view run/mini/asm10.d @ 1630:d0efa3ae5522 default tip

run/mini/naked_asm5: New x86_64 ABI passes the arguments in reverse order.
author David Nadlinger <code@klickverbot.at>
date Sat, 23 Apr 2011 22:57:32 +0200
parents c6ef09dfba4d
children
line wrap: on
line source

module asm10;

struct S {
    ushort first;
    ushort second;
    int unaccessed;
}

void main() {
    auto s = S(512, 42, -1);
    ushort x = 0;
    version(D_InlineAsm_X86) {
        asm {
            lea EAX, s;
            mov CX, S.second[EAX];
            mov x, CX;
            mov S.first[EAX], 640;
        }
    } else version(D_InlineAsm_X86_64) {
        asm {
            lea RAX, s;
            mov CX, S.second[RAX];
            mov x, CX;
            mov S.first[RAX], 640;
        }
    }
    assert(x == 42);
    assert(s.first == 640);
    assert(s.second == 42);
    assert(s.unaccessed == -1);
}