contrib/gcc/config/i386/ptx4-i.h

   1 /* Target definitions for GCC for Intel 80386 running Dynix/ptx v4
   2    Copyright (C) 1996, 2002 Free Software Foundation, Inc.
   3
   4    Modified from sysv4.h
   5    Originally written by Ron Guilmette (rfg@netcom.com).
   6    Modified by Tim Wright (timw@sequent.com).
   7
   8 This file is part of GCC.
   9
  10 GCC 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 GCC 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 GCC; see the file COPYING.  If not, write to
  22 the Free Software Foundation, 51 Franklin Street, Fifth Floor,
  23 Boston, MA 02110-1301, USA.  */
  24
  25
  26 #define TARGET_VERSION fprintf (stderr, " (i386 Sequent Dynix/ptx Version 4)");
  27
  28 /* The svr4 ABI for the i386 says that records and unions are returned
  29    in memory.  */
  30
  31 #undef RETURN_IN_MEMORY
  32 #define RETURN_IN_MEMORY(TYPE) \
  33   (TYPE_MODE (TYPE) == BLKmode \
  34    || (VECTOR_MODE_P (TYPE_MODE (TYPE)) && int_size_in_bytes (TYPE) == 8))
  35
  36 #define TARGET_OS_CPP_BUILTINS()                \
  37   do                                            \
  38     {                                           \
  39         builtin_define_std ("unix");            \
  40         builtin_define ("_SEQUENT_");           \
  41         builtin_assert ("system=unix");         \
  42         builtin_assert ("system=ptx4");         \
  43     }                                           \
  44   while (0)
  45
  46 #undef DBX_REGISTER_NUMBER
  47 #define DBX_REGISTER_NUMBER(n)  svr4_dbx_register_map[n]
  48
  49 /* The routine used to output sequences of byte values.  We use a special
  50    version of this for most svr4 targets because doing so makes the
  51    generated assembly code more compact (and thus faster to assemble)
  52    as well as more readable.  Note that if we find subparts of the
  53    character sequence which end with NUL (and which are shorter than
  54    STRING_LIMIT) we output those using ASM_OUTPUT_LIMITED_STRING.  */
  55
  56 #undef ASM_OUTPUT_ASCII
  57 #define ASM_OUTPUT_ASCII(FILE, STR, LENGTH)                             \
  58   do                                                                    \
  59     {                                                                   \
  60       const unsigned char *_ascii_bytes =                               \
  61         (const unsigned char *) (STR);                                  \
  62       const unsigned char *limit = _ascii_bytes + (LENGTH);             \
  63       unsigned bytes_in_chunk = 0;                                      \
  64       for (; _ascii_bytes < limit; _ascii_bytes++)                      \
  65         {                                                               \
  66           const unsigned char *p;                                       \
  67           if (bytes_in_chunk >= 64)                                     \
  68             {                                                           \
  69               fputc ('\n', (FILE));                                     \
  70               bytes_in_chunk = 0;                                       \
  71             }                                                           \
  72           for (p = _ascii_bytes; p < limit && *p != '\0'; p++)          \
  73             continue;                                                   \
  74           if (p < limit && (p - _ascii_bytes) <= (long) STRING_LIMIT)   \
  75             {                                                           \
  76               if (bytes_in_chunk > 0)                                   \
  77                 {                                                       \
  78                   fputc ('\n', (FILE));                                 \
  79                   bytes_in_chunk = 0;                                   \
  80                 }                                                       \
  81               ASM_OUTPUT_LIMITED_STRING ((FILE), _ascii_bytes);         \
  82               _ascii_bytes = p;                                         \
  83             }                                                           \
  84           else                                                          \
  85             {                                                           \
  86               if (bytes_in_chunk == 0)                                  \
  87                 fprintf ((FILE), "\t.byte\t");                          \
  88               else                                                      \
  89                 fputc (',', (FILE));                                    \
  90               fprintf ((FILE), "0x%02x", *_ascii_bytes);                \
  91               bytes_in_chunk += 5;                                      \
  92             }                                                           \
  93         }                                                               \
  94       if (bytes_in_chunk > 0)                                           \
  95         fprintf ((FILE), "\n");                                         \
  96     }                                                                   \
  97   while (0)