1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
|
/* Definitions for Intel 386 using GAS.
Copyright (C) 1988, 1993, 1994, 1996, 2002 Free Software Foundation, Inc.
This file is part of GNU CC.
GNU CC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GNU CC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU CC; see the file COPYING. If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
/* Note that i386/seq-gas.h is a GAS configuration that does not use this
file. */
/* Use the bsd assembler syntax. */
/* we need to do this because gas is really a bsd style assembler,
* and so doesn't work well this these att-isms:
*
* ASM_OUTPUT_SKIP is .set .,.+N, which isn't implemented in gas
* ASM_OUTPUT_LOCAL is done with .set .,.+N, but that can't be
* used to define bss static space
*
* Next is the question of whether to uses underscores. RMS didn't
* like this idea at first, but since it is now obvious that we
* need this separate tm file for use with gas, at least to get
* dbx debugging info, I think we should also switch to underscores.
* We can keep i386v for real att style output, and the few
* people who want both form will have to compile twice.
*/
/* these come from i386/bsd.h, but are specific to sequent */
#undef DBX_NO_XREFS
#undef DBX_CONTIN_LENGTH
/* Ask for COFF symbols. */
#define SDB_DEBUGGING_INFO 1
/* Output #ident as a .ident. */
#define ASM_OUTPUT_IDENT(FILE, NAME) fprintf (FILE, "\t.ident \"%s\"\n", NAME);
/* Implicit library calls should use memcpy, not bcopy, etc. */
#define TARGET_MEM_FUNCTIONS
/* In the past there was confusion as to what the argument to .align was
in GAS. For the last several years the rule has been this: for a.out
file formats that argument is LOG, and for all other file formats the
argument is 1<<LOG.
However, GAS now has .p2align and .balign pseudo-ops so to remove any
doubt or guess work, and since this file is used for both a.out and other
file formats, we use one of them. */
#ifdef HAVE_GAS_BALIGN_AND_P2ALIGN
#undef ASM_OUTPUT_ALIGN
#define ASM_OUTPUT_ALIGN(FILE,LOG) \
if ((LOG)!=0) fprintf ((FILE), "\t.balign %d\n", 1<<(LOG))
#endif
/* A C statement to output to the stdio stream FILE an assembler
command to advance the location counter to a multiple of 1<<LOG
bytes if it is within MAX_SKIP bytes.
This is used to align code labels according to Intel recommendations. */
#ifdef HAVE_GAS_MAX_SKIP_P2ALIGN
# define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE,LOG,MAX_SKIP) \
if ((LOG) != 0) {\
if ((MAX_SKIP) == 0) fprintf ((FILE), "\t.p2align %d\n", (LOG)); \
else fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \
}
#endif
/* A C statement or statements which output an assembler instruction
opcode to the stdio stream STREAM. The macro-operand PTR is a
variable of type `char *' which points to the opcode name in its
"internal" form--the form that is written in the machine description.
GAS version 1.38.1 doesn't understand the `repz' opcode mnemonic.
So use `repe' instead. */
#define ASM_OUTPUT_OPCODE(STREAM, PTR) \
{ \
if ((PTR)[0] == 'r' \
&& (PTR)[1] == 'e' \
&& (PTR)[2] == 'p') \
{ \
if ((PTR)[3] == 'z') \
{ \
fprintf (STREAM, "repe"); \
(PTR) += 4; \
} \
else if ((PTR)[3] == 'n' && (PTR)[4] == 'z') \
{ \
fprintf (STREAM, "repne"); \
(PTR) += 5; \
} \
} \
}
/* Define macro used to output shift-double opcodes when the shift
count is in %cl. Some assemblers require %cl as an argument;
some don't.
GAS requires the %cl argument, so override i386/unix.h. */
#undef SHIFT_DOUBLE_OMITS_COUNT
#define SHIFT_DOUBLE_OMITS_COUNT 0
/* Print opcodes the way that GAS expects them. */
#define GAS_MNEMONICS 1
/* Output at beginning of assembler file. */
/* The .file command should always begin the output. */
#undef ASM_FILE_START
#define ASM_FILE_START(FILE) \
do { \
if (ix86_asm_dialect == ASM_INTEL) \
fputs ("\t.intel_syntax\n", FILE); \
output_file_directive (FILE, main_input_filename); \
} while (0)
|