[Bug 43567] Vietcong - game crashes during radiocalls

[wine-bugs at winehq.org]

https://bugs.winehq.org/show_bug.cgi?id=43567

--- Comment #6 from Jan Havran <havran.jan at email.cz> ---
To make it complete, one last post. Here is disassembled code of full version
which I prepared yesterday:

0x008058cc EntryPoint+0xffffffff in game: movl    $0x8058e4,%ecx ; < here store
the address
0x008058d1 EntryPoint+0xffffffff in game: movl    $0x4,%eax
0x008058d6 EntryPoint+0xffffffff in game: addl    $15103168,%eax
0x008058db EntryPoint+0xffffffff in game: movl    0x0(%eax),%eax
0x008058dd EntryPoint+0xffffffff in game: subl    $1480757628,%eax
0x008058e2 EntryPoint+0xffffffff in game: jmp    *%eax

Register dump:
 CS:0023 SS:002b DS:002b ES:002b FS:0063 GS:006b
 EIP:008058e2 ESP:0033f5a0 EBP:0033f764 EFLAGS:00000212(   - --  I   -A- - )
 EAX:004068ec EBX:00000000 ECX:008058e4 EDX:3e800000
 ESI:1013c280 EDI:00000000

the code where eax points is:
0x004068ec EntryPoint+0xffffffff in vietcong: call    *0x4e4000 -> 0x00427960
EntryPoint+0xffffffff in vietcong ; < here are made some other calls, like
GetCurrentThreadId() and GetTickCount()
0x004068f2 EntryPoint+0xffffffff in vietcong: jmp    *%ecx ; < ecx has to be
untouched

After the return from call, the registers are (ECX has been changed):
Register dump:
 CS:0023 SS:002b DS:002b ES:002b FS:0063 GS:006b
 EIP:004068f2 ESP:0033f5a0 EBP:0033f764 EFLAGS:00000246(   - --  I  Z- -P- )
 EAX:0b5b30b7 EBX:00000000 ECX:0033f590 EDX:00000000
 ESI:1013c280 EDI:00000000

So except the GetTickCount(), my guess is that also the GetCurrentThreadId()
can not touch the ECX register. I wanted to make some tests for it but now it
looks like it would be useless to do.

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