source: rtems/c/src/exec/score/cpu/no_cpu/asm.h @ b9181082

4.104.114.84.9
Last change on this file since b9181082 was b9181082, checked in by Joel Sherrill <joel.sherrill@…>, on Jan 29, 1997 at 12:13:00 AM

Added include of targopts.h.

  • Property mode set to 100644
File size: 2.2 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 __NO_CPU_ASM_h
27#define __NO_CPU_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/targopts.h>
35#include <rtems/score/no_cpu.h>
36
37/*
38 *  Recent versions of GNU cpp define variables which indicate the
39 *  need for underscores and percents.  If not using GNU cpp or
40 *  the version does not support this, then you will obviously
41 *  have to define these as appropriate.
42 */
43
44#ifndef __USER_LABEL_PREFIX__
45#define __USER_LABEL_PREFIX__ _
46#endif
47
48#ifndef __REGISTER_PREFIX__
49#define __REGISTER_PREFIX__
50#endif
51
52/* ANSI concatenation macros.  */
53
54#define CONCAT1(a, b) CONCAT2(a, b)
55#define CONCAT2(a, b) a ## b
56
57/* Use the right prefix for global labels.  */
58
59#define SYM(x) CONCAT1 (__USER_LABEL_PREFIX__, x)
60
61/* Use the right prefix for registers.  */
62
63#define REG(x) CONCAT1 (__REGISTER_PREFIX__, x)
64
65/*
66 *  define macros for all of the registers on this CPU
67 *
68 *  EXAMPLE:     #define d0 REG (d0)
69 */
70
71/*
72 *  Define macros to handle section beginning and ends.
73 */
74
75
76#define BEGIN_CODE_DCL .text
77#define END_CODE_DCL
78#define BEGIN_DATA_DCL .data
79#define END_DATA_DCL
80#define BEGIN_CODE .text
81#define END_CODE
82#define BEGIN_DATA
83#define END_DATA
84#define BEGIN_BSS
85#define END_BSS
86#define END
87
88/*
89 *  Following must be tailor for a particular flavor of the C compiler.
90 *  They may need to put underscores in front of the symbols.
91 */
92
93#define PUBLIC(sym) .globl SYM (sym)
94#define EXTERN(sym) .globl SYM (sym)
95
96#endif
97/* end of include file */
98
99
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