gcc/config/i386/unix.h

   1 /* Definitions for Unix assembler syntax for the Intel 80386.
   2    Copyright (C) 1988-2017 Free Software Foundation, Inc.
   3
   4 This file is part of GCC.
   5
   6 GCC is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 3, or (at your option)
   9 any later version.
  10
  11 GCC is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 Under Section 7 of GPL version 3, you are granted additional
  17 permissions described in the GCC Runtime Library Exception, version
  18 3.1, as published by the Free Software Foundation.
  19
  20 You should have received a copy of the GNU General Public License and
  21 a copy of the GCC Runtime Library Exception along with this program;
  22 see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  23 <http://www.gnu.org/licenses/>.  */
  24
  25 /* This file defines the aspects of assembler syntax
  26    that are the same for all the i386 Unix systems
  27    (though they may differ in non-Unix systems).  */
  28
  29 /* Define macro used to output shift-double opcodes when the shift
  30    count is in %cl.  Some assemblers require %cl as an argument;
  31    some don't.  This macro controls what to do: by default, don't
  32    print %cl.  */
  33 #define SHIFT_DOUBLE_OMITS_COUNT 1
  34 \f
  35 /* Define the syntax of pseudo-ops, labels and comments.  */
  36
  37 /* String containing the assembler's comment-starter.
  38    Note the trailing space is necessary in case the character
  39    that immediately follows the comment is '*'.  If this happens
  40    and the space is not there the assembler will interpret this
  41    as the start of a C-like slash-star comment and complain when
  42    there is no terminator.  */
  43
  44 #define ASM_COMMENT_START "/ "
  45
  46 /* Output to assembler file text saying following lines
  47    may contain character constants, extra white space, comments, etc.  */
  48
  49 #define ASM_APP_ON "/APP\n"
  50
  51 /* Output to assembler file text saying following lines
  52    no longer contain unusual constructs.  */
  53
  54 #define ASM_APP_OFF "/NO_APP\n"
  55
  56 /* Output before read-only data.  */
  57
  58 #define TEXT_SECTION_ASM_OP "\t.text"
  59
  60 /* Output before writable (initialized) data.  */
  61
  62 #define DATA_SECTION_ASM_OP "\t.data"
  63
  64 /* Output before writable (uninitialized) data.  */
  65
  66 #define BSS_SECTION_ASM_OP "\t.bss"
  67
  68 /* Globalizing directive for a label.  */
  69 #define GLOBAL_ASM_OP "\t.globl\t"
  70
  71 /* By default, target has a 80387, uses IEEE compatible arithmetic,
  72    and returns float values in the 387.  */
  73 #undef TARGET_SUBTARGET_DEFAULT
  74 #define TARGET_SUBTARGET_DEFAULT \
  75         (MASK_80387 | MASK_IEEE_FP | MASK_FLOAT_RETURNS)
  76
  77 /* By default, 64-bit mode uses 128-bit long double.  */
  78 #undef TARGET_SUBTARGET64_DEFAULT
  79 #define TARGET_SUBTARGET64_DEFAULT \
  80         MASK_128BIT_LONG_DOUBLE