gcc/config/m68k/sun3.h

   1 /* Definitions of target machine for GNU compiler.  Sun 68000/68020 version.
   2    Copyright (C) 1987, 1988 Free Software Foundation, Inc.
   3
   4 This file is part of GNU CC.
   5
   6 GNU CC is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU CC is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU CC; see the file COPYING.  If not, write to
  18 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
  19
  20 /* This comment is here to see if it will keep Sun's cpp from dying.  */
  21
  22 /* If you do not need to generate floating point code for the optional
  23    Sun FPA board, you can safely comment out the SUPPORT_SUN_FPA define
  24    to gain a little speed and code size.  */
  25
  26 #define SUPPORT_SUN_FPA
  27
  28 #include "m68k.h"
  29
  30 /* See m68k.h.  7 means 68020 with 68881.  */
  31
  32 #ifndef TARGET_DEFAULT
  33 #define TARGET_DEFAULT 7
  34 #endif
  35
  36 /* Define __HAVE_FPA__ or __HAVE_68881__ in preprocessor,
  37    according to the -m flags.
  38    This will control the use of inline 68881 insns in certain macros.
  39    Also inform the program which CPU this is for.  */
  40
  41 #if TARGET_DEFAULT & 02
  42
  43 /* -m68881 is the default */
  44 #define CPP_SPEC \
  45 "%{!msoft-float:%{mfpa:-D__HAVE_FPA__ }%{!mfpa:-D__HAVE_68881__ }}\
  46 %{m68000:-D__mc68010__}%{mc68000:-D__mc68010__}%{!mc68000:%{!m68000:-D__mc68020__}} \
  47 %{!ansi:%{m68000:-Dmc68010}%{mc68000:-Dmc68010}%{!mc68000:%{!m68000:-Dmc68020}}}"
  48
  49 #else
  50
  51 /* -msoft-float is the default */
  52 #define CPP_SPEC \
  53 "%{m68881:-D__HAVE_68881__ }%{mfpa:-D__HAVE_FPA__ }\
  54 %{m68000:-D__mc68010__}%{mc68000:-D__mc68010__}%{!mc68000:%{!m68000:-D__mc68020__}} \
  55 %{!ansi:%{m68000:-Dmc68010}%{mc68000:-Dmc68010}%{!mc68000:%{!m68000:-Dmc68020}}}"
  56
  57 #endif
  58
  59 /* Prevent error on `-sun3' and `-target sun3' options.  */
  60
  61 #define CC1_SPEC "%{sun3:} %{target:}"
  62
  63 #define PTRDIFF_TYPE "int"
  64 #define SIZE_TYPE "int"
  65
  66 /* We must override m68k.h.  */
  67 #undef WCHAR_TYPE
  68 #undef WCHAR_TYPE_SIZE
  69 #define WCHAR_TYPE "short unsigned int"
  70 #define WCHAR_TYPE_SIZE 16
  71
  72 /* These compiler options take an argument.  We ignore -target for now.  */
  73
  74 #define WORD_SWITCH_TAKES_ARG(STR)                              \
  75  (!strcmp (STR, "Tdata") || !strcmp (STR, "include")            \
  76   || !strcmp (STR, "imacros") || !strcmp (STR, "target")        \
  77   || !strcmp (STR, "assert") || !strcmp (STR, "aux-info"))
  78
  79 /* -m68000 requires special flags to the assembler.  */
  80
  81 #define ASM_SPEC \
  82  "%{m68000:-mc68010}%{mc68000:-mc68010}%{!mc68000:%{!m68000:-mc68020}} \
  83   %{fpic:-k} %{fPIC:-k}"
  84
  85 /* Names to predefine in the preprocessor for this target machine.  */
  86
  87 #define CPP_PREDEFINES "-Dmc68000 -Dsun -Dunix"
  88
  89 /* STARTFILE_SPEC to include sun floating point initialization
  90    This is necessary (tr: Sun does it) for both the m68881 and the fpa
  91    routines.
  92    Note that includes knowledge of the default specs for gcc, ie. no
  93    args translates to the same effect as -m68881
  94    I'm not sure what would happen below if people gave contradictory
  95    arguments (eg. -msoft-float -mfpa) */
  96
  97 #if TARGET_DEFAULT & 0100
  98 /* -mfpa is the default */
  99 #define STARTFILE_SPEC                                  \
 100   "%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}   \
 101    %{m68881:Mcrt1.o%s}                                  \
 102    %{msoft-float:Fcrt1.o%s}                             \
 103    %{!m68881:%{!msoft-float:Wcrt1.o%s}}"
 104 #else
 105 #if TARGET_DEFAULT & 2
 106 /* -m68881 is the default */
 107 #define STARTFILE_SPEC                                  \
 108   "%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}   \
 109    %{mfpa:Wcrt1.o%s}                                    \
 110    %{msoft-float:Fcrt1.o%s}                             \
 111    %{!mfpa:%{!msoft-float:Mcrt1.o%s}}"
 112 #else
 113 /* -msoft-float is the default */
 114 #define STARTFILE_SPEC                                  \
 115   "%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}   \
 116    %{m68881:Mcrt1.o%s}                                  \
 117    %{mfpa:Wcrt1.o%s}                                    \
 118    %{!m68881:%{!mfpa:Fcrt1.o%s}}"
 119 #endif
 120 #endif
 121
 122 /* Specify library to handle `-a' basic block profiling.
 123    Control choice of libm.a (if user says -lm)
 124    based on fp arith default and options.  */
 125
 126 #if TARGET_DEFAULT & 0100
 127 /* -mfpa is the default */
 128 #define LIB_SPEC "%{g:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p} \
 129 %{a:/usr/lib/bb_link.o} %{g:-lg} \
 130 %{msoft-float:-L/usr/lib/fsoft}%{m68881:-L/usr/lib/f68881}\
 131 %{!msoft_float:%{!m68881:-L/usr/lib/ffpa}}"
 132 #else
 133 #if TARGET_DEFAULT & 2
 134 /* -m68881 is the default */
 135 #define LIB_SPEC "%{g:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p} \
 136 %{a:/usr/lib/bb_link.o} %{g:-lg} \
 137 %{msoft-float:-L/usr/lib/fsoft}%{!msoft-float:%{!mfpa:-L/usr/lib/f68881}}\
 138 %{mfpa:-L/usr/lib/ffpa}"
 139 #else
 140 /* -msoft-float is the default */
 141 #define LIB_SPEC "%{g:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p} \
 142 %{a:/usr/lib/bb_link.o} %{g:-lg} \
 143 %{!m68881:%{!mfpa:-L/usr/lib/fsoft}}%{m68881:-L/usr/lib/f68881}\
 144 %{mfpa:-L/usr/lib/ffpa}"
 145 #endif
 146 #endif
 147
 148 /* Provide required defaults for linker -e and -d switches.  */
 149
 150 #define LINK_SPEC \
 151  "%{nostdlib:%{!e*:-e start}} -dc -dp %{static:-Bstatic} %{assert*}"
 152
 153 /* Every structure or union's size must be a multiple of 2 bytes.  */
 154
 155 #define STRUCTURE_SIZE_BOUNDARY 16
 156
 157 /* This is BSD, so it wants DBX format.  */
 158
 159 #define DBX_DEBUGGING_INFO
 160
 161 /* Allow folding division by zero.  */
 162 #define REAL_INFINITY
 163
 164 /* Generate calls to memcpy, memcmp and memset.  */
 165 #define TARGET_MEM_FUNCTIONS
 166
 167 /* This is how to output an assembler line defining a `double' constant.  */
 168
 169 #undef ASM_OUTPUT_DOUBLE
 170 #define ASM_OUTPUT_DOUBLE(FILE,VALUE)                                   \
 171   {                                                                     \
 172     if (REAL_VALUE_ISINF (VALUE))                                       \
 173       fprintf (FILE, "\t.double 0r%s99e999\n", (VALUE) > 0 ? "" : "-"); \
 174     else if (REAL_VALUE_ISNAN (VALUE))                                  \
 175       {                                                                 \
 176         union { double d; long l[2];} t;                                \
 177         t.d = (VALUE);                                                  \
 178         fprintf (FILE, "\t.long 0x%lx\n\t.long 0x%lx\n", t.l[0], t.l[1]); \
 179       }                                                                 \
 180     else                                                                \
 181       fprintf (FILE, "\t.double 0r%.17g\n", VALUE);                     \
 182   }
 183
 184 /* This is how to output an assembler line defining a `float' constant.  */
 185
 186 #undef ASM_OUTPUT_FLOAT
 187 #define ASM_OUTPUT_FLOAT(FILE,VALUE)                                    \
 188   {                                                                     \
 189     if (REAL_VALUE_ISINF (VALUE))                                       \
 190       fprintf (FILE, "\t.single 0r%s99e999\n", (VALUE) > 0 ? "" : "-"); \
 191     else if (REAL_VALUE_ISNAN (VALUE))                                  \
 192       {                                                                 \
 193         union { float f; long l;} t;                                    \
 194         t.f = (VALUE);                                                  \
 195         fprintf (FILE, "\t.long 0x%lx\n", t.l);                         \
 196       }                                                                 \
 197     else                                                                \
 198       fprintf (FILE, "\t.single 0r%.9g\n", VALUE);                      \
 199   }
 200
 201 /* This is how to output an assembler lines defining floating operands.
 202    There's no way to output a NaN's fraction, so we lose it.  */
 203
 204 #undef ASM_OUTPUT_FLOAT_OPERAND
 205 #define ASM_OUTPUT_FLOAT_OPERAND(FILE,VALUE)                            \
 206   (REAL_VALUE_ISINF ((VALUE))                                           \
 207    ? (asm_fprintf (FILE, "%I0r%s99e999", ((VALUE) > 0 ? "" : "-")), 0)  \
 208    : (VALUE) == -0.0                                                    \
 209    ? (asm_fprintf (FILE, "%I0r-0.0"), 0)                                \
 210    : (asm_fprintf (FILE, "%I0r%.9g", (VALUE)), 0))
 211
 212 #undef ASM_OUTPUT_DOUBLE_OPERAND
 213 #define ASM_OUTPUT_DOUBLE_OPERAND(FILE,VALUE)                           \
 214   (REAL_VALUE_ISINF ((VALUE))                                           \
 215    ? (asm_fprintf (FILE, "%I0r%s99e999", ((VALUE) > 0 ? "" : "-")), 0)  \
 216    : (VALUE) == -0.0                                                    \
 217    ? (asm_fprintf (FILE, "%I0r-0.0"), 0)                                \
 218    : (asm_fprintf (FILE, "%I0r%.17g", (VALUE)), 0))