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.
 */
 
/** @addtogroup amd64  
 * @{
 */
/** @file
 */
 
#ifndef KERN_amd64_ASM_H_
#define KERN_amd64_ASM_H_
 
#include <config.h>
 
extern void asm_delay_loop(uint32_t t);
extern void asm_fake_loop(uint32_t t);
 
/** 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 ("andq %%rsp, %0\n" : "=r" (v) : "0" (~((uint64_t)STACK_SIZE-1)));
   
    return v;
}
 
static inline void cpu_sleep(void)
{
    asm volatile ("hlt\n");
}
 
static inline void cpu_halt(void)
{
    asm volatile ("hlt\n");
}
 
 
/** Byte from port
 *
 * Get byte from port
 *
 * @param port Port to read from
 * @return Value read
 */
static inline uint8_t inb(uint16_t port)
{
    uint8_t val;
 
    asm volatile ("inb %w1, %b0 \n" : "=a" (val) : "d" (port));
    return val;
}
 
/** Byte to port
 *
 * Output byte to port
 *
 * @param port Port to write to
 * @param val Value to write
 */
static inline void outb(uint16_t port, uint8_t val)
{
    asm volatile ("outb %b0, %w1\n" : : "a" (val), "d" (port));
}
 
/** Swap Hidden part of GS register with visible one */
static inline void swapgs(void)
{
    asm volatile("swapgs");
}
 
/** 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 (
        "pushfq\n"
        "popq %0\n"
        "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 (
        "pushfq\n"
        "popq %0\n"
        "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 (
        "pushq %0\n"
        "popfq\n"
        : : "r" (ipl)
        );
}
 
/** Return interrupt priority level.
 *
 * Return EFLAFS.
 *
 * @return Current interrupt priority level.
 */
static inline ipl_t interrupts_read(void) {
    ipl_t v;
    __asm__ volatile (
        "pushfq\n"
        "popq %0\n"
        : "=r" (v)
    );
    return v;
}
 
/** Write to MSR */
static inline void write_msr(uint32_t msr, uint64_t value)
{
    __asm__ volatile (
        "wrmsr;" : : "c" (msr),
        "a" ((uint32_t)(value)),
        "d" ((uint32_t)(value >> 32))
        );
}
 
static inline unative_t read_msr(uint32_t msr)
{
    uint32_t ax, dx;
 
    __asm__ volatile (
        "rdmsr;" : "=a"(ax), "=d"(dx) : "c" (msr)
        );
    return ((uint64_t)dx << 32) | ax;
}
 
 
/** Enable local APIC
 *
 * Enable local APIC in MSR.
 */
static inline void enable_l_apic_in_msr()
{
    __asm__ volatile (
        "movl $0x1b, %%ecx\n"
        "rdmsr\n"
        "orl $(1<<11),%%eax\n"
        "orl $(0xfee00000),%%eax\n"
        "wrmsr\n"
        :
        :
        :"%eax","%ecx","%edx"
        );
}
 
static inline uintptr_t * get_ip()
{
    uintptr_t *ip;
 
    __asm__ volatile (
        "mov %%rip, %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(uintptr_t addr)
{
    __asm__ volatile ("invlpg %0\n" :: "m" (*((unative_t *)addr)));
}
 
/** Load GDTR register from memory.
 *
 * @param gdtr_reg Address of memory from where to load GDTR.
 */
static inline void gdtr_load(struct ptr_16_64 *gdtr_reg)
{
    __asm__ volatile ("lgdtq %0\n" : : "m" (*gdtr_reg));
}
 
/** Store GDTR register to memory.
 *
 * @param gdtr_reg Address of memory to where to load GDTR.
 */
static inline void gdtr_store(struct ptr_16_64 *gdtr_reg)
{
    __asm__ volatile ("sgdtq %0\n" : : "m" (*gdtr_reg));
}
 
/** Load IDTR register from memory.
 *
 * @param idtr_reg Address of memory from where to load IDTR.
 */
static inline void idtr_load(struct ptr_16_64 *idtr_reg)
{
    __asm__ volatile ("lidtq %0\n" : : "m" (*idtr_reg));
}
 
/** Load TR from descriptor table.
 *
 * @param sel Selector specifying descriptor of TSS segment.
 */
static inline void tr_load(uint16_t sel)
{
    __asm__ volatile ("ltr %0" : : "r" (sel));
}
 
#define GEN_READ_REG(reg) static inline unative_t read_ ##reg (void) \
    { \
    unative_t res; \
    __asm__ volatile ("movq %%" #reg ", %0" : "=r" (res) ); \
    return res; \
    }
 
#define GEN_WRITE_REG(reg) static inline void write_ ##reg (unative_t regn) \
    { \
    __asm__ volatile ("movq %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)
 
extern size_t interrupt_handler_size;
extern void interrupt_handlers(void);
 
#endif
 
/** @}
 */
 

Rev 2452	Rev 2453
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	/** @addtogroup amd64	29	/** @addtogroup amd64
30	* @{	30	* @{
31	*/	31	*/
32	/** @file	32	/** @file
33	*/	33	*/
34		34
35	#ifndef KERN_amd64_ASM_H_	35	#ifndef KERN_amd64_ASM_H_
36	#define KERN_amd64_ASM_H_	36	#define KERN_amd64_ASM_H_
37		37
38	#include <config.h>	38	#include <config.h>
39		39
40	extern void asm_delay_loop(uint32_t t);	40	extern void asm_delay_loop(uint32_t t);
41	extern void asm_fake_loop(uint32_t t);	41	extern void asm_fake_loop(uint32_t t);
42		42
43	/** Return base address of current stack.	43	/** Return base address of current stack.
44	*	44	*
45	* Return the base address of the current stack.	45	* Return the base address of the current stack.
46	* The stack is assumed to be STACK_SIZE bytes long.	46	* The stack is assumed to be STACK_SIZE bytes long.
47	* The stack must start on page boundary.	47	* The stack must start on page boundary.
48	*/	48	*/
49	static inline uintptr_t get_stack_base(void)	49	static inline uintptr_t get_stack_base(void)
50	{	50	{
51	uintptr_t v;	51	uintptr_t v;
52		52
53	asm volatile ("andq %%rsp, %0\n" : "=r" (v) : "0" (~((uint64_t)STACK_SIZE-1)));	53	asm volatile ("andq %%rsp, %0\n" : "=r" (v) : "0" (~((uint64_t)STACK_SIZE-1)));
54		54
55	return v;	55	return v;
56	}	56	}
57		57
58	static inline void cpu_sleep(void)	58	static inline void cpu_sleep(void)
59	{	59	{
60	asm volatile ("hlt\n");	60	asm volatile ("hlt\n");
61	};	61	}
62		62
63	static inline void cpu_halt(void)	63	static inline void cpu_halt(void)
64	{	64	{
65	asm volatile ("hlt\n");	65	asm volatile ("hlt\n");
66	};	66	}
67		67
68		68
69	/** Byte from port	69	/** Byte from port
70	*	70	*
71	* Get byte from port	71	* Get byte from port
72	*	72	*
73	* @param port Port to read from	73	* @param port Port to read from
74	* @return Value read	74	* @return Value read
75	*/	75	*/
-		76	static inline uint8_t inb(uint16_t port)
-		77	{
-		78	uint8_t val;
-		79
76	static inline uint8_t inb(uint16_t port) { uint8_t val; __asm__ volatile ("inb %w1, %b0 \n" : "=a" (val) : "d" (port) ); return val; }	80	asm volatile ("inb %w1, %b0 \n" : "=a" (val) : "d" (port));
-		81	return val;
-		82	}
77		83
78	/** Byte to port	84	/** Byte to port
79	*	85	*
80	* Output byte to port	86	* Output byte to port
81	*	87	*
82	* @param port Port to write to	88	* @param port Port to write to
83	* @param val Value to write	89	* @param val Value to write
84	*/	90	*/
-		91	static inline void outb(uint16_t port, uint8_t val)
-		92	{
85	static inline void outb(uint16_t port, uint8_t val) { __asm__ volatile ("outb %b0, %w1\n" : : "a" (val), "d" (port) ); }	93	asm volatile ("outb %b0, %w1\n" : : "a" (val), "d" (port));
-		94	}
86		95
87	/** Swap Hidden part of GS register with visible one */	96	/** Swap Hidden part of GS register with visible one */
88	static inline void swapgs(void) { __asm__ volatile("swapgs"); }	97	static inline void swapgs(void)
-		98	{
-		99	asm volatile("swapgs");
-		100	}
89		101
90	/** Enable interrupts.	102	/** Enable interrupts.
91	*	103	*
92	* Enable interrupts and return previous	104	* Enable interrupts and return previous
93	* value of EFLAGS.	105	* value of EFLAGS.
94	*	106	*
95	* @return Old interrupt priority level.	107	* @return Old interrupt priority level.
96	*/	108	*/
97	static inline ipl_t interrupts_enable(void) {	109	static inline ipl_t interrupts_enable(void) {
98	ipl_t v;	110	ipl_t v;
99	__asm__ volatile (	111	__asm__ volatile (
100	"pushfq\n"	112	"pushfq\n"
101	"popq %0\n"	113	"popq %0\n"
102	"sti\n"	114	"sti\n"
103	: "=r" (v)	115	: "=r" (v)
104	);	116	);
105	return v;	117	return v;
106	}	118	}
107		119
108	/** Disable interrupts.	120	/** Disable interrupts.
109	*	121	*
110	* Disable interrupts and return previous	122	* Disable interrupts and return previous
111	* value of EFLAGS.	123	* value of EFLAGS.
112	*	124	*
113	* @return Old interrupt priority level.	125	* @return Old interrupt priority level.
114	*/	126	*/
115	static inline ipl_t interrupts_disable(void) {	127	static inline ipl_t interrupts_disable(void) {
116	ipl_t v;	128	ipl_t v;
117	__asm__ volatile (	129	__asm__ volatile (
118	"pushfq\n"	130	"pushfq\n"
119	"popq %0\n"	131	"popq %0\n"
120	"cli\n"	132	"cli\n"
121	: "=r" (v)	133	: "=r" (v)
122	);	134	);
123	return v;	135	return v;
124	}	136	}
125		137
126	/** Restore interrupt priority level.	138	/** Restore interrupt priority level.
127	*	139	*
128	* Restore EFLAGS.	140	* Restore EFLAGS.
129	*	141	*
130	* @param ipl Saved interrupt priority level.	142	* @param ipl Saved interrupt priority level.
131	*/	143	*/
132	static inline void interrupts_restore(ipl_t ipl) {	144	static inline void interrupts_restore(ipl_t ipl) {
133	__asm__ volatile (	145	__asm__ volatile (
134	"pushq %0\n"	146	"pushq %0\n"
135	"popfq\n"	147	"popfq\n"
136	: : "r" (ipl)	148	: : "r" (ipl)
137	);	149	);
138	}	150	}
139		151
140	/** Return interrupt priority level.	152	/** Return interrupt priority level.
141	*	153	*
142	* Return EFLAFS.	154	* Return EFLAFS.
143	*	155	*
144	* @return Current interrupt priority level.	156	* @return Current interrupt priority level.
145	*/	157	*/
146	static inline ipl_t interrupts_read(void) {	158	static inline ipl_t interrupts_read(void) {
147	ipl_t v;	159	ipl_t v;
148	__asm__ volatile (	160	__asm__ volatile (
149	"pushfq\n"	161	"pushfq\n"
150	"popq %0\n"	162	"popq %0\n"
151	: "=r" (v)	163	: "=r" (v)
152	);	164	);
153	return v;	165	return v;
154	}	166	}
155		167
156	/** Write to MSR */	168	/** Write to MSR */
157	static inline void write_msr(uint32_t msr, uint64_t value)	169	static inline void write_msr(uint32_t msr, uint64_t value)
158	{	170	{
159	__asm__ volatile (	171	__asm__ volatile (
160	"wrmsr;" : : "c" (msr),	172	"wrmsr;" : : "c" (msr),
161	"a" ((uint32_t)(value)),	173	"a" ((uint32_t)(value)),
162	"d" ((uint32_t)(value >> 32))	174	"d" ((uint32_t)(value >> 32))
163	);	175	);
164	}	176	}
165		177
166	static inline unative_t read_msr(uint32_t msr)	178	static inline unative_t read_msr(uint32_t msr)
167	{	179	{
168	uint32_t ax, dx;	180	uint32_t ax, dx;
169		181
170	__asm__ volatile (	182	__asm__ volatile (
171	"rdmsr;" : "=a"(ax), "=d"(dx) : "c" (msr)	183	"rdmsr;" : "=a"(ax), "=d"(dx) : "c" (msr)
172	);	184	);
173	return ((uint64_t)dx << 32) \| ax;	185	return ((uint64_t)dx << 32) \| ax;
174	}	186	}
175		187
176		188
177	/** Enable local APIC	189	/** Enable local APIC
178	*	190	*
179	* Enable local APIC in MSR.	191	* Enable local APIC in MSR.
180	*/	192	*/
181	static inline void enable_l_apic_in_msr()	193	static inline void enable_l_apic_in_msr()
182	{	194	{
183	__asm__ volatile (	195	__asm__ volatile (
184	"movl $0x1b, %%ecx\n"	196	"movl $0x1b, %%ecx\n"
185	"rdmsr\n"	197	"rdmsr\n"
186	"orl $(1<<11),%%eax\n"	198	"orl $(1<<11),%%eax\n"
187	"orl $(0xfee00000),%%eax\n"	199	"orl $(0xfee00000),%%eax\n"
188	"wrmsr\n"	200	"wrmsr\n"
189	:	201	:
190	:	202	:
191	:"%eax","%ecx","%edx"	203	:"%eax","%ecx","%edx"
192	);	204	);
193	}	205	}
194		206
195	static inline uintptr_t * get_ip()	207	static inline uintptr_t * get_ip()
196	{	208	{
197	uintptr_t *ip;	209	uintptr_t *ip;
198		210
199	__asm__ volatile (	211	__asm__ volatile (
200	"mov %%rip, %0"	212	"mov %%rip, %0"
201	: "=r" (ip)	213	: "=r" (ip)
202	);	214	);
203	return ip;	215	return ip;
204	}	216	}
205		217
206	/** Invalidate TLB Entry.	218	/** Invalidate TLB Entry.
207	*	219	*
208	* @param addr Address on a page whose TLB entry is to be invalidated.	220	* @param addr Address on a page whose TLB entry is to be invalidated.
209	*/	221	*/
210	static inline void invlpg(uintptr_t addr)	222	static inline void invlpg(uintptr_t addr)
211	{	223	{
212	__asm__ volatile ("invlpg %0\n" :: "m" (((unative_t )addr)));	224	__asm__ volatile ("invlpg %0\n" :: "m" (((unative_t )addr)));
213	}	225	}
214		226
215	/** Load GDTR register from memory.	227	/** Load GDTR register from memory.
216	*	228	*
217	* @param gdtr_reg Address of memory from where to load GDTR.	229	* @param gdtr_reg Address of memory from where to load GDTR.
218	*/	230	*/
219	static inline void gdtr_load(struct ptr_16_64 *gdtr_reg)	231	static inline void gdtr_load(struct ptr_16_64 *gdtr_reg)
220	{	232	{
221	__asm__ volatile ("lgdtq %0\n" : : "m" (*gdtr_reg));	233	__asm__ volatile ("lgdtq %0\n" : : "m" (*gdtr_reg));
222	}	234	}
223		235
224	/** Store GDTR register to memory.	236	/** Store GDTR register to memory.
225	*	237	*
226	* @param gdtr_reg Address of memory to where to load GDTR.	238	* @param gdtr_reg Address of memory to where to load GDTR.
227	*/	239	*/
228	static inline void gdtr_store(struct ptr_16_64 *gdtr_reg)	240	static inline void gdtr_store(struct ptr_16_64 *gdtr_reg)
229	{	241	{
230	__asm__ volatile ("sgdtq %0\n" : : "m" (*gdtr_reg));	242	__asm__ volatile ("sgdtq %0\n" : : "m" (*gdtr_reg));
231	}	243	}
232		244
233	/** Load IDTR register from memory.	245	/** Load IDTR register from memory.
234	*	246	*
235	* @param idtr_reg Address of memory from where to load IDTR.	247	* @param idtr_reg Address of memory from where to load IDTR.
236	*/	248	*/
237	static inline void idtr_load(struct ptr_16_64 *idtr_reg)	249	static inline void idtr_load(struct ptr_16_64 *idtr_reg)
238	{	250	{
239	__asm__ volatile ("lidtq %0\n" : : "m" (*idtr_reg));	251	__asm__ volatile ("lidtq %0\n" : : "m" (*idtr_reg));
240	}	252	}
241		253
242	/** Load TR from descriptor table.	254	/** Load TR from descriptor table.
243	*	255	*
244	* @param sel Selector specifying descriptor of TSS segment.	256	* @param sel Selector specifying descriptor of TSS segment.
245	*/	257	*/
246	static inline void tr_load(uint16_t sel)	258	static inline void tr_load(uint16_t sel)
247	{	259	{
248	__asm__ volatile ("ltr %0" : : "r" (sel));	260	__asm__ volatile ("ltr %0" : : "r" (sel));
249	}	261	}
250		262
251	#define GEN_READ_REG(reg) static inline unative_t read_ ##reg (void) \	263	#define GEN_READ_REG(reg) static inline unative_t read_ ##reg (void) \
252	{ \	264	{ \
253	unative_t res; \	265	unative_t res; \
254	__asm__ volatile ("movq %%" #reg ", %0" : "=r" (res) ); \	266	__asm__ volatile ("movq %%" #reg ", %0" : "=r" (res) ); \
255	return res; \	267	return res; \
256	}	268	}
257		269
258	#define GEN_WRITE_REG(reg) static inline void write_ ##reg (unative_t regn) \	270	#define GEN_WRITE_REG(reg) static inline void write_ ##reg (unative_t regn) \
259	{ \	271	{ \
260	__asm__ volatile ("movq %0, %%" #reg : : "r" (regn)); \	272	__asm__ volatile ("movq %0, %%" #reg : : "r" (regn)); \
261	}	273	}
262		274
263	GEN_READ_REG(cr0)	275	GEN_READ_REG(cr0)
264	GEN_READ_REG(cr2)	276	GEN_READ_REG(cr2)
265	GEN_READ_REG(cr3)	277	GEN_READ_REG(cr3)
266	GEN_WRITE_REG(cr3)	278	GEN_WRITE_REG(cr3)
267		279
268	GEN_READ_REG(dr0)	280	GEN_READ_REG(dr0)
269	GEN_READ_REG(dr1)	281	GEN_READ_REG(dr1)
270	GEN_READ_REG(dr2)	282	GEN_READ_REG(dr2)
271	GEN_READ_REG(dr3)	283	GEN_READ_REG(dr3)
272	GEN_READ_REG(dr6)	284	GEN_READ_REG(dr6)
273	GEN_READ_REG(dr7)	285	GEN_READ_REG(dr7)
274		286
275	GEN_WRITE_REG(dr0)	287	GEN_WRITE_REG(dr0)
276	GEN_WRITE_REG(dr1)	288	GEN_WRITE_REG(dr1)
277	GEN_WRITE_REG(dr2)	289	GEN_WRITE_REG(dr2)
278	GEN_WRITE_REG(dr3)	290	GEN_WRITE_REG(dr3)
279	GEN_WRITE_REG(dr6)	291	GEN_WRITE_REG(dr6)
280	GEN_WRITE_REG(dr7)	292	GEN_WRITE_REG(dr7)
281		293
282	extern size_t interrupt_handler_size;	294	extern size_t interrupt_handler_size;
283	extern void interrupt_handlers(void);	295	extern void interrupt_handlers(void);
284		296
285	#endif	297	#endif
286		298
287	/** @}	299	/** @}
288	*/	300	*/
289		301

Subversion Repositories HelenOS

(root)/trunk/kernel/arch/amd64/include/asm.h – Rev 2452 → 2453