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Diffstat (limited to 'include/asm-x86_64/desc.h')
-rw-r--r--include/asm-x86_64/desc.h238
1 files changed, 0 insertions, 238 deletions
diff --git a/include/asm-x86_64/desc.h b/include/asm-x86_64/desc.h
deleted file mode 100644
index eb7723a4679..00000000000
--- a/include/asm-x86_64/desc.h
+++ /dev/null
@@ -1,238 +0,0 @@
-/* Written 2000 by Andi Kleen */
-#ifndef __ARCH_DESC_H
-#define __ARCH_DESC_H
-
-#include <linux/threads.h>
-#include <asm/ldt.h>
-
-#ifndef __ASSEMBLY__
-
-#include <linux/string.h>
-#include <linux/smp.h>
-
-#include <asm/segment.h>
-#include <asm/mmu.h>
-
-// 8 byte segment descriptor
-struct desc_struct {
- u16 limit0;
- u16 base0;
- unsigned base1 : 8, type : 4, s : 1, dpl : 2, p : 1;
- unsigned limit : 4, avl : 1, l : 1, d : 1, g : 1, base2 : 8;
-} __attribute__((packed));
-
-struct n_desc_struct {
- unsigned int a,b;
-};
-
-extern struct desc_struct cpu_gdt_table[GDT_ENTRIES];
-
-enum {
- GATE_INTERRUPT = 0xE,
- GATE_TRAP = 0xF,
- GATE_CALL = 0xC,
-};
-
-// 16byte gate
-struct gate_struct {
- u16 offset_low;
- u16 segment;
- unsigned ist : 3, zero0 : 5, type : 5, dpl : 2, p : 1;
- u16 offset_middle;
- u32 offset_high;
- u32 zero1;
-} __attribute__((packed));
-
-#define PTR_LOW(x) ((unsigned long)(x) & 0xFFFF)
-#define PTR_MIDDLE(x) (((unsigned long)(x) >> 16) & 0xFFFF)
-#define PTR_HIGH(x) ((unsigned long)(x) >> 32)
-
-enum {
- DESC_TSS = 0x9,
- DESC_LDT = 0x2,
-};
-
-// LDT or TSS descriptor in the GDT. 16 bytes.
-struct ldttss_desc {
- u16 limit0;
- u16 base0;
- unsigned base1 : 8, type : 5, dpl : 2, p : 1;
- unsigned limit1 : 4, zero0 : 3, g : 1, base2 : 8;
- u32 base3;
- u32 zero1;
-} __attribute__((packed));
-
-struct desc_ptr {
- unsigned short size;
- unsigned long address;
-} __attribute__((packed)) ;
-
-#define load_TR_desc() asm volatile("ltr %w0"::"r" (GDT_ENTRY_TSS*8))
-#define load_LDT_desc() asm volatile("lldt %w0"::"r" (GDT_ENTRY_LDT*8))
-#define clear_LDT() asm volatile("lldt %w0"::"r" (0))
-
-/*
- * This is the ldt that every process will get unless we need
- * something other than this.
- */
-extern struct desc_struct default_ldt[];
-extern struct gate_struct idt_table[];
-extern struct desc_ptr cpu_gdt_descr[];
-
-/* the cpu gdt accessor */
-#define cpu_gdt(_cpu) ((struct desc_struct *)cpu_gdt_descr[_cpu].address)
-
-static inline void _set_gate(void *adr, unsigned type, unsigned long func, unsigned dpl, unsigned ist)
-{
- struct gate_struct s;
- s.offset_low = PTR_LOW(func);
- s.segment = __KERNEL_CS;
- s.ist = ist;
- s.p = 1;
- s.dpl = dpl;
- s.zero0 = 0;
- s.zero1 = 0;
- s.type = type;
- s.offset_middle = PTR_MIDDLE(func);
- s.offset_high = PTR_HIGH(func);
- /* does not need to be atomic because it is only done once at setup time */
- memcpy(adr, &s, 16);
-}
-
-static inline void set_intr_gate(int nr, void *func)
-{
- BUG_ON((unsigned)nr > 0xFF);
- _set_gate(&idt_table[nr], GATE_INTERRUPT, (unsigned long) func, 0, 0);
-}
-
-static inline void set_intr_gate_ist(int nr, void *func, unsigned ist)
-{
- BUG_ON((unsigned)nr > 0xFF);
- _set_gate(&idt_table[nr], GATE_INTERRUPT, (unsigned long) func, 0, ist);
-}
-
-static inline void set_system_gate(int nr, void *func)
-{
- BUG_ON((unsigned)nr > 0xFF);
- _set_gate(&idt_table[nr], GATE_INTERRUPT, (unsigned long) func, 3, 0);
-}
-
-static inline void set_system_gate_ist(int nr, void *func, unsigned ist)
-{
- _set_gate(&idt_table[nr], GATE_INTERRUPT, (unsigned long) func, 3, ist);
-}
-
-static inline void set_tssldt_descriptor(void *ptr, unsigned long tss, unsigned type,
- unsigned size)
-{
- struct ldttss_desc d;
- memset(&d,0,sizeof(d));
- d.limit0 = size & 0xFFFF;
- d.base0 = PTR_LOW(tss);
- d.base1 = PTR_MIDDLE(tss) & 0xFF;
- d.type = type;
- d.p = 1;
- d.limit1 = (size >> 16) & 0xF;
- d.base2 = (PTR_MIDDLE(tss) >> 8) & 0xFF;
- d.base3 = PTR_HIGH(tss);
- memcpy(ptr, &d, 16);
-}
-
-static inline void set_tss_desc(unsigned cpu, void *addr)
-{
- /*
- * sizeof(unsigned long) coming from an extra "long" at the end
- * of the iobitmap. See tss_struct definition in processor.h
- *
- * -1? seg base+limit should be pointing to the address of the
- * last valid byte
- */
- set_tssldt_descriptor(&cpu_gdt(cpu)[GDT_ENTRY_TSS],
- (unsigned long)addr, DESC_TSS,
- IO_BITMAP_OFFSET + IO_BITMAP_BYTES + sizeof(unsigned long) - 1);
-}
-
-static inline void set_ldt_desc(unsigned cpu, void *addr, int size)
-{
- set_tssldt_descriptor(&cpu_gdt(cpu)[GDT_ENTRY_LDT], (unsigned long)addr,
- DESC_LDT, size * 8 - 1);
-}
-
-static inline void set_seg_base(unsigned cpu, int entry, void *base)
-{
- struct desc_struct *d = &cpu_gdt(cpu)[entry];
- u32 addr = (u32)(u64)base;
- BUG_ON((u64)base >> 32);
- d->base0 = addr & 0xffff;
- d->base1 = (addr >> 16) & 0xff;
- d->base2 = (addr >> 24) & 0xff;
-}
-
-#define LDT_entry_a(info) \
- ((((info)->base_addr & 0x0000ffff) << 16) | ((info)->limit & 0x0ffff))
-/* Don't allow setting of the lm bit. It is useless anyways because
- 64bit system calls require __USER_CS. */
-#define LDT_entry_b(info) \
- (((info)->base_addr & 0xff000000) | \
- (((info)->base_addr & 0x00ff0000) >> 16) | \
- ((info)->limit & 0xf0000) | \
- (((info)->read_exec_only ^ 1) << 9) | \
- ((info)->contents << 10) | \
- (((info)->seg_not_present ^ 1) << 15) | \
- ((info)->seg_32bit << 22) | \
- ((info)->limit_in_pages << 23) | \
- ((info)->useable << 20) | \
- /* ((info)->lm << 21) | */ \
- 0x7000)
-
-#define LDT_empty(info) (\
- (info)->base_addr == 0 && \
- (info)->limit == 0 && \
- (info)->contents == 0 && \
- (info)->read_exec_only == 1 && \
- (info)->seg_32bit == 0 && \
- (info)->limit_in_pages == 0 && \
- (info)->seg_not_present == 1 && \
- (info)->useable == 0 && \
- (info)->lm == 0)
-
-#if TLS_SIZE != 24
-# error update this code.
-#endif
-
-static inline void load_TLS(struct thread_struct *t, unsigned int cpu)
-{
- u64 *gdt = (u64 *)(cpu_gdt(cpu) + GDT_ENTRY_TLS_MIN);
- gdt[0] = t->tls_array[0];
- gdt[1] = t->tls_array[1];
- gdt[2] = t->tls_array[2];
-}
-
-/*
- * load one particular LDT into the current CPU
- */
-static inline void load_LDT_nolock (mm_context_t *pc, int cpu)
-{
- int count = pc->size;
-
- if (likely(!count)) {
- clear_LDT();
- return;
- }
-
- set_ldt_desc(cpu, pc->ldt, count);
- load_LDT_desc();
-}
-
-static inline void load_LDT(mm_context_t *pc)
-{
- int cpu = get_cpu();
- load_LDT_nolock(pc, cpu);
- put_cpu();
-}
-
-extern struct desc_ptr idt_descr;
-
-#endif /* !__ASSEMBLY__ */
-
-#endif
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