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Some corrections in new file system functions. Added sysfuncr.txt docs.

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git-svn-id: svn://kolibrios.org@77 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Evgeny Grechnikov (Diamond)
2006-05-10 14:30:38 +00:00
parent c9d4558817
commit 0b65f18e93
5 changed files with 4302 additions and 71 deletions
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37
kernel/trunk/blkdev/rd.inc
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@@ -927,7 +927,7 @@ rd_find_lfn:
; ecx number of bytes to read, 0+
; edx mem location to return data
;
; ret ebx = size or 0xffffffff file not found
; ret ebx = bytes read or 0xffffffff file not found
; eax = 0 ok read or other = errormsg
;
;--------------------------------------------------------------
@@ -950,7 +950,7 @@ fs_RamdiskRead:
jz .l1
cmp dword [ebx+4], 0
jz @f
mov ebx, [edi+28]
xor ebx, ebx
.reteof:
mov eax, 6 ; EOF
pop edi
@@ -958,10 +958,17 @@ fs_RamdiskRead:
@@:
mov ebx, [ebx]
.l1:
push dword [edi+28] ; file size
push dword [edi+28]
movzx edi, word [edi+26] ; cluster
push ecx edx
push 0
mov eax, [edi+28]
sub eax, ebx
jb .eof
cmp eax, ecx
jae @f
mov ecx, eax
mov byte [esp], 6 ; EOF
@@:
movzx edi, word [edi+26] ; cluster
.new:
jecxz .done
test edi, edi
@@ -980,31 +987,25 @@ fs_RamdiskRead:
cmp ecx, ebx
jbe @f
mov ecx, ebx
@@:
cmp ecx, [esp+12]
jbe @f
mov ecx, [esp+12]
@@:
mov ebx, edx
call memmove
add edx, ecx
sub [esp], ecx
sub [esp+12], ecx
pop ecx
xor ebx, ebx
cmp [esp+8], ebx
jnz .skip
jecxz .done
jmp .eof
.skip:
movzx edi, word [edi*2+0x280000] ; find next cluster from FAT
jmp .new
.eof:
pop edx ecx ebx ebx
mov ebx, edx
pop eax edx ecx
sub ebx, edx
jmp .reteof
.done:
pop edx ecx ebx ebx edi
xor eax, eax
mov ebx, edx
pop eax edx ecx edi
sub ebx, edx
ret
;----------------------------------------------------------------
@@ -1065,7 +1066,7 @@ fs_RamdiskReadFolder:
jb .l1
add esp, 262*2+4
pop ebp
mov ebx, [edx+8]
mov ebx, [edx+4]
xor eax, eax
dec ecx
js @f