gcc/config/i860/paragon.h

   1 /* Target definitions for GNU compiler for Intel 80860 running OSF/1AD
   2    Copyright (C) 1991, 1996, 1999, 2000 Free Software Foundation, Inc.
   3    Based upon original work of Ron Guilmette (rfg@monkeys.com).
   4    Contributed by Andy Pfiffer (andyp@ssd.intel.com).
   5    Partially inspired by
   6         Pete Beckman of Indiana University (beckman@cs.indiana.edu)
   7         Harry Dolan of Intel Corporation (dolan@ssd.intel.com)
   8
   9 This file is part of GNU CC.
  10
  11 GNU CC is free software; you can redistribute it and/or modify
  12 it under the terms of the GNU General Public License as published by
  13 the Free Software Foundation; either version 2, or (at your option)
  14 any later version.
  15
  16 GNU CC is distributed in the hope that it will be useful,
  17 but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 GNU General Public License for more details.
  20
  21 You should have received a copy of the GNU General Public License
  22 along with GNU CC; see the file COPYING.  If not, write to
  23 the Free Software Foundation, 59 Temple Place - Suite 330,
  24 Boston, MA 02111-1307, USA.  */
  25
  26 #undef TARGET_SWITCHES
  27 #define TARGET_SWITCHES  \
  28   { {"xp", 1, N_("Generate code which uses the FPU")},              \
  29     {"noxp", -1, N_("Do not generate code which uses the FPU")},    \
  30     {"xr", -1, N_("Do not generate code which uses the FPU")},      \
  31     {"noieee", -1, N_("Do not generate code which uses the FPU")},      \
  32     {"nx", 2, NULL},                  \
  33     { "", TARGET_DEFAULT, NULL}}
  34
  35 #undef TARGET_DEFAULT
  36 #define TARGET_DEFAULT 1
  37
  38 /* The Intel as860 assembler does not understand .stabs, must use COFF */
  39 #define PREFERRED_DEBUGGING_TYPE SDB_DEBUG
  40
  41 #undef TARGET_VERSION
  42 #define TARGET_VERSION fprintf (stderr, " (i860 OSF/1AD)");
  43
  44 #undef CPP_PREDEFINES
  45 #define CPP_PREDEFINES  "-Di860 -D__i860 -D__i860__ -D__PARAGON__ -D__OSF1__ -D_COFF -Dunix -DMACH -DCMU"
  46
  47 #define CPP_SPEC "%{mnx:-D__NODE}"
  48
  49 /* autoinit.o autolaunches NX applications */
  50 #define STARTFILE_SPEC "crt0.o%s %{mnx:-yoptions/autoinit.o%s}"
  51
  52 /* libic.a is the PGI intrinsic library */
  53 /* libpm.o and guard.o are for the performance monitoring modules (ignored) */
  54 /* /usr/lib/noieee contains non-IEEE compliant (but faster) math routines */
  55 #if     HAVE_DASH_G
  56 #define LIB_SPEC \
  57 "%{mnoieee:-L/usr/lib/noieee} %{mnx:-lnx} %{g*:-lg} -lc -lmach -lc -lic"
  58 #else   /* HAVE_DASH_G */
  59 /* can't use -g for -lg; libg.a doesn't have a symbol table and ld complains */
  60 #define LIB_SPEC "%{mnoieee:-L/usr/lib/noieee} %{mnx:-lnx} -lc -lmach -lc -lic"
  61 #endif  /* HAVE_DASH_G */
  62
  63 /* Get rid of definition from svr3.h.  */
  64 #undef SIZE_TYPE
  65
  66 #undef  I860_REG_PREFIX
  67
  68 #undef  ASM_COMMENT_START
  69 #define ASM_COMMENT_START "//"
  70
  71 #undef TYPE_OPERAND_FMT
  72 #define TYPE_OPERAND_FMT      "\"%s\""
  73
  74 #undef ASCII_DATA_ASM_OP
  75 #define ASCII_DATA_ASM_OP       "\t.byte\t"
  76
  77 /*
  78  *      the assembler we're using doesn't grok .ident...
  79  */
  80 #undef  ASM_OUTPUT_IDENT
  81 #define ASM_OUTPUT_IDENT(FILE, NAME) \
  82   fprintf (FILE, "//\t.ident \"%s\"\n", NAME);
  83
  84 #undef  ASM_OUTPUT_ASCII
  85 #define ASM_OUTPUT_ASCII(FILE, STR, LENGTH)                     \
  86   do                                                            \
  87     {                                                           \
  88       register const unsigned char *str = (const unsigned char *) (STR); \
  89       register const unsigned char *limit = str + (LENGTH);     \
  90       register unsigned bytes_in_chunk = 0;                     \
  91       for (; str < limit; str++)                                \
  92         {                                                       \
  93           register unsigned ch = *str;                          \
  94           if (ch < 32 || ch == '\\' || ch == '"' || ch >= 127)  \
  95             {                                                   \
  96               if (bytes_in_chunk > 0)                           \
  97                 {                                               \
  98                   fprintf ((FILE), "\"\n");                     \
  99                   bytes_in_chunk = 0;                           \
 100                 }                                               \
 101               assemble_aligned_integer (1, GEN_INT (ch));       \
 102             }                                                   \
 103           else                                                  \
 104             {                                                   \
 105               if (bytes_in_chunk >= 60)                         \
 106                 {                                               \
 107                   fprintf ((FILE), "\"\n");                     \
 108                   bytes_in_chunk = 0;                           \
 109                 }                                               \
 110               if (bytes_in_chunk == 0)                          \
 111                 fprintf ((FILE), "%s\"", ASCII_DATA_ASM_OP);    \
 112               putc (ch, (FILE));                                \
 113               bytes_in_chunk++;                                 \
 114             }                                                   \
 115         }                                                       \
 116       if (bytes_in_chunk > 0)                                   \
 117         fprintf ((FILE), "\"\n");                               \
 118     }                                                           \
 119   while (0)
 120
 121
 122 /* This says how to output an assembler line
 123    to define a local common symbol.  */
 124
 125 #undef ASM_OUTPUT_LOCAL
 126 #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED)  \
 127 ( fputs (".lcomm ", (FILE)),                    \
 128   assemble_name ((FILE), (NAME)),               \
 129   fprintf ((FILE), ",%u\n", (ROUNDED)))
 130
 131 /*
 132  *      not defining ASM_STABS_OP yields .stabs in the .s file
 133  *      when using g++ -- so, I'll define it.
 134  */
 135 #define ASM_STABS_OP    "//.stabs"
 136
 137 /* Define this macro if an instruction to load a value narrower
 138    than a word from memory into a register also zero-extends the
 139    value to the whole  register.  */
 140 /*#define BYTE_LOADS_ZERO_EXTEND*/
 141
 142 /* Define this macro as a C expression which is nonzero if
 143    accessing less than a word of memory (i.e. a `char' or a
 144    `short') is no faster than accessing a word of memory, i.e., if
 145    such access require more than one instruction or if there is no
 146    difference in cost between byte and (aligned) word loads.
 147
 148    On RISC machines, it tends to generate better code to define
 149    this as 1, since it avoids making a QI or HI mode register.  */
 150 /*
 151 #undef SLOW_BYTE_ACCESS
 152 #define SLOW_BYTE_ACCESS 1
 153 */
 154
 155 /* Define if shifts truncate the shift count
 156    which implies one can omit a sign-extension or zero-extension
 157    of a shift count. */
 158 #define SHIFT_COUNT_TRUNCATED 1
 159
 160
 161 #define FASTEST_ALIGNMENT 32
 162
 163 /* Make strings word-aligned so strcpy from constants will be faster.  */
 164 #define CONSTANT_ALIGNMENT(EXP, ALIGN)  \
 165   (TREE_CODE (EXP) == STRING_CST        \
 166    && (ALIGN) < FASTEST_ALIGNMENT ? FASTEST_ALIGNMENT : (ALIGN))
 167
 168 /* Make arrays of chars word-aligned for the same reasons.  */
 169 #define DATA_ALIGNMENT(TYPE, ALIGN)             \
 170   (TREE_CODE (TYPE) == ARRAY_TYPE               \
 171    && TYPE_MODE (TREE_TYPE (TYPE)) == QImode    \
 172    && (ALIGN) < FASTEST_ALIGNMENT ? FASTEST_ALIGNMENT : (ALIGN))
 173
 174 /*
 175  *      disable a few things picked up from svr3.h
 176  */
 177 #undef INIT_SECTION_ASM_OP
 178 #undef FINI_SECTION_ASM_OP
 179 #undef CONST_SECTION_ASM_OP
 180 #undef CTORS_SECTION_ASM_OP
 181 #undef DTORS_SECTION_ASM_OP
 182 #undef DO_GLOBAL_CTORS_BODY
 183 #undef ASM_OUTPUT_DESTRUCTOR
 184 #undef SELECT_SECTION
 185 #undef SELECT_RTX_SECTION
 186 #undef READONLY_DATA_SECTION
 187
 188 #define BSS_SECTION_ASM_OP      "\t.bss"        /* XXX */
 189 #undef EXTRA_SECTIONS
 190 #undef EXTRA_SECTION_FUNCTIONS