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- /* Definitions of target machine for GNU compiler.
-
- Citicorp/TTI Unicom PBB version
- (using GAS and encapsulated COFF)
-
- Copyright (C) 1987, 1988, 1990 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.h"
-
- /* Without STRUCTURE_SIZE_BOUNDARY, we can't ensure that structures are
- aligned such that we can correctly extract bitfields from them.
- Someone should check whether the usual compiler on this machine
- provides the equivalent behavior of STRUCTURE_SIZE_BOUNDARY. */
- /* Alternative solutions are (1) define PCC_BITFIELD_TYPE_MATTERS,
- if that fits what the usual compiler does,
- or disable the -m68000 and -mnobitfield options. */
- #error This doesn't define STRUCTURE_SIZE_BOUNDARY
-
- /* See m68k.h. 5 means 68020 without 68881. */
-
- #define TARGET_DEFAULT 5
-
- /* 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__}"
-
- /* Since some host machines will have to avoid generating code that
- knows the format of floating point numbers on the tti68K,
- we force all of them to avoid it when compiling for this
- target, so that they will all generate exactly the same assembler
- code as a result. Otherwise code cross-hosted from a Vax would
- differ from native-compiled code. The performance penalty should
- be minor in most cases. Note that we still do constant folding
- in the host float format, so things might be a few bits off here
- or there. */
-
- #define CAN_EXAMINE_68K_REAL_GUTS 0
-
- /* Names to predefine in the preprocessor for this target machine. */
-
- #define CPP_PREDEFINES "-Dm68k -Dunix -DUnicomPBB -Dmc68k -Dmc68020 -Dmc68k32"
-
- /* We want DBX format for use with gdb under encapsulated coff. */
-
- #define DBX_DEBUGGING_INFO
-
- /* Generate calls to memcpy, memcmp and memset. */
-
- #define TARGET_MEM_FUNCTIONS
-
- /* -m68000 requires special flags to the assembler. */
-
- #define ASM_SPEC \
- "%{m68000:-mc68010}%{mc68000:-mc68010}"
-
- /* we use /lib/libp/lib* when profiling */
-
- #define LIB_SPEC "%{!shlib:%{p:-L/lib/libp} %{pg:-L/lib/libp} -lc}"
-
- /* shared libraries need to use crt1.o */
-
- /*#define STARTFILE_SPEC*/
- #define STARTFILE_SPEC \
- "%{!shlib:%{pg:mcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}}\
- %{shlib:crt1.o%s shlib.ifile%s} "
-
- /* cpp has to support a #sccs directive for the /usr/include files */
-
- #define SCCS_DIRECTIVE
-
- /* Define subroutines to call to handle multiply, divide, and remainder.
- Use the subroutines that the 3b1's library provides.
- The `*' prevents an underscore from being prepended by the compiler. */
-
- #ifdef notnow
- #define DIVSI3_LIBCALL "*ldiv"
- #define UDIVSI3_LIBCALL "*uldiv"
- #define MODSI3_LIBCALL "*lrem"
- #define UMODSI3_LIBCALL "*ulrem"
- #define MULSI3_LIBCALL "*lmul"
- #define UMULSI3_LIBCALL "*ulmul"
- #endif
-
- #ifndef __GNUC__
- #define USE_C_ALLOCA
- #endif
-
- /* Return pointer values in both d0 and a0. */
-
- #undef FUNCTION_EXTRA_EPILOGUE
- #define FUNCTION_EXTRA_EPILOGUE(FILE, SIZE) \
- { \
- extern int current_function_returns_pointer; \
- if ((current_function_returns_pointer) && \
- ! find_equiv_reg (0, get_last_insn (), 0, 0, 0, 8, Pmode))\
- fprintf (FILE, "\tmovel d0,a0\n"); \
- }
-