source: rtems/cpukit/score/cpu/no_cpu/rtems/asm.h @ 270e3cc

4.104.114.84.95
Last change on this file since 270e3cc was 270e3cc, checked in by Joel Sherrill <joel.sherrill@…>, on Jul 11, 2000 at 2:56:04 PM

Patch rtems-rc-20000711-1-cvs.diff from Ralf Corsepius <corsepiu@…>
that decouples exec/ for the sh, m68k and i960 from targopts.h.

NOTE: The change to system.h is a hack to enable cpuopts.h
for some targets, but keep using targopts.h for others - I know it
does *not* work for sparc, mips, i386 and ppc. This will have
to be addressed as work continues on multilibing.

  • 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) 1994-1997.
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#ifndef ASM
34#define ASM
35#endif
36#include <rtems/score/cpuopts.h>
37#include <rtems/score/no_cpu.h>
38
39/*
40 *  Recent versions of GNU cpp define variables which indicate the
41 *  need for underscores and percents.  If not using GNU cpp or
42 *  the version does not support this, then you will obviously
43 *  have to define these as appropriate.
44 */
45
46#ifndef __USER_LABEL_PREFIX__
47#define __USER_LABEL_PREFIX__ _
48#endif
49
50#ifndef __REGISTER_PREFIX__
51#define __REGISTER_PREFIX__
52#endif
53
54/* ANSI concatenation macros.  */
55
56#define CONCAT1(a, b) CONCAT2(a, b)
57#define CONCAT2(a, b) a ## b
58
59/* Use the right prefix for global labels.  */
60
61#define SYM(x) CONCAT1 (__USER_LABEL_PREFIX__, x)
62
63/* Use the right prefix for registers.  */
64
65#define REG(x) CONCAT1 (__REGISTER_PREFIX__, x)
66
67/*
68 *  define macros for all of the registers on this CPU
69 *
70 *  EXAMPLE:     #define d0 REG (d0)
71 */
72
73/*
74 *  Define macros to handle section beginning and ends.
75 */
76
77
78#define BEGIN_CODE_DCL .text
79#define END_CODE_DCL
80#define BEGIN_DATA_DCL .data
81#define END_DATA_DCL
82#define BEGIN_CODE .text
83#define END_CODE
84#define BEGIN_DATA
85#define END_DATA
86#define BEGIN_BSS
87#define END_BSS
88#define END
89
90/*
91 *  Following must be tailor for a particular flavor of the C compiler.
92 *  They may need to put underscores in front of the symbols.
93 */
94
95#define PUBLIC(sym) .globl SYM (sym)
96#define EXTERN(sym) .globl SYM (sym)
97
98#endif
99/* end of include file */
100
101
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