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1.1 root 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:
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, 675 Mass Ave, Cambridge, MA 02139, USA. */
21:
22: /* Include common aspects of all 386 Unix assemblers. */
23: #include "i386/unix.h"
24:
25: /* Use the Sequent Symmetry assembler syntax. */
26:
27: #define TARGET_VERSION fprintf (stderr, " (80386, BSD syntax)");
28:
29: /* Define the syntax of pseudo-ops, labels and comments. */
30:
31: /* Prefix for internally generated assembler labels. If we aren't using
32: underscores, we are using prefix `.'s to identify labels that should
33: be ignored, as in `i386/gas.h' [email protected] */
34: #ifdef NO_UNDERSCORES
35: #define LPREFIX ".L"
36: #else
37: #define LPREFIX "L"
38: #endif /* not NO_UNDERSCORES */
39:
40: /* Assembler pseudos to introduce constants of various size. */
41:
42: #define ASM_BYTE_OP "\t.byte"
43: #define ASM_SHORT "\t.word"
44: #define ASM_LONG "\t.long"
45: #define ASM_DOUBLE "\t.double"
46:
47: /* Output at beginning of assembler file.
48: ??? I am skeptical of this -- RMS. */
49:
50: #define ASM_FILE_START(FILE) \
51: do { fprintf (FILE, "\t.file\t"); \
52: output_quoted_string (FILE, dump_base_name); \
53: fprintf (FILE, "\n"); \
54: } while (0)
55:
56: /* This was suggested, but it shouldn't be right for DBX output. -- RMS
57: #define ASM_OUTPUT_SOURCE_FILENAME(FILE, NAME) */
58:
59:
60: /* Define the syntax of labels and symbol definitions/declarations. */
61:
62: /* This is how to output an assembler line
63: that says to advance the location counter by SIZE bytes. */
64:
65: #define ASM_OUTPUT_SKIP(FILE,SIZE) \
66: fprintf (FILE, "\t.space %u\n", (SIZE))
67:
68: /* Define the syntax of labels and symbol definitions/declarations. */
69:
70: /* This says how to output an assembler line
71: to define a global common symbol. */
72:
73: #define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED) \
74: ( fputs (".comm ", (FILE)), \
75: assemble_name ((FILE), (NAME)), \
76: fprintf ((FILE), ",%u\n", (ROUNDED)))
77:
78: /* This says how to output an assembler line
79: to define a local common symbol. */
80:
81: #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED) \
82: ( fputs (".lcomm ", (FILE)), \
83: assemble_name ((FILE), (NAME)), \
84: fprintf ((FILE), ",%u\n", (ROUNDED)))
85:
86: /* This is how to output an assembler line
87: that says to advance the location counter
88: to a multiple of 2**LOG bytes. */
89:
90: #define ASM_OUTPUT_ALIGN(FILE,LOG) \
91: if ((LOG)!=0) fprintf ((FILE), "\t.align %d\n", (LOG))
92:
93: /* This is how to store into the string BUF
94: the symbol_ref name of an internal numbered label where
95: PREFIX is the class of label and NUM is the number within the class.
96: This is suitable for output with `assemble_name'. */
97:
98: #ifdef NO_UNDERSCORES
99: #define ASM_GENERATE_INTERNAL_LABEL(BUF,PREFIX,NUMBER) \
100: sprintf ((BUF), "*.%s%d", (PREFIX), (NUMBER))
101: #else
102: #define ASM_GENERATE_INTERNAL_LABEL(BUF,PREFIX,NUMBER) \
103: sprintf ((BUF), "*%s%d", (PREFIX), (NUMBER))
104: #endif
105:
106: /* This is how to output an internal numbered label where
107: PREFIX is the class of label and NUM is the number within the class. */
108:
109: #ifdef NO_UNDERSCORES
110: #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM) \
111: fprintf (FILE, ".%s%d:\n", PREFIX, NUM)
112: #else
113: #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM) \
114: fprintf (FILE, "%s%d:\n", PREFIX, NUM)
115: #endif
116:
117: /* This is how to output a reference to a user-level label named NAME. */
118:
119: #ifdef NO_UNDERSCORES
120: #define ASM_OUTPUT_LABELREF(FILE,NAME) fprintf (FILE, "%s", NAME)
121: #else
122: #define ASM_OUTPUT_LABELREF(FILE,NAME) fprintf (FILE, "_%s", NAME)
123: #endif /* not NO_UNDERSCORES */
124:
125: /* Sequent has some changes in the format of DBX symbols. */
126: #define DBX_NO_XREFS 1
127:
128: /* Don't split DBX symbols into continuations. */
129: #define DBX_CONTIN_LENGTH 0
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