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Diffstat (limited to 'gcc/config/m68k/m68kv4.h')
| -rw-r--r-- | gcc/config/m68k/m68kv4.h | 346 |
1 files changed, 0 insertions, 346 deletions
diff --git a/gcc/config/m68k/m68kv4.h b/gcc/config/m68k/m68kv4.h deleted file mode 100644 index a40d919990d..00000000000 --- a/gcc/config/m68k/m68kv4.h +++ /dev/null @@ -1,346 +0,0 @@ -/* Target definitions for GNU compiler for mc680x0 running System V.4 - Copyright (C) 1991, 1993, 1994, 1995, 1996 Free Software Foundation, Inc. - Contributed by Ron Guilmette (rfg@monkeys.com) and - Fred Fish (fnf@cygnus.com). - -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. */ - -/* Use SGS_* macros to control compilation in m68k.md */ - -#define SGS_SWITCH_TABLES /* Different switch table handling */ - -#include "m68k/sgs.h" /* The m68k/SVR4 assembler is SGS based */ - -/* The SGS assembler requires a special definition of - ASM_IDENTIFY_GCC. We combine the m68k/sgs.h and the svr4.h - definitions below. */ -#undef ASM_IDENTIFY_GCC - -#include "svr4.h" /* Pick up the generic SVR4 macros */ - -/* See m68k.h. 7 means 68020 with 68881. */ - -#ifndef TARGET_DEFAULT -#define TARGET_DEFAULT (MASK_BITFIELD|MASK_68881|MASK_68020) -#endif - -/* When using an SGS assembler, modify the name of the artificial label which - identifies this file as having been compiled with gcc, and the macro that - emits such a label in the assembly output, to use '%' rather than '.' */ - -#undef ASM_IDENTIFY_GCC -#define ASM_IDENTIFY_GCC(FILE) \ -do \ - { \ - if (write_symbols != DBX_DEBUG) \ - fputs ("gcc2_compiled%:\n", FILE); \ - } \ -while (0) - -/* Override the definition of NO_DOLLAR_IN_LABEL in svr4.h, for special - g++ assembler names. When this is defined, g++ uses embedded '.' - characters and some m68k assemblers have problems with this. The - chances are much greater that any particular assembler will permit - embedded '$' characters. */ - -#undef NO_DOLLAR_IN_LABEL - -/* Define PCC_STATIC_STRUCT_RETURN if the convention on the target machine - is to use the nonreentrant technique for returning structure and union - values, as commonly implemented by the AT&T Portable C Compiler (PCC). - When defined, the gcc option -fpcc-struct-return can be used to cause - this form to be generated. When undefined, the option does nothing. - For m68k SVR4, the convention is to use a reentrant technique compatible - with the gcc default, so override the definition of this macro in m68k.h */ - -#undef PCC_STATIC_STRUCT_RETURN - -/* Provide a set of pre-definitions and pre-assertions appropriate for - the m68k running svr4. __svr4__ is our extension. */ - -#define CPP_PREDEFINES \ - "-Dm68k -Dunix -D__svr4__ -D__motorola__ \ - -Asystem(unix) -Asystem(svr4) -Acpu(m68k) -Amachine(m68k)" - -/* Test to see if the target includes a 68881 by default, and use CPP_SPEC - to control whether or not __HAVE_68881__ is defined by default or not. - If a 68881 is the default, gcc will use inline 68881 instructions, by - predefining __HAVE_68881__, unless -msoft-float is specified. - If a 68881 is not the default, gcc will only define __HAVE_68881__ if - -m68881 is specified. */ - -#if TARGET_DEFAULT & MASK_68881 -#define CPP_SPEC "%{!msoft-float:-D__HAVE_68881__}" -#else -#define CPP_SPEC "%{m68881:-D__HAVE_68881__}" -#endif - -/* Output assembler code to FILE to increment profiler label # LABELNO - for profiling a function entry. We override the definition in m68k.h - and match the way the native m68k/SVR4 compiler does profiling, with the - address of the profile counter in a1, not a0, and using bsr rather - than jsr. */ - -#undef FUNCTION_PROFILER -#define FUNCTION_PROFILER(FILE, LABELNO) \ - asm_fprintf ((FILE), "\tlea.l\t(%LLP%d,%Rpc),%Ra1\n\tbsr\t_mcount\n", \ - (LABELNO)) - -/* Local common symbols are declared to the assembler with ".lcomm" rather - than ".bss", so override the definition in svr4.h */ -/* ??? svr4.h no longer defines this, and this is only used by m68k/amix.h. */ - -#undef BSS_ASM_OP -#define BSS_ASM_OP ".lcomm" - -/* Register in which address to store a structure value is passed to a - function. The default in m68k.h is a1. For m68k/SVR4 it is a0. */ - -#undef STRUCT_VALUE_REGNUM -#define STRUCT_VALUE_REGNUM 8 - -/* Register in which static-chain is passed to a function. The - default in m68k.h is a0, but that is already the struct value - regnum. Make it a1 instead. */ - -#undef STATIC_CHAIN_REGNUM -#define STATIC_CHAIN_REGNUM 9 - -#define ASM_COMMENT_START "#" - -#undef TYPE_OPERAND_FMT -#define TYPE_OPERAND_FMT "@%s" - -/* Define how the m68k registers should be numbered for Dwarf output. - The numbering provided here should be compatible with the native - SVR4 SDB debugger in the m68k/SVR4 reference port, where d0-d7 - are 0-7, a0-a8 are 8-15, and fp0-fp7 are 16-23. */ - -#define DBX_REGISTER_NUMBER(REGNO) (REGNO) - -/* The ASM_OUTPUT_SKIP macro is first defined in m68k.h, using ".skip". - It is then overridden by m68k/sgs.h to use ".space", and again by svr4.h - to use ".zero". The m68k/SVR4 assembler uses ".space", so repeat the - definition from m68k/sgs.h here. Note that ASM_NO_SKIP_IN_TEXT is - defined in m68k/sgs.h, so we don't have to repeat it here. */ - -#undef ASM_OUTPUT_SKIP -#define ASM_OUTPUT_SKIP(FILE,SIZE) \ - fprintf (FILE, "\t%s %u\n", SPACE_ASM_OP, (SIZE)) - -/* 1 if N is a possible register number for a function value. - For m68k/SVR4 allow d0, a0, or fp0 as return registers, for integral, - pointer, or floating types, respectively. Reject fp0 if not using a - 68881 coprocessor. */ - -#undef FUNCTION_VALUE_REGNO_P -#define FUNCTION_VALUE_REGNO_P(N) \ - ((N) == 0 || (N) == 8 || (TARGET_68881 && (N) == 16)) - -/* Define this to be true when FUNCTION_VALUE_REGNO_P is true for - more than one register. */ - -#undef NEEDS_UNTYPED_CALL -#define NEEDS_UNTYPED_CALL 1 - -/* Define how to generate (in the callee) the output value of a function - and how to find (in the caller) 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. - For m68k/SVR4 generate the result in d0, a0, or fp0 as appropriate. */ - -#undef FUNCTION_VALUE -#define FUNCTION_VALUE(VALTYPE, FUNC) \ - (TREE_CODE (VALTYPE) == REAL_TYPE && TARGET_68881 \ - ? gen_rtx (REG, TYPE_MODE (VALTYPE), 16) \ - : (POINTER_TYPE_P (VALTYPE) \ - ? gen_rtx (REG, TYPE_MODE (VALTYPE), 8) \ - : gen_rtx (REG, TYPE_MODE (VALTYPE), 0))) - -/* For compatibility with the large body of existing code which does not - always properly declare external functions returning pointer types, the - m68k/SVR4 convention is to copy the value returned for pointer functions - from a0 to d0 in the function epilogue, so that callers that have - neglected to properly declare the callee can still find the correct return - value. */ - -extern int current_function_returns_pointer; -#define FUNCTION_EXTRA_EPILOGUE(FILE, SIZE) \ -do { \ - if ((current_function_returns_pointer) && \ - ! find_equiv_reg (0, get_last_insn (), 0, 0, 0, 8, Pmode)) \ - asm_fprintf (FILE, "\tmov.l %Ra0,%Rd0\n"); \ -} while (0); - -/* Define how to find the value returned by a library function assuming the - value has mode MODE. - For m68k/SVR4 look for integer values in d0, pointer values in d0 - (returned in both d0 and a0), and floating values in fp0. */ - -#undef LIBCALL_VALUE -#define LIBCALL_VALUE(MODE) \ - ((((MODE) == SFmode || (MODE) == DFmode || (MODE) == XFmode) \ - && TARGET_68881) \ - ? gen_rtx (REG, (MODE), 16) \ - : gen_rtx (REG, (MODE), 0)) - -/* Boundary (in *bits*) on which stack pointer should be aligned. - The m68k/SVR4 convention is to keep the stack pointer longword aligned. */ - -#undef STACK_BOUNDARY -#define STACK_BOUNDARY 32 - -/* Alignment of field after `int : 0' in a structure. - For m68k/SVR4, this is the next longword boundary. */ - -#undef EMPTY_FIELD_BOUNDARY -#define EMPTY_FIELD_BOUNDARY 32 - -/* No data type wants to be aligned rounder than this. - For m68k/SVR4, some types (doubles for example) are aligned on 8 byte - boundaries */ - -#undef BIGGEST_ALIGNMENT -#define BIGGEST_ALIGNMENT 64 - -/* SVR4 m68k assembler is bitching on the `comm i,1,1' which asks for - 1 byte alignment. Don't generate alignment for COMMON seems to be - safer until we the assembler is fixed. */ -#undef ASM_OUTPUT_ALIGNED_COMMON -/* Same problem with this one. */ -#undef ASM_OUTPUT_ALIGNED_LOCAL - -/* The `string' directive on m68k svr4 does not handle string with - escape char (ie., `\') right. Use normal way to output ASCII bytes - seems to be safer. */ -#undef ASM_OUTPUT_ASCII -#define ASM_OUTPUT_ASCII(FILE,PTR,LEN) \ -do { \ - register int sp = 0, lp = 0, ch; \ - fprintf ((FILE), "\t%s ", BYTE_ASM_OP); \ - do { \ - ch = (PTR)[sp]; \ - if (ch > ' ' && ! (ch & 0x80) && ch != '\\') \ - { \ - fprintf ((FILE), "'%c", ch); \ - } \ - else \ - { \ - fprintf ((FILE), "0x%x", ch); \ - } \ - if (++sp < (LEN)) \ - { \ - if ((sp % 10) == 0) \ - { \ - fprintf ((FILE), "\n\t%s ", BYTE_ASM_OP); \ - } \ - else \ - { \ - putc (',', (FILE)); \ - } \ - } \ - } while (sp < (LEN)); \ - putc ('\n', (FILE)); \ -} while (0) - -/* SVR4 m68k assembler is bitching on the syntax `2.b'. - So use the "LLDnnn-LLnnn" format. Define LLDnnn after the table. */ - -#undef ASM_OUTPUT_CASE_END -#define ASM_OUTPUT_CASE_END(FILE,NUM,TABLE) \ -do { \ - if (switch_table_difference_label_flag) \ - asm_fprintf ((FILE), "\t%s %LLD%d,%LL%d\n", SET_ASM_OP, (NUM), (NUM));\ - switch_table_difference_label_flag = 0; \ -} while (0) - -int switch_table_difference_label_flag; - -#undef ASM_OUTPUT_COMMON -#undef ASM_OUTPUT_LOCAL -#define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED) \ -( fputs (".comm ", (FILE)), \ - assemble_name ((FILE), (NAME)), \ - fprintf ((FILE), ",%u\n", (SIZE))) - -#define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED) \ -( fputs (".lcomm ", (FILE)), \ - assemble_name ((FILE), (NAME)), \ - fprintf ((FILE), ",%u\n", (SIZE))) - -/* Override the definition in svr4.h. In m68k svr4, using swbeg is the - standard way to do switch table. */ -#undef ASM_OUTPUT_BEFORE_CASE_LABEL -#define ASM_OUTPUT_BEFORE_CASE_LABEL(FILE,PREFIX,NUM,TABLE) \ - fprintf ((FILE), "\t%s &%d\n", SWBEG_ASM_OP, XVECLEN (PATTERN (TABLE), 1)); - -/* In m68k svr4, a symbol_ref rtx can be a valid PIC operand if it is an - operand of a function call. */ -#undef LEGITIMATE_PIC_OPERAND_P -#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))) - -/* Turn off function cse if we are doing PIC. We always want function call - to be done as `bsr foo@PLTPC', so it will force the assembler to create - the PLT entry for `foo'. Doing function cse will cause the address of `foo' - to be loaded into a register, which is exactly what we want to avoid when - we are doing PIC on svr4 m68k. */ -#undef OVERRIDE_OPTIONS -#define OVERRIDE_OPTIONS \ -{ \ - if (flag_pic) flag_no_function_cse = 1; \ - if (! TARGET_68020 && flag_pic == 2) \ - error("-fPIC is not currently supported on the 68000 or 68010\n"); \ -} - -/* Output assembler code for a block containing the constant parts - of a trampoline, leaving space for the variable parts. */ - -/* On m68k svr4, the trampoline is different from the generic version - in that we use a1 as the static call chain. */ - -#undef TRAMPOLINE_TEMPLATE -#define TRAMPOLINE_TEMPLATE(FILE) \ -{ \ - ASM_OUTPUT_SHORT (FILE, gen_rtx (CONST_INT, VOIDmode, 0x227a)); \ - ASM_OUTPUT_SHORT (FILE, gen_rtx (CONST_INT, VOIDmode, 8)); \ - ASM_OUTPUT_SHORT (FILE, gen_rtx (CONST_INT, VOIDmode, 0x2f3a)); \ - ASM_OUTPUT_SHORT (FILE, gen_rtx (CONST_INT, VOIDmode, 8)); \ - ASM_OUTPUT_SHORT (FILE, gen_rtx (CONST_INT, VOIDmode, 0x4e75)); \ - ASM_OUTPUT_INT (FILE, const0_rtx); \ - ASM_OUTPUT_INT (FILE, const0_rtx); \ -} - -/* Redefine since we are using a different trampoline */ -#undef TRAMPOLINE_SIZE -#define TRAMPOLINE_SIZE 18 - -/* 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. */ - -#undef INITIALIZE_TRAMPOLINE -#define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT) \ -{ \ - emit_move_insn (gen_rtx (MEM, SImode, plus_constant (TRAMP, 10)), CXT); \ - emit_move_insn (gen_rtx (MEM, SImode, plus_constant (TRAMP, 14)), FNADDR); \ -} |