| 241,7 → 241,9 |
|---|
| @@: |
| xor eax, eax |
| xchg eax, [esi] |
| push eax |
| invlpg [edi] |
| pop eax |
| |
| test eax, 1 |
| jz .next |
| 417,7 → 419,9 |
|---|
| mov dword [app_page_tabs+edi*4], 2 |
| mov ebx, edi |
| shl ebx, 12 |
| push eax |
| invlpg [ebx] |
| pop eax |
| call free_page |
| |
| .next: add edi, 1 |
| 1283,6 → 1287,8 |
|---|
| @@: |
| mov [page_tabs+edi], eax |
| mov [page_tabs+edi+edx], eax |
| invlpg [ebx] |
| invlpg [ebx+0x10000] |
| add eax, 0x1000 |
| add ebx, 0x1000 |
| add edi, 4 |
| 1302,3 → 1308,182 |
|---|
| endp |
| |
| |
| |
| if 0 |
| |
| ; under constuction |
| |
| |
| shmem_list: |
| .bk dd shmem_list |
| .fd dd shmem_list |
| |
| |
| shmem |
| .bk dd ? |
| .fd dd ? |
| .base dd ? |
| .size dd ? |
| .access dd ? |
| .refcount dd ? |
| .name rb 32 |
| |
| |
| align 4 |
| proc shmem_open stdcall name:dword, size:dword, access:dword |
| locals |
| mapped dd ? |
| shm dd ? |
| pages dd ? |
| endl |
| |
| push esi |
| push edi |
| |
| mov [mapped], 0 |
| |
| mov eax, [name] |
| test eax, eax |
| jz .exit |
| |
| pushfd ;mutex required |
| cli |
| |
| mov ebx, [shmem_list.fd] |
| @@: |
| cmp ebx, shmem_list |
| je .not_found |
| |
| lea edx, [edx+24] ; link , base, size |
| stdcall strncmp, edx, eax, 32 |
| test eax, eax |
| je .found |
| |
| mov ebx, [ebx+4] |
| jmp @B |
| .found: ;check access rights |
| mov eax, [access] |
| test eax, SHM_CREATE |
| mov ecx, [ebx+8] |
| jnz .fail_exist |
| |
| and eax, ACC_MASK |
| and ecx, ACC_MASK |
| cmp eax, ecx |
| jne .fail_acc |
| |
| stdcall user_alloc, [ebx+12] |
| test eax, eax |
| mov [mapped], eax |
| jz .fail_mem |
| |
| mov eax, [ebx+4] |
| mov ecx, [ebx+12] |
| shr ecx, 12 |
| mov ebx, [mapped] |
| call commit_pages |
| .exit: |
| mov eax, [mapped] |
| pop edi |
| pop esi |
| ret |
| |
| .not_found: |
| mov eax, [access] |
| test eax, SHM_CREATE |
| mov ebx, E_NOTFOUND |
| jz .exit |
| |
| ;create shmem |
| mov ecx, [size] |
| test ecx, ecx |
| mov ebx, E_PARAM |
| jz .exit |
| |
| add ecx, 4095 |
| and ecx, -4096 |
| mov [size], ecx |
| stdcall user_alloc, ecx |
| test eax, eax |
| mov [mapped], eax |
| mov ebx, E_NOMEM |
| jz .exit |
| |
| mov eax, 24+32 |
| call malloc |
| test eax, eax |
| mov [shm], eax |
| mov ebx, E_NOMEM |
| jz .exit ;FIXME cleanup |
| |
| mov [eax+24+28], dword 0 |
| lea edx, [eax+24] |
| stdcall strncpy, edx, [name], 31 |
| |
| mov eax, [size] |
| shr eax, 12 |
| mov esi, eax |
| stdcall alloc_pages, eax |
| test eax, eax |
| mov [pages], eax |
| mov ebx, E_NOMEM |
| jz .exit ;FIXME cleanup |
| |
| mov edi, eax |
| add edi, [size] |
| and esi, 7 |
| add esi, -8 |
| jz @F |
| |
| ;release unused pages |
| |
| .release: |
| mov eax, edi |
| add edi, 4096 |
| call free_page |
| dec esi |
| jnz .release |
| |
| mov eax, [ebx+4] |
| mov ecx, [ebx+12] |
| shr ecx, 12 |
| mov ebx, [mapped] |
| call commit_pages |
| |
| mov eax, [access] |
| and eax, ACC_MASK |
| or eax, [pages] |
| mov ebx, [mapped] |
| mov ecx, [size] |
| shr ecx, 12 |
| call commit_pages |
| |
| mov edx, [shm] |
| mov ecx, [pages] |
| mov [edx+8], ecx |
| mov ecx, [size] |
| mov [edx+12], ecx |
| |
| ; mov [edx], shmem |
| ; mov [edx+4], [shmem.fd] |
| ; mov [shmem.fd.bk], edx |
| ; mov [shmem.fd], edx |
| |
| xor ebx, ebx |
| jmp .exit |
| |
| .fail_exist: |
| mov ebx, E_EXIST |
| xor eax, eax |
| ret |
| .fail_access: |
| mov ebx, E_ACCESS |
| xor eax, eax |
| ret |
| .fail_mem: |
| mov ebx, E_NOMEM |
| xor eax, eax |
| ret |
| endp |
| |
| end if |