[cfe-users] Calling convention FAR PASCAL when using -m16

[Fabian Maurer via cfe-users]

Hello,

I'm currently hacking on a small linker for 16Bit NE executables.

My current main issue is that clang doesn't seem to support the 16Bit calling
convention 'pascal' properly.

Consider the following code sample:
########
static void __pascal test2(short s1, short s2, short s3, short s4)
{
}

test2(1, 2, 3, 4);
########

That compiles to
########
mov    DWORD PTR [esp],0x1
mov    DWORD PTR [esp+0x4],0x2
mov    DWORD PTR [esp+0x8],0x3
mov    DWORD PTR [esp+0xc],0x4
mov    DWORD PTR [esp+0x10],eax
call   120 <test2>
########

AFAIK __pascal should push the arguments in the other order, and not as 4
bytes each. OpenWatcom, that generates real 16Bit code, pushes only 2 byte
each.

Is there away to get fake 16Bit code generated that follows that calling
convention so interfacing with real 16Bit code is possible?

Regards,
Fabian Maurer