[PATCH v2 0/4] MR375: ntdll: Fixes for runtime 64-bit shift functions.

[Jinoh Kang (@iamahuman)]

Jinoh Kang (@iamahuman) commented about dlls/ntdll/tests/large_int.c:
>  static void test_builtins(void)
>  {
>  #ifdef __i386__
> +    void *code_mem;
>      ULONGLONG u;
>      LONGLONG l;
>  
> +    static const BYTE call_shift_code[] =
> +    {
> +        0x31, 0xc0,             /* xorl %eax,%eax */
> +        0x31, 0xd2,             /* xorl %edx,%edx */
> +        0x31, 0xc9,             /* xorl %ecx,%ecx */
> +        0x87, 0x44, 0x24, 0x08, /* xchgl 8(%esp),%eax */
> +        0x87, 0x54, 0x24, 0x0c, /* xchgl 12(%esp),%edx */
> +        0x87, 0x4c, 0x24, 0x10, /* xchgl 16(%esp),%ecx */
> +        0xff, 0x64, 0x24, 0x04, /* jmp *4(%esp) */
It might be a good idea to test for difference of `esp` before and after the call.

-- 
https://gitlab.winehq.org/wine/wine/-/merge_requests/375#note_3465