forked from KolibriOS/kolibrios
Some corrections in new file system functions. Added sysfuncr.txt docs.
git-svn-id: svn://kolibrios.org@77 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Evgeny Grechnikov (Diamond)
parent
c9d4558817
commit
0b65f18e93
@ -927,7 +927,7 @@ rd_find_lfn:
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; ecx number of bytes to read, 0+
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; edx mem location to return data
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;
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; ret ebx = size or 0xffffffff file not found
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; ret ebx = bytes read or 0xffffffff file not found
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; eax = 0 ok read or other = errormsg
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;
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;--------------------------------------------------------------
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@ -950,7 +950,7 @@ fs_RamdiskRead:
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jz .l1
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cmp dword [ebx+4], 0
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jz @f
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mov ebx, [edi+28]
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xor ebx, ebx
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.reteof:
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mov eax, 6 ; EOF
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pop edi
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@ -958,10 +958,17 @@ fs_RamdiskRead:
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@@:
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mov ebx, [ebx]
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.l1:
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push dword [edi+28] ; file size
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push dword [edi+28]
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movzx edi, word [edi+26] ; cluster
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push ecx edx
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push 0
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mov eax, [edi+28]
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sub eax, ebx
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jb .eof
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cmp eax, ecx
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jae @f
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mov ecx, eax
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mov byte [esp], 6 ; EOF
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@@:
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movzx edi, word [edi+26] ; cluster
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.new:
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jecxz .done
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test edi, edi
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@ -980,31 +987,25 @@ fs_RamdiskRead:
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cmp ecx, ebx
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jbe @f
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mov ecx, ebx
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@@:
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cmp ecx, [esp+12]
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jbe @f
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mov ecx, [esp+12]
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@@:
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mov ebx, edx
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call memmove
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add edx, ecx
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sub [esp], ecx
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sub [esp+12], ecx
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pop ecx
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xor ebx, ebx
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cmp [esp+8], ebx
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jnz .skip
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jecxz .done
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jmp .eof
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.skip:
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movzx edi, word [edi*2+0x280000] ; find next cluster from FAT
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jmp .new
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.eof:
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pop edx ecx ebx ebx
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mov ebx, edx
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pop eax edx ecx
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sub ebx, edx
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jmp .reteof
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.done:
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pop edx ecx ebx ebx edi
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xor eax, eax
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mov ebx, edx
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pop eax edx ecx edi
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sub ebx, edx
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ret
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;----------------------------------------------------------------
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@ -1065,7 +1066,7 @@ fs_RamdiskReadFolder:
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jb .l1
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add esp, 262*2+4
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pop ebp
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mov ebx, [edx+8]
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mov ebx, [edx+4]
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xor eax, eax
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dec ecx
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js @f
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4233
kernel/trunk/docs/sysfuncr.txt
Normal file
4233
kernel/trunk/docs/sysfuncr.txt
Normal file
File diff suppressed because it is too large
Load Diff
@ -1174,7 +1174,7 @@ fd_find_lfn:
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; ecx number of bytes to read, 0+
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; edx mem location to return data
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;
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; ret ebx = size or 0xffffffff file not found
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; ret ebx = bytes read or 0xffffffff file not found
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; eax = 0 ok read or other = errormsg
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;
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;--------------------------------------------------------------
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@ -1198,7 +1198,7 @@ fs_FloppyRead:
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jz .l1
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cmp dword [ebx+4], 0
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jz @f
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mov ebx, [edi+28]
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xor ebx, ebx
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.reteof:
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mov eax, 6 ; EOF
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pop edi
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@ -1206,18 +1206,24 @@ fs_FloppyRead:
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@@:
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mov ebx, [ebx]
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.l1:
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push dword [edi+28]
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push dword [edi+28]
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movzx edi, word [edi+26]
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push ecx edx
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push 0
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mov eax, [edi+28]
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sub eax, ebx
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jb .eof
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cmp eax, ecx
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jae @f
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mov ecx, eax
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mov byte [esp], 6 ; EOF
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@@:
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movzx edi, word [edi+26]
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.new:
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jecxz .done
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test edi, edi
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jz .eof
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cmp edi, 0xFF8
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jae .eof
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mov eax, edi
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add eax, 31
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lea eax, [edi+31]
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pusha
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call read_chs_sector
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popa
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@ -1225,42 +1231,36 @@ fs_FloppyRead:
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jnz .err
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sub ebx, 512
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jae .skip
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lea eax, [eax+ebx+512]
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lea eax, [0xD000+ebx+512]
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neg ebx
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push ecx
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cmp ecx, ebx
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jbe @f
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mov ecx, ebx
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@@:
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cmp ecx, [esp+12]
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jbe @f
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mov ecx, [esp+12]
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@@:
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mov ebx, edx
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mov eax, 0xD000
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call memmove
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add edx, ecx
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sub [esp], ecx
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sub [esp+12], ecx
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pop ecx
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xor ebx, ebx
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cmp [esp+8], ebx
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jnz .skip
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jecxz .done
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jmp .eof
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.skip:
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movzx edi, word [edi*2+0x282000]
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jmp .new
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.done:
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pop edx ecx ebx ebx edi
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xor eax, eax
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mov ebx, edx
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pop eax edx ecx edi
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sub ebx, edx
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ret
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.eof:
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pop edx ecx ebx ebx
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mov ebx, edx
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pop eax edx ecx
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jmp .reteof
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.err:
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mov eax, 5 ; may be other error code?
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pop edx ecx ebx ebx edi
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mov ebx, edx
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pop eax edx ecx edi
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sub ebx, edx
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mov al, 5 ; may be other error code?
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ret
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;----------------------------------------------------------------
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@ -1272,7 +1272,7 @@ fs_FloppyRead:
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; ecx number of blocks to read, 0+
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; edx mem location to return data
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;
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; ret ebx = size or 0xffffffff folder not found
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; ret ebx = blocks read or 0xffffffff folder not found
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; eax = 0 ok read or other = errormsg
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;
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;--------------------------------------------------------------
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@ -1388,7 +1388,7 @@ fs_FloppyReadFolder:
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.done:
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add esp, 262*2+4
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pop ebp
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mov ebx, [edx+8]
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mov ebx, [edx+4]
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xor eax, eax
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dec ecx
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js @f
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@ -3053,7 +3053,7 @@ hd_find_lfn:
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; ecx number of bytes to read, 0+
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; edx mem location to return data
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;
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; ret ebx = size or 0xffffffff file not found
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; ret ebx = bytes read or 0xffffffff file not found
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; eax = 0 ok read or other = errormsg
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;
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;--------------------------------------------------------------
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@ -3099,7 +3099,7 @@ fs_HdRead:
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jz .l1
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cmp dword [ebx+4], 0
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jz @f
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mov ebx, [edi+28]
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xor ebx, ebx
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.reteof:
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mov eax, 6
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pop edi
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@ -3107,11 +3107,18 @@ fs_HdRead:
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@@:
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mov ebx, [ebx]
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.l1:
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push dword [edi+28] ; file size
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push ecx edx
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push 0
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mov eax, [edi+28]
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sub eax, ebx
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jb .eof
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cmp eax, ecx
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jae @f
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mov ecx, eax
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mov byte [esp], 6
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@@:
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mov eax, [edi+20-2]
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mov ax, [edi+26]
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push ecx edx
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push dword [edi+28]
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; now eax=cluster, ebx=position, ecx=count, edx=buffer for data
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.new_cluster:
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jecxz .new_sector
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@ -3134,19 +3141,15 @@ fs_HdRead:
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jnz .force_buf
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cmp ecx, 512
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jb .force_buf
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cmp dword [esp], 512
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jb .force_buf
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; we may read directly to given buffer
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push ebx
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mov ebx, edx
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call hd_read
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cmp [hd_error],0
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jne .noaccess_1
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pop ebx
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add edx, 512
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sub ecx, 512
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sub dword [esp], 512
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jmp .skip
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.force_buf:
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; we must read sector to temporary buffer and then copy it to destination
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@ -3166,22 +3169,13 @@ fs_HdRead:
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mov ecx, 512
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@@:
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sub ecx, ebx
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cmp ecx, [esp+8]
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jbe @f
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mov ecx, [esp+8]
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@@:
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mov ebx, edx
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call memmove
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add edx, ecx
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sub [esp], ecx
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sub [esp+8], ecx
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pop ecx
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pop eax
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xor ebx, ebx
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cmp [esp], ebx
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jnz .skip
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jecxz .done
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jmp .eof
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.skip:
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inc eax
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dec edi
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@ -3193,11 +3187,14 @@ fs_HdRead:
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jmp .new_cluster
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.done:
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pop ebx edx ecx ebx edi
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xor eax, eax
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mov ebx, edx
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pop eax edx ecx edi
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sub ebx, edx
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ret
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.eof:
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pop ebx edx ecx ebx
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mov ebx, edx
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pop eax edx ecx
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sub ebx, edx
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jmp .reteof
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;----------------------------------------------------------------
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@ -3209,7 +3206,7 @@ fs_HdRead:
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; ecx number of blocks to read, 0+
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; edx mem location to return data
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;
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; ret ebx = size or 0xffffffff folder not found
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; ret ebx = blocks read or 0xffffffff folder not found
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; eax = 0 ok read or other = errormsg
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;
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;--------------------------------------------------------------
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@ -3358,7 +3355,7 @@ fs_HdReadFolder:
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.done:
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add esp, 262*2+4+8
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pop ebp
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mov ebx, [edx+8]
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mov ebx, [edx+4]
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xor eax, eax
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dec ecx
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js @f
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@ -72,7 +72,7 @@ drawbar dd __sys_drawbar
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putpixel dd __sys_putpixel
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; } mike.dld
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version db 'Kolibri OS version 0.5.3.0 ',13,10,13,10,0
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version db 'Kolibri OS version 0.5.3.1 ',13,10,13,10,0
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;dd endofcode-0x10000
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;db 'Boot02'
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@ -148,7 +148,7 @@ app_data equ 3+app_data_l-gdts
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or eax, ecx
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and eax, 10011111b *65536*256 + 0xffffff ; caching enabled
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mov cr0, eax
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jmp byte $+2
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jmp $+2
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mov ax,os_data ; Selector for os
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mov ds,ax
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mov es,ax
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@ -2305,7 +2305,7 @@ endg
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iglobal
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version_inf:
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db 0,5,3,0 ; version 0.5.3.0
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db 0,5,3,1 ; version 0.5.3.1
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db UID_KOLIBRI
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db 'Kolibri',0
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version_end:
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