gcc/config/i386/att.h

   1 /* Definitions for AT&T assembler syntax for the Intel 80386.
   2    Copyright (C) 1988, 1996, 2000 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 /* Include common aspects of all 386 Unix assemblers.  */
  22 #include "i386/unix.h"
  23
  24 #define TARGET_VERSION fprintf (stderr, " (80386, ATT syntax)");
  25 \f
  26 /* Define the syntax of instructions and addresses.  */
  27
  28 /* Prefix for internally generated assembler labels.  */
  29 #define LPREFIX ".L"
  30
  31 /* Assembler pseudos to introduce constants of various size.  */
  32
  33 #define ASM_SHORT "\t.value\t"
  34 #define ASM_LONG "\t.long\t"
  35 #define ASM_QUAD "\t.quad\t"  /* Should not be used for 32bit compilation.  */
  36
  37 /* How to output an ASCII string constant.  */
  38
  39 #define ASM_OUTPUT_ASCII(FILE, PTR, SIZE)                       \
  40 do                                                              \
  41 { size_t i = 0, limit = (SIZE);                                 \
  42   while (i < limit)                                             \
  43     { if (i%10 == 0) { if (i!=0) fprintf ((FILE), "\n");        \
  44                        fputs ("\t.byte\t", (FILE)); }           \
  45       else fprintf ((FILE), ",");                               \
  46         fprintf ((FILE), "0x%x", ((PTR)[i++] & 0377)) ;}        \
  47       fprintf ((FILE), "\n");                                   \
  48 } while (0)
  49
  50 /* Output at beginning of assembler file.  */
  51 /* The .file command should always begin the output.  */
  52 #undef ASM_FILE_START
  53 #define ASM_FILE_START(FILE)                                            \
  54   do {                                                                  \
  55         output_file_directive (FILE, main_input_filename);              \
  56         if (target_flags & MASK_INTEL_SYNTAX)                           \
  57           fputs ("\t.intel_syntax\n", FILE);                            \
  58   } while (0)
  59
  60 /* Do use .optim by default on this machine.  */
  61 #undef ASM_FILE_START_1
  62 #define ASM_FILE_START_1(FILE) fprintf (FILE, "\t.optim\n")
  63
  64 /* This is how to output an assembler line
  65    that says to advance the location counter
  66    to a multiple of 2**LOG bytes.  */
  67
  68 #define ASM_OUTPUT_ALIGN(FILE,LOG)      \
  69     if ((LOG)!=0) fprintf ((FILE), "\t.align %d\n", 1<<(LOG))
  70
  71 /* This is how to output an assembler line
  72    that says to advance the location counter by SIZE bytes.  */
  73
  74 #define ASM_OUTPUT_SKIP(FILE,SIZE)  \
  75   fprintf ((FILE), "\t.set .,.+%u\n", (SIZE))
  76
  77 /* Can't use ASM_OUTPUT_SKIP in text section; it doesn't leave 0s.  */
  78
  79 #define ASM_NO_SKIP_IN_TEXT 1
  80 \f
  81 /* Define the syntax of labels and symbol definitions/declarations.  */
  82
  83 /* The prefix to add for compiler private assembler symbols.  */
  84 #undef LOCAL_LABEL_PREFIX
  85 #define LOCAL_LABEL_PREFIX "."
  86
  87 /* This is how to store into the string BUF
  88    the symbol_ref name of an internal numbered label where
  89    PREFIX is the class of label and NUM is the number within the class.
  90    This is suitable for output with `assemble_name'.  */
  91
  92 #undef ASM_GENERATE_INTERNAL_LABEL
  93 #define ASM_GENERATE_INTERNAL_LABEL(BUF,PREFIX,NUMBER)  \
  94   sprintf ((BUF), "%s%s%ld", LOCAL_LABEL_PREFIX, (PREFIX), (long)(NUMBER))
  95
  96 /* This is how to output an internal numbered label where
  97    PREFIX is the class of label and NUM is the number within the class.  */
  98
  99 #undef ASM_OUTPUT_INTERNAL_LABEL
 100 #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM)      \
 101   fprintf (FILE, "%s%s%d:\n", LOCAL_LABEL_PREFIX, PREFIX, NUM)
 102
 103 /* The prefix to add to user-visible assembler symbols.  */
 104
 105 #undef USER_LABEL_PREFIX
 106 #define USER_LABEL_PREFIX ""