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Annotation of gcc/config/sun3.h, revision 1.1

1.1     ! root        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: %{!ansi:%{m68000:-Dmc68010}%{mc68000:-Dmc68010}%{!mc68000:%{!m68000:-Dmc68020}}}"
        !            47: 
        !            48: #else
        !            49: #if TARGET_DEFAULT & 0100
        !            50: 
        !            51: /* -mfpa is the default */
        !            52: #define CPP_SPEC \
        !            53: "%{!msoft-float:%{m68881:-D__HAVE_68881__ }%{!m68881:-D__HAVE_FPA__ }}\
        !            54: %{!ansi:%{m68000:-Dmc68010}%{mc68000:-Dmc68010}%{!mc68000:%{!m68000:-Dmc68020}}}"
        !            55: 
        !            56: #else
        !            57: 
        !            58: /* -msoft-float is the default */
        !            59: #define CPP_SPEC \
        !            60: "%{m68881:-D__HAVE_68881__ }%{mfpa:-D__HAVE_FPA__ }\
        !            61: %{!ansi:%{m68000:-Dmc68010}%{mc68000:-Dmc68010}%{!mc68000:%{!m68000:-Dmc68020}}}"
        !            62: 
        !            63: #endif
        !            64: #endif
        !            65: 
        !            66: /* Prevent error on `-sun3' and `-target sun3' options.  */
        !            67: 
        !            68: #define CC1_SPEC "%{sun3:} %{target:}"
        !            69: 
        !            70: #define PTRDIFF_TYPE "int"
        !            71: #define SIZE_TYPE "int"
        !            72: 
        !            73: /* We must override m68k.h.  */
        !            74: #undef WCHAR_TYPE
        !            75: #undef WCHAR_TYPE_SIZE
        !            76: #define WCHAR_TYPE "short unsigned int"
        !            77: #define WCHAR_TYPE_SIZE 16
        !            78: 
        !            79: /* These compiler options take an argument.  We ignore -target for now.  */
        !            80: 
        !            81: #define WORD_SWITCH_TAKES_ARG(STR)                             \
        !            82:  (!strcmp (STR, "Tdata") || !strcmp (STR, "include")           \
        !            83:   || !strcmp (STR, "imacros") || !strcmp (STR, "target")       \
        !            84:   || !strcmp (STR, "assert"))
        !            85: 
        !            86: /* -m68000 requires special flags to the assembler.  */
        !            87: 
        !            88: #define ASM_SPEC \
        !            89:  "%{m68000:-mc68010}%{mc68000:-mc68010}%{!mc68000:%{!m68000:-mc68020}} \
        !            90:   %{fpic:-k} %{fPIC:-k}"
        !            91: 
        !            92: /* Names to predefine in the preprocessor for this target machine.  */
        !            93: 
        !            94: #define CPP_PREDEFINES "-Dmc68000 -Dsun -Dunix"
        !            95: 
        !            96: /* STARTFILE_SPEC to include sun floating point initialization
        !            97:    This is necessary (tr: Sun does it) for both the m68881 and the fpa
        !            98:    routines.
        !            99:    Note that includes knowledge of the default specs for gcc, ie. no
        !           100:    args translates to the same effect as -m68881
        !           101:    I'm not sure what would happen below if people gave contradictory
        !           102:    arguments (eg. -msoft-float -mfpa) */
        !           103: 
        !           104: #if TARGET_DEFAULT & 0100
        !           105: /* -mfpa is the default */
        !           106: #define STARTFILE_SPEC                                 \
        !           107:   "%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}  \
        !           108:    %{m68881:Mcrt1.o%s}                                 \
        !           109:    %{msoft-float:Fcrt1.o%s}                            \
        !           110:    %{!m68881:%{!msoft-float:Wcrt1.o%s}}"
        !           111: #else
        !           112: #if TARGET_DEFAULT & 2
        !           113: /* -m68881 is the default */
        !           114: #define STARTFILE_SPEC                                 \
        !           115:   "%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}  \
        !           116:    %{mfpa:Wcrt1.o%s}                                   \
        !           117:    %{msoft-float:Fcrt1.o%s}                            \
        !           118:    %{!mfpa:%{!msoft-float:Mcrt1.o%s}}"
        !           119: #else
        !           120: /* -msoft-float is the default */
        !           121: #define STARTFILE_SPEC                                 \
        !           122:   "%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}  \
        !           123:    %{m68881:Mcrt1.o%s}                                 \
        !           124:    %{mfpa:Wcrt1.o%s}                                   \
        !           125:    %{!m68881:%{!mfpa:Fcrt1.o%s}}"
        !           126: #endif
        !           127: #endif
        !           128: 
        !           129: /* Specify library to handle `-a' basic block profiling.
        !           130:    Control choice of libm.a (if user says -lm)
        !           131:    based on fp arith default and options.  */
        !           132: 
        !           133: #if TARGET_DEFAULT & 0100
        !           134: /* -mfpa 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}%{m68881:-L/usr/lib/f68881}\
        !           138: %{!msoft_float:%{!m68881:-L/usr/lib/ffpa}}"
        !           139: #else
        !           140: #if TARGET_DEFAULT & 2
        !           141: /* -m68881 is the default */
        !           142: #define LIB_SPEC "%{g:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p} \
        !           143: %{a:/usr/lib/bb_link.o} %{g:-lg} \
        !           144: %{msoft-float:-L/usr/lib/fsoft}%{!msoft-float:%{!mfpa:-L/usr/lib/f68881}}\
        !           145: %{mfpa:-L/usr/lib/ffpa}"
        !           146: #else
        !           147: /* -msoft-float is the default */
        !           148: #define LIB_SPEC "%{g:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p} \
        !           149: %{a:/usr/lib/bb_link.o} %{g:-lg} \
        !           150: %{!m68881:%{!mfpa:-L/usr/lib/fsoft}}%{m68881:-L/usr/lib/f68881}\
        !           151: %{mfpa:-L/usr/lib/ffpa}"
        !           152: #endif
        !           153: #endif
        !           154: 
        !           155: /* Provide required defaults for linker -e and -d switches.
        !           156:    Also, it is hard to debug with shared libraries,
        !           157:    so don't use them if going to debug.  */
        !           158: 
        !           159: #define LINK_SPEC "%{!e*:-e start} -dc -dp %{g:-Bstatic} %{static:-Bstatic} \
        !           160:   %{assert*}"
        !           161: 
        !           162: /* Every structure or union's size must be a multiple of 2 bytes.  */
        !           163: 
        !           164: #define STRUCTURE_SIZE_BOUNDARY 16
        !           165: 
        !           166: /* This is BSD, so it wants DBX format.  */
        !           167: 
        !           168: #define DBX_DEBUGGING_INFO
        !           169: 
        !           170: /* Allow folding division by zero.  */
        !           171: #define REAL_INFINITY
        !           172: 
        !           173: /* This is how to output an assembler line defining a `double' constant.  */
        !           174: 
        !           175: #undef ASM_OUTPUT_DOUBLE
        !           176: #define ASM_OUTPUT_DOUBLE(FILE,VALUE)                                  \
        !           177:   {                                                                    \
        !           178:     if (REAL_VALUE_ISINF (VALUE))                                      \
        !           179:       fprintf (FILE, "\t.double 0r%s99e999\n", (VALUE) > 0 ? "" : "-");        \
        !           180:     else if (isnan (VALUE))                                            \
        !           181:       {                                                                        \
        !           182:        union { double d; long l[2];} t;                                \
        !           183:        t.d = (VALUE);                                                  \
        !           184:        fprintf (FILE, "\t.long 0x%lx\n\t.long 0x%lx\n", t.l[0], t.l[1]); \
        !           185:       }                                                                        \
        !           186:     else                                                               \
        !           187:       fprintf (FILE, "\t.double 0r%.17g\n", VALUE);                    \
        !           188:   }
        !           189: 
        !           190: /* This is how to output an assembler line defining a `float' constant.  */
        !           191: 
        !           192: #undef ASM_OUTPUT_FLOAT
        !           193: #define ASM_OUTPUT_FLOAT(FILE,VALUE)                                   \
        !           194:   {                                                                    \
        !           195:     if (REAL_VALUE_ISINF (VALUE))                                      \
        !           196:       fprintf (FILE, "\t.single 0r%s99e999\n", (VALUE) > 0 ? "" : "-");        \
        !           197:     else if (isnan (VALUE))                                            \
        !           198:       {                                                                        \
        !           199:        union { float f; long l;} t;                                    \
        !           200:        t.f = (VALUE);                                                  \
        !           201:        fprintf (FILE, "\t.long 0x%lx\n", t.l);                         \
        !           202:       }                                                                        \
        !           203:     else                                                               \
        !           204:       fprintf (FILE, "\t.single 0r%.9g\n", VALUE);                     \
        !           205:   }
        !           206: 
        !           207: /* This is how to output an assembler lines defining floating operands.
        !           208:    There's no way to output a NaN's fraction, so we lose it.  */
        !           209:   
        !           210: #undef ASM_OUTPUT_FLOAT_OPERAND
        !           211: #define ASM_OUTPUT_FLOAT_OPERAND(FILE,VALUE)                           \
        !           212:   (REAL_VALUE_ISINF ((VALUE))                                          \
        !           213:    ? (asm_fprintf (FILE, "%I0r%s99e999", ((VALUE) > 0 ? "" : "-")), 0) \
        !           214:    : (VALUE) == -0.0                                                   \
        !           215:    ? (asm_fprintf (FILE, "%I0r-0.0"), 0)                               \
        !           216:    : (asm_fprintf (FILE, "%I0r%.9g", (VALUE)), 0))
        !           217: 
        !           218: #undef ASM_OUTPUT_DOUBLE_OPERAND
        !           219: #define ASM_OUTPUT_DOUBLE_OPERAND(FILE,VALUE)                          \
        !           220:   (REAL_VALUE_ISINF ((VALUE))                                          \
        !           221:    ? (asm_fprintf (FILE, "%I0r%s99e999", ((VALUE) > 0 ? "" : "-")), 0) \
        !           222:    : (VALUE) == -0.0                                                   \
        !           223:    ? (asm_fprintf (FILE, "%I0r-0.0"), 0)                               \
        !           224:    : (asm_fprintf (FILE, "%I0r%.17g", (VALUE)), 0))

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