122 lines
4.0 KiB
C
122 lines
4.0 KiB
C
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/* Configuration file for an m68k OpenBSD target.
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Copyright (C) 1999 Free Software Foundation, Inc.
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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, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* m68k is an old configuration that does not yet use the TARGET_CPU_DEFAULT
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framework. */
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#define TARGET_DEFAULT (MASK_BITFIELD | MASK_68881 | MASK_68020)
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#include <m68k/m68k.h>
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/* Get generic OpenBSD definitions. */
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#define OBSD_OLD_GAS
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#include <openbsd.h>
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/* Define __HAVE_68881__ in preprocessor, unless -msoft-float is specified.
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This will control the use of inline 68881 insns in certain macros. */
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#undef CPP_SPEC
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#define CPP_SPEC "%{!msoft-float:-D__HAVE_68881__ -D__HAVE_FPU__} %{posix:-D_POSIX_SOURCE} %{pthread:-D_POSIX_THREADS}"
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/* Run-time target specifications */
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#define CPP_PREDEFINES "-D__unix__ -D__m68k__ -D__mc68000__ -D__mc68020__ -D__OpenBSD__ -Asystem(unix) -Asystem(OpenBSD) -Acpu(m68k) -Amachine(m68k)"
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/* TODO: activate subtarget types when gas is updated.
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#define ASM_SPEC "%| %{m68030} %{m68040} %{m68060} %{fpic:-k} %{fPIC:-k -K}"
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*/
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/* Layout of source language data types. */
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/* This must agree with <machine/ansi.h> */
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#undef SIZE_TYPE
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#define SIZE_TYPE "unsigned int"
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#undef PTRDIFF_TYPE
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#define PTRDIFF_TYPE "int"
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#undef WCHAR_TYPE
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#define WCHAR_TYPE "int"
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#undef WCHAR_TYPE_SIZE
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#define WCHAR_TYPE_SIZE 32
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/* Storage layout. */
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/* Every structure or union's size must be a multiple of 2 bytes. */
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#define STRUCTURE_SIZE_BOUNDARY 16
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/* Specific options for DBX Output. */
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/* This is BSD, so it wants DBX format. */
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#define DBX_DEBUGGING_INFO
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/* Do not break .stabs pseudos into continuations. */
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#define DBX_CONTIN_LENGTH 0
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/* This is the char to use for continuation (in case we need to turn
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continuation back on). */
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#define DBX_CONTIN_CHAR '?'
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/* Stack & calling: aggregate returns. */
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/* Don't default to pcc-struct-return, because gcc is the only compiler, and
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we want to retain compatibility with older gcc versions. */
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#define DEFAULT_PCC_STRUCT_RETURN 0
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/* Assembler format: exception region output. */
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/* All configurations that don't use elf must be explicit about not using
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dwarf unwind information. egcs doesn't try too hard to check internal
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configuration files... */
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#define DWARF2_UNWIND_INFO 0
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/* TODO: ASM_OUTPUT_MI_THUNK is busted. I need to figure out
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what bra func@PLTPC means under linux, and find the corresponding
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construction for our gas/pic setup. */
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#if 0
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/* Taken from linux.h. Processor dependent optimized code to handle C++
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multiple inheritance vtable lookup. */
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/* Output code to add DELTA to the first argument, and then jump to FUNCTION.
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Used for C++ multiple inheritance. */
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#define ASM_OUTPUT_MI_THUNK(FILE, THUNK_FNDECL, DELTA, FUNCTION) \
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do { \
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if (DELTA > 0 && DELTA <= 8) \
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asm_fprintf (FILE, "\taddq.l %I%d,4(%Rsp)\n", DELTA); \
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else if (DELTA < 0 && DELTA >= -8) \
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asm_fprintf (FILE, "\tsubq.l %I%d,4(%Rsp)\n", -DELTA); \
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else \
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asm_fprintf (FILE, "\tadd.l %I%d,4(%Rsp)\n", DELTA); \
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\
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if (flag_pic) \
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{ \
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fprintf (FILE, "\tbra.l "); \
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assemble_name (FILE, XSTR (XEXP (DECL_RTL (FUNCTION), 0), 0)); \
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fprintf (FILE, "@PLTPC\n"); \
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} \
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else \
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{ \
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fprintf (FILE, "\tjmp "); \
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assemble_name (FILE, XSTR (XEXP (DECL_RTL (FUNCTION), 0), 0)); \
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fprintf (FILE, "\n"); \
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} \
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} while (0)
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#endif
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