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- /* Definitions for Motorola 680x0 running LynxOS.
- Copyright (C) 1993, 1994, 1995 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>
- #include <m68k/coff.h>
-
- #undef CTORS_SECTION_ASM_OP
- #undef DTORS_SECTION_ASM_OP
- #undef ASM_OUTPUT_DESTRUCTOR
- #undef SELECT_RTX_SECTION
-
- #define BSS_SECTION_ASM_OP ".bss"
-
- #define ASM_LONG ".long"
-
- #include <lynx.h>
-
- /* See m68k.h. 7 means 68020 with 68881. */
-
- #ifndef TARGET_DEFAULT
- #define TARGET_DEFAULT 7
- #endif
-
- /* Names to predefine in the preprocessor for this target machine. */
-
- #undef CPP_PREDEFINES
- #define CPP_PREDEFINES "-Dunix -Dmc68000 -DM68K -DLynx -DIBITS32 -Asystem(unix) -Asystem(lynx) -Acpu(m68k) -Amachine(m68k)"
-
- /* Every structure or union's size must be a multiple of 2 bytes. */
-
- #define STRUCTURE_SIZE_BOUNDARY 16
-
- /* Lynx uses d2 and d3 as scratch registers. */
- #undef CALL_USED_REGISTERS
- #define CALL_USED_REGISTERS \
- {1, 1, 1, 1, 0, 0, 0, 0, \
- 1, 1, 0, 0, 0, 0, 0, 1, \
- 1, 1, 0, 0, 0, 0, 0, 0 }
-
- /* Return floating point values in a fp register. This make fp code a
- little bit faster. It also makes -msoft-float code incompatible with
- -m68881 code, so people have to be careful not to mix the two. */
- #undef FUNCTION_VALUE
- #define FUNCTION_VALUE(VALTYPE,FUNC) LIBCALL_VALUE (TYPE_MODE (VALTYPE))
-
- #undef LIBCALL_VALUE
- #define LIBCALL_VALUE(MODE) \
- gen_rtx (REG, (MODE), \
- ((TARGET_68881 \
- && ((MODE) == SFmode || (MODE) == DFmode || (MODE) == XFmode)) \
- ? 16 : 0))
-
- #undef FUNCTION_VALUE_REGNO_P
- #define FUNCTION_VALUE_REGNO_P(N) ((N) == 0 || (TARGET_68881 && (N) == 16))
-
- #undef NEEDS_UNTYPED_CALL
- #define NEEDS_UNTYPED_CALL 1
-