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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 "unx386.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:
1.1.1.2 ! root 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 `i386gas.h' [email protected] */
! 34: #ifdef NO_UNDERSCORES
! 35: #define LPREFIX ".L"
! 36: #else
1.1 root 37: #define LPREFIX "L"
1.1.1.2 ! root 38: #endif /* not NO_UNDERSCORES */
1.1 root 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: fprintf (FILE, "\t.file\t\"%s\"\n", dump_base_name);
52:
53: /* This was suggested, but it shouldn't be right for DBX output. -- RMS
54: #define ASM_OUTPUT_SOURCE_FILENAME(FILE, NAME) */
55:
56:
57: /* Define the syntax of labels and symbol definitions/declarations. */
58:
59: /* This is how to output an assembler line
60: that says to advance the location counter by SIZE bytes. */
61:
62: #define ASM_OUTPUT_SKIP(FILE,SIZE) \
63: fprintf (FILE, "\t.space %u\n", (SIZE))
64:
65: /* Define the syntax of labels and symbol definitions/declarations. */
66:
67: /* This says how to output an assembler line
68: to define a global common symbol. */
69:
70: #define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED) \
71: ( fputs (".comm ", (FILE)), \
72: assemble_name ((FILE), (NAME)), \
73: fprintf ((FILE), ",%u\n", (ROUNDED)))
74:
75: /* This says how to output an assembler line
76: to define a local common symbol. */
77:
78: #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED) \
79: ( fputs (".lcomm ", (FILE)), \
80: assemble_name ((FILE), (NAME)), \
81: fprintf ((FILE), ",%u\n", (ROUNDED)))
82:
83: /* This is how to output an assembler line
84: that says to advance the location counter
85: to a multiple of 2**LOG bytes. */
86:
87: #define ASM_OUTPUT_ALIGN(FILE,LOG) \
88: if ((LOG)!=0) fprintf ((FILE), "\t.align %d\n", (LOG))
89:
90: /* This is how to store into the string BUF
91: the symbol_ref name of an internal numbered label where
92: PREFIX is the class of label and NUM is the number within the class.
93: This is suitable for output with `assemble_name'. */
94:
95: #define ASM_GENERATE_INTERNAL_LABEL(BUF,PREFIX,NUMBER) \
96: sprintf ((BUF), "*%s%d", (PREFIX), (NUMBER))
97:
98: /* This is how to output an internal numbered label where
99: PREFIX is the class of label and NUM is the number within the class. */
100:
101: #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM) \
102: fprintf (FILE, "%s%d:\n", PREFIX, NUM)
103:
104: /* This is how to output a reference to a user-level label named NAME. */
105:
1.1.1.2 ! root 106: #ifdef NO_UNDERSCORES
! 107: #define ASM_OUTPUT_LABELREF(FILE,NAME) fprintf (FILE, "%s", NAME)
! 108: #else
! 109: #define ASM_OUTPUT_LABELREF(FILE,NAME) fprintf (FILE, "_%s", NAME)
! 110: #endif /* not NO_UNDERSCORES */
1.1 root 111:
112: /* Sequent has some changes in the format of DBX symbols. */
113: #define DBX_NO_XREFS 1
114:
115: /* Don't split DBX symbols into continuations. */
116: #define DBX_CONTIN_LENGTH 0
117:
118: /* This is how to output an assembler line defining a `double' constant. */
119:
120: #undef ASM_OUTPUT_DOUBLE
121: #define ASM_OUTPUT_DOUBLE(FILE,VALUE) \
122: fprintf (FILE, "\t.double 0d%.20e\n", (VALUE))
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