user32: Call the EnumChildWindows callback using a wrapper.

[Sebastian Lackner]

On 08.12.2015 09:53, Dmitry Timoshkov wrote:
> +extern LRESULT WNDENUMPROC_wrapper( WNDENUMPROC proc, HWND hwnd, LPARAM lparam );
> +__ASM_GLOBAL_FUNC( WNDENUMPROC_wrapper,
> +                   "pushl %ebp\n\t"
> +                   __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
> +                   __ASM_CFI(".cfi_rel_offset %ebp,0\n\t")
> +                   "movl %esp,%ebp\n\t"
> +                   __ASM_CFI(".cfi_def_cfa_register %ebp\n\t")
> +                   "pushl %edi\n\t"
> +                   __ASM_CFI(".cfi_rel_offset %edi,-4\n\t")
> +                   "pushl %esi\n\t"
> +                   __ASM_CFI(".cfi_rel_offset %esi,-8\n\t")
> +                   "pushl %ebx\n\t"
> +                   __ASM_CFI(".cfi_rel_offset %ebx,-12\n\t")
> +                   "pushl 16(%ebp)\n\t"
> +                   "pushl 12(%ebp)\n\t"
> +                   "movl 8(%ebp),%eax\n\t"
> +                   "call *%eax\n\t"

There is no need to safe edi/esi/ebx when the purpose is just to be compatible with cdecl
calling conventions. Also, you should try to keep the stack aligned, like most other
assembler wrappers do. Does it also work with something like:
http://source.winehq.org/git/wine.git/blob/HEAD:/dlls/dinput/dinput_main.c#l357 ?

Regards,
Sebastian