WebSVN – HelenOS – Diff – /trunk/kernel/arch/arm32/include/asm.h


/*
 * Copyright (c) 2007 Michal Kebrt
 * 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 arm32  
 * @{
 */
/** @file
 *  @brief Declarations of functions implemented in assembly.
 */
 
#ifndef KERN_arm32_ASM_H_
#define KERN_arm32_ASM_H_
 
#include <arch/types.h>
#include <arch/stack.h>
#include <config.h>
#include <arch/interrupt.h>
 
/** No such instruction on ARM to sleep CPU. */
static inline void cpu_sleep(void)
{
}
 
/** No I/O port address space on ARM. */
static inline void outb(ioport_t port, uint8_t v)
{
}
 
/** No I/O port address space on ARM. */
static inline uint8_t inb(ioport_t port)
{
    return 0;
}
 
/** 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, sp, %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);
 
#endif
 
/** @}
 */
 

Rev 2465	Rev 3880
1	/*	1	/*
2	* Copyright (c) 2007 Michal Kebrt	2	* Copyright (c) 2007 Michal Kebrt
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 arm32	29	/** @addtogroup arm32
30	* @{	30	* @{
31	*/	31	*/
32	/** @file	32	/** @file
33	* @brief Declarations of functions implemented in assembly.	33	* @brief Declarations of functions implemented in assembly.
34	*/	34	*/
35		35
36	#ifndef KERN_arm32_ASM_H_	36	#ifndef KERN_arm32_ASM_H_
37	#define KERN_arm32_ASM_H_	37	#define KERN_arm32_ASM_H_
38		38
39	#include <arch/types.h>	39	#include <arch/types.h>
40	#include <arch/stack.h>	40	#include <arch/stack.h>
41	#include <config.h>	41	#include <config.h>
42	#include <arch/interrupt.h>	42	#include <arch/interrupt.h>
43		43
44	/** No such instruction on ARM to sleep CPU. */	44	/** No such instruction on ARM to sleep CPU. */
45	static inline void cpu_sleep(void)	45	static inline void cpu_sleep(void)
46	{	46	{
47	}	47	}
48		48
-		49	/** No I/O port address space on ARM. */
-		50	static inline void outb(ioport_t port, uint8_t v)
-		51	{
-		52	}
-		53
-		54	/** No I/O port address space on ARM. */
-		55	static inline uint8_t inb(ioport_t port)
-		56	{
-		57	return 0;
-		58	}
-		59
49	/** Return base address of current stack.	60	/** Return base address of current stack.
50	*	61	*
51	* Return the base address of the current stack.	62	* Return the base address of the current stack.
52	* The stack is assumed to be STACK_SIZE bytes long.	63	* The stack is assumed to be STACK_SIZE bytes long.
53	* The stack must start on page boundary.	64	* The stack must start on page boundary.
54	*/	65	*/
55	static inline uintptr_t get_stack_base(void)	66	static inline uintptr_t get_stack_base(void)
56	{	67	{
57	uintptr_t v;	68	uintptr_t v;
58	asm volatile (	69	asm volatile (
59	"and %0, sp, %1\n"	70	"and %0, sp, %1\n"
60	: "=r" (v)	71	: "=r" (v)
61	: "r" (~(STACK_SIZE - 1))	72	: "r" (~(STACK_SIZE - 1))
62	);	73	);
63	return v;	74	return v;
64	}	75	}
65		76
66	extern void cpu_halt(void);	77	extern void cpu_halt(void);
67	extern void asm_delay_loop(uint32_t t);	78	extern void asm_delay_loop(uint32_t t);
68	extern void userspace_asm(uintptr_t ustack, uintptr_t uspace_uarg,	79	extern void userspace_asm(uintptr_t ustack, uintptr_t uspace_uarg,
69	uintptr_t entry);	80	uintptr_t entry);
70		81
71	#endif	82	#endif
72		83
73	/** @}	84	/** @}
74	*/	85	*/
75		86

Subversion Repositories HelenOS

(root)/trunk/kernel/arch/arm32/include/asm.h – Rev 2465 → 3880