WebSVN – HelenOS – Diff – /branches/dynload/kernel/arch/mips32/include/asm.h


/*
 * Copyright (c) 2003-2004 Jakub Jermar
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
/** @addtogroup mips32 
 * @{
 */
/** @file
 */
 
#ifndef KERN_mips32_ASM_H_
#define KERN_mips32_ASM_H_
 
#include <arch/types.h>
#include <typedefs.h>
#include <config.h>
 
 
static inline void cpu_sleep(void)
{
    /* Most of the simulators do not support */
/*  asm volatile ("wait"); */
}
 
/** Return base address of current stack
 *
 * Return the base address of the current stack.
 * The stack is assumed to be STACK_SIZE bytes long.
 * The stack must start on page boundary.
 */
static inline uintptr_t get_stack_base(void)
{
    uintptr_t v;
   
    asm volatile (
        "and %0, $29, %1\n"
        : "=r" (v)
        : "r" (~(STACK_SIZE-1))
    );
   
    return v;
}
 
extern void cpu_halt(void);
extern void asm_delay_loop(uint32_t t);
extern void userspace_asm(uintptr_t ustack, uintptr_t uspace_uarg,
    uintptr_t entry);
 
extern ipl_t interrupts_disable(void);
extern ipl_t interrupts_enable(void);
extern void interrupts_restore(ipl_t ipl);
extern ipl_t interrupts_read(void);
extern void asm_delay_loop(uint32_t t);
 
static inline void pio_write_8(ioport8_t *port, uint8_t v)
{
    *port = v; 
}
 
static inline void pio_write_16(ioport16_t *port, uint16_t v)
{
    *port = v; 
}
 
static inline void pio_write_32(ioport32_t *port, uint32_t v)
{
    *port = v; 
}
 
static inline uint8_t pio_read_8(ioport8_t *port)
{
    return *port;
}
 
static inline uint16_t pio_read_16(ioport16_t *port)
{
    return *port;
}
 
static inline uint32_t pio_read_32(ioport32_t *port)
{
    return *port;
}
 
#endif
 
/** @}
 */
 

Subversion Repositories HelenOS

(root)/branches/dynload/kernel/arch/mips32/include/asm.h – Rev 4344 → 4345

Rev 4344		Rev 4345
1	/*	1	/*
2	* Copyright (c) 2003-2004 Jakub Jermar	2	* Copyright (c) 2003-2004 Jakub Jermar
3	* All rights reserved.	3	* All rights reserved.
4	*	4	*
5	* Redistribution and use in source and binary forms, with or without	5	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions	6	* modification, are permitted provided that the following conditions
7	* are met:	7	* are met:
8	*	8	*
9	* - Redistributions of source code must retain the above copyright	9	* - Redistributions of source code must retain the above copyright
10	* notice, this list of conditions and the following disclaimer.	10	* notice, this list of conditions and the following disclaimer.
11	* - Redistributions in binary form must reproduce the above copyright	11	* - Redistributions in binary form must reproduce the above copyright
12	* notice, this list of conditions and the following disclaimer in the	12	* notice, this list of conditions and the following disclaimer in the
13	* documentation and/or other materials provided with the distribution.	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	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.	15	* derived from this software without specific prior written permission.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	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	18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	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	23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	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	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.	26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27	*/	27	*/
28		28
29	/** @addtogroup mips32	29	/** @addtogroup mips32
30	* @{	30	* @{
31	*/	31	*/
32	/** @file	32	/** @file
33	*/	33	*/
34		34
35	#ifndef KERN_mips32_ASM_H_	35	#ifndef KERN_mips32_ASM_H_
36	#define KERN_mips32_ASM_H_	36	#define KERN_mips32_ASM_H_
37		37
38	#include <arch/types.h>	38	#include <arch/types.h>
-		39	#include <typedefs.h>
39	#include <config.h>	40	#include <config.h>
40		41
41		42
42	static inline void cpu_sleep(void)	43	static inline void cpu_sleep(void)
43	{	44	{
44	/* Most of the simulators do not support */	45	/* Most of the simulators do not support */
45	/* asm volatile ("wait"); */	46	/* asm volatile ("wait"); */
46	}	47	}
47		48
48	/** Return base address of current stack	49	/** Return base address of current stack
49	*	50	*
50	* Return the base address of the current stack.	51	* Return the base address of the current stack.
51	* The stack is assumed to be STACK_SIZE bytes long.	52	* The stack is assumed to be STACK_SIZE bytes long.
52	* The stack must start on page boundary.	53	* The stack must start on page boundary.
53	*/	54	*/
54	static inline uintptr_t get_stack_base(void)	55	static inline uintptr_t get_stack_base(void)
55	{	56	{
56	uintptr_t v;	57	uintptr_t v;
57		58
58	asm volatile (	59	asm volatile (
59	"and %0, $29, %1\n"	60	"and %0, $29, %1\n"
60	: "=r" (v)	61	: "=r" (v)
61	: "r" (~(STACK_SIZE-1))	62	: "r" (~(STACK_SIZE-1))
62	);	63	);
63		64
64	return v;	65	return v;
65	}	66	}
66		67
67	extern void cpu_halt(void);	68	extern void cpu_halt(void);
68	extern void asm_delay_loop(uint32_t t);	69	extern void asm_delay_loop(uint32_t t);
69	extern void userspace_asm(uintptr_t ustack, uintptr_t uspace_uarg,	70	extern void userspace_asm(uintptr_t ustack, uintptr_t uspace_uarg,
70	uintptr_t entry);	71	uintptr_t entry);
71		72
72	extern ipl_t interrupts_disable(void);	73	extern ipl_t interrupts_disable(void);
73	extern ipl_t interrupts_enable(void);	74	extern ipl_t interrupts_enable(void);
74	extern void interrupts_restore(ipl_t ipl);	75	extern void interrupts_restore(ipl_t ipl);
75	extern ipl_t interrupts_read(void);	76	extern ipl_t interrupts_read(void);
76	extern void asm_delay_loop(uint32_t t);	77	extern void asm_delay_loop(uint32_t t);
77		78
78	static inline void pio_write_8(ioport8_t *port, uint8_t v)	79	static inline void pio_write_8(ioport8_t *port, uint8_t v)
79	{	80	{
80	*port = v;	81	*port = v;
81	}	82	}
82		83
83	static inline void pio_write_16(ioport16_t *port, uint16_t v)	84	static inline void pio_write_16(ioport16_t *port, uint16_t v)
84	{	85	{
85	*port = v;	86	*port = v;
86	}	87	}
87		88
88	static inline void pio_write_32(ioport32_t *port, uint32_t v)	89	static inline void pio_write_32(ioport32_t *port, uint32_t v)
89	{	90	{
90	*port = v;	91	*port = v;
91	}	92	}
92		93
93	static inline uint8_t pio_read_8(ioport8_t *port)	94	static inline uint8_t pio_read_8(ioport8_t *port)
94	{	95	{
95	return *port;	96	return *port;
96	}	97	}
97		98
98	static inline uint16_t pio_read_16(ioport16_t *port)	99	static inline uint16_t pio_read_16(ioport16_t *port)
99	{	100	{
100	return *port;	101	return *port;
101	}	102	}
102		103
103	static inline uint32_t pio_read_32(ioport32_t *port)	104	static inline uint32_t pio_read_32(ioport32_t *port)
104	{	105	{
105	return *port;	106	return *port;
106	}	107	}
107		108
108	#endif	109	#endif
109		110
110	/** @}	111	/** @}
111	*/	112	*/
112		113