patch-2.1.122 linux/arch/i386/kernel/desc.h

• Lines: 62
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.1.121/linux/arch/i386/kernel/desc.h
• Orig date: Wed Sep 9 14:51:05 1998

diff -u --recursive --new-file v2.1.121/linux/arch/i386/kernel/desc.h linux/arch/i386/kernel/desc.h
@@ -1,61 +0,0 @@
-#ifndef __ARCH_DESC_H
-#define __ARCH_DESC_H
-
-struct desc_struct {
-	unsigned long a,b;
-};
-
-extern struct desc_struct gdt_table[];
-extern struct desc_struct *idt, *gdt;
-
-struct Xgt_desc_struct {
-	unsigned short size;
-	unsigned long address __attribute__((packed));
-};
-
-#define idt_descr (*(struct Xgt_desc_struct *)((char *)&idt - 2))
-#define gdt_descr (*(struct Xgt_desc_struct *)((char *)&gdt - 2))
-
-/*
- * Entry into gdt where to find first TSS. GDT layout:
- *   0 - null
- *   1 - not used
- *   2 - kernel code segment
- *   3 - kernel data segment
- *   4 - user code segment
- *   5 - user data segment
- *   6 - not used
- *   7 - not used
- *   8 - APM BIOS support
- *   9 - APM BIOS support
- *  10 - APM BIOS support
- *  11 - APM BIOS support
- *  12 - TSS #0
- *  13 - LDT #0
- *  14 - TSS #1
- *  15 - LDT #1
- */
-#define FIRST_TSS_ENTRY 12
-#define FIRST_LDT_ENTRY (FIRST_TSS_ENTRY+1)
-#define _TSS(n) ((((unsigned long) n)<<4)+(FIRST_TSS_ENTRY<<3))
-#define _LDT(n) ((((unsigned long) n)<<4)+(FIRST_LDT_ENTRY<<3))
-#define load_TR(n) __asm__ __volatile__("ltr %%ax": /* no output */ :"a" (_TSS(n)))
-#define load_ldt(n) __asm__ __volatile__("lldt %%ax": /* no output */ :"a" (_LDT(n)))
-#define store_TR(n) \
-__asm__("str %%ax\n\t" \
-	"subl %2,%%eax\n\t" \
-	"shrl $4,%%eax" \
-	:"=a" (n) \
-	:"0" (0),"i" (FIRST_TSS_ENTRY<<3))
-
-extern void set_intr_gate(unsigned int irq, void * addr);
-extern void set_ldt_desc(unsigned int n, void *addr, unsigned int size);
-extern void set_tss_desc(unsigned int n, void *addr);
-
-/*
- * This is the ldt that every process will get unless we need
- * something other than this.
- */
-extern struct desc_struct default_ldt;
-
-#endif