Subversion Repositories Kolibri OS

Rev

Rev 103 | Go to most recent revision | Show entire file | Regard whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 103 Rev 115
Line 186... Line 186...
186 
 
 186 
 
187 
    mov   ebx,eax
 187 
    mov   ebx,eax
188 
    mov   eax,[general_page_table]
 188 
    mov   eax,[general_page_table]
189 
    call  simple_clone_cr3_table ;clone general page table
 189 
    call  simple_clone_cr3_table ;clone general page table
190 
    shl   ebx,8
 190 
    shl   ebx,8
Line 191... Line 191...
191 
    mov   [second_base_address+0x80000+ebx+0xB8],eax ;save address of page directory
 191 
    mov   [second_base_address+0x80000+ebx+APPDATA.dir_table],eax ;save address of page directory
192
192
193 
    pop   ebx
 193 
    pop   ebx
194 
    ret
 194 
    ret
195 
;-----------------------------------------------------------------------------
 195 
;-----------------------------------------------------------------------------
196 
get_cr3_table:
 196 
get_cr3_table:
197 
;Input:
 197 
;Input:
198 
;  eax - slot of process
198 
;  eax - slot of process
199 
;result:
 199 
;result:
200 
;  eax - physical address of page directory
 200 
;  eax - physical address of page directory
201 
   shl    eax,8                  ;size of process extended information=256 bytes
 201 
   shl    eax,8                  ;size of process extended information=256 bytes
202 
   mov    eax,[second_base_address+0x80000+eax+0xB8]
 202 
   mov    eax,[second_base_address+0x80000+eax+APPDATA.dir_table]
203 
   ret
 203 
   ret
204 
;-----------------------------------------------------------------------------
204 
;-----------------------------------------------------------------------------
205 
dispose_app_cr3_table:
 205 
dispose_app_cr3_table:
Line 211... Line 211...
211 
;page tables and all memory of process.
 211 
;page tables and all memory of process.
212 
    pushad
 212 
    pushad
213 
    mov   ebp,eax
 213 
    mov   ebp,eax
214 
;ebp = process slot in the procedure.
 214 
;ebp = process slot in the procedure.
215 
    shl   eax,8
 215 
    shl   eax,8
216 
    mov   eax,[second_base_address+0x80000+eax+0xB8]
 216 
    mov   eax,[second_base_address+0x80000+eax+APPDATA.dir_table]
217 
    mov   ebx,eax
 217 
    mov   ebx,eax
218 
;ebx = physical address of page directory
218 
;ebx = physical address of page directory
219 
    call  MEM_Get_Linear_Address
 219 
    call  MEM_Get_Linear_Address
220 
    mov   edi,eax
 220 
    mov   edi,eax
221 
;edi = linear address of page directory
221 
;edi = linear address of page directory
Line 232... Line 232...
232
232
233 
.loop:
 233 
.loop:
234 
;eax = current slot of process
234 
;eax = current slot of process
235 
    mov   ecx,eax
 235 
    mov   ecx,eax
236 
    shl   ecx,5
 236 
    shl   ecx,5
237 
    cmp   byte [second_base_address+0x3000+ecx+0xa],9 ;if process running?
 237 
    cmp   byte [second_base_address+0x3000+ecx+TASKDATA.state],9 ;if process running?
238 
    jz    .next                  ;skip empty slots
 238 
    jz    .next                  ;skip empty slots
239 
    shl   ecx,3
 239 
    shl   ecx,3
240 
    cmp   [second_base_address+0x80000+ecx+0xB8],ebx  ;compare page directory addresses
 240 
    cmp   [second_base_address+0x80000+ecx+APPDATA.dir_table],ebx  ;compare page directory addresses
241 
    jnz   .next
 241 
    jnz   .next
242 
    inc   edx                    ;thread found
 242 
    inc   edx                    ;thread found
243 
.next:
 243 
.next:
244 
    inc   eax
 244 
    inc   eax