WebSVN – HelenOS – Diff – /tags/0.2.0.4/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 2089	Rev 2130
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) { __asm__ volatile ("hlt\n"); };	58	static inline void cpu_sleep(void) { __asm__ volatile ("hlt\n"); };
59	static inline void cpu_halt(void) { __asm__ volatile ("hlt\n"); };	59	static inline void cpu_halt(void) { __asm__ volatile ("hlt\n"); };
60		60
61		61
62	/** Byte from port	62	/** Byte from port
63	*	63	*
64	* Get byte from port	64	* Get byte from port
65	*	65	*
66	* @param port Port to read from	66	* @param port Port to read from
67	* @return Value read	67	* @return Value read
68	*/	68	*/
69	static inline uint8_t inb(uint16_t port) { uint8_t val; __asm__ volatile ("inb %w1, %b0 \n" : "=a" (val) : "d" (port) ); return val; }	69	static inline uint8_t inb(uint16_t port) { uint8_t val; __asm__ volatile ("inb %w1, %b0 \n" : "=a" (val) : "d" (port) ); return val; }
70		70
71	/** Byte to port	71	/** Byte to port
72	*	72	*
73	* Output byte to port	73	* Output byte to port
74	*	74	*
75	* @param port Port to write to	75	* @param port Port to write to
76	* @param val Value to write	76	* @param val Value to write
77	*/	77	*/
78	static inline void outb(uint16_t port, uint8_t val) { __asm__ volatile ("outb %b0, %w1\n" : : "a" (val), "d" (port) ); }	78	static inline void outb(uint16_t port, uint8_t val) { __asm__ volatile ("outb %b0, %w1\n" : : "a" (val), "d" (port) ); }
79		79
80	/** Swap Hidden part of GS register with visible one */	80	/** Swap Hidden part of GS register with visible one */
81	static inline void swapgs(void) { __asm__ volatile("swapgs"); }	81	static inline void swapgs(void) { __asm__ volatile("swapgs"); }
82		82
83	/** Enable interrupts.	83	/** Enable interrupts.
84	*	84	*
85	* Enable interrupts and return previous	85	* Enable interrupts and return previous
86	* value of EFLAGS.	86	* value of EFLAGS.
87	*	87	*
88	* @return Old interrupt priority level.	88	* @return Old interrupt priority level.
89	*/	89	*/
90	static inline ipl_t interrupts_enable(void) {	90	static inline ipl_t interrupts_enable(void) {
91	ipl_t v;	91	ipl_t v;
92	__asm__ volatile (	92	__asm__ volatile (
93	"pushfq\n"	93	"pushfq\n"
94	"popq %0\n"	94	"popq %0\n"
95	"sti\n"	95	"sti\n"
96	: "=r" (v)	96	: "=r" (v)
97	);	97	);
98	return v;	98	return v;
99	}	99	}
100		100
101	/** Disable interrupts.	101	/** Disable interrupts.
102	*	102	*
103	* Disable interrupts and return previous	103	* Disable interrupts and return previous
104	* value of EFLAGS.	104	* value of EFLAGS.
105	*	105	*
106	* @return Old interrupt priority level.	106	* @return Old interrupt priority level.
107	*/	107	*/
108	static inline ipl_t interrupts_disable(void) {	108	static inline ipl_t interrupts_disable(void) {
109	ipl_t v;	109	ipl_t v;
110	__asm__ volatile (	110	__asm__ volatile (
111	"pushfq\n"	111	"pushfq\n"
112	"popq %0\n"	112	"popq %0\n"
113	"cli\n"	113	"cli\n"
114	: "=r" (v)	114	: "=r" (v)
115	);	115	);
116	return v;	116	return v;
117	}	117	}
118		118
119	/** Restore interrupt priority level.	119	/** Restore interrupt priority level.
120	*	120	*
121	* Restore EFLAGS.	121	* Restore EFLAGS.
122	*	122	*
123	* @param ipl Saved interrupt priority level.	123	* @param ipl Saved interrupt priority level.
124	*/	124	*/
125	static inline void interrupts_restore(ipl_t ipl) {	125	static inline void interrupts_restore(ipl_t ipl) {
126	__asm__ volatile (	126	__asm__ volatile (
127	"pushq %0\n"	127	"pushq %0\n"
128	"popfq\n"	128	"popfq\n"
129	: : "r" (ipl)	129	: : "r" (ipl)
130	);	130	);
131	}	131	}
132		132
133	/** Return interrupt priority level.	133	/** Return interrupt priority level.
134	*	134	*
135	* Return EFLAFS.	135	* Return EFLAFS.
136	*	136	*
137	* @return Current interrupt priority level.	137	* @return Current interrupt priority level.
138	*/	138	*/
139	static inline ipl_t interrupts_read(void) {	139	static inline ipl_t interrupts_read(void) {
140	ipl_t v;	140	ipl_t v;
141	__asm__ volatile (	141	__asm__ volatile (
142	"pushfq\n"	142	"pushfq\n"
143	"popq %0\n"	143	"popq %0\n"
144	: "=r" (v)	144	: "=r" (v)
145	);	145	);
146	return v;	146	return v;
147	}	147	}
148		148
149	/** Write to MSR */	149	/** Write to MSR */
150	static inline void write_msr(uint32_t msr, uint64_t value)	150	static inline void write_msr(uint32_t msr, uint64_t value)
151	{	151	{
152	__asm__ volatile (	152	__asm__ volatile (
153	"wrmsr;" : : "c" (msr),	153	"wrmsr;" : : "c" (msr),
154	"a" ((uint32_t)(value)),	154	"a" ((uint32_t)(value)),
155	"d" ((uint32_t)(value >> 32))	155	"d" ((uint32_t)(value >> 32))
156	);	156	);
157	}	157	}
158		158
159	static inline unative_t read_msr(uint32_t msr)	159	static inline unative_t read_msr(uint32_t msr)
160	{	160	{
161	uint32_t ax, dx;	161	uint32_t ax, dx;
162		162
163	__asm__ volatile (	163	__asm__ volatile (
164	"rdmsr;" : "=a"(ax), "=d"(dx) : "c" (msr)	164	"rdmsr;" : "=a"(ax), "=d"(dx) : "c" (msr)
165	);	165	);
166	return ((uint64_t)dx << 32) \| ax;	166	return ((uint64_t)dx << 32) \| ax;
167	}	167	}
168		168
169		169
170	/** Enable local APIC	170	/** Enable local APIC
171	*	171	*
172	* Enable local APIC in MSR.	172	* Enable local APIC in MSR.
173	*/	173	*/
174	static inline void enable_l_apic_in_msr()	174	static inline void enable_l_apic_in_msr()
175	{	175	{
176	__asm__ volatile (	176	__asm__ volatile (
177	"movl $0x1b, %%ecx\n"	177	"movl $0x1b, %%ecx\n"
178	"rdmsr\n"	178	"rdmsr\n"
179	"orl $(1<<11),%%eax\n"	179	"orl $(1<<11),%%eax\n"
180	"orl $(0xfee00000),%%eax\n"	180	"orl $(0xfee00000),%%eax\n"
181	"wrmsr\n"	181	"wrmsr\n"
182	:	182	:
183	:	183	:
184	:"%eax","%ecx","%edx"	184	:"%eax","%ecx","%edx"
185	);	185	);
186	}	186	}
187		187
188	static inline uintptr_t * get_ip()	188	static inline uintptr_t * get_ip()
189	{	189	{
190	uintptr_t *ip;	190	uintptr_t *ip;
191		191
192	__asm__ volatile (	192	__asm__ volatile (
193	"mov %%rip, %0"	193	"mov %%rip, %0"
194	: "=r" (ip)	194	: "=r" (ip)
195	);	195	);
196	return ip;	196	return ip;
197	}	197	}
198		198
199	/** Invalidate TLB Entry.	199	/** Invalidate TLB Entry.
200	*	200	*
201	* @param addr Address on a page whose TLB entry is to be invalidated.	201	* @param addr Address on a page whose TLB entry is to be invalidated.
202	*/	202	*/
203	static inline void invlpg(uintptr_t addr)	203	static inline void invlpg(uintptr_t addr)
204	{	204	{
205	__asm__ volatile ("invlpg %0\n" :: "m" (((unative_t )addr)));	205	__asm__ volatile ("invlpg %0\n" :: "m" (((unative_t )addr)));
206	}	206	}
207		207
208	/** Load GDTR register from memory.	208	/** Load GDTR register from memory.
209	*	209	*
210	* @param gdtr_reg Address of memory from where to load GDTR.	210	* @param gdtr_reg Address of memory from where to load GDTR.
211	*/	211	*/
212	static inline void gdtr_load(struct ptr_16_64 *gdtr_reg)	212	static inline void gdtr_load(struct ptr_16_64 *gdtr_reg)
213	{	213	{
214	__asm__ volatile ("lgdtq %0\n" : : "m" (*gdtr_reg));	214	__asm__ volatile ("lgdtq %0\n" : : "m" (*gdtr_reg));
215	}	215	}
216		216
217	/** Store GDTR register to memory.	217	/** Store GDTR register to memory.
218	*	218	*
219	* @param gdtr_reg Address of memory to where to load GDTR.	219	* @param gdtr_reg Address of memory to where to load GDTR.
220	*/	220	*/
221	static inline void gdtr_store(struct ptr_16_64 *gdtr_reg)	221	static inline void gdtr_store(struct ptr_16_64 *gdtr_reg)
222	{	222	{
223	__asm__ volatile ("sgdtq %0\n" : : "m" (*gdtr_reg));	223	__asm__ volatile ("sgdtq %0\n" : : "m" (*gdtr_reg));
224	}	224	}
225		225
226	/** Load IDTR register from memory.	226	/** Load IDTR register from memory.
227	*	227	*
228	* @param idtr_reg Address of memory from where to load IDTR.	228	* @param idtr_reg Address of memory from where to load IDTR.
229	*/	229	*/
230	static inline void idtr_load(struct ptr_16_64 *idtr_reg)	230	static inline void idtr_load(struct ptr_16_64 *idtr_reg)
231	{	231	{
232	__asm__ volatile ("lidtq %0\n" : : "m" (*idtr_reg));	232	__asm__ volatile ("lidtq %0\n" : : "m" (*idtr_reg));
233	}	233	}
234		234
235	/** Load TR from descriptor table.	235	/** Load TR from descriptor table.
236	*	236	*
237	* @param sel Selector specifying descriptor of TSS segment.	237	* @param sel Selector specifying descriptor of TSS segment.
238	*/	238	*/
239	static inline void tr_load(uint16_t sel)	239	static inline void tr_load(uint16_t sel)
240	{	240	{
241	__asm__ volatile ("ltr %0" : : "r" (sel));	241	__asm__ volatile ("ltr %0" : : "r" (sel));
242	}	242	}
243		243
244	#define GEN_READ_REG(reg) static inline unative_t read_ ##reg (void) \	244	#define GEN_READ_REG(reg) static inline unative_t read_ ##reg (void) \
245	{ \	245	{ \
246	unative_t res; \	246	unative_t res; \
247	__asm__ volatile ("movq %%" #reg ", %0" : "=r" (res) ); \	247	__asm__ volatile ("movq %%" #reg ", %0" : "=r" (res) ); \
248	return res; \	248	return res; \
249	}	249	}
250		250
251	#define GEN_WRITE_REG(reg) static inline void write_ ##reg (unative_t regn) \	251	#define GEN_WRITE_REG(reg) static inline void write_ ##reg (unative_t regn) \
252	{ \	252	{ \
253	__asm__ volatile ("movq %0, %%" #reg : : "r" (regn)); \	253	__asm__ volatile ("movq %0, %%" #reg : : "r" (regn)); \
254	}	254	}
255		255
256	GEN_READ_REG(cr0);	256	GEN_READ_REG(cr0);
257	GEN_READ_REG(cr2);	257	GEN_READ_REG(cr2);
258	GEN_READ_REG(cr3);	258	GEN_READ_REG(cr3);
259	GEN_WRITE_REG(cr3);	259	GEN_WRITE_REG(cr3);
260		260
261	GEN_READ_REG(dr0);	261	GEN_READ_REG(dr0);
262	GEN_READ_REG(dr1);	262	GEN_READ_REG(dr1);
263	GEN_READ_REG(dr2);	263	GEN_READ_REG(dr2);
264	GEN_READ_REG(dr3);	264	GEN_READ_REG(dr3);
265	GEN_READ_REG(dr6);	265	GEN_READ_REG(dr6);
266	GEN_READ_REG(dr7);	266	GEN_READ_REG(dr7);
267		267
268	GEN_WRITE_REG(dr0);	268	GEN_WRITE_REG(dr0);
269	GEN_WRITE_REG(dr1);	269	GEN_WRITE_REG(dr1);
270	GEN_WRITE_REG(dr2);	270	GEN_WRITE_REG(dr2);
271	GEN_WRITE_REG(dr3);	271	GEN_WRITE_REG(dr3);
272	GEN_WRITE_REG(dr6);	272	GEN_WRITE_REG(dr6);
273	GEN_WRITE_REG(dr7);	273	GEN_WRITE_REG(dr7);
274		274
275	extern size_t interrupt_handler_size;	275	extern size_t interrupt_handler_size;
276	extern void interrupt_handlers(void);	276	extern void interrupt_handlers(void);
277		277
278	#endif	278	#endif
279		279
280	/** @}	280	/** @}
281	*/	281	*/
282		282

Subversion Repositories HelenOS

(root)/tags/0.2.0.4/kernel/arch/amd64/include/asm.h – Rev 2089 → 2130