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- /* Definitions of target machine for GNU compiler. ISI 68000/68020 version.
- Intended only for use with GAS, and not ISI's assembler, which is buggy
- Copyright (C) 1988 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, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- #include "m68k/m68k.h"
-
- /* See m68k.h. 7 means 68020 with 68881. */
- #ifndef TARGET_DEFAULT
- #define TARGET_DEFAULT 7
- #endif
-
- #if TARGET_DEFAULT & 2
- /* Define __HAVE_68881__ in preprocessor, unless -msoft-float is specified.
- This will control the use of inline 68881 insns in certain macros. */
-
- #define CPP_SPEC "%{!msoft-float:-D__HAVE_68881__}"
-
- /* If the 68881 is used, link must load libmc.a before libc.a. */
-
- #define LIB_SPEC "%{!msoft-float:%{!p:%{!pg:-lmc}}%{p:-lmc_p}%{pg:-lmc_p}} \
- %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p} %{g:-lg}"
-
- #else
- /* Define __HAVE_68881__ in preprocessor if -m68881 is specified.
- This will control the use of inline 68881 insns in certain macros. */
-
- #define CPP_SPEC "%{m68881:-D__HAVE_68881__}"
-
- /* If the 68881 is used, link must load libmc.a instead of libc.a */
-
- #define LIB_SPEC "%{m68881:%{!p:%{!pg:-lmc}}%{p:-lmc_p}%{pg:-lmc_p}} \
- %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p} %{g:-lg}"
- #endif
-
- /* Names to predefine in the preprocessor for this target machine. */
-
- #define CPP_PREDEFINES "-Dunix -Dmc68000 -Dis68k -Asystem(unix) -Asystem(bsd) -Acpu(m68k) -Amachine(m68k)"
-
- /* This is BSD, so it wants DBX format. */
-
- #define DBX_DEBUGGING_INFO
-
- /* Override parts of m68k.h to fit the ISI 68k machine. */
-
- #undef FUNCTION_VALUE
- #undef LIBCALL_VALUE
- #undef FUNCTION_VALUE_REGNO_P
- #undef NEEDS_UNTYPED_CALL
- #undef ASM_FILE_START
-
- /* Every structure or union's size must be a multiple of 2 bytes. */
-
- #define STRUCTURE_SIZE_BOUNDARY 16
-
- /* If TARGET_68881, return SF and DF values in f0 instead of d0. */
-
- #define FUNCTION_VALUE(VALTYPE,FUNC) LIBCALL_VALUE (TYPE_MODE (VALTYPE))
-
- #define LIBCALL_VALUE(MODE) \
- gen_rtx (REG, (MODE), ((TARGET_68881 && ((MODE) == SFmode || (MODE) == DFmode)) ? 16 : 0))
-
- /* 1 if N is a possible register number for a function value.
- D0 may be used, and F0 as well if -m68881 is specified. */
-
- #define FUNCTION_VALUE_REGNO_P(N) \
- ((N) == 0 || (TARGET_68881 && (N) == 16))
-
- /* Define this to be true when FUNCTION_VALUE_REGNO_P is true for
- more than one register. */
-
- #define NEEDS_UNTYPED_CALL 1
-
- /* Also output something to cause the correct _doprnt to be loaded. */
- #define ASM_FILE_START(FILE) fprintf (FILE, "#NO_APP\n%s\n", TARGET_68881 ? ".globl fltused" : "")
-