Subversion Repositories Kolibri OS

Rev

Rev 3400 | Rev 3696 | Go to most recent revision | Show entire file | Regard whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 3400 Rev 3539
Line 3... Line 3...
3 
;; Copyright (C) KolibriOS team 2007-2012. All rights reserved. ;;
 3 
;; Copyright (C) KolibriOS team 2007-2012. All rights reserved. ;;
4 
;; Distributed under terms of the GNU General Public License    ;;
 4 
;; Distributed under terms of the GNU General Public License    ;;
5 
;;                                                              ;;
 5 
;;                                                              ;;
6 
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 6 
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
Line 7... Line 7...
7 
 
 7 
 
Line 8... Line 8...
8 
$Revision: 3400 $
 8 
$Revision: 3539 $
9 
 
 9 
 
Line 10... Line 10...
10 
; Virtual-8086 mode manager
 10 
; Virtual-8086 mode manager
Line 176... Line 176...
176 
; Allocate memory in V86 machine
 176 
; Allocate memory in V86 machine
177 
; in: eax=size (in bytes)
 177 
; in: eax=size (in bytes)
178 
;     esi=handle
 178 
;     esi=handle
179 
; out: eax=V86 address, para-aligned (0x10 multiple)
 179 
; out: eax=V86 address, para-aligned (0x10 multiple)
180 
; destroys: nothing
 180 
; destroys: nothing
181 
; ­¥¤®¯¨á ­ !!!
 181 
; недописана!!!
182 
;v86_alloc:
 182 
;v86_alloc:
183 
;        push    ebx ecx edx edi
 183 
;        push    ebx ecx edx edi
184 
;        lea     ebx, [esi+V86_machine.mutex]
 184 
;        lea     ebx, [esi+V86_machine.mutex]
185 
;        call    wait_mutex
 185 
;        call    wait_mutex
186 
;        add     eax, 0x1F
 186 
;        add     eax, 0x1F
Line 375... Line 375...
375 
; If faulted EIP exceeds 0xFFFF, we have #GP and it is an error
 375 
; If faulted EIP exceeds 0xFFFF, we have #GP and it is an error
376 
        cmp     word [esp+v86_regs.eip+2], 0
 376 
        cmp     word [esp+v86_regs.eip+2], 0
377 
        jnz     .nogp
 377 
        jnz     .nogp
378 
; Otherwise we can safely access byte at CS:IP
 378 
; Otherwise we can safely access byte at CS:IP
379 
; (because it is #GP, not #PF handler)
 379 
; (because it is #GP, not #PF handler)
380 
; …᫨ ¡ë ¬ë ¬®£«¨ áå«®¯®â âì ¨áª«î祭¨¥ ⮫쪮 ¨§-§  ç⥭¨ï ¡ ©â®¢ ª®¤ ,
 380 
; Если бы мы могли схлопотать исключение только из-за чтения байтов кода,
381 
; ¬ë ¡ë ¥£® 㦥 áå«®¯®â «¨ ¨ íâ® ¡ë«® ¡ë ­¥ #GP
 381 
; мы бы его уже схлопотали и это было бы не #GP
382 
        movzx   esi, word [esp+v86_regs.cs]
 382 
        movzx   esi, word [esp+v86_regs.cs]
383 
        shl     esi, 4
 383 
        shl     esi, 4
384 
        add     esi, [esp+v86_regs.eip]
 384 
        add     esi, [esp+v86_regs.eip]
385 
        lodsb
 385 
        lodsb
386 
        cmp     al, 0xCD        ; int xx command = CD xx
 386 
        cmp     al, 0xCD        ; int xx command = CD xx