gcc/config/i386/bsd.h

   1 /* Definitions for BSD assembler syntax for Intel 386
   2    (actually AT&T syntax for insns and operands,
   3    adapted to BSD conventions for symbol names and debugging.)
   4    Copyright (C) 1988, 1996 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 common aspects of all 386 Unix assemblers.  */
  24 #include "i386/unix.h"
  25
  26 /* Use the Sequent Symmetry assembler syntax.  */
  27
  28 #define TARGET_VERSION fprintf (stderr, " (80386, BSD syntax)");
  29 \f
  30 /* Define the syntax of pseudo-ops, labels and comments.  */
  31
  32 /* Prefix for internally generated assembler labels.  If we aren't using
  33    underscores, we are using prefix `.'s to identify labels that should
  34    be ignored, as in `i386/gas.h' --karl@cs.umb.edu  */
  35 #ifdef NO_UNDERSCORES
  36 #define LPREFIX ".L"
  37 #else
  38 #define LPREFIX "L"
  39 #endif /* not NO_UNDERSCORES */
  40
  41 /* Assembler pseudos to introduce constants of various size.  */
  42
  43 #define ASM_BYTE_OP "\t.byte"
  44 #define ASM_SHORT "\t.word"
  45 #define ASM_LONG "\t.long"
  46 #define ASM_DOUBLE "\t.double"
  47
  48 /* Output at beginning of assembler file.
  49    ??? I am skeptical of this -- RMS.  */
  50
  51 #define ASM_FILE_START(FILE) \
  52   do {  fprintf (FILE, "\t.file\t");                            \
  53         output_quoted_string (FILE, dump_base_name);            \
  54         fprintf (FILE, "\n");                                   \
  55   } while (0)
  56
  57 /* This was suggested, but it shouldn't be right for DBX output. -- RMS
  58    #define ASM_OUTPUT_SOURCE_FILENAME(FILE, NAME) */
  59
  60 \f
  61 /* Define the syntax of labels and symbol definitions/declarations.  */
  62
  63 /* This is how to output an assembler line
  64    that says to advance the location counter by SIZE bytes.  */
  65
  66 #define ASM_OUTPUT_SKIP(FILE,SIZE)  \
  67   fprintf (FILE, "\t.space %u\n", (SIZE))
  68 \f
  69 /* Define the syntax of labels and symbol definitions/declarations.  */
  70
  71 /* This says how to output an assembler line
  72    to define a global common symbol.  */
  73
  74 #define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED)  \
  75 ( fputs (".comm ", (FILE)),                     \
  76   assemble_name ((FILE), (NAME)),               \
  77   fprintf ((FILE), ",%u\n", (ROUNDED)))
  78
  79 /* This says how to output an assembler line
  80    to define a local common symbol.  */
  81
  82 #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED)  \
  83 ( fputs (".lcomm ", (FILE)),                    \
  84   assemble_name ((FILE), (NAME)),               \
  85   fprintf ((FILE), ",%u\n", (ROUNDED)))
  86
  87 /* This is how to output an assembler line
  88    that says to advance the location counter
  89    to a multiple of 2**LOG bytes.  */
  90
  91 #define ASM_OUTPUT_ALIGN(FILE,LOG)      \
  92   if ((LOG)!=0) fprintf ((FILE), "\t.align %d\n", (LOG))
  93
  94 /* This is how to store into the string BUF
  95    the symbol_ref name of an internal numbered label where
  96    PREFIX is the class of label and NUM is the number within the class.
  97    This is suitable for output with `assemble_name'.  */
  98
  99 #ifdef NO_UNDERSCORES
 100 #define ASM_GENERATE_INTERNAL_LABEL(BUF,PREFIX,NUMBER)  \
 101     sprintf ((BUF), "*.%s%d", (PREFIX), (NUMBER))
 102 #else
 103 #define ASM_GENERATE_INTERNAL_LABEL(BUF,PREFIX,NUMBER)  \
 104     sprintf ((BUF), "*%s%d", (PREFIX), (NUMBER))
 105 #endif
 106
 107 /* This is how to output an internal numbered label where
 108    PREFIX is the class of label and NUM is the number within the class.  */
 109
 110 #ifdef NO_UNDERSCORES
 111 #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM)      \
 112   fprintf (FILE, ".%s%d:\n", PREFIX, NUM)
 113 #else
 114 #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM)      \
 115   fprintf (FILE, "%s%d:\n", PREFIX, NUM)
 116 #endif
 117
 118 /* The prefix to add to user-visible assembler symbols. */
 119
 120 #ifdef NO_UNDERSCORES
 121 #define USER_LABEL_PREFIX ""
 122 #else
 123 #define USER_LABEL_PREFIX "_"
 124 #endif /* not NO_UNDERSCORES */
 125
 126 /* Sequent has some changes in the format of DBX symbols.  */
 127 #define DBX_NO_XREFS 1
 128
 129 /* Don't split DBX symbols into continuations.  */
 130 #define DBX_CONTIN_LENGTH 0