/* SPDX-License-Identifier: GPL-2.0 */ /* Written 2000 by Andi Kleen */ #ifndef _ASM_X86_DESC_DEFS_H #define _ASM_X86_DESC_DEFS_H /* * Segment descriptor structure definitions, usable from both x86_64 and i386 * archs. */ /* * Low-level interface mapping flags/field names to bits */ /* Flags for _DESC_S (non-system) descriptors */ #define _DESC_ACCESSED … #define _DESC_DATA_WRITABLE … #define _DESC_CODE_READABLE … #define _DESC_DATA_EXPAND_DOWN … #define _DESC_CODE_CONFORMING … #define _DESC_CODE_EXECUTABLE … /* Common flags */ #define _DESC_S … #define _DESC_DPL(dpl) … #define _DESC_PRESENT … #define _DESC_LONG_CODE … #define _DESC_DB … #define _DESC_GRANULARITY_4K … /* System descriptors have a numeric "type" field instead of flags */ #define _DESC_SYSTEM(code) … /* * High-level interface mapping intended usage to low-level combinations * of flags */ #define _DESC_DATA … #define _DESC_CODE … #define DESC_DATA16 … #define DESC_CODE16 … #define DESC_DATA32 … #define DESC_DATA32_BIOS … #define DESC_CODE32 … #define DESC_CODE32_BIOS … #define DESC_TSS32 … #define DESC_DATA64 … #define DESC_CODE64 … #define DESC_USER … #ifndef __ASSEMBLY__ #include <linux/types.h> /* 8 byte segment descriptor */ struct desc_struct { … } __attribute__((packed)); #define GDT_ENTRY_INIT(flags, base, limit) … enum { … }; enum { … }; /* LDT or TSS descriptor in the GDT. */ struct ldttss_desc { … } __attribute__((packed)); ldt_desc; tss_desc; struct idt_bits { … } __attribute__((packed)); struct idt_data { … }; struct gate_struct { … } __attribute__((packed)); gate_desc; #ifndef _SETUP static inline unsigned long gate_offset(const gate_desc *g) { … } static inline unsigned long gate_segment(const gate_desc *g) { … } #endif struct desc_ptr { … } __attribute__((packed)) ; #endif /* !__ASSEMBLY__ */ /* Boot IDT definitions */ #define BOOT_IDT_ENTRIES … /* Access rights as returned by LAR */ #define AR_TYPE_RODATA … #define AR_TYPE_RWDATA … #define AR_TYPE_RODATA_EXPDOWN … #define AR_TYPE_RWDATA_EXPDOWN … #define AR_TYPE_XOCODE … #define AR_TYPE_XRCODE … #define AR_TYPE_XOCODE_CONF … #define AR_TYPE_XRCODE_CONF … #define AR_TYPE_MASK … #define AR_DPL0 … #define AR_DPL3 … #define AR_DPL_MASK … #define AR_A … #define AR_S … #define AR_P … #define AR_AVL … #define AR_L … #define AR_DB … #define AR_G … #endif /* _ASM_X86_DESC_DEFS_H */
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