bsd.h revision 18334 
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 Free Software Foundation, Inc.
5
6This file is part of GNU CC.
7
8GNU CC is free software; you can redistribute it and/or modify
9it under the terms of the GNU General Public License as published by
10the Free Software Foundation; either version 2, or (at your option)
11any later version.
12
13GNU CC is distributed in the hope that it will be useful,
14but WITHOUT ANY WARRANTY; without even the implied warranty of
15MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16GNU General Public License for more details.
17
18You should have received a copy of the GNU General Public License
19along with GNU CC; see the file COPYING.  If not, write to
20the Free Software Foundation, 59 Temple Place - Suite 330,
21Boston, 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
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
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
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/* This is how to output a reference to a user-level label named NAME.  */
119
120#ifdef NO_UNDERSCORES
121#define ASM_OUTPUT_LABELREF(FILE,NAME) fprintf (FILE, "%s", NAME)
122#else
123#define ASM_OUTPUT_LABELREF(FILE,NAME) fprintf (FILE, "_%s", NAME)
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
131