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root/kernel/arch/amd64/include/arch/cpu.h

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/*
 * Copyright (c) 2001-2004 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 kernel_amd64
 * @{
 */
/** @file
 */

#ifndef KERN_amd64_CPU_H_
#define KERN_amd64_CPU_H_

#define RFLAGS_CF       (1 << 0)
#define RFLAGS_PF       (1 << 2)
#define RFLAGS_AF       (1 << 4)
#define RFLAGS_ZF       (1 << 6)
#define RFLAGS_SF       (1 << 7)
#define RFLAGS_TF       (1 << 8)
#define RFLAGS_IF       (1 << 9)
#define RFLAGS_DF       (1 << 10)
#define RFLAGS_OF       (1 << 11)
#define RFLAGS_IOPL     (3 << 12)
#define RFLAGS_NT       (1 << 14)
#define RFLAGS_RF       (1 << 16)
#define RFLAGS_ID       (1 << 21)

#define CR0_PE          (1 << 0)
#define CR0_MP          (1 << 1)
#define CR0_EM          (1 << 2)
#define CR0_TS          (1 << 3)
#define CR0_AM          (1 << 18)
#define CR0_PG          (1 << 31)

#define CR4_PAE         (1 << 5)
#define CR4_OSFXSR      (1 << 9)

/* EFER bits */
#define AMD_SCE         (1 << 0)
#define AMD_LME         (1 << 8)
#define AMD_LMA         (1 << 10)
#define AMD_NXE         (1 << 11)
#define AMD_FFXSR       (1 << 14)

#define AMD_APIC_BASE_GE        (1 << 11)

/* MSR registers */
#define AMD_MSR_APIC_BASE       0x0000001b
#define AMD_MSR_EFER            0xc0000080
#define AMD_MSR_STAR            0xc0000081
#define AMD_MSR_LSTAR           0xc0000082
#define AMD_MSR_SFMASK          0xc0000084
#define AMD_MSR_FS              0xc0000100
#define AMD_MSR_GS              0xc0000101
#define AMD_MSR_GS_KERNEL       0xc0000102

#ifndef __ASSEMBLER__

#include <arch/pm.h>

typedef struct {
        int vendor;
        int family;
        int model;
        int stepping;
        tss_t *tss;

        unsigned int id; /** CPU's local, ie physical, APIC ID. */

        size_t iomapver_copy;  /** Copy of TASK's I/O Permission bitmap generation count. */
} cpu_arch_t;

struct star_msr {
};

struct lstar_msr {
};

void cpu_setup_fpu(void);

#endif /* __ASSEMBLER__ */

#endif

/** @}
 */

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