source: rtems/cpukit/score/cpu/h8300/asm.h @ a85d8ec

4.104.114.84.9
Last change on this file since a85d8ec was 5532553, checked in by Joel Sherrill <joel.sherrill@…>, on Jun 29, 2000 at 11:00:48 PM

This is the initial addition of the port of RTEMS to the
Hitachi H8 family. This port was done by Philip Quaife
<philip@…> of Q Solutions and sponsored by
Comnet Technologies Ltd. The port was done based on RTEMS 3.5.1
to a Hitach H8300H. The port was updated to RTEMS 4.5 style
Makefiles/configure by Joel Sherrill <joel@…>.
While doing this Joel added support for the h8300-rtems to
binutils, gcc, newlib, and gdb.

NOTE: Philip submitted a BSP for a Hitachi evaluation board
which is being merged as a separate entity.

  • Property mode set to 100644
File size: 2.7 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 * 
21 *  COPYRIGHT (c) 1989-1999.
22 *  On-Line Applications Research Corporation (OAR).
23 * 
24 *  The license and distribution terms for this file may be
25 *  found in the file LICENSE in this distribution or at
26 *  http://www.OARcorp.com/rtems/license.html.
27 * 
28 *  $Id$
29 */
30
31#ifndef __H8300_CPU_ASM_h
32#define __H8300_CPU_ASM_h
33
34/*
35 *  Indicate we are in an assembly file and get the basic CPU definitions.
36 */
37
38#define ASM
39#include <rtems/score/h8300.h>
40
41/*
42 *  Recent versions of GNU cpp define variables which indicate the
43 *  need for underscores and percents.  If not using GNU cpp or
44 *  the version does not support this, then you will obviously
45 *  have to define these as appropriate.
46 */
47
48#ifndef __USER_LABEL_PREFIX__
49#define __USER_LABEL_PREFIX__ _
50#endif
51
52#ifndef __REGISTER_PREFIX__
53#define __REGISTER_PREFIX__
54#endif
55
56/* ANSI concatenation macros.  */
57
58#define CONCAT1(a, b) CONCAT2(a, b)
59#define CONCAT2(a, b) a ## b
60
61/* Use the right prefix for global labels.  */
62
63#define SYM(x) CONCAT1 (__USER_LABEL_PREFIX__, x)
64
65/* Use the right prefix for registers.  */
66
67#define REG(x) CONCAT1 (__REGISTER_PREFIX__, x)
68
69/*
70 *  define macros for all of the registers on this CPU
71 *
72 *  EXAMPLE:     #define d0 REG (d0)
73 */
74#define r0      REG(r0)
75#define r1      REG(r1)
76#define r2      REG(r2)
77#define r3      REG(r3)
78#define r4      REG(r4)
79#define r5      REG(r5)
80#define r6      REG(r6)
81#define r7      REG(r7)
82
83#define er0     REG(er0)
84#define er1     REG(er1)
85#define er2     REG(er2)       
86#define er3     REG(er3)       
87#define er4     REG(er4)       
88#define er5     REG(er5)       
89#define er6     REG(er6)       
90#define er7     REG(er7)       
91
92#define sp      REG(sp)
93
94/*
95 *  Define macros to handle section beginning and ends.
96 */
97
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 asm ( ".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) .globl SYM (sym)
117#define EXTERN(sym) .globl SYM (sym)
118
119#endif
120/* end of include file */
121
122        asm( \".h8300h\" );
123
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