WebSVN – HelenOS – Diff – /trunk/kernel/arch/amd64/include/asm.h


/*
 * Copyright (C) 2005 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 __amd64_ASM_H__
#define __amd64_ASM_H__
 
#include <arch/types.h>
#include <config.h>
 
 
void asm_delay_loop(__u32 t);
void asm_fake_loop(__u32 t);
 
 
/* TODO: implement the real stuff */
static inline __address get_stack_base(void)
{
    return NULL;
}
 
static inline void cpu_sleep(void) { __asm__("hlt"); };
 
 
static inline __u8 inb(__u16 port)
{
    __u8 out;
 
    asm (
        "mov %0, %%dx;"
        "inb %%dx,%%al;"
        "mov %%al, %1;"
        :"=m"(out)
        :"m"(port)
        :"%dx","%al"
        );
    return out;
}
 
static inline __u8 outb(__u16 port,__u8 b)
{
    asm (
        "mov %0,%%dx;"
        "mov %1,%%al;"
        "outb %%al,%%dx;"
        :
        :"m"( port), "m" (b)
        :"%dx","%al"
        );
}
 
/** 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 (
        "pushfq\n"
        "popq %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 (
        "pushfq\n"
        "popq %0\n"
        "cli\n"
        : "=r" (v)
        );
    return v;
}
 
/** Restore priority level
 *
 * Restore EFLAGS.
 */
static inline void cpu_priority_restore(pri_t pri) {
    __asm__ volatile (
        "pushq %0\n"
        "popfq\n"
        : : "r" (pri)
        );
}
 
/** Return raw priority level
 *
 * Return EFLAFS.
 */
static inline pri_t cpu_priority_read(void) {
    pri_t v;
    __asm__ volatile (
        "pushfq\n"
        "popq %0\n"
        : "=r" (v)
    );
    return v;
}
 
extern size_t interrupt_handler_size;
extern void interrupt_handlers(void);
 
#endif
 

Rev 200	Rev 206
1	/*	1	/*
2	* Copyright (C) 2005 Jakub Jermar	2	* Copyright (C) 2005 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 __amd64_ASM_H__	29	#ifndef __amd64_ASM_H__
30	#define __amd64_ASM_H__	30	#define __amd64_ASM_H__
31		31
32	#include <arch/types.h>	32	#include <arch/types.h>
33	#include <config.h>	33	#include <config.h>
34		34
35		35
36	void asm_delay_loop(__u32 t);	36	void asm_delay_loop(__u32 t);
-		37	void asm_fake_loop(__u32 t);
-		38
37		39
38	/* TODO: implement the real stuff */	40	/* TODO: implement the real stuff */
39	static inline __address get_stack_base(void)	41	static inline __address get_stack_base(void)
40	{	42	{
41	return NULL;	43	return NULL;
42	}	44	}
43		45
44	static inline void cpu_sleep(void) { __asm__("hlt"); };	46	static inline void cpu_sleep(void) { __asm__("hlt"); };
45		47
46		48
47	static inline __u8 inb(__u16 port)	49	static inline __u8 inb(__u16 port)
48	{	50	{
49	__u8 out;	51	__u8 out;
50		52
51	asm (	53	asm (
52	"mov %0, %%dx;"	54	"mov %0, %%dx;"
53	"inb %%dx,%%al;"	55	"inb %%dx,%%al;"
54	"mov %%al, %1;"	56	"mov %%al, %1;"
55	:"=m"(out)	57	:"=m"(out)
56	:"m"(port)	58	:"m"(port)
57	:"dx","al"	59	:"%dx","%al"
58	);	60	);
59	return out;	61	return out;
60	}	62	}
61		63
62	static inline __u8 outb(__u16 port,__u8 b)	64	static inline __u8 outb(__u16 port,__u8 b)
63	{	65	{
64	asm (	66	asm (
65	"mov %0,%%dx;"	67	"mov %0,%%dx;"
66	"mov %1,%%al;"	68	"mov %1,%%al;"
67	"outb %%al,%%dx;"	69	"outb %%al,%%dx;"
68	:	70	:
69	:"m"( port), "m" (b)	71	:"m"( port), "m" (b)
70	:"dx","al"	72	:"%dx","%al"
71	);	73	);
72	}	74	}
73		75
74	/** Set priority level low	76	/** Set priority level low
75	*	77	*
76	* Enable interrupts and return previous	78	* Enable interrupts and return previous
77	* value of EFLAGS.	79	* value of EFLAGS.
78	*/	80	*/
79	static inline pri_t cpu_priority_low(void) {	81	static inline pri_t cpu_priority_low(void) {
80	pri_t v;	82	pri_t v;
81	__asm__ volatile (	83	__asm__ volatile (
82	"pushfq\n"	84	"pushfq\n"
83	"popq %0\n"	85	"popq %0\n"
84	"sti\n"	86	"sti\n"
85	: "=r" (v)	87	: "=r" (v)
86	);	88	);
87	return v;	89	return v;
88	}	90	}
89		91
90	/** Set priority level high	92	/** Set priority level high
91	*	93	*
92	* Disable interrupts and return previous	94	* Disable interrupts and return previous
93	* value of EFLAGS.	95	* value of EFLAGS.
94	*/	96	*/
95	static inline pri_t cpu_priority_high(void) {	97	static inline pri_t cpu_priority_high(void) {
96	pri_t v;	98	pri_t v;
97	__asm__ volatile (	99	__asm__ volatile (
98	"pushfq\n"	100	"pushfq\n"
99	"popq %0\n"	101	"popq %0\n"
100	"cli\n"	102	"cli\n"
101	: "=r" (v)	103	: "=r" (v)
102	);	104	);
103	return v;	105	return v;
104	}	106	}
105		107
106	/** Restore priority level	108	/** Restore priority level
107	*	109	*
108	* Restore EFLAGS.	110	* Restore EFLAGS.
109	*/	111	*/
110	static inline void cpu_priority_restore(pri_t pri) {	112	static inline void cpu_priority_restore(pri_t pri) {
111	__asm__ volatile (	113	__asm__ volatile (
112	"pushq %0\n"	114	"pushq %0\n"
113	"popfq\n"	115	"popfq\n"
114	: : "r" (pri)	116	: : "r" (pri)
115	);	117	);
116	}	118	}
117		119
-		120	/** Return raw priority level
-		121	*
-		122	* Return EFLAFS.
-		123	*/
-		124	static inline pri_t cpu_priority_read(void) {
-		125	pri_t v;
-		126	__asm__ volatile (
-		127	"pushfq\n"
-		128	"popq %0\n"
-		129	: "=r" (v)
-		130	);
-		131	return v;
-		132	}
-		133
-		134	extern size_t interrupt_handler_size;
-		135	extern void interrupt_handlers(void);
118		136
119	#endif	137	#endif
120		138

Subversion Repositories HelenOS

(root)/trunk/kernel/arch/amd64/include/asm.h @ 2071 – Rev 200 → 206