source: rtems/cpukit/score/cpu/m68k/rtems/asm.h @ 7111268

4.104.114.84.95
Last change on this file since 7111268 was 7f70d1b7, checked in by Ralf Corsepius <ralf.corsepius@…>, on Jan 28, 2005 at 3:56:09 PM

New header guard.

  • Property mode set to 100644
File size: 3.1 KB
Line 
1/**
2 * @file rtems/asm.h
3 *
4 *  This include file attempts to address the problems
5 *  caused by incompatible flavors of assemblers and
6 *  toolsets.  It primarily addresses variations in the
7 *  use of leading underscores on symbols and the requirement
8 *  that register names be preceded by a %.
9 */
10
11/*
12 *  NOTE: The spacing in the use of these macros
13 *        is critical to them working as advertised.
14 *
15 *  COPYRIGHT:
16 *
17 *  This file is based on similar code found in newlib available
18 *  from ftp.cygnus.com.  The file which was used had no copyright
19 *  notice.  This file is freely distributable as long as the source
20 *  of the file is noted.  This file is:
21 *
22 *  COPYRIGHT (c) 1994-1997.
23 *  On-Line Applications Research Corporation (OAR).
24 *
25 *  $Id$
26 */
27
28#ifndef _RTEMS_ASM_H
29#define _RTEMS_ASM_H
30
31/*
32 *  Indicate we are in an assembly file and get the basic CPU definitions.
33 */
34
35#ifndef ASM
36#define ASM
37#endif
38#include <rtems/score/cpuopts.h>
39#include <rtems/score/cpu.h>
40
41/*
42 *  Recent versions of GNU cpp define variables which indicate the
43 *  need for underscores and percents.  If not using GNU cpp or
44 *  the version does not support this, then you will obviously
45 *  have to define these as appropriate.
46 */
47
48#ifndef __USER_LABEL_PREFIX__
49#define __USER_LABEL_PREFIX__ _
50#endif
51
52#ifndef __REGISTER_PREFIX__
53#define __REGISTER_PREFIX__
54#endif
55
56/* ANSI concatenation macros.  */
57
58#define CONCAT1(a, b) CONCAT2(a, b)
59#define CONCAT2(a, b) a ## b
60
61#define EVAL(x) x
62#define CONCAT0(a, b) EVAL(a)EVAL(b)
63
64/* Use the right prefix for global labels.  */
65
66#define SYM(x) CONCAT0 (__USER_LABEL_PREFIX__, x)
67
68/* Use the right prefix for registers.  */
69
70#define REG(x) CONCAT0 (__REGISTER_PREFIX__, x)
71
72#define d0 REG (d0)
73#define d1 REG (d1)
74#define d2 REG (d2)
75#define d3 REG (d3)
76#define d4 REG (d4)
77#define d5 REG (d5)
78#define d6 REG (d6)
79#define d7 REG (d7)
80#define a0 REG (a0)
81#define a1 REG (a1)
82#define a2 REG (a2)
83#define a3 REG (a3)
84#define a4 REG (a4)
85#define a5 REG (a5)
86#define a6 REG (a6)
87#define a7 REG (a7)
88#define sp REG (sp)
89
90#define msp REG (msp)
91#define usp REG (usp)
92#define isp REG (isp)
93#define sr  REG (sr)
94#define vbr REG (vbr)
95#define dfc REG (dfc)
96#define sfc REG (sfc)
97
98/* mcf52xx special regs */
99#define cacr    REG (cacr)
100#define acr0    REG (acr0)
101#define acr1    REG (acr1)
102#define rambar0 REG (rambar0)
103#define mbar    REG (mbar)
104
105
106#define fp0 REG (fp0)
107#define fp1 REG (fp1)
108#define fp2 REG (fp2)
109#define fp3 REG (fp3)
110#define fp4 REG (fp4)
111#define fp5 REG (fp5)
112#define fp6 REG (fp6)
113#define fp7 REG (fp7)
114
115#define fpc REG (fpc)
116#define fpi REG (fpi)
117#define fps REG (fps)
118#define fpsr REG (fpsr)
119
120
121/*
122 *  Define macros to handle section beginning and ends.
123 */
124
125
126#define BEGIN_CODE_DCL .text
127#define END_CODE_DCL
128#define BEGIN_DATA_DCL .data
129#define END_DATA_DCL
130#define BEGIN_CODE .text
131#define END_CODE
132#define BEGIN_DATA .data
133#define END_DATA
134#define BEGIN_BSS .bss
135#define END_BSS
136#define END
137
138/*
139 *  Following must be tailor for a particular flavor of the C compiler.
140 *  They may need to put underscores in front of the symbols.
141 */
142
143#define PUBLIC(sym) .globl SYM (sym)
144#define EXTERN(sym) .globl SYM (sym)
145
146#endif
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