const builtin = @import("builtin");
const linkage = if (builtin.is_test) builtin.GlobalLinkage.Internal else builtin.GlobalLinkage.Strong;
const is_win32 = builtin.os == builtin.Os.windows and builtin.arch == builtin.Arch.i386;

export nakedcc fn _aullrem() {
    if (is_win32) {
        @setDebugSafety(this, false);
        @setGlobalLinkage(_aullrem, linkage);
        asm volatile (
            \\.intel_syntax noprefix
            \\
            \\         push        ebx
            \\         mov         eax,dword ptr [esp+14h]
            \\         or          eax,eax
            \\         jne         L1a
            \\         mov         ecx,dword ptr [esp+10h]
            \\         mov         eax,dword ptr [esp+0Ch]
            \\         xor         edx,edx
            \\         div         ecx
            \\         mov         eax,dword ptr [esp+8]
            \\         div         ecx
            \\         mov         eax,edx
            \\         xor         edx,edx
            \\         jmp         L2a
            \\ L1a:
            \\         mov         ecx,eax
            \\         mov         ebx,dword ptr [esp+10h]
            \\         mov         edx,dword ptr [esp+0Ch]
            \\         mov         eax,dword ptr [esp+8]
            \\ L3a:
            \\         shr         ecx,1
            \\         rcr         ebx,1
            \\         shr         edx,1
            \\         rcr         eax,1
            \\         or          ecx,ecx
            \\         jne         L3a
            \\         div         ebx
            \\         mov         ecx,eax
            \\         mul         dword ptr [esp+14h]
            \\         xchg        eax,ecx
            \\         mul         dword ptr [esp+10h]
            \\         add         edx,ecx
            \\         jb          L4a
            \\         cmp         edx,dword ptr [esp+0Ch]
            \\         ja          L4a
            \\         jb          L5a
            \\         cmp         eax,dword ptr [esp+8]
            \\         jbe         L5a
            \\ L4a:
            \\         sub         eax,dword ptr [esp+10h]
            \\         sbb         edx,dword ptr [esp+14h]
            \\ L5a:
            \\         sub         eax,dword ptr [esp+8]
            \\         sbb         edx,dword ptr [esp+0Ch]
            \\         neg         edx
            \\         neg         eax
            \\         sbb         edx,0
            \\ L2a:
            \\         pop         ebx
            \\         ret         10h
        );
        unreachable;
    }

    @setGlobalLinkage(_aullrem, builtin.GlobalLinkage.Internal);
    unreachable;
}