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| Rev 129 | Rev 133 | ||
|---|---|---|---|
| Line 136... | Line 136... | ||
| 136 | jnz .cleanfailed |
136 | jnz .cleanfailed |
| 137 | cmp [0x90004],word 'ET' |
137 | cmp [0x90004],word 'ET' |
| 138 | jnz .cleanfailed |
138 | jnz .cleanfailed |
| Line 139... | Line 139... | ||
| 139 | 139 | ||
| 140 | call get_app_params ;parse header fields |
- | |
| 141 | test esi, esi |
140 | call get_app_params ;parse header fields |
| Line 142... | Line 141... | ||
| 142 | jz .cleanfailed |
141 | jc .cleanfailed |
| 143 | 142 | ||
| 144 | mov eax,[new_process_place] |
143 | mov eax,[new_process_place] |
| 145 | inc ecx ; -0x1E = no memory |
144 | inc ecx ; -0x1E = no memory |
| Line 175... | Line 174... | ||
| 175 | and eax,not (4096-1) |
174 | and eax,not (4096-1) |
| 176 | call MEM_Get_Linear_Address |
175 | call MEM_Get_Linear_Address |
| 177 | mov edx,eax ;read file block to current page |
176 | mov edx,eax ;read file block to current page |
| 178 | mov eax,[esp+4] ;restore pointer to file name |
177 | mov eax,[esp+4] ;restore pointer to file name |
| 179 | mov ecx,8 ;number of blocks read |
178 | mov ecx,8 ;number of blocks read |
| - | 179 | mov ebp,edx ;save buffer address for .endofimage |
|
| 180 | push ebx |
180 | push ebx |
| 181 | mov edi,[esp+16] |
181 | mov edi,[esp+16] |
| 182 | ; cli |
182 | ; cli |
| 183 | call floppy_fileread |
183 | call floppy_fileread |
| 184 | ;ebx=file size |
184 | ;ebx=file size |
| 185 | ; sti |
185 | ; sti |
| 186 | pop ecx |
186 | pop ecx |
| - | 187 | add ecx,8 |
|
| - | 188 | test eax,eax |
|
| - | 189 | jnz .endloop1 ;check io errors |
|
| - | 190 | mov eax,[app_i_end] |
|
| - | 191 | add eax,511 |
|
| - | 192 | shr eax,9 |
|
| - | 193 | cmp ecx,eax |
|
| - | 194 | jg .endofimage ;we have loaded whole program |
|
| - | 195 | add ebx,511 |
|
| 187 | shr ebx,9 |
196 | shr ebx,9 |
| 188 | cmp ecx,ebx |
197 | cmp ecx,ebx |
| 189 | jg .endloop1 ;if end of file? |
198 | jg .endloop1 ;if end of file? |
| 190 | mov ebx,ecx |
199 | mov ebx,ecx |
| 191 | test eax,eax |
- | |
| 192 | jnz .endloop1 ;check io errors |
- | |
| 193 | pop edx |
200 | pop edx |
| 194 | add ebx,8 ;go to next page |
- | |
| 195 | add edx,4 |
201 | add edx,4 |
| 196 | jmp .loop1 |
202 | jmp .loop1 |
| Line -... | Line 203... | ||
| - | 203 | ||
| - | 204 | .endofimage: ;set to zero memory at end of page |
|
| - | 205 | mov ecx,[app_i_end] |
|
| - | 206 | and ecx,4096-1 |
|
| - | 207 | jz .endloop1 |
|
| - | 208 | lea edi,[ebp+ecx] |
|
| - | 209 | neg ecx |
|
| - | 210 | add ecx,4096 |
|
| - | 211 | xor eax,eax |
|
| - | 212 | cld |
|
| 197 | 213 | rep stosb |
|
| 198 | .endloop1: |
214 | .endloop1: |
| 199 | add esp,8+4 ;pop linear address of page table entry and pointer to file name |
215 | add esp,8+4 ;pop linear address of page table entry and pointer to file name |
| 200 | call new_start_application_fl.add_app_parameters |
216 | call new_start_application_fl.add_app_parameters |
| 201 | mov [esp+28],eax |
217 | mov [esp+28],eax |
| Line 301... | Line 317... | ||
| 301 | jnz .cleanfailed |
317 | jnz .cleanfailed |
| 302 | cmp [0x90004],word 'ET' |
318 | cmp [0x90004],word 'ET' |
| 303 | jnz .cleanfailed |
319 | jnz .cleanfailed |
| Line 304... | Line 320... | ||
| 304 | 320 | ||
| 305 | call get_app_params ;parse header fields |
- | |
| 306 | test esi,esi |
321 | call get_app_params ;parse header fields |
| Line 307... | Line 322... | ||
| 307 | jz .cleanfailed |
322 | jc .cleanfailed |
| 308 | 323 | ||
| 309 | mov eax,[new_process_place] |
324 | mov eax,[new_process_place] |
| 310 | inc ecx ; -0x1E = no memory |
325 | inc ecx ; -0x1E = no memory |
| Line 340... | Line 355... | ||
| 340 | and eax,not (4096-1) |
355 | and eax,not (4096-1) |
| 341 | call MEM_Get_Linear_Address |
356 | call MEM_Get_Linear_Address |
| 342 | mov edx,eax ;read file block to current page |
357 | mov edx,eax ;read file block to current page |
| 343 | mov eax,[esp+4] ;restore pointer to file name |
358 | mov eax,[esp+4] ;restore pointer to file name |
| 344 | mov ecx,8 ;number of blocks read |
359 | mov ecx,8 ;number of blocks read |
| - | 360 | mov ebp,edx ;save buffer address for .endofimage |
|
| 345 | push ebx |
361 | push ebx |
| 346 | cli |
362 | cli |
| 347 | call fileread |
363 | call fileread |
| 348 | ;ebx=file size |
364 | ;ebx=file size |
| 349 | call safe_sti |
365 | call safe_sti |
| 350 | pop ecx |
366 | pop ecx |
| - | 367 | add ecx,8 |
|
| - | 368 | test eax,eax |
|
| - | 369 | jnz .endloop1 ;check io errors |
|
| - | 370 | mov eax,[app_i_end] |
|
| - | 371 | add eax,511 |
|
| - | 372 | shr eax,9 |
|
| - | 373 | cmp ecx,eax |
|
| - | 374 | jg .endofimage ;we have loaded whole program |
|
| - | 375 | add ebx,511 |
|
| 351 | shr ebx,9 |
376 | shr ebx,9 |
| 352 | cmp ecx,ebx |
377 | cmp ecx,ebx |
| 353 | jg .endloop1 ;if end of file? |
378 | jg .endloop1 ;if end of file? |
| 354 | mov ebx,ecx |
379 | mov ebx,ecx |
| 355 | test eax,eax |
- | |
| 356 | jnz .endloop1 ;check io errors |
- | |
| 357 | pop edx |
380 | pop edx |
| 358 | add ebx,8 ;go to next page |
- | |
| 359 | add edx,4 |
381 | add edx,4 |
| 360 | jmp .loop1 |
382 | jmp .loop1 |
| Line -... | Line 383... | ||
| - | 383 | ||
| - | 384 | .endofimage: ;set to zero memory at end of page |
|
| - | 385 | mov ecx,[app_i_end] |
|
| - | 386 | and ecx,4096-1 |
|
| - | 387 | jz .endloop1 |
|
| - | 388 | lea edi,[ebp+ecx] |
|
| - | 389 | neg ecx |
|
| - | 390 | add ecx,4096 |
|
| - | 391 | xor eax,eax |
|
| - | 392 | cld |
|
| 361 | 393 | rep stosb |
|
| 362 | .endloop1: |
394 | .endloop1: |
| 363 | add esp,8 ;pop linear address of page table entry and pointer to file name |
395 | add esp,8 ;pop linear address of page table entry and pointer to file name |
| 364 | call .add_app_parameters |
396 | call .add_app_parameters |
| 365 | mov [esp+28],eax |
397 | mov [esp+28],eax |
| Line 1265... | Line 1297... | ||
| 1265 | mov ecx,512/4 |
1297 | mov ecx,512/4 |
| 1266 | cld |
1298 | cld |
| 1267 | rep movsd ;copy first block to 0x90000 address for get_app_params function |
1299 | rep movsd ;copy first block to 0x90000 address for get_app_params function |
| 1268 | call get_app_params |
1300 | call get_app_params |
| 1269 | mov ecx, -0x1F ; not Menuet/Kolibri executable |
1301 | mov ecx, -0x1F ; not Menuet/Kolibri executable |
| 1270 | test esi,esi |
- | |
| 1271 | jz .cleanfailed |
1302 | jc .cleanfailed |
| Line 1272... | Line 1303... | ||
| 1272 | 1303 | ||
| 1273 | mov eax,[new_process_place] |
1304 | mov eax,[new_process_place] |
| 1274 | inc ecx ; -0x1E = no memory |
1305 | inc ecx ; -0x1E = no memory |
| 1275 | call create_app_cr3_table ;create page directory |
1306 | call create_app_cr3_table ;create page directory |
| Line 1500... | Line 1531... | ||
| 1500 | jnz .cleanfailed |
1531 | jnz .cleanfailed |
| 1501 | cmp word [0x90004], 'ET' |
1532 | cmp word [0x90004], 'ET' |
| 1502 | jnz .cleanfailed |
1533 | jnz .cleanfailed |
| 1503 | call get_app_params |
1534 | call get_app_params |
| 1504 | mov ecx, -0x1F |
1535 | mov ecx, -0x1F |
| - | 1536 | jc .cleanfailed |
|
| - | 1537 | ; sanity check - because we will load all file, |
|
| - | 1538 | ; file size must be not greater than memory size |
|
| 1505 | test esi, esi |
1539 | mov eax, [esp+8+36] |
| - | 1540 | cmp [app_mem], eax |
|
| 1506 | jz .cleanfailed |
1541 | jb .cleanfailed |
| Line 1507... | Line 1542... | ||
| 1507 | 1542 | ||
| 1508 | mov eax, [new_process_place] |
1543 | mov eax, [new_process_place] |
| 1509 | inc ecx ; -0x1E = no memory |
1544 | inc ecx ; -0x1E = no memory |
| 1510 | call create_app_cr3_table |
1545 | call create_app_cr3_table |