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, 2000 Free Software Foundation, Inc.
6 This file is part of GNU CC.
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)
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.
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. */
23 /* Include common aspects of all 386 Unix assemblers. */
24 #include "i386/unix.h"
26 /* Use the Sequent Symmetry assembler syntax. */
28 #define TARGET_VERSION fprintf (stderr, " (80386, BSD syntax)");
30 /* Define the syntax of pseudo-ops, labels and comments. */
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 */
39 #endif /* not NO_UNDERSCORES */
41 /* Assembler pseudos to introduce constants of various size. */
43 #define ASM_BYTE_OP "\t.byte\t"
44 #define ASM_SHORT "\t.word\t"
45 #define ASM_LONG "\t.long\t"
46 #define ASM_QUAD "\t.quad\t" /* Should not be used for 32bit compilation. */
48 /* Output at beginning of assembler file.
49 ??? I am skeptical of this -- RMS. */
51 #define ASM_FILE_START(FILE) \
52 do { output_file_directive (FILE, main_input_filename); \
55 /* This was suggested, but it shouldn't be right for DBX output. -- RMS
56 #define ASM_OUTPUT_SOURCE_FILENAME(FILE, NAME) */
59 /* Define the syntax of labels and symbol definitions/declarations. */
61 /* This is how to output an assembler line
62 that says to advance the location counter by SIZE bytes. */
64 #define ASM_OUTPUT_SKIP(FILE,SIZE) \
65 fprintf (FILE, "\t.space %u\n", (SIZE))
67 /* Define the syntax of labels and symbol definitions/declarations. */
69 /* This says how to output an assembler line
70 to define a global common symbol. */
72 #define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED) \
73 ( fputs (".comm ", (FILE)), \
74 assemble_name ((FILE), (NAME)), \
75 fprintf ((FILE), ",%u\n", (ROUNDED)))
77 /* This says how to output an assembler line
78 to define a local common symbol. */
80 #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED) \
81 ( fputs (".lcomm ", (FILE)), \
82 assemble_name ((FILE), (NAME)), \
83 fprintf ((FILE), ",%u\n", (ROUNDED)))
85 /* This is how to output an assembler line
86 that says to advance the location counter
87 to a multiple of 2**LOG bytes. */
89 #define ASM_OUTPUT_ALIGN(FILE,LOG) \
90 if ((LOG)!=0) fprintf ((FILE), "\t.align %d\n", (LOG))
92 /* This is how to store into the string BUF
93 the symbol_ref name of an internal numbered label where
94 PREFIX is the class of label and NUM is the number within the class.
95 This is suitable for output with `assemble_name'. */
98 #define ASM_GENERATE_INTERNAL_LABEL(BUF,PREFIX,NUMBER) \
99 sprintf ((BUF), "*.%s%d", (PREFIX), (NUMBER))
101 #define ASM_GENERATE_INTERNAL_LABEL(BUF,PREFIX,NUMBER) \
102 sprintf ((BUF), "*%s%d", (PREFIX), (NUMBER))
105 /* This is how to output an internal numbered label where
106 PREFIX is the class of label and NUM is the number within the class. */
108 #ifdef NO_UNDERSCORES
109 #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM) \
110 fprintf (FILE, ".%s%d:\n", PREFIX, NUM)
112 #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM) \
113 fprintf (FILE, "%s%d:\n", PREFIX, NUM)
116 /* The prefix to add to user-visible assembler symbols. */
118 #ifdef NO_UNDERSCORES
119 #define USER_LABEL_PREFIX ""
121 #define USER_LABEL_PREFIX "_"
122 #endif /* not NO_UNDERSCORES */
124 /* Sequent has some changes in the format of DBX symbols. */
125 #define DBX_NO_XREFS 1
127 /* Don't split DBX symbols into continuations. */
128 #define DBX_CONTIN_LENGTH 0