... 0xffff,MEM_USR,0xfa00,0xcf# SEL_UCODE.word 0xffff,MEM_USR,0xf200,0xcf# SEL_UDATA.word _TSSLM,MEM_TSS,0x8900,0x0 # SEL_TSSThe client’s code and data start from address MEM_USR (0xa000), and a selector (SEL_UCODE) ... */#define GCODE_SEL 1 /* Kernel Code Descriptor */#define GDATA_SEL 2 /* Kernel Data Descriptor */#define GPRIV_SEL 3 /* SMP Per-Processor Private Data */#define GPROC0_SEL 4 /* Task state process ... consider panic from */#define GBIOSCODE32_SEL 10 /* BIOS interface (32bit Code) */#define GBIOSCODE16_SEL 11 /* BIOS interface (16bit Code) */#define GBIOSDATA_SEL 12 /* BIOS interface (Data) */#define...