big endian - double.reg

Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\SOFTWARE\Cheat Engine\CustomTypes\Double Big Endian]
"Script"="// http://forum.cheatengine.org/viewtopic.php?t=551054
// \"it's not a perfect conversion\"
alloc(TypeName,256)
alloc(ByteSize,4)
alloc(ConvertRoutine,1024)
alloc(ConvertBackRoutine,1024)
alloc(UsesFloat,4)
alloc(PreferedAlignment,4)
alloc(TEMPVAL,8)

TypeName:
db 'Double Big Endian',0
ByteSize:
dd 08
UsesFloat:
dd 01
PreferedAlignment:
dd 04
TEMPVAL:
dq 00

ConvertRoutine:
[32-bit]
push ebp
mov ebp,esp
//[ebp+8]=input
//example:
mov eax,[ebp+8] //place the address that contains the bytes into eax
mov eax,[eax]
bswap eax
mov [TEMPVAL+4],eax

mov eax,[ebp+8] //place the address that contains the bytes into eax
mov eax,[eax+4]
bswap eax
mov [TEMPVAL],eax

/*
// caused crash at one time, doesn't use SSE (newer instruction set)
finit
fld qword ptr [TEMPVAL]
fstp dword ptr [TEMPVAL]
*/
cvtss2sd xmm0,qword ptr [TEMPVAL]
movsd dword ptr [TEMPVAL],xmm0
mov eax,[TEMPVAL]

pop ebp
ret 4
[/32-bit]

[64-bit]
//rcx=address of input
mov rcx,[rcx] //rcx now contains the bytes 'input' pointed to
bswap rcx
mov [TEMPVAL],rcx

finit
fld qword ptr [TEMPVAL]
fstp dword ptr [TEMPVAL]
mov eax,[TEMPVAL]

ret
[/64-bit]

ConvertBackRoutine:
[32-bit]
push ebp
mov ebp,esp
//[ebp+8]=input
//[ebp+c]=address of output
//example:
push eax
push ebx
mov ebx,[ebp+c] //load the address into ebx

finit
fld dword ptr [ebp+8]
fstp qword ptr [TEMPVAL]

mov eax,[TEMPVAL+4]
bswap eax
mov [ebx],eax //write the value into the address

mov eax,[TEMPVAL]
bswap eax
mov [ebx+4],eax //write the value into the address

pop ebx
pop eax

pop ebp
ret 8
[/32-bit]

[64-bit]
//ecx=input
//rdx=address of output
mov [TEMPVAL],ecx

finit
fld dword ptr [TEMPVAL]
fstp qword ptr [TEMPVAL]

mov rax,[TEMPVAL]
bswap rax

mov [rdx],rax //place the integer the 8 bytes pointed to by rdx
ret
[/64-bit]
"