| /* 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, 1996, 1998, 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. */ |
| |
| #include "m68k/m68k.h" |
| |
| /* See m68k.h. 7 means 68020 with 68881. */ |
| #ifndef TARGET_DEFAULT |
| #define TARGET_DEFAULT (MASK_BITFIELD|MASK_68881|MASK_68020) |
| #endif |
| |
| #if TARGET_DEFAULT & MASK_68881 |
| /* 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" : "") |
