WebSVN – HelenOS – Diff – /branches/dynload/kernel/arch/amd64/src/amd64.c


/*
 * Copyright (c) 2005 Ondrej Palkovsky
 * 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
 */
 
#include <arch.h>
 
#include <arch/types.h>
 
#include <config.h>
 
#include <proc/thread.h>
#include <genarch/multiboot/multiboot.h>
#include <genarch/drivers/legacy/ia32/io.h>
#include <genarch/drivers/ega/ega.h>
#include <arch/drivers/vesa.h>
#include <genarch/drivers/i8042/i8042.h>
#include <genarch/kbrd/kbrd.h>
#include <arch/drivers/i8254.h>
#include <arch/drivers/i8259.h>
#include <arch/boot/boot.h>
 
#ifdef CONFIG_SMP
#include <arch/smp/apic.h>
#endif
 
#include <arch/bios/bios.h>
#include <arch/cpu.h>
#include <print.h>
#include <arch/cpuid.h>
#include <genarch/acpi/acpi.h>
#include <panic.h>
#include <interrupt.h>
#include <arch/syscall.h>
#include <arch/debugger.h>
#include <syscall/syscall.h>
#include <console/console.h>
#include <ddi/irq.h>
 
#include <sysinfo/sysinfo.h>
 
/** Disable I/O on non-privileged levels
 *
 * Clean IOPL(12,13) and NT(14) flags in EFLAGS register
 */
static void clean_IOPL_NT_flags(void)
{
    asm volatile (
        "pushfq\n"
        "pop %%rax\n"
        "and $~(0x7000), %%rax\n"
        "pushq %%rax\n"
        "popfq\n"
        ::: "%rax"
    );
}
 
/** Disable alignment check
 *
 * Clean AM(18) flag in CR0 register
 */
static void clean_AM_flag(void)
{
    asm volatile (
        "mov %%cr0, %%rax\n"
        "and $~(0x40000), %%rax\n"
        "mov %%rax, %%cr0\n"
        ::: "%rax"
    );
}
 
/** Perform amd64-specific initialization before main_bsp() is called.
 *
 * @param signature Should contain the multiboot signature.
 * @param mi        Pointer to the multiboot information structure.
 */
void arch_pre_main(uint32_t signature, const multiboot_info_t *mi)
{
    /* Parse multiboot information obtained from the bootloader. */
    multiboot_info_parse(signature, mi);
   
#ifdef CONFIG_SMP
    /* Copy AP bootstrap routines below 1 MB. */
    memcpy((void *) AP_BOOT_OFFSET, (void *) BOOT_OFFSET,
        (size_t) &_hardcoded_unmapped_size);
#endif
}
 
void arch_pre_mm_init(void)
{
    /* Enable no-execute pages */
    set_efer_flag(AMD_NXE_FLAG);
    /* Enable FPU */
    cpu_setup_fpu();
 
    /* Initialize segmentation */
    pm_init();
   
    /* Disable I/O on nonprivileged levels
     * clear the NT (nested-thread) flag
     */
    clean_IOPL_NT_flags();
    /* Disable alignment check */
    clean_AM_flag();
 
    if (config.cpu_active == 1) {
        interrupt_init();
        bios_init();
       
        /* PIC */
        i8259_init();
    }
}
 
 
void arch_post_mm_init(void)
{
    if (config.cpu_active == 1) {
        /* Initialize IRQ routing */
        irq_init(IRQ_COUNT, IRQ_COUNT);
       
        /* hard clock */
        i8254_init();
       
#ifdef CONFIG_FB
        if (vesa_present())
            vesa_init();
        else
#endif
#ifdef CONFIG_EGA
            ega_init(EGA_BASE, EGA_VIDEORAM);  /* video */
#else
            {}
#endif
       
        /* Enable debugger */
        debugger_init();
        /* Merge all memory zones to 1 big zone */
        zone_merge_all();
    }
   
    /* Setup fast SYSCALL/SYSRET */
    syscall_setup_cpu();
}
 
void arch_post_cpu_init()
{
#ifdef CONFIG_SMP
    if (config.cpu_active > 1) {
        l_apic_init();
        l_apic_debug();
    }
#endif
}
 
void arch_pre_smp_init(void)
{
    if (config.cpu_active == 1) {
#ifdef CONFIG_SMP
        acpi_init();
#endif /* CONFIG_SMP */
    }
}
 
void arch_post_smp_init(void)
{
#ifdef CONFIG_PC_KBD
 
 
    /*
     * Initialize the i8042 controller. Then initialize the keyboard
     * module and connect it to i8042. Enable keyboard interrupts.
     */
    indev_t *kbrdin = i8042_init((i8042_t *) I8042_BASE, IRQ_KBD);
    if (kbrdin) {
        kbrd_init(kbrdin);
        trap_virtual_enable_irqs(1 << IRQ_KBD);
    }
   
    /*
     * This is the necessary evil until the userspace driver is entirely
     * self-sufficient.
     */
    sysinfo_set_item_val("kbd", NULL, true);
 
    sysinfo_set_item_val("kbd.inr", NULL, IRQ_KBD);
    sysinfo_set_item_val("kbd.address.physical", NULL,
        (uintptr_t) I8042_BASE);
    sysinfo_set_item_val("kbd.address.kernel", NULL,
        (uintptr_t) I8042_BASE);
#endif
}
 
void calibrate_delay_loop(void)
{
    i8254_calibrate_delay_loop();
    if (config.cpu_active == 1) {
        /*
         * This has to be done only on UP.
         * On SMP, i8254 is not used for time keeping and its interrupt pin remains masked.
         */
        i8254_normal_operation();
    }
}
 
/** Set thread-local-storage pointer
 *
 * TLS pointer is set in FS register. Unfortunately the 64-bit
 * part can be set only in CPL0 mode.
 *
 * The specs say, that on %fs:0 there is stored contents of %fs register,
 * we need not to go to CPL0 to read it.
 */
unative_t sys_tls_set(unative_t addr)
{
    THREAD->arch.tls = addr;
    write_msr(AMD_MSR_FS, addr);
    return 0;
}
 
/** Acquire console back for kernel
 *
 */
void arch_grab_console(void)
{
#ifdef CONFIG_FB
    if (vesa_present())
        vesa_redraw();
    else
#endif
#ifdef CONFIG_EGA
        ega_redraw();
#else
        {}
#endif
}
 
/** Return console to userspace
 *
 */
void arch_release_console(void)
{
}
 
/** Construct function pointer
 *
 * @param fptr   function pointer structure
 * @param addr   function address
 * @param caller calling function address
 *
 * @return address of the function pointer
 *
 */
void *arch_construct_function(fncptr_t *fptr, void *addr, void *caller)
{
    return addr;
}
 
/** @}
 */
 

Rev 4346	Rev 4347
1	/*	1	/*
2	* Copyright (c) 2005 Ondrej Palkovsky	2	* Copyright (c) 2005 Ondrej Palkovsky
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	#include <arch.h>	35	#include <arch.h>
36		36
37	#include <arch/types.h>	37	#include <arch/types.h>
38		38
39	#include <config.h>	39	#include <config.h>
40		40
41	#include <proc/thread.h>	41	#include <proc/thread.h>
42	#include <genarch/multiboot/multiboot.h>	42	#include <genarch/multiboot/multiboot.h>
43	#include <genarch/drivers/legacy/ia32/io.h>	43	#include <genarch/drivers/legacy/ia32/io.h>
44	#include <genarch/drivers/ega/ega.h>	44	#include <genarch/drivers/ega/ega.h>
45	#include <arch/drivers/vesa.h>	45	#include <arch/drivers/vesa.h>
46	#include <genarch/drivers/i8042/i8042.h>	46	#include <genarch/drivers/i8042/i8042.h>
47	#include <genarch/kbrd/kbrd.h>	47	#include <genarch/kbrd/kbrd.h>
48	#include <arch/drivers/i8254.h>	48	#include <arch/drivers/i8254.h>
49	#include <arch/drivers/i8259.h>	49	#include <arch/drivers/i8259.h>
50	#include <arch/boot/boot.h>	50	#include <arch/boot/boot.h>
51		51
52	#ifdef CONFIG_SMP	52	#ifdef CONFIG_SMP
53	#include <arch/smp/apic.h>	53	#include <arch/smp/apic.h>
54	#endif	54	#endif
55		55
56	#include <arch/bios/bios.h>	56	#include <arch/bios/bios.h>
57	#include <arch/cpu.h>	57	#include <arch/cpu.h>
58	#include <print.h>	58	#include <print.h>
59	#include <arch/cpuid.h>	59	#include <arch/cpuid.h>
60	#include <genarch/acpi/acpi.h>	60	#include <genarch/acpi/acpi.h>
61	#include <panic.h>	61	#include <panic.h>
62	#include <interrupt.h>	62	#include <interrupt.h>
63	#include <arch/syscall.h>	63	#include <arch/syscall.h>
64	#include <arch/debugger.h>	64	#include <arch/debugger.h>
65	#include <syscall/syscall.h>	65	#include <syscall/syscall.h>
66	#include <console/console.h>	66	#include <console/console.h>
67	#include <ddi/irq.h>	67	#include <ddi/irq.h>
68	#include <ddi/device.h>	-
69	#include <sysinfo/sysinfo.h>	68	#include <sysinfo/sysinfo.h>
70		69
71	/** Disable I/O on non-privileged levels	70	/** Disable I/O on non-privileged levels
72	*	71	*
73	* Clean IOPL(12,13) and NT(14) flags in EFLAGS register	72	* Clean IOPL(12,13) and NT(14) flags in EFLAGS register
74	*/	73	*/
75	static void clean_IOPL_NT_flags(void)	74	static void clean_IOPL_NT_flags(void)
76	{	75	{
77	asm volatile (	76	asm volatile (
78	"pushfq\n"	77	"pushfq\n"
79	"pop %%rax\n"	78	"pop %%rax\n"
80	"and $~(0x7000), %%rax\n"	79	"and $~(0x7000), %%rax\n"
81	"pushq %%rax\n"	80	"pushq %%rax\n"
82	"popfq\n"	81	"popfq\n"
83	::: "%rax"	82	::: "%rax"
84	);	83	);
85	}	84	}
86		85
87	/** Disable alignment check	86	/** Disable alignment check
88	*	87	*
89	* Clean AM(18) flag in CR0 register	88	* Clean AM(18) flag in CR0 register
90	*/	89	*/
91	static void clean_AM_flag(void)	90	static void clean_AM_flag(void)
92	{	91	{
93	asm volatile (	92	asm volatile (
94	"mov %%cr0, %%rax\n"	93	"mov %%cr0, %%rax\n"
95	"and $~(0x40000), %%rax\n"	94	"and $~(0x40000), %%rax\n"
96	"mov %%rax, %%cr0\n"	95	"mov %%rax, %%cr0\n"
97	::: "%rax"	96	::: "%rax"
98	);	97	);
99	}	98	}
100		99
101	/** Perform amd64-specific initialization before main_bsp() is called.	100	/** Perform amd64-specific initialization before main_bsp() is called.
102	*	101	*
103	* @param signature Should contain the multiboot signature.	102	* @param signature Should contain the multiboot signature.
104	* @param mi Pointer to the multiboot information structure.	103	* @param mi Pointer to the multiboot information structure.
105	*/	104	*/
106	void arch_pre_main(uint32_t signature, const multiboot_info_t *mi)	105	void arch_pre_main(uint32_t signature, const multiboot_info_t *mi)
107	{	106	{
108	/* Parse multiboot information obtained from the bootloader. */	107	/* Parse multiboot information obtained from the bootloader. */
109	multiboot_info_parse(signature, mi);	108	multiboot_info_parse(signature, mi);
110		109
111	#ifdef CONFIG_SMP	110	#ifdef CONFIG_SMP
112	/* Copy AP bootstrap routines below 1 MB. */	111	/* Copy AP bootstrap routines below 1 MB. */
113	memcpy((void ) AP_BOOT_OFFSET, (void ) BOOT_OFFSET,	112	memcpy((void ) AP_BOOT_OFFSET, (void ) BOOT_OFFSET,
114	(size_t) &_hardcoded_unmapped_size);	113	(size_t) &_hardcoded_unmapped_size);
115	#endif	114	#endif
116	}	115	}
117		116
118	void arch_pre_mm_init(void)	117	void arch_pre_mm_init(void)
119	{	118	{
120	/* Enable no-execute pages */	119	/* Enable no-execute pages */
121	set_efer_flag(AMD_NXE_FLAG);	120	set_efer_flag(AMD_NXE_FLAG);
122	/* Enable FPU */	121	/* Enable FPU */
123	cpu_setup_fpu();	122	cpu_setup_fpu();
124		123
125	/* Initialize segmentation */	124	/* Initialize segmentation */
126	pm_init();	125	pm_init();
127		126
128	/* Disable I/O on nonprivileged levels	127	/* Disable I/O on nonprivileged levels
129	* clear the NT (nested-thread) flag	128	* clear the NT (nested-thread) flag
130	*/	129	*/
131	clean_IOPL_NT_flags();	130	clean_IOPL_NT_flags();
132	/* Disable alignment check */	131	/* Disable alignment check */
133	clean_AM_flag();	132	clean_AM_flag();
134		133
135	if (config.cpu_active == 1) {	134	if (config.cpu_active == 1) {
136	interrupt_init();	135	interrupt_init();
137	bios_init();	136	bios_init();
138		137
139	/* PIC */	138	/* PIC */
140	i8259_init();	139	i8259_init();
141	}	140	}
142	}	141	}
143		142
144		143
145	void arch_post_mm_init(void)	144	void arch_post_mm_init(void)
146	{	145	{
147	if (config.cpu_active == 1) {	146	if (config.cpu_active == 1) {
148	/* Initialize IRQ routing */	147	/* Initialize IRQ routing */
149	irq_init(IRQ_COUNT, IRQ_COUNT);	148	irq_init(IRQ_COUNT, IRQ_COUNT);
150		149
151	/* hard clock */	150	/* hard clock */
152	i8254_init();	151	i8254_init();
153		152
154	#ifdef CONFIG_FB	153	#ifdef CONFIG_FB
155	if (vesa_present())	154	if (vesa_present())
156	vesa_init();	155	vesa_init();
157	else	156	else
158	#endif	157	#endif
159	#ifdef CONFIG_EGA	158	#ifdef CONFIG_EGA
160	ega_init(EGA_BASE, EGA_VIDEORAM); /* video */	159	ega_init(EGA_BASE, EGA_VIDEORAM); /* video */
161	#else	160	#else
162	{}	161	{}
163	#endif	162	#endif
164		163
165	/* Enable debugger */	164	/* Enable debugger */
166	debugger_init();	165	debugger_init();
167	/* Merge all memory zones to 1 big zone */	166	/* Merge all memory zones to 1 big zone */
168	zone_merge_all();	167	zone_merge_all();
169	}	168	}
170		169
171	/* Setup fast SYSCALL/SYSRET */	170	/* Setup fast SYSCALL/SYSRET */
172	syscall_setup_cpu();	171	syscall_setup_cpu();
173	}	172	}
174		173
175	void arch_post_cpu_init()	174	void arch_post_cpu_init()
176	{	175	{
177	#ifdef CONFIG_SMP	176	#ifdef CONFIG_SMP
178	if (config.cpu_active > 1) {	177	if (config.cpu_active > 1) {
179	l_apic_init();	178	l_apic_init();
180	l_apic_debug();	179	l_apic_debug();
181	}	180	}
182	#endif	181	#endif
183	}	182	}
184		183
185	void arch_pre_smp_init(void)	184	void arch_pre_smp_init(void)
186	{	185	{
187	if (config.cpu_active == 1) {	186	if (config.cpu_active == 1) {
188	#ifdef CONFIG_SMP	187	#ifdef CONFIG_SMP
189	acpi_init();	188	acpi_init();
190	#endif /* CONFIG_SMP */	189	#endif /* CONFIG_SMP */
191	}	190	}
192	}	191	}
193		192
194	void arch_post_smp_init(void)	193	void arch_post_smp_init(void)
195	{	194	{
196	#ifdef CONFIG_PC_KBD	195	#ifdef CONFIG_PC_KBD
197	devno_t devno = device_assign_devno();	-
198		-
199	/*	196	/*
200	* Initialize the i8042 controller. Then initialize the keyboard	197	* Initialize the i8042 controller. Then initialize the keyboard
201	* module and connect it to i8042. Enable keyboard interrupts.	198	* module and connect it to i8042. Enable keyboard interrupts.
202	*/	199	*/
203	indev_t kbrdin = i8042_init((i8042_t ) I8042_BASE, devno, IRQ_KBD);	200	indev_t kbrdin = i8042_init((i8042_t ) I8042_BASE, IRQ_KBD);
204	if (kbrdin) {	201	if (kbrdin) {
205	kbrd_init(kbrdin);	202	kbrd_init(kbrdin);
206	trap_virtual_enable_irqs(1 << IRQ_KBD);	203	trap_virtual_enable_irqs(1 << IRQ_KBD);
207	}	204	}
208		205
209	/*	206	/*
210	* This is the necessary evil until the userspace driver is entirely	207	* This is the necessary evil until the userspace driver is entirely
211	* self-sufficient.	208	* self-sufficient.
212	*/	209	*/
213	sysinfo_set_item_val("kbd", NULL, true);	210	sysinfo_set_item_val("kbd", NULL, true);
214	sysinfo_set_item_val("kbd.devno", NULL, devno);	-
215	sysinfo_set_item_val("kbd.inr", NULL, IRQ_KBD);	211	sysinfo_set_item_val("kbd.inr", NULL, IRQ_KBD);
216	sysinfo_set_item_val("kbd.address.physical", NULL,	212	sysinfo_set_item_val("kbd.address.physical", NULL,
217	(uintptr_t) I8042_BASE);	213	(uintptr_t) I8042_BASE);
218	sysinfo_set_item_val("kbd.address.kernel", NULL,	214	sysinfo_set_item_val("kbd.address.kernel", NULL,
219	(uintptr_t) I8042_BASE);	215	(uintptr_t) I8042_BASE);
220	#endif	216	#endif
221	}	217	}
222		218
223	void calibrate_delay_loop(void)	219	void calibrate_delay_loop(void)
224	{	220	{
225	i8254_calibrate_delay_loop();	221	i8254_calibrate_delay_loop();
226	if (config.cpu_active == 1) {	222	if (config.cpu_active == 1) {
227	/*	223	/*
228	* This has to be done only on UP.	224	* This has to be done only on UP.
229	* On SMP, i8254 is not used for time keeping and its interrupt pin remains masked.	225	* On SMP, i8254 is not used for time keeping and its interrupt pin remains masked.
230	*/	226	*/
231	i8254_normal_operation();	227	i8254_normal_operation();
232	}	228	}
233	}	229	}
234		230
235	/** Set thread-local-storage pointer	231	/** Set thread-local-storage pointer
236	*	232	*
237	* TLS pointer is set in FS register. Unfortunately the 64-bit	233	* TLS pointer is set in FS register. Unfortunately the 64-bit
238	* part can be set only in CPL0 mode.	234	* part can be set only in CPL0 mode.
239	*	235	*
240	* The specs say, that on %fs:0 there is stored contents of %fs register,	236	* The specs say, that on %fs:0 there is stored contents of %fs register,
241	* we need not to go to CPL0 to read it.	237	* we need not to go to CPL0 to read it.
242	*/	238	*/
243	unative_t sys_tls_set(unative_t addr)	239	unative_t sys_tls_set(unative_t addr)
244	{	240	{
245	THREAD->arch.tls = addr;	241	THREAD->arch.tls = addr;
246	write_msr(AMD_MSR_FS, addr);	242	write_msr(AMD_MSR_FS, addr);
247	return 0;	243	return 0;
248	}	244	}
249		245
250	/** Acquire console back for kernel	246	/** Acquire console back for kernel
251	*	247	*
252	*/	248	*/
253	void arch_grab_console(void)	249	void arch_grab_console(void)
254	{	250	{
255	#ifdef CONFIG_FB	251	#ifdef CONFIG_FB
256	if (vesa_present())	252	if (vesa_present())
257	vesa_redraw();	253	vesa_redraw();
258	else	254	else
259	#endif	255	#endif
260	#ifdef CONFIG_EGA	256	#ifdef CONFIG_EGA
261	ega_redraw();	257	ega_redraw();
262	#else	258	#else
263	{}	259	{}
264	#endif	260	#endif
265	}	261	}
266		262
267	/** Return console to userspace	263	/** Return console to userspace
268	*	264	*
269	*/	265	*/
270	void arch_release_console(void)	266	void arch_release_console(void)
271	{	267	{
272	}	268	}
273		269
274	/** Construct function pointer	270	/** Construct function pointer
275	*	271	*
276	* @param fptr function pointer structure	272	* @param fptr function pointer structure
277	* @param addr function address	273	* @param addr function address
278	* @param caller calling function address	274	* @param caller calling function address
279	*	275	*
280	* @return address of the function pointer	276	* @return address of the function pointer
281	*	277	*
282	*/	278	*/
283	void arch_construct_function(fncptr_t fptr, void addr, void caller)	279	void arch_construct_function(fncptr_t fptr, void addr, void caller)
284	{	280	{
285	return addr;	281	return addr;
286	}	282	}
287		283
288	/** @}	284	/** @}
289	*/	285	*/
290		286

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(root)/branches/dynload/kernel/arch/amd64/src/amd64.c @ 4346 – Rev 4346 → 4347