Another RIP addressing question

flat assembler
Message board for the users of flat assembler.

Index > Main > Another RIP addressing question

Author

Thread

alorent

Joined: 05 Dec 2005
Posts: 201

alorent

Hello,

I have been reading about RIP addressing mode in x64 and all is clear except in which instructions RIP can be used.

I can make for example:

mov al, [RIP + 34h]

But can I use RIP with other instruction operands like:

mov al, [RIP + RBX + 34h] ???

Thanks,
Alorent

02 May 2006, 11:50

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 18472
Location: In your JS exploiting you and your system

revolution

Quote:

mov al, [RIP + RBX + 34h] ???

X86-64 doesn't support encodings like that. RIP can only be used by itself or with an immediate offset.

02 May 2006, 13:08

alorent

Joined: 05 Dec 2005
Posts: 201

alorent

Thanks revolution! Wink

03 May 2006, 10:47

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 18472
Location: In your JS exploiting you and your system

revolution

Quote:

Thanks revolution!

You are welcome.

03 May 2006, 13:03

< Last Thread | Next Thread >

Forum Rules:

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum