source: rtems/cpukit/score/cpu/sh/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: 3.2 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 *  Authors: Ralf Corsepius (corsepiu@faw.uni-ulm.de) and
10 *           Bernd Becker (becker@faw.uni-ulm.de)
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 *
23 *  COPYRIGHT (c) 1997-1998, FAW Ulm, Germany
24 *
25 *  This program is distributed in the hope that it will be useful,
26 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
27 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
28 *
29 *
30 *  COPYRIGHT (c) 1998.
31 *  On-Line Applications Research Corporation (OAR).
32 *  Copyright assigned to U.S. Government, 1994.
33 *
34 *  The license and distribution terms for this file may be
35 *  found in the file LICENSE in this distribution or at
36 *  http://www.OARcorp.com/rtems/license.html.
37 *
38 *  $Id$
39 */
40
41#ifndef __CPU_SH_ASM_h
42#define __CPU_SH_ASM_h
43
44/*
45 *  Indicate we are in an assembly file and get the basic CPU definitions.
46 */
47
48#ifndef ASM
49#define ASM
50#endif
51
52#include <rtems/score/cpuopts.h>
53#include <rtems/score/sh.h>
54
55/*
56 *  Recent versions of GNU cpp define variables which indicate the
57 *  need for underscores and percents.  If not using GNU cpp or
58 *  the version does not support this, then you will obviously
59 *  have to define these as appropriate.
60 */
61
62#ifndef __USER_LABEL_PREFIX__
63#define __USER_LABEL_PREFIX__ _
64#endif
65
66#ifndef __REGISTER_PREFIX__
67#define __REGISTER_PREFIX__
68#endif
69
70/* ANSI concatenation macros.  */
71
72#define CONCAT1(a, b) CONCAT2(a, b)
73#define CONCAT2(a, b) a ## b
74
75/* Use the right prefix for global labels.  */
76
77#define SYM(x) CONCAT1 (__USER_LABEL_PREFIX__, x)
78
79/* Use the right prefix for registers.  */
80
81#define REG(x) CONCAT1 (__REGISTER_PREFIX__, x)
82
83/*
84 *  define macros for all of the registers on this CPU
85 *
86 *  EXAMPLE:     #define d0 REG (d0)
87 */
88#define r0 REG (r0)
89#define r1 REG (r1)
90#define r2 REG (r2)
91#define r3 REG (r3)
92#define r4 REG (r4)
93#define r5 REG (r5)
94#define r6 REG (r6)
95#define r7 REG (r7)
96#define r8 REG (r8)
97#define r9 REG (r9)
98#define r10 REG (r10)
99#define r11 REG (r11)
100#define r12 REG (r12)
101#define r13 REG (r13)
102#define r14 REG (r14)
103#define r15 REG (r15)
104#define vbr REG (vbr)
105#define gbr REG (gbr)
106#define pr REG (pr)
107#define mach REG (mach)
108#define macl REG (macl)
109#define sr REG (sr)
110#define pc REG (pc)
111
112/*
113 *  Define macros to handle section beginning and ends.
114 */
115
116
117#define BEGIN_CODE_DCL .text
118#define END_CODE_DCL
119#define BEGIN_DATA_DCL .data
120#define END_DATA_DCL
121#define BEGIN_CODE .text
122#define END_CODE
123#define BEGIN_DATA
124#define END_DATA
125#define BEGIN_BSS
126#define END_BSS
127#define END
128
129/*
130 *  Following must be tailor for a particular flavor of the C compiler.
131 *  They may need to put underscores in front of the symbols.
132 */
133
134#define PUBLIC(sym) .global SYM (sym)
135#define EXTERN(sym) .global SYM (sym)
136
137#endif
Note: See TracBrowser for help on using the repository browser.