Rev 75 | Rev 78 | Go to most recent revision | Show entire file | Regard whitespace | Details | Blame | Last modification | View Log | RSS feed
| Rev 75 | Rev 77 | ||
|---|---|---|---|
| Line 925... | Line 925... | ||
| 925 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
925 | ; ebx pointer to 64-bit number = first wanted byte, 0+ |
| 926 | ; may be ebx=0 - start from first byte |
926 | ; may be ebx=0 - start from first byte |
| 927 | ; ecx number of bytes to read, 0+ |
927 | ; ecx number of bytes to read, 0+ |
| 928 | ; edx mem location to return data |
928 | ; edx mem location to return data |
| 929 | ; |
929 | ; |
| 930 | ; ret ebx = size or 0xffffffff file not found |
930 | ; ret ebx = bytes read or 0xffffffff file not found |
| 931 | ; eax = 0 ok read or other = errormsg |
931 | ; eax = 0 ok read or other = errormsg |
| 932 | ; |
932 | ; |
| 933 | ;-------------------------------------------------------------- |
933 | ;-------------------------------------------------------------- |
| 934 | fs_RamdiskRead: |
934 | fs_RamdiskRead: |
| 935 | cmp byte [esi], 0 |
935 | cmp byte [esi], 0 |
| Line 948... | Line 948... | ||
| 948 | .found: |
948 | .found: |
| 949 | test ebx, ebx |
949 | test ebx, ebx |
| 950 | jz .l1 |
950 | jz .l1 |
| 951 | cmp dword [ebx+4], 0 |
951 | cmp dword [ebx+4], 0 |
| 952 | jz @f |
952 | jz @f |
| 953 | mov ebx, [edi+28] |
953 | xor ebx, ebx |
| 954 | .reteof: |
954 | .reteof: |
| 955 | mov eax, 6 ; EOF |
955 | mov eax, 6 ; EOF |
| 956 | pop edi |
956 | pop edi |
| 957 | ret |
957 | ret |
| 958 | @@: |
958 | @@: |
| 959 | mov ebx, [ebx] |
959 | mov ebx, [ebx] |
| 960 | .l1: |
960 | .l1: |
| 961 | push dword [edi+28] ; file size |
- | |
| 962 | push dword [edi+28] |
- | |
| 963 | movzx edi, word [edi+26] ; cluster |
- | |
| 964 | push ecx edx |
961 | push ecx edx |
| - | 962 | push 0 |
|
| - | 963 | mov eax, [edi+28] |
|
| - | 964 | sub eax, ebx |
|
| - | 965 | jb .eof |
|
| - | 966 | cmp eax, ecx |
|
| - | 967 | jae @f |
|
| - | 968 | mov ecx, eax |
|
| - | 969 | mov byte [esp], 6 ; EOF |
|
| - | 970 | @@: |
|
| - | 971 | movzx edi, word [edi+26] ; cluster |
|
| 965 | .new: |
972 | .new: |
| 966 | jecxz .done |
973 | jecxz .done |
| 967 | test edi, edi |
974 | test edi, edi |
| 968 | jz .eof |
975 | jz .eof |
| 969 | cmp edi, 0xFF8 |
976 | cmp edi, 0xFF8 |
| Line 979... | Line 986... | ||
| 979 | push ecx |
986 | push ecx |
| 980 | cmp ecx, ebx |
987 | cmp ecx, ebx |
| 981 | jbe @f |
988 | jbe @f |
| 982 | mov ecx, ebx |
989 | mov ecx, ebx |
| 983 | @@: |
990 | @@: |
| 984 | cmp ecx, [esp+12] |
- | |
| 985 | jbe @f |
- | |
| 986 | mov ecx, [esp+12] |
- | |
| 987 | @@: |
- | |
| 988 | mov ebx, edx |
991 | mov ebx, edx |
| 989 | call memmove |
992 | call memmove |
| 990 | add edx, ecx |
993 | add edx, ecx |
| 991 | sub [esp], ecx |
994 | sub [esp], ecx |
| 992 | sub [esp+12], ecx |
- | |
| 993 | pop ecx |
995 | pop ecx |
| 994 | xor ebx, ebx |
996 | xor ebx, ebx |
| 995 | cmp [esp+8], ebx |
- | |
| 996 | jnz .skip |
- | |
| 997 | jecxz .done |
- | |
| 998 | jmp .eof |
- | |
| 999 | .skip: |
997 | .skip: |
| 1000 | movzx edi, word [edi*2+0x280000] ; find next cluster from FAT |
998 | movzx edi, word [edi*2+0x280000] ; find next cluster from FAT |
| 1001 | jmp .new |
999 | jmp .new |
| 1002 | .eof: |
1000 | .eof: |
| - | 1001 | mov ebx, edx |
|
| 1003 | pop edx ecx ebx ebx |
1002 | pop eax edx ecx |
| - | 1003 | sub ebx, edx |
|
| 1004 | jmp .reteof |
1004 | jmp .reteof |
| 1005 | .done: |
1005 | .done: |
| - | 1006 | mov ebx, edx |
|
| 1006 | pop edx ecx ebx ebx edi |
1007 | pop eax edx ecx edi |
| 1007 | xor eax, eax |
1008 | sub ebx, edx |
| 1008 | ret |
1009 | ret |
| Line 1009... | Line 1010... | ||
| 1009 | 1010 | ||
| 1010 | ;---------------------------------------------------------------- |
1011 | ;---------------------------------------------------------------- |
| 1011 | ; |
1012 | ; |
| Line 1063... | Line 1064... | ||
| 1063 | add edi, 0x20 |
1064 | add edi, 0x20 |
| 1064 | cmp edi, 0x100000+512*33 |
1065 | cmp edi, 0x100000+512*33 |
| 1065 | jb .l1 |
1066 | jb .l1 |
| 1066 | add esp, 262*2+4 |
1067 | add esp, 262*2+4 |
| 1067 | pop ebp |
1068 | pop ebp |
| 1068 | mov ebx, [edx+8] |
1069 | mov ebx, [edx+4] |
| 1069 | xor eax, eax |
1070 | xor eax, eax |
| 1070 | dec ecx |
1071 | dec ecx |
| 1071 | js @f |
1072 | js @f |
| 1072 | mov al, ERROR_END_OF_FILE |
1073 | mov al, ERROR_END_OF_FILE |
| 1073 | @@: |
1074 | @@: |