
- such instruction sequences on other machines.
-
- You need not define `STORE_FLAG_VALUE' if the machine has no store-flag
- instructions. */
-/* #define STORE_FLAG_VALUE */
-
-/* A C expression that gives a non-zero floating point value that is returned
- when comparison operators with floating-point results are true. Define this
- macro on machine that have comparison operations that return floating-point
- values. If there are no such operations, do not define this macro. */
-/* #define FLOAT_STORE_FLAG_VALUE */
-
-/* An alias for the machine mode for pointers. On most machines, define this
- to be the integer mode corresponding to the width of a hardware pointer;
- `SImode' on 32-bit machine or `DImode' on 64-bit machines. On some machines
- you must define this to be one of the partial integer modes, such as
- `PSImode'.
-
- The width of `Pmode' must be at least as large as the value of
- `POINTER_SIZE'. If it is not equal, you must define the macro
- `POINTERS_EXTEND_UNSIGNED' to specify how pointers are extended to `Pmode'. */
-#define Pmode SImode
-
-/* An alias for the machine mode used for memory references to functions being
- called, in `call' RTL expressions. On most machines this should be
- `QImode'. */
-#define FUNCTION_MODE QImode
-
-/* A C expression for the maximum number of instructions above which the
- function DECL should not be inlined. DECL is a `FUNCTION_DECL' node.
-
- The default definition of this macro is 64 plus 8 times the number of
- arguments that the function accepts. Some people think a larger threshold
- should be used on RISC machines. */
-/* #define INTEGRATE_THRESHOLD(DECL) */
-
-/* Define this if the preprocessor should ignore `#sccs' directives and print
- no error message.
-
- Defined in svr4.h. */
-/* #define SCCS_DIRECTIVE */
-
-/* Define this macro if the system header files support C++ as well as C. This
- macro inhibits the usual method of using system header files in C++, which
- is to pretend that the file's contents are enclosed in `extern "C" {...}'. */
-/* #define NO_IMPLICIT_EXTERN_C */
-
-/* Define this macro to handle System V style pragmas (particularly #pack).
-
- Defined in svr4.h. */
-#define HANDLE_SYSV_PRAGMA
-
-/* Define this macro if you want to handle #pragma weak (HANDLE_SYSV_PRAGMA
- must also be defined). */
-/* #define HANDLE_WEAK_PRAGMA */
-
-/* Define this macro to control use of the character `$' in identifier names.
- The value should be 0, 1, or 2. 0 means `$' is not allowed by default; 1
- means it is allowed by default if `-traditional' is used; 2 means it is
- allowed by default provided `-ansi' is not used. 1 is the default; there is
- no need to define this macro in that case. */
-/* #define DOLLARS_IN_IDENTIFIERS */
-
-/* Define this macro if the assembler does not accept the character `$' in
- label names. By default constructors and destructors in G++ have `$' in the
- identifiers. If this macro is defined, `.' is used instead.
-
- Defined in svr4.h. */
-/* #define NO_DOLLAR_IN_LABEL */
-
-/* Define this macro if the assembler does not accept the character `.' in
- label names. By default constructors and destructors in G++ have names that
- use `.'. If this macro is defined, these names are rewritten to avoid `.'. */
-/* #define NO_DOT_IN_LABEL */
-
-/* Define this macro if the target system expects every program's `main'
- function to return a standard "success" value by default (if no other value
- is explicitly returned).
-
- The definition should be a C statement (sans semicolon) to generate the
- appropriate rtl instructions. It is used only when compiling the end of
- `main'. */
-/* #define DEFAULT_MAIN_RETURN */
-
-/* Define this if your `exit' function needs to do something besides calling an
- external function `_cleanup' before terminating with `_exit'. The
- `EXIT_BODY' macro is only needed if `NEED_ATEXIT' is defined and
- `ON_EXIT' is not defined. */
-/* #define EXIT_BODY */
-
-/* Define this macro as a C expression that is nonzero if it is safe for the
- delay slot scheduler to place instructions in the delay slot of INSN, even
- if they appear to use a resource set or clobbered in INSN. INSN is always a
- `jump_insn' or an `insn'; GNU CC knows that every `call_insn' has this
- behavior. On machines where some `insn' or `jump_insn' is really a function
- call and hence has this behavior, you should define this macro.
-
- You need not define this macro if it would always return zero. */
-/* #define INSN_SETS_ARE_DELAYED(INSN) */
-
-/* Define this macro as a C expression that is nonzero if it is safe for the
- delay slot scheduler to place instructions in the delay slot of INSN, even
- if they appear to set or clobber a resource referenced in INSN. INSN is
- always a `jump_insn' or an `insn'. On machines where some `insn' or
- `jump_insn' is really a function call and its operands are registers whose
- use is actually in the subroutine it calls, you should define this macro.
- Doing so allows the delay slot scheduler to move instructions which copy
- arguments into the argument registers into the delay slot of INSN.
-
- You need not define this macro if it would always return zero. */
-/* #define INSN_REFERENCES_ARE_DELAYED(INSN) */
-
-/* In rare cases, correct code generation requires extra machine dependent
- processing between the second jump optimization pass and delayed branch
- scheduling. On those machines, define this macro as a C statement to act on
- the code starting at INSN. */
-#define MACHINE_DEPENDENT_REORG(INSN) d30v_machine_dependent_reorg (INSN)
-
-/* Define this macro if in some cases global symbols from one translation unit
- may not be bound to undefined symbols in another translation unit without
- user intervention. For instance, under Microsoft Windows symbols must be
- explicitly imported from shared libraries (DLLs). */
-/* #define MULTIPLE_SYMBOL_SPACES */
-
-/* A C expression for the maximum number of instructions to execute via
- conditional execution instructions instead of a branch. A value of
- BRANCH_COST+1 is the default if the machine does not use cc0, and 1 if it
- does use cc0. */
-#define MAX_CONDITIONAL_EXECUTE d30v_cond_exec
-
-#define D30V_DEFAULT_MAX_CONDITIONAL_EXECUTE 4
-
-/* Values of the -mcond-exec=n string. */
-extern int d30v_cond_exec;
-extern const char *d30v_cond_exec_string;
-
-#endif /* GCC_D30V_H */
projects / msp430-gcc.git / blobdiff