source: rtems/c/src/exec/score/cpu/m68k/asm.h @ c701f197

4.104.114.84.95
Last change on this file since c701f197 was 5e9b32b, checked in by Joel Sherrill <joel.sherrill@…>, on 09/26/95 at 19:27:15

posix support initially added

  • Property mode set to 100644
File size: 2.7 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#define ASM
34#include <rtems/score/m68k.h>
35
36/*
37 *  Recent versions of GNU cpp define variables which indicate the
38 *  need for underscores and percents.  If not using GNU cpp or
39 *  the version does not support this, then you will obviously
40 *  have to define these as appropriate.
41 */
42
43#ifndef __USER_LABEL_PREFIX__
44#define __USER_LABEL_PREFIX__ _
45#endif
46
47#ifndef __REGISTER_PREFIX__
48#define __REGISTER_PREFIX__
49#endif
50
51/* ANSI concatenation macros.  */
52
53#define CONCAT1(a, b) CONCAT2(a, b)
54#define CONCAT2(a, b) a ## b
55
56/* Use the right prefix for global labels.  */
57
58#define SYM(x) CONCAT1 (__USER_LABEL_PREFIX__, x)
59
60/* Use the right prefix for registers.  */
61
62#define REG(x) CONCAT1 (__REGISTER_PREFIX__, x)
63
64#define d0 REG (d0)
65#define d1 REG (d1)
66#define d2 REG (d2)
67#define d3 REG (d3)
68#define d4 REG (d4)
69#define d5 REG (d5)
70#define d6 REG (d6)
71#define d7 REG (d7)
72#define a0 REG (a0)
73#define a1 REG (a1)
74#define a2 REG (a2)
75#define a3 REG (a3)
76#define a4 REG (a4)
77#define a5 REG (a5)
78#define a6 REG (a6)
79#define a7 REG (a7)
80
81#define msp REG (msp)
82#define usp REG (usp)
83#define isp REG (isp)
84#define sr REG (sr)
85
86#define fp0 REG (fp0)
87#define fp1 REG (fp1)
88#define fp2 REG (fp2)
89#define fp3 REG (fp3)
90#define fp4 REG (fp4)
91#define fp5 REG (fp5)
92#define fp6 REG (fp6)
93#define fp7 REG (fp7)
94
95#define fpc REG (fpc)
96#define fpi REG (fpi)
97#define fps REG (fps)
98
99/*
100 *  Define macros to handle section beginning and ends.
101 */
102
103
104#define BEGIN_CODE_DCL .text
105#define END_CODE_DCL
106#define BEGIN_DATA_DCL .data
107#define END_DATA_DCL
108#define BEGIN_CODE .text
109#define END_CODE
110#define BEGIN_DATA
111#define END_DATA
112#define BEGIN_BSS
113#define END_BSS
114#define END
115
116/*
117 *  Following must be tailor for a particular flavor of the C compiler.
118 *  They may need to put underscores in front of the symbols.
119 */
120
121#define PUBLIC(sym) .globl SYM (sym)
122#define EXTERN(sym) .globl SYM (sym)
123
124#endif
125/* end of include file */
126
127
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