1 /*
2  * SPDX-License-Identifier: BSD-3-Clause
3  *
4  * Copyright © 2023 Keith Packard
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  *
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  *
13  * 2. Redistributions in binary form must reproduce the above
14  *    copyright notice, this list of conditions and the following
15  *    disclaimer in the documentation and/or other materials provided
16  *    with the distribution.
17  *
18  * 3. Neither the name of the copyright holder nor the names of its
19  *    contributors may be used to endorse or promote products derived
20  *    from this software without specific prior written permission.
21  *
22  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
24  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
25  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
26  * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
27  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
28  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
29  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
31  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
32  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
33  * OF THE POSSIBILITY OF SUCH DAMAGE.
34  */
35 
36 #ifndef _SH_SEMIHOST_H_
37 #define _SH_SEMIHOST_H_
38 
39 #include <stdio.h>
40 #include <stdint.h>
41 
42 #define SH_QEMU
43 
44 typedef volatile uint8_t vuint8_t;
45 typedef volatile uint32_t vuint32_t;
46 
47 #ifdef SH_QEMU
48 
49 struct sh_serial {
50     vuint32_t   smr;
51     vuint32_t   brr;
52     vuint32_t   scr;
53     vuint32_t   tdr;
54 };
55 
56 #define sh_serial0 (*(struct sh_serial *) 0xffe00000)
57 #define sh_serial1 (*(struct sh_serial *) 0xffe80000)
58 
59 #else
60 
61 struct sh_cons {
62     vuint8_t    data;
63     uint8_t     unused_01[0xf];
64     vuint8_t    halt;
65 };
66 
67 #define sh_cons (*(struct sh_cons *) 0x10000000)
68 
69 #endif
70 
71 int
72 sh_putc(char c, FILE *file);
73 
74 int
75 sh_getc(FILE *file);
76 
77 #endif /* _SH_SEMIHOST_H_ */
78