1991/0613/pc/mmu.c (diff list | history)

1991/0612/sys/src/9/pc/mmu.c:5,13 – 1991/0613/sys/src/9/pc/mmu.c:5,20 (short | long | prev | next)
1991/0612		#include "fns.h" #include "io.h"                                   void mapstack(Proc *p)
1991/0613		/* * global descriptor table describing all segments */ Segdesc gdt[1024] =
1991/0612		{ }
1991/0613		[NULLSEG] { 0, 0}, /* null descriptor */ [KESEG] EXECSEG(0), /* kernel code */ [KDSEG] DATASEG(0), /* kernel data/stack */ [UESEG] EXECSEG(3), /* user code */ [UDSEG] DATASEG(3), /* user data/stack */ [SYSGATE] CALLGATE(KESEG, syscall, 3), /* call gate for system calls */ { 0, 0}, /* the rest */ };