gcc/config/i386/ptx4-i.h

   1 /* Target definitions for GNU compiler for Intel 80386 running Dynix/ptx v4
   2    Copyright (C) 1996 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 GNU CC.
   9
  10 GNU CC 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 GNU CC 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 GNU CC; see the file COPYING.  If not, write to
  22 the Free Software Foundation, 59 Temple Place - Suite 330,
  23 Boston, MA 02111-1307, USA.  */
  24
  25
  26 #undef TARGET_VERSION
  27 #define TARGET_VERSION fprintf (stderr, " (i386 Sequent Dynix/ptx Version 4)");
  28
  29 /* The svr4 ABI for the i386 says that records and unions are returned
  30    in memory.  */
  31
  32 #undef RETURN_IN_MEMORY
  33 #define RETURN_IN_MEMORY(TYPE) \
  34   (TYPE_MODE (TYPE) == BLKmode \
  35    || (VECTOR_MODE_P (TYPE_MODE (TYPE)) && int_size_in_bytes (TYPE) == 8))
  36
  37 /* Define which macros to predefine.  _SEQUENT_ is our extension.  */
  38 /* This used to define X86, but james@bigtex.cactus.org says that
  39    is supposed to be defined optionally by user programs--not by default.  */
  40 #define CPP_PREDEFINES \
  41   "-Dunix -D_SEQUENT_ -Asystem=unix -Asystem=ptx4"
  42
  43 #undef DBX_REGISTER_NUMBER
  44 #define DBX_REGISTER_NUMBER(n)  svr4_dbx_register_map[n]
  45
  46 /* The routine used to output sequences of byte values.  We use a special
  47    version of this for most svr4 targets because doing so makes the
  48    generated assembly code more compact (and thus faster to assemble)
  49    as well as more readable.  Note that if we find subparts of the
  50    character sequence which end with NUL (and which are shorter than
  51    STRING_LIMIT) we output those using ASM_OUTPUT_LIMITED_STRING.  */
  52
  53 #undef ASM_OUTPUT_ASCII
  54 #define ASM_OUTPUT_ASCII(FILE, STR, LENGTH)                             \
  55   do                                                                    \
  56     {                                                                   \
  57       register const unsigned char *_ascii_bytes =                      \
  58         (const unsigned char *) (STR);                                  \
  59       register const unsigned char *limit = _ascii_bytes + (LENGTH);    \
  60       register unsigned bytes_in_chunk = 0;                             \
  61       for (; _ascii_bytes < limit; _ascii_bytes++)                      \
  62         {                                                               \
  63           register const unsigned char *p;                              \
  64           if (bytes_in_chunk >= 64)                                     \
  65             {                                                           \
  66               fputc ('\n', (FILE));                                     \
  67               bytes_in_chunk = 0;                                       \
  68             }                                                           \
  69           for (p = _ascii_bytes; p < limit && *p != '\0'; p++)          \
  70             continue;                                                   \
  71           if (p < limit && (p - _ascii_bytes) <= (long) STRING_LIMIT)   \
  72             {                                                           \
  73               if (bytes_in_chunk > 0)                                   \
  74                 {                                                       \
  75                   fputc ('\n', (FILE));                                 \
  76                   bytes_in_chunk = 0;                                   \
  77                 }                                                       \
  78               ASM_OUTPUT_LIMITED_STRING ((FILE), _ascii_bytes);         \
  79               _ascii_bytes = p;                                         \
  80             }                                                           \
  81           else                                                          \
  82             {                                                           \
  83               if (bytes_in_chunk == 0)                                  \
  84                 fprintf ((FILE), "\t.byte\t");                          \
  85               else                                                      \
  86                 fputc (',', (FILE));                                    \
  87               fprintf ((FILE), "0x%02x", *_ascii_bytes);                \
  88               bytes_in_chunk += 5;                                      \
  89             }                                                           \
  90         }                                                               \
  91       if (bytes_in_chunk > 0)                                           \
  92         fprintf ((FILE), "\n");                                         \
  93     }                                                                   \
  94   while (0)