source: rtems/cpukit/score/cpu/sh/rtems/asm.h @ c499856

4.115
Last change on this file since c499856 was c499856, checked in by Chris Johns <chrisj@…>, on Mar 20, 2014 at 9:10:47 PM

Change all references of rtems.com to rtems.org.

  • Property mode set to 100644
File size: 3.2 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 *  Authors: Ralf Corsepius (corsepiu@faw.uni-ulm.de) and
19 *           Bernd Becker (becker@faw.uni-ulm.de)
20 *
21 *  COPYRIGHT:
22 *
23 *  This file is based on similar code found in newlib available
24 *  from ftp.cygnus.com.  The file which was used had no copyright
25 *  notice.  This file is freely distributable as long as the source
26 *  of the file is noted.  This file is:
27 *
28 *
29 *  COPYRIGHT (c) 1997-1998, FAW Ulm, Germany
30 *
31 *  This program is distributed in the hope that it will be useful,
32 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
33 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
34 *
35 *
36 *  COPYRIGHT (c) 1998-2001.
37 *  On-Line Applications Research Corporation (OAR).
38 *
39 *  The license and distribution terms for this file may be
40 *  found in the file LICENSE in this distribution or at
41 *  http://www.rtems.org/license/LICENSE.
42 */
43
44#ifndef _RTEMS_ASM_H
45#define _RTEMS_ASM_H
46
47/*
48 *  Indicate we are in an assembly file and get the basic CPU definitions.
49 */
50
51#ifndef ASM
52#define ASM
53#endif
54
55#include <rtems/score/cpuopts.h>
56#include <rtems/score/sh.h>
57
58/*
59 *  Recent versions of GNU cpp define variables which indicate the
60 *  need for underscores and percents.  If not using GNU cpp or
61 *  the version does not support this, then you will obviously
62 *  have to define these as appropriate.
63 */
64
65#ifndef __USER_LABEL_PREFIX__
66#define __USER_LABEL_PREFIX__ _
67#endif
68
69#ifndef __REGISTER_PREFIX__
70#define __REGISTER_PREFIX__
71#endif
72
73#include <rtems/concat.h>
74
75/* Use the right prefix for global labels.  */
76
77#define SYM(x) CONCAT1 (__USER_LABEL_PREFIX__, x)
78
79/* Use the right prefix for registers.  */
80
81#define REG(x) CONCAT1 (__REGISTER_PREFIX__, x)
82
83/*
84 *  define macros for all of the registers on this CPU
85 *
86 *  EXAMPLE:     #define d0 REG (d0)
87 */
88#define r0 REG (r0)
89#define r1 REG (r1)
90#define r2 REG (r2)
91#define r3 REG (r3)
92#define r4 REG (r4)
93#define r5 REG (r5)
94#define r6 REG (r6)
95#define r7 REG (r7)
96#define r8 REG (r8)
97#define r9 REG (r9)
98#define r10 REG (r10)
99#define r11 REG (r11)
100#define r12 REG (r12)
101#define r13 REG (r13)
102#define r14 REG (r14)
103#define r15 REG (r15)
104#define vbr REG (vbr)
105#define gbr REG (gbr)
106#define pr REG (pr)
107#define mach REG (mach)
108#define macl REG (macl)
109#define sr REG (sr)
110#define pc REG (pc)
111
112/*
113 *  Define macros to handle section beginning and ends.
114 */
115
116
117#define BEGIN_CODE_DCL .text
118#define END_CODE_DCL
119#define BEGIN_DATA_DCL .data
120#define END_DATA_DCL
121#define BEGIN_CODE .text
122#define END_CODE
123#define BEGIN_DATA
124#define END_DATA
125#define BEGIN_BSS
126#define END_BSS
127#define END
128
129/*
130 *  Following must be tailor for a particular flavor of the C compiler.
131 *  They may need to put underscores in front of the symbols.
132 */
133
134#define PUBLIC(sym) .global SYM (sym)
135#define EXTERN(sym) .global SYM (sym)
136
137#endif
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