Menu
Search

Forums

Forum Index

Thread overview
Strange things allowed in iasm
Feb 04, 2018
Basile B.
Feb 04, 2018
Basile B.
Feb 05, 2018
Basile B.
February 04, 2018
Gravatar of Basile B.Posted by Basile B.Reply
Basile B.
Gravatar of Basile B.


Reply
1/

void foo()
{
    asm pure nothrow
    {
        naked;
        mov RAX, [0x10][0x20] R8;
        ret;
    }
}

generates

;------- SUB 0000000000449468h -------
0000000000449468h  mov eax, 00000030h
000000000044946Dh  ret
;-------------------------------------


2/

void foo()
{
    asm pure nothrow
    {
        naked;
        mov RAX, [R9][R10] R8;
        ret;
    }
}

generates

;------- SUB 0000000000449468h -------
0000000000449468h  mov rax, r8
000000000044946Bh  ret
;-------------------------------------


IASM Parser bug ?
February 04, 2018
Gravatar of Basile B.Posted by Basile B.
in reply to Basile B.		Reply
Basile B.
Gravatar of Basile B.
Posted in reply to Basile B.


Reply
On Sunday, 4 February 2018 at 05:45:02 UTC, Basile B. wrote:
> 1/
>
> void foo()
> {
>     asm pure nothrow
>     {
>         naked;
>         mov RAX, [0x10][0x20] R8;
>         ret;
>     }
> }
>
> generates
>
> ;------- SUB 0000000000449468h -------
> 0000000000449468h  mov eax, 00000030h
> 000000000044946Dh  ret
> ;-------------------------------------
>
>
> 2/
>
> void foo()
> {
>     asm pure nothrow
>     {
>         naked;
>         mov RAX, [R9][R10] R8;
>         ret;
>     }
> }
>
> generates
>
> ;------- SUB 0000000000449468h -------
> 0000000000449468h  mov rax, r8
> 000000000044946Bh  ret
> ;-------------------------------------
>
>
> IASM Parser bug ?

This one too

void foo()
{
    asm pure nothrow
    {
        naked;
        mov RAX[R8][R12], [0x10][0x20] DX [0x10][0x20];
        ret;
    }
}
February 05, 2018
Gravatar of Basile B.Posted by Basile B.
in reply to Basile B.		Reply
Basile B.
Gravatar of Basile B.
Posted in reply to Basile B.


Reply
On Sunday, 4 February 2018 at 05:45:02 UTC, Basile B. wrote:
> 1/
>
> void foo()
> {
>     asm pure nothrow
>     {
>         naked;
>         mov RAX, [0x10][0x20] R8;
>         ret;
>     }
> }
>
> generates
>
> ;------- SUB 0000000000449468h -------
> 0000000000449468h  mov eax, 00000030h
> 000000000044946Dh  ret
> ;-------------------------------------
>
>
> 2/
>
> void foo()
> {
>     asm pure nothrow
>     {
>         naked;
>         mov RAX, [R9][R10] R8;
>         ret;
>     }
> }
>
> generates
>
> ;------- SUB 0000000000449468h -------
> 0000000000449468h  mov rax, r8
> 000000000044946Bh  ret
> ;-------------------------------------
>
>
> IASM Parser bug ?

Decided than it is indeed a bug:

https://issues.dlang.org/show_bug.cgi?id=18373

but maybe that the problem happens after parsing.