bc1ebe6373
From-SVN: r4320
1162 lines
38 KiB
C++
1162 lines
38 KiB
C++
/* Definitions of target machine for GNU compiler, for Hitachi Super-H.
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Copyright (C) 1993 Free Software Foundation, Inc.
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Contributed by Steve Chamberlain (sac@cygnus.com)
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This file is part of GNU CC.
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GNU CC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU CC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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/* Run-time Target Specification. */
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#define TARGET_SH
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#define TARGET_VERSION \
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fputs (" (Hitachi SH)", stderr);
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/* Generate SDB debugging information. */
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#define SDB_DEBUGGING_INFO 1
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#define SDB_DELIM ";"
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#define CPP_PREDEFINES "-D__sh__"
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/* Omitting the frame pointer is a very good idea on the SH */
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#define OPTIMIZATION_OPTIONS(OPTIMIZE) \
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{ \
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if (OPTIMIZE) \
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flag_omit_frame_pointer = 1; \
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if (OPTIMIZE==0)OPTIMIZE=1; \
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}
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/* Run-time compilation parameters selecting different hardware subsets. */
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extern int target_flags;
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#define ISIZE_BIT 1
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#define FAST_BIT 2
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#define MULSI3_BIT 4
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#define MAC_BIT 8
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#define RTL_BIT 16
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#define DT_BIT 32
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#define DALIGN_BIT 64
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/* Nonzero if we should generate code using muls.l insn */
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#define TARGET_HAS_MULSI3 (target_flags & MULSI3_BIT)
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/* Nonzero if we should generate faster code rather than smaller code */
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#define TARGET_FASTCODE (target_flags & FAST_BIT)
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/* Nonzero if we should dump out instruction size info */
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#define TARGET_DUMPISIZE (target_flags & ISIZE_BIT)
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/* Nonzero if we should try to generate mac instructions */
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#define TARGET_MAC (target_flags & MAC_BIT)
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/* Nonzero if we should dump the rtl in the assembly file. */
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#define TARGET_DUMP_RTL (target_flags & RTL_BIT)
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/* Nonzero if the target has a decrement and test instruction .*/
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#define TARGET_HAS_DT (target_flags & DT_BIT)
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/* Nonzero to align doubles on 64 bit boundaries */
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#define TARGET_ALIGN_DOUBLE (target_flags & DALIGN_BIT)
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#define TARGET_SWITCHES \
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{ {"isize", ( ISIZE_BIT) },\
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{"space", (-FAST_BIT) },\
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{"hasmulsi", ( MULSI3_BIT) },\
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{"hasdt", ( DT_BIT) },\
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{"ac", ( MAC_BIT) },\
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{"dalign", ( DALIGN_BIT) },\
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{"", TARGET_DEFAULT} \
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}
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#define TARGET_DEFAULT FAST_BIT
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/* Target machine storage Layout. */
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/* Define this if most significant bit is lowest numbered
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in instructions that operate on numbered bit-fields. */
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#define BITS_BIG_ENDIAN 0
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/* Define this if most significant byte of a word is the lowest numbered. */
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#define BYTES_BIG_ENDIAN 1
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/* Define this if most significant word of a multiword number is the lowest
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numbered. */
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#define WORDS_BIG_ENDIAN 1
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/* Number of bits in an addressable storage unit */
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#define BITS_PER_UNIT 8
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/* Width in bits of a "word", which is the contents of a machine register.
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Note that this is not necessarily the width of data type `int';
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if using 16-bit ints on a 68000, this would still be 32.
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But on a machine with 16-bit registers, this would be 16. */
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#define BITS_PER_WORD 32
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#define MAX_BITS_PER_WORD 32
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/* Width of a word, in units (bytes). */
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#define UNITS_PER_WORD 4
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/* Width in bits of a pointer.
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See also the macro `Pmode' defined below. */
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#define POINTER_SIZE 32
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/* Allocation boundary (in *bits*) for storing arguments in argument list. */
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#define PARM_BOUNDARY 32
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/* Boundary (in *bits*) on which stack pointer should be aligned. */
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#define STACK_BOUNDARY 32
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/* Allocation boundary (in *bits*) for the code of a function. */
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#define FUNCTION_BOUNDARY 16
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/* Alignment of field after `int : 0' in a structure. */
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#define EMPTY_FIELD_BOUNDARY 32
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/* No data type wants to be aligned rounder than this. */
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#define BIGGEST_ALIGNMENT (TARGET_ALIGN_DOUBLE ? 64 : 32)
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/* The best alignment to use in cases where we have a choice. */
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#define FASTEST_ALIGNMENT 32
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/* Every structures size must be a multiple of 32 bits. */
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#define STRUCTURE_SIZE_BOUNDARY 32
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/* Make strings word-aligned so strcpy from constants will be faster. */
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#define CONSTANT_ALIGNMENT(EXP, ALIGN) \
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((TREE_CODE (EXP) == STRING_CST \
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&& (ALIGN) < FASTEST_ALIGNMENT) \
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? FASTEST_ALIGNMENT : (ALIGN))
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/* Make arrays of chars word-aligned for the same reasons. */
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#define DATA_ALIGNMENT(TYPE, ALIGN) \
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(TREE_CODE (TYPE) == ARRAY_TYPE \
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&& TYPE_MODE (TREE_TYPE (TYPE)) == QImode \
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&& (ALIGN) < FASTEST_ALIGNMENT ? FASTEST_ALIGNMENT : (ALIGN))
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/* Set this nonzero if move instructions will actually fail to work
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when given unaligned data. */
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#define STRICT_ALIGNMENT 1
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/* Standard register usage. */
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/* Register allocation for our first guess
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r0-r3 scratch
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r4-r7 args in and out
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r8-r11 call saved
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r12
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r13 assembler temp
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r14 frame pointer
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r15 stack pointer
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ap arg pointer (doesn't really exist, always eliminated)
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pr subroutine return address
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t t bit
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mach multiply/accumulate result
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macl
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*/
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/* Number of actual hardware registers.
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The hardware registers are assigned numbers for the compiler
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from 0 to just below FIRST_PSEUDO_REGISTER.
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All registers that the compiler knows about must be given numbers,
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even those that are not normally considered general registers.
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SH has 16 integer registers and 4 control registers + the arg
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pointer */
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#define FIRST_PSEUDO_REGISTER 22
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#define PR_REG 17
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#define T_REG 18
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#define GBR_REG 19
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#define MACH_REG 20
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#define MACL_REG 21
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/* 1 for registers that have pervasive standard uses
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and are not available for the register allocator. */
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/* r0 r1 r2 r3 r4 r5 r6 r7 r8
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r9 r10 r11 r12 r13 r14 r15 ap pr t gbr mh ml */
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#define FIXED_REGISTERS \
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{ 0, 0, 0, 0, 0, 0, 0, 0, 0, \
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0, 0, 0, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1}
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/* 1 for registers not available across function calls.
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These must include the FIXED_REGISTERS and also any
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registers that can be used without being saved.
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The latter must include the registers where values are returned
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and the register where structure-value addresses are passed.
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Aside from that, you can include as many other registers as you like. */
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/* r0 r1 r2 r3 r4 r5 r6 r7 r8
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r9 r10 r11 r12 r13 r14 r15 ap pr t gbr mh ml */
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#define CALL_USED_REGISTERS \
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{ 1, 1, 1, 1, 1, 1, 1, 1, 0, \
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0, 0, 0, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1}
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/* Return number of consecutive hard regs needed starting at reg REGNO
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to hold something of mode MODE.
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This is ordinarily the length in words of a value of mode MODE
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but can be less for certain modes in special long registers.
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On the SH regs are UNITS_PER_WORD bits wide; */
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#define HARD_REGNO_NREGS(REGNO, MODE) \
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(((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD))
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/* Value is 1 if hard register REGNO can hold a value of machine-mode MODE.
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We may keep double values in even registers */
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#define HARD_REGNO_MODE_OK(REGNO, MODE) \
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((TARGET_ALIGN_DOUBLE && GET_MODE_SIZE(MODE) > 4) ? (((REGNO)&1)==0) : 1)
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/* Value is 1 if it is a good idea to tie two pseudo registers
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when one has mode MODE1 and one has mode MODE2.
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If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2,
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for any hard reg, then this must be 0 for correct output. */
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#define MODES_TIEABLE_P(MODE1, MODE2) \
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((MODE1) == (MODE2) || GET_MODE_CLASS (MODE1) == GET_MODE_CLASS (MODE2))
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/* Specify the registers used for certain standard purposes.
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The values of these macros are register numbers. */
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/* Define this if the program counter is overloaded on a register. */
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/* #define PC_REGNUM 15*/
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/* Register to use for pushing function arguments. */
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#define STACK_POINTER_REGNUM 15
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/* Base register for access to local variables of the function. */
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#define FRAME_POINTER_REGNUM 14
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/* Value should be nonzero if functions must have frame pointers.
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Zero means the frame pointer need not be set up (and parms may be accessed
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via the stack pointer) in functions that seem suitable. */
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#define FRAME_POINTER_REQUIRED 0
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/* Definitions for register eliminations.
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We have two registers that can be eliminated on the m88k. First, the
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frame pointer register can often be eliminated in favor of the stack
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pointer register. Secondly, the argument pointer register can always be
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eliminated; it is replaced with either the stack or frame pointer. */
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/* This is an array of structures. Each structure initializes one pair
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of eliminable registers. The "from" register number is given first,
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followed by "to". Eliminations of the same "from" register are listed
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in order of preference. */
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#define ELIMINABLE_REGS \
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{{ FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
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{ ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
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{ ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM},}
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/* Given FROM and TO register numbers, say whether this elimination
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is allowed. */
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#define CAN_ELIMINATE(FROM, TO) \
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(!((FROM) == FRAME_POINTER_REGNUM && FRAME_POINTER_REQUIRED))
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/* Define the offset between two registers, one to be eliminated, and the other
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its replacement, at the start of a routine. */
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#define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
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OFFSET = initial_elimination_offset (FROM, TO)
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/* Base register for access to arguments of the function. */
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#define ARG_POINTER_REGNUM 16
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/* Register in which the static-chain is passed to a function. */
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#define STATIC_CHAIN_REGNUM 13
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/* If the structure value address is not passed in a register, define
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this as an expression returning an RTX for the place
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where the address is passed. If it returns 0, the address is
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passed as an "invisible" first argument. */
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#define STRUCT_VALUE 0
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/* Define the classes of registers for register constraints in the
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machine description. Also define ranges of constants.
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One of the classes must always be named ALL_REGS and include all hard regs.
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If there is more than one class, another class must be named NO_REGS
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and contain no registers.
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The name GENERAL_REGS must be the name of a class (or an alias for
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another name such as ALL_REGS). This is the class of registers
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that is allowed by "g" or "r" in a register constraint.
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Also, registers outside this class are allocated only when
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instructions express preferences for them.
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The classes must be numbered in nondecreasing order; that is,
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a larger-numbered class must never be contained completely
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in a smaller-numbered class.
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For any two classes, it is very desirable that there be another
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class that represents their union. */
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/* The SH has two sorts of general registers, R0 and the rest. R0 can
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be used as the destination of some of the arithmetic ops. There are
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also some special purpose registers; the T bit register, the
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Procedure Return Register and the Multipy Accumulate Registers */
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enum reg_class
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{
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NO_REGS,
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R0_REGS,
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GENERAL_REGS,
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PR_REGS,
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T_REGS,
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MAC_REGS,
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ALL_REGS,
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LIM_REG_CLASSES
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};
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#define N_REG_CLASSES (int) LIM_REG_CLASSES
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/* Give names of register classes as strings for dump file. */
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#define REG_CLASS_NAMES \
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{ \
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"NO_REGS", \
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"R0_REGS", \
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"GENERAL_REGS", \
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"PR_REGS", \
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"T_REGS", \
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"MAC_REGS", \
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"ALL_REGS", \
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}
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/* Define which registers fit in which classes.
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This is an initializer for a vector of HARD_REG_SET
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of length N_REG_CLASSES. */
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#define REG_CLASS_CONTENTS \
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{ \
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0x000000, /* NO_REGS */ \
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0x000001, /* R0_REGS */ \
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0x01FFFF, /* GENERAL_REGS */ \
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0x020000, /* PR_REGS */ \
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0x040000, /* T_REGS */ \
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0x300000, /* MAC_REGS */ \
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0x37FFFF /* ALL_REGS */ \
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}
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/* The same information, inverted:
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Return the class number of the smallest class containing
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reg number REGNO. This could be a conditional expression
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or could index an array. */
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extern int regno_reg_class[];
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#define REGNO_REG_CLASS(REGNO) regno_reg_class[REGNO]
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/* The order in which register should be allocated. */
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#define REG_ALLOC_ORDER \
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{ 1,2,3,0,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21}
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/* The class value for index registers, and the one for base regs. */
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#define INDEX_REG_CLASS R0_REGS
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#define BASE_REG_CLASS GENERAL_REGS
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/* Get reg_class from a letter such as appears in the machine
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description. */
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extern enum reg_class reg_class_from_letter[];
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#define REG_CLASS_FROM_LETTER(C) \
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( (C) >= 'a' && (C) <= 'z' ? reg_class_from_letter[(C)-'a'] : NO_REGS )
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/* The letters I, J, K, L and M in a register constraint string
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can be used to stand for particular ranges of immediate operands.
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This macro defines what the ranges are.
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C is the letter, and VALUE is a constant value.
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Return 1 if VALUE is in the range specified by C.
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I: arithmetic operand -127..128, as used in add, sub, etc
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L: logical operand 0..255, as used in add, or, etc.
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M: constant 1
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K: shift operand 1,2,8 or 16 */
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#define CONST_OK_FOR_I(VALUE) ((VALUE)>= -128 && (VALUE) <= 127)
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#define CONST_OK_FOR_L(VALUE) ((VALUE)>= 0 && (VALUE) <= 255)
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#define CONST_OK_FOR_M(VALUE) ((VALUE)==1)
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#define CONST_OK_FOR_K(VALUE) ((VALUE)==1||(VALUE)==2||(VALUE)==8||(VALUE)==16)
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#define CONST_OK_FOR_LETTER_P(VALUE, C) \
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((C) == 'I' ? CONST_OK_FOR_I (VALUE) \
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: (C) == 'L' ? CONST_OK_FOR_L (VALUE) \
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: (C) == 'M' ? CONST_OK_FOR_M (VALUE) \
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: (C) == 'K' ? CONST_OK_FOR_K (VALUE) \
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: 0)
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/* Similar, but for floating constants, and defining letters G and H.
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Here VALUE is the CONST_DOUBLE rtx itself. */
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#define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) \
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((C) == 'G' ? CONST_OK_FOR_I (CONST_DOUBLE_HIGH (VALUE)) \
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&& CONST_OK_FOR_I (CONST_DOUBLE_LOW (VALUE)) \
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: 0)
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/* Given an rtx X being reloaded into a reg required to be
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in class CLASS, return the class of reg to actually use.
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In general this is just CLASS; but on some machines
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in some cases it is preferable to use a more restrictive class. */
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#define PREFERRED_RELOAD_CLASS(X, CLASS) (CLASS)
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/* Return the register class of a scratch register needed to copy IN into
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or out of a register in CLASS in MODE. If it can be done directly,
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NO_REGS is returned. */
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#define SECONDARY_RELOAD_CLASS(CLASS, MODE, X) NO_REGS
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/* Return the maximum number of consecutive registers
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needed to represent mode MODE in a register of class CLASS.
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On SH this is the size of MODE in words */
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#define CLASS_MAX_NREGS(CLASS, MODE) \
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((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
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/* Stack layout; function entry, exit and calling. */
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/* Define the number of register that can hold parameters.
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These two macros are used only in other macro definitions below. */
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#define NPARM_REGS 4
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#define FIRST_PARM_REG 4
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#define FIRST_RET_REG 4
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/* Define this if pushing a word on the stack
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makes the stack pointer a smaller address. */
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#define STACK_GROWS_DOWNWARD
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/* Define this if the nominal address of the stack frame
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is at the high-address end of the local variables;
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that is, each additional local variable allocated
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goes at a more negative offset in the frame. */
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#define FRAME_GROWS_DOWNWARD
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/* Offset within stack frame to start allocating local variables at.
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If FRAME_GROWS_DOWNWARD, this is the offset to the END of the
|
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first local allocated. Otherwise, it is the offset to the BEGINNING
|
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of the first local allocated. */
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#define STARTING_FRAME_OFFSET 0
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/* If we generate an insn to push BYTES bytes,
|
||
this says how many the stack pointer really advances by. */
|
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#define PUSH_ROUNDING(NPUSHED) (((NPUSHED) + 3) & ~3)
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|
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/* Offset of first parameter from the argument pointer register value. */
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#define FIRST_PARM_OFFSET(FNDECL) 0
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|
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/* Value is the number of byte of arguments automatically
|
||
popped when returning from a subroutine call.
|
||
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.
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||
|
||
On the SH, the caller does not pop any of its arguments that were passed
|
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on the stack. */
|
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#define RETURN_POPS_ARGS(FUNTYPE, SIZE) 0
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|
||
/* Define how to find the value returned by a function.
|
||
VALTYPE is the data type of the value (as a tree).
|
||
If the precise function being called is known, FUNC is its FUNCTION_DECL;
|
||
otherwise, FUNC is 0. */
|
||
#define FUNCTION_VALUE(VALTYPE, FUNC) \
|
||
gen_rtx (REG, TYPE_MODE (VALTYPE), FIRST_RET_REG)
|
||
|
||
/* Define how to find the value returned by a library function
|
||
assuming the value has mode MODE. */
|
||
#define LIBCALL_VALUE(MODE) \
|
||
gen_rtx (REG, MODE, FIRST_RET_REG)
|
||
|
||
/* 1 if N is a possible register number for a function value.
|
||
On the SH, only r4 can return results. */
|
||
#define FUNCTION_VALUE_REGNO_P(REGNO) \
|
||
((REGNO) == FIRST_RET_REG)
|
||
|
||
/* 1 if N is a possible register number for function argument passing.*/
|
||
|
||
#define FUNCTION_ARG_REGNO_P(REGNO) \
|
||
((REGNO) >= FIRST_PARM_REG && (REGNO) < (NPARM_REGS + FIRST_PARM_REG))
|
||
|
||
|
||
|
||
/* 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 SH, this is a single integer, which is a number of words
|
||
of arguments scanned so far (including the invisible argument,
|
||
if any, which holds the structure-value-address).
|
||
Thus NARGREGS or more means all following args should go on the stack. */
|
||
|
||
#define CUMULATIVE_ARGS int
|
||
|
||
#define ROUND_ADVANCE(SIZE) \
|
||
((SIZE + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
|
||
|
||
/* Round a register number up to a proper boundary for an arg of mode
|
||
MODE.
|
||
|
||
We round to an even reg for things larger than a word */
|
||
|
||
#define ROUND_REG(X, MODE) \
|
||
((TARGET_ALIGN_DOUBLE \
|
||
&& GET_MODE_UNIT_SIZE ((MODE)) > UNITS_PER_WORD) \
|
||
? ((X) + ((X) & 1)) : (X))
|
||
|
||
|
||
/* 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 SH, the offset always starts at 0: the first parm reg is always
|
||
the same reg. */
|
||
|
||
#define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME) \
|
||
((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) = (ROUND_REG ((CUM), (MODE)) \
|
||
+ ((MODE) != BLKmode \
|
||
? ROUND_ADVANCE (GET_MODE_SIZE (MODE)) \
|
||
: ROUND_ADVANCE (int_size_in_bytes (TYPE)))))
|
||
|
||
/* 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 SH the first args are normally in registers
|
||
and the rest are pushed. Any arg that starts within the first
|
||
NPARM_REGS words is at least partially passed in a register unless
|
||
its data type forbids. */
|
||
|
||
#define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \
|
||
(NAMED && ROUND_REG ((CUM), (MODE)) < NPARM_REGS \
|
||
&& ((TYPE)==0 || ! TREE_ADDRESSABLE ((tree)(TYPE))) \
|
||
&& ((TYPE)==0 || (MODE) != BLKmode \
|
||
|| (TYPE_ALIGN ((TYPE)) % PARM_BOUNDARY == 0)) \
|
||
? gen_rtx (REG, (MODE), \
|
||
(FIRST_PARM_REG + ROUND_REG ((CUM), (MODE)))) \
|
||
: 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.
|
||
Any arg that starts in the first NPARM_REGS regs but won't entirely
|
||
fit in them needs partial registers on the SH. */
|
||
|
||
#define FUNCTION_ARG_PARTIAL_NREGS(CUM, MODE, TYPE, NAMED) \
|
||
((ROUND_REG ((CUM), (MODE)) < NPARM_REGS \
|
||
&& ((TYPE)==0 || ! TREE_ADDRESSABLE ((tree)(TYPE))) \
|
||
&& ((TYPE)==0 || (MODE) != BLKmode \
|
||
|| (TYPE_ALIGN ((TYPE)) % PARM_BOUNDARY == 0)) \
|
||
&& (ROUND_REG ((CUM), (MODE)) \
|
||
+ ((MODE) == BLKmode \
|
||
? ROUND_ADVANCE (int_size_in_bytes (TYPE)) \
|
||
: ROUND_ADVANCE (GET_MODE_SIZE (MODE)))) - NPARM_REGS > 0) \
|
||
? (NPARM_REGS - ROUND_REG ((CUM), (MODE))) \
|
||
: 0)
|
||
|
||
extern int current_function_anonymous_args;
|
||
|
||
/* Perform any needed actions needed for a function that is receiving a
|
||
variable number of arguments. */
|
||
|
||
#define SETUP_INCOMING_VARARGS(ASF, MODE, TYPE, PAS, ST) \
|
||
current_function_anonymous_args = 1;
|
||
|
||
|
||
/* Generate assembly output for the start of a function. */
|
||
|
||
#define FUNCTION_PROLOGUE(STREAM, SIZE) \
|
||
output_prologue ((STREAM), (SIZE))
|
||
|
||
/* Call the function profiler with a given profile label. */
|
||
|
||
#define FUNCTION_PROFILER(STREAM,LABELNO) \
|
||
{ \
|
||
fprintf(STREAM, "\tsts.l pr,@-r15\n"); \
|
||
fprintf(STREAM, "\tjsr\tmcount\n"); \
|
||
fprintf(STREAM, "\tor r0,r0\n"); \
|
||
fprintf(STREAM, "\t.long\tLP%d\n", (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 0
|
||
|
||
/* Generate the assembly code for function exit. */
|
||
|
||
#define FUNCTION_EPILOGUE(STREAM, SIZE) \
|
||
output_epilogue ((STREAM), (SIZE))
|
||
|
||
#define ELIGIBLE_FOR_EPILOGUE_DELAY(INSN,N) \
|
||
(get_attr_in_delay_slot(INSN) == IN_DELAY_SLOT_YES)
|
||
|
||
#define DELAY_SLOTS_FOR_EPILOGUE \
|
||
delay_slots_for_epilogue();
|
||
|
||
/* Output assembler code for a block containing the constant parts
|
||
of a trampoline, leaving space for the variable parts.
|
||
|
||
On the SH, the trapoline looks like
|
||
1 0000 D301 mov.l l1,r3
|
||
2 0002 DD02 mov.l l2,r13
|
||
3 0004 4D2B jmp @r13
|
||
4 0006 200B or r0,r0
|
||
5 0008 00000000 l1: .long function
|
||
6 000c 00000000 l2: .long area
|
||
*/
|
||
#define TRAMPOLINE_TEMPLATE(FILE) \
|
||
{ \
|
||
fprintf ((FILE), " .word 0xd301\n"); \
|
||
fprintf ((FILE), " .word 0xdd02\n"); \
|
||
fprintf ((FILE), " .word 0x4d2b\n"); \
|
||
fprintf ((FILE), " .word 0x200b\n"); \
|
||
fprintf ((FILE), " .long 0\n"); \
|
||
fprintf ((FILE), " .long 0\n"); \
|
||
}
|
||
|
||
/* Length in units of the trampoline for entering a nested function. */
|
||
#define TRAMPOLINE_SIZE 16
|
||
|
||
/* Alignment required for a trampoline in units. */
|
||
#define TRAMPOLINE_ALIGN 4
|
||
|
||
/* 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) \
|
||
{ \
|
||
emit_move_insn (gen_rtx (MEM, SImode, plus_constant ((TRAMP), 8)), \
|
||
(CXT)); \
|
||
emit_move_insn (gen_rtx (MEM, SImode, plus_constant ((TRAMP), 12)), \
|
||
(FNADDR)); \
|
||
}
|
||
|
||
|
||
/* Addressing modes, and classification of registers for them. */
|
||
|
||
/*#define HAVE_POST_INCREMENT 1*/
|
||
/*#define HAVE_PRE_INCREMENT 1*/
|
||
/*#define HAVE_POST_DECREMENT 1*/
|
||
/*#define HAVE_PRE_DECREMENT 1*/
|
||
|
||
/* 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_BASE_P(REGNO) \
|
||
((REGNO) < PR_REG || (unsigned) reg_renumber[(REGNO)] < PR_REG)
|
||
|
||
#define REGNO_OK_FOR_INDEX_P(REGNO) ((REGNO)==0)
|
||
|
||
/* 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. */
|
||
|
||
#define CONSTANT_ADDRESS_P(X) \
|
||
(GET_CODE (X) == LABEL_REF)
|
||
#if 0
|
||
|
||
|| GET_CODE (X) == SYMBOL_REF \
|
||
|| GET_CODE (X) == CONST_INT \
|
||
|| GET_CODE (X) == CONST)
|
||
|
||
#endif
|
||
|
||
/* Nonzero if the constant value X is a legitimate general operand.
|
||
It is given that X satisfies CONSTANT_P or is a CONST_DOUBLE.
|
||
|
||
On the SH, allow any thing but a double */
|
||
|
||
#define LEGITIMATE_CONSTANT_P(X) \
|
||
(GET_CODE (X) != CONST_DOUBLE || GET_MODE (X) == VOIDmode)
|
||
|
||
/* 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. */
|
||
|
||
#ifndef REG_OK_STRICT
|
||
/* 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) <= 16 || REGNO(X) >= FIRST_PSEUDO_REGISTER)
|
||
|
||
/* 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)==0||REGNO(X)>=FIRST_PSEUDO_REGISTER)
|
||
#define REG_OK_FOR_PRE_POST_P(X) (REGNO(X) <= 16)
|
||
#else
|
||
|
||
/* 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))
|
||
/* 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))
|
||
#define REG_OK_FOR_PRE_POST_P(X) \
|
||
(REGNO (X) <= 16 || (unsigned) reg_renumber[REGNO (X)] <=16)
|
||
#endif
|
||
|
||
/* GO_IF_LEGITIMATE_ADDRESS recognizes an RTL expression
|
||
that is a valid memory address for an instruction.
|
||
The MODE argument is the machine mode for the MEM expression
|
||
that wants to use this address.
|
||
|
||
The other macros defined here are used only in GO_IF_LEGITIMATE_ADDRESS. */
|
||
#define BASE_REGISTER_RTX_P(X) \
|
||
(GET_CODE (X) == REG && REG_OK_FOR_BASE_P (X))
|
||
|
||
#define INDEX_REGISTER_RTX_P(X) \
|
||
(GET_CODE (X) == REG && REG_OK_FOR_INDEX_P (X))
|
||
|
||
|
||
/* Jump to LABEL if X is a valid address RTX. This must also take
|
||
REG_OK_STRICT into account when deciding about valid registers, but it uses
|
||
the above macros so we are in luck.
|
||
|
||
Allow REG
|
||
REG+disp
|
||
REG+r0
|
||
REG++
|
||
--REG
|
||
*/
|
||
|
||
/* A legitimate index for a QI or HI is 0, SI and above can be any
|
||
number 0..64 */
|
||
|
||
#define GO_IF_LEGITIMATE_INDEX(MODE, REGNO, OP, LABEL) \
|
||
do { \
|
||
if (GET_CODE (OP) == CONST_INT) \
|
||
{ \
|
||
if (GET_MODE_SIZE (MODE) < 4 && INTVAL(OP) == 0)\
|
||
goto LABEL; \
|
||
if (GET_MODE_SIZE (MODE) >=4 \
|
||
&& ((unsigned)INTVAL(OP)) < 64) \
|
||
goto LABEL; \
|
||
} \
|
||
} while(0)
|
||
|
||
|
||
|
||
#define GO_IF_LEGITIMATE_ADDRESS(MODE, X, LABEL) \
|
||
{ \
|
||
if (BASE_REGISTER_RTX_P (X)) \
|
||
goto LABEL; \
|
||
else if ((GET_CODE (X) == POST_INC || GET_CODE (X) == PRE_DEC) \
|
||
&& GET_CODE (XEXP (X, 0)) == REG \
|
||
&& REG_OK_FOR_PRE_POST_P (XEXP (X, 0))) \
|
||
goto LABEL; \
|
||
else if (GET_CODE (X) == PLUS) \
|
||
{ \
|
||
rtx xop0 = XEXP(X,0); \
|
||
rtx xop1 = XEXP(X,1); \
|
||
if (BASE_REGISTER_RTX_P (xop0)) \
|
||
GO_IF_LEGITIMATE_INDEX (MODE, REGNO (xop0), xop1, LABEL); \
|
||
else if (BASE_REGISTER_RTX_P (xop1)) \
|
||
GO_IF_LEGITIMATE_INDEX (MODE, REGNO (xop1), xop0, LABEL); \
|
||
} \
|
||
else if ((GET_CODE (X) == PRE_INC || GET_CODE (X) == POST_DEC) \
|
||
&& GET_CODE (XEXP (X, 0)) == REG \
|
||
&& REG_OK_FOR_PRE_POST_P (XEXP (X, 0))) \
|
||
goto LABEL; \
|
||
}
|
||
|
||
|
||
/* Try machine-dependent ways of modifying an illegitimate address
|
||
to be legitimate. If we find one, return the new, valid address.
|
||
This macro is used in only one place: `memory_address' in explow.c.
|
||
|
||
OLDX is the address as it was before break_out_memory_refs was called.
|
||
In some cases it is useful to look at this to decide what needs to be done.
|
||
|
||
MODE and WIN are passed so that this macro can use
|
||
GO_IF_LEGITIMATE_ADDRESS.
|
||
|
||
It is always safe for this macro to do nothing. It exists to recognize
|
||
opportunities to optimize the output.
|
||
|
||
On the SH we don't try anything */
|
||
|
||
#define LEGITIMIZE_ADDRESS(X, OLDX, MODE, WIN) ;
|
||
|
||
/* Go to LABEL if ADDR (a legitimate address expression)
|
||
has an effect that depends on the machine mode it is used for. */
|
||
#define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL) \
|
||
{ \
|
||
if (GET_CODE(ADDR) == PRE_DEC || GET_CODE(ADDR) == POST_DEC \
|
||
|| GET_CODE(ADDR) == PRE_INC || GET_CODE(ADDR) == POST_INC) \
|
||
goto LABEL; \
|
||
}
|
||
|
||
/* Specify the machine mode that this machine uses
|
||
for the index in the tablejump instruction. */
|
||
#define CASE_VECTOR_MODE SImode
|
||
|
||
/* Define this 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 */
|
||
|
||
/* 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
|
||
|
||
/* 'char' is signed by default */
|
||
#define DEFAULT_SIGNED_CHAR 1
|
||
|
||
/* The type of size_t unsigned int. */
|
||
#define SIZE_TYPE "unsigned int"
|
||
|
||
/* Don't cse the address of the function being compiled. */
|
||
#define NO_RECURSIVE_FUNCTION_CSE 1
|
||
|
||
/* Max number of bytes we can move from memory to memory
|
||
in one reasonably fast instruction. */
|
||
#define MOVE_MAX 4
|
||
|
||
/* Define if normal loads of shorter-than-word items from sign extends
|
||
the rest of the bigs in the register. */
|
||
#define BYTE_LOADS_SIGN_EXTEND 1
|
||
|
||
/* Define this if zero-extension is slow (more than one real instruction).
|
||
On the SH, it's only one instruction */
|
||
/* #define SLOW_ZERO_EXTEND */
|
||
|
||
/* Nonzero if access to memory by bytes is slow and undesirable. */
|
||
#define SLOW_BYTE_ACCESS 0
|
||
|
||
/* 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
|
||
|
||
/* Immediate shift counts are truncated by the output routines (or was it
|
||
the assembler?). Shift counts in a register are truncated by ARM. Note
|
||
that the native compiler puts too large (> 32) immediate shift counts
|
||
into a register and shifts by the register, letting the ARM decide what
|
||
to do instead of doing that itself. */
|
||
#define SHIFT_COUNT_TRUNCATED 1
|
||
|
||
/* We have the vprintf function. */
|
||
#define HAVE_VPRINTF 1
|
||
|
||
/* All integers have the same format so truncation is easy. */
|
||
#define TRULY_NOOP_TRUNCATION(OUTPREC,INPREC) 1
|
||
|
||
/* Define this if addresses of constant functions
|
||
shouldn't be put through pseudo regs where they can be cse'd.
|
||
Desirable on machines where ordinary constants are expensive
|
||
but a CALL with constant address is cheap. */
|
||
/*#define NO_FUNCTION_CSE 1*/
|
||
|
||
/* Chars and shorts should be passed as ints. */
|
||
#define PROMOTE_PROTOTYPES 1
|
||
|
||
/* The machine modes of pointers and functions */
|
||
#define Pmode SImode
|
||
#define FUNCTION_MODE Pmode
|
||
|
||
/* The structure type of the machine dependent info field of insns
|
||
No uses for this yet. */
|
||
/* #define INSN_MACHINE_INFO struct machine_info */
|
||
|
||
/* The relative costs of various types of constants. Note that cse.c defines
|
||
REG = 1, SUBREG = 2, any node = (2 + sum of subnodes). */
|
||
|
||
#define CONST_COSTS(RTX, CODE, OUTER_CODE) \
|
||
case CONST_INT: \
|
||
if (CONST_OK_FOR_I (INTVAL(RTX))) \
|
||
return 1; \
|
||
else \
|
||
return 5; \
|
||
case CONST: \
|
||
case LABEL_REF: \
|
||
case SYMBOL_REF: \
|
||
return 6; \
|
||
case CONST_DOUBLE: \
|
||
return 10;
|
||
|
||
#define RTX_COSTS(X, CODE, OUTER_CODE) \
|
||
case MULT: \
|
||
return COSTS_N_INSNS (TARGET_HAS_MULSI3 ? 2 : 20); \
|
||
case DIV: \
|
||
case UDIV: \
|
||
case MOD: \
|
||
case UMOD: \
|
||
return COSTS_N_INSNS (100); \
|
||
case FLOAT: \
|
||
case FIX: \
|
||
return 100;
|
||
|
||
/* Compute extra cost of moving data between one register class
|
||
and another.
|
||
|
||
On the SH it is hard to move into the T reg, but simple to load
|
||
from it.
|
||
*/
|
||
|
||
#define REGISTER_MOVE_COST(SRCCLASS, DSTCLASS) \
|
||
((DSTCLASS ==T_REGS) ? 10 : 2)
|
||
|
||
/* Assembler output control */
|
||
|
||
/* The text to go at the start of the assembler file */
|
||
#define ASM_FILE_START(STREAM) \
|
||
fprintf (STREAM,"! GCC for the Hitachi Super-H\n"); \
|
||
output_file_directive (STREAM, main_input_filename);
|
||
|
||
#define ASM_APP_ON ""
|
||
#define ASM_APP_OFF ""
|
||
|
||
#define FILE_ASM_OP "\t.file\n"
|
||
#define IDENT_ASM_OP "\t.ident\n"
|
||
|
||
|
||
/* Switch to the text or data segment. */
|
||
#define TEXT_SECTION_ASM_OP ".text"
|
||
#define DATA_SECTION_ASM_OP ".data"
|
||
|
||
/* The assembler's names for the registers. RFP need not always be used as
|
||
the Real framepointer; it can also be used as a normal general register.
|
||
Note that the name `fp' is horribly misleading since `fp' is in fact only
|
||
the argument-and-return-context pointer. */
|
||
#define REGISTER_NAMES \
|
||
{ \
|
||
"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \
|
||
"r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", \
|
||
"ap", "pr", "t", "gbr", "mach","macl" \
|
||
}
|
||
|
||
/* DBX register number for a given compiler register number */
|
||
#define DBX_REGISTER_NUMBER(REGNO) (REGNO)
|
||
|
||
/* Output a label definition. */
|
||
#define ASM_OUTPUT_LABEL(FILE,NAME) \
|
||
do { assemble_name (FILE, NAME); fputs (":\n", FILE); } while (0)
|
||
|
||
|
||
/* This is how to output an assembler line
|
||
that says to advance the location counter
|
||
to a multiple of 2**LOG bytes. */
|
||
|
||
#define ASM_OUTPUT_ALIGN(FILE,LOG) \
|
||
if ((LOG) != 0) \
|
||
fprintf (FILE, "\t.align %d\n", LOG)
|
||
|
||
/* Output a function label definition. */
|
||
#define ASM_DECLARE_FUNCTION_NAME(STREAM,NAME,DECL) \
|
||
ASM_OUTPUT_LABEL(STREAM, NAME)
|
||
|
||
/* Output a globalising directive for a label. */
|
||
#define ASM_GLOBALIZE_LABEL(STREAM,NAME) \
|
||
(fprintf (STREAM, "\t.global\t"), \
|
||
assemble_name (STREAM, NAME), \
|
||
fputc ('\n',STREAM)) \
|
||
|
||
/* Output a reference to a label. */
|
||
#define ASM_OUTPUT_LABELREF(STREAM,NAME) \
|
||
fprintf (STREAM, "_%s", NAME)
|
||
|
||
/* Make an internal label into a string. */
|
||
#define ASM_GENERATE_INTERNAL_LABEL(STRING, PREFIX, NUM) \
|
||
sprintf (STRING, "*%s%d", PREFIX, NUM)
|
||
|
||
/* Output an internal label definition. */
|
||
#define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM) \
|
||
fprintf (FILE, "%s%d:\n", PREFIX, NUM)
|
||
|
||
/* #define ASM_OUTPUT_CASE_END(STREAM,NUM,TABLE) */
|
||
|
||
/* Construct a private name. */
|
||
#define ASM_FORMAT_PRIVATE_NAME(OUTVAR,NAME,NUMBER) \
|
||
((OUTVAR) = (char *) alloca (strlen (NAME) + 10), \
|
||
sprintf ((OUTVAR), "%s.%d", (NAME), (NUMBER)))
|
||
|
||
/* Jump tables must be 32 bit aligned. */
|
||
#define ASM_OUTPUT_CASE_LABEL(STREAM,PREFIX,NUM,TABLE) \
|
||
fprintf (STREAM, "\t.align 2\n%s%d:\n", PREFIX, NUM);
|
||
|
||
/* Output a relative address. Not needed since jump tables are absolute
|
||
but we must define it anyway. */
|
||
#define ASM_OUTPUT_ADDR_DIFF_ELT(STREAM,VALUE,REL) \
|
||
fputs ("- - - ASM_OUTPUT_ADDR_DIFF_ELT called!\n", STREAM)
|
||
|
||
/* Output an element of a dispatch table. */
|
||
#define ASM_OUTPUT_ADDR_VEC_ELT(STREAM,VALUE) \
|
||
fprintf (STREAM, "\t.long\tL%d\n", VALUE)
|
||
|
||
/* Output various types of constants. */
|
||
|
||
|
||
/* This is how to output an assembler line defining a `double' */
|
||
|
||
#define ASM_OUTPUT_DOUBLE(FILE,VALUE) \
|
||
{ \
|
||
long t[2]; \
|
||
REAL_VALUE_TO_TARGET_DOUBLE ((VALUE), t); \
|
||
fprintf (FILE, "\t.long\t0x%lx\n\t.long\t0x%lx\n", \
|
||
t[0], t[1]); \
|
||
} \
|
||
|
||
/* This is how to output an assembler line defining a `float' constant. */
|
||
|
||
#define ASM_OUTPUT_FLOAT(FILE,VALUE) \
|
||
{ \
|
||
long t; \
|
||
REAL_VALUE_TO_TARGET_SINGLE ((VALUE), t); \
|
||
fprintf (FILE, "\t.long\t0x%lx\n", t); \
|
||
} \
|
||
|
||
#define ASM_OUTPUT_INT(STREAM, EXP) \
|
||
(fprintf (STREAM, "\t.long\t"), \
|
||
output_addr_const (STREAM, (EXP)), \
|
||
fputc ('\n', STREAM))
|
||
|
||
#define ASM_OUTPUT_SHORT(STREAM, EXP) \
|
||
(fprintf (STREAM, "\t.short\t"), \
|
||
output_addr_const (STREAM, (EXP)), \
|
||
fputc ('\n', STREAM))
|
||
|
||
#define ASM_OUTPUT_CHAR(STREAM, EXP) \
|
||
(fprintf (STREAM, "\t.byte\t"), \
|
||
output_addr_const (STREAM, (EXP)), \
|
||
fputc ('\n', STREAM))
|
||
|
||
#define ASM_OUTPUT_BYTE(STREAM, VALUE) \
|
||
fprintf (STREAM, "\t.byte\t%d\n", VALUE) \
|
||
|
||
/* This is how to output an assembler line
|
||
that says to advance the location counter by SIZE bytes. */
|
||
|
||
#define ASM_OUTPUT_SKIP(FILE,SIZE) \
|
||
fprintf (FILE, "\t.space %d\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), ",%d\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), ",%d\n", (SIZE)))
|
||
|
||
|
||
/* The assembler's parentheses characters. */
|
||
#define ASM_OPEN_PAREN "("
|
||
#define ASM_CLOSE_PAREN ")"
|
||
|
||
/* Target characters. */
|
||
#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
|
||
|
||
|
||
/* Only perform branch elimination (by making instructions conditional) if
|
||
we're optimising. Otherwise it's of no use anyway. */
|
||
#define FINAL_PRESCAN_INSN(INSN, OPVEC, NOPERANDS) \
|
||
final_prescan_insn (INSN, OPVEC, NOPERANDS)
|
||
|
||
/* 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(STREAM, X, CODE) print_operand (STREAM, X, CODE)
|
||
|
||
/* Print a memory address as an operand to reference that memory location. */
|
||
|
||
#define PRINT_OPERAND_ADDRESS(STREAM,X) print_operand_address (STREAM, X)
|
||
|
||
#define PRINT_OPERAND_PUNCT_VALID_P(CHAR) \
|
||
((CHAR) == '#' || (CHAR) == '*' || (CHAR) == '^' || (CHAR) == '!')
|
||
|
||
|
||
/* Define the information needed to generate branch insns. This is stored
|
||
from the compare operation. Note that we can't use "rtx" here since it
|
||
hasn't been defined! */
|
||
|
||
extern struct rtx_def *sh_compare_op0;
|
||
extern struct rtx_def *sh_compare_op1;
|
||
extern struct rtx_def *prepare_scc_operands();
|
||
|
||
|
||
|
||
/* Declare functions defined in sh.c and used in templates. */
|
||
|
||
extern char *output_branch();
|
||
extern char *output_shift();
|
||
extern char *output_movedouble();
|
||
extern char *output_movepcrel();
|
||
|
||
|
||
#define ADJUST_INSN_LENGTH(insn, length) \
|
||
adjust_insn_length (insn, insn_lengths)
|