Function at 0x10063920
Capabilities:
Read file on windows

Disassembly:
push ebp
mov ebp, esp
sub esp, 8
push ebx
push esi
push edi
mov edi, ecx
cmp dword [edi], 0xffffffff
jne 0x1006393f
push str.BIsOpen__
push 0x13d3
jmp 0x10063a15
mov esi, dword [ebp + 0xc]
mov ecx, bind
sub ecx, dword [edi + 0x10]
mov dword [ebp - 8], ecx
cmp esi, ecx
jbe 0x100639d2
mov eax, dword [ebp + 0x10]
test eax, eax
je 0x10063962
mov dword [eax], 0
xor edx, edx
mov dword [ebp + 0xc], edx
test esi, esi
je 0x100639ae
mov ebx, dword [ebp + 8]
mov edi, edi
lea eax, [ebp + 8]
mov dword [ebp + 8], 0
push eax
cmp ecx, esi
mov eax, esi
cmovb eax, ecx
mov ecx, edi
push eax
push ebx
call fcn.10063920
test al, al
je 0x10063a27
mov eax, dword [ebp + 8]
mov edx, dword [ebp + 0xc]
test eax, eax
je 0x100639ab
mov ecx, dword [ebp - 8]
add edx, eax
add ebx, eax
mov dword [ebp + 0xc], edx
sub esi, eax
jne 0x10063970
mov eax, dword [ebp + 0x10]
test eax, eax
jne 0x100639c5
test esi, esi
je 0x10063b23
pop edi
pop esi
xor al, al
pop ebx
mov esp, ebp
pop ebp
ret 0xc
pop edi
pop esi
mov dword [eax], edx
mov al, 1
pop ebx
mov esp, ebp
pop ebp
ret 0xc
cmp esi, 0x7fffffff
jb 0x100639f6
push str.cubBytesToRead___INT32_MAX
push 0x13f3
push str.c:_buildslave_steam_rel_client_win32_build_src_tier1_fileio.cpp
call fcn.10078380
add esp, 0xc
test al, al
jne 0x100639f6
int3
cmp byte [edi + 0x2c], 0
je 0x10063a9b
xor edx, edx
mov eax, esi
div dword [edi + 0x30]
test edx, edx
je 0x10063a32
push str.CFileReader::Read_must_be_called_with_a_cubData_value_that_is_a_multiple_of_the_sector_size_when_using_unbuffered_IO
push 0x13fa
push str.c:_buildslave_steam_rel_client_win32_build_src_tier1_fileio.cpp
call fcn.10078380
add esp, 0xc
test al, al
jne 0x10063a27
int3
pop edi
pop esi
xor al, al
pop ebx
mov esp, ebp
pop ebp
ret 0xc
cmp byte [0x10394edd], 0
jne 0x10063a67
test dword [ebp + 8], 0xfff
je 0x10063a67
push str.Unbuffered_read_should_be_called_with_pvData_buffer_that_is_aligned_to_system_page_size__4kb_
push 0x13ff
push str.c:_buildslave_steam_rel_client_win32_build_src_tier1_fileio.cpp
mov byte [0x10394edd], 1
call fcn.10078380
add esp, 0xc
test al, al
jne 0x10063a67
int3
cmp byte [0x10394ede], 0
jne 0x10063a9b
test esi, 0xfff
je 0x10063a9b
push str.Unbuffered_read_should_be_called_with_cubData_length_that_is_aligned_to_system_page_size__4kb_
push 0x1400
push str.c:_buildslave_steam_rel_client_win32_build_src_tier1_fileio.cpp
mov byte [0x10394ede], 1
call fcn.10078380
add esp, 0xc
test al, al
jne 0x10063a9b
int3
push dword [edi + 0xc]
xor ebx, ebx
mov dword [ebp - 4], esi
push dword [edi + 8]
mov ecx, edi
mov dword [ebp + 0xc], ebx
call fcn.10061b40
mov ecx, dword [edi + 8]
test al, al
je 0x10063b14
mov edx, dword [edi + 0x18]
mov ebx, edx
mov eax, dword [edi + 0x1c]
sub ebx, ecx
mov dword [ebp + 0xc], 0
sbb eax, dword [edi + 0xc]
add ebx, dword [edi + 0x20]
adc eax, dword [edi + 0x24]
cmp dword [ebp + 0xc], eax
ja 0x10063ae3
jb 0x10063adc
cmp esi, ebx
jae 0x10063ae3
mov ebx, esi
mov dword [ebp + 0xc], esi
jmp 0x10063aed
mov ebx, edx
sub ebx, ecx
add ebx, dword [edi + 0x20]
mov dword [ebp + 0xc], ebx
mov eax, dword [edi + 0x28]
sub eax, edx
push ebx
add eax, ecx
push eax
push dword [ebp + 8]
call fcn.10101520
add esp, 0xc
mov eax, esi
add dword [edi + 8], ebx
mov ecx, dword [edi + 8]
adc dword [edi + 0xc], 0
sub eax, ebx
mov dword [ebp - 4], eax
jmp 0x10063b16
mov eax, esi
test eax, eax
jne 0x10063b2e
mov eax, dword [ebp + 0x10]
test eax, eax
je 0x10063b23
mov dword [eax], esi
pop edi
pop esi
mov al, 1
pop ebx
mov esp, ebp
pop ebp
ret 0xc
cmp dword [edi + 0x28], 0
mov edx, eax
je 0x10063b46
cmp dword [edi + 0x14], 0
jb 0x10063b46
ja 0x10063b43
cmp dword [edi + 0x10], eax
jbe 0x10063b46
mov edx, dword [edi + 0x10]
mov eax, dword [edi + 0x10]
or eax, dword [edi + 0x14]
je 0x10063c0c
xor eax, eax
cmp edx, dword [edi + 0x10]
jne 0x10063c0c
cmp eax, dword [edi + 0x14]
jne 0x10063c0c
mov eax, dword [edi + 0xc]
push 0
mov dword [edi + 0x1c], eax
lea eax, [ebp - 8]
push eax
push edx
push dword [edi + 0x28]
mov dword [edi + 0x18], ecx
push dword [edi]
mov dword [ebp - 8], 0
call dword [sym.imp.KERNEL32.dll_ReadFile]
test eax, eax
jne 0x10063bdb
call dword [sym.imp.KERNEL32.dll_GetLastError]
test eax, eax
sete bl
xor ecx, ecx
mov dword [ebp - 8], ecx
test eax, eax
je 0x10063be3
xor edx, edx
xor ecx, ecx
test bl, bl
cmovne ecx, edx
cmp dword [ebp - 4], ecx
mov eax, ecx
cmovb eax, dword [ebp - 4]
add dword [edi + 8], eax
mov eax, dword [ebp + 0xc]
adc dword [edi + 0xc], 0
add eax, ecx
mov ecx, dword [ebp + 0x10]
test ecx, ecx
je 0x10063c53
cmp esi, eax
pop edi
cmovb eax, esi
mov dword [ecx], eax
mov al, bl
pop esi
pop ebx
mov esp, ebp
pop ebp
ret 0xc
mov ecx, dword [ebp - 8]
mov bl, 1
mov dword [ebp - 8], ecx
mov eax, ecx
cdq
mov dword [edi + 0x20], eax
mov eax, dword [ebp - 4]
cmp ecx, eax
mov dword [edi + 0x24], edx
cmovb eax, ecx
push eax
push dword [edi + 0x28]
mov eax, dword [ebp + 0xc]
add eax, dword [ebp + 8]
push eax
call fcn.10101520
mov edx, dword [ebp - 8]
add esp, 0xc
jmp 0x10063ba2
push 0
lea eax, [ebp - 8]
mov dword [ebp - 8], 0
push eax
mov eax, dword [ebp + 8]
push edx
add eax, ebx
push eax
push dword [edi]
call dword [sym.imp.KERNEL32.dll_ReadFile]
test eax, eax
jne 0x10063c36
call dword [sym.imp.KERNEL32.dll_GetLastError]
xor edx, edx
jmp 0x10063c3b
mov edx, dword [ebp - 8]
xor eax, eax
test eax, eax
mov dword [edi + 0x20], 0
mov dword [edi + 0x24], 0
sete bl
jmp 0x10063ba2
xor ecx, ecx
movzx ebx, bl
cmp esi, eax
pop edi
cmova ebx, ecx
pop esi
mov al, bl
pop ebx
mov esp, ebp
pop ebp
ret 0xc