1 /*
2  * SPDX-License-Identifier: BSD-3-Clause
3  *
4  * Copyright © 2019 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 #pragma once
37 
38 #include <stdint.h>
39 #include <semihost.h>
40 
41 #define SYS_CLOCK		(0x10)
42 #define SYS_CLOSE		(0x02)
43 #define SYS_ELAPSED		(0x30)
44 #define SYS_ERRNO		(0x13)
45 #define SYS_EXIT		(0x18)
46 #define SYS_EXIT_EXTENDED	(0x20)
47 #define SYS_FLEN		(0x0C)
48 #define SYS_GET_CMDLINE		(0x15)
49 #define SYS_HEAPINFO		(0x16)
50 #define SYS_ISERROR		(0x08)
51 #define SYS_ISTTY		(0x09)
52 #define SYS_OPEN		(0x01)
53 #define SYS_READ		(0x06)
54 #define SYS_READC		(0x07)
55 #define SYS_REMOVE		(0x0E)
56 #define SYS_RENAME		(0x0F)
57 #define SYS_SEEK		(0x0A)
58 #define SYS_SYSTEM		(0x12)
59 #define SYS_TICKFREQ		(0x31)
60 #define SYS_TIME		(0x11)
61 #define SYS_TMPNAM		(0x0D)
62 #define SYS_WRITE		(0x05)
63 #define SYS_WRITEC		(0x03)
64 #define SYS_WRITE0		(0x04)
65 
66 #define SHFB_MAGIC_0	0x53
67 #define SHFB_MAGIC_1	0x48
68 #define SHFB_MAGIC_2	0x46
69 #define SHFB_MAGIC_3	0x42
70 
71 #ifdef __aarch64__
72 typedef unsigned long long int sh_param_t;
73 #else
74 typedef uintptr_t sh_param_t;
75 #endif
76 
77 uintptr_t
78 sys_semihost(uintptr_t op, uintptr_t param);
79 
80 #ifndef TINY_STDIO
81 int
82 _map_stdio(int fd);
83 #endif
84