Return to tti68k.h CVS log

Up to [GCC 2.x] / gcc / config

Annotation of gcc/config/tti68k.h, revision 1.1.1.1

1.1       root        1: /* Definitions of target machine for GNU compiler.
                      2: 
                      3:    Citicorp/TTI Unicom PBB version
                      4:    (using GAS and encapsulated COFF)
                      5: 
                      6:    Copyright (C) 1987, 1988, 1990 Free Software Foundation, Inc.
                      7: 
                      8: This file is part of GNU CC.
                      9: 
                     10: GNU CC is free software; you can redistribute it and/or modify
                     11: it under the terms of the GNU General Public License as published by
                     12: the Free Software Foundation; either version 2, or (at your option)
                     13: any later version.
                     14: 
                     15: GNU CC is distributed in the hope that it will be useful,
                     16: but WITHOUT ANY WARRANTY; without even the implied warranty of
                     17: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     18: GNU General Public License for more details.
                     19: 
                     20: You should have received a copy of the GNU General Public License
                     21: along with GNU CC; see the file COPYING.  If not, write to
                     22: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
                     23: 
                     24: #include "m68k.h"
                     25: 
                     26: /* Without STRUCTURE_SIZE_BOUNDARY, we can't ensure that structures are
                     27:    aligned such that we can correctly extract bitfields from them.
                     28:    Someone should check whether the usual compiler on this machine
                     29:    provides the equivalent behavior of STRUCTURE_SIZE_BOUNDARY.  */
                     30: /* Alternative solutions are (1) define PCC_BITFIELD_TYPE_MATTERS,
                     31:    if that fits what the usual compiler does,
                     32:    or disable the -m68000 and -mnobitfield options.  */
                     33: #error This doesn't define STRUCTURE_SIZE_BOUNDARY
                     34: 
                     35: /* See m68k.h.  5 means 68020 without 68881.  */
                     36: 
                     37: #define TARGET_DEFAULT 5
                     38: 
                     39: /* Define __HAVE_68881__ in preprocessor if -m68881 is specified.
                     40:    This will control the use of inline 68881 insns in certain macros.  */
                     41: 
                     42: #define CPP_SPEC "%{m68881:-D__HAVE_68881__}"
                     43: 
                     44: /* Since some host machines will have to avoid generating code that
                     45:    knows the format of floating point numbers on the tti68K,
                     46:    we force all of them to avoid it when compiling for this
                     47:    target, so that they will all generate exactly the same assembler
                     48:    code as a result.  Otherwise code cross-hosted from a Vax would
                     49:    differ from native-compiled code.  The performance penalty should
                     50:    be minor in most cases.  Note that we still do constant folding
                     51:    in the host float format, so things might be a few bits off here
                     52:    or there.  */
                     53: 
                     54: #define        CAN_EXAMINE_68K_REAL_GUTS       0
                     55: 
                     56: /* Names to predefine in the preprocessor for this target machine.  */
                     57: 
                     58: #define CPP_PREDEFINES "-Dm68k -Dunix -DUnicomPBB -Dmc68k -Dmc68020 -Dmc68k32"
                     59: 
                     60: /* We want DBX format for use with gdb under encapsulated coff.  */
                     61: 
                     62: #define DBX_DEBUGGING_INFO
                     63: 
                     64: /* Generate calls to memcpy, memcmp and memset.  */
                     65: 
                     66: #define TARGET_MEM_FUNCTIONS
                     67: 
                     68: /* -m68000 requires special flags to the assembler.  */
                     69: 
                     70: #define ASM_SPEC \
                     71:  "%{m68000:-mc68010}%{mc68000:-mc68010}"
                     72: 
                     73: /* we use /lib/libp/lib*  when profiling */
                     74: 
                     75: #define LIB_SPEC "%{!shlib:%{p:-L/lib/libp} %{pg:-L/lib/libp} -lc}"
                     76: 
                     77: /* shared libraries need to use crt1.o  */
                     78: 
                     79: /*#define STARTFILE_SPEC*/
                     80: #define STARTFILE_SPEC \
                     81:   "%{!shlib:%{pg:mcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}}\
                     82:    %{shlib:crt1.o%s shlib.ifile%s} "
                     83: 
                     84: /* cpp has to support a #sccs directive for the /usr/include files */
                     85: 
                     86: #define SCCS_DIRECTIVE
                     87: 
                     88: /* Define subroutines to call to handle multiply, divide, and remainder.
                     89:    Use the subroutines that the 3b1's library provides.
                     90:    The `*' prevents an underscore from being prepended by the compiler.  */
                     91: 
                     92: #ifdef notnow
                     93: #define DIVSI3_LIBCALL "*ldiv"
                     94: #define UDIVSI3_LIBCALL "*uldiv"
                     95: #define MODSI3_LIBCALL "*lrem"
                     96: #define UMODSI3_LIBCALL "*ulrem"
                     97: #define MULSI3_LIBCALL "*lmul"
                     98: #define UMULSI3_LIBCALL "*ulmul"
                     99: #endif
                    100: 
                    101: #ifndef __GNUC__
                    102: #define USE_C_ALLOCA
                    103: #endif
                    104: 
                    105: /* Return pointer values in both d0 and a0.  */
                    106: 
                    107: #undef FUNCTION_EXTRA_EPILOGUE
                    108: #define FUNCTION_EXTRA_EPILOGUE(FILE, SIZE)                    \
                    109: {                                                              \
                    110:   extern int current_function_returns_pointer;                 \
                    111:   if ((current_function_returns_pointer) &&                    \
                    112:       ! find_equiv_reg (0, get_last_insn (), 0, 0, 0, 8, Pmode))\
                    113:     fprintf (FILE, "\tmovel d0,a0\n");                         \
                    114: }

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.