source: rtems/cpukit/score/cpu/mips64orion/asm.h @ 270e3cc

4.104.114.84.95
Last change on this file since 270e3cc was db903c74, checked in by Joel Sherrill <joel.sherrill@…>, on 02/19/99 at 23:32:51

Moved asm.h back up in tree.

  • Property mode set to 100644
File size: 2.3 KB
Line 
1/*  asm.h
2 *
3 *  This include file attempts to address the problems
4 *  caused by incompatible flavors of assemblers and
5 *  toolsets.  It primarily addresses variations in the
6 *  use of leading underscores on symbols and the requirement
7 *  that register names be preceded by a %.
8 *
9 *
10 *  NOTE: The spacing in the use of these macros
11 *        is critical to them working as advertised.
12 *
13 *  COPYRIGHT:
14 *
15 *  This file is based on similar code found in newlib available
16 *  from ftp.cygnus.com.  The file which was used had no copyright
17 *  notice.  This file is freely distributable as long as the source
18 *  of the file is noted.  This file is:
19 *
20 *  COPYRIGHT (c) 1994-1997.
21 *  On-Line Applications Research Corporation (OAR).
22 *
23 *  $Id$
24 */
25/* @(#)asm.h       03/15/96     1.1 */
26
27#ifndef __NO_CPU_ASM_h
28#define __NO_CPU_ASM_h
29
30/*
31 *  Indicate we are in an assembly file and get the basic CPU definitions.
32 */
33
34#ifndef ASM
35#define ASM
36#endif
37#include <rtems/score/targopts.h>
38#include <rtems/score/mips64orion.h>
39
40/*
41 *  Recent versions of GNU cpp define variables which indicate the
42 *  need for underscores and percents.  If not using GNU cpp or
43 *  the version does not support this, then you will obviously
44 *  have to define these as appropriate.
45 */
46
47#ifndef __USER_LABEL_PREFIX__
48#define __USER_LABEL_PREFIX__ _
49#endif
50
51#ifndef __REGISTER_PREFIX__
52#define __REGISTER_PREFIX__
53#endif
54
55/* ANSI concatenation macros.  */
56
57#define CONCAT1(a, b) CONCAT2(a, b)
58#define CONCAT2(a, b) a ## b
59
60/* Use the right prefix for global labels.  */
61
62#define SYM(x) CONCAT1 (__USER_LABEL_PREFIX__, x)
63
64/* Use the right prefix for registers.  */
65
66#define REG(x) CONCAT1 (__REGISTER_PREFIX__, x)
67
68/*
69 *  define macros for all of the registers on this CPU
70 *
71 *  EXAMPLE:     #define d0 REG (d0)
72 */
73
74/*
75 *  Define macros to handle section beginning and ends.
76 */
77
78
79#define BEGIN_CODE_DCL .text
80#define END_CODE_DCL
81#define BEGIN_DATA_DCL .data
82#define END_DATA_DCL
83#define BEGIN_CODE .text
84#define END_CODE
85#define BEGIN_DATA
86#define END_DATA
87#define BEGIN_BSS
88#define END_BSS
89#define END
90
91/*
92 *  Following must be tailor for a particular flavor of the C compiler.
93 *  They may need to put underscores in front of the symbols.
94 */
95
96#define PUBLIC(sym) .globl SYM (sym)
97#define EXTERN(sym) .globl SYM (sym)
98
99#endif
100/* end of include file */
101
102
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