OpenCores
URL https://opencores.org/ocsvn/openrisc/openrisc/trunk

Subversion Repositories openrisc

[/] [openrisc/] [trunk/] [or1ksim/] [testsuite/] [test-code-or1k/] [upcalls/] [upcall-basic.c] - Blame information for rev 588

Go to most recent revision | Details | Compare with Previous | View Log

Line No. Rev Author Line
1 93 jeremybenn 
/* upcall-basic.c. Test of Or1ksim basic handling of upcalls
2 
 
3 
   Copyright (C) 2010 Embecosm Limited
4 
 
5 
   Contributors various OpenCores participants
6 
   Contributor Jeremy Bennett <jeremy.bennett@embecosm.com>
7 
 
8 
   This file is part of OpenRISC 1000 Architectural Simulator.
9 
 
10 
   This program is free software; you can redistribute it and/or modify it
11 
   under the terms of the GNU General Public License as published by the Free
12 
   Software Foundation; either version 3 of the License, or (at your option)
13 
   any later version.
14 
 
15 
   This program is distributed in the hope that it will be useful, but WITHOUT
16 
   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
17 
   FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
18 
   more details.
19 
 
20 
   You should have received a copy of the GNU General Public License along
21 
   with this program.  If not, see <http:  www.gnu.org/licenses/>.  */
22 
 
23 
/* ----------------------------------------------------------------------------
24 
   This code is commented throughout for use with Doxygen.
25 
   --------------------------------------------------------------------------*/
26 
 
27 
#include "support.h"
28 
#include "spr-defs.h"
29 
#include "board.h"
30 
 
31 
 
32 
/*!Alignment exception handler defined here. */
33 
unsigned long excpt_align;
34 
 
35 
 
36 
/* --------------------------------------------------------------------------*/
37 
/*!Write a memory mapped byte register
38 
 
39 
   @param[in] addr   Memory mapped address
40 
   @param[in] value  Value to set                                            */
41 
/* --------------------------------------------------------------------------*/
42 
static void
43 
setreg8 (unsigned long int  addr,
44 
         unsigned char      value)
45 
{
46 
  *((volatile unsigned char *) addr) = value;
47 
  printf ("Wrote byte at 0x%08lx = 0x%02x.\n", addr, value);
48 
 
49 
}       /* setreg8 () */
50 
 
51 
 
52 
/* --------------------------------------------------------------------------*/
53 
/*!Write a memory mapped half word register
54 
 
55 
   @param[in] addr   Memory mapped address
56 
   @param[in] value  Value to set                                            */
57 
/* --------------------------------------------------------------------------*/
58 
static void
59 
setreg16 (unsigned long int   addr,
60 
          unsigned short int  value)
61 
{
62 
  *((volatile unsigned short int *) addr) = value;
63 
  printf ("Wrote half word at 0x%08lx = 0x%04x.\n", addr, value);
64 
 
65 
}       /* setreg16 () */
66 
 
67 
 
68 
/* --------------------------------------------------------------------------*/
69 
/*!Write a memory mapped full word register
70 
 
71 
   @param[in] addr   Memory mapped address
72 
   @param[in] value  Value to set                                            */
73 
/* --------------------------------------------------------------------------*/
74 
static void
75 
setreg32 (unsigned long int  addr,
76 
          unsigned long int  value)
77 
{
78 
  *((volatile unsigned long int *) addr) = value;
79 
  printf ("Wrote full word at 0x%08lx = 0x%08lx.\n", addr, value);
80 
 
81 
}       /* setreg32 () */
82 
 
83 
 
84 
/* --------------------------------------------------------------------------*/
85 
/*!Read a memory mapped byte register
86 
 
87 
   @param[in] addr   Memory mapped address
88 
 
89 
   @return  Value read                                                       */
90 
/* --------------------------------------------------------------------------*/
91 
unsigned char
92 
getreg8 (unsigned long int  addr)
93 
{
94 
  unsigned char  res = *((volatile unsigned char *) addr);
95 
  printf ("Read byte at 0x%08lx = 0x%02x.\n", addr, res);
96 
  return  res;
97 
 
98 
}       /* getreg8 () */
99 
 
100 
 
101 
/* --------------------------------------------------------------------------*/
102 
/*!Read a memory mapped half word register
103 
 
104 
   @param[in] addr   Memory mapped address
105 
 
106 
   @return  Value read                                                       */
107 
/* --------------------------------------------------------------------------*/
108 
unsigned short int
109 
getreg16 (unsigned long int  addr)
110 
{
111 
  unsigned short int  res = *((volatile unsigned short int *) addr);
112 
  printf ("Read half word at 0x%08lx = 0x%04x.\n", addr, res);
113 
  return  res;
114 
 
115 
}       /* getreg16 () */
116 
 
117 
 
118 
/* --------------------------------------------------------------------------*/
119 
/*!Read a memory mapped full word register
120 
 
121 
   @param[in] addr   Memory mapped address
122 
 
123 
   @return  Value read                                                       */
124 
/* --------------------------------------------------------------------------*/
125 
unsigned long int
126 
getreg32 (unsigned long int  addr)
127 
{
128 
  unsigned long int  res = *((volatile unsigned long int *) addr);
129 
  printf ("Read full word at 0x%08lx = 0x%08lx.\n", addr, res);
130 
  return  res;
131 
 
132 
}       /* getreg32 () */
133 
 
134 
 
135 
/* --------------------------------------------------------------------------*/
136 
/*! Exception handler for misalignment.
137 
 
138 
  Notes what has happened.                                                   */
139 
/* --------------------------------------------------------------------------*/
140 
void align_handler (void)
141 
{
142 
  printf ("Misaligned access.\n");
143 
 
144 
}       /* align_handler () */
145 
 
146 
 
147 
/* --------------------------------------------------------------------------*/
148 
/*!Main program to read and write memory mapped registers
149 
 
150 
   All these calls should be correctly aligned, but we set an handler, just in
151 
   case.
152 
 
153 
   @return  The return code from the program (always zero).                  */
154 
/* --------------------------------------------------------------------------*/
155 
int
156 
main ()
157 
{
158 
  /* Set the exception handler */
159 
  printf ("Setting alignment exception handler.\n");
160 
  excpt_align = (unsigned long)align_handler;
161 
 
162 
  /* Write some registers */
163 
  printf ("Writing registers.\n");
164 
 
165 
  /* Byte aligned */
166 
  setreg8 (GENERIC_BASE,     0xde);
167 
  setreg8 (GENERIC_BASE + 1, 0xad);
168 
  setreg8 (GENERIC_BASE + 2, 0xbe);
169 
  setreg8 (GENERIC_BASE + 3, 0xef);
170 
 
171 
  /* Half word aligned */
172 
  setreg16 (GENERIC_BASE + 4, 0xbaad);
173 
  setreg16 (GENERIC_BASE + 6, 0xf00d);
174 
 
175 
  /* Full word aligned */
176 
  setreg32 (GENERIC_BASE + 8, 0xcafebabe);
177 
 
178 
  /* Read some registers, but mix up which size from where. */
179 
  printf ("Reading registers.\n");
180 
 
181 
  /* Full word aligned */
182 
  (void)getreg32 (GENERIC_BASE + 0);
183 
 
184 
  /* Byte aligned */
185 
  (void)getreg8 (GENERIC_BASE + 4);
186 
  (void)getreg8 (GENERIC_BASE + 5);
187 
  (void)getreg8 (GENERIC_BASE + 6);
188 
  (void)getreg8 (GENERIC_BASE + 7);
189 
 
190 
  /* Half word aligned */
191 
  (void)getreg16 (GENERIC_BASE +  8);
192 
  (void)getreg16 (GENERIC_BASE + 10);
193 
 
194 
  /* All done */
195 
  printf ("All done.\n");
196 
  report (0xdeaddead);
197 
  return 0;
198 
 
199 
}       /* main () */

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.