source: rtems/c/src/exec/score/cpu/m68k/asm.h @ 12d6f14

4.104.114.84.9
Last change on this file since 12d6f14 was 12d6f14, checked in by Joel Sherrill <joel.sherrill@…>, on Apr 7, 1997 at 9:22:15 PM

added "ifndef" to avoid redefinition warning.

  • Property mode set to 100644
File size: 2.8 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.
21 *  On-Line Applications Research Corporation (OAR).
22 *
23 *  $Id$
24 */
25
26#ifndef __M68k_ASM_h
27#define __M68k_ASM_h
28
29/*
30 *  Indicate we are in an assembly file and get the basic CPU definitions.
31 */
32
33#ifndef ASM
34#define ASM
35#endif
36#include <rtems/score/targopts.h>
37#include <rtems/score/cpu.h>
38
39/*
40 *  Recent versions of GNU cpp define variables which indicate the
41 *  need for underscores and percents.  If not using GNU cpp or
42 *  the version does not support this, then you will obviously
43 *  have to define these as appropriate.
44 */
45
46#ifndef __USER_LABEL_PREFIX__
47#define __USER_LABEL_PREFIX__ _
48#endif
49
50#ifndef __REGISTER_PREFIX__
51#define __REGISTER_PREFIX__
52#endif
53
54/* ANSI concatenation macros.  */
55
56#define CONCAT1(a, b) CONCAT2(a, b)
57#define CONCAT2(a, b) a ## b
58
59/* Use the right prefix for global labels.  */
60
61#define SYM(x) CONCAT1 (__USER_LABEL_PREFIX__, x)
62
63/* Use the right prefix for registers.  */
64
65#define REG(x) CONCAT1 (__REGISTER_PREFIX__, x)
66
67#define d0 REG (d0)
68#define d1 REG (d1)
69#define d2 REG (d2)
70#define d3 REG (d3)
71#define d4 REG (d4)
72#define d5 REG (d5)
73#define d6 REG (d6)
74#define d7 REG (d7)
75#define a0 REG (a0)
76#define a1 REG (a1)
77#define a2 REG (a2)
78#define a3 REG (a3)
79#define a4 REG (a4)
80#define a5 REG (a5)
81#define a6 REG (a6)
82#define a7 REG (a7)
83
84#define msp REG (msp)
85#define usp REG (usp)
86#define isp REG (isp)
87#define sr  REG (sr)
88#define vbr REG (vbr)
89#define dfc REG (dfc)
90
91#define fp0 REG (fp0)
92#define fp1 REG (fp1)
93#define fp2 REG (fp2)
94#define fp3 REG (fp3)
95#define fp4 REG (fp4)
96#define fp5 REG (fp5)
97#define fp6 REG (fp6)
98#define fp7 REG (fp7)
99
100#define fpc REG (fpc)
101#define fpi REG (fpi)
102#define fps REG (fps)
103
104/*
105 *  Define macros to handle section beginning and ends.
106 */
107
108
109#define BEGIN_CODE_DCL .text
110#define END_CODE_DCL
111#define BEGIN_DATA_DCL .data
112#define END_DATA_DCL
113#define BEGIN_CODE .text
114#define END_CODE
115#define BEGIN_DATA
116#define END_DATA
117#define BEGIN_BSS
118#define END_BSS
119#define END
120
121/*
122 *  Following must be tailor for a particular flavor of the C compiler.
123 *  They may need to put underscores in front of the symbols.
124 */
125
126#define PUBLIC(sym) .globl SYM (sym)
127#define EXTERN(sym) .globl SYM (sym)
128
129#endif
130/* end of include file */
131
132
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