Re: [ros-kernel] NtProtectVirtualMemory() is needed to run MSVC++ apps

[Steven E. <ste...@ya...>]

This rocks dude. If you want me to help with testing/debugging this I will reinstall MS_VC and
compile some simple applications once you figure out more of whats going on. 

Thanks
Steven

> I just found out why application compiled with MSVC++ don't run on ReactOS.
> These apps have a slighly different layout compared to apps compiled with
> MinGW. MSVC++ stores the IAT (Import Address Table) inside of the .rdata
> section, MinGW stores the IAT inside of the .data section. Now the problem
> is that the .rdata setion is read-only. To fix-up the IAT of an application
> the offsets stored in the IAT must be overwritten by the real import
> addresses. Obviously this wont work if the IAT is inside of a read-only
> section.
> 
> To fix this bug I added calls to NtProtectVirtualMemory() to the fixup
> routine to change the IAT's protection to read-write before it is modified
> and reset its protection after the fixup is done.
> 
> When I had a look at NtProtectVirtualMemory() I saw that its core
> functionality is disabled. What's wrong?


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