2006-10-06 10:09:41 +04:00
|
|
|
|
|
|
|
|
|
|
|
|
|
reg_eip equ ebp+4
|
|
|
|
|
reg_cs equ ebp+8
|
|
|
|
|
reg_eflags equ ebp+12
|
|
|
|
|
reg_esp equ ebp+16
|
|
|
|
|
reg_ss equ ebp+20
|
2006-10-07 13:47:03 +04:00
|
|
|
;fpu_ctrl equ ebp-28
|
2006-10-06 10:09:41 +04:00
|
|
|
|
|
|
|
|
align 4
|
|
|
|
|
except_16:
|
|
|
|
|
push ebp
|
|
|
|
|
mov ebp, esp
|
2006-10-07 13:47:03 +04:00
|
|
|
; sub esp, 28
|
2006-10-06 10:09:41 +04:00
|
|
|
|
|
|
|
|
push eax
|
|
|
|
|
push ebx
|
|
|
|
|
push ecx
|
|
|
|
|
push edx
|
|
|
|
|
|
|
|
|
|
mov ebx, [ss:CURRENT_TASK]
|
|
|
|
|
shl ebx, 8
|
|
|
|
|
|
|
|
|
|
mov eax, [ss:ebx+PROC_BASE+APPDATA.fpu_handler]
|
|
|
|
|
test eax, eax
|
|
|
|
|
jz .default
|
|
|
|
|
|
|
|
|
|
mov ecx, [reg_eip]
|
|
|
|
|
mov edx, [reg_esp]
|
|
|
|
|
sub edx, 4
|
|
|
|
|
mov [ss:edx+new_app_base], ecx
|
|
|
|
|
mov [reg_esp], edx
|
|
|
|
|
mov dword [reg_eip], eax
|
|
|
|
|
|
|
|
|
|
pop edx
|
|
|
|
|
pop ecx
|
|
|
|
|
pop ebx
|
|
|
|
|
pop eax
|
|
|
|
|
|
|
|
|
|
leave
|
|
|
|
|
iretd
|
|
|
|
|
|
|
|
|
|
.default:
|
2006-10-07 13:47:03 +04:00
|
|
|
pop edx
|
|
|
|
|
pop ecx
|
|
|
|
|
pop ebx
|
|
|
|
|
pop eax
|
|
|
|
|
leave
|
|
|
|
|
|
|
|
|
|
save_ring3_context ;debugger support
|
|
|
|
|
|
|
|
|
|
mov bl, 16
|
|
|
|
|
jmp exc_c
|
|
|
|
|
|
|
|
|
|
; fnstenv [fpu_ctrl]
|
|
|
|
|
; fnclex
|
|
|
|
|
; or word [fpu_ctrl], 0111111b
|
|
|
|
|
; fldenv [fpu_ctrl]
|
|
|
|
|
|
|
|
|
|
; pop edx
|
|
|
|
|
; pop ecx
|
|
|
|
|
; pop ebx
|
|
|
|
|
; pop eax
|
|
|
|
|
|
|
|
|
|
; leave
|
|
|
|
|
; iretd
|
|
|
|
|
|
|
|
|
|
align 16
|
|
|
|
|
except_19:
|
|
|
|
|
push ebp
|
|
|
|
|
mov ebp, esp
|
|
|
|
|
|
|
|
|
|
push eax
|
|
|
|
|
push ebx
|
|
|
|
|
push ecx
|
|
|
|
|
push edx
|
|
|
|
|
|
|
|
|
|
mov ebx, [ss:CURRENT_TASK]
|
|
|
|
|
shl ebx, 8
|
2006-10-06 10:09:41 +04:00
|
|
|
|
2006-10-07 13:47:03 +04:00
|
|
|
mov eax, [ss:ebx+PROC_BASE+APPDATA.sse_handler]
|
|
|
|
|
test eax, eax
|
|
|
|
|
jz .default
|
|
|
|
|
|
|
|
|
|
mov ecx, [reg_eip]
|
|
|
|
|
mov edx, [reg_esp]
|
|
|
|
|
sub edx, 4
|
|
|
|
|
mov [ss:edx+new_app_base], ecx
|
|
|
|
|
mov [reg_esp], edx
|
|
|
|
|
mov dword [reg_eip], eax
|
2006-10-06 10:09:41 +04:00
|
|
|
|
|
|
|
|
pop edx
|
|
|
|
|
pop ecx
|
|
|
|
|
pop ebx
|
|
|
|
|
pop eax
|
|
|
|
|
|
|
|
|
|
leave
|
|
|
|
|
iretd
|
|
|
|
|
|
2006-10-07 13:47:03 +04:00
|
|
|
.default:
|
|
|
|
|
pop edx
|
|
|
|
|
pop ecx
|
|
|
|
|
pop ebx
|
|
|
|
|
pop eax
|
|
|
|
|
leave
|
|
|
|
|
|
|
|
|
|
save_ring3_context ;debugger support
|
|
|
|
|
|
|
|
|
|
mov bl, 19
|
|
|
|
|
jmp exc_c
|
2006-10-06 10:09:41 +04:00
|
|
|
|
|
|
|
|
restore reg_eip
|
|
|
|
|
restore reg_cs
|
|
|
|
|
restore reg_eflags
|
|
|
|
|
restore reg_esp
|
|
|
|
|
restore reg_ss
|
2006-10-07 13:47:03 +04:00
|
|
|
;restore fpu_ctrl
|
