Search     or:     and:
 LINUX 
 Language 
 Kernel 
 Package 
 Book 
 Test 
 OS 
 Forum 
 iakovlev.org 
      Languages 
      Kernels 
      Packages 
      Books 
      Tests 
      OS 
      Forum 
      Математика 
NEWS
Последние статьи :
  Rust 07.11   
  Go 25.12   
  EXT4 10.11   
  FS benchmark 15.09   
  Сетунь 23.07   
  Trees 25.06   
  Apache 03.02   
  SQL 30.07   
  JFS 10.06   
  B-trees 01.06   
 
TOP 20
 Robbins 6...549 
 Go Web ...305 
 CPAN-> FAQ...230 
 Robbins...214 
 Python...179 
 Trees...166 
 Secure Programming for Li...158 
 Go...138 
 Kernel Notes...132 
 Linux Inline Assembly...131 
 C++ Templates 2...118 
 Autoconf...111 
 M.Pilgrim->Часть 2...94 
 Stewens -> IPC 6...93 
 Intel 386...90 
 M.Pilgrim->Часть 3...89 
 Httpd-> История Ap...87 
 Robbins 5...85 
 Cluster 4...81 
 Rubni-Corbet -> Глав...79 
 
  01.10.2019 : 2795711 посещений 

www.iakovlev.org
/*
 * asm.s contains the low-level code for most hardware faults.
 * page_exception is handled by the mm, so that isn't here. This
 * file also handles (hopefully) fpu-exceptions due to TS-bit, as
 * the fpu must be properly saved/resored. This hasn't been tested.
 */

.globl _divide_error,_debug,_nmi,_int3,_overflow,_bounds,_invalid_op
.globl _device_not_available,_double_fault,_coprocessor_segment_overrun
.globl _invalid_TSS,_segment_not_present,_stack_segment
.globl _general_protection,_coprocessor_error,_reserved

_divide_error:
	pushl $_do_divide_error
no_error_code:
	xchgl %eax,(%esp)
	pushl %ebx
	pushl %ecx
	pushl %edx
	pushl %edi
	pushl %esi
	pushl %ebp
	push %ds
	push %es
	push %fs
	pushl $0		# "error code"
	lea 44(%esp),%edx
	pushl %edx
	movl $0x10,%edx
	mov %dx,%ds
	mov %dx,%es
	mov %dx,%fs
	call *%eax
	addl $8,%esp
	pop %fs
	pop %es
	pop %ds
	popl %ebp
	popl %esi
	popl %edi
	popl %edx
	popl %ecx
	popl %ebx
	popl %eax
	iret

_debug:
	pushl $_do_int3		# _do_debug
	jmp no_error_code

_nmi:
	pushl $_do_nmi
	jmp no_error_code

_int3:
	pushl $_do_int3
	jmp no_error_code

_overflow:
	pushl $_do_overflow
	jmp no_error_code

_bounds:
	pushl $_do_bounds
	jmp no_error_code

_invalid_op:
	pushl $_do_invalid_op
	jmp no_error_code

math_emulate:
	popl %eax
	pushl $_do_device_not_available
	jmp no_error_code
_device_not_available:
	pushl %eax
	movl %cr0,%eax
	bt $2,%eax			# EM (math emulation bit)
	jc math_emulate
	clts				# clear TS so that we can use math
	movl _current,%eax
	cmpl _last_task_used_math,%eax
	je 1f				# shouldn't happen really ...
	pushl %ecx
	pushl %edx
	push %ds
	movl $0x10,%eax
	mov %ax,%ds
	call _math_state_restore
	pop %ds
	popl %edx
	popl %ecx
1:	popl %eax
	iret

_coprocessor_segment_overrun:
	pushl $_do_coprocessor_segment_overrun
	jmp no_error_code

_reserved:
	pushl $_do_reserved
	jmp no_error_code

_coprocessor_error:
	pushl $_do_coprocessor_error
	jmp no_error_code

_double_fault:
	pushl $_do_double_fault
error_code:
	xchgl %eax,4(%esp)		# error code <-> %eax
	xchgl %ebx,(%esp)		# &function <-> %ebx
	pushl %ecx
	pushl %edx
	pushl %edi
	pushl %esi
	pushl %ebp
	push %ds
	push %es
	push %fs
	pushl %eax			# error code
	lea 44(%esp),%eax		# offset
	pushl %eax
	movl $0x10,%eax
	mov %ax,%ds
	mov %ax,%es
	mov %ax,%fs
	call *%ebx
	addl $8,%esp
	pop %fs
	pop %es
	pop %ds
	popl %ebp
	popl %esi
	popl %edi
	popl %edx
	popl %ecx
	popl %ebx
	popl %eax
	iret

_invalid_TSS:
	pushl $_do_invalid_TSS
	jmp error_code

_segment_not_present:
	pushl $_do_segment_not_present
	jmp error_code

_stack_segment:
	pushl $_do_stack_segment
	jmp error_code

_general_protection:
	pushl $_do_general_protection
	jmp error_code