OpenCores
URL https://opencores.org/ocsvn/openrisc_me/openrisc_me/trunk

Subversion Repositories openrisc_me

[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [config/] [i386/] [gas.h] - Blame information for rev 282

Details | Compare with Previous | View Log

Line No. Rev Author Line
1 282 jeremybenn
/* Definitions for Intel 386 using GAS.
2
   Copyright (C) 1988, 1993, 1994, 1996, 2002, 2004, 2007, 2008
3
   Free Software Foundation, Inc.
4
 
5
This file is part of GCC.
6
 
7
GCC is free software; you can redistribute it and/or modify
8
it under the terms of the GNU General Public License as published by
9
the Free Software Foundation; either version 3, or (at your option)
10
any later version.
11
 
12
GCC is distributed in the hope that it will be useful,
13
but WITHOUT ANY WARRANTY; without even the implied warranty of
14
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15
GNU General Public License for more details.
16
 
17
You should have received a copy of the GNU General Public License
18
along with GCC; see the file COPYING3.  If not see
19
<http://www.gnu.org/licenses/>.  */
20
 
21
/* Note that i386/seq-gas.h is a GAS configuration that does not use this
22
   file.  */
23
 
24
/* Use the bsd assembler syntax.  */
25
/* we need to do this because gas is really a bsd style assembler,
26
 * and so doesn't work well this these att-isms:
27
 *
28
 *  ASM_OUTPUT_SKIP is .set .,.+N, which isn't implemented in gas
29
 *  ASM_OUTPUT_LOCAL is done with .set .,.+N, but that can't be
30
 *   used to define bss static space
31
 *
32
 * Next is the question of whether to uses underscores.  RMS didn't
33
 * like this idea at first, but since it is now obvious that we
34
 * need this separate tm file for use with gas, at least to get
35
 * dbx debugging info, I think we should also switch to underscores.
36
 * We can keep i386v for real att style output, and the few
37
 * people who want both form will have to compile twice.
38
 */
39
 
40
/* these come from i386/bsd.h, but are specific to sequent */
41
#undef DBX_NO_XREFS
42
#undef DBX_CONTIN_LENGTH
43
 
44
/* Ask for COFF symbols.  */
45
 
46
#define SDB_DEBUGGING_INFO 1
47
 
48
/* Output #ident as a .ident.  */
49
 
50
#define ASM_OUTPUT_IDENT(FILE, NAME) fprintf (FILE, "\t.ident \"%s\"\n", NAME);
51
 
52
/* In the past there was confusion as to what the argument to .align was
53
   in GAS.  For the last several years the rule has been this: for a.out
54
   file formats that argument is LOG, and for all other file formats the
55
   argument is 1<<LOG.
56
 
57
   However, GAS now has .p2align and .balign pseudo-ops so to remove any
58
   doubt or guess work, and since this file is used for both a.out and other
59
   file formats, we use one of them.  */
60
 
61
#ifdef HAVE_GAS_BALIGN_AND_P2ALIGN 
62
#undef ASM_OUTPUT_ALIGN
63
#define ASM_OUTPUT_ALIGN(FILE,LOG) \
64
  if ((LOG)!=0) fprintf ((FILE), "\t.balign %d\n", 1<<(LOG))
65
#endif
66
 
67
/* A C statement to output to the stdio stream FILE an assembler
68
   command to advance the location counter to a multiple of 1<<LOG
69
   bytes if it is within MAX_SKIP bytes.
70
 
71
   This is used to align code labels according to Intel recommendations.  */
72
 
73
#ifdef HAVE_GAS_MAX_SKIP_P2ALIGN
74
#  define ASM_OUTPUT_MAX_SKIP_ALIGN(FILE,LOG,MAX_SKIP) \
75
     if ((LOG) != 0) {\
76
       if ((MAX_SKIP) == 0) fprintf ((FILE), "\t.p2align %d\n", (LOG)); \
77
       else fprintf ((FILE), "\t.p2align %d,,%d\n", (LOG), (MAX_SKIP)); \
78
     }
79
#endif
80
 
81
/* A C statement or statements which output an assembler instruction
82
   opcode to the stdio stream STREAM.  The macro-operand PTR is a
83
   variable of type `char *' which points to the opcode name in its
84
   "internal" form--the form that is written in the machine description.
85
 
86
   GAS version 1.38.1 doesn't understand the `repz' opcode mnemonic.
87
   So use `repe' instead.  */
88
 
89
#undef ASM_OUTPUT_OPCODE
90
#define ASM_OUTPUT_OPCODE(STREAM, PTR)  \
91
{                                                                       \
92
  if ((PTR)[0] == 'r'                                                    \
93
      && (PTR)[1] == 'e'                                                \
94
      && (PTR)[2] == 'p')                                               \
95
    {                                                                   \
96
      if ((PTR)[3] == 'z')                                              \
97
        {                                                               \
98
          fputs ("repe", (STREAM));                                     \
99
          (PTR) += 4;                                                   \
100
        }                                                               \
101
      else if ((PTR)[3] == 'n' && (PTR)[4] == 'z')                      \
102
        {                                                               \
103
          fputs ("repne", (STREAM));                                    \
104
          (PTR) += 5;                                                   \
105
        }                                                               \
106
    }                                                                   \
107
  else                                                                  \
108
    ASM_OUTPUT_AVX_PREFIX ((STREAM), (PTR));                            \
109
}
110
 
111
/* Define macro used to output shift-double opcodes when the shift
112
   count is in %cl.  Some assemblers require %cl as an argument;
113
   some don't.
114
 
115
   GAS requires the %cl argument, so override i386/unix.h.  */
116
 
117
#undef SHIFT_DOUBLE_OMITS_COUNT
118
#define SHIFT_DOUBLE_OMITS_COUNT 0
119
 
120
/* The comment-starter string as GAS expects it. */
121
#undef ASM_COMMENT_START
122
#define ASM_COMMENT_START "#"
123
 
124
#define TARGET_ASM_FILE_START_FILE_DIRECTIVE true

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.