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Diffstat (limited to 'gcc/config/m68k/m68k.h')
| -rwxr-xr-x | gcc/config/m68k/m68k.h | 2139 |
1 files changed, 0 insertions, 2139 deletions
diff --git a/gcc/config/m68k/m68k.h b/gcc/config/m68k/m68k.h deleted file mode 100755 index 4531908..0000000 --- a/gcc/config/m68k/m68k.h +++ /dev/null @@ -1,2139 +0,0 @@ -/* Definitions of target machine for GNU compiler. Sun 68000/68020 version. - Copyright (C) 1987, 88, 93-98, 1999 Free Software Foundation, Inc. - -This file is part of GNU CC. - -GNU CC is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2, or (at your option) -any later version. - -GNU CC is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - -You should have received a copy of the GNU General Public License -along with GNU CC; see the file COPYING. If not, write to -the Free Software Foundation, 59 Temple Place - Suite 330, -Boston, MA 02111-1307, USA. */ - - -/* Note that some other tm.h files include this one and then override - many of the definitions that relate to assembler syntax. */ - - -/* Names to predefine in the preprocessor for this target machine. */ - -/* See sun3.h, sun2.h, isi.h for different CPP_PREDEFINES. */ - -/* Print subsidiary information on the compiler version in use. */ -#ifdef MOTOROLA -#define TARGET_VERSION fprintf (stderr, " (68k, Motorola syntax)"); -#else -#define TARGET_VERSION fprintf (stderr, " (68k, MIT syntax)"); -#endif - -/* Define SUPPORT_SUN_FPA to include support for generating code for - the Sun Floating Point Accelerator, an optional product for Sun 3 - machines. By default, it is not defined. Avoid defining it unless - you need to output code for the Sun3+FPA architecture, as it has the - effect of slowing down the register set operations in hard-reg-set.h - (total number of registers will exceed number of bits in a long, - if defined, causing the set operations to expand to loops). - SUPPORT_SUN_FPA is typically defined in sun3.h. */ - -/* Run-time compilation parameters selecting different hardware subsets. */ - -extern int target_flags; - -/* Macros used in the machine description to test the flags. */ - -/* Compile for a 68020 (not a 68000 or 68010). */ -#define MASK_68020 1 -#define TARGET_68020 (target_flags & MASK_68020) - -/* Compile 68881 insns for floating point (not library calls). */ -#define MASK_68881 2 -#define TARGET_68881 (target_flags & MASK_68881) - -/* Compile using 68020 bitfield insns. */ -#define MASK_BITFIELD 4 -#define TARGET_BITFIELD (target_flags & MASK_BITFIELD) - -/* Compile using rtd insn calling sequence. - This will not work unless you use prototypes at least - for all functions that can take varying numbers of args. */ -#define MASK_RTD 8 -#define TARGET_RTD (target_flags & MASK_RTD) - -/* Compile passing first two args in regs 0 and 1. - This exists only to test compiler features that will - be needed for RISC chips. It is not usable - and is not intended to be usable on this cpu. */ -#define MASK_REGPARM 16 -#define TARGET_REGPARM (target_flags & MASK_REGPARM) - -/* Compile with 16-bit `int'. */ -#define MASK_SHORT 32 -#define TARGET_SHORT (target_flags & MASK_SHORT) - -/* Compile with special insns for Sun FPA. */ -#define MASK_FPA 64 -#define TARGET_FPA (target_flags & MASK_FPA) - -/* Compile (actually, link) for Sun SKY board. */ -#define MASK_SKY 128 -#define TARGET_SKY (target_flags & MASK_SKY) - -/* Optimize for 68040, but still allow execution on 68020 - (-m68020-40 or -m68040). - The 68040 will execute all 68030 and 68881/2 instructions, but some - of them must be emulated in software by the OS. When TARGET_68040 is - turned on, these instructions won't be used. This code will still - run on a 68030 and 68881/2. */ -#define MASK_68040 256 -#define TARGET_68040 (target_flags & MASK_68040) - -/* Use the 68040-only fp instructions (-m68040 or -m68060). */ -#define MASK_68040_ONLY 512 -#define TARGET_68040_ONLY (target_flags & MASK_68040_ONLY) - -/* Optimize for 68060, but still allow execution on 68020 - (-m68020-60 or -m68060). - The 68060 will execute all 68030 and 68881/2 instructions, but some - of them must be emulated in software by the OS. When TARGET_68060 is - turned on, these instructions won't be used. This code will still - run on a 68030 and 68881/2. */ -#define MASK_68060 1024 -#define TARGET_68060 (target_flags & MASK_68060) - -/* Compile for mcf5200 */ -#define MASK_5200 2048 -#define TARGET_5200 (target_flags & MASK_5200) - -/* Align ints to a word boundary. This breaks compatibility with the - published ABI's for structures containing ints, but produces faster - code on cpus with 32 bit busses (020, 030, 040, 060, CPU32+, coldfire). - It's required for coldfire cpus without a misalignment module. */ -#define MASK_ALIGN_INT 4096 -#define TARGET_ALIGN_INT (target_flags & MASK_ALIGN_INT) - -/* Compile for a CPU32 */ - /* A 68020 without bitfields is a good heuristic for a CPU32 */ -#define TARGET_CPU32 (TARGET_68020 && !TARGET_BITFIELD) - -/* Macro to define tables used to set the flags. - This is a list in braces of pairs in braces, - each pair being { "NAME", VALUE } - where VALUE is the bits to set or minus the bits to clear. - An empty string NAME is used to identify the default VALUE. */ - -#define TARGET_SWITCHES \ - { { "68020", - (MASK_5200|MASK_68060|MASK_68040|MASK_68040_ONLY)}, \ - { "c68020", - (MASK_5200|MASK_68060|MASK_68040|MASK_68040_ONLY)}, \ - { "68020", (MASK_68020|MASK_BITFIELD)}, \ - { "c68020", (MASK_68020|MASK_BITFIELD)}, \ - { "68000", - (MASK_5200|MASK_68060|MASK_68040|MASK_68040_ONLY \ - |MASK_68020|MASK_BITFIELD|MASK_68881)}, \ - { "c68000", - (MASK_5200|MASK_68060|MASK_68040|MASK_68040_ONLY \ - |MASK_68020|MASK_BITFIELD|MASK_68881)}, \ - { "bitfield", MASK_BITFIELD}, \ - { "nobitfield", - MASK_BITFIELD}, \ - { "rtd", MASK_RTD}, \ - { "nortd", - MASK_RTD}, \ - { "short", MASK_SHORT}, \ - { "noshort", - MASK_SHORT}, \ - { "fpa", -(MASK_SKY|MASK_68040_ONLY|MASK_68881)}, \ - { "fpa", MASK_FPA}, \ - { "nofpa", - MASK_FPA}, \ - { "sky", -(MASK_FPA|MASK_68040_ONLY|MASK_68881)}, \ - { "sky", MASK_SKY}, \ - { "nosky", - MASK_SKY}, \ - { "68881", - (MASK_FPA|MASK_SKY)}, \ - { "68881", MASK_68881}, \ - { "soft-float", - (MASK_FPA|MASK_SKY|MASK_68040_ONLY|MASK_68881)}, \ - { "68020-40", -(MASK_5200|MASK_68060|MASK_68040_ONLY)}, \ - { "68020-40", (MASK_BITFIELD|MASK_68881|MASK_68020|MASK_68040)}, \ - { "68020-60", -(MASK_5200|MASK_68040_ONLY)}, \ - { "68020-60", (MASK_BITFIELD|MASK_68881|MASK_68020|MASK_68040 \ - |MASK_68060)}, \ - { "68030", - (MASK_5200|MASK_68060|MASK_68040|MASK_68040_ONLY)}, \ - { "68030", (MASK_68020|MASK_BITFIELD)}, \ - { "68040", - (MASK_5200|MASK_68060)}, \ - { "68040", (MASK_68020|MASK_68881|MASK_BITFIELD \ - |MASK_68040_ONLY|MASK_68040)}, \ - { "68060", - (MASK_5200|MASK_68040)}, \ - { "68060", (MASK_68020|MASK_68881|MASK_BITFIELD \ - |MASK_68040_ONLY|MASK_68060)}, \ - { "5200", - (MASK_68060|MASK_68040|MASK_68040_ONLY|MASK_68020 \ - |MASK_BITFIELD|MASK_68881)}, \ - { "5200", (MASK_5200)}, \ - { "68851", 0}, \ - { "no-68851", 0}, \ - { "68302", - (MASK_5200|MASK_68060|MASK_68040|MASK_68040_ONLY \ - |MASK_68020|MASK_BITFIELD|MASK_68881)}, \ - { "68332", - (MASK_5200|MASK_68060|MASK_68040|MASK_68040_ONLY \ - |MASK_BITFIELD|MASK_68881)}, \ - { "68332", MASK_68020}, \ - { "cpu32", - (MASK_5200|MASK_68060|MASK_68040|MASK_68040_ONLY \ - |MASK_BITFIELD|MASK_68881)}, \ - { "cpu32", MASK_68020}, \ - { "align-int", MASK_ALIGN_INT }, \ - { "no-align-int", -MASK_ALIGN_INT }, \ - SUBTARGET_SWITCHES \ - { "", TARGET_DEFAULT}} -/* TARGET_DEFAULT is defined in sun*.h and isi.h, etc. */ - -/* This macro is similar to `TARGET_SWITCHES' but defines names of - command options that have values. Its definition is an - initializer with a subgrouping for each command option. - - Each subgrouping contains a string constant, that defines the - fixed part of the option name, and the address of a variable. The - variable, type `char *', is set to the variable part of the given - option if the fixed part matches. The actual option name is made - by appending `-m' to the specified name. */ -#define TARGET_OPTIONS \ -{ { "align-loops=", &m68k_align_loops_string }, \ - { "align-jumps=", &m68k_align_jumps_string }, \ - { "align-functions=", &m68k_align_funcs_string }, \ - SUBTARGET_OPTIONS \ -} - -/* Sometimes certain combinations of command options do not make - sense on a particular target machine. You can define a macro - `OVERRIDE_OPTIONS' to take account of this. This macro, if - defined, is executed once just after all the command options have - been parsed. - - Don't use this macro to turn on various extra optimizations for - `-O'. That is what `OPTIMIZATION_OPTIONS' is for. */ - -#define OVERRIDE_OPTIONS \ -{ \ - override_options(); \ - if (! TARGET_68020 && flag_pic == 2) \ - error("-fPIC is not currently supported on the 68000 or 68010\n"); \ - SUBTARGET_OVERRIDE_OPTIONS; \ -} - -/* These are meant to be redefined in the host dependent files */ -#define SUBTARGET_SWITCHES -#define SUBTARGET_OPTIONS -#define SUBTARGET_OVERRIDE_OPTIONS - -/* target machine storage layout */ - -/* Define for XFmode extended real floating point support. - This will automatically cause REAL_ARITHMETIC to be defined. */ -#define LONG_DOUBLE_TYPE_SIZE 96 - -/* Define if you don't want extended real, but do want to use the - software floating point emulator for REAL_ARITHMETIC and - decimal <-> binary conversion. */ -/* #define REAL_ARITHMETIC */ - -/* Define this if most significant bit is lowest numbered - in instructions that operate on numbered bit-fields. - This is true for 68020 insns such as bfins and bfexts. - We make it true always by avoiding using the single-bit insns - except in special cases with constant bit numbers. */ -#define BITS_BIG_ENDIAN 1 - -/* Define this if most significant byte of a word is the lowest numbered. */ -/* That is true on the 68000. */ -#define BYTES_BIG_ENDIAN 1 - -/* Define this if most significant word of a multiword number is the lowest - numbered. */ -/* For 68000 we can decide arbitrarily - since there are no machine instructions for them. - So let's be consistent. */ -#define WORDS_BIG_ENDIAN 1 - -/* number of bits in an addressable storage unit */ -#define BITS_PER_UNIT 8 - -/* Width in bits of a "word", which is the contents of a machine register. - Note that this is not necessarily the width of data type `int'; - if using 16-bit ints on a 68000, this would still be 32. - But on a machine with 16-bit registers, this would be 16. */ -#define BITS_PER_WORD 32 - -/* Width of a word, in units (bytes). */ -#define UNITS_PER_WORD 4 - -/* Width in bits of a pointer. - See also the macro `Pmode' defined below. */ -#define POINTER_SIZE 32 - -/* Allocation boundary (in *bits*) for storing arguments in argument list. */ -#define PARM_BOUNDARY (TARGET_SHORT ? 16 : 32) - -/* Boundary (in *bits*) on which stack pointer should be aligned. */ -#define STACK_BOUNDARY 16 - -/* Allocation boundary (in *bits*) for the code of a function. */ -#define FUNCTION_BOUNDARY (1 << (m68k_align_funcs + 3)) - -/* Alignment of field after `int : 0' in a structure. */ -#define EMPTY_FIELD_BOUNDARY 16 - -/* No data type wants to be aligned rounder than this. - Most published ABIs say that ints should be aligned on 16 bit - boundaries, but cpus with 32 bit busses get better performance - aligned on 32 bit boundaries. Coldfires without a misalignment - module require 32 bit alignment. */ -#define BIGGEST_ALIGNMENT (TARGET_ALIGN_INT ? 32 : 16) - -/* Set this nonzero if move instructions will actually fail to work - when given unaligned data. */ -#define STRICT_ALIGNMENT 1 - -/* Maximum power of 2 that code can be aligned to. */ -#define MAX_CODE_ALIGN 2 /* 4 byte alignment */ - -/* Align loop starts for optimal branching. */ -#define LOOP_ALIGN(LABEL) (m68k_align_loops) - -/* This is how to align an instruction for optimal branching. */ -#define LABEL_ALIGN_AFTER_BARRIER(LABEL) (m68k_align_jumps) - -#define SELECT_RTX_SECTION(MODE, X) \ -{ \ - if (!flag_pic) \ - readonly_data_section(); \ - else if (LEGITIMATE_PIC_OPERAND_P (X)) \ - readonly_data_section(); \ - else \ - data_section(); \ -} - -/* Define number of bits in most basic integer type. - (If undefined, default is BITS_PER_WORD). */ - -#define INT_TYPE_SIZE (TARGET_SHORT ? 16 : 32) - -/* Define these to avoid dependence on meaning of `int'. - Note that WCHAR_TYPE_SIZE is used in cexp.y, - where TARGET_SHORT is not available. */ - -#define WCHAR_TYPE "long int" -#define WCHAR_TYPE_SIZE 32 - -/* 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. - For the 68000, we give the data registers numbers 0-7, - the address registers numbers 010-017, - and the 68881 floating point registers numbers 020-027. */ -#ifndef SUPPORT_SUN_FPA -#define FIRST_PSEUDO_REGISTER 24 -#else -#define FIRST_PSEUDO_REGISTER 56 -#endif - -/* This defines the register which is used to hold the offset table for PIC. */ -#define PIC_OFFSET_TABLE_REGNUM 13 - -/* Used to output a (use pic_offset_table_rtx) so that we - always save/restore a5 in functions that use PIC relocation - at *any* time during the compilation process. */ -#define FINALIZE_PIC finalize_pic() - -#ifndef SUPPORT_SUN_FPA - -/* 1 for registers that have pervasive standard uses - and are not available for the register allocator. - On the 68000, only the stack pointer is such. */ - -#define FIXED_REGISTERS \ - {/* Data registers. */ \ - 0, 0, 0, 0, 0, 0, 0, 0, \ - \ - /* Address registers. */ \ - 0, 0, 0, 0, 0, 0, 0, 1, \ - \ - /* Floating point registers \ - (if available). */ \ - 0, 0, 0, 0, 0, 0, 0, 0 } - -/* 1 for registers not available across function calls. - These must include the FIXED_REGISTERS and also any - registers that can be used without being saved. - The latter must include the registers where values are returned - and the register where structure-value addresses are passed. - Aside from that, you can include as many other registers as you like. */ -#define CALL_USED_REGISTERS \ - {1, 1, 0, 0, 0, 0, 0, 0, \ - 1, 1, 0, 0, 0, 0, 0, 1, \ - 1, 1, 0, 0, 0, 0, 0, 0 } - -#else /* SUPPORT_SUN_FPA */ - -/* 1 for registers that have pervasive standard uses - and are not available for the register allocator. - On the 68000, only the stack pointer is such. */ - -/* fpa0 is also reserved so that it can be used to move data back and - forth between high fpa regs and everything else. */ - -#define FIXED_REGISTERS \ - {/* Data registers. */ \ - 0, 0, 0, 0, 0, 0, 0, 0, \ - \ - /* Address registers. */ \ - 0, 0, 0, 0, 0, 0, 0, 1, \ - \ - /* Floating point registers \ - (if available). */ \ - 0, 0, 0, 0, 0, 0, 0, 0, \ - \ - /* Sun3 FPA registers. */ \ - 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 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, 0, 0, 0, 0, 0, 0, \ - 1, 1, 0, 0, 0, 0, 0, 1, \ - 1, 1, 0, 0, 0, 0, 0, 0, \ - /* FPA registers. */ \ - 1, 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 } - -#endif /* defined SUPPORT_SUN_FPA */ - - -/* Make sure everything's fine if we *don't* have a given processor. - This assumes that putting a register in fixed_regs will keep the - compiler's mitts completely off it. We don't bother to zero it out - of register classes. If neither TARGET_FPA or TARGET_68881 is set, - the compiler won't touch since no instructions that use these - registers will be valid. */ - -#ifdef SUPPORT_SUN_FPA - -#define CONDITIONAL_REGISTER_USAGE \ -{ \ - int i; \ - HARD_REG_SET x; \ - if (!TARGET_FPA) \ - { \ - COPY_HARD_REG_SET (x, reg_class_contents[(int)FPA_REGS]); \ - for (i = 0; i < FIRST_PSEUDO_REGISTER; i++ ) \ - if (TEST_HARD_REG_BIT (x, i)) \ - fixed_regs[i] = call_used_regs[i] = 1; \ - } \ - if (TARGET_FPA) \ - { \ - COPY_HARD_REG_SET (x, reg_class_contents[(int)FP_REGS]); \ - for (i = 0; i < FIRST_PSEUDO_REGISTER; i++ ) \ - if (TEST_HARD_REG_BIT (x, i)) \ - fixed_regs[i] = call_used_regs[i] = 1; \ - } \ -} - -#endif /* defined SUPPORT_SUN_FPA */ - -/* Return number of consecutive hard regs needed starting at reg REGNO - to hold something of mode MODE. - This is ordinarily the length in words of a value of mode MODE - but can be less for certain modes in special long registers. - - On the 68000, ordinary registers hold 32 bits worth; - for the 68881 registers, a single register is always enough for - anything that can be stored in them at all. */ -#define HARD_REGNO_NREGS(REGNO, MODE) \ - ((REGNO) >= 16 ? GET_MODE_NUNITS (MODE) \ - : ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)) - -#ifndef SUPPORT_SUN_FPA - -/* Value is 1 if hard register REGNO can hold a value of machine-mode MODE. - On the 68000, the cpu registers can hold any mode but the 68881 registers - can hold only SFmode or DFmode. The 68881 registers can't hold anything - if 68881 use is disabled. */ - -#define HARD_REGNO_MODE_OK(REGNO, MODE) \ - (((REGNO) < 16 \ - && !((REGNO) < 8 && (REGNO) + GET_MODE_SIZE (MODE) / 4 > 8)) \ - || ((REGNO) >= 16 && (REGNO) < 24 \ - && TARGET_68881 \ - && (GET_MODE_CLASS (MODE) == MODE_FLOAT \ - || GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT) \ - && GET_MODE_UNIT_SIZE (MODE) <= 12)) - -#else /* defined SUPPORT_SUN_FPA */ - -/* Value is 1 if hard register REGNO can hold a value of machine-mode MODE. - On the 68000, the cpu registers can hold any mode but the 68881 registers - can hold only SFmode or DFmode. And the 68881 registers can't hold anything - if 68881 use is disabled. However, the Sun FPA register can - (apparently) hold whatever you feel like putting in them. - If using the fpa, don't put a double in d7/a0. */ - -/* ??? This is confused. The check to prohibit d7/a0 overlaps should always - be enabled regardless of whether TARGET_FPA is specified. It isn't clear - what the other d/a register checks are for. Every check using REGNO - actually needs to use a range, e.g. 24>=X<56 not <56. There is probably - no one using this code anymore. */ -#define HARD_REGNO_MODE_OK(REGNO, MODE) \ -(((REGNO) < 16 \ - && !(TARGET_FPA \ - && GET_MODE_CLASS ((MODE)) != MODE_INT \ - && GET_MODE_UNIT_SIZE ((MODE)) > 4 \ - && (REGNO) < 8 && (REGNO) + GET_MODE_SIZE ((MODE)) / 4 > 8 \ - && (REGNO) % (GET_MODE_UNIT_SIZE ((MODE)) / 4) != 0)) \ - || ((REGNO) < 24 \ - ? (TARGET_68881 \ - && (GET_MODE_CLASS (MODE) == MODE_FLOAT \ - || GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT) \ - && GET_MODE_UNIT_SIZE (MODE) <= 12) \ - : ((REGNO) < 56 ? TARGET_FPA && GET_MODE_UNIT_SIZE (MODE) <= 8 : 0))) - -#endif /* defined SUPPORT_SUN_FPA */ - -/* Value is 1 if it is a good idea to tie two pseudo registers - when one has mode MODE1 and one has mode MODE2. - If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2, - for any hard reg, then this must be 0 for correct output. */ -#define MODES_TIEABLE_P(MODE1, MODE2) \ - (! TARGET_68881 \ - || ((GET_MODE_CLASS (MODE1) == MODE_FLOAT \ - || GET_MODE_CLASS (MODE1) == MODE_COMPLEX_FLOAT) \ - == (GET_MODE_CLASS (MODE2) == MODE_FLOAT \ - || GET_MODE_CLASS (MODE2) == MODE_COMPLEX_FLOAT))) - -/* Specify the registers used for certain standard purposes. - The values of these macros are register numbers. */ - -/* m68000 pc isn't overloaded on a register. */ -/* #define PC_REGNUM */ - -/* Register to use for pushing function arguments. */ -#define STACK_POINTER_REGNUM 15 - -/* Base register for access to local variables of the function. */ -#define FRAME_POINTER_REGNUM 14 - -/* Value should be nonzero if functions must have frame pointers. - Zero means the frame pointer need not be set up (and parms - may be accessed via the stack pointer) in functions that seem suitable. - This is computed in `reload', in reload1.c. */ -#define FRAME_POINTER_REQUIRED 0 - -/* Base register for access to arguments of the function. */ -#define ARG_POINTER_REGNUM 14 - -/* Register in which static-chain is passed to a function. */ -#define STATIC_CHAIN_REGNUM 8 - -/* Register in which address to store a structure value - is passed to a function. */ -#define STRUCT_VALUE_REGNUM 9 - -/* Define the classes of registers for register constraints in the - machine description. Also define ranges of constants. - - One of the classes must always be named ALL_REGS and include all hard regs. - If there is more than one class, another class must be named NO_REGS - and contain no registers. - - The name GENERAL_REGS must be the name of a class (or an alias for - another name such as ALL_REGS). This is the class of registers - that is allowed by "g" or "r" in a register constraint. - Also, registers outside this class are allocated only when - instructions express preferences for them. - - The classes must be numbered in nondecreasing order; that is, - a larger-numbered class must never be contained completely - in a smaller-numbered class. - - For any two classes, it is very desirable that there be another - class that represents their union. */ - -/* The 68000 has three kinds of registers, so eight classes would be - a complete set. One of them is not needed. */ - -#ifndef SUPPORT_SUN_FPA - -enum reg_class { - NO_REGS, DATA_REGS, - ADDR_REGS, FP_REGS, - GENERAL_REGS, DATA_OR_FP_REGS, - ADDR_OR_FP_REGS, ALL_REGS, - LIM_REG_CLASSES }; - -#define N_REG_CLASSES (int) LIM_REG_CLASSES - -/* Give names of register classes as strings for dump file. */ - -#define REG_CLASS_NAMES \ - { "NO_REGS", "DATA_REGS", \ - "ADDR_REGS", "FP_REGS", \ - "GENERAL_REGS", "DATA_OR_FP_REGS", \ - "ADDR_OR_FP_REGS", "ALL_REGS" } - -/* Define which registers fit in which classes. - This is an initializer for a vector of HARD_REG_SET - of length N_REG_CLASSES. */ - -#define REG_CLASS_CONTENTS \ -{ \ - {0x00000000}, /* NO_REGS */ \ - {0x000000ff}, /* DATA_REGS */ \ - {0x0000ff00}, /* ADDR_REGS */ \ - {0x00ff0000}, /* FP_REGS */ \ - {0x0000ffff}, /* GENERAL_REGS */ \ - {0x00ff00ff}, /* DATA_OR_FP_REGS */ \ - {0x00ffff00}, /* ADDR_OR_FP_REGS */ \ - {0x00ffffff}, /* ALL_REGS */ \ -} - -/* 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)>>3)+1) - -#else /* defined SUPPORT_SUN_FPA */ - -/* - * Notes on final choices: - * - * 1) Didn't feel any need to union-ize LOW_FPA_REGS with anything - * else. - * 2) Removed all unions that involve address registers with - * floating point registers (left in unions of address and data with - * floating point). - * 3) Defined GENERAL_REGS as ADDR_OR_DATA_REGS. - * 4) Defined ALL_REGS as FPA_OR_FP_OR_GENERAL_REGS. - * 4) Left in everything else. - */ -enum reg_class { NO_REGS, LO_FPA_REGS, FPA_REGS, FP_REGS, - FP_OR_FPA_REGS, DATA_REGS, DATA_OR_FPA_REGS, DATA_OR_FP_REGS, - DATA_OR_FP_OR_FPA_REGS, ADDR_REGS, GENERAL_REGS, - GENERAL_OR_FPA_REGS, GENERAL_OR_FP_REGS, ALL_REGS, - LIM_REG_CLASSES }; - -#define N_REG_CLASSES (int) LIM_REG_CLASSES - -/* Give names of register classes as strings for dump file. */ - -#define REG_CLASS_NAMES \ - { "NO_REGS", "LO_FPA_REGS", "FPA_REGS", "FP_REGS", \ - "FP_OR_FPA_REGS", "DATA_REGS", "DATA_OR_FPA_REGS", "DATA_OR_FP_REGS", \ - "DATA_OR_FP_OR_FPA_REGS", "ADDR_REGS", "GENERAL_REGS", \ - "GENERAL_OR_FPA_REGS", "GENERAL_OR_FP_REGS", "ALL_REGS" } - -/* Define which registers fit in which classes. - This is an initializer for a vector of HARD_REG_SET - of length N_REG_CLASSES. */ - -#define REG_CLASS_CONTENTS \ -{ \ - {0, 0}, /* NO_REGS */ \ - {0xff000000, 0x000000ff}, /* LO_FPA_REGS */ \ - {0xff000000, 0x00ffffff}, /* FPA_REGS */ \ - {0x00ff0000, 0x00000000}, /* FP_REGS */ \ - {0xffff0000, 0x00ffffff}, /* FP_OR_FPA_REGS */ \ - {0x000000ff, 0x00000000}, /* DATA_REGS */ \ - {0xff0000ff, 0x00ffffff}, /* DATA_OR_FPA_REGS */ \ - {0x00ff00ff, 0x00000000}, /* DATA_OR_FP_REGS */ \ - {0xffff00ff, 0x00ffffff}, /* DATA_OR_FP_OR_FPA_REGS */\ - {0x0000ff00, 0x00000000}, /* ADDR_REGS */ \ - {0x0000ffff, 0x00000000}, /* GENERAL_REGS */ \ - {0xff00ffff, 0x00ffffff}, /* GENERAL_OR_FPA_REGS */\ - {0x00ffffff, 0x00000000}, /* GENERAL_OR_FP_REGS */\ - {0xffffffff, 0x00ffffff}, /* ALL_REGS */ \ -} - -/* The same information, inverted: - Return the class number of the smallest class containing - reg number REGNO. This could be a conditional expression - or could index an array. */ - -extern enum reg_class regno_reg_class[]; -#define REGNO_REG_CLASS(REGNO) (regno_reg_class[(REGNO)>>3]) - -#endif /* SUPPORT_SUN_FPA */ - -/* The class value for index registers, and the one for base regs. */ - -#define INDEX_REG_CLASS GENERAL_REGS -#define BASE_REG_CLASS ADDR_REGS - -/* Get reg_class from a letter such as appears in the machine description. - We do a trick here to modify the effective constraints on the - machine description; we zorch the constraint letters that aren't - appropriate for a specific target. This allows us to guarantee - that a specific kind of register will not be used for a given target - without fiddling with the register classes above. */ - -#ifndef SUPPORT_SUN_FPA - -#define REG_CLASS_FROM_LETTER(C) \ - ((C) == 'a' ? ADDR_REGS : \ - ((C) == 'd' ? DATA_REGS : \ - ((C) == 'f' ? (TARGET_68881 ? FP_REGS : \ - NO_REGS) : \ - NO_REGS))) - -#else /* defined SUPPORT_SUN_FPA */ - -#define REG_CLASS_FROM_LETTER(C) \ - ((C) == 'a' ? ADDR_REGS : \ - ((C) == 'd' ? DATA_REGS : \ - ((C) == 'f' ? (TARGET_68881 ? FP_REGS : \ - NO_REGS) : \ - ((C) == 'x' ? (TARGET_FPA ? FPA_REGS : \ - NO_REGS) : \ - ((C) == 'y' ? (TARGET_FPA ? LO_FPA_REGS : \ - NO_REGS) : \ - NO_REGS))))) - -#endif /* defined SUPPORT_SUN_FPA */ - -/* The letters I, J, K, L and M in a register constraint string - can be used to stand for particular ranges of immediate operands. - This macro defines what the ranges are. - C is the letter, and VALUE is a constant value. - Return 1 if VALUE is in the range specified by C. - - For the 68000, `I' is used for the range 1 to 8 - allowed as immediate shift counts and in addq. - `J' is used for the range of signed numbers that fit in 16 bits. - `K' is for numbers that moveq can't handle. - `L' is for range -8 to -1, range of values that can be added with subq. - `M' is for numbers that moveq+notb can't handle. - 'N' is for range 24 to 31, rotatert:SI 8 to 1 expressed as rotate. - 'O' is for 16 (for rotate using swap). - 'P' is for range 8 to 15, rotatert:HI 8 to 1 expressed as rotate. */ - -#define CONST_OK_FOR_LETTER_P(VALUE, C) \ - ((C) == 'I' ? (VALUE) > 0 && (VALUE) <= 8 : \ - (C) == 'J' ? (VALUE) >= -0x8000 && (VALUE) <= 0x7FFF : \ - (C) == 'K' ? (VALUE) < -0x80 || (VALUE) >= 0x80 : \ - (C) == 'L' ? (VALUE) < 0 && (VALUE) >= -8 : \ - (C) == 'M' ? (VALUE) < -0x100 || (VALUE) >= 0x100 : \ - (C) == 'N' ? (VALUE) >= 24 && (VALUE) <= 31 : \ - (C) == 'O' ? (VALUE) == 16 : \ - (C) == 'P' ? (VALUE) >= 8 && (VALUE) <= 15 : 0) - -/* - * A small bit of explanation: - * "G" defines all of the floating constants that are *NOT* 68881 - * constants. this is so 68881 constants get reloaded and the - * fpmovecr is used. "H" defines *only* the class of constants that - * the fpa can use, because these can be gotten at in any fpa - * instruction and there is no need to force reloads. - */ -#ifndef SUPPORT_SUN_FPA -#define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) \ - ((C) == 'G' ? ! (TARGET_68881 && standard_68881_constant_p (VALUE)) : 0 ) -#else /* defined SUPPORT_SUN_FPA */ -#define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) \ - ((C) == 'G' ? ! (TARGET_68881 && standard_68881_constant_p (VALUE)) : \ - (C) == 'H' ? (TARGET_FPA && standard_sun_fpa_constant_p (VALUE)) : 0) -#endif /* defined SUPPORT_SUN_FPA */ - -/* A C expression that defines the optional machine-dependent constraint - letters that can be used to segregate specific types of operands, - usually memory references, for the target machine. It should return 1 if - VALUE corresponds to the operand type represented by the constraint letter - C. If C is not defined as an extra constraint, the value returned should - be 0 regardless of VALUE. */ - -/* For the m68k, `Q' means address register indirect addressing mode. */ - -#define EXTRA_CONSTRAINT(OP, C) \ - ((C) == 'Q' ? (GET_CODE (OP) == MEM && GET_CODE (XEXP (OP, 0)) == REG) : \ - 0 ) - -/* Given an rtx X being reloaded into a reg required to be - in class CLASS, return the class of reg to actually use. - In general this is just CLASS; but on some machines - in some cases it is preferable to use a more restrictive class. - On the 68000 series, use a data reg if possible when the - value is a constant in the range where moveq could be used - and we ensure that QImodes are reloaded into data regs. - Also, if a floating constant needs reloading, put it in memory. - Don't do this for !G constants, since all patterns in the md file - expect them to be loaded into a register via fpmovecr. See above. */ - -#define PREFERRED_RELOAD_CLASS(X,CLASS) \ - ((GET_CODE (X) == CONST_INT \ - && (unsigned) (INTVAL (X) + 0x80) < 0x100 \ - && (CLASS) != ADDR_REGS) \ - ? DATA_REGS \ - : (GET_MODE (X) == QImode && (CLASS) != ADDR_REGS) \ - ? DATA_REGS \ - : (GET_CODE (X) == CONST_DOUBLE \ - && GET_MODE_CLASS (GET_MODE (X)) == MODE_FLOAT) \ - ? (! CONST_DOUBLE_OK_FOR_LETTER_P (X, 'G') \ - && (CLASS == FP_REGS || CLASS == DATA_OR_FP_REGS) \ - ? FP_REGS : NO_REGS) \ - : (CLASS)) - -/* Force QImode output reloads from subregs to be allocated to data regs, - since QImode stores from address regs are not supported. We make the - assumption that if the class is not ADDR_REGS, then it must be a superset - of DATA_REGS. */ - -#define LIMIT_RELOAD_CLASS(MODE, CLASS) \ - (((MODE) == QImode && (CLASS) != ADDR_REGS) \ - ? DATA_REGS \ - : (CLASS)) - -/* Return the maximum number of consecutive registers - needed to represent mode MODE in a register of class CLASS. */ -/* On the 68000, this is the size of MODE in words, - except in the FP regs, where a single reg is always enough. */ -#ifndef SUPPORT_SUN_FPA - -#define CLASS_MAX_NREGS(CLASS, MODE) \ - ((CLASS) == FP_REGS ? 1 \ - : ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)) - -/* Moves between fp regs and other regs are two insns. */ -#define REGISTER_MOVE_COST(CLASS1, CLASS2) \ - (((CLASS1) == FP_REGS && (CLASS2) != FP_REGS) \ - || ((CLASS2) == FP_REGS && (CLASS1) != FP_REGS) \ - ? 4 : 2) - -#else /* defined SUPPORT_SUN_FPA */ - -#define CLASS_MAX_NREGS(CLASS, MODE) \ - ((CLASS) == FP_REGS || (CLASS) == FPA_REGS || (CLASS) == LO_FPA_REGS ? 1 \ - : ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)) - -/* Moves between fp regs and other regs are two insns. */ -/* Likewise for high fpa regs and other regs. */ -#define REGISTER_MOVE_COST(CLASS1, CLASS2) \ - ((((CLASS1) == FP_REGS && (CLASS2) != FP_REGS) \ - || ((CLASS2) == FP_REGS && (CLASS1) != FP_REGS) \ - || ((CLASS1) == FPA_REGS && (CLASS2) != FPA_REGS) \ - || ((CLASS2) == FPA_REGS && (CLASS1) != FPA_REGS)) \ - ? 4 : 2) - -#endif /* define SUPPORT_SUN_FPA */ - -/* 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 - -/* Nonzero if we need to generate stack-probe insns. - On most systems they are not needed. - When they are needed, define this as the stack offset to probe at. */ -#define NEED_PROBE 0 - -/* Define this if the nominal address of the stack frame - is at the high-address end of the local variables; - that is, each additional local variable allocated - goes at a more negative offset in the frame. */ -#define FRAME_GROWS_DOWNWARD - -/* Offset within stack frame to start allocating local variables at. - If FRAME_GROWS_DOWNWARD, this is the offset to the END of the - first local allocated. Otherwise, it is the offset to the BEGINNING - of the first local allocated. */ -#define STARTING_FRAME_OFFSET 0 - -/* If we generate an insn to push BYTES bytes, - this says how many the stack pointer really advances by. - On the 68000, sp@- in a byte insn really pushes a word. - On the 5200 (coldfire), sp@- in a byte insn pushes just a byte. */ -#define PUSH_ROUNDING(BYTES) (TARGET_5200 ? BYTES : ((BYTES) + 1) & ~1) - -/* Offset of first parameter from the argument pointer register value. */ -#define FIRST_PARM_OFFSET(FNDECL) 8 - -/* Offset of the CFA from the argument pointer register value. */ -#define ARG_POINTER_CFA_OFFSET 8 - -/* Value is the number of byte 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. - - On the 68000, the RTS insn cannot pop anything. - On the 68010, the RTD insn may be used to pop them if the number - of args is fixed, but if the number is variable then the caller - must pop them all. RTD can't be used for library calls now - because the library is compiled with the Unix compiler. - Use of RTD is a selectable option, since it is incompatible with - standard Unix calling sequences. If the option is not selected, - the caller must always pop the args. */ - -#define RETURN_POPS_ARGS(FUNDECL,FUNTYPE,SIZE) \ - ((TARGET_RTD && (!(FUNDECL) || TREE_CODE (FUNDECL) != IDENTIFIER_NODE) \ - && (TYPE_ARG_TYPES (FUNTYPE) == 0 \ - || (TREE_VALUE (tree_last (TYPE_ARG_TYPES (FUNTYPE))) \ - == void_type_node))) \ - ? (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 the 68000 the return value is in D0 regardless. */ - -#define FUNCTION_VALUE(VALTYPE, FUNC) \ - gen_rtx_REG (TYPE_MODE (VALTYPE), 0) - -/* Define how to find the value returned by a library function - assuming the value has mode MODE. */ - -/* On the 68000 the return value is in D0 regardless. */ - -#define LIBCALL_VALUE(MODE) gen_rtx_REG (MODE, 0) - -/* 1 if N is a possible register number for a function value. - On the 68000, d0 is the only register thus used. */ - -#define FUNCTION_VALUE_REGNO_P(N) ((N) == 0) - -/* Define this to be true when FUNCTION_VALUE_REGNO_P is true for - more than one register. */ - -#define NEEDS_UNTYPED_CALL 0 - -/* Define this if PCC uses the nonreentrant convention for returning - structure and union values. */ - -#define PCC_STATIC_STRUCT_RETURN - -/* 1 if N is a possible register number for function argument passing. - On the 68000, no registers are used in this way. */ - -#define FUNCTION_ARG_REGNO_P(N) 0 - -/* Define a data type for recording info about an argument list - during the scan of that argument list. This data type should - hold all necessary information about the function itself - and about the args processed so far, enough to enable macros - such as FUNCTION_ARG to determine where the next arg should go. - - On the m68k, this is a single integer, which is a number of bytes - of arguments scanned so far. */ - -#define CUMULATIVE_ARGS int - -/* Initialize a variable CUM of type CUMULATIVE_ARGS - for a call to a function whose data type is FNTYPE. - For a library call, FNTYPE is 0. - - On the m68k, the offset starts at 0. */ - -#define INIT_CUMULATIVE_ARGS(CUM,FNTYPE,LIBNAME,INDIRECT) \ - ((CUM) = 0) - -/* Update the data in CUM to advance over an argument - of mode MODE and data type TYPE. - (TYPE is null for libcalls where that information may not be available.) */ - -#define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \ - ((CUM) += ((MODE) != BLKmode \ - ? (GET_MODE_SIZE (MODE) + 3) & ~3 \ - : (int_size_in_bytes (TYPE) + 3) & ~3)) - -/* Define where to put the arguments to a function. - Value is zero to push the argument on the stack, - or a hard register in which to store the argument. - - MODE is the argument's machine mode. - TYPE is the data type of the argument (as a tree). - This is null for libcalls where that information may - not be available. - CUM is a variable of type CUMULATIVE_ARGS which gives info about - the preceding args and about the function being called. - NAMED is nonzero if this argument is a named parameter - (otherwise it is an extra parameter matching an ellipsis). */ - -/* On the 68000 all args are pushed, except if -mregparm is specified - then the first two words of arguments are passed in d0, d1. - *NOTE* -mregparm does not work. - It exists only to test register calling conventions. */ - -#define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \ -((TARGET_REGPARM && (CUM) < 8) ? gen_rtx_REG ((MODE), (CUM) / 4) : 0) - -/* For an arg passed partly in registers and partly in memory, - this is the number of registers used. - For args passed entirely in registers or entirely in memory, zero. */ - -#define FUNCTION_ARG_PARTIAL_NREGS(CUM, MODE, TYPE, NAMED) \ -((TARGET_REGPARM && (CUM) < 8 \ - && 8 < ((CUM) + ((MODE) == BLKmode \ - ? int_size_in_bytes (TYPE) \ - : GET_MODE_SIZE (MODE)))) \ - ? 2 - (CUM) / 4 : 0) - -/* Generate the assembly code for function entry. */ -#define FUNCTION_PROLOGUE(FILE, SIZE) output_function_prologue(FILE, SIZE) - -/* Output assembler code to FILE to increment profiler label # LABELNO - for profiling a function entry. */ - -#define FUNCTION_PROFILER(FILE, LABELNO) \ - asm_fprintf (FILE, "\tlea %LLP%d,%Ra0\n\tjsr mcount\n", (LABELNO)) - -/* Output assembler code to FILE to initialize this source file's - basic block profiling info, if that has not already been done. */ - -#define FUNCTION_BLOCK_PROFILER(FILE, BLOCK_OR_LABEL) \ -do \ - { \ - switch (profile_block_flag) \ - { \ - case 2: \ - asm_fprintf (FILE, "\tpea %d\n\tpea %LLPBX0\n\tjsr %U__bb_init_trace_func\n\taddql %I8,%Rsp\n", \ - (BLOCK_OR_LABEL)); \ - break; \ - \ - default: \ - asm_fprintf (FILE, "\ttstl %LLPBX0\n\tbne %LLPI%d\n\tpea %LLPBX0\n\tjsr %U__bb_init_func\n\taddql %I4,%Rsp\n%LLPI%d:\n", \ - (BLOCK_OR_LABEL), (BLOCK_OR_LABEL)); \ - break; \ - } \ - } \ -while(0) - -/* Output assembler code to FILE to increment the counter for - the BLOCKNO'th basic block in this source file. */ - -#define BLOCK_PROFILER(FILE, BLOCKNO) \ -do \ - { \ - switch (profile_block_flag) \ - { \ - case 2: \ - asm_fprintf (FILE, "\tmovel %Ra1,%Rsp@-\n\tlea ___bb,%Ra1\n\tmovel %I%d,%Ra1@(0)\n\tmovel %I%LLPBX0,%Ra1@(4)\n\tmovel %Rsp@+,%Ra1\n\tjsr %U__bb_trace_func\n", \ - BLOCKNO); \ - break; \ - \ - default: \ - asm_fprintf (FILE, "\taddql %I1,%LLPBX2+%d\n", 4 * BLOCKNO); \ - break; \ - } \ - } \ -while(0) - -/* Output assembler code to FILE to indicate return from - a function during basic block profiling. */ - -#define FUNCTION_BLOCK_PROFILER_EXIT(FILE) \ - asm_fprintf (FILE, "\tjsr %U__bb_trace_ret\n"); - -/* Save all registers which may be clobbered by a function call. - MACHINE_STATE_SAVE and MACHINE_STATE_RESTORE are target-code macros, - used in libgcc2.c. They may not refer to TARGET_* macros !!! */ -#if defined (__mc68010__) || defined(mc68010) \ - || defined(__mc68020__) || defined(mc68020) \ - || defined(__mc68030__) || defined(mc68030) \ - || defined(__mc68040__) || defined(mc68040) \ - || defined(__mcpu32__) || defined(mcpu32) -#define MACHINE_STATE_m68010_up -#endif - -#ifdef MOTOROLA -#if defined(__mcf5200__) -#define MACHINE_STATE_SAVE(id) \ - { \ - asm ("sub.l 20,%sp"); \ - asm ("movm.l &0x0303,4(%sp)"); \ - asm ("move.w %ccr,%d0"); \ - asm ("movm.l &0x0001,(%sp)"); \ - } -#else /* !__mcf5200__ */ -#if defined(MACHINE_STATE_m68010_up) -#ifdef __HPUX_ASM__ -/* HPUX assembler does not accept %ccr. */ -#define MACHINE_STATE_SAVE(id) \ - { \ - asm ("move.w %cc,-(%sp)"); \ - asm ("movm.l &0xc0c0,-(%sp)"); \ - } -#else /* ! __HPUX_ASM__ */ -#define MACHINE_STATE_SAVE(id) \ - { \ - asm ("move.w %ccr,-(%sp)"); \ - asm ("movm.l &0xc0c0,-(%sp)"); \ - } -#endif /* __HPUX_ASM__ */ -#else /* !MACHINE_STATE_m68010_up */ -#define MACHINE_STATE_SAVE(id) \ - { \ - asm ("move.w %sr,-(%sp)"); \ - asm ("movm.l &0xc0c0,-(%sp)"); \ - } -#endif /* MACHINE_STATE_m68010_up */ -#endif /* __mcf5200__ */ -#else /* !MOTOROLA */ -#if defined(__mcf5200__) -#define MACHINE_STATE_SAVE(id) \ - { \ - asm ("subl %#20,%/sp" : ); \ - asm ("movml %/d0/%/d1/%/a0/%/a1,%/sp@(4)" : ); \ - asm ("movew %/cc,%/d0" : ); \ - asm ("movml %/d0,%/sp@" : ); \ - } -#else /* !__mcf5200__ */ -#if defined(MACHINE_STATE_m68010_up) -#define MACHINE_STATE_SAVE(id) \ - { \ - asm ("movew %/cc,%/sp@-" : ); \ - asm ("moveml %/d0/%/d1/%/a0/%/a1,%/sp@-" : ); \ - } -#else /* !MACHINE_STATE_m68010_up */ -#define MACHINE_STATE_SAVE(id) \ - { \ - asm ("movew %/sr,%/sp@-" : ); \ - asm ("moveml %/d0/%/d1/%/a0/%/a1,%/sp@-" : ); \ - } -#endif /* MACHINE_STATE_m68010_up */ -#endif /* __mcf5200__ */ -#endif /* MOTOROLA */ - -/* Restore all registers saved by MACHINE_STATE_SAVE. */ - -#ifdef MOTOROLA -#if defined(__mcf5200__) -#define MACHINE_STATE_RESTORE(id) \ - { \ - asm ("movm.l (%sp),&0x0001"); \ - asm ("move.w %d0,%ccr"); \ - asm ("movm.l 4(%sp),&0x0303"); \ - asm ("add.l 20,%sp"); \ - } -#else /* !__mcf5200__ */ -#ifdef __HPUX_ASM__ -/* HPUX assembler does not accept %ccr. */ -#define MACHINE_STATE_RESTORE(id) \ - { \ - asm ("movm.l (%sp)+,&0x0303"); \ - asm ("move.w (%sp)+,%cc"); \ - } -#else /* ! __HPUX_ASM__ */ -#define MACHINE_STATE_RESTORE(id) \ - { \ - asm ("movm.l (%sp)+,&0x0303"); \ - asm ("move.w (%sp)+,%ccr"); \ - } -#endif /* __HPUX_ASM__ */ -#endif /* __mcf5200__ */ -#else /* !MOTOROLA */ -#if defined(__mcf5200__) -#define MACHINE_STATE_RESTORE(id) \ - { \ - asm ("movml %/sp@,%/d0" : ); \ - asm ("movew %/d0,%/cc" : ); \ - asm ("movml %/sp@(4),%/d0/%/d1/%/a0/%/a1" : ); \ - asm ("addl %#20,%/sp" : ); \ - } -#else /* !__mcf5200__ */ -#define MACHINE_STATE_RESTORE(id) \ - { \ - asm ("moveml %/sp@+,%/d0/%/d1/%/a0/%/a1" : ); \ - asm ("movew %/sp@+,%/cc" : ); \ - } -#endif /* __mcf5200__ */ -#endif /* MOTOROLA */ - -/* 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 - -/* Generate the assembly code for function exit. */ -#define FUNCTION_EPILOGUE(FILE, SIZE) output_function_epilogue (FILE, SIZE) - -/* This is a hook for other tm files to change. */ -/* #define FUNCTION_EXTRA_EPILOGUE(FILE, SIZE) */ - -/* Determine if the epilogue should be output as RTL. - You should override this if you define FUNCTION_EXTRA_EPILOGUE. */ -#define USE_RETURN_INSN use_return_insn () - -/* Store in the variable DEPTH the initial difference between the - frame pointer reg contents and the stack pointer reg contents, - as of the start of the function body. This depends on the layout - of the fixed parts of the stack frame and on how registers are saved. - - On the 68k, if we have a frame, we must add one word to its length - to allow for the place that a6 is stored when we do have a frame pointer. - Otherwise, we would need to compute the offset from the frame pointer - of a local variable as a function of frame_pointer_needed, which - is hard. */ - -#define INITIAL_FRAME_POINTER_OFFSET(DEPTH) \ -{ int regno; \ - int offset = -4; \ - for (regno = 16; regno < FIRST_PSEUDO_REGISTER; regno++) \ - if (regs_ever_live[regno] && ! call_used_regs[regno]) \ - offset += 12; \ - for (regno = 0; regno < 16; regno++) \ - if (regs_ever_live[regno] && ! call_used_regs[regno]) \ - offset += 4; \ - (DEPTH) = (offset + ((get_frame_size () + 3) & -4) \ - + (get_frame_size () == 0 ? 0 : 4)); \ -} - -/* Output assembler code for a block containing the constant parts - of a trampoline, leaving space for the variable parts. */ - -/* On the 68k, the trampoline looks like this: - movl #STATIC,a0 - jmp FUNCTION - - WARNING: Targets that may run on 68040+ cpus must arrange for - the instruction cache to be flushed. Previous incarnations of - the m68k trampoline code attempted to get around this by either - using an out-of-line transfer function or pc-relative data, but - the fact remains that the code to jump to the transfer function - or the code to load the pc-relative data needs to be flushed - just as much as the "variable" portion of the trampoline. - Recognizing that a cache flush is going to be required anyway, - dispense with such notions and build a smaller trampoline. */ - -/* Since more instructions are required to move a template into - place than to create it on the spot, don't use a template. */ - -/* Length in units of the trampoline for entering a nested function. */ - -#define TRAMPOLINE_SIZE 12 - -/* Alignment required for a trampoline in bits. */ - -#define TRAMPOLINE_ALIGNMENT 16 - -/* Targets redefine this to invoke code to either flush the cache, - or enable stack execution (or both). */ - -#ifndef FINALIZE_TRAMPOLINE -#define FINALIZE_TRAMPOLINE(TRAMP) -#endif - -/* 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. - - We generate a two-instructions program at address TRAMP : - movea.l &CXT,%a0 - jmp FNADDR */ - -#define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT) \ -{ \ - emit_move_insn (gen_rtx_MEM (HImode, TRAMP), GEN_INT(0x207C)); \ - emit_move_insn (gen_rtx_MEM (SImode, plus_constant (TRAMP, 2)), CXT); \ - emit_move_insn (gen_rtx_MEM (HImode, plus_constant (TRAMP, 6)), \ - GEN_INT(0x4EF9)); \ - emit_move_insn (gen_rtx_MEM (SImode, plus_constant (TRAMP, 8)), FNADDR); \ - FINALIZE_TRAMPOLINE(TRAMP); \ -} - -/* This is the library routine that is used - to transfer control from the trampoline - to the actual nested function. - It is defined for backward compatibility, - for linking with object code that used the old - trampoline definition. */ - -/* A colon is used with no explicit operands - to cause the template string to be scanned for %-constructs. */ -/* The function name __transfer_from_trampoline is not actually used. - The function definition just permits use of "asm with operands" - (though the operand list is empty). */ -#define TRANSFER_FROM_TRAMPOLINE \ -void \ -__transfer_from_trampoline () \ -{ \ - register char *a0 asm ("%a0"); \ - asm (GLOBAL_ASM_OP " ___trampoline"); \ - asm ("___trampoline:"); \ - asm volatile ("move%.l %0,%@" : : "m" (a0[22])); \ - asm volatile ("move%.l %1,%0" : "=a" (a0) : "m" (a0[18])); \ - asm ("rts":); \ -} - -/* Addressing modes, and classification of registers for them. */ - -#define HAVE_POST_INCREMENT 1 -/* #define HAVE_POST_DECREMENT 0 */ - -#define HAVE_PRE_DECREMENT 1 -/* #define HAVE_PRE_INCREMENT 0 */ - -/* Macros to check register numbers against specific register classes. */ - -/* These assume that REGNO is a hard or pseudo reg number. - They give nonzero only if REGNO is a hard reg of the suitable class - or a pseudo reg currently allocated to a suitable hard reg. - Since they use reg_renumber, they are safe only once reg_renumber - has been allocated, which happens in local-alloc.c. */ - -#define REGNO_OK_FOR_INDEX_P(REGNO) \ -((REGNO) < 16 || (unsigned) reg_renumber[REGNO] < 16) -#define REGNO_OK_FOR_BASE_P(REGNO) \ -(((REGNO) ^ 010) < 8 || (unsigned) (reg_renumber[REGNO] ^ 010) < 8) -#define REGNO_OK_FOR_DATA_P(REGNO) \ -((REGNO) < 8 || (unsigned) reg_renumber[REGNO] < 8) -#define REGNO_OK_FOR_FP_P(REGNO) \ -(((REGNO) ^ 020) < 8 || (unsigned) (reg_renumber[REGNO] ^ 020) < 8) -#ifdef SUPPORT_SUN_FPA -#define REGNO_OK_FOR_FPA_P(REGNO) \ -(((REGNO) >= 24 && (REGNO) < 56) || (reg_renumber[REGNO] >= 24 && reg_renumber[REGNO] < 56)) -#endif - -/* Now macros that check whether X is a register and also, - strictly, whether it is in a specified class. - - These macros are specific to the 68000, and may be used only - in code for printing assembler insns and in conditions for - define_optimization. */ - -/* 1 if X is a data register. */ - -#define DATA_REG_P(X) (REG_P (X) && REGNO_OK_FOR_DATA_P (REGNO (X))) - -/* 1 if X is an fp register. */ - -#define FP_REG_P(X) (REG_P (X) && REGNO_OK_FOR_FP_P (REGNO (X))) - -/* 1 if X is an address register */ - -#define ADDRESS_REG_P(X) (REG_P (X) && REGNO_OK_FOR_BASE_P (REGNO (X))) - -#ifdef SUPPORT_SUN_FPA -/* 1 if X is a register in the Sun FPA. */ -#define FPA_REG_P(X) (REG_P (X) && REGNO_OK_FOR_FPA_P (REGNO (X))) -#else -/* Answer must be no if we don't have an FPA. */ -#define FPA_REG_P(X) 0 -#endif - -/* Maximum number of registers that can appear in a valid memory address. */ - -#define MAX_REGS_PER_ADDRESS 2 - -/* Recognize any constant value that is a valid address. */ - -#define CONSTANT_ADDRESS_P(X) \ - (GET_CODE (X) == LABEL_REF || GET_CODE (X) == SYMBOL_REF \ - || GET_CODE (X) == CONST_INT || GET_CODE (X) == CONST \ - || GET_CODE (X) == HIGH) - -/* Nonzero if the constant value X is a legitimate general operand. - It is given that X satisfies CONSTANT_P or is a CONST_DOUBLE. */ - -#define LEGITIMATE_CONSTANT_P(X) 1 - -/* Nonzero if the constant value X is a legitimate general operand - when generating PIC code. It is given that flag_pic is on and - that X satisfies CONSTANT_P or is a CONST_DOUBLE. */ - -#define LEGITIMATE_PIC_OPERAND_P(X) \ - ((! symbolic_operand (X, VOIDmode) \ - && ! (GET_CODE (X) == CONST_DOUBLE && CONST_DOUBLE_MEM (X) \ - && GET_CODE (CONST_DOUBLE_MEM (X)) == MEM \ - && symbolic_operand (XEXP (CONST_DOUBLE_MEM (X), 0), \ - VOIDmode))) \ - || (GET_CODE (X) == SYMBOL_REF && SYMBOL_REF_FLAG (X))) - -/* The macros REG_OK_FOR..._P assume that the arg is a REG rtx - and check its validity for a certain class. - We have two alternate definitions for each of them. - The usual definition accepts all pseudo regs; the other rejects - them unless they have been allocated suitable hard regs. - The symbol REG_OK_STRICT causes the latter definition to be used. - - Most source files want to accept pseudo regs in the hope that - they will get allocated to the class that the insn wants them to be in. - Source files for reload pass need to be strict. - After reload, it makes no difference, since pseudo regs have - been eliminated by then. */ - -#ifndef REG_OK_STRICT - -/* Nonzero if X is a hard reg that can be used as an index - or if it is a pseudo reg. */ -#define REG_OK_FOR_INDEX_P(X) ((REGNO (X) ^ 020) >= 8) -/* Nonzero if X is a hard reg that can be used as a base reg - or if it is a pseudo reg. */ -#define REG_OK_FOR_BASE_P(X) ((REGNO (X) & ~027) != 0) - -#else - -/* Nonzero if X is a hard reg that can be used as an index. */ -#define REG_OK_FOR_INDEX_P(X) REGNO_OK_FOR_INDEX_P (REGNO (X)) -/* Nonzero if X is a hard reg that can be used as a base reg. */ -#define REG_OK_FOR_BASE_P(X) REGNO_OK_FOR_BASE_P (REGNO (X)) - -#endif - -/* GO_IF_LEGITIMATE_ADDRESS recognizes an RTL expression - that is a valid memory address for an instruction. - The MODE argument is the machine mode for the MEM expression - that wants to use this address. - - When generating PIC, an address involving a SYMBOL_REF is legitimate - if and only if it is the sum of pic_offset_table_rtx and the SYMBOL_REF. - We use LEGITIMATE_PIC_OPERAND_P to throw out the illegitimate addresses, - and we explicitly check for the sum of pic_offset_table_rtx and a SYMBOL_REF. - - Likewise for a LABEL_REF when generating PIC. - - The other macros defined here are used only in GO_IF_LEGITIMATE_ADDRESS. */ - -/* Allow SUBREG everywhere we allow REG. This results in better code. It - also makes function inlining work when inline functions are called with - arguments that are SUBREGs. */ - -#define LEGITIMATE_BASE_REG_P(X) \ - ((GET_CODE (X) == REG && REG_OK_FOR_BASE_P (X)) \ - || (GET_CODE (X) == SUBREG \ - && GET_CODE (SUBREG_REG (X)) == REG \ - && REG_OK_FOR_BASE_P (SUBREG_REG (X)))) - -#define INDIRECTABLE_1_ADDRESS_P(X) \ - ((CONSTANT_ADDRESS_P (X) && (!flag_pic || LEGITIMATE_PIC_OPERAND_P (X))) \ - || LEGITIMATE_BASE_REG_P (X) \ - || ((GET_CODE (X) == PRE_DEC || GET_CODE (X) == POST_INC) \ - && LEGITIMATE_BASE_REG_P (XEXP (X, 0))) \ - || (GET_CODE (X) == PLUS \ - && LEGITIMATE_BASE_REG_P (XEXP (X, 0)) \ - && GET_CODE (XEXP (X, 1)) == CONST_INT \ - && (TARGET_68020 \ - || ((unsigned) INTVAL (XEXP (X, 1)) + 0x8000) < 0x10000)) \ - || (GET_CODE (X) == PLUS && XEXP (X, 0) == pic_offset_table_rtx \ - && flag_pic && GET_CODE (XEXP (X, 1)) == SYMBOL_REF) \ - || (GET_CODE (X) == PLUS && XEXP (X, 0) == pic_offset_table_rtx \ - && flag_pic && GET_CODE (XEXP (X, 1)) == LABEL_REF)) \ - -#define GO_IF_NONINDEXED_ADDRESS(X, ADDR) \ -{ if (INDIRECTABLE_1_ADDRESS_P (X)) goto ADDR; } - -/* Only labels on dispatch tables are valid for indexing from. */ -#define GO_IF_INDEXABLE_BASE(X, ADDR) \ -{ rtx temp; \ - if (GET_CODE (X) == LABEL_REF \ - && (temp = next_nonnote_insn (XEXP (X, 0))) != 0 \ - && GET_CODE (temp) == JUMP_INSN \ - && (GET_CODE (PATTERN (temp)) == ADDR_VEC \ - || GET_CODE (PATTERN (temp)) == ADDR_DIFF_VEC)) \ - goto ADDR; \ - if (LEGITIMATE_BASE_REG_P (X)) goto ADDR; } - -#define GO_IF_INDEXING(X, ADDR) \ -{ if (GET_CODE (X) == PLUS && LEGITIMATE_INDEX_P (XEXP (X, 0))) \ - { GO_IF_INDEXABLE_BASE (XEXP (X, 1), ADDR); } \ - if (GET_CODE (X) == PLUS && LEGITIMATE_INDEX_P (XEXP (X, 1))) \ - { GO_IF_INDEXABLE_BASE (XEXP (X, 0), ADDR); } } - -#define GO_IF_INDEXED_ADDRESS(X, ADDR) \ -{ GO_IF_INDEXING (X, ADDR); \ - if (GET_CODE (X) == PLUS) \ - { if (GET_CODE (XEXP (X, 1)) == CONST_INT \ - && (TARGET_68020 || (unsigned) INTVAL (XEXP (X, 1)) + 0x80 < 0x100)) \ - { rtx go_temp = XEXP (X, 0); GO_IF_INDEXING (go_temp, ADDR); } \ - if (GET_CODE (XEXP (X, 0)) == CONST_INT \ - && (TARGET_68020 || (unsigned) INTVAL (XEXP (X, 0)) + 0x80 < 0x100)) \ - { rtx go_temp = XEXP (X, 1); GO_IF_INDEXING (go_temp, ADDR); } } } - -/* coldfire/5200 does not allow HImode index registers. */ -#define LEGITIMATE_INDEX_REG_P(X) \ - ((GET_CODE (X) == REG && REG_OK_FOR_INDEX_P (X)) \ - || (! TARGET_5200 \ - && GET_CODE (X) == SIGN_EXTEND \ - && GET_CODE (XEXP (X, 0)) == REG \ - && GET_MODE (XEXP (X, 0)) == HImode \ - && REG_OK_FOR_INDEX_P (XEXP (X, 0))) \ - || (GET_CODE (X) == SUBREG \ - && GET_CODE (SUBREG_REG (X)) == REG \ - && REG_OK_FOR_INDEX_P (SUBREG_REG (X)))) - -#define LEGITIMATE_INDEX_P(X) \ - (LEGITIMATE_INDEX_REG_P (X) \ - || ((TARGET_68020 || TARGET_5200) && GET_CODE (X) == MULT \ - && LEGITIMATE_INDEX_REG_P (XEXP (X, 0)) \ - && GET_CODE (XEXP (X, 1)) == CONST_INT \ - && (INTVAL (XEXP (X, 1)) == 2 \ - || INTVAL (XEXP (X, 1)) == 4 \ - || (INTVAL (XEXP (X, 1)) == 8 && !TARGET_5200)))) - -/* If pic, we accept INDEX+LABEL, which is what do_tablejump makes. */ -#define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR) \ -{ GO_IF_NONINDEXED_ADDRESS (X, ADDR); \ - GO_IF_INDEXED_ADDRESS (X, ADDR); \ - if (flag_pic && MODE == CASE_VECTOR_MODE && GET_CODE (X) == PLUS \ - && LEGITIMATE_INDEX_P (XEXP (X, 0)) \ - && GET_CODE (XEXP (X, 1)) == LABEL_REF) \ - goto ADDR; } - -/* Don't call memory_address_noforce for the address to fetch - the switch offset. This address is ok as it stands (see above), - but memory_address_noforce would alter it. */ -#define PIC_CASE_VECTOR_ADDRESS(index) index - -/* Try machine-dependent ways of modifying an illegitimate address - to be legitimate. If we find one, return the new, valid address. - This macro is used in only one place: `memory_address' in explow.c. - - OLDX is the address as it was before break_out_memory_refs was called. - In some cases it is useful to look at this to decide what needs to be done. - - MODE and WIN are passed so that this macro can use - GO_IF_LEGITIMATE_ADDRESS. - - It is always safe for this macro to do nothing. It exists to recognize - opportunities to optimize the output. - - For the 68000, we handle X+REG by loading X into a register R and - using R+REG. R will go in an address reg and indexing will be used. - However, if REG is a broken-out memory address or multiplication, - nothing needs to be done because REG can certainly go in an address reg. */ - -#define COPY_ONCE(Y) if (!copied) { Y = copy_rtx (Y); copied = ch = 1; } -#define LEGITIMIZE_ADDRESS(X,OLDX,MODE,WIN) \ -{ register int ch = (X) != (OLDX); \ - if (GET_CODE (X) == PLUS) \ - { int copied = 0; \ - if (GET_CODE (XEXP (X, 0)) == MULT) \ - { COPY_ONCE (X); XEXP (X, 0) = force_operand (XEXP (X, 0), 0);} \ - if (GET_CODE (XEXP (X, 1)) == MULT) \ - { COPY_ONCE (X); XEXP (X, 1) = force_operand (XEXP (X, 1), 0);} \ - if (ch && GET_CODE (XEXP (X, 1)) == REG \ - && GET_CODE (XEXP (X, 0)) == REG) \ - goto WIN; \ - if (ch) { GO_IF_LEGITIMATE_ADDRESS (MODE, X, WIN); } \ - if (GET_CODE (XEXP (X, 0)) == REG \ - || (GET_CODE (XEXP (X, 0)) == SIGN_EXTEND \ - && GET_CODE (XEXP (XEXP (X, 0), 0)) == REG \ - && GET_MODE (XEXP (XEXP (X, 0), 0)) == HImode)) \ - { register rtx temp = gen_reg_rtx (Pmode); \ - register rtx val = force_operand (XEXP (X, 1), 0); \ - emit_move_insn (temp, val); \ - COPY_ONCE (X); \ - XEXP (X, 1) = temp; \ - goto WIN; } \ - else if (GET_CODE (XEXP (X, 1)) == REG \ - || (GET_CODE (XEXP (X, 1)) == SIGN_EXTEND \ - && GET_CODE (XEXP (XEXP (X, 1), 0)) == REG \ - && GET_MODE (XEXP (XEXP (X, 1), 0)) == HImode)) \ - { register rtx temp = gen_reg_rtx (Pmode); \ - register rtx val = force_operand (XEXP (X, 0), 0); \ - emit_move_insn (temp, val); \ - COPY_ONCE (X); \ - XEXP (X, 0) = temp; \ - goto WIN; }}} - -/* Go to LABEL if ADDR (a legitimate address expression) - has an effect that depends on the machine mode it is used for. - On the 68000, only predecrement and postincrement address depend thus - (the amount of decrement or increment being the length of the operand). */ - -#define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL) \ - if (GET_CODE (ADDR) == POST_INC || GET_CODE (ADDR) == PRE_DEC) goto LABEL - -/* Specify the machine mode that this machine uses - for the index in the tablejump instruction. */ -#define CASE_VECTOR_MODE HImode - -/* Define as C expression which evaluates to nonzero if the tablejump - instruction expects the table to contain offsets from the address of the - table. - Do not define this if the table should contain absolute addresses. */ -#define CASE_VECTOR_PC_RELATIVE 1 - -/* Specify the tree operation to be used to convert reals to integers. */ -#define IMPLICIT_FIX_EXPR FIX_ROUND_EXPR - -/* This is the kind of divide that is easiest to do in the general case. */ -#define EASY_DIV_EXPR TRUNC_DIV_EXPR - -/* Define this as 1 if `char' should by default be signed; else as 0. */ -#define DEFAULT_SIGNED_CHAR 1 - -/* Don't cse the address of the function being compiled. */ -#define NO_RECURSIVE_FUNCTION_CSE - -/* Max number of bytes we can move from memory to memory - in one reasonably fast instruction. */ -#define MOVE_MAX 4 - -/* Define this if zero-extension is slow (more than one real instruction). */ -#define SLOW_ZERO_EXTEND - -/* Nonzero if access to memory by bytes is slow and undesirable. */ -#define SLOW_BYTE_ACCESS 0 - -/* Value is 1 if truncating an integer of INPREC bits to OUTPREC bits - is done just by pretending it is already truncated. */ -#define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1 - -/* We assume that the store-condition-codes instructions store 0 for false - and some other value for true. This is the value stored for true. */ - -#define STORE_FLAG_VALUE -1 - -/* When a prototype says `char' or `short', really pass an `int'. */ -#define PROMOTE_PROTOTYPES - -/* Specify the machine mode that pointers have. - After generation of rtl, the compiler makes no further distinction - between pointers and any other objects of this machine mode. */ -#define Pmode SImode - -/* A function address in a call instruction - is a byte address (for indexing purposes) - so give the MEM rtx a byte's mode. */ -#define FUNCTION_MODE QImode - -/* Compute the cost of computing a constant rtl expression RTX - whose rtx-code is CODE. The body of this macro is a portion - of a switch statement. If the code is computed here, - return it with a return statement. Otherwise, break from the switch. */ - -#define CONST_COSTS(RTX,CODE,OUTER_CODE) \ - case CONST_INT: \ - /* Constant zero is super cheap due to clr instruction. */ \ - if (RTX == const0_rtx) return 0; \ - /* if ((OUTER_CODE) == SET) */ \ - return const_int_cost(RTX); \ - case CONST: \ - case LABEL_REF: \ - case SYMBOL_REF: \ - return 3; \ - case CONST_DOUBLE: \ - return 5; - -/* Compute the cost of various arithmetic operations. - These are vaguely right for a 68020. */ -/* The costs for long multiply have been adjusted to - work properly in synth_mult on the 68020, - relative to an average of the time for add and the time for shift, - taking away a little more because sometimes move insns are needed. */ -/* div?.w is relatively cheaper on 68000 counted in COSTS_N_INSNS terms. */ -#define MULL_COST (TARGET_68060 ? 2 : TARGET_68040 ? 5 : 13) -#define MULW_COST (TARGET_68060 ? 2 : TARGET_68040 ? 3 : TARGET_68020 ? 8 : 5) -#define DIVW_COST (TARGET_68020 ? 27 : 12) - -#define RTX_COSTS(X,CODE,OUTER_CODE) \ - case PLUS: \ - /* An lea costs about three times as much as a simple add. */ \ - if (GET_MODE (X) == SImode \ - && GET_CODE (XEXP (X, 1)) == REG \ - && GET_CODE (XEXP (X, 0)) == MULT \ - && GET_CODE (XEXP (XEXP (X, 0), 0)) == REG \ - && GET_CODE (XEXP (XEXP (X, 0), 1)) == CONST_INT \ - && (INTVAL (XEXP (XEXP (X, 0), 1)) == 2 \ - || INTVAL (XEXP (XEXP (X, 0), 1)) == 4 \ - || INTVAL (XEXP (XEXP (X, 0), 1)) == 8)) \ - return COSTS_N_INSNS (3); /* lea an@(dx:l:i),am */ \ - break; \ - case ASHIFT: \ - case ASHIFTRT: \ - case LSHIFTRT: \ - if (TARGET_68060) \ - return COSTS_N_INSNS(1); \ - if (! TARGET_68020) \ - { \ - if (GET_CODE (XEXP (X, 1)) == CONST_INT) \ - { \ - if (INTVAL (XEXP (X, 1)) < 16) \ - return COSTS_N_INSNS (2) + INTVAL (XEXP (X, 1)) / 2; \ - else \ - /* We're using clrw + swap for these cases. */ \ - return COSTS_N_INSNS (4) + (INTVAL (XEXP (X, 1)) - 16) / 2; \ - } \ - return COSTS_N_INSNS (10); /* worst case */ \ - } \ - /* A shift by a big integer takes an extra instruction. */ \ - if (GET_CODE (XEXP (X, 1)) == CONST_INT \ - && (INTVAL (XEXP (X, 1)) == 16)) \ - return COSTS_N_INSNS (2); /* clrw;swap */ \ - if (GET_CODE (XEXP (X, 1)) == CONST_INT \ - && !(INTVAL (XEXP (X, 1)) > 0 \ - && INTVAL (XEXP (X, 1)) <= 8)) \ - return COSTS_N_INSNS (3); /* lsr #i,dn */ \ - break; \ - case MULT: \ - if ((GET_CODE (XEXP (X, 0)) == ZERO_EXTEND \ - || GET_CODE (XEXP (X, 0)) == SIGN_EXTEND) \ - && GET_MODE (X) == SImode) \ - return COSTS_N_INSNS (MULW_COST); \ - if (GET_MODE (X) == QImode || GET_MODE (X) == HImode) \ - return COSTS_N_INSNS (MULW_COST); \ - else \ - return COSTS_N_INSNS (MULL_COST); \ - case DIV: \ - case UDIV: \ - case MOD: \ - case UMOD: \ - if (GET_MODE (X) == QImode || GET_MODE (X) == HImode) \ - return COSTS_N_INSNS (DIVW_COST); /* div.w */ \ - return COSTS_N_INSNS (43); /* div.l */ - -/* Tell final.c how to eliminate redundant test instructions. */ - -/* Here we define machine-dependent flags and fields in cc_status - (see `conditions.h'). */ - -/* Set if the cc value is actually in the 68881, so a floating point - conditional branch must be output. */ -#define CC_IN_68881 04000 - -/* Store in cc_status the expressions that the condition codes will - describe after execution of an instruction whose pattern is EXP. - Do not alter them if the instruction would not alter the cc's. */ - -/* On the 68000, all the insns to store in an address register fail to - set the cc's. However, in some cases these instructions can make it - possibly invalid to use the saved cc's. In those cases we clear out - some or all of the saved cc's so they won't be used. */ - -#define NOTICE_UPDATE_CC(EXP,INSN) notice_update_cc (EXP, INSN) - -#define OUTPUT_JUMP(NORMAL, FLOAT, NO_OV) \ -{ if (cc_prev_status.flags & CC_IN_68881) \ - return FLOAT; \ - if (cc_prev_status.flags & CC_NO_OVERFLOW) \ - return NO_OV; \ - return NORMAL; } - -/* Control the assembler format that we output. */ - -/* Output at beginning of assembler file. */ - -#define ASM_FILE_START(FILE) \ - fprintf (FILE, "#NO_APP\n"); - -/* Output to assembler file text saying following lines - may contain character constants, extra white space, comments, etc. */ - -#define ASM_APP_ON "#APP\n" - -/* Output to assembler file text saying following lines - no longer contain unusual constructs. */ - -#define ASM_APP_OFF "#NO_APP\n" - -/* Output before read-only data. */ - -#define TEXT_SECTION_ASM_OP ".text" - -/* Output before writable data. */ - -#define DATA_SECTION_ASM_OP ".data" - -/* Here are four prefixes that are used by asm_fprintf to - facilitate customization for alternate assembler syntaxes. - Machines with no likelihood of an alternate syntax need not - define these and need not use asm_fprintf. */ - -/* The prefix for register names. Note that REGISTER_NAMES - is supposed to include this prefix. */ - -#define REGISTER_PREFIX "" - -/* The prefix for local labels. You should be able to define this as - an empty string, or any arbitrary string (such as ".", ".L%", etc) - without having to make any other changes to account for the specific - definition. Note it is a string literal, not interpreted by printf - and friends. */ - -#define LOCAL_LABEL_PREFIX "" - -/* The prefix to add to user-visible assembler symbols. */ - -#define USER_LABEL_PREFIX "_" - -/* The prefix for immediate operands. */ - -#define IMMEDIATE_PREFIX "#" - -/* How to refer to registers in assembler output. - This sequence is indexed by compiler's hard-register-number (see above). */ - -#ifndef SUPPORT_SUN_FPA - -#define REGISTER_NAMES \ -{"d0", "d1", "d2", "d3", "d4", "d5", "d6", "d7", \ - "a0", "a1", "a2", "a3", "a4", "a5", "a6", "sp", \ - "fp0", "fp1", "fp2", "fp3", "fp4", "fp5", "fp6", "fp7" } - -#else /* SUPPORTED_SUN_FPA */ - -#define REGISTER_NAMES \ -{"d0", "d1", "d2", "d3", "d4", "d5", "d6", "d7", \ - "a0", "a1", "a2", "a3", "a4", "a5", "a6", "sp", \ - "fp0", "fp1", "fp2", "fp3", "fp4", "fp5", "fp6", "fp7", \ - "fpa0", "fpa1", "fpa2", "fpa3", "fpa4", "fpa5", "fpa6", "fpa7", \ - "fpa8", "fpa9", "fpa10", "fpa11", "fpa12", "fpa13", "fpa14", "fpa15", \ - "fpa16", "fpa17", "fpa18", "fpa19", "fpa20", "fpa21", "fpa22", "fpa23", \ - "fpa24", "fpa25", "fpa26", "fpa27", "fpa28", "fpa29", "fpa30", "fpa31" } - -#endif /* defined SUPPORT_SUN_FPA */ - -/* How to renumber registers for dbx and gdb. - On the Sun-3, the floating point registers have numbers - 18 to 25, not 16 to 23 as they do in the compiler. */ - -#define DBX_REGISTER_NUMBER(REGNO) ((REGNO) < 16 ? (REGNO) : (REGNO) + 2) - -/* Before the prologue, RA is at 0(%sp). */ -#define INCOMING_RETURN_ADDR_RTX \ - gen_rtx_MEM (VOIDmode, gen_rtx_REG (VOIDmode, STACK_POINTER_REGNUM)) - -/* We must not use the DBX register numbers for the DWARF 2 CFA column - numbers because that maps to numbers beyond FIRST_PSEUDO_REGISTER. - Instead use the identity mapping. */ -#define DWARF_FRAME_REGNUM(REG) REG - -/* Before the prologue, the top of the frame is at 4(%sp). */ -#define INCOMING_FRAME_SP_OFFSET 4 - -/* This is how to output the definition of a user-level label named NAME, - such as the label on a static function or variable NAME. */ - -#define ASM_OUTPUT_LABEL(FILE,NAME) \ - do { assemble_name (FILE, NAME); fputs (":\n", FILE); } while (0) - -/* This is how to output a command to make the user-level label named NAME - defined for reference from other files. */ - -#define GLOBAL_ASM_OP ".globl" -#define ASM_GLOBALIZE_LABEL(FILE,NAME) \ - do { fprintf (FILE, "%s ", GLOBAL_ASM_OP); \ - assemble_name (FILE, NAME); \ - fputs ("\n", FILE);} while (0) - -/* This is how to output a reference to a user-level label named NAME. - `assemble_name' uses this. */ - -#define ASM_OUTPUT_LABELREF(FILE,NAME) \ - asm_fprintf (FILE, "%0U%s", NAME) - -/* This is how to output an internal numbered label where - PREFIX is the class of label and NUM is the number within the class. */ - -#define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM) \ - asm_fprintf (FILE, "%0L%s%d:\n", PREFIX, NUM) - -/* This is how to store into the string LABEL - the symbol_ref name of an internal numbered label where - PREFIX is the class of label and NUM is the number within the class. - This is suitable for output with `assemble_name'. */ - -#define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \ - sprintf (LABEL, "*%s%s%d", LOCAL_LABEL_PREFIX, PREFIX, NUM) - -/* This is how to output a `long double' extended real constant. */ - -#define ASM_OUTPUT_LONG_DOUBLE(FILE,VALUE) \ -do { long l[3]; \ - REAL_VALUE_TO_TARGET_LONG_DOUBLE (VALUE, l); \ - fprintf (FILE, "\t.long 0x%lx,0x%lx,0x%lx\n", l[0], l[1], l[2]); \ - } while (0) - -/* This is how to output an assembler line defining a `double' constant. */ - -#define ASM_OUTPUT_DOUBLE(FILE,VALUE) \ - do { char dstr[30]; \ - REAL_VALUE_TO_DECIMAL (VALUE, "%.20g", dstr); \ - fprintf (FILE, "\t.double 0r%s\n", dstr); \ - } while (0) - -/* This is how to output an assembler line defining a `float' constant. */ - -#define ASM_OUTPUT_FLOAT(FILE,VALUE) \ -do { long l; \ - REAL_VALUE_TO_TARGET_SINGLE (VALUE, l); \ - fprintf (FILE, "\t.long 0x%lx\n", l); \ - } while (0) - -/* This is how to output an assembler line defining an `int' constant. */ - -#define ASM_OUTPUT_INT(FILE,VALUE) \ -( fprintf (FILE, "\t.long "), \ - output_addr_const (FILE, (VALUE)), \ - fprintf (FILE, "\n")) - -/* Likewise for `char' and `short' constants. */ - -#define ASM_OUTPUT_SHORT(FILE,VALUE) \ -( fprintf (FILE, "\t.word "), \ - output_addr_const (FILE, (VALUE)), \ - fprintf (FILE, "\n")) - -#define ASM_OUTPUT_CHAR(FILE,VALUE) \ -( fprintf (FILE, "\t.byte "), \ - output_addr_const (FILE, (VALUE)), \ - fprintf (FILE, "\n")) - -/* This is how to output an assembler line for a numeric constant byte. */ - -#define ASM_OUTPUT_BYTE(FILE,VALUE) \ - fprintf (FILE, "\t.byte 0x%x\n", (VALUE)) - -/* This is how to output an insn to push a register on the stack. - It need not be very fast code. */ - -#define ASM_OUTPUT_REG_PUSH(FILE,REGNO) \ - asm_fprintf (FILE, "\tmovel %s,%Rsp@-\n", reg_names[REGNO]) - -/* This is how to output an insn to pop a register from the stack. - It need not be very fast code. */ - -#define ASM_OUTPUT_REG_POP(FILE,REGNO) \ - asm_fprintf (FILE, "\tmovel %Rsp@+,%s\n", reg_names[REGNO]) - -/* This is how to output an element of a case-vector that is absolute. - (The 68000 does not use such vectors, - but we must define this macro anyway.) */ - -#define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \ - asm_fprintf (FILE, "\t.long %LL%d\n", VALUE) - -/* This is how to output an element of a case-vector that is relative. */ - -#define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \ - asm_fprintf (FILE, "\t.word %LL%d-%LL%d\n", VALUE, REL) - -/* This is how to output an assembler line - that says to advance the location counter - to a multiple of 2**LOG bytes. */ - -/* We don't have a way to align to more than a two-byte boundary, so do the - best we can and don't complain. */ -#define ASM_OUTPUT_ALIGN(FILE,LOG) \ - if ((LOG) >= 1) \ - fprintf (FILE, "\t.even\n"); - -#define ASM_OUTPUT_SKIP(FILE,SIZE) \ - fprintf (FILE, "\t.skip %u\n", (SIZE)) - -/* This says how to output an assembler line - to define a global common symbol. */ - -#define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED) \ -( fputs (".comm ", (FILE)), \ - assemble_name ((FILE), (NAME)), \ - fprintf ((FILE), ",%u\n", (ROUNDED))) - -/* This says how to output an assembler line - to define a local common symbol. */ - -#define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED) \ -( fputs (".lcomm ", (FILE)), \ - assemble_name ((FILE), (NAME)), \ - fprintf ((FILE), ",%u\n", (ROUNDED))) - -/* Store in OUTPUT a string (made with alloca) containing - an assembler-name for a local static variable named NAME. - LABELNO is an integer which is different for each call. */ - -#define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO) \ -( (OUTPUT) = (char *) alloca (strlen ((NAME)) + 10), \ - sprintf ((OUTPUT), "%s.%d", (NAME), (LABELNO))) - -/* Define the parentheses used to group arithmetic operations - in assembler code. */ - -#define ASM_OPEN_PAREN "(" -#define ASM_CLOSE_PAREN ")" - -/* Define results of standard character escape sequences. */ -#define TARGET_BELL 007 -#define TARGET_BS 010 -#define TARGET_TAB 011 -#define TARGET_NEWLINE 012 -#define TARGET_VT 013 -#define TARGET_FF 014 -#define TARGET_CR 015 - -/* Output a float value (represented as a C double) as an immediate operand. - This macro is a 68k-specific macro. */ - -#define ASM_OUTPUT_FLOAT_OPERAND(CODE,FILE,VALUE) \ - do { \ - if (CODE == 'f') \ - { \ - char dstr[30]; \ - REAL_VALUE_TO_DECIMAL (VALUE, "%.9g", dstr); \ - asm_fprintf ((FILE), "%I0r%s", dstr); \ - } \ - else \ - { \ - long l; \ - REAL_VALUE_TO_TARGET_SINGLE (VALUE, l); \ - asm_fprintf ((FILE), "%I0x%lx", l); \ - } \ - } while (0) - -/* Output a double value (represented as a C double) as an immediate operand. - This macro is a 68k-specific macro. */ -#define ASM_OUTPUT_DOUBLE_OPERAND(FILE,VALUE) \ - do { char dstr[30]; \ - REAL_VALUE_TO_DECIMAL (VALUE, "%.20g", dstr); \ - asm_fprintf (FILE, "%I0r%s", dstr); \ - } while (0) - -/* Note, long double immediate operands are not actually - generated by m68k.md. */ -#define ASM_OUTPUT_LONG_DOUBLE_OPERAND(FILE,VALUE) \ - do { char dstr[30]; \ - REAL_VALUE_TO_DECIMAL (VALUE, "%.20g", dstr); \ - asm_fprintf (FILE, "%I0r%s", dstr); \ - } while (0) - -/* Print operand X (an rtx) in assembler syntax to file FILE. - CODE is a letter or dot (`z' in `%z0') or 0 if no letter was specified. - For `%' followed by punctuation, CODE is the punctuation and X is null. - - On the 68000, we use several CODE characters: - '.' for dot needed in Motorola-style opcode names. - '-' for an operand pushing on the stack: - sp@-, -(sp) or -(%sp) depending on the style of syntax. - '+' for an operand pushing on the stack: - sp@+, (sp)+ or (%sp)+ depending on the style of syntax. - '@' for a reference to the top word on the stack: - sp@, (sp) or (%sp) depending on the style of syntax. - '#' for an immediate operand prefix (# in MIT and Motorola syntax - but & in SGS syntax). - '!' for the fpcr register (used in some float-to-fixed conversions). - '$' for the letter `s' in an op code, but only on the 68040. - '&' for the letter `d' in an op code, but only on the 68040. - '/' for register prefix needed by longlong.h. - - 'b' for byte insn (no effect, on the Sun; this is for the ISI). - 'd' to force memory addressing to be absolute, not relative. - 'f' for float insn (print a CONST_DOUBLE as a float rather than in hex) - 'w' for FPA insn (print a CONST_DOUBLE as a SunFPA constant rather - than directly). Second part of 'y' below. - 'x' for float insn (print a CONST_DOUBLE as a float rather than in hex), - or print pair of registers as rx:ry. - 'y' for a FPA insn (print pair of registers as rx:ry). This also outputs - CONST_DOUBLE's as SunFPA constant RAM registers if - possible, so it should not be used except for the SunFPA. */ - -#define PRINT_OPERAND_PUNCT_VALID_P(CODE) \ - ((CODE) == '.' || (CODE) == '#' || (CODE) == '-' \ - || (CODE) == '+' || (CODE) == '@' || (CODE) == '!' \ - || (CODE) == '$' || (CODE) == '&' || (CODE) == '/') - -/* 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. - - See m68k.c for the m68k specific codes. */ - -#define PRINT_OPERAND(FILE, X, CODE) print_operand (FILE, X, CODE) - -/* A C compound statement to output to stdio stream STREAM the - assembler syntax for an instruction operand that is a memory - reference whose address is ADDR. ADDR is an RTL expression. - - On some machines, the syntax for a symbolic address depends on - the section that the address refers to. On these machines, - define the macro `ENCODE_SECTION_INFO' to store the information - into the `symbol_ref', and then check for it here. */ - -#define PRINT_OPERAND_ADDRESS(FILE, ADDR) print_operand_address (FILE, ADDR) - -/* Define functions defined in aux-output.c and used in templates. */ - -extern char *output_move_const_into_data_reg (); -extern char *output_move_simode_const (); -extern char *output_move_simode (); -extern char *output_move_himode (); -extern char *output_move_qimode (); -extern char *output_move_stricthi (); -extern char *output_move_strictqi (); -extern char *output_move_double (); -extern char *output_move_const_single (); -extern char *output_move_const_double (); -extern char *output_btst (); -extern char *output_scc_di (); -extern char *output_addsi3 (); -extern char *output_andsi3 (); -extern char *output_iorsi3 (); -extern char *output_xorsi3 (); -extern void output_dbcc_and_branch (); -extern int const_uint32_operand (); -extern int const_sint32_operand (); -extern int floating_exact_log2 (); -extern int not_sp_operand (); -extern int valid_dbcc_comparison_p (); -extern int extend_operator (); -extern int flags_in_68881 (); -extern int strict_low_part_peephole_ok (); - -/* Variables in m68k.c */ -extern char *m68k_align_loops_string; -extern char *m68k_align_jumps_string; -extern char *m68k_align_funcs_string; -extern int m68k_align_loops; -extern int m68k_align_jumps; -extern int m68k_align_funcs; -extern int m68k_last_compare_had_fp_operands; - -/* Functions from m68k.c used in macros. */ -extern int symbolic_operand (); -extern int const_int_cost (); -extern int standard_68881_constant_p (); -extern int standard_sun_fpa_constant_p (); -extern void output_function_prologue (); -extern void output_function_epilogue (); -extern int use_return_insn (); -extern void print_operand_address (); -extern void print_operand (); -extern void notice_update_cc (); -extern void finalize_pic (); -extern void override_options (); - - -/* -Local variables: -version-control: t -End: -*/ |