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int __fastcall sub_401638(int a1, int a2, int a3, _DWORD *a4)
{
int result; // r0
int *v9; // r1
char *v10; // r7
int i; // r0
char v12; // t1
char *v13; // r6
int j; // r0
char v15; // t1
_DWORD *v16; // [sp+Ch] [bp-338h]
_BYTE v17[4]; // [sp+10h] [bp-334h] BYREF
int v18; // [sp+14h] [bp-330h]
int v19; // [sp+18h] [bp-32Ch]
int v20; // [sp+30h] [bp-314h] BYREF
int v21; // [sp+34h] [bp-310h] BYREF
int v22; // [sp+38h] [bp-30Ch] BYREF
int v23; // [sp+3Ch] [bp-308h] BYREF
_BYTE v24[256]; // [sp+40h] [bp-304h] BYREF
_BYTE v25[256]; // [sp+140h] [bp-204h] BYREF
_DWORD v26[64]; // [sp+240h] [bp-104h] BYREF
int v27; // [sp+340h] [bp-4h]
v27 = dword_401954;
v23 = 0;
v21 = 0;
v22 = 0;
sub_401130(a1: v25, a2: 256);
sub_401130(a1: v24, a2: 256);
v20 = a2;
sub_401130(a1: v17, a2: 32);
if ( sub_401C2A(a1: v17) == 0 )
{
result = 7;
switch ( v18 )
{
case 1:
goto LABEL_6;
case 4:
if ( v19 == 1 )
LABEL_6:
v9 = dword_4038D8;
else
v9 = (int *)sub_403D98;
goto LABEL_11;
case 5:
v9 = dword_404258;
goto LABEL_11;
case 6:
v9 = dword_401C58;
goto LABEL_11;
case 8:
v9 = dword_4025D8;
LABEL_11:
sub_401088(a1: 4220928, a2: v9, a3: 1216);
if ( sub_401C40(a1: 4220928) != 0 )
{
result = 8;
goto LABEL_24;
}
if ( MEMORY[0x406824] != 2048 )
{
result = 5;
goto LABEL_24;
}
v16 = a4;
v10 = (char *)v26;
sub_4010EC(a1: (char *)v26 + 3, a2: 253);
LOWORD(v26[0]) = MEMORY[0x406830];
LOBYTE(v21) = MEMORY[0x406832];
BYTE1(v21) = MEMORY[0x406831];
BYTE2(v21) = MEMORY[0x406830];
sub_401088(a1: v26, a2: 4220980, a3: 256);
for ( i = 255; i != -1; --i )
{
v12 = *v10++;
v24[i] = v12;
}
v13 = (char *)v26;
sub_401088(a1: v26, a2: 4221236, a3: 256);
a4 = v16;
for ( j = 255; j != -1; --j )
{
v15 = *v13++;
v25[j] = v15;
}
if ( sub_401A54(a1: -1593835472, a2: 2048, a3: &v22) == 0 )
{
v26[1] = &v21;
v26[4] = v25;
v26[5] = 256;
v26[7] = v24;
v26[8] = 256;
v26[6] = -1073741008;
v26[3] = -805306064;
v26[0] = -805305808;
v26[2] = 3;
if ( sub_401B86(a1: v22, a2: v26, a3: 3) == 0
&& sub_401A24(a1: &v23, a2: 1616970288, a3: 1, a4: 2048) == 0
&& sub_401BB6(a1: v23, a2: v22) == 0 )
{
break;
}
}
result = 9;
goto LABEL_24;
case 11:
case 12:
case 13:
case 14:
case 15:
case 16:
case 17:
abort();
default:
goto LABEL_24;
}
goto LABEL_26;
}
result = 6;
LABEL_24:
while ( dword_401954 != v27 )
{
((void (__fastcall *)(int, int))loc_401958)(a1: result, a2: dword_401954 - v27);
LABEL_26:
if ( sub_401A84(a1: v23, a2: 0, a3: 0, a4: a1, a5: a2, a6: a3, a7: &v20) != 0 )
{
if ( v22 != 0 )
sub_401AF6();
if ( v23 != 0 )
sub_401AD6();
result = 10;
}
else
{
*a4 = v20;
if ( v22 != 0 )
sub_401AF6();
if ( v23 != 0 )
sub_401AD6();
result = 0;
}
}
return result;
}
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