gcc/config/m68k/amix.h

   1 /* Definitions of target machine for GNU compiler.
   2    Commodore Amiga A3000UX version.
   3
   4    Copyright (C) 1991, 1993, 2000 Free Software Foundation, Inc.
   5
   6 This file is part of GNU CC.
   7
   8 GNU CC is free software; you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation; either version 2, or (at your option)
  11 any later version.
  12
  13 GNU CC is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GNU CC; see the file COPYING.  If not, write to
  20 the Free Software Foundation, 59 Temple Place - Suite 330,
  21 Boston, MA 02111-1307, USA.  */
  22
  23 #include "m68k/m68kv4.h"
  24
  25 /* rhealey@aggregate.com says dots are no good either.  */
  26 #define NO_DOT_IN_LABEL
  27
  28 /* Alter assembler syntax for fsgldiv and fsglmul.
  29    It is highly likely that this is a generic SGS m68k assembler dependency.
  30    If so, it should eventually be handled in the m68k/sgs.h ASM_OUTPUT_OPCODE
  31    macro, like the other SGS assembler quirks.  -fnf */
  32
  33 #define FSGLDIV_USE_S           /* Use fsgldiv.s, not fsgldiv.x */
  34 #define FSGLMUL_USE_S           /* Use fsglmul.s, not fsglmul.x */
  35
  36 /* Names to predefine in the preprocessor for this target machine.  For the
  37    Amiga, these definitions match those of the native AT&T compiler.  Note
  38    that we override the definition in m68kv4.h, where SVR4 is defined and
  39    AMIX isn't.  */
  40
  41 #undef CPP_PREDEFINES
  42 #define CPP_PREDEFINES \
  43   "-Dm68k -Dunix -DAMIX -D__svr4__ -D__motorola__ \
  44  -Amachine=m68k -Acpu=m68k -Asystem=unix -Alint=off"
  45
  46 /* At end of a switch table, define LDnnn iff the symbol LInnn was defined.
  47    Some SGS assemblers have a bug such that "Lnnn-LInnn-2.b(pc,d0.l*2)"
  48    fails to assemble.  Luckily "Lnnn(pc,d0.l*2)" produces the results
  49    we want.  This difference can be accommodated by making the assembler
  50    define such "LDnnn" to be either "Lnnn-LInnn-2.b", "Lnnn", or any other
  51    string, as necessary.  This is accomplished via the ASM_OUTPUT_CASE_END
  52    macro. (the Amiga assembler has this bug) */
  53
  54 #undef ASM_OUTPUT_CASE_END
  55 #define ASM_OUTPUT_CASE_END(FILE,NUM,TABLE)                             \
  56 do {                                                                    \
  57   if (switch_table_difference_label_flag)                               \
  58     asm_fprintf ((FILE), "%s%LLD%d,%LL%d\n", SET_ASM_OP, (NUM), (NUM));\
  59   switch_table_difference_label_flag = 0;                               \
  60 } while (0)
  61
  62 int switch_table_difference_label_flag;
  63
  64 /* This says how to output assembler code to declare an
  65    uninitialized external linkage data object.  Under SVR4,
  66    the linker seems to want the alignment of data objects
  67    to depend on their types.  We do exactly that here.
  68    [This macro overrides the one in svr4.h because the amix assembler
  69     has a minimum default alignment of 4, and will not accept any
  70     explicit alignment smaller than this.  -fnf] */
  71
  72 #undef ASM_OUTPUT_ALIGNED_COMMON
  73 #define ASM_OUTPUT_ALIGNED_COMMON(FILE, NAME, SIZE, ALIGN)              \
  74 do {                                                                    \
  75   fputs ("\t.comm\t", (FILE));                                          \
  76   assemble_name ((FILE), (NAME));                                       \
  77   fprintf ((FILE), ",%u,%u\n", (SIZE), MAX ((ALIGN) / BITS_PER_UNIT, 4)); \
  78 } while (0)
  79
  80 /* This says how to output assembler code to declare an
  81    uninitialized internal linkage data object.  Under SVR4,
  82    the linker seems to want the alignment of data objects
  83    to depend on their types.  We do exactly that here.
  84    [This macro overrides the one in svr4.h because the amix assembler
  85     has a minimum default alignment of 4, and will not accept any
  86     explicit alignment smaller than this.  -fnf] */
  87
  88 #undef ASM_OUTPUT_ALIGNED_LOCAL
  89 #define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGN)               \
  90 do {                                                                    \
  91   fprintf ((FILE), "%s%s,%u,%u\n",                                      \
  92            BSS_ASM_OP, (NAME), (SIZE), MAX ((ALIGN) / BITS_PER_UNIT, 4)); \
  93 } while (0)
  94
  95 /* This definition of ASM_OUTPUT_ASCII is the same as the one in m68k/sgs.h,
  96    which has been overridden by the one in svr4.h.  However, we can't use
  97    the one in svr4.h because the amix assembler croaks on some of the
  98    strings that it emits (such as .string "\"%s\"\n").  */
  99
 100 #undef ASM_OUTPUT_ASCII
 101 #define ASM_OUTPUT_ASCII(FILE,PTR,LEN)                          \
 102 do {                                                            \
 103   register size_t sp = 0, limit = (LEN);                        \
 104   fputs (integer_asm_op (1, TRUE), (FILE));                     \
 105   do {                                                          \
 106     int ch = (PTR)[sp];                                         \
 107     if (ch > ' ' && ! (ch & 0x80) && ch != '\\')                \
 108       {                                                         \
 109         fprintf ((FILE), "'%c", ch);                            \
 110       }                                                         \
 111     else                                                        \
 112       {                                                         \
 113         fprintf ((FILE), "0x%x", ch);                           \
 114       }                                                         \
 115     if (++sp < limit)                                           \
 116       {                                                         \
 117         if ((sp % 10) == 0)                                     \
 118           {                                                     \
 119             fprintf ((FILE), "\n%s", integer_asm_op (1, TRUE)); \
 120           }                                                     \
 121         else                                                    \
 122           {                                                     \
 123             putc (',', (FILE));                                 \
 124           }                                                     \
 125       }                                                         \
 126   } while (sp < limit);                                         \
 127   putc ('\n', (FILE));                                          \
 128 } while (0)
 129 \f
 130 /* The following should be unnecessary as a result of PIC_CASE_VECTOR_ADDRESS.
 131    But rhealey@aggregate.com says they are still needed.  */
 132
 133 /* Override these for the sake of an assembler bug: the Amix
 134    assembler can't handle .LC0@GOT syntax.  This pollutes the final
 135    table for shared librarys but what's a poor soul to do; sigh... RFH */
 136
 137 #undef ASM_GENERATE_INTERNAL_LABEL
 138 #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)   \
 139 do {                                                    \
 140   if (flag_pic && !strcmp(PREFIX,"LC"))                 \
 141     sprintf (LABEL, "*%s%%%ld", PREFIX, (long)(NUM));   \
 142   else                                                  \
 143     sprintf (LABEL, "*%s%s%ld", LOCAL_LABEL_PREFIX, PREFIX, (long)(NUM)); \
 144 } while (0)
 145
 146 #undef ASM_OUTPUT_INTERNAL_LABEL
 147 #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM)      \
 148   if (flag_pic && !strcmp(PREFIX,"LC"))                 \
 149     asm_fprintf (FILE, "%s%%%d:\n", PREFIX, NUM);       \
 150   else                                                  \
 151     asm_fprintf (FILE, "%0L%s%d:\n", PREFIX, NUM)