diff options
Diffstat (limited to 'arch/i386/kernel/doublefault_32.c')
-rw-r--r-- | arch/i386/kernel/doublefault_32.c | 70 |
1 files changed, 0 insertions, 70 deletions
diff --git a/arch/i386/kernel/doublefault_32.c b/arch/i386/kernel/doublefault_32.c deleted file mode 100644 index 40978af630e..00000000000 --- a/arch/i386/kernel/doublefault_32.c +++ /dev/null @@ -1,70 +0,0 @@ -#include <linux/mm.h> -#include <linux/sched.h> -#include <linux/init.h> -#include <linux/init_task.h> -#include <linux/fs.h> - -#include <asm/uaccess.h> -#include <asm/pgtable.h> -#include <asm/processor.h> -#include <asm/desc.h> - -#define DOUBLEFAULT_STACKSIZE (1024) -static unsigned long doublefault_stack[DOUBLEFAULT_STACKSIZE]; -#define STACK_START (unsigned long)(doublefault_stack+DOUBLEFAULT_STACKSIZE) - -#define ptr_ok(x) ((x) > PAGE_OFFSET && (x) < PAGE_OFFSET + MAXMEM) - -static void doublefault_fn(void) -{ - struct Xgt_desc_struct gdt_desc = {0, 0}; - unsigned long gdt, tss; - - store_gdt(&gdt_desc); - gdt = gdt_desc.address; - - printk(KERN_EMERG "PANIC: double fault, gdt at %08lx [%d bytes]\n", gdt, gdt_desc.size); - - if (ptr_ok(gdt)) { - gdt += GDT_ENTRY_TSS << 3; - tss = *(u16 *)(gdt+2); - tss += *(u8 *)(gdt+4) << 16; - tss += *(u8 *)(gdt+7) << 24; - printk(KERN_EMERG "double fault, tss at %08lx\n", tss); - - if (ptr_ok(tss)) { - struct i386_hw_tss *t = (struct i386_hw_tss *)tss; - - printk(KERN_EMERG "eip = %08lx, esp = %08lx\n", t->eip, t->esp); - - printk(KERN_EMERG "eax = %08lx, ebx = %08lx, ecx = %08lx, edx = %08lx\n", - t->eax, t->ebx, t->ecx, t->edx); - printk(KERN_EMERG "esi = %08lx, edi = %08lx\n", - t->esi, t->edi); - } - } - - for (;;) - cpu_relax(); -} - -struct tss_struct doublefault_tss __cacheline_aligned = { - .x86_tss = { - .esp0 = STACK_START, - .ss0 = __KERNEL_DS, - .ldt = 0, - .io_bitmap_base = INVALID_IO_BITMAP_OFFSET, - - .eip = (unsigned long) doublefault_fn, - /* 0x2 bit is always set */ - .eflags = X86_EFLAGS_SF | 0x2, - .esp = STACK_START, - .es = __USER_DS, - .cs = __KERNEL_CS, - .ss = __KERNEL_DS, - .ds = __USER_DS, - .fs = __KERNEL_PERCPU, - - .__cr3 = __pa(swapper_pg_dir) - } -}; |