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Annotation of GNUtools/cc/config/i860/paragon.h, revision 1.1

1.1     ! root        1: /* Target definitions for GNU compiler for Intel 80860 running OSF/1AD
        !             2:    Copyright (C) 1991 Free Software Foundation, Inc.
        !             3: 
        !             4:    Based upon original work of Ron Guilmette ([email protected]).
        !             5:    Whacked into submission by Andy Pfiffer ([email protected]).
        !             6:    Partially inspired by
        !             7:        Pete Beckman @ Indiana University ([email protected])
        !             8:        Harry Dolan of Intel Corporation ([email protected])
        !             9: 
        !            10: This file is part of GNU CC.
        !            11: 
        !            12: GNU CC is free software; you can redistribute it and/or modify
        !            13: it under the terms of the GNU General Public License as published by
        !            14: the Free Software Foundation; either version 2, or (at your option)
        !            15: any later version.
        !            16: 
        !            17: GNU CC is distributed in the hope that it will be useful,
        !            18: but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            19: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        !            20: GNU General Public License for more details.
        !            21: 
        !            22: You should have received a copy of the GNU General Public License
        !            23: along with GNU CC; see the file COPYING.  If not, write to
        !            24: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
        !            25: 
        !            26: #include "i860/i860.h"
        !            27: #include "svr3.h"
        !            28: 
        !            29: /* For the sake of libgcc2.c, indicate target supports atexit.  */
        !            30: #define HAVE_ATEXIT
        !            31: 
        !            32: #undef TARGET_SWITCHES
        !            33: #define TARGET_SWITCHES  \
        !            34:   { {"xp", 1},                  \
        !            35:     {"noxp", -1},               \
        !            36:     {"xr", -1},                 \
        !            37:     {"noieee", -1},            \
        !            38:     {"nx", 2},                  \
        !            39:     { "", TARGET_DEFAULT}}
        !            40:  
        !            41: #undef TARGET_DEFAULT
        !            42: #define TARGET_DEFAULT 1
        !            43: 
        !            44: /* The Intel as860 assembler does not understand .stabs, must use COFF */
        !            45: #define PREFERRED_DEBUGGING_TYPE SDB_DEBUG
        !            46: 
        !            47: #undef TARGET_VERSION
        !            48: #define TARGET_VERSION fprintf (stderr, " (i860 OSF/1AD)");
        !            49: 
        !            50: #undef CPP_PREDEFINES
        !            51: #define CPP_PREDEFINES "-Di860 -D__i860 -D__i860__ -D__PARAGON__ -D__OSF1__ -D_COFF -Dunix -DMACH -DCMU"
        !            52: 
        !            53: #define CPP_SPEC "%{mnx:-D__NODE}"
        !            54: 
        !            55: /* autoinit.o autolaunches NX applications */
        !            56: #define STARTFILE_SPEC "-ycrt0.o%s %{mnx:-yoptions/autoinit.o%s}"
        !            57: 
        !            58: /* libic.a is the PGI intrisic library */
        !            59: /* libpm.o and guard.o are for the performance monitoring modules (ignored) */
        !            60: /* /usr/lib/noieee contains non-IEEE compliant (but faster) math routines */
        !            61: #if    HAVE_DASH_G
        !            62: #define LIB_SPEC "%{mnoieee:-L/usr/lib/noieee} -L/usr/lib %{mnx:-lnx -lmach} %
        !            63: {g*:-lg} -lc -lic"
        !            64: #else  /* HAVE_DASH_G */
        !            65: /* can't use -g for -lg; libg.a doesn't have a symbol table and ld complains */
        !            66: #define LIB_SPEC "%{mnoieee:-L/usr/lib/noieee} -L/usr/lib %{mnx:-lnx -lmach} -lc -lic"
        !            67: #endif /* HAVE_DASH_G */
        !            68: 
        !            69: /* Get rid of definition from svr3.h.  */
        !            70: #undef SIZE_TYPE
        !            71: 
        !            72: #undef I860_REG_PREFIX
        !            73: 
        !            74: #undef ASM_COMMENT_START
        !            75: #define ASM_COMMENT_START "//"
        !            76: 
        !            77: #undef TYPE_OPERAND_FMT
        !            78: #define TYPE_OPERAND_FMT      "\"%s\""
        !            79: 
        !            80: #define DBX_REGISTER_NUMBER(REGNO) (REGNO)
        !            81: 
        !            82: #undef ASCII_DATA_ASM_OP
        !            83: #define ASCII_DATA_ASM_OP      ".byte"
        !            84: 
        !            85: /*
        !            86:  *     the assembler we're using doesn't grok .ident...
        !            87:  */
        !            88: #undef ASM_OUTPUT_IDENT
        !            89: #define ASM_OUTPUT_IDENT(FILE, NAME) \
        !            90:   fprintf (FILE, "//\t.ident \"%s\"\n", NAME);
        !            91: 
        !            92: /*
        !            93:  *     the assembler doesn't grok .double INF and the like
        !            94:  *     but does understand .long with hex numbers, so special
        !            95:  *     case the "symbolic" IEEE numbers.
        !            96:  */
        !            97: #undef ASM_OUTPUT_DOUBLE
        !            98: #define ASM_OUTPUT_DOUBLE(FILE,VALUE)                          \
        !            99:   {                                                            \
        !           100:     if (REAL_VALUE_ISINF (VALUE)                               \
        !           101:         || REAL_VALUE_ISNAN (VALUE)                            \
        !           102:        || REAL_VALUE_MINUS_ZERO (VALUE))                       \
        !           103:       {                                                                \
        !           104:        long t[2];                                              \
        !           105:        REAL_VALUE_TO_TARGET_DOUBLE ((VALUE), t);               \
        !           106:        fprintf (FILE, "\t.long 0x%lx\n\t.long 0x%lx\n", t[0], t[1]); \
        !           107:       }                                                                \
        !           108:     else                                                       \
        !           109:       fprintf (FILE, "\t.double %.20e\n", VALUE);              \
        !           110:   }
        !           111: 
        !           112: #undef ASM_OUTPUT_FLOAT
        !           113: #define ASM_OUTPUT_FLOAT(FILE,VALUE)                           \
        !           114:   {                                                            \
        !           115:     if (REAL_VALUE_ISINF (VALUE)                               \
        !           116:         || REAL_VALUE_ISNAN (VALUE)                            \
        !           117:        || REAL_VALUE_MINUS_ZERO (VALUE))                       \
        !           118:       {                                                                \
        !           119:        long t;                                                 \
        !           120:        REAL_VALUE_TO_TARGET_SINGLE ((VALUE), t);               \
        !           121:        fprintf (FILE, "\t.long 0x%lx\n", t);                   \
        !           122:       }                                                                \
        !           123:     else                                                       \
        !           124:       fprintf (FILE, "\t.float %.12e\n", VALUE);               \
        !           125:   }
        !           126: 
        !           127: #undef ASM_OUTPUT_ASCII
        !           128: #define ASM_OUTPUT_ASCII(FILE, STR, LENGTH)                    \
        !           129:   do                                                           \
        !           130:     {                                                          \
        !           131:       register unsigned char *str = (unsigned char *) (STR);   \
        !           132:       register unsigned char *limit = str + (LENGTH);          \
        !           133:       register unsigned bytes_in_chunk = 0;                    \
        !           134:       for (; str < limit; str++)                               \
        !           135:         {                                                      \
        !           136:           register unsigned ch = *str;                         \
        !           137:           if (ch < 32 || ch == '\\' || ch == '"' || ch >= 127) \
        !           138:            {                                                   \
        !           139:              if (bytes_in_chunk > 0)                           \
        !           140:                {                                               \
        !           141:                  fprintf ((FILE), "\"\n");                     \
        !           142:                  bytes_in_chunk = 0;                           \
        !           143:                }                                               \
        !           144:              fprintf ((FILE), "\t%s\t%d\n", ASM_BYTE_OP, ch);  \
        !           145:            }                                                   \
        !           146:           else                                                 \
        !           147:            {                                                   \
        !           148:              if (bytes_in_chunk >= 60)                         \
        !           149:                {                                               \
        !           150:                  fprintf ((FILE), "\"\n");                     \
        !           151:                  bytes_in_chunk = 0;                           \
        !           152:                }                                               \
        !           153:              if (bytes_in_chunk == 0)                          \
        !           154:                fprintf ((FILE), "\t%s\t\"", ASCII_DATA_ASM_OP);\
        !           155:              putc (ch, (FILE));                                \
        !           156:              bytes_in_chunk++;                                 \
        !           157:            }                                                   \
        !           158:         }                                                      \
        !           159:       if (bytes_in_chunk > 0)                                  \
        !           160:         fprintf ((FILE), "\"\n");                              \
        !           161:     }                                                          \
        !           162:   while (0)
        !           163: 
        !           164: 
        !           165: /* This says how to output an assembler line
        !           166:    to define a local common symbol.  */
        !           167: 
        !           168: #undef ASM_OUTPUT_LOCAL
        !           169: #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED)  \
        !           170: ( fputs (".lcomm ", (FILE)),                   \
        !           171:   assemble_name ((FILE), (NAME)),              \
        !           172:   fprintf ((FILE), ",%u\n", (ROUNDED)))
        !           173: 
        !           174: /*
        !           175:  *     not defining ASM_STABS_OP yields .stabs in the .s file
        !           176:  *     when using g++ -- so, I'll define it.
        !           177:  */
        !           178: #define        ASM_STABS_OP    "//.stabs"
        !           179: 
        !           180: /* Define this macro if an argument declared as `char' or `short' in a
        !           181:    prototype should actually be passed as an `int'.  In addition to
        !           182:    avoiding errors in certain cases of mismatch, it also makes for
        !           183:    better code on certain machines. */
        !           184: /*#define PROMOTE_PROTOTYPES*/
        !           185: 
        !           186: /* Define this macro if an instruction to load a value narrower
        !           187:    than a word from memory into a register also zero-extends the
        !           188:    value to the whole  register.  */
        !           189: /*#define BYTE_LOADS_ZERO_EXTEND*/
        !           190: 
        !           191: /* Define this macro as a C expression which is nonzero if
        !           192:    accessing less than a word of memory (i.e. a `char' or a
        !           193:    `short') is no faster than accessing a word of memory, i.e., if
        !           194:    such access require more than one instruction or if there is no
        !           195:    difference in cost between byte and (aligned) word loads.
        !           196: 
        !           197:    On RISC machines, it tends to generate better code to define
        !           198:    this as 1, since it avoids making a QI or HI mode register.  */
        !           199: /*
        !           200: #undef SLOW_BYTE_ACCESS
        !           201: #define SLOW_BYTE_ACCESS 1
        !           202: */
        !           203: 
        !           204: /* Define if shifts truncate the shift count
        !           205:    which implies one can omit a sign-extension or zero-extension
        !           206:    of a shift count. */
        !           207: #define SHIFT_COUNT_TRUNCATED 1
        !           208: 
        !           209: 
        !           210: #define FASTEST_ALIGNMENT 32
        !           211: 
        !           212: /* Make strings word-aligned so strcpy from constants will be faster.  */
        !           213: #define CONSTANT_ALIGNMENT(EXP, ALIGN)  \
        !           214:   (TREE_CODE (EXP) == STRING_CST       \
        !           215:    && (ALIGN) < FASTEST_ALIGNMENT ? FASTEST_ALIGNMENT : (ALIGN))
        !           216: 
        !           217: /* Make arrays of chars word-aligned for the same reasons.  */
        !           218: #define DATA_ALIGNMENT(TYPE, ALIGN)            \
        !           219:   (TREE_CODE (TYPE) == ARRAY_TYPE              \
        !           220:    && TYPE_MODE (TREE_TYPE (TYPE)) == QImode   \
        !           221:    && (ALIGN) < FASTEST_ALIGNMENT ? FASTEST_ALIGNMENT : (ALIGN))
        !           222: 
        !           223: /*
        !           224:  *     disable a few things picked up from svr3.h
        !           225:  */
        !           226: #undef INIT_SECTION_ASM_OP
        !           227: #undef FINI_SECTION_ASM_OP
        !           228: #undef CONST_SECTION_ASM_OP
        !           229: #undef CTORS_SECTION_ASM_OP
        !           230: #undef DTORS_SECTION_ASM_OP
        !           231: #undef DO_GLOBAL_CTORS_BODY
        !           232: #undef ASM_OUTPUT_DESTRUCTOR
        !           233: #undef SELECT_SECTION
        !           234: #undef SELECT_RTX_SECTION
        !           235: #undef READONLY_DATA_SECTION
        !           236: 
        !           237: #define        BSS_SECTION_ASM_OP      ".bss"          /* XXX */
        !           238: #undef EXTRA_SECTIONS
        !           239: #define        EXTRA_SECTIONS  in_bss
        !           240: #undef EXTRA_SECTION_FUNCTIONS
        !           241: #define        EXTRA_SECTION_FUNCTIONS         \
        !           242:        BSS_SECTION_FUNCTION

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