Subversion Repositories HelenOS

Rev

Rev 4343 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
2128 jermar 1
/*
2465 jermar 2
 * Copyright (c) 2007 Michal Kebrt
2128 jermar 3
 * All rights reserved.
4
 *
5
 * Redistribution and use in source and binary forms, with or without
6
 * modification, are permitted provided that the following conditions
7
 * are met:
8
 *
9
 * - Redistributions of source code must retain the above copyright
10
 *   notice, this list of conditions and the following disclaimer.
11
 * - Redistributions in binary form must reproduce the above copyright
12
 *   notice, this list of conditions and the following disclaimer in the
13
 *   documentation and/or other materials provided with the distribution.
14
 * - The name of the author may not be used to endorse or promote products
15
 *   derived from this software without specific prior written permission.
16
 *
17
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
 */
28
 
29
/** @addtogroup arm32  
30
 * @{
31
 */
2465 jermar 32
/** @file
33
 *  @brief Declarations of functions implemented in assembly.
2128 jermar 34
 */
35
 
36
#ifndef KERN_arm32_ASM_H_
37
#define KERN_arm32_ASM_H_
38
 
39
#include <arch/types.h>
2465 jermar 40
#include <arch/stack.h>
41
#include <config.h>
42
#include <arch/interrupt.h>
2128 jermar 43
 
2465 jermar 44
/** No such instruction on ARM to sleep CPU. */
2128 jermar 45
static inline void cpu_sleep(void)
46
{
47
}
48
 
4344 svoboda 49
static inline void pio_write_8(ioport8_t *port, uint8_t v)
4342 svoboda 50
{
4344 svoboda 51
    *port = v;
4342 svoboda 52
}
53
 
4344 svoboda 54
static inline void pio_write_16(ioport16_t *port, uint16_t v)
4342 svoboda 55
{
4344 svoboda 56
    *port = v;
4342 svoboda 57
}
58
 
4344 svoboda 59
static inline void pio_write_32(ioport32_t *port, uint32_t v)
60
{
61
    *port = v;
62
}
63
 
64
static inline uint8_t pio_read_8(ioport8_t *port)
65
{
66
    return *port;
67
}
68
 
69
static inline uint16_t pio_read_16(ioport16_t *port)
70
{
71
    return *port;
72
}
73
 
74
static inline uint32_t pio_read_32(ioport32_t *port)
75
{
76
    return *port;
77
}
78
 
2465 jermar 79
/** Return base address of current stack.
2128 jermar 80
 *
81
 * Return the base address of the current stack.
82
 * The stack is assumed to be STACK_SIZE bytes long.
83
 * The stack must start on page boundary.
84
 */
85
static inline uintptr_t get_stack_base(void)
86
{
2465 jermar 87
    uintptr_t v;
88
    asm volatile (
89
        "and %0, sp, %1\n"
90
        : "=r" (v)
91
        : "r" (~(STACK_SIZE - 1))
92
    );
93
    return v;
2128 jermar 94
}
95
 
96
extern void cpu_halt(void);
97
extern void asm_delay_loop(uint32_t t);
98
extern void userspace_asm(uintptr_t ustack, uintptr_t uspace_uarg,
99
    uintptr_t entry);
100
 
101
#endif
102
 
103
/** @}
104
 */