WebSVN – HelenOS – Diff – /trunk/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 <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);
 
#endif
 
/** @}
 */
 

Subversion Repositories HelenOS

(root)/trunk/kernel/arch/mips32/include/asm.h – Rev 2082 → 2089

Rev 2082		Rev 2089
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>	-
40	#include <config.h>	39	#include <config.h>
41		40
42		41
43	static inline void cpu_sleep(void)	42	static inline void cpu_sleep(void)
44	{	43	{
45	/* Most of the simulators do not support */	44	/* Most of the simulators do not support */
46	/* asm volatile ("wait"); */	45	/* asm volatile ("wait"); */
47	}	46	}
48		47
49	/** Return base address of current stack	48	/** Return base address of current stack
50	*	49	*
51	* Return the base address of the current stack.	50	* Return the base address of the current stack.
52	* The stack is assumed to be STACK_SIZE bytes long.	51	* The stack is assumed to be STACK_SIZE bytes long.
53	* The stack must start on page boundary.	52	* The stack must start on page boundary.
54	*/	53	*/
55	static inline uintptr_t get_stack_base(void)	54	static inline uintptr_t get_stack_base(void)
56	{	55	{
57	uintptr_t v;	56	uintptr_t v;
58		57
59	asm volatile ("and %0, $29, %1\n" : "=r" (v) : "r" (~(STACK_SIZE-1)));	58	asm volatile ("and %0, $29, %1\n" : "=r" (v) : "r" (~(STACK_SIZE-1)));
60		59
61	return v;	60	return v;
62	}	61	}
63		62
64	extern void cpu_halt(void);	63	extern void cpu_halt(void);
65	extern void asm_delay_loop(uint32_t t);	64	extern void asm_delay_loop(uint32_t t);
66	extern void userspace_asm(uintptr_t ustack, uintptr_t uspace_uarg,	65	extern void userspace_asm(uintptr_t ustack, uintptr_t uspace_uarg,
67	uintptr_t entry);	66	uintptr_t entry);
68		67
69	extern ipl_t interrupts_disable(void);	68	extern ipl_t interrupts_disable(void);
70	extern ipl_t interrupts_enable(void);	69	extern ipl_t interrupts_enable(void);
71	extern void interrupts_restore(ipl_t ipl);	70	extern void interrupts_restore(ipl_t ipl);
72	extern ipl_t interrupts_read(void);	71	extern ipl_t interrupts_read(void);
73		72
74	#endif	73	#endif
75		74
76	/** @}	75	/** @}
77	*/	76	*/
78		77