x86, um: ... and asm-x86 move

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>

1 files changed, 0 insertions, 409 deletions

diff --git a/include/asm-x86/desc.h b/include/asm-x86/desc.h
deleted file mode 100644
index f06adac7938..00000000000
--- a/include/asm-x86/desc.h
+++ /dev/null
@@ -1,409 +0,0 @@
-#ifndef ASM_X86__DESC_H
-#define ASM_X86__DESC_H
-
-#ifndef __ASSEMBLY__
-#include <asm/desc_defs.h>
-#include <asm/ldt.h>
-#include <asm/mmu.h>
-#include <linux/smp.h>
-
-static inline void fill_ldt(struct desc_struct *desc,
-			    const struct user_desc *info)
-{
-	desc->limit0 = info->limit & 0x0ffff;
-	desc->base0 = info->base_addr & 0x0000ffff;
-
-	desc->base1 = (info->base_addr & 0x00ff0000) >> 16;
-	desc->type = (info->read_exec_only ^ 1) << 1;
-	desc->type |= info->contents << 2;
-	desc->s = 1;
-	desc->dpl = 0x3;
-	desc->p = info->seg_not_present ^ 1;
-	desc->limit = (info->limit & 0xf0000) >> 16;
-	desc->avl = info->useable;
-	desc->d = info->seg_32bit;
-	desc->g = info->limit_in_pages;
-	desc->base2 = (info->base_addr & 0xff000000) >> 24;
-	/*
-	 * Don't allow setting of the lm bit. It is useless anyway
-	 * because 64bit system calls require __USER_CS:
-	 */
-	desc->l = 0;
-}
-
-extern struct desc_ptr idt_descr;
-extern gate_desc idt_table[];
-
-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;
-}
-
-#ifdef CONFIG_X86_64
-
-static inline void pack_gate(gate_desc *gate, unsigned type, unsigned long func,
-			     unsigned dpl, unsigned ist, unsigned seg)
-{
-	gate->offset_low = PTR_LOW(func);
-	gate->segment = __KERNEL_CS;
-	gate->ist = ist;
-	gate->p = 1;
-	gate->dpl = dpl;
-	gate->zero0 = 0;
-	gate->zero1 = 0;
-	gate->type = type;
-	gate->offset_middle = PTR_MIDDLE(func);
-	gate->offset_high = PTR_HIGH(func);
-}
-
-#else
-static inline void pack_gate(gate_desc *gate, unsigned char type,
-			     unsigned long base, unsigned dpl, unsigned flags,
-			     unsigned short seg)
-{
-	gate->a = (seg << 16) | (base & 0xffff);
-	gate->b = (base & 0xffff0000) |
-		  (((0x80 | type | (dpl << 5)) & 0xff) << 8);
-}
-
-#endif
-
-static inline int desc_empty(const void *ptr)
-{
-	const u32 *desc = ptr;
-	return !(desc[0] | desc[1]);
-}
-
-#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, desc)	\
-	native_write_ldt_entry(dt, entry, desc)
-#define write_gdt_entry(dt, entry, desc, type)		\
-	native_write_gdt_entry(dt, entry, desc, type)
-#define write_idt_entry(dt, entry, g)		\
-	native_write_idt_entry(dt, entry, g)
-
-static inline void paravirt_alloc_ldt(struct desc_struct *ldt, unsigned entries)
-{
-}
-
-static inline void paravirt_free_ldt(struct desc_struct *ldt, unsigned entries)
-{
-}
-#endif	/* CONFIG_PARAVIRT */
-
-static inline void native_write_idt_entry(gate_desc *idt, int entry,
-					  const gate_desc *gate)
-{
-	memcpy(&idt[entry], gate, sizeof(*gate));
-}
-
-static inline void native_write_ldt_entry(struct desc_struct *ldt, int entry,
-					  const void *desc)
-{
-	memcpy(&ldt[entry], desc, 8);
-}
-
-static inline void native_write_gdt_entry(struct desc_struct *gdt, int entry,
-					  const void *desc, int type)
-{
-	unsigned int size;
-	switch (type) {
-	case DESC_TSS:
-		size = sizeof(tss_desc);
-		break;
-	case DESC_LDT:
-		size = sizeof(ldt_desc);
-		break;
-	default:
-		size = sizeof(struct desc_struct);
-		break;
-	}
-	memcpy(&gdt[entry], desc, size);
-}
-
-static inline void pack_descriptor(struct desc_struct *desc, unsigned long base,
-				   unsigned long limit, unsigned char type,
-				   unsigned char flags)
-{
-	desc->a = ((base & 0xffff) << 16) | (limit & 0xffff);
-	desc->b = (base & 0xff000000) | ((base & 0xff0000) >> 16) |
-		(limit & 0x000f0000) | ((type & 0xff) << 8) |
-		((flags & 0xf) << 20);
-	desc->p = 1;
-}
-
-
-static inline void set_tssldt_descriptor(void *d, unsigned long addr,
-					 unsigned type, unsigned size)
-{
-#ifdef CONFIG_X86_64
-	struct ldttss_desc64 *desc = d;
-	memset(desc, 0, sizeof(*desc));
-	desc->limit0 = size & 0xFFFF;
-	desc->base0 = PTR_LOW(addr);
-	desc->base1 = PTR_MIDDLE(addr) & 0xFF;
-	desc->type = type;
-	desc->p = 1;
-	desc->limit1 = (size >> 16) & 0xF;
-	desc->base2 = (PTR_MIDDLE(addr) >> 8) & 0xFF;
-	desc->base3 = PTR_HIGH(addr);
-#else
-	pack_descriptor((struct desc_struct *)d, addr, size, 0x80 | type, 0);
-#endif
-}
-
-static inline void __set_tss_desc(unsigned cpu, unsigned int entry, void *addr)
-{
-	struct desc_struct *d = get_cpu_gdt_table(cpu);
-	tss_desc tss;
-
-	/*
-	 * 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(&tss, (unsigned long)addr, DESC_TSS,
-			      IO_BITMAP_OFFSET + IO_BITMAP_BYTES +
-			      sizeof(unsigned long) - 1);
-	write_gdt_entry(d, entry, &tss, DESC_TSS);
-}
-
-#define set_tss_desc(cpu, addr) __set_tss_desc(cpu, GDT_ENTRY_TSS, addr)
-
-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();
-		ldt_desc ldt;
-
-		set_tssldt_descriptor(&ldt, (unsigned long)addr, DESC_LDT,
-				      entries * LDT_ENTRY_SIZE - 1);
-		write_gdt_entry(get_cpu_gdt_table(cpu), GDT_ENTRY_LDT,
-				&ldt, DESC_LDT);
-		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 desc_ptr *dtr)
-{
-	asm volatile("lgdt %0"::"m" (*dtr));
-}
-
-static inline void native_load_idt(const struct desc_ptr *dtr)
-{
-	asm volatile("lidt %0"::"m" (*dtr));
-}
-
-static inline void native_store_gdt(struct desc_ptr *dtr)
-{
-	asm volatile("sgdt %0":"=m" (*dtr));
-}
-
-static inline void native_store_idt(struct desc_ptr *dtr)
-{
-	asm volatile("sidt %0":"=m" (*dtr));
-}
-
-static inline unsigned long native_store_tr(void)
-{
-	unsigned long tr;
-	asm volatile("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];
-}
-
-#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)
-
-#ifdef CONFIG_X86_64
-#define LDT_empty(info) (_LDT_empty(info) && ((info)->lm == 0))
-#else
-#define LDT_empty(info) (_LDT_empty(info))
-#endif
-
-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(const struct desc_struct *desc)
-{
-	return desc->base0 | ((desc->base1) << 16) | ((desc->base2) << 24);
-}
-
-static inline unsigned long get_desc_limit(const struct desc_struct *desc)
-{
-	return desc->limit0 | (desc->limit << 16);
-}
-
-static inline void _set_gate(int gate, unsigned type, void *addr,
-			     unsigned dpl, unsigned ist, unsigned seg)
-{
-	gate_desc s;
-	pack_gate(&s, type, (unsigned long)addr, dpl, ist, seg);
-	/*
-	 * does not need to be atomic because it is only done once at
-	 * setup time
-	 */
-	write_idt_entry(idt_table, gate, &s);
-}
-
-/*
- * This needs to use 'idt_table' rather than 'idt', and
- * thus use the _nonmapped_ version of the IDT, as the
- * Pentium F0 0F bugfix can have resulted in the mapped
- * IDT being write-protected.
- */
-static inline void set_intr_gate(unsigned int n, void *addr)
-{
-	BUG_ON((unsigned)n > 0xFF);
-	_set_gate(n, GATE_INTERRUPT, addr, 0, 0, __KERNEL_CS);
-}
-
-#define SYS_VECTOR_FREE		0
-#define SYS_VECTOR_ALLOCED	1
-
-extern int first_system_vector;
-extern char system_vectors[];
-
-static inline void alloc_system_vector(int vector)
-{
-	if (system_vectors[vector] == SYS_VECTOR_FREE) {
-		system_vectors[vector] = SYS_VECTOR_ALLOCED;
-		if (first_system_vector > vector)
-			first_system_vector = vector;
-	} else
-		BUG();
-}
-
-static inline void alloc_intr_gate(unsigned int n, void *addr)
-{
-	alloc_system_vector(n);
-	set_intr_gate(n, addr);
-}
-
-/*
- * This routine sets up an interrupt gate at directory privilege level 3.
- */
-static inline void set_system_intr_gate(unsigned int n, void *addr)
-{
-	BUG_ON((unsigned)n > 0xFF);
-	_set_gate(n, GATE_INTERRUPT, addr, 0x3, 0, __KERNEL_CS);
-}
-
-static inline void set_system_trap_gate(unsigned int n, void *addr)
-{
-	BUG_ON((unsigned)n > 0xFF);
-	_set_gate(n, GATE_TRAP, addr, 0x3, 0, __KERNEL_CS);
-}
-
-static inline void set_trap_gate(unsigned int n, void *addr)
-{
-	BUG_ON((unsigned)n > 0xFF);
-	_set_gate(n, GATE_TRAP, addr, 0, 0, __KERNEL_CS);
-}
-
-static inline void set_task_gate(unsigned int n, unsigned int gdt_entry)
-{
-	BUG_ON((unsigned)n > 0xFF);
-	_set_gate(n, GATE_TASK, (void *)0, 0, 0, (gdt_entry<<3));
-}
-
-static inline void set_intr_gate_ist(int n, void *addr, unsigned ist)
-{
-	BUG_ON((unsigned)n > 0xFF);
-	_set_gate(n, GATE_INTERRUPT, addr, 0, ist, __KERNEL_CS);
-}
-
-static inline void set_system_intr_gate_ist(int n, void *addr, unsigned ist)
-{
-	BUG_ON((unsigned)n > 0xFF);
-	_set_gate(n, GATE_INTERRUPT, addr, 0x3, ist, __KERNEL_CS);
-}
-
-#else
-/*
- * 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 /* ASM_X86__DESC_H */