RTEMS CPU Kit with SuperCore  4.11.3
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  * 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) 2015 University of York.
21  * Hesham ALMatary <hmka501@york.ac.uk>
22  *
23  *
24  * COPYRIGHT (c) 1994-1997.
25  * On-Line Applications Research Corporation (OAR).
26  *
27  * Redistribution and use in source and binary forms, with or without
28  * modification, are permitted provided that the following conditions
29  * are met:
30  * 1. Redistributions of source code must retain the above copyright
31  * notice, this list of conditions and the following disclaimer.
32  * 2. Redistributions in binary form must reproduce the above copyright
33  * notice, this list of conditions and the following disclaimer in the
34  * documentation and/or other materials provided with the distribution.
35  *
36  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
37  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
38  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
39  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
40  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
41  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
42  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
43  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
44  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
45  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
46  * SUCH DAMAGE.
47  */
48 
49 #ifndef __EPIPHANY_ASM_H
50 #define __EPIPHANY_ASM_H
51 
52 /*
53  * Indicate we are in an assembly file and get the basic CPU definitions.
54  */
55 
56 #ifndef ASM
57 #define ASM
58 #endif
59 #include <rtems/score/cpuopts.h>
60 #include <rtems/score/epiphany.h>
61 
62 /*
63  * Recent versions of GNU cpp define variables which indicate the
64  * need for underscores and percents. If not using GNU cpp or
65  * the version does not support this, then you will obviously
66  * have to define these as appropriate.
67  */
68 
69 #ifndef __USER_LABEL_PREFIX__
70 #define __USER_LABEL_PREFIX__ _
71 #endif
72 
73 #ifndef __REGISTER_PREFIX__
74 #define __REGISTER_PREFIX__
75 #endif
76 
77 /* ANSI concatenation macros. */
78 
79 #define CONCAT1(a, b) CONCAT2(a, b)
80 #define CONCAT2(a, b) a ## b
81 
82 /* Use the right prefix for global labels. */
83 
84 #define SYM(x) CONCAT1 (__USER_LABEL_PREFIX__, x)
85 
86 /* Use the right prefix for registers. */
87 
88 #define REG(x) CONCAT1 (__REGISTER_PREFIX__, x)
89 
90 /*
91  * define macros for all of the registers on this CPU
92  *
93  * EXAMPLE: #define d0 REG (d0)
94  */
95 
96 /*
97  * Define macros to handle section beginning and ends.
98  */
99 #define BEGIN_CODE_DCL .text
100 #define END_CODE_DCL
101 #define BEGIN_DATA_DCL .data
102 #define END_DATA_DCL
103 #define BEGIN_CODE .text
104 #define END_CODE
105 #define BEGIN_DATA
106 #define END_DATA
107 #define BEGIN_BSS
108 #define END_BSS
109 #define END
110 
111 /*
112  * Following must be tailor for a particular flavor of the C compiler.
113  * They may need to put underscores in front of the symbols.
114  */
115 
116 #define PUBLIC(sym) .global SYM (sym)
117 #define EXTERN(sym) .extern SYM (sym)
118 #define TYPE_FUNC(sym) .type SYM (sym), %function
119 
120 #endif
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