WebSVN – HelenOS – Diff – /kernel/trunk/arch/ia32/include/asm.h


/*
 * Copyright (C) 2001-2004 Jakub Jermar
 * Copyright (C) 2005 Sergey Bondari
 * 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 <config.h>
 
extern __u32 interrupt_handler_size;
 
extern void paging_on(void);
 
extern void interrupt_handlers(void);
 
extern void enable_l_apic_in_msr(void);
 
 
extern void asm_delay_loop(__u32 t);
extern void asm_fake_loop(__u32 t);
 
 
/** Halt CPU
 *
 * Halt the current CPU until interrupt event.
 */
static inline void cpu_halt(void) { __asm__("hlt\n"); };
static inline void cpu_sleep(void) { __asm__("hlt\n"); };
 
#define GEN_READ_REG(reg) static inline __native read_ ##reg (void) \
    { \
    __native res; \
 
    __asm__ volatile ("movl %%" #reg ", %0" : "=r" (res) ); \
    return res; \
    }
 
 
 
 
#define GEN_WRITE_REG(reg) static inline void write_ ##reg (__native regn) \
    { \
    __asm__ volatile ("movl %0, %%" #reg : : "r" (regn)); \
    }
 
 
GEN_READ_REG(cr0);
GEN_READ_REG(cr2);
GEN_READ_REG(cr3);
GEN_WRITE_REG(cr3);
 
GEN_READ_REG(dr0);
GEN_READ_REG(dr1);
GEN_READ_REG(dr2);
GEN_READ_REG(dr3);
GEN_READ_REG(dr6);
GEN_READ_REG(dr7);
 
GEN_WRITE_REG(dr0);
GEN_WRITE_REG(dr1);
GEN_WRITE_REG(dr2);
GEN_WRITE_REG(dr3);
GEN_WRITE_REG(dr6);
GEN_WRITE_REG(dr7);
 
/** Byte to port
 *
 * Output byte to port
 *
 * @param port Port to write to
 * @param val Value to write
 */
static inline void outb(__u16 port, __u8 val) { __asm__ volatile ("outb %b0, %w1\n" : : "a" (val), "d" (port) ); }
 
/** Word to port
 *
 * Output word to port
 *
 * @param port Port to write to
 * @param val Value to write
 */
static inline void outw(__u16 port, __u16 val) { __asm__ volatile ("outw %w0, %w1\n" : : "a" (val), "d" (port) ); }
 
/** Double word to port
 *
 * Output double word to port
 *
 * @param port Port to write to
 * @param val Value to write
 */
static inline void outl(__u16 port, __u32 val) { __asm__ volatile ("outl %l0, %w1\n" : : "a" (val), "d" (port) ); }
 
/** Byte from port
 *
 * Get byte from port
 *
 * @param port Port to read from
 * @return Value read
 */
static inline __u8 inb(__u16 port) { __u8 val; __asm__ volatile ("inb %w1, %b0 \n" : "=a" (val) : "d" (port) ); return val; }
 
/** Word from port
 *
 * Get word from port
 *
 * @param port Port to read from
 * @return Value read
 */
static inline __u16 inw(__u16 port) { __u16 val; __asm__ volatile ("inw %w1, %w0 \n" : "=a" (val) : "d" (port) ); return val; }
 
/** Double word from port
 *
 * Get double word from port
 *
 * @param port Port to read from
 * @return Value read
 */
static inline __u32 inl(__u16 port) { __u32 val; __asm__ volatile ("inl %w1, %l0 \n" : "=a" (val) : "d" (port) ); return val; }
 
/** Enable interrupts.
 *
 * Enable interrupts and return previous
 * value of EFLAGS.
 *
 * @return Old interrupt priority level.
 */
static inline ipl_t interrupts_enable(void)
{
    ipl_t v;
    __asm__ volatile (
        "pushf\n\t"
        "popl %0\n\t"
        "sti\n"
        : "=r" (v)
    );
    return v;
}
 
/** Disable interrupts.
 *
 * Disable interrupts and return previous
 * value of EFLAGS.
 *
 * @return Old interrupt priority level.
 */
static inline ipl_t interrupts_disable(void)
{
    ipl_t v;
    __asm__ volatile (
        "pushf\n\t"
        "popl %0\n\t"
        "cli\n"
        : "=r" (v)
    );
    return v;
}
 
/** Restore interrupt priority level.
 *
 * Restore EFLAGS.
 *
 * @param ipl Saved interrupt priority level.
 */
static inline void interrupts_restore(ipl_t ipl)
{
    __asm__ volatile (
        "pushl %0\n\t"
        "popf\n"
        : : "r" (ipl)
    );
}
 
/** Return interrupt priority level.
 *
 * @return EFLAFS.
 */
static inline ipl_t interrupts_read(void)
{
    ipl_t v;
    __asm__ volatile (
        "pushf\n\t"
        "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;
}
 
static inline __u64 rdtsc(void)
{
    __u64 v;
   
    __asm__ volatile("rdtsc\n" : "=A" (v));
   
    return v;
}
 
/** Return current IP address */
static inline __address * get_ip()
{
    __address *ip;
 
    __asm__ volatile (
        "mov %%eip, %0"
        : "=r" (ip)
        );
    return ip;
}
 
/** Invalidate TLB Entry.
 *
 * @param addr Address on a page whose TLB entry is to be invalidated.
 */
static inline void invlpg(__address addr)
{
    __asm__ volatile ("invlpg %0\n" :: "m" (*(__native *)addr));
}
 
#endif
 

Rev 984	Rev 1074
1	/*	1	/*
2	* Copyright (C) 2001-2004 Jakub Jermar	2	* Copyright (C) 2001-2004 Jakub Jermar
3	* Copyright (C) 2005 Sergey Bondari	3	* Copyright (C) 2005 Sergey Bondari
4	* All rights reserved.	4	* All rights reserved.
5	*	5	*
6	* Redistribution and use in source and binary forms, with or without	6	* Redistribution and use in source and binary forms, with or without
7	* modification, are permitted provided that the following conditions	7	* modification, are permitted provided that the following conditions
8	* are met:	8	* are met:
9	*	9	*
10	* - Redistributions of source code must retain the above copyright	10	* - Redistributions of source code must retain the above copyright
11	* notice, this list of conditions and the following disclaimer.	11	* notice, this list of conditions and the following disclaimer.
12	* - Redistributions in binary form must reproduce the above copyright	12	* - Redistributions in binary form must reproduce the above copyright
13	* notice, this list of conditions and the following disclaimer in the	13	* notice, this list of conditions and the following disclaimer in the
14	* documentation and/or other materials provided with the distribution.	14	* documentation and/or other materials provided with the distribution.
15	* - The name of the author may not be used to endorse or promote products	15	* - The name of the author may not be used to endorse or promote products
16	* derived from this software without specific prior written permission.	16	* derived from this software without specific prior written permission.
17	*	17	*
18	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR	18	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES	19	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.	20	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,	21	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT	22	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,	23	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	24	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	25	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF	26	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	27	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28	*/	28	*/
29		29
30	#ifndef __ia32_ASM_H__	30	#ifndef __ia32_ASM_H__
31	#define __ia32_ASM_H__	31	#define __ia32_ASM_H__
32		32
33	#include <arch/types.h>	33	#include <arch/types.h>
34	#include <config.h>	34	#include <config.h>
35		35
36	extern __u32 interrupt_handler_size;	36	extern __u32 interrupt_handler_size;
37		37
38	extern void paging_on(void);	38	extern void paging_on(void);
39		39
40	extern void interrupt_handlers(void);	40	extern void interrupt_handlers(void);
41		41
42	extern void enable_l_apic_in_msr(void);	42	extern void enable_l_apic_in_msr(void);
43		43
44		44
45	extern void asm_delay_loop(__u32 t);	45	extern void asm_delay_loop(__u32 t);
46	extern void asm_fake_loop(__u32 t);	46	extern void asm_fake_loop(__u32 t);
47		47
48		48
49	/** Halt CPU	49	/** Halt CPU
50	*	50	*
51	* Halt the current CPU until interrupt event.	51	* Halt the current CPU until interrupt event.
52	*/	52	*/
53	static inline void cpu_halt(void) { __asm__("hlt\n"); };	53	static inline void cpu_halt(void) { __asm__("hlt\n"); };
54	static inline void cpu_sleep(void) { __asm__("hlt\n"); };	54	static inline void cpu_sleep(void) { __asm__("hlt\n"); };
55		55
56	/** Read CR2	56	#define GEN_READ_REG(reg) static inline __native read_ ##reg (void) \
57	*	57	{ \
58	* Return value in CR2	58	__native res; \
59	*	-
-		59	__asm__ volatile ("movl %%" #reg ", %0" : "=r" (res) ); \
60	* @return Value read.	60	return res; \
61	*/	61	}
62	static inline __u32 read_cr2(void) { __u32 v; __asm__ volatile ("movl %%cr2,%0\n" : "=r" (v)); return v; }	-
63		62
64	/** Write CR3	-
65	*	-
66	* Write value to CR3.	63	#define GEN_WRITE_REG(reg) static inline void write_ ##reg (__native regn) \
67	*	64	{ \
68	* @param v Value to be written.	65	__asm__ volatile ("movl %0, %%" #reg : : "r" (regn)); \
69	*/	66	}
70	static inline void write_cr3(__u32 v) { __asm__ volatile ("movl %0,%%cr3\n" : : "r" (v)); }	-
71		67
-		68	GEN_READ_REG(cr0);
-		69	GEN_READ_REG(cr2);
72	/** Read CR3	70	GEN_READ_REG(cr3);
-		71	GEN_WRITE_REG(cr3);
73	*	72
-		73	GEN_READ_REG(dr0);
-		74	GEN_READ_REG(dr1);
-		75	GEN_READ_REG(dr2);
-		76	GEN_READ_REG(dr3);
-		77	GEN_READ_REG(dr6);
74	* Return value in CR3	78	GEN_READ_REG(dr7);
75	*	79
-		80	GEN_WRITE_REG(dr0);
76	* @return Value read.	81	GEN_WRITE_REG(dr1);
77	*/	82	GEN_WRITE_REG(dr2);
78	static inline __u32 read_cr3(void) { __u32 v; __asm__ volatile ("movl %%cr3,%0\n" : "=r" (v)); return v; }	83	GEN_WRITE_REG(dr3);
-		84	GEN_WRITE_REG(dr6);
-		85	GEN_WRITE_REG(dr7);
79		86
80	/** Byte to port	87	/** Byte to port
81	*	88	*
82	* Output byte to port	89	* Output byte to port
83	*	90	*
84	* @param port Port to write to	91	* @param port Port to write to
85	* @param val Value to write	92	* @param val Value to write
86	*/	93	*/
87	static inline void outb(__u16 port, __u8 val) { __asm__ volatile ("outb %b0, %w1\n" : : "a" (val), "d" (port) ); }	94	static inline void outb(__u16 port, __u8 val) { __asm__ volatile ("outb %b0, %w1\n" : : "a" (val), "d" (port) ); }
88		95
89	/** Word to port	96	/** Word to port
90	*	97	*
91	* Output word to port	98	* Output word to port
92	*	99	*
93	* @param port Port to write to	100	* @param port Port to write to
94	* @param val Value to write	101	* @param val Value to write
95	*/	102	*/
96	static inline void outw(__u16 port, __u16 val) { __asm__ volatile ("outw %w0, %w1\n" : : "a" (val), "d" (port) ); }	103	static inline void outw(__u16 port, __u16 val) { __asm__ volatile ("outw %w0, %w1\n" : : "a" (val), "d" (port) ); }
97		104
98	/** Double word to port	105	/** Double word to port
99	*	106	*
100	* Output double word to port	107	* Output double word to port
101	*	108	*
102	* @param port Port to write to	109	* @param port Port to write to
103	* @param val Value to write	110	* @param val Value to write
104	*/	111	*/
105	static inline void outl(__u16 port, __u32 val) { __asm__ volatile ("outl %l0, %w1\n" : : "a" (val), "d" (port) ); }	112	static inline void outl(__u16 port, __u32 val) { __asm__ volatile ("outl %l0, %w1\n" : : "a" (val), "d" (port) ); }
106		113
107	/** Byte from port	114	/** Byte from port
108	*	115	*
109	* Get byte from port	116	* Get byte from port
110	*	117	*
111	* @param port Port to read from	118	* @param port Port to read from
112	* @return Value read	119	* @return Value read
113	*/	120	*/
114	static inline __u8 inb(__u16 port) { __u8 val; __asm__ volatile ("inb %w1, %b0 \n" : "=a" (val) : "d" (port) ); return val; }	121	static inline __u8 inb(__u16 port) { __u8 val; __asm__ volatile ("inb %w1, %b0 \n" : "=a" (val) : "d" (port) ); return val; }
115		122
116	/** Word from port	123	/** Word from port
117	*	124	*
118	* Get word from port	125	* Get word from port
119	*	126	*
120	* @param port Port to read from	127	* @param port Port to read from
121	* @return Value read	128	* @return Value read
122	*/	129	*/
123	static inline __u16 inw(__u16 port) { __u16 val; __asm__ volatile ("inw %w1, %w0 \n" : "=a" (val) : "d" (port) ); return val; }	130	static inline __u16 inw(__u16 port) { __u16 val; __asm__ volatile ("inw %w1, %w0 \n" : "=a" (val) : "d" (port) ); return val; }
124		131
125	/** Double word from port	132	/** Double word from port
126	*	133	*
127	* Get double word from port	134	* Get double word from port
128	*	135	*
129	* @param port Port to read from	136	* @param port Port to read from
130	* @return Value read	137	* @return Value read
131	*/	138	*/
132	static inline __u32 inl(__u16 port) { __u32 val; __asm__ volatile ("inl %w1, %l0 \n" : "=a" (val) : "d" (port) ); return val; }	139	static inline __u32 inl(__u16 port) { __u32 val; __asm__ volatile ("inl %w1, %l0 \n" : "=a" (val) : "d" (port) ); return val; }
133		140
134	/** Enable interrupts.	141	/** Enable interrupts.
135	*	142	*
136	* Enable interrupts and return previous	143	* Enable interrupts and return previous
137	* value of EFLAGS.	144	* value of EFLAGS.
138	*	145	*
139	* @return Old interrupt priority level.	146	* @return Old interrupt priority level.
140	*/	147	*/
141	static inline ipl_t interrupts_enable(void)	148	static inline ipl_t interrupts_enable(void)
142	{	149	{
143	ipl_t v;	150	ipl_t v;
144	__asm__ volatile (	151	__asm__ volatile (
145	"pushf\n\t"	152	"pushf\n\t"
146	"popl %0\n\t"	153	"popl %0\n\t"
147	"sti\n"	154	"sti\n"
148	: "=r" (v)	155	: "=r" (v)
149	);	156	);
150	return v;	157	return v;
151	}	158	}
152		159
153	/** Disable interrupts.	160	/** Disable interrupts.
154	*	161	*
155	* Disable interrupts and return previous	162	* Disable interrupts and return previous
156	* value of EFLAGS.	163	* value of EFLAGS.
157	*	164	*
158	* @return Old interrupt priority level.	165	* @return Old interrupt priority level.
159	*/	166	*/
160	static inline ipl_t interrupts_disable(void)	167	static inline ipl_t interrupts_disable(void)
161	{	168	{
162	ipl_t v;	169	ipl_t v;
163	__asm__ volatile (	170	__asm__ volatile (
164	"pushf\n\t"	171	"pushf\n\t"
165	"popl %0\n\t"	172	"popl %0\n\t"
166	"cli\n"	173	"cli\n"
167	: "=r" (v)	174	: "=r" (v)
168	);	175	);
169	return v;	176	return v;
170	}	177	}
171		178
172	/** Restore interrupt priority level.	179	/** Restore interrupt priority level.
173	*	180	*
174	* Restore EFLAGS.	181	* Restore EFLAGS.
175	*	182	*
176	* @param ipl Saved interrupt priority level.	183	* @param ipl Saved interrupt priority level.
177	*/	184	*/
178	static inline void interrupts_restore(ipl_t ipl)	185	static inline void interrupts_restore(ipl_t ipl)
179	{	186	{
180	__asm__ volatile (	187	__asm__ volatile (
181	"pushl %0\n\t"	188	"pushl %0\n\t"
182	"popf\n"	189	"popf\n"
183	: : "r" (ipl)	190	: : "r" (ipl)
184	);	191	);
185	}	192	}
186		193
187	/** Return interrupt priority level.	194	/** Return interrupt priority level.
188	*	195	*
189	* @return EFLAFS.	196	* @return EFLAFS.
190	*/	197	*/
191	static inline ipl_t interrupts_read(void)	198	static inline ipl_t interrupts_read(void)
192	{	199	{
193	ipl_t v;	200	ipl_t v;
194	__asm__ volatile (	201	__asm__ volatile (
195	"pushf\n\t"	202	"pushf\n\t"
196	"popl %0\n"	203	"popl %0\n"
197	: "=r" (v)	204	: "=r" (v)
198	);	205	);
199	return v;	206	return v;
200	}	207	}
201		208
202	/** Return base address of current stack	209	/** Return base address of current stack
203	*	210	*
204	* Return the base address of the current stack.	211	* Return the base address of the current stack.
205	* The stack is assumed to be STACK_SIZE bytes long.	212	* The stack is assumed to be STACK_SIZE bytes long.
206	* The stack must start on page boundary.	213	* The stack must start on page boundary.
207	*/	214	*/
208	static inline __address get_stack_base(void)	215	static inline __address get_stack_base(void)
209	{	216	{
210	__address v;	217	__address v;
211		218
212	__asm__ volatile ("andl %%esp, %0\n" : "=r" (v) : "0" (~(STACK_SIZE-1)));	219	__asm__ volatile ("andl %%esp, %0\n" : "=r" (v) : "0" (~(STACK_SIZE-1)));
213		220
214	return v;	221	return v;
215	}	222	}
216		223
217	static inline __u64 rdtsc(void)	224	static inline __u64 rdtsc(void)
218	{	225	{
219	__u64 v;	226	__u64 v;
220		227
221	__asm__ volatile("rdtsc\n" : "=A" (v));	228	__asm__ volatile("rdtsc\n" : "=A" (v));
222		229
223	return v;	230	return v;
224	}	231	}
225		232
226	/** Return current IP address */	233	/** Return current IP address */
227	static inline __address * get_ip()	234	static inline __address * get_ip()
228	{	235	{
229	__address *ip;	236	__address *ip;
230		237
231	__asm__ volatile (	238	__asm__ volatile (
232	"mov %%eip, %0"	239	"mov %%eip, %0"
233	: "=r" (ip)	240	: "=r" (ip)
234	);	241	);
235	return ip;	242	return ip;
236	}	243	}
237		244
238	/** Invalidate TLB Entry.	245	/** Invalidate TLB Entry.
239	*	246	*
240	* @param addr Address on a page whose TLB entry is to be invalidated.	247	* @param addr Address on a page whose TLB entry is to be invalidated.
241	*/	248	*/
242	static inline void invlpg(__address addr)	249	static inline void invlpg(__address addr)
243	{	250	{
244	__asm__ volatile ("invlpg %0\n" :: "m" ((__native )addr));	251	__asm__ volatile ("invlpg %0\n" :: "m" ((__native )addr));
245	}	252	}
246		253
247	#endif	254	#endif
248		255

Subversion Repositories HelenOS

(root)/kernel/trunk/arch/ia32/include/asm.h – Rev 984 → 1074