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Diffstat (limited to 'include/asm-x86/desc_32.h')
-rw-r--r--include/asm-x86/desc_32.h244
1 files changed, 0 insertions, 244 deletions
diff --git a/include/asm-x86/desc_32.h b/include/asm-x86/desc_32.h
deleted file mode 100644
index c547403f341..00000000000
--- a/include/asm-x86/desc_32.h
+++ /dev/null
@@ -1,244 +0,0 @@
-#ifndef __ARCH_DESC_H
-#define __ARCH_DESC_H
-
-#include <asm/ldt.h>
-#include <asm/segment.h>
-
-#ifndef __ASSEMBLY__
-
-#include <linux/preempt.h>
-#include <linux/smp.h>
-#include <linux/percpu.h>
-
-#include <asm/mmu.h>
-
-struct Xgt_desc_struct {
- unsigned short size;
- unsigned long address __attribute__((packed));
- unsigned short pad;
-} __attribute__ ((packed));
-
-struct gdt_page
-{
- struct desc_struct gdt[GDT_ENTRIES];
-} __attribute__((aligned(PAGE_SIZE)));
-DECLARE_PER_CPU(struct gdt_page, gdt_page);
-
-static inline struct desc_struct *get_cpu_gdt_table(unsigned int cpu)
-{
- return per_cpu(gdt_page, cpu).gdt;
-}
-
-extern struct Xgt_desc_struct idt_descr;
-extern struct desc_struct idt_table[];
-extern void set_intr_gate(unsigned int irq, void * addr);
-
-static inline void pack_descriptor(__u32 *a, __u32 *b,
- unsigned long base, unsigned long limit, unsigned char type, unsigned char flags)
-{
- *a = ((base & 0xffff) << 16) | (limit & 0xffff);
- *b = (base & 0xff000000) | ((base & 0xff0000) >> 16) |
- (limit & 0x000f0000) | ((type & 0xff) << 8) | ((flags & 0xf) << 20);
-}
-
-static inline void pack_gate(__u32 *a, __u32 *b,
- unsigned long base, unsigned short seg, unsigned char type, unsigned char flags)
-{
- *a = (seg << 16) | (base & 0xffff);
- *b = (base & 0xffff0000) | ((type & 0xff) << 8) | (flags & 0xff);
-}
-
-#define DESCTYPE_LDT 0x82 /* present, system, DPL-0, LDT */
-#define DESCTYPE_TSS 0x89 /* present, system, DPL-0, 32-bit TSS */
-#define DESCTYPE_TASK 0x85 /* present, system, DPL-0, task gate */
-#define DESCTYPE_INT 0x8e /* present, system, DPL-0, interrupt gate */
-#define DESCTYPE_TRAP 0x8f /* present, system, DPL-0, trap gate */
-#define DESCTYPE_DPL3 0x60 /* DPL-3 */
-#define DESCTYPE_S 0x10 /* !system */
-
-#ifdef CONFIG_PARAVIRT
-#include <asm/paravirt.h>
-#else
-#define load_TR_desc() native_load_tr_desc()
-#define load_gdt(dtr) native_load_gdt(dtr)
-#define load_idt(dtr) native_load_idt(dtr)
-#define load_tr(tr) __asm__ __volatile("ltr %0"::"m" (tr))
-#define load_ldt(ldt) __asm__ __volatile("lldt %0"::"m" (ldt))
-
-#define store_gdt(dtr) native_store_gdt(dtr)
-#define store_idt(dtr) native_store_idt(dtr)
-#define store_tr(tr) (tr = native_store_tr())
-#define store_ldt(ldt) __asm__ ("sldt %0":"=m" (ldt))
-
-#define load_TLS(t, cpu) native_load_tls(t, cpu)
-#define set_ldt native_set_ldt
-
-#define write_ldt_entry(dt, entry, a, b) write_dt_entry(dt, entry, a, b)
-#define write_gdt_entry(dt, entry, a, b) write_dt_entry(dt, entry, a, b)
-#define write_idt_entry(dt, entry, a, b) write_dt_entry(dt, entry, a, b)
-#endif
-
-static inline void write_dt_entry(struct desc_struct *dt,
- int entry, u32 entry_low, u32 entry_high)
-{
- dt[entry].a = entry_low;
- dt[entry].b = entry_high;
-}
-
-static inline void native_set_ldt(const void *addr, unsigned int entries)
-{
- if (likely(entries == 0))
- __asm__ __volatile__("lldt %w0"::"q" (0));
- else {
- unsigned cpu = smp_processor_id();
- __u32 a, b;
-
- pack_descriptor(&a, &b, (unsigned long)addr,
- entries * sizeof(struct desc_struct) - 1,
- DESCTYPE_LDT, 0);
- write_gdt_entry(get_cpu_gdt_table(cpu), GDT_ENTRY_LDT, a, b);
- __asm__ __volatile__("lldt %w0"::"q" (GDT_ENTRY_LDT*8));
- }
-}
-
-
-static inline void native_load_tr_desc(void)
-{
- asm volatile("ltr %w0"::"q" (GDT_ENTRY_TSS*8));
-}
-
-static inline void native_load_gdt(const struct Xgt_desc_struct *dtr)
-{
- asm volatile("lgdt %0"::"m" (*dtr));
-}
-
-static inline void native_load_idt(const struct Xgt_desc_struct *dtr)
-{
- asm volatile("lidt %0"::"m" (*dtr));
-}
-
-static inline void native_store_gdt(struct Xgt_desc_struct *dtr)
-{
- asm ("sgdt %0":"=m" (*dtr));
-}
-
-static inline void native_store_idt(struct Xgt_desc_struct *dtr)
-{
- asm ("sidt %0":"=m" (*dtr));
-}
-
-static inline unsigned long native_store_tr(void)
-{
- unsigned long tr;
- asm ("str %0":"=r" (tr));
- return tr;
-}
-
-static inline void native_load_tls(struct thread_struct *t, unsigned int cpu)
-{
- unsigned int i;
- struct desc_struct *gdt = get_cpu_gdt_table(cpu);
-
- for (i = 0; i < GDT_ENTRY_TLS_ENTRIES; i++)
- gdt[GDT_ENTRY_TLS_MIN + i] = t->tls_array[i];
-}
-
-static inline void _set_gate(int gate, unsigned int type, void *addr, unsigned short seg)
-{
- __u32 a, b;
- pack_gate(&a, &b, (unsigned long)addr, seg, type, 0);
- write_idt_entry(idt_table, gate, a, b);
-}
-
-static inline void __set_tss_desc(unsigned int cpu, unsigned int entry, const void *addr)
-{
- __u32 a, b;
- pack_descriptor(&a, &b, (unsigned long)addr,
- offsetof(struct tss_struct, __cacheline_filler) - 1,
- DESCTYPE_TSS, 0);
- write_gdt_entry(get_cpu_gdt_table(cpu), entry, a, b);
-}
-
-
-#define set_tss_desc(cpu,addr) __set_tss_desc(cpu, GDT_ENTRY_TSS, addr)
-
-#define LDT_entry_a(info) \
- ((((info)->base_addr & 0x0000ffff) << 16) | ((info)->limit & 0x0ffff))
-
-#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) | \
- 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 )
-
-static inline void clear_LDT(void)
-{
- set_ldt(NULL, 0);
-}
-
-/*
- * load one particular LDT into the current CPU
- */
-static inline void load_LDT_nolock(mm_context_t *pc)
-{
- set_ldt(pc->ldt, pc->size);
-}
-
-static inline void load_LDT(mm_context_t *pc)
-{
- preempt_disable();
- load_LDT_nolock(pc);
- preempt_enable();
-}
-
-static inline unsigned long get_desc_base(unsigned long *desc)
-{
- unsigned long base;
- base = ((desc[0] >> 16) & 0x0000ffff) |
- ((desc[1] << 16) & 0x00ff0000) |
- (desc[1] & 0xff000000);
- return base;
-}
-
-#else /* __ASSEMBLY__ */
-
-/*
- * GET_DESC_BASE reads the descriptor base of the specified segment.
- *
- * Args:
- * idx - descriptor index
- * gdt - GDT pointer
- * base - 32bit register to which the base will be written
- * lo_w - lo word of the "base" register
- * lo_b - lo byte of the "base" register
- * hi_b - hi byte of the low word of the "base" register
- *
- * Example:
- * GET_DESC_BASE(GDT_ENTRY_ESPFIX_SS, %ebx, %eax, %ax, %al, %ah)
- * Will read the base address of GDT_ENTRY_ESPFIX_SS and put it into %eax.
- */
-#define GET_DESC_BASE(idx, gdt, base, lo_w, lo_b, hi_b) \
- movb idx*8+4(gdt), lo_b; \
- movb idx*8+7(gdt), hi_b; \
- shll $16, base; \
- movw idx*8+2(gdt), lo_w;
-
-#endif /* !__ASSEMBLY__ */
-
-#endif
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-28 00:26:42 +0000