#ifndef __LUNAIX_GDT_H #define __LUNAIX_GDT_H 1 #define SD_TYPE(x) (x << 8) #define SD_CODE_DATA(x) (x << 12) #define SD_DPL(x) (x << 13) #define SD_PRESENT(x) (x << 15) #define SD_AVL(x) (x << 20) #define SD_64BITS(x) (x << 21) #define SD_32BITS(x) (x << 22) #define SD_4K_GRAN(x) (x << 23) #define SEG_LIM_L(x) (x & 0x0ffff) #define SEG_LIM_H(x) (x & 0xf0000) #define SEG_BASE_L(x) ((x & 0x0000ffff) << 16) #define SEG_BASE_M(x) ((x & 0x00ff0000) >> 16) #define SEG_BASE_H(x) (x & 0xff000000) #define SEG_DATA_RD 0x00 // Read-Only #define SEG_DATA_RDA 0x01 // Read-Only, accessed #define SEG_DATA_RDWR 0x02 // Read/Write #define SEG_DATA_RDWRA 0x03 // Read/Write, accessed #define SEG_DATA_RDEXPD 0x04 // Read-Only, expand-down #define SEG_DATA_RDEXPDA 0x05 // Read-Only, expand-down, accessed #define SEG_DATA_RDWREXPD 0x06 // Read/Write, expand-down #define SEG_DATA_RDWREXPDA 0x07 // Read/Write, expand-down, accessed #define SEG_CODE_EX 0x08 // Execute-Only #define SEG_CODE_EXA 0x09 // Execute-Only, accessed #define SEG_CODE_EXRD 0x0A // Execute/Read #define SEG_CODE_EXRDA 0x0B // Execute/Read, accessed #define SEG_CODE_EXC 0x0C // Execute-Only, conforming #define SEG_CODE_EXCA 0x0D // Execute-Only, conforming, accessed #define SEG_CODE_EXRDC 0x0E // Execute/Read, conforming #define SEG_CODE_EXRDCA 0x0F // Execute/Read, conforming, accessed #define SEG_R0_CODE SD_TYPE(SEG_CODE_EXRD) | SD_CODE_DATA(1) | SD_DPL(0) | \ SD_PRESENT(1) | SD_AVL(0) | SD_64BITS(0) | SD_32BITS(1) | \ SD_4K_GRAN(1) #define SEG_R0_DATA SD_TYPE(SEG_DATA_RDWR) | SD_CODE_DATA(1) | SD_DPL(0) | \ SD_PRESENT(1) | SD_AVL(0) | SD_64BITS(0) | SD_32BITS(1) | \ SD_4K_GRAN(1) #define SEG_R3_CODE SD_TYPE(SEG_CODE_EXRD) | SD_CODE_DATA(1) | SD_DPL(3) | \ SD_PRESENT(1) | SD_AVL(0) | SD_64BITS(0) | SD_32BITS(1) | \ SD_4K_GRAN(1) #define SEG_R3_DATA SD_TYPE(SEG_DATA_RDWR) | SD_CODE_DATA(1) | SD_DPL(3) | \ SD_PRESENT(1) | SD_AVL(0) | SD_64BITS(0) | SD_32BITS(1) | \ SD_4K_GRAN(1) #define SEG_TSS SD_TYPE(9) | SD_DPL(0) | SD_PRESENT(1) void _init_gdt(); #endif