WebSVN – HelenOS-historic – Diff – /SPARTAN/trunk/arch/ia32/include/asm.h


/*
 * Copyright (C) 2001-2004 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.
 */
 
#ifndef __ia32_ASM_H__
#define __ia32_ASM_H__
 
#include <arch/types.h>
#include <typedefs.h>
#include <config.h>
#include <synch/spinlock.h>
#include <arch/boot/memmap.h>
#include <config.h>
 
extern __u32 interrupt_handler_size;
 
extern void paging_on(void);
 
extern void interrupt_handlers(void);
 
extern __u8 inb(int port);
extern __u16 inw(int port);
extern __u32 inl(int port);
 
extern void outb(int port, __u8 b);
extern void outw(int port, __u16 w);
extern void outl(int port, __u32 l);
 
extern void enable_l_apic_in_msr(void);
 
/** Halt CPU
 *
 * Halt the current CPU until interrupt event.
 */
static inline void cpu_halt(void) { __asm__("hlt"); };
static inline void cpu_sleep(void) { __asm__("hlt"); };
 
/** Read CR2
 *
 * Return value in CR2
 *
 * @return Value read.
 */
static inline __u32 read_cr2(void) { __u32 v; __asm__ volatile ("movl %%cr2,%0" : "=r" (v)); return v; }
 
/** Write CR3
 *
 * Write value to CR3.
 *
 * @param v Value to be written.
 */
static inline void write_cr3(__u32 v) { __asm__ volatile ("movl %0,%%cr3\n" : : "r" (v)); }
 
/** Read CR3
 *
 * Return value in CR3
 *
 * @return Value read.
 */
static inline __u32 read_cr3(void) { __u32 v; __asm__ volatile ("movl %%cr3,%0" : "=r" (v)); return v; }
 
/** Write DR0
 *
 * Write value to DR0.
 *
 * @param v Value to be written.
 */
static inline void write_dr0(__u32 v) { __asm__ volatile ("movl %0,%%dr0\n" : : "r" (v)); }
 
/** Read DR0
 *
 * Return value in DR0
 *
 * @return Value read.
 */
static inline __u32 read_dr0(void) { __u32 v; __asm__ volatile ("movl %%dr0,%0" : "=r" (v)); return v; }
 
/** Set priority level low
 *
 * Enable interrupts and return previous
 * value of EFLAGS.
 */
static inline pri_t cpu_priority_low(void) {
    pri_t v;
    __asm__ volatile (
        "pushf\n"
        "popl %0\n"
        "sti\n"
        : "=r" (v)
    );
    return v;
}
 
/** Set priority level high
 *
 * Disable interrupts and return previous
 * value of EFLAGS.
 */
static inline pri_t cpu_priority_high(void) {
    pri_t v;
    __asm__ volatile (
        "pushf\n"
        "popl %0\n"
        "cli\n"
        : "=r" (v)
    );
    return v;
}
 
/** Restore priority level
 *
 * Restore EFLAGS.
 */
static inline void cpu_priority_restore(pri_t pri) {
    __asm__ volatile (
        "pushl %0\n"
        "popf\n"
        : : "r" (pri)
    );
}
 
/** Return raw priority level
 *
 * Return EFLAFS.
 */
static inline pri_t cpu_priority_read(void) {
    pri_t v;
    __asm__ volatile (
        "pushf\n"
        "popl %0\n"
        : "=r" (v)
    );
    return v;
}
 
/** 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 __address get_stack_base(void)
{
    __address v;
   
    __asm__ volatile ("andl %%esp, %0\n" : "=r" (v) : "0" (~(STACK_SIZE-1)));
   
    return v;
}
 
#endif
 

Rev 177	Rev 180
1	/*	1	/*
2	* Copyright (C) 2001-2004 Jakub Jermar	2	* Copyright (C) 2001-2004 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	#ifndef __ia32_ASM_H__	29	#ifndef __ia32_ASM_H__
30	#define __ia32_ASM_H__	30	#define __ia32_ASM_H__
31		31
32	#include <arch/types.h>	32	#include <arch/types.h>
33	#include <typedefs.h>	33	#include <typedefs.h>
34	#include <config.h>	34	#include <config.h>
35	#include <synch/spinlock.h>	35	#include <synch/spinlock.h>
36	#include <arch/boot/memmap.h>	36	#include <arch/boot/memmap.h>
37	#include <config.h>	37	#include <config.h>
38		38
39	extern __u32 interrupt_handler_size;	39	extern __u32 interrupt_handler_size;
40		40
41	extern void paging_on(void);	41	extern void paging_on(void);
42		42
43	extern void interrupt_handlers(void);	43	extern void interrupt_handlers(void);
44		44
45	extern __u8 inb(int port);	45	extern __u8 inb(int port);
46	extern __u16 inw(int port);	46	extern __u16 inw(int port);
47	extern __u32 inl(int port);	47	extern __u32 inl(int port);
48		48
49	extern void outb(int port, __u8 b);	49	extern void outb(int port, __u8 b);
50	extern void outw(int port, __u16 w);	50	extern void outw(int port, __u16 w);
51	extern void outl(int port, __u32 l);	51	extern void outl(int port, __u32 l);
52		52
53	extern void enable_l_apic_in_msr(void);	53	extern void enable_l_apic_in_msr(void);
54		54
55	/** Halt CPU	55	/** Halt CPU
56	*	56	*
57	* Halt the current CPU until interrupt event.	57	* Halt the current CPU until interrupt event.
58	*/	58	*/
59	static inline void cpu_halt(void) { __asm__("hlt"); };	59	static inline void cpu_halt(void) { __asm__("hlt"); };
60	static inline void cpu_sleep(void) { __asm__("hlt"); };	60	static inline void cpu_sleep(void) { __asm__("hlt"); };
61		61
62	/** Read CR2	62	/** Read CR2
63	*	63	*
64	* Return value in CR2	64	* Return value in CR2
65	*	65	*
66	* @return Value read.	66	* @return Value read.
67	*/	67	*/
68	static inline __u32 read_cr2(void) { __u32 v; __asm__ volatile ("movl %%cr2,%0" : "=r" (v)); return v; }	68	static inline __u32 read_cr2(void) { __u32 v; __asm__ volatile ("movl %%cr2,%0" : "=r" (v)); return v; }
69		69
70	/** Write CR3	70	/** Write CR3
71	*	71	*
72	* Write value to CR3.	72	* Write value to CR3.
73	*	73	*
74	* @param v Value to be written.	74	* @param v Value to be written.
75	*/	75	*/
76	static inline void write_cr3(__u32 v) { __asm__ volatile ("movl %0,%%cr3\n" : : "r" (v)); }	76	static inline void write_cr3(__u32 v) { __asm__ volatile ("movl %0,%%cr3\n" : : "r" (v)); }
77		77
78	/** Read CR3	78	/** Read CR3
79	*	79	*
80	* Return value in CR3	80	* Return value in CR3
81	*	81	*
82	* @return Value read.	82	* @return Value read.
83	*/	83	*/
84	static inline __u32 read_cr3(void) { __u32 v; __asm__ volatile ("movl %%cr3,%0" : "=r" (v)); return v; }	84	static inline __u32 read_cr3(void) { __u32 v; __asm__ volatile ("movl %%cr3,%0" : "=r" (v)); return v; }
85		85
86	/** Write DR0	86	/** Write DR0
87	*	87	*
88	* Write value to DR0.	88	* Write value to DR0.
89	*	89	*
90	* @param v Value to be written.	90	* @param v Value to be written.
91	*/	91	*/
92	static inline void write_dr0(__u32 v) { __asm__ volatile ("movl %0,%%dr0\n" : : "r" (v)); }	92	static inline void write_dr0(__u32 v) { __asm__ volatile ("movl %0,%%dr0\n" : : "r" (v)); }
93		93
94	/** Read DR0	94	/** Read DR0
95	*	95	*
96	* Return value in DR0	96	* Return value in DR0
97	*	97	*
98	* @return Value read.	98	* @return Value read.
99	*/	99	*/
100	static inline __u32 read_dr0(void) { __u32 v; __asm__ volatile ("movl %%dr0,%0" : "=r" (v)); return v; }	100	static inline __u32 read_dr0(void) { __u32 v; __asm__ volatile ("movl %%dr0,%0" : "=r" (v)); return v; }
101		101
102	/** Set priority level low	102	/** Set priority level low
103	*	103	*
104	* Enable interrupts and return previous	104	* Enable interrupts and return previous
105	* value of EFLAGS.	105	* value of EFLAGS.
106	*/	106	*/
107	static inline pri_t cpu_priority_low(void) {	107	static inline pri_t cpu_priority_low(void) {
108	pri_t v;	108	pri_t v;
109	__asm__ volatile (	109	__asm__ volatile (
110	"pushf\n"	110	"pushf\n"
111	"popl %0\n"	111	"popl %0\n"
112	"sti\n"	112	"sti\n"
113	: "=r" (v)	113	: "=r" (v)
114	);	114	);
115	return v;	115	return v;
116	}	116	}
117		117
118	/** Set priority level high	118	/** Set priority level high
119	*	119	*
120	* Disable interrupts and return previous	120	* Disable interrupts and return previous
121	* value of EFLAGS.	121	* value of EFLAGS.
122	*/	122	*/
123	static inline pri_t cpu_priority_high(void) {	123	static inline pri_t cpu_priority_high(void) {
124	pri_t v;	124	pri_t v;
125	__asm__ volatile (	125	__asm__ volatile (
126	"pushf\n"	126	"pushf\n"
127	"popl %0\n"	127	"popl %0\n"
128	"cli\n"	128	"cli\n"
129	: "=r" (v)	129	: "=r" (v)
130	);	130	);
131	return v;	131	return v;
132	}	132	}
133		133
134	/** Restore priority level	134	/** Restore priority level
135	*	135	*
136	* Restore EFLAGS.	136	* Restore EFLAGS.
137	*/	137	*/
138	static inline void cpu_priority_restore(pri_t pri) {	138	static inline void cpu_priority_restore(pri_t pri) {
139	__asm__ volatile (	139	__asm__ volatile (
140	"pushl %0\n"	140	"pushl %0\n"
141	"popf\n"	141	"popf\n"
142	: : "r" (pri)	142	: : "r" (pri)
143	);	143	);
144	}	144	}
145		145
146	/** Return raw priority level	146	/** Return raw priority level
147	*	147	*
148	* Return EFLAFS.	148	* Return EFLAFS.
149	*/	149	*/
150	static inline pri_t cpu_priority_read(void) {	150	static inline pri_t cpu_priority_read(void) {
151	pri_t v;	151	pri_t v;
152	__asm__ volatile (	152	__asm__ volatile (
153	"pushf\n"	153	"pushf\n"
154	"popl %0\n"	154	"popl %0\n"
155	: "=r" (v)	155	: "=r" (v)
156	);	156	);
157	return v;	157	return v;
158	}	158	}
159		159
160	/** Return base address of current stack	160	/** Return base address of current stack
161	*	161	*
162	* Return the base address of the current stack.	162	* Return the base address of the current stack.
163	* The stack is assumed to be STACK_SIZE bytes long.	163	* The stack is assumed to be STACK_SIZE bytes long.
-		164	* The stack must start on page boundary.
164	*/	165	*/
165	static inline __address get_stack_base(void)	166	static inline __address get_stack_base(void)
166	{	167	{
167	__address v;	168	__address v;
168		169
169	__asm__ volatile ("andl %%esp, %0\n" : "=r" (v) : "0" (~(STACK_SIZE-1)));	170	__asm__ volatile ("andl %%esp, %0\n" : "=r" (v) : "0" (~(STACK_SIZE-1)));
170		171
171	return v;	172	return v;
172	}	173	}
173		174
174	#endif	175	#endif
175		176

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(root)/SPARTAN/trunk/arch/ia32/include/asm.h – Rev 177 → 180