gcc/config/i386/aix386ng.h

   1 /* Definitions for IBM PS2 running AIX/386.
   2    Copyright (C) 1988, 1996 Free Software Foundation, Inc.
   3    Contributed by Minh Tran-Le <TRANLE@intellicorp.com>.
   4
   5 This file is part of GNU CC.
   6
   7 GNU CC is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2, or (at your option)
  10 any later version.
  11
  12 GNU CC is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GNU CC; see the file COPYING.  If not, write to
  19 the Free Software Foundation, 59 Temple Place - Suite 330,
  20 Boston, MA 02111-1307, USA.  */
  21
  22
  23 #include "i386/i386.h"
  24
  25 /* Get the generic definitions for system V.3.  */
  26
  27 #include "svr3.h"
  28
  29 /* Use the ATT assembler syntax.
  30    This overrides at least one macro (USER_LABEL_PREFIX) from svr3.h.  */
  31
  32 #include "i386/att.h"
  33
  34 /* Use crt1.o as a startup file and crtn.o as a closing file.  */
  35
  36 #define STARTFILE_SPEC "%{pg:gcrt0.o%s}%{!pg:%{p:mcrt1.o%s}%{!p:crt1.o%s}}"
  37 #define ENDFILE_SPEC   "crtn.o%s"
  38
  39 #define LIB_SPEC "%{shlib:-lc_s} -lc"
  40
  41 /* Special flags for the linker.  I don't know what they do.  */
  42
  43 #define LINK_SPEC "%{K} %{!K:-K} %{T*} %{z:-lm}"
  44
  45 /* Specify predefined symbols in preprocessor.  */
  46
  47 #define CPP_PREDEFINES "-Dps2 -Dunix -Asystem(aix)"
  48
  49 #define CPP_SPEC "%(cpp_cpu) \
  50   %{posix:-D_POSIX_SOURCE}%{!posix:-DAIX} -D_I386 -D_AIX -D_MBCS"
  51
  52 /* special flags for the aix assembler to generate the short form for all
  53    qualifying forward reference */
  54 /* The buggy /bin/as of aix ps/2 1.2.x cannot always handle it. */
  55 #if 0
  56 #define ASM_SPEC "-s2"
  57 #endif /* 0 */
  58
  59 #undef ASM_FILE_START
  60 #define ASM_FILE_START(FILE)                                    \
  61   do { fprintf (FILE, "\t.file\t");                             \
  62        output_quoted_string (FILE, dump_base_name);             \
  63        fprintf (FILE, "\n");                                    \
  64        if (optimize)                                            \
  65           ASM_FILE_START_1 (FILE);                              \
  66        else                                                     \
  67           fprintf (FILE, "\t.noopt\n");                         \
  68      } while (0)
  69
  70 /* This was suggested, but it shouldn't be right for DBX output. -- RMS
  71    #define ASM_OUTPUT_SOURCE_FILENAME(FILE, NAME) */
  72
  73 /* Writing `int' for a bitfield forces int alignment for the structure.  */
  74
  75 #define PCC_BITFIELD_TYPE_MATTERS 1
  76
  77 #ifndef USE_GAS
  78 /* Don't write a `.optim' pseudo; this assembler
  79    is said to have a bug when .optim is used.  */
  80
  81 #undef ASM_FILE_START_1
  82 #define ASM_FILE_START_1(FILE) fprintf (FILE, "\t.noopt\n")
  83 #endif
  84 \f
  85 /* Output assembler code to FILE to increment profiler label # LABELNO
  86    for profiling a function entry.  */
  87
  88 #undef FUNCTION_PROFILER
  89 #define FUNCTION_PROFILER(FILE, LABELNO)  \
  90    fprintf (FILE, "\tleal %sP%d,%%eax\n\tcall mcount\n", LPREFIX, (LABELNO));
  91
  92 /* Note that using bss_section here caused errors
  93    in building shared libraries on system V.3.
  94    but AIX 1.2 does not have yet shareable libraries on PS2 */
  95 #undef ASM_OUTPUT_LOCAL
  96 #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED)  \
  97   (bss_section (),                                      \
  98    ASM_OUTPUT_LABEL ((FILE), (NAME)),                   \
  99    fprintf ((FILE), "\t.set .,.+%u\n", (ROUNDED)))
 100
 101
 102 /* Undef all the .init and .fini section stuff if we are not using gas and
 103  * gnu ld so that we can use collect because the standard /bin/as and /bin/ld
 104  * cannot handle those.
 105  */
 106 #ifndef USE_GAS
 107 # undef INIT_SECTION_ASM_OP
 108 # undef FINI_SECTION_ASM_OP
 109 # undef CTORS_SECTION_ASM_OP
 110 # undef DTORS_SECTION_ASM_OP
 111 # undef ASM_OUTPUT_CONSTRUCTOR
 112 # undef ASM_OUTPUT_DESTRUCTOR
 113 # undef DO_GLOBAL_CTORS_BODY
 114
 115 # undef CTOR_LIST_BEGIN
 116 # define CTOR_LIST_BEGIN
 117 # undef CTOR_LIST_END
 118 # define CTOR_LIST_END
 119 # undef DTOR_LIST_BEGIN
 120 # define DTOR_LIST_BEGIN
 121 # undef DTOR_LIST_END
 122 # define DTOR_LIST_END
 123
 124 # undef CONST_SECTION_FUNCTION
 125 # define CONST_SECTION_FUNCTION                                         \
 126 void                                                                    \
 127 const_section ()                                                        \
 128 {                                                                       \
 129   extern void text_section();                                           \
 130   text_section();                                                       \
 131 }
 132
 133 # undef EXTRA_SECTION_FUNCTIONS
 134 # define EXTRA_SECTION_FUNCTIONS                                \
 135   CONST_SECTION_FUNCTION
 136
 137 /* for collect2 */
 138 # define OBJECT_FORMAT_COFF
 139 # define MY_ISCOFF(magic) \
 140   ((magic) == I386MAGIC || (magic) == I386SVMAGIC)
 141
 142 #endif /* !USE_GAS */