...89 1C 24                 mov       [ESP],EBX
000f:   89 C3                    mov       EBX,EAX
0011:   31 C0...

...require an expression before the beginning bracket:

```d
void* pc;
asm {
  mov  pc[EBP],EBX
}
```

--

...eax=0x00000000 ebx=0x00000000 ecx=0x00000000
edx=0x00000000
    0x80000025 0x00: eax=0x00000000 ebx=0x00000000 ecx...

...domain always returns 0 in EAX and EBX.

OTOH I don't see why getCpuInfo0B...

...on a C++ compiler (GCC uses the EBX register right after calling D virtual function...

...regardless of whether it is EAX or EBX) is:

1. CALL: to the next instruction...

...assert(    ret.eax.sizeof * 8 == 32 && ret.ebx.sizeof * 8 == 32
   	               && ret.ecx.sizeof * 8...

https://issues.dlang.org/show_bug.cgi?id=23814

--- Comment #5 from naydef <naydef@abv...

...and you'll see the usage of EBX
register in a function called _THUNK0, which...

...leave
  1e:   c3                      ret


Does not use ebx.

64 bit output:

0000000000000000 <_ZN9MainClass5func4Ev>:
   0:   48...