diff options
Diffstat (limited to 'include/asm-i386/desc.h')
| -rw-r--r-- | include/asm-i386/desc.h | 33 |
1 files changed, 25 insertions, 8 deletions
diff --git a/include/asm-i386/desc.h b/include/asm-i386/desc.h index 11e67811a990..6df1a53c190e 100644 --- a/include/asm-i386/desc.h +++ b/include/asm-i386/desc.h @@ -27,8 +27,18 @@ struct Xgt_desc_struct { extern struct Xgt_desc_struct idt_descr, cpu_gdt_descr[NR_CPUS]; -#define load_TR_desc() __asm__ __volatile__("ltr %%ax"::"a" (GDT_ENTRY_TSS*8)) -#define load_LDT_desc() __asm__ __volatile__("lldt %%ax"::"a" (GDT_ENTRY_LDT*8)) +#define load_TR_desc() __asm__ __volatile__("ltr %w0"::"q" (GDT_ENTRY_TSS*8)) +#define load_LDT_desc() __asm__ __volatile__("lldt %w0"::"q" (GDT_ENTRY_LDT*8)) + +#define load_gdt(dtr) __asm__ __volatile("lgdt %0"::"m" (*dtr)) +#define load_idt(dtr) __asm__ __volatile("lidt %0"::"m" (*dtr)) +#define load_tr(tr) __asm__ __volatile("ltr %0"::"mr" (tr)) +#define load_ldt(ldt) __asm__ __volatile("lldt %0"::"mr" (ldt)) + +#define store_gdt(dtr) __asm__ ("sgdt %0":"=m" (*dtr)) +#define store_idt(dtr) __asm__ ("sidt %0":"=m" (*dtr)) +#define store_tr(tr) __asm__ ("str %0":"=mr" (tr)) +#define store_ldt(ldt) __asm__ ("sldt %0":"=mr" (ldt)) /* * This is the ldt that every process will get unless we need @@ -39,14 +49,14 @@ extern void set_intr_gate(unsigned int irq, void * addr); #define _set_tssldt_desc(n,addr,limit,type) \ __asm__ __volatile__ ("movw %w3,0(%2)\n\t" \ - "movw %%ax,2(%2)\n\t" \ - "rorl $16,%%eax\n\t" \ - "movb %%al,4(%2)\n\t" \ + "movw %w1,2(%2)\n\t" \ + "rorl $16,%1\n\t" \ + "movb %b1,4(%2)\n\t" \ "movb %4,5(%2)\n\t" \ "movb $0,6(%2)\n\t" \ - "movb %%ah,7(%2)\n\t" \ - "rorl $16,%%eax" \ - : "=m"(*(n)) : "a" (addr), "r"(n), "ir"(limit), "i"(type)) + "movb %h1,7(%2)\n\t" \ + "rorl $16,%1" \ + : "=m"(*(n)) : "q" (addr), "r"(n), "ir"(limit), "i"(type)) static inline void __set_tss_desc(unsigned int cpu, unsigned int entry, void *addr) { @@ -86,6 +96,13 @@ static inline void set_ldt_desc(unsigned int cpu, void *addr, unsigned int size) (info)->seg_not_present == 1 && \ (info)->useable == 0 ) +static inline void write_ldt_entry(void *ldt, int entry, __u32 entry_a, __u32 entry_b) +{ + __u32 *lp = (__u32 *)((char *)ldt + entry*8); + *lp = entry_a; + *(lp+1) = entry_b; +} + #if TLS_SIZE != 24 # error update this code. #endif |