Subversion Repositories HelenOS

Rev

Rev 3022 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
1 jermar 1
/*
2071 jermar 2
 * Copyright (c) 2003-2004 Jakub Jermar
1 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
 
1769 jermar 29
/** @addtogroup mips32 
1702 cejka 30
 * @{
31
 */
32
/** @file
33
 */
34
 
1888 jermar 35
#ifndef KERN_mips32_ASM_H_
36
#define KERN_mips32_ASM_H_
1 jermar 37
 
173 jermar 38
#include <arch/types.h>
4055 trochtova 39
#include <typedefs.h>
173 jermar 40
#include <config.h>
41
 
1 jermar 42
 
326 palkovsky 43
static inline void cpu_sleep(void)
44
{
45
    /* Most of the simulators do not support */
2082 decky 46
/*  asm volatile ("wait"); */
326 palkovsky 47
}
48
 
173 jermar 49
/** Return base address of current stack
50
 *
51
 * Return the base address of the current stack.
52
 * The stack is assumed to be STACK_SIZE bytes long.
180 jermar 53
 * The stack must start on page boundary.
173 jermar 54
 */
1780 jermar 55
static inline uintptr_t get_stack_base(void)
173 jermar 56
{
1780 jermar 57
    uintptr_t v;
173 jermar 58
 
4055 trochtova 59
    asm volatile (
60
        "and %0, $29, %1\n"
61
        : "=r" (v)
62
        : "r" (~(STACK_SIZE-1))
63
    );
173 jermar 64
 
65
    return v;
66
}
67
 
313 palkovsky 68
extern void cpu_halt(void);
1780 jermar 69
extern void asm_delay_loop(uint32_t t);
70
extern void userspace_asm(uintptr_t ustack, uintptr_t uspace_uarg,
4055 trochtova 71
    uintptr_t entry);
195 vana 72
 
1881 jermar 73
extern ipl_t interrupts_disable(void);
74
extern ipl_t interrupts_enable(void);
75
extern void interrupts_restore(ipl_t ipl);
76
extern ipl_t interrupts_read(void);
4055 trochtova 77
extern void asm_delay_loop(uint32_t t);
1881 jermar 78
 
4055 trochtova 79
static inline void pio_write_8(ioport8_t *port, uint8_t v)
80
{
81
    *port = v; 
82
}
83
 
84
static inline void pio_write_16(ioport16_t *port, uint16_t v)
85
{
86
    *port = v; 
87
}
88
 
89
static inline void pio_write_32(ioport32_t *port, uint32_t v)
90
{
91
    *port = v; 
92
}
93
 
94
static inline uint8_t pio_read_8(ioport8_t *port)
95
{
96
    return *port;
97
}
98
 
99
static inline uint16_t pio_read_16(ioport16_t *port)
100
{
101
    return *port;
102
}
103
 
104
static inline uint32_t pio_read_32(ioport32_t *port)
105
{
106
    return *port;
107
}
108
 
1 jermar 109
#endif
1702 cejka 110
 
1769 jermar 111
/** @}
1702 cejka 112
 */