source: rtems/cpukit/score/cpu/m68k/include/rtems/asm.h

Last change on this file was 0be1e54, checked in by Andreas Dachsberger <andreas.dachsberger@…>, on Mar 26, 2019 at 9:44:58 AM

doxygen: score: Add m68k CPU architecture group

Update #3706.

  • Property mode set to 100644
File size: 3.5 KB
Line 
1/**
2 * @file
3 *
4 * @brief Address the Problems Caused by Incompatible Flavor of
5 * Assemblers and Toolsets
6 *
7 * This include file attempts to address the problems
8 * caused by incompatible flavors of assemblers and
9 * toolsets.  It primarily addresses variations in the
10 * use of leading underscores on symbols and the requirement
11 * that register names be preceded by a %.
12 *
13 * NOTE: The spacing in the use of these macros
14 *       is critical to them working as advertised.
15 */
16
17/*
18 *  COPYRIGHT:
19 *
20 *  This file is based on similar code found in newlib available
21 *  from ftp.cygnus.com.  The file which was used had no copyright
22 *  notice.  This file is freely distributable as long as the source
23 *  of the file is noted.  This file is:
24 *
25 *  COPYRIGHT (c) 1994-1997.
26 *  On-Line Applications Research Corporation (OAR).
27 */
28
29#ifndef _RTEMS_ASM_H
30#define _RTEMS_ASM_H
31
32/*
33 *  Indicate we are in an assembly file and get the basic CPU definitions.
34 */
35
36#ifndef ASM
37#define ASM
38#endif
39#include <rtems/score/cpuopts.h>
40#include <rtems/score/cpu.h>
41
42/**
43 * @defgroup RTEMSScoreCPUm68kASM m68k Assembler Support
44 *
45 * @ingroup RTEMSScoreCPUm68k
46 *
47 * @brief Motorola 68000 and NXP ColdFire (m68k) Assembler Support
48 *
49 * @{
50 */
51
52/*
53 *  Recent versions of GNU cpp define variables which indicate the
54 *  need for underscores and percents.  If not using GNU cpp or
55 *  the version does not support this, then you will obviously
56 *  have to define these as appropriate.
57 */
58
59#ifndef __USER_LABEL_PREFIX__
60#define __USER_LABEL_PREFIX__ _
61#endif
62
63#ifndef __REGISTER_PREFIX__
64#define __REGISTER_PREFIX__
65#endif
66
67#include <rtems/concat.h>
68
69/* Use the right prefix for global labels.  */
70
71#define SYM(x) CONCAT0 (__USER_LABEL_PREFIX__, x)
72
73/* Use the right prefix for registers.  */
74
75#define REG(x) CONCAT0 (__REGISTER_PREFIX__, x)
76
77#define d0 REG (d0)
78#define d1 REG (d1)
79#define d2 REG (d2)
80#define d3 REG (d3)
81#define d4 REG (d4)
82#define d5 REG (d5)
83#define d6 REG (d6)
84#define d7 REG (d7)
85#define a0 REG (a0)
86#define a1 REG (a1)
87#define a2 REG (a2)
88#define a3 REG (a3)
89#define a4 REG (a4)
90#define a5 REG (a5)
91#define a6 REG (a6)
92#define a7 REG (a7)
93#define sp REG (sp)
94
95#define msp REG (msp)
96#define usp REG (usp)
97#define isp REG (isp)
98#define sr  REG (sr)
99#define vbr REG (vbr)
100#define dfc REG (dfc)
101#define sfc REG (sfc)
102
103/* mcf52xx special regs */
104#define cacr    REG (cacr)
105#define acr0    REG (acr0)
106#define acr1    REG (acr1)
107#define rambar0 REG (rambar0)
108#define mbar    REG (mbar)
109
110/* additional v4e special regs */
111#define rambar1   REG (rambar1)
112#define macsr     REG (macsr)
113#define acc0      REG (acc0)
114#define acc1      REG (acc1)
115#define acc2      REG (acc2)
116#define acc3      REG (acc3)
117#define accext01  REG (accext01)
118#define accext23  REG (accext23)
119#define mask      REG (mask)
120
121
122#define fp0 REG (fp0)
123#define fp1 REG (fp1)
124#define fp2 REG (fp2)
125#define fp3 REG (fp3)
126#define fp4 REG (fp4)
127#define fp5 REG (fp5)
128#define fp6 REG (fp6)
129#define fp7 REG (fp7)
130
131#define fpc REG (fpc)
132#define fpi REG (fpi)
133#define fps REG (fps)
134#define fpsr REG (fpsr)
135
136
137/*
138 *  Define macros to handle section beginning and ends.
139 */
140
141
142#define BEGIN_CODE_DCL .text
143#define END_CODE_DCL
144#define BEGIN_DATA_DCL .data
145#define END_DATA_DCL
146#define BEGIN_CODE .text
147#define END_CODE
148#define BEGIN_DATA .data
149#define END_DATA
150#define BEGIN_BSS .bss
151#define END_BSS
152#define END
153
154/*
155 *  Following must be tailor for a particular flavor of the C compiler.
156 *  They may need to put underscores in front of the symbols.
157 */
158
159#define PUBLIC(sym) .globl SYM (sym)
160#define EXTERN(sym) .globl SYM (sym)
161
162/** @} */
163
164#endif
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