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Diffstat (limited to 'gcc-4.2.1/gcc/config/alpha/alpha.h')
| -rw-r--r-- | gcc-4.2.1/gcc/config/alpha/alpha.h | 1593 |
1 files changed, 0 insertions, 1593 deletions
diff --git a/gcc-4.2.1/gcc/config/alpha/alpha.h b/gcc-4.2.1/gcc/config/alpha/alpha.h deleted file mode 100644 index ed02c9f3e..000000000 --- a/gcc-4.2.1/gcc/config/alpha/alpha.h +++ /dev/null @@ -1,1593 +0,0 @@ -/* Definitions of target machine for GNU compiler, for DEC Alpha. - Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, - 2000, 2001, 2002, 2004, 2005 Free Software Foundation, Inc. - Contributed by Richard Kenner (kenner@vlsi1.ultra.nyu.edu) - -This file is part of GCC. - -GCC 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. - -GCC 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 GCC; see the file COPYING. If not, write to -the Free Software Foundation, 51 Franklin Street, Fifth Floor, -Boston, MA 02110-1301, USA. */ - -/* Target CPU builtins. */ -#define TARGET_CPU_CPP_BUILTINS() \ - do \ - { \ - builtin_define ("__alpha"); \ - builtin_define ("__alpha__"); \ - builtin_assert ("cpu=alpha"); \ - builtin_assert ("machine=alpha"); \ - if (TARGET_CIX) \ - { \ - builtin_define ("__alpha_cix__"); \ - builtin_assert ("cpu=cix"); \ - } \ - if (TARGET_FIX) \ - { \ - builtin_define ("__alpha_fix__"); \ - builtin_assert ("cpu=fix"); \ - } \ - if (TARGET_BWX) \ - { \ - builtin_define ("__alpha_bwx__"); \ - builtin_assert ("cpu=bwx"); \ - } \ - if (TARGET_MAX) \ - { \ - builtin_define ("__alpha_max__"); \ - builtin_assert ("cpu=max"); \ - } \ - if (alpha_cpu == PROCESSOR_EV6) \ - { \ - builtin_define ("__alpha_ev6__"); \ - builtin_assert ("cpu=ev6"); \ - } \ - else if (alpha_cpu == PROCESSOR_EV5) \ - { \ - builtin_define ("__alpha_ev5__"); \ - builtin_assert ("cpu=ev5"); \ - } \ - else /* Presumably ev4. */ \ - { \ - builtin_define ("__alpha_ev4__"); \ - builtin_assert ("cpu=ev4"); \ - } \ - if (TARGET_IEEE || TARGET_IEEE_WITH_INEXACT) \ - builtin_define ("_IEEE_FP"); \ - if (TARGET_IEEE_WITH_INEXACT) \ - builtin_define ("_IEEE_FP_INEXACT"); \ - if (TARGET_LONG_DOUBLE_128) \ - builtin_define ("__LONG_DOUBLE_128__"); \ - \ - /* Macros dependent on the C dialect. */ \ - SUBTARGET_LANGUAGE_CPP_BUILTINS(); \ -} while (0) - -#ifndef SUBTARGET_LANGUAGE_CPP_BUILTINS -#define SUBTARGET_LANGUAGE_CPP_BUILTINS() \ - do \ - { \ - if (preprocessing_asm_p ()) \ - builtin_define_std ("LANGUAGE_ASSEMBLY"); \ - else if (c_dialect_cxx ()) \ - { \ - builtin_define ("__LANGUAGE_C_PLUS_PLUS"); \ - builtin_define ("__LANGUAGE_C_PLUS_PLUS__"); \ - } \ - else \ - builtin_define_std ("LANGUAGE_C"); \ - if (c_dialect_objc ()) \ - { \ - builtin_define ("__LANGUAGE_OBJECTIVE_C"); \ - builtin_define ("__LANGUAGE_OBJECTIVE_C__"); \ - } \ - } \ - while (0) -#endif - -#define CPP_SPEC "%(cpp_subtarget)" - -#ifndef CPP_SUBTARGET_SPEC -#define CPP_SUBTARGET_SPEC "" -#endif - -#define WORD_SWITCH_TAKES_ARG(STR) \ - (!strcmp (STR, "rpath") || DEFAULT_WORD_SWITCH_TAKES_ARG(STR)) - -/* Print subsidiary information on the compiler version in use. */ -#define TARGET_VERSION - -/* Run-time compilation parameters selecting different hardware subsets. */ - -/* Which processor to schedule for. The cpu attribute defines a list that - mirrors this list, so changes to alpha.md must be made at the same time. */ - -enum processor_type -{ - PROCESSOR_EV4, /* 2106[46]{a,} */ - PROCESSOR_EV5, /* 21164{a,pc,} */ - PROCESSOR_EV6, /* 21264 */ - PROCESSOR_MAX -}; - -extern enum processor_type alpha_cpu; -extern enum processor_type alpha_tune; - -enum alpha_trap_precision -{ - ALPHA_TP_PROG, /* No precision (default). */ - ALPHA_TP_FUNC, /* Trap contained within originating function. */ - ALPHA_TP_INSN /* Instruction accuracy and code is resumption safe. */ -}; - -enum alpha_fp_rounding_mode -{ - ALPHA_FPRM_NORM, /* Normal rounding mode. */ - ALPHA_FPRM_MINF, /* Round towards minus-infinity. */ - ALPHA_FPRM_CHOP, /* Chopped rounding mode (towards 0). */ - ALPHA_FPRM_DYN /* Dynamic rounding mode. */ -}; - -enum alpha_fp_trap_mode -{ - ALPHA_FPTM_N, /* Normal trap mode. */ - ALPHA_FPTM_U, /* Underflow traps enabled. */ - ALPHA_FPTM_SU, /* Software completion, w/underflow traps */ - ALPHA_FPTM_SUI /* Software completion, w/underflow & inexact traps */ -}; - -extern int target_flags; - -extern enum alpha_trap_precision alpha_tp; -extern enum alpha_fp_rounding_mode alpha_fprm; -extern enum alpha_fp_trap_mode alpha_fptm; - -/* Invert the easy way to make options work. */ -#define TARGET_FP (!TARGET_SOFT_FP) - -/* These are for target os support and cannot be changed at runtime. */ -#define TARGET_ABI_WINDOWS_NT 0 -#define TARGET_ABI_OPEN_VMS 0 -#define TARGET_ABI_UNICOSMK 0 -#define TARGET_ABI_OSF (!TARGET_ABI_WINDOWS_NT \ - && !TARGET_ABI_OPEN_VMS \ - && !TARGET_ABI_UNICOSMK) - -#ifndef TARGET_AS_CAN_SUBTRACT_LABELS -#define TARGET_AS_CAN_SUBTRACT_LABELS TARGET_GAS -#endif -#ifndef TARGET_AS_SLASH_BEFORE_SUFFIX -#define TARGET_AS_SLASH_BEFORE_SUFFIX TARGET_GAS -#endif -#ifndef TARGET_CAN_FAULT_IN_PROLOGUE -#define TARGET_CAN_FAULT_IN_PROLOGUE 0 -#endif -#ifndef TARGET_HAS_XFLOATING_LIBS -#define TARGET_HAS_XFLOATING_LIBS TARGET_LONG_DOUBLE_128 -#endif -#ifndef TARGET_PROFILING_NEEDS_GP -#define TARGET_PROFILING_NEEDS_GP 0 -#endif -#ifndef TARGET_LD_BUGGY_LDGP -#define TARGET_LD_BUGGY_LDGP 0 -#endif -#ifndef TARGET_FIXUP_EV5_PREFETCH -#define TARGET_FIXUP_EV5_PREFETCH 0 -#endif -#ifndef HAVE_AS_TLS -#define HAVE_AS_TLS 0 -#endif - -#define TARGET_DEFAULT MASK_FPREGS - -#ifndef TARGET_CPU_DEFAULT -#define TARGET_CPU_DEFAULT 0 -#endif - -#ifndef TARGET_DEFAULT_EXPLICIT_RELOCS -#ifdef HAVE_AS_EXPLICIT_RELOCS -#define TARGET_DEFAULT_EXPLICIT_RELOCS MASK_EXPLICIT_RELOCS -#define TARGET_SUPPORT_ARCH 1 -#else -#define TARGET_DEFAULT_EXPLICIT_RELOCS 0 -#endif -#endif - -#ifndef TARGET_SUPPORT_ARCH -#define TARGET_SUPPORT_ARCH 0 -#endif - -/* Support for a compile-time default CPU, et cetera. The rules are: - --with-cpu is ignored if -mcpu is specified. - --with-tune is ignored if -mtune is specified. */ -#define OPTION_DEFAULT_SPECS \ - {"cpu", "%{!mcpu=*:-mcpu=%(VALUE)}" }, \ - {"tune", "%{!mtune=*:-mtune=%(VALUE)}" } - -/* This macro defines names of additional specifications to put in the - specs that can be used in various specifications like CC1_SPEC. Its - definition is an initializer with a subgrouping for each command option. - - Each subgrouping contains a string constant, that defines the - specification name, and a string constant that used by the GCC driver - program. - - Do not define this macro if it does not need to do anything. */ - -#ifndef SUBTARGET_EXTRA_SPECS -#define SUBTARGET_EXTRA_SPECS -#endif - -#define EXTRA_SPECS \ - { "cpp_subtarget", CPP_SUBTARGET_SPEC }, \ - SUBTARGET_EXTRA_SPECS - - -/* Sometimes certain combinations of command options do not make sense - on a particular target machine. You can define a macro - `OVERRIDE_OPTIONS' to take account of this. This macro, if - defined, is executed once just after all the command options have - been parsed. - - On the Alpha, it is used to translate target-option strings into - numeric values. */ - -#define OVERRIDE_OPTIONS override_options () - - -/* Define this macro to change register usage conditional on target flags. - - On the Alpha, we use this to disable the floating-point registers when - they don't exist. */ - -#define CONDITIONAL_REGISTER_USAGE \ -{ \ - int i; \ - if (! TARGET_FPREGS) \ - for (i = 32; i < 63; i++) \ - fixed_regs[i] = call_used_regs[i] = 1; \ -} - - -/* Show we can debug even without a frame pointer. */ -#define CAN_DEBUG_WITHOUT_FP - -/* target machine storage layout */ - -/* Define the size of `int'. The default is the same as the word size. */ -#define INT_TYPE_SIZE 32 - -/* Define the size of `long long'. The default is the twice the word size. */ -#define LONG_LONG_TYPE_SIZE 64 - -/* We're IEEE unless someone says to use VAX. */ -#define TARGET_FLOAT_FORMAT \ - (TARGET_FLOAT_VAX ? VAX_FLOAT_FORMAT : IEEE_FLOAT_FORMAT) - -/* The two floating-point formats we support are S-floating, which is - 4 bytes, and T-floating, which is 8 bytes. `float' is S and `double' - and `long double' are T. */ - -#define FLOAT_TYPE_SIZE 32 -#define DOUBLE_TYPE_SIZE 64 -#define LONG_DOUBLE_TYPE_SIZE (TARGET_LONG_DOUBLE_128 ? 128 : 64) - -/* Define this to set long double type size to use in libgcc2.c, which can - not depend on target_flags. */ -#ifdef __LONG_DOUBLE_128__ -#define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 128 -#else -#define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 64 -#endif - -/* Work around target_flags dependency in ada/targtyps.c. */ -#define WIDEST_HARDWARE_FP_SIZE 64 - -#define WCHAR_TYPE "unsigned int" -#define WCHAR_TYPE_SIZE 32 - -/* Define this macro if it is advisable to hold scalars in registers - in a wider mode than that declared by the program. In such cases, - the value is constrained to be within the bounds of the declared - type, but kept valid in the wider mode. The signedness of the - extension may differ from that of the type. - - For Alpha, we always store objects in a full register. 32-bit integers - are always sign-extended, but smaller objects retain their signedness. - - Note that small vector types can get mapped onto integer modes at the - whim of not appearing in alpha-modes.def. We never promoted these - values before; don't do so now that we've trimmed the set of modes to - those actually implemented in the backend. */ - -#define PROMOTE_MODE(MODE,UNSIGNEDP,TYPE) \ - if (GET_MODE_CLASS (MODE) == MODE_INT \ - && (TYPE == NULL || TREE_CODE (TYPE) != VECTOR_TYPE) \ - && GET_MODE_SIZE (MODE) < UNITS_PER_WORD) \ - { \ - if ((MODE) == SImode) \ - (UNSIGNEDP) = 0; \ - (MODE) = DImode; \ - } - -/* Define this if most significant bit is lowest numbered - in instructions that operate on numbered bit-fields. - - There are no such instructions on the Alpha, but the documentation - is little endian. */ -#define BITS_BIG_ENDIAN 0 - -/* Define this if most significant byte of a word is the lowest numbered. - This is false on the Alpha. */ -#define BYTES_BIG_ENDIAN 0 - -/* Define this if most significant word of a multiword number is lowest - numbered. - - For Alpha we can decide arbitrarily since there are no machine instructions - for them. Might as well be consistent with bytes. */ -#define WORDS_BIG_ENDIAN 0 - -/* Width of a word, in units (bytes). */ -#define UNITS_PER_WORD 8 - -/* Width in bits of a pointer. - See also the macro `Pmode' defined below. */ -#define POINTER_SIZE 64 - -/* Allocation boundary (in *bits*) for storing arguments in argument list. */ -#define PARM_BOUNDARY 64 - -/* Boundary (in *bits*) on which stack pointer should be aligned. */ -#define STACK_BOUNDARY 128 - -/* Allocation boundary (in *bits*) for the code of a function. */ -#define FUNCTION_BOUNDARY 32 - -/* Alignment of field after `int : 0' in a structure. */ -#define EMPTY_FIELD_BOUNDARY 64 - -/* Every structure's size must be a multiple of this. */ -#define STRUCTURE_SIZE_BOUNDARY 8 - -/* A bit-field declared as `int' forces `int' alignment for the struct. */ -#define PCC_BITFIELD_TYPE_MATTERS 1 - -/* No data type wants to be aligned rounder than this. */ -#define BIGGEST_ALIGNMENT 128 - -/* For atomic access to objects, must have at least 32-bit alignment - unless the machine has byte operations. */ -#define MINIMUM_ATOMIC_ALIGNMENT ((unsigned int) (TARGET_BWX ? 8 : 32)) - -/* Align all constants and variables to at least a word boundary so - we can pick up pieces of them faster. */ -/* ??? Only if block-move stuff knows about different source/destination - alignment. */ -#if 0 -#define CONSTANT_ALIGNMENT(EXP, ALIGN) MAX ((ALIGN), BITS_PER_WORD) -#define DATA_ALIGNMENT(EXP, ALIGN) MAX ((ALIGN), BITS_PER_WORD) -#endif - -/* Set this nonzero if move instructions will actually fail to work - when given unaligned data. - - Since we get an error message when we do one, call them invalid. */ - -#define STRICT_ALIGNMENT 1 - -/* Set this nonzero if unaligned move instructions are extremely slow. - - On the Alpha, they trap. */ - -#define SLOW_UNALIGNED_ACCESS(MODE, ALIGN) 1 - -/* Standard register usage. */ - -/* Number of actual hardware registers. - The hardware registers are assigned numbers for the compiler - from 0 to just below FIRST_PSEUDO_REGISTER. - All registers that the compiler knows about must be given numbers, - even those that are not normally considered general registers. - - We define all 32 integer registers, even though $31 is always zero, - and all 32 floating-point registers, even though $f31 is also - always zero. We do not bother defining the FP status register and - there are no other registers. - - Since $31 is always zero, we will use register number 31 as the - argument pointer. It will never appear in the generated code - because we will always be eliminating it in favor of the stack - pointer or hardware frame pointer. - - Likewise, we use $f31 for the frame pointer, which will always - be eliminated in favor of the hardware frame pointer or the - stack pointer. */ - -#define FIRST_PSEUDO_REGISTER 64 - -/* 1 for registers that have pervasive standard uses - and are not available for the register allocator. */ - -#define FIXED_REGISTERS \ - {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, \ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 } - -/* 1 for registers not available across function calls. - These must include the FIXED_REGISTERS and also any - registers that can be used without being saved. - The latter must include the registers where values are returned - and the register where structure-value addresses are passed. - Aside from that, you can include as many other registers as you like. */ -#define CALL_USED_REGISTERS \ - {1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, \ - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, \ - 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, \ - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 } - -/* List the order in which to allocate registers. Each register must be - listed once, even those in FIXED_REGISTERS. */ - -#define REG_ALLOC_ORDER { \ - 1, 2, 3, 4, 5, 6, 7, 8, /* nonsaved integer registers */ \ - 22, 23, 24, 25, 28, /* likewise */ \ - 0, /* likewise, but return value */ \ - 21, 20, 19, 18, 17, 16, /* likewise, but input args */ \ - 27, /* likewise, but OSF procedure value */ \ - \ - 42, 43, 44, 45, 46, 47, /* nonsaved floating-point registers */ \ - 54, 55, 56, 57, 58, 59, /* likewise */ \ - 60, 61, 62, /* likewise */ \ - 32, 33, /* likewise, but return values */ \ - 53, 52, 51, 50, 49, 48, /* likewise, but input args */ \ - \ - 9, 10, 11, 12, 13, 14, /* saved integer registers */ \ - 26, /* return address */ \ - 15, /* hard frame pointer */ \ - \ - 34, 35, 36, 37, 38, 39, /* saved floating-point registers */ \ - 40, 41, /* likewise */ \ - \ - 29, 30, 31, 63 /* gp, sp, ap, sfp */ \ -} - -/* Return number of consecutive hard regs needed starting at reg REGNO - to hold something of mode MODE. - This is ordinarily the length in words of a value of mode MODE - but can be less for certain modes in special long registers. */ - -#define HARD_REGNO_NREGS(REGNO, MODE) \ - ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD) - -/* Value is 1 if hard register REGNO can hold a value of machine-mode MODE. - On Alpha, the integer registers can hold any mode. The floating-point - registers can hold 64-bit integers as well, but not smaller values. */ - -#define HARD_REGNO_MODE_OK(REGNO, MODE) \ - ((REGNO) >= 32 && (REGNO) <= 62 \ - ? (MODE) == SFmode || (MODE) == DFmode || (MODE) == DImode \ - || (MODE) == SCmode || (MODE) == DCmode \ - : 1) - -/* A C expression that is nonzero if a value of mode - MODE1 is accessible in mode MODE2 without copying. - - This asymmetric test is true when MODE1 could be put - in an FP register but MODE2 could not. */ - -#define MODES_TIEABLE_P(MODE1, MODE2) \ - (HARD_REGNO_MODE_OK (32, (MODE1)) \ - ? HARD_REGNO_MODE_OK (32, (MODE2)) \ - : 1) - -/* Specify the registers used for certain standard purposes. - The values of these macros are register numbers. */ - -/* Alpha pc isn't overloaded on a register that the compiler knows about. */ -/* #define PC_REGNUM */ - -/* Register to use for pushing function arguments. */ -#define STACK_POINTER_REGNUM 30 - -/* Base register for access to local variables of the function. */ -#define HARD_FRAME_POINTER_REGNUM 15 - -/* Value should be nonzero if functions must have frame pointers. - Zero means the frame pointer need not be set up (and parms - may be accessed via the stack pointer) in functions that seem suitable. - This is computed in `reload', in reload1.c. */ -#define FRAME_POINTER_REQUIRED 0 - -/* Base register for access to arguments of the function. */ -#define ARG_POINTER_REGNUM 31 - -/* Base register for access to local variables of function. */ -#define FRAME_POINTER_REGNUM 63 - -/* Register in which static-chain is passed to a function. - - For the Alpha, this is based on an example; the calling sequence - doesn't seem to specify this. */ -#define STATIC_CHAIN_REGNUM 1 - -/* The register number of the register used to address a table of - static data addresses in memory. */ -#define PIC_OFFSET_TABLE_REGNUM 29 - -/* Define this macro if the register defined by `PIC_OFFSET_TABLE_REGNUM' - is clobbered by calls. */ -/* ??? It is and it isn't. It's required to be valid for a given - function when the function returns. It isn't clobbered by - current_file functions. Moreover, we do not expose the ldgp - until after reload, so we're probably safe. */ -/* #define PIC_OFFSET_TABLE_REG_CALL_CLOBBERED */ - -/* Define the classes of registers for register constraints in the - machine description. Also define ranges of constants. - - One of the classes must always be named ALL_REGS and include all hard regs. - If there is more than one class, another class must be named NO_REGS - and contain no registers. - - The name GENERAL_REGS must be the name of a class (or an alias for - another name such as ALL_REGS). This is the class of registers - that is allowed by "g" or "r" in a register constraint. - Also, registers outside this class are allocated only when - instructions express preferences for them. - - The classes must be numbered in nondecreasing order; that is, - a larger-numbered class must never be contained completely - in a smaller-numbered class. - - For any two classes, it is very desirable that there be another - class that represents their union. */ - -enum reg_class { - NO_REGS, R0_REG, R24_REG, R25_REG, R27_REG, - GENERAL_REGS, FLOAT_REGS, ALL_REGS, - LIM_REG_CLASSES -}; - -#define N_REG_CLASSES (int) LIM_REG_CLASSES - -/* Give names of register classes as strings for dump file. */ - -#define REG_CLASS_NAMES \ - {"NO_REGS", "R0_REG", "R24_REG", "R25_REG", "R27_REG", \ - "GENERAL_REGS", "FLOAT_REGS", "ALL_REGS" } - -/* Define which registers fit in which classes. - This is an initializer for a vector of HARD_REG_SET - of length N_REG_CLASSES. */ - -#define REG_CLASS_CONTENTS \ -{ {0x00000000, 0x00000000}, /* NO_REGS */ \ - {0x00000001, 0x00000000}, /* R0_REG */ \ - {0x01000000, 0x00000000}, /* R24_REG */ \ - {0x02000000, 0x00000000}, /* R25_REG */ \ - {0x08000000, 0x00000000}, /* R27_REG */ \ - {0xffffffff, 0x80000000}, /* GENERAL_REGS */ \ - {0x00000000, 0x7fffffff}, /* FLOAT_REGS */ \ - {0xffffffff, 0xffffffff} } - -/* The same information, inverted: - Return the class number of the smallest class containing - reg number REGNO. This could be a conditional expression - or could index an array. */ - -#define REGNO_REG_CLASS(REGNO) \ - ((REGNO) == 0 ? R0_REG \ - : (REGNO) == 24 ? R24_REG \ - : (REGNO) == 25 ? R25_REG \ - : (REGNO) == 27 ? R27_REG \ - : (REGNO) >= 32 && (REGNO) <= 62 ? FLOAT_REGS \ - : GENERAL_REGS) - -/* The class value for index registers, and the one for base regs. */ -#define INDEX_REG_CLASS NO_REGS -#define BASE_REG_CLASS GENERAL_REGS - -/* Get reg_class from a letter such as appears in the machine description. */ - -#define REG_CLASS_FROM_LETTER(C) \ - ((C) == 'a' ? R24_REG \ - : (C) == 'b' ? R25_REG \ - : (C) == 'c' ? R27_REG \ - : (C) == 'f' ? FLOAT_REGS \ - : (C) == 'v' ? R0_REG \ - : NO_REGS) - -/* Define this macro to change register usage conditional on target flags. */ -/* #define CONDITIONAL_REGISTER_USAGE */ - -/* The letters I, J, K, L, M, N, O, and P in a register constraint string - can be used to stand for particular ranges of immediate operands. - This macro defines what the ranges are. - C is the letter, and VALUE is a constant value. - Return 1 if VALUE is in the range specified by C. - - For Alpha: - `I' is used for the range of constants most insns can contain. - `J' is the constant zero. - `K' is used for the constant in an LDA insn. - `L' is used for the constant in a LDAH insn. - `M' is used for the constants that can be AND'ed with using a ZAP insn. - `N' is used for complemented 8-bit constants. - `O' is used for negated 8-bit constants. - `P' is used for the constants 1, 2 and 3. */ - -#define CONST_OK_FOR_LETTER_P alpha_const_ok_for_letter_p - -/* Similar, but for floating or large integer constants, and defining letters - G and H. Here VALUE is the CONST_DOUBLE rtx itself. - - For Alpha, `G' is the floating-point constant zero. `H' is a CONST_DOUBLE - that is the operand of a ZAP insn. */ - -#define CONST_DOUBLE_OK_FOR_LETTER_P alpha_const_double_ok_for_letter_p - -/* Optional extra constraints for this machine. - - For the Alpha, `Q' means that this is a memory operand but not a - reference to an unaligned location. - - `R' is a SYMBOL_REF that has SYMBOL_REF_FLAG set or is the current - function. - - 'S' is a 6-bit constant (valid for a shift insn). - - 'T' is a HIGH. - - 'U' is a symbolic operand. - - 'W' is a vector zero. */ - -#define EXTRA_CONSTRAINT alpha_extra_constraint - -/* Given an rtx X being reloaded into a reg required to be - in class CLASS, return the class of reg to actually use. - In general this is just CLASS; but on some machines - in some cases it is preferable to use a more restrictive class. */ - -#define PREFERRED_RELOAD_CLASS alpha_preferred_reload_class - -/* Loading and storing HImode or QImode values to and from memory - usually requires a scratch register. The exceptions are loading - QImode and HImode from an aligned address to a general register - unless byte instructions are permitted. - We also cannot load an unaligned address or a paradoxical SUBREG into an - FP register. */ - -#define SECONDARY_INPUT_RELOAD_CLASS(CLASS,MODE,IN) \ - alpha_secondary_reload_class((CLASS), (MODE), (IN), 1) - -#define SECONDARY_OUTPUT_RELOAD_CLASS(CLASS,MODE,OUT) \ - alpha_secondary_reload_class((CLASS), (MODE), (OUT), 0) - -/* If we are copying between general and FP registers, we need a memory - location unless the FIX extension is available. */ - -#define SECONDARY_MEMORY_NEEDED(CLASS1,CLASS2,MODE) \ - (! TARGET_FIX && (((CLASS1) == FLOAT_REGS && (CLASS2) != FLOAT_REGS) \ - || ((CLASS2) == FLOAT_REGS && (CLASS1) != FLOAT_REGS))) - -/* Specify the mode to be used for memory when a secondary memory - location is needed. If MODE is floating-point, use it. Otherwise, - widen to a word like the default. This is needed because we always - store integers in FP registers in quadword format. This whole - area is very tricky! */ -#define SECONDARY_MEMORY_NEEDED_MODE(MODE) \ - (GET_MODE_CLASS (MODE) == MODE_FLOAT ? (MODE) \ - : GET_MODE_SIZE (MODE) >= 4 ? (MODE) \ - : mode_for_size (BITS_PER_WORD, GET_MODE_CLASS (MODE), 0)) - -/* Return the maximum number of consecutive registers - needed to represent mode MODE in a register of class CLASS. */ - -#define CLASS_MAX_NREGS(CLASS, MODE) \ - ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD) - -/* Return the class of registers that cannot change mode from FROM to TO. */ - -#define CANNOT_CHANGE_MODE_CLASS(FROM, TO, CLASS) \ - (GET_MODE_SIZE (FROM) != GET_MODE_SIZE (TO) \ - ? reg_classes_intersect_p (FLOAT_REGS, CLASS) : 0) - -/* Define the cost of moving between registers of various classes. Moving - between FLOAT_REGS and anything else except float regs is expensive. - In fact, we make it quite expensive because we really don't want to - do these moves unless it is clearly worth it. Optimizations may - reduce the impact of not being able to allocate a pseudo to a - hard register. */ - -#define REGISTER_MOVE_COST(MODE, CLASS1, CLASS2) \ - (((CLASS1) == FLOAT_REGS) == ((CLASS2) == FLOAT_REGS) ? 2 \ - : TARGET_FIX ? ((CLASS1) == FLOAT_REGS ? 6 : 8) \ - : 4+2*alpha_memory_latency) - -/* A C expressions returning the cost of moving data of MODE from a register to - or from memory. - - On the Alpha, bump this up a bit. */ - -extern int alpha_memory_latency; -#define MEMORY_MOVE_COST(MODE,CLASS,IN) (2*alpha_memory_latency) - -/* Provide the cost of a branch. Exact meaning under development. */ -#define BRANCH_COST 5 - -/* Stack layout; function entry, exit and calling. */ - -/* Define this if pushing a word on the stack - makes the stack pointer a smaller address. */ -#define STACK_GROWS_DOWNWARD - -/* Define this to nonzero if the nominal address of the stack frame - is at the high-address end of the local variables; - that is, each additional local variable allocated - goes at a more negative offset in the frame. */ -/* #define FRAME_GROWS_DOWNWARD 0 */ - -/* Offset within stack frame to start allocating local variables at. - If FRAME_GROWS_DOWNWARD, this is the offset to the END of the - first local allocated. Otherwise, it is the offset to the BEGINNING - of the first local allocated. */ - -#define STARTING_FRAME_OFFSET 0 - -/* If we generate an insn to push BYTES bytes, - this says how many the stack pointer really advances by. - On Alpha, don't define this because there are no push insns. */ -/* #define PUSH_ROUNDING(BYTES) */ - -/* Define this to be nonzero if stack checking is built into the ABI. */ -#define STACK_CHECK_BUILTIN 1 - -/* Define this if the maximum size of all the outgoing args is to be - accumulated and pushed during the prologue. The amount can be - found in the variable current_function_outgoing_args_size. */ -#define ACCUMULATE_OUTGOING_ARGS 1 - -/* Offset of first parameter from the argument pointer register value. */ - -#define FIRST_PARM_OFFSET(FNDECL) 0 - -/* Definitions for register eliminations. - - We have two registers that can be eliminated on the Alpha. First, the - frame pointer register can often be eliminated in favor of the stack - pointer register. Secondly, the argument pointer register can always be - eliminated; it is replaced with either the stack or frame pointer. */ - -/* This is an array of structures. Each structure initializes one pair - of eliminable registers. The "from" register number is given first, - followed by "to". Eliminations of the same "from" register are listed - in order of preference. */ - -#define ELIMINABLE_REGS \ -{{ ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \ - { ARG_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM}, \ - { FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}, \ - { FRAME_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM}} - -/* Given FROM and TO register numbers, say whether this elimination is allowed. - Frame pointer elimination is automatically handled. - - All eliminations are valid since the cases where FP can't be - eliminated are already handled. */ - -#define CAN_ELIMINATE(FROM, TO) 1 - -/* Round up to a multiple of 16 bytes. */ -#define ALPHA_ROUND(X) (((X) + 15) & ~ 15) - -/* Define the offset between two registers, one to be eliminated, and the other - its replacement, at the start of a routine. */ -#define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \ - ((OFFSET) = alpha_initial_elimination_offset(FROM, TO)) - -/* Define this if stack space is still allocated for a parameter passed - in a register. */ -/* #define REG_PARM_STACK_SPACE */ - -/* Value is the number of bytes of arguments automatically - popped when returning from a subroutine call. - FUNDECL is the declaration node of the function (as a tree), - FUNTYPE is the data type of the function (as a tree), - or for a library call it is an identifier node for the subroutine name. - SIZE is the number of bytes of arguments passed on the stack. */ - -#define RETURN_POPS_ARGS(FUNDECL,FUNTYPE,SIZE) 0 - -/* Define how to find the value returned by a function. - VALTYPE is the data type of the value (as a tree). - If the precise function being called is known, FUNC is its FUNCTION_DECL; - otherwise, FUNC is 0. - - On Alpha the value is found in $0 for integer functions and - $f0 for floating-point functions. */ - -#define FUNCTION_VALUE(VALTYPE, FUNC) \ - function_value (VALTYPE, FUNC, VOIDmode) - -/* Define how to find the value returned by a library function - assuming the value has mode MODE. */ - -#define LIBCALL_VALUE(MODE) \ - function_value (NULL, NULL, MODE) - -/* 1 if N is a possible register number for a function value - as seen by the caller. */ - -#define FUNCTION_VALUE_REGNO_P(N) \ - ((N) == 0 || (N) == 1 || (N) == 32 || (N) == 33) - -/* 1 if N is a possible register number for function argument passing. - On Alpha, these are $16-$21 and $f16-$f21. */ - -#define FUNCTION_ARG_REGNO_P(N) \ - (((N) >= 16 && (N) <= 21) || ((N) >= 16 + 32 && (N) <= 21 + 32)) - -/* Define a data type for recording info about an argument list - during the scan of that argument list. This data type should - hold all necessary information about the function itself - and about the args processed so far, enough to enable macros - such as FUNCTION_ARG to determine where the next arg should go. - - On Alpha, this is a single integer, which is a number of words - of arguments scanned so far. - Thus 6 or more means all following args should go on the stack. */ - -#define CUMULATIVE_ARGS int - -/* Initialize a variable CUM of type CUMULATIVE_ARGS - for a call to a function whose data type is FNTYPE. - For a library call, FNTYPE is 0. */ - -#define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, INDIRECT, N_NAMED_ARGS) \ - (CUM) = 0 - -/* Define intermediate macro to compute the size (in registers) of an argument - for the Alpha. */ - -#define ALPHA_ARG_SIZE(MODE, TYPE, NAMED) \ - ((MODE) == TFmode || (MODE) == TCmode ? 1 \ - : (((MODE) == BLKmode ? int_size_in_bytes (TYPE) : GET_MODE_SIZE (MODE)) \ - + (UNITS_PER_WORD - 1)) / UNITS_PER_WORD) - -/* Update the data in CUM to advance over an argument - of mode MODE and data type TYPE. - (TYPE is null for libcalls where that information may not be available.) */ - -#define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \ - ((CUM) += \ - (targetm.calls.must_pass_in_stack (MODE, TYPE)) \ - ? 6 : ALPHA_ARG_SIZE (MODE, TYPE, NAMED)) - -/* Determine where to put an argument to a function. - Value is zero to push the argument on the stack, - or a hard register in which to store the argument. - - MODE is the argument's machine mode. - TYPE is the data type of the argument (as a tree). - This is null for libcalls where that information may - not be available. - CUM is a variable of type CUMULATIVE_ARGS which gives info about - the preceding args and about the function being called. - NAMED is nonzero if this argument is a named parameter - (otherwise it is an extra parameter matching an ellipsis). - - On Alpha the first 6 words of args are normally in registers - and the rest are pushed. */ - -#define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \ - function_arg((CUM), (MODE), (TYPE), (NAMED)) - -/* Try to output insns to set TARGET equal to the constant C if it can be - done in less than N insns. Do all computations in MODE. Returns the place - where the output has been placed if it can be done and the insns have been - emitted. If it would take more than N insns, zero is returned and no - insns and emitted. */ - -/* Define the information needed to generate branch and scc insns. This is - stored from the compare operation. Note that we can't use "rtx" here - since it hasn't been defined! */ - -struct alpha_compare -{ - struct rtx_def *op0, *op1; - int fp_p; -}; - -extern struct alpha_compare alpha_compare; - -/* Make (or fake) .linkage entry for function call. - IS_LOCAL is 0 if name is used in call, 1 if name is used in definition. */ - -/* This macro defines the start of an assembly comment. */ - -#define ASM_COMMENT_START " #" - -/* This macro produces the initial definition of a function. */ - -#define ASM_DECLARE_FUNCTION_NAME(FILE,NAME,DECL) \ - alpha_start_function(FILE,NAME,DECL); - -/* This macro closes up a function definition for the assembler. */ - -#define ASM_DECLARE_FUNCTION_SIZE(FILE,NAME,DECL) \ - alpha_end_function(FILE,NAME,DECL) - -/* Output any profiling code before the prologue. */ - -#define PROFILE_BEFORE_PROLOGUE 1 - -/* Never use profile counters. */ - -#define NO_PROFILE_COUNTERS 1 - -/* Output assembler code to FILE to increment profiler label # LABELNO - for profiling a function entry. Under OSF/1, profiling is enabled - by simply passing -pg to the assembler and linker. */ - -#define FUNCTION_PROFILER(FILE, LABELNO) - -/* EXIT_IGNORE_STACK should be nonzero if, when returning from a function, - the stack pointer does not matter. The value is tested only in - functions that have frame pointers. - No definition is equivalent to always zero. */ - -#define EXIT_IGNORE_STACK 1 - -/* Define registers used by the epilogue and return instruction. */ - -#define EPILOGUE_USES(REGNO) ((REGNO) == 26) - -/* Output assembler code for a block containing the constant parts - of a trampoline, leaving space for the variable parts. - - The trampoline should set the static chain pointer to value placed - into the trampoline and should branch to the specified routine. - Note that $27 has been set to the address of the trampoline, so we can - use it for addressability of the two data items. */ - -#define TRAMPOLINE_TEMPLATE(FILE) \ -do { \ - fprintf (FILE, "\tldq $1,24($27)\n"); \ - fprintf (FILE, "\tldq $27,16($27)\n"); \ - fprintf (FILE, "\tjmp $31,($27),0\n"); \ - fprintf (FILE, "\tnop\n"); \ - fprintf (FILE, "\t.quad 0,0\n"); \ -} while (0) - -/* Section in which to place the trampoline. On Alpha, instructions - may only be placed in a text segment. */ - -#define TRAMPOLINE_SECTION text_section - -/* Length in units of the trampoline for entering a nested function. */ - -#define TRAMPOLINE_SIZE 32 - -/* The alignment of a trampoline, in bits. */ - -#define TRAMPOLINE_ALIGNMENT 64 - -/* Emit RTL insns to initialize the variable parts of a trampoline. - FNADDR is an RTX for the address of the function's pure code. - CXT is an RTX for the static chain value for the function. */ - -#define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT) \ - alpha_initialize_trampoline (TRAMP, FNADDR, CXT, 16, 24, 8) - -/* A C expression whose value is RTL representing the value of the return - address for the frame COUNT steps up from the current frame. - FRAMEADDR is the frame pointer of the COUNT frame, or the frame pointer of - the COUNT-1 frame if RETURN_ADDR_IN_PREVIOUS_FRAME is defined. */ - -#define RETURN_ADDR_RTX alpha_return_addr - -/* Before the prologue, RA lives in $26. */ -#define INCOMING_RETURN_ADDR_RTX gen_rtx_REG (Pmode, 26) -#define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGNUM (26) -#define DWARF_ALT_FRAME_RETURN_COLUMN DWARF_FRAME_REGNUM (64) -#define DWARF_ZERO_REG 31 - -/* Describe how we implement __builtin_eh_return. */ -#define EH_RETURN_DATA_REGNO(N) ((N) < 4 ? (N) + 16 : INVALID_REGNUM) -#define EH_RETURN_STACKADJ_RTX gen_rtx_REG (Pmode, 28) -#define EH_RETURN_HANDLER_RTX \ - gen_rtx_MEM (Pmode, plus_constant (stack_pointer_rtx, \ - current_function_outgoing_args_size)) - -/* Addressing modes, and classification of registers for them. */ - -/* Macros to check register numbers against specific register classes. */ - -/* These assume that REGNO is a hard or pseudo reg number. - They give nonzero only if REGNO is a hard reg of the suitable class - or a pseudo reg currently allocated to a suitable hard reg. - Since they use reg_renumber, they are safe only once reg_renumber - has been allocated, which happens in local-alloc.c. */ - -#define REGNO_OK_FOR_INDEX_P(REGNO) 0 -#define REGNO_OK_FOR_BASE_P(REGNO) \ -((REGNO) < 32 || (unsigned) reg_renumber[REGNO] < 32 \ - || (REGNO) == 63 || reg_renumber[REGNO] == 63) - -/* Maximum number of registers that can appear in a valid memory address. */ -#define MAX_REGS_PER_ADDRESS 1 - -/* Recognize any constant value that is a valid address. For the Alpha, - there are only constants none since we want to use LDA to load any - symbolic addresses into registers. */ - -#define CONSTANT_ADDRESS_P(X) \ - (GET_CODE (X) == CONST_INT \ - && (unsigned HOST_WIDE_INT) (INTVAL (X) + 0x8000) < 0x10000) - -/* Include all constant integers and constant doubles, but not - floating-point, except for floating-point zero. */ - -#define LEGITIMATE_CONSTANT_P alpha_legitimate_constant_p - -/* The macros REG_OK_FOR..._P assume that the arg is a REG rtx - and check its validity for a certain class. - We have two alternate definitions for each of them. - The usual definition accepts all pseudo regs; the other rejects - them unless they have been allocated suitable hard regs. - The symbol REG_OK_STRICT causes the latter definition to be used. - - Most source files want to accept pseudo regs in the hope that - they will get allocated to the class that the insn wants them to be in. - Source files for reload pass need to be strict. - After reload, it makes no difference, since pseudo regs have - been eliminated by then. */ - -/* Nonzero if X is a hard reg that can be used as an index - or if it is a pseudo reg. */ -#define REG_OK_FOR_INDEX_P(X) 0 - -/* Nonzero if X is a hard reg that can be used as a base reg - or if it is a pseudo reg. */ -#define NONSTRICT_REG_OK_FOR_BASE_P(X) \ - (REGNO (X) < 32 || REGNO (X) == 63 || REGNO (X) >= FIRST_PSEUDO_REGISTER) - -/* ??? Nonzero if X is the frame pointer, or some virtual register - that may eliminate to the frame pointer. These will be allowed to - have offsets greater than 32K. This is done because register - elimination offsets will change the hi/lo split, and if we split - before reload, we will require additional instructions. */ -#define NONSTRICT_REG_OK_FP_BASE_P(X) \ - (REGNO (X) == 31 || REGNO (X) == 63 \ - || (REGNO (X) >= FIRST_PSEUDO_REGISTER \ - && REGNO (X) < LAST_VIRTUAL_REGISTER)) - -/* Nonzero if X is a hard reg that can be used as a base reg. */ -#define STRICT_REG_OK_FOR_BASE_P(X) REGNO_OK_FOR_BASE_P (REGNO (X)) - -#ifdef REG_OK_STRICT -#define REG_OK_FOR_BASE_P(X) STRICT_REG_OK_FOR_BASE_P (X) -#else -#define REG_OK_FOR_BASE_P(X) NONSTRICT_REG_OK_FOR_BASE_P (X) -#endif - -/* GO_IF_LEGITIMATE_ADDRESS recognizes an RTL expression that is a - valid memory address for an instruction. */ - -#ifdef REG_OK_STRICT -#define GO_IF_LEGITIMATE_ADDRESS(MODE, X, WIN) \ -do { \ - if (alpha_legitimate_address_p (MODE, X, 1)) \ - goto WIN; \ -} while (0) -#else -#define GO_IF_LEGITIMATE_ADDRESS(MODE, X, WIN) \ -do { \ - if (alpha_legitimate_address_p (MODE, X, 0)) \ - goto WIN; \ -} while (0) -#endif - -/* Try machine-dependent ways of modifying an illegitimate address - to be legitimate. If we find one, return the new, valid address. - This macro is used in only one place: `memory_address' in explow.c. */ - -#define LEGITIMIZE_ADDRESS(X,OLDX,MODE,WIN) \ -do { \ - rtx new_x = alpha_legitimize_address (X, NULL_RTX, MODE); \ - if (new_x) \ - { \ - X = new_x; \ - goto WIN; \ - } \ -} while (0) - -/* Try a machine-dependent way of reloading an illegitimate address - operand. If we find one, push the reload and jump to WIN. This - macro is used in only one place: `find_reloads_address' in reload.c. */ - -#define LEGITIMIZE_RELOAD_ADDRESS(X,MODE,OPNUM,TYPE,IND_L,WIN) \ -do { \ - rtx new_x = alpha_legitimize_reload_address (X, MODE, OPNUM, TYPE, IND_L); \ - if (new_x) \ - { \ - X = new_x; \ - goto WIN; \ - } \ -} while (0) - -/* Go to LABEL if ADDR (a legitimate address expression) - has an effect that depends on the machine mode it is used for. - On the Alpha this is true only for the unaligned modes. We can - simplify this test since we know that the address must be valid. */ - -#define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL) \ -{ if (GET_CODE (ADDR) == AND) goto LABEL; } - -/* Specify the machine mode that this machine uses - for the index in the tablejump instruction. */ -#define CASE_VECTOR_MODE SImode - -/* Define as C expression which evaluates to nonzero if the tablejump - instruction expects the table to contain offsets from the address of the - table. - - Do not define this if the table should contain absolute addresses. - On the Alpha, the table is really GP-relative, not relative to the PC - of the table, but we pretend that it is PC-relative; this should be OK, - but we should try to find some better way sometime. */ -#define CASE_VECTOR_PC_RELATIVE 1 - -/* Define this as 1 if `char' should by default be signed; else as 0. */ -#define DEFAULT_SIGNED_CHAR 1 - -/* Max number of bytes we can move to or from memory - in one reasonably fast instruction. */ - -#define MOVE_MAX 8 - -/* If a memory-to-memory move would take MOVE_RATIO or more simple - move-instruction pairs, we will do a movmem or libcall instead. - - Without byte/word accesses, we want no more than four instructions; - with, several single byte accesses are better. */ - -#define MOVE_RATIO (TARGET_BWX ? 7 : 2) - -/* Largest number of bytes of an object that can be placed in a register. - On the Alpha we have plenty of registers, so use TImode. */ -#define MAX_FIXED_MODE_SIZE GET_MODE_BITSIZE (TImode) - -/* Nonzero if access to memory by bytes is no faster than for words. - Also nonzero if doing byte operations (specifically shifts) in registers - is undesirable. - - On the Alpha, we want to not use the byte operation and instead use - masking operations to access fields; these will save instructions. */ - -#define SLOW_BYTE_ACCESS 1 - -/* Define if operations between registers always perform the operation - on the full register even if a narrower mode is specified. */ -#define WORD_REGISTER_OPERATIONS - -/* Define if loading in MODE, an integral mode narrower than BITS_PER_WORD - will either zero-extend or sign-extend. The value of this macro should - be the code that says which one of the two operations is implicitly - done, UNKNOWN if none. */ -#define LOAD_EXTEND_OP(MODE) ((MODE) == SImode ? SIGN_EXTEND : ZERO_EXTEND) - -/* Define if loading short immediate values into registers sign extends. */ -#define SHORT_IMMEDIATES_SIGN_EXTEND - -/* Value is 1 if truncating an integer of INPREC bits to OUTPREC bits - is done just by pretending it is already truncated. */ -#define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1 - -/* The CIX ctlz and cttz instructions return 64 for zero. */ -#define CLZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) ((VALUE) = 64, TARGET_CIX) -#define CTZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) ((VALUE) = 64, TARGET_CIX) - -/* Define the value returned by a floating-point comparison instruction. */ - -#define FLOAT_STORE_FLAG_VALUE(MODE) \ - REAL_VALUE_ATOF ((TARGET_FLOAT_VAX ? "0.5" : "2.0"), (MODE)) - -/* Canonicalize a comparison from one we don't have to one we do have. */ - -#define CANONICALIZE_COMPARISON(CODE,OP0,OP1) \ - do { \ - if (((CODE) == GE || (CODE) == GT || (CODE) == GEU || (CODE) == GTU) \ - && (GET_CODE (OP1) == REG || (OP1) == const0_rtx)) \ - { \ - rtx tem = (OP0); \ - (OP0) = (OP1); \ - (OP1) = tem; \ - (CODE) = swap_condition (CODE); \ - } \ - if (((CODE) == LT || (CODE) == LTU) \ - && GET_CODE (OP1) == CONST_INT && INTVAL (OP1) == 256) \ - { \ - (CODE) = (CODE) == LT ? LE : LEU; \ - (OP1) = GEN_INT (255); \ - } \ - } while (0) - -/* Specify the machine mode that pointers have. - After generation of rtl, the compiler makes no further distinction - between pointers and any other objects of this machine mode. */ -#define Pmode DImode - -/* Mode of a function address in a call instruction (for indexing purposes). */ - -#define FUNCTION_MODE Pmode - -/* Define this if addresses of constant functions - shouldn't be put through pseudo regs where they can be cse'd. - Desirable on machines where ordinary constants are expensive - but a CALL with constant address is cheap. - - We define this on the Alpha so that gen_call and gen_call_value - get to see the SYMBOL_REF (for the hint field of the jsr). It will - then copy it into a register, thus actually letting the address be - cse'ed. */ - -#define NO_FUNCTION_CSE - -/* Define this to be nonzero if shift instructions ignore all but the low-order - few bits. */ -#define SHIFT_COUNT_TRUNCATED 1 - -/* Control the assembler format that we output. */ - -/* Output to assembler file text saying following lines - may contain character constants, extra white space, comments, etc. */ -#define ASM_APP_ON (TARGET_EXPLICIT_RELOCS ? "\t.set\tmacro\n" : "") - -/* Output to assembler file text saying following lines - no longer contain unusual constructs. */ -#define ASM_APP_OFF (TARGET_EXPLICIT_RELOCS ? "\t.set\tnomacro\n" : "") - -#define TEXT_SECTION_ASM_OP "\t.text" - -/* Output before read-only data. */ - -#define READONLY_DATA_SECTION_ASM_OP "\t.rdata" - -/* Output before writable data. */ - -#define DATA_SECTION_ASM_OP "\t.data" - -/* How to refer to registers in assembler output. - This sequence is indexed by compiler's hard-register-number (see above). */ - -#define REGISTER_NAMES \ -{"$0", "$1", "$2", "$3", "$4", "$5", "$6", "$7", "$8", \ - "$9", "$10", "$11", "$12", "$13", "$14", "$15", \ - "$16", "$17", "$18", "$19", "$20", "$21", "$22", "$23", \ - "$24", "$25", "$26", "$27", "$28", "$29", "$30", "AP", \ - "$f0", "$f1", "$f2", "$f3", "$f4", "$f5", "$f6", "$f7", "$f8", \ - "$f9", "$f10", "$f11", "$f12", "$f13", "$f14", "$f15", \ - "$f16", "$f17", "$f18", "$f19", "$f20", "$f21", "$f22", "$f23",\ - "$f24", "$f25", "$f26", "$f27", "$f28", "$f29", "$f30", "FP"} - -/* Strip name encoding when emitting labels. */ - -#define ASM_OUTPUT_LABELREF(STREAM, NAME) \ -do { \ - const char *name_ = NAME; \ - if (*name_ == '@' || *name_ == '%') \ - name_ += 2; \ - if (*name_ == '*') \ - name_++; \ - else \ - fputs (user_label_prefix, STREAM); \ - fputs (name_, STREAM); \ -} while (0) - -/* Globalizing directive for a label. */ -#define GLOBAL_ASM_OP "\t.globl " - -/* The prefix to add to user-visible assembler symbols. */ - -#define USER_LABEL_PREFIX "" - -/* This is how to output a label for a jump table. Arguments are the same as - for (*targetm.asm_out.internal_label), except the insn for the jump table is - passed. */ - -#define ASM_OUTPUT_CASE_LABEL(FILE,PREFIX,NUM,TABLEINSN) \ -{ ASM_OUTPUT_ALIGN (FILE, 2); (*targetm.asm_out.internal_label) (FILE, PREFIX, NUM); } - -/* This is how to store into the string LABEL - the symbol_ref name of an internal numbered label where - PREFIX is the class of label and NUM is the number within the class. - This is suitable for output with `assemble_name'. */ - -#define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \ - sprintf ((LABEL), "*$%s%ld", (PREFIX), (long)(NUM)) - -/* We use the default ASCII-output routine, except that we don't write more - than 50 characters since the assembler doesn't support very long lines. */ - -#define ASM_OUTPUT_ASCII(MYFILE, MYSTRING, MYLENGTH) \ - do { \ - FILE *_hide_asm_out_file = (MYFILE); \ - const unsigned char *_hide_p = (const unsigned char *) (MYSTRING); \ - int _hide_thissize = (MYLENGTH); \ - int _size_so_far = 0; \ - { \ - FILE *asm_out_file = _hide_asm_out_file; \ - const unsigned char *p = _hide_p; \ - int thissize = _hide_thissize; \ - int i; \ - fprintf (asm_out_file, "\t.ascii \""); \ - \ - for (i = 0; i < thissize; i++) \ - { \ - register int c = p[i]; \ - \ - if (_size_so_far ++ > 50 && i < thissize - 4) \ - _size_so_far = 0, fprintf (asm_out_file, "\"\n\t.ascii \""); \ - \ - if (c == '\"' || c == '\\') \ - putc ('\\', asm_out_file); \ - if (c >= ' ' && c < 0177) \ - putc (c, asm_out_file); \ - else \ - { \ - fprintf (asm_out_file, "\\%o", c); \ - /* After an octal-escape, if a digit follows, \ - terminate one string constant and start another. \ - The VAX assembler fails to stop reading the escape \ - after three digits, so this is the only way we \ - can get it to parse the data properly. */ \ - if (i < thissize - 1 && ISDIGIT (p[i + 1])) \ - _size_so_far = 0, fprintf (asm_out_file, "\"\n\t.ascii \""); \ - } \ - } \ - fprintf (asm_out_file, "\"\n"); \ - } \ - } \ - while (0) - -/* This is how to output an element of a case-vector that is relative. */ - -#define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \ - fprintf (FILE, "\t.%s $L%d\n", TARGET_ABI_WINDOWS_NT ? "long" : "gprel32", \ - (VALUE)) - -/* This is how to output an assembler line - that says to advance the location counter - to a multiple of 2**LOG bytes. */ - -#define ASM_OUTPUT_ALIGN(FILE,LOG) \ - if ((LOG) != 0) \ - fprintf (FILE, "\t.align %d\n", LOG); - -/* This is how to advance the location counter by SIZE bytes. */ - -#define ASM_OUTPUT_SKIP(FILE,SIZE) \ - fprintf (FILE, "\t.space "HOST_WIDE_INT_PRINT_UNSIGNED"\n", (SIZE)) - -/* This says how to output an assembler line - to define a global common symbol. */ - -#define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED) \ -( fputs ("\t.comm ", (FILE)), \ - assemble_name ((FILE), (NAME)), \ - fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED"\n", (SIZE))) - -/* This says how to output an assembler line - to define a local common symbol. */ - -#define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE,ROUNDED) \ -( fputs ("\t.lcomm ", (FILE)), \ - assemble_name ((FILE), (NAME)), \ - fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED"\n", (SIZE))) - - -/* Print operand X (an rtx) in assembler syntax to file FILE. - CODE is a letter or dot (`z' in `%z0') or 0 if no letter was specified. - For `%' followed by punctuation, CODE is the punctuation and X is null. */ - -#define PRINT_OPERAND(FILE, X, CODE) print_operand (FILE, X, CODE) - -/* Determine which codes are valid without a following integer. These must - not be alphabetic. - - ~ Generates the name of the current function. - - / Generates the instruction suffix. The TRAP_SUFFIX and ROUND_SUFFIX - attributes are examined to determine what is appropriate. - - , Generates single precision suffix for floating point - instructions (s for IEEE, f for VAX) - - - Generates double precision suffix for floating point - instructions (t for IEEE, g for VAX) - - + Generates a nop instruction after a noreturn call at the very end - of the function - */ - -#define PRINT_OPERAND_PUNCT_VALID_P(CODE) \ - ((CODE) == '/' || (CODE) == ',' || (CODE) == '-' || (CODE) == '~' \ - || (CODE) == '#' || (CODE) == '*' || (CODE) == '&' || (CODE) == '+') - -/* Print a memory address as an operand to reference that memory location. */ - -#define PRINT_OPERAND_ADDRESS(FILE, ADDR) \ - print_operand_address((FILE), (ADDR)) - -/* Implement `va_start' for varargs and stdarg. */ -#define EXPAND_BUILTIN_VA_START(valist, nextarg) \ - alpha_va_start (valist, nextarg) - -/* Tell collect that the object format is ECOFF. */ -#define OBJECT_FORMAT_COFF -#define EXTENDED_COFF - -/* If we use NM, pass -g to it so it only lists globals. */ -#define NM_FLAGS "-pg" - -/* Definitions for debugging. */ - -#define SDB_DEBUGGING_INFO 1 /* generate info for mips-tfile */ -#define DBX_DEBUGGING_INFO 1 /* generate embedded stabs */ -#define MIPS_DEBUGGING_INFO 1 /* MIPS specific debugging info */ - -#ifndef PREFERRED_DEBUGGING_TYPE /* assume SDB_DEBUGGING_INFO */ -#define PREFERRED_DEBUGGING_TYPE SDB_DEBUG -#endif - - -/* Correct the offset of automatic variables and arguments. Note that - the Alpha debug format wants all automatic variables and arguments - to be in terms of two different offsets from the virtual frame pointer, - which is the stack pointer before any adjustment in the function. - The offset for the argument pointer is fixed for the native compiler, - it is either zero (for the no arguments case) or large enough to hold - all argument registers. - The offset for the auto pointer is the fourth argument to the .frame - directive (local_offset). - To stay compatible with the native tools we use the same offsets - from the virtual frame pointer and adjust the debugger arg/auto offsets - accordingly. These debugger offsets are set up in output_prolog. */ - -extern long alpha_arg_offset; -extern long alpha_auto_offset; -#define DEBUGGER_AUTO_OFFSET(X) \ - ((GET_CODE (X) == PLUS ? INTVAL (XEXP (X, 1)) : 0) + alpha_auto_offset) -#define DEBUGGER_ARG_OFFSET(OFFSET, X) (OFFSET + alpha_arg_offset) - -/* mips-tfile doesn't understand .stabd directives. */ -#define DBX_OUTPUT_SOURCE_LINE(STREAM, LINE, COUNTER) do { \ - dbxout_begin_stabn_sline (LINE); \ - dbxout_stab_value_internal_label ("LM", &COUNTER); \ -} while (0) - -/* We want to use MIPS-style .loc directives for SDB line numbers. */ -extern int num_source_filenames; -#define SDB_OUTPUT_SOURCE_LINE(STREAM, LINE) \ - fprintf (STREAM, "\t.loc\t%d %d\n", num_source_filenames, LINE) - -#define ASM_OUTPUT_SOURCE_FILENAME(STREAM, NAME) \ - alpha_output_filename (STREAM, NAME) - -/* mips-tfile.c limits us to strings of one page. We must underestimate this - number, because the real length runs past this up to the next - continuation point. This is really a dbxout.c bug. */ -#define DBX_CONTIN_LENGTH 3000 - -/* By default, turn on GDB extensions. */ -#define DEFAULT_GDB_EXTENSIONS 1 - -/* Stabs-in-ECOFF can't handle dbxout_function_end(). */ -#define NO_DBX_FUNCTION_END 1 - -/* If we are smuggling stabs through the ALPHA ECOFF object - format, put a comment in front of the .stab<x> operation so - that the ALPHA assembler does not choke. The mips-tfile program - will correctly put the stab into the object file. */ - -#define ASM_STABS_OP ((TARGET_GAS) ? "\t.stabs\t" : " #.stabs\t") -#define ASM_STABN_OP ((TARGET_GAS) ? "\t.stabn\t" : " #.stabn\t") -#define ASM_STABD_OP ((TARGET_GAS) ? "\t.stabd\t" : " #.stabd\t") - -/* Forward references to tags are allowed. */ -#define SDB_ALLOW_FORWARD_REFERENCES - -/* Unknown tags are also allowed. */ -#define SDB_ALLOW_UNKNOWN_REFERENCES - -#define PUT_SDB_DEF(a) \ -do { \ - fprintf (asm_out_file, "\t%s.def\t", \ - (TARGET_GAS) ? "" : "#"); \ - ASM_OUTPUT_LABELREF (asm_out_file, a); \ - fputc (';', asm_out_file); \ -} while (0) - -#define PUT_SDB_PLAIN_DEF(a) \ -do { \ - fprintf (asm_out_file, "\t%s.def\t.%s;", \ - (TARGET_GAS) ? "" : "#", (a)); \ -} while (0) - -#define PUT_SDB_TYPE(a) \ -do { \ - fprintf (asm_out_file, "\t.type\t0x%x;", (a)); \ -} while (0) - -/* For block start and end, we create labels, so that - later we can figure out where the correct offset is. - The normal .ent/.end serve well enough for functions, - so those are just commented out. */ - -extern int sdb_label_count; /* block start/end next label # */ - -#define PUT_SDB_BLOCK_START(LINE) \ -do { \ - fprintf (asm_out_file, \ - "$Lb%d:\n\t%s.begin\t$Lb%d\t%d\n", \ - sdb_label_count, \ - (TARGET_GAS) ? "" : "#", \ - sdb_label_count, \ - (LINE)); \ - sdb_label_count++; \ -} while (0) - -#define PUT_SDB_BLOCK_END(LINE) \ -do { \ - fprintf (asm_out_file, \ - "$Le%d:\n\t%s.bend\t$Le%d\t%d\n", \ - sdb_label_count, \ - (TARGET_GAS) ? "" : "#", \ - sdb_label_count, \ - (LINE)); \ - sdb_label_count++; \ -} while (0) - -#define PUT_SDB_FUNCTION_START(LINE) - -#define PUT_SDB_FUNCTION_END(LINE) - -#define PUT_SDB_EPILOGUE_END(NAME) ((void)(NAME)) - -/* Macros for mips-tfile.c to encapsulate stabs in ECOFF, and for - mips-tdump.c to print them out. - - These must match the corresponding definitions in gdb/mipsread.c. - Unfortunately, gcc and gdb do not currently share any directories. */ - -#define CODE_MASK 0x8F300 -#define MIPS_IS_STAB(sym) (((sym)->index & 0xFFF00) == CODE_MASK) -#define MIPS_MARK_STAB(code) ((code)+CODE_MASK) -#define MIPS_UNMARK_STAB(code) ((code)-CODE_MASK) - -/* Override some mips-tfile definitions. */ - -#define SHASH_SIZE 511 -#define THASH_SIZE 55 - -/* Align ecoff symbol tables to avoid OSF1/1.3 nm complaints. */ - -#define ALIGN_SYMTABLE_OFFSET(OFFSET) (((OFFSET) + 7) & ~7) - -/* The system headers under Alpha systems are generally C++-aware. */ -#define NO_IMPLICIT_EXTERN_C |