On Friday, 27 May 2016 at 10:00:40 UTC, Era Scarecrow wrote:
On Friday, 27 May 2016 at 09:51:56 UTC, rikki cattermole wrote:
struct Foo {
int x;
void foobar() {
asm {
mov EAX, this;
inc [EAX+Foo.x.offsetof];
}
}
}
You have to reference the field via a register.
This is good progress. Using the assembler doesn't have many
documentation examples of how to do things
Hmmm actually this is incorrect...
void main() {
import std.stdio;
Foo foo = Foo(-1);
writeln(foo.x);
foo.foobar;
writeln(foo.x);
}
-1
-256
It's assuming a byte obviously for the size. So this is the
correct instruction:
inc dword ptr [EAX+Foo.x.offsetof];
However trying it with a long and a qword shows it reverts to a
byte again, meaning 64 bit instructions are inaccessible.
