RTEMS: cpukit/score/cpu/or1k/include/rtems/asm.h Source File

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asm.h
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1
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 */
26
27#ifndef __OR1K_ASM_h
28#define __OR1K_ASM_h
29
30/*
31 * Indicate we are in an assembly file and get the basic CPU definitions.
32 */
33
34#ifndef ASM
35#define ASM
36#endif
37#include <rtems/score/cpuopts.h>
38#include <rtems/score/or1k.h>
39
50/*
51 * Recent versions of GNU cpp define variables which indicate the
52 * need for underscores and percents. If not using GNU cpp or
53 * the version does not support this, then you will obviously
54 * have to define these as appropriate.
55 */
56
57#ifndef __USER_LABEL_PREFIX__
58#define __USER_LABEL_PREFIX__ _
59#endif
60
61#ifndef __REGISTER_PREFIX__
62#define __REGISTER_PREFIX__
63#endif
64
65/* ANSI concatenation macros. */
66
67#define CONCAT1(a, b) CONCAT2(a, b)
68#define CONCAT2(a, b) a ## b
69
70/* Use the right prefix for global labels. */
71
72#define SYM(x) CONCAT1 (__USER_LABEL_PREFIX__, x)
73
74/* Use the right prefix for registers. */
75
76#define REG(x) CONCAT1 (__REGISTER_PREFIX__, x)
77
78/*
79 * define macros for all of the registers on this CPU
80 *
81 * EXAMPLE: #define d0 REG (d0)
82 */
83
84/*
85 * Define macros to handle section beginning and ends.
86 */
87
88
89#define BEGIN_CODE_DCL .text
90#define END_CODE_DCL
91#define BEGIN_DATA_DCL .data
92#define END_DATA_DCL
93#define BEGIN_CODE .text
94#define END_CODE
95#define BEGIN_DATA
96#define END_DATA
97#define BEGIN_BSS
98#define END_BSS
99#define END
100
101/*
102 * Following must be tailor for a particular flavor of the C compiler.
103 * They may need to put underscores in front of the symbols.
104 */
105
106#define PUBLIC(sym) .global SYM (sym)
107#define EXTERN(sym) .global SYM (sym)
108
111#endif
or1k.h