Subversion Repositories HelenOS

Rev

Rev 4342 | Rev 4344 | 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>
39 
#include <config.h>
40 
 
1 jermar 41 
 
326 palkovsky 42 
static inline void cpu_sleep(void)
43 
{
44 
    /* Most of the simulators do not support */
2082 decky 45 
/*  asm volatile ("wait"); */
326 palkovsky 46 
}
47 
 
173 jermar 48 
/** Return base address of current stack
49 
 *
50 
 * Return the base address of the current stack.
51 
 * The stack is assumed to be STACK_SIZE bytes long.
180 jermar 52 
 * The stack must start on page boundary.
173 jermar 53 
 */
1780 jermar 54 
static inline uintptr_t get_stack_base(void)
173 jermar 55 
{
1780 jermar 56 
    uintptr_t v;
173 jermar 57 
 
4343 svoboda 58 
    asm volatile (
59 
        "and %0, $29, %1\n"
60 
        : "=r" (v)
61 
        : "r" (~(STACK_SIZE-1))
62 
    );
173 jermar 63 
 
64 
    return v;
65 
}
66 
 
313 palkovsky 67 
extern void cpu_halt(void);
1780 jermar 68 
extern void asm_delay_loop(uint32_t t);
69 
extern void userspace_asm(uintptr_t ustack, uintptr_t uspace_uarg,
4343 svoboda 70 
    uintptr_t entry);
195 vana 71 
 
1881 jermar 72 
extern ipl_t interrupts_disable(void);
73 
extern ipl_t interrupts_enable(void);
74 
extern void interrupts_restore(ipl_t ipl);
75 
extern ipl_t interrupts_read(void);
4343 svoboda 76 
extern void asm_delay_loop(uint32_t t);
1881 jermar 77 
 
4343 svoboda 78 
static inline void pio_write_8(ioport_t port, uint8_t v)
4342 svoboda 79 
{
4343 svoboda 80 
    /* XXX */
4342 svoboda 81 
}
82 
 
4343 svoboda 83 
static inline uint8_t pio_read_8(ioport_t port)
4342 svoboda 84 
{
4343 svoboda 85 
    return 0;   /* XXX */
4342 svoboda 86 
}
87 
 
1 jermar 88 
#endif
1702 cejka 89 
 
1769 jermar 90 
/** @}
1702 cejka 91 
 */