gcc/config/i386/unix.h

   1 /* Definitions for Unix assembler syntax for the Intel 80386.
   2    Copyright (C) 1988, 1994, 1999, 2000, 2001 Free Software Foundation, Inc.
   3
   4 This file is part of GNU CC.
   5
   6 GNU CC 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 2, or (at your option)
   9 any later version.
  10
  11 GNU CC 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 You should have received a copy of the GNU General Public License
  17 along with GNU CC; see the file COPYING.  If not, write to
  18 the Free Software Foundation, 59 Temple Place - Suite 330,
  19 Boston, MA 02111-1307, USA.  */
  20
  21 /* This file defines the aspects of assembler syntax
  22    that are the same for all the i386 Unix systems
  23    (though they may differ in non-Unix systems).  */
  24
  25 #define DEFAULT_ASSEMBLER_DIALECT 0
  26
  27 /* Define macro used to output shift-double opcodes when the shift
  28    count is in %cl.  Some assemblers require %cl as an argument;
  29    some don't.  This macro controls what to do: by default, don't
  30    print %cl.  */
  31 #define SHIFT_DOUBLE_OMITS_COUNT 1
  32 \f
  33 /* Define the syntax of pseudo-ops, labels and comments.  */
  34
  35 /* String containing the assembler's comment-starter.  */
  36
  37 #define ASM_COMMENT_START "/"
  38
  39 /* Output to assembler file text saying following lines
  40    may contain character constants, extra white space, comments, etc.  */
  41
  42 #define ASM_APP_ON "/APP\n"
  43
  44 /* Output to assembler file text saying following lines
  45    no longer contain unusual constructs.  */
  46
  47 #define ASM_APP_OFF "/NO_APP\n"
  48
  49 /* Output before read-only data.  */
  50
  51 #define TEXT_SECTION_ASM_OP "\t.text"
  52
  53 /* Output before writable (initialized) data.  */
  54
  55 #define DATA_SECTION_ASM_OP "\t.data"
  56
  57 /* Output before writable (uninitialized) data.  */
  58
  59 #define BSS_SECTION_ASM_OP "\t.bss"
  60
  61 /* This is how to output a command to make the user-level label named NAME
  62    defined for reference from other files.  */
  63
  64 #define ASM_GLOBALIZE_LABEL(FILE,NAME)  \
  65   (fputs (".globl ", FILE), assemble_name (FILE, NAME), fputs ("\n", FILE))
  66
  67 /* By default, target has a 80387, uses IEEE compatible arithmetic,
  68    and returns float values in the 387.  */
  69
  70 #define TARGET_SUBTARGET_DEFAULT (MASK_80387 | MASK_IEEE_FP | MASK_FLOAT_RETURNS)
  71
  72 /* Floating-point return values come in the FP register.  */
  73
  74 #define VALUE_REGNO(MODE) \
  75   (GET_MODE_CLASS (MODE) == MODE_FLOAT                          \
  76    && TARGET_FLOAT_RETURNS_IN_80387 ? FIRST_FLOAT_REG           \
  77    : (MODE) == TImode || VECTOR_MODE_P (MODE) ? FIRST_SSE_REG   \
  78    : 0)
  79
  80 /* Output code to add DELTA to the first argument, and then jump to FUNCTION.
  81    Used for C++ multiple inheritance.  */
  82 #define ASM_OUTPUT_MI_THUNK(FILE, THUNK_FNDECL, DELTA, FUNCTION) \
  83     x86_output_mi_thunk (FILE, DELTA, FUNCTION);