nixCraft Linux Forum

nixCraft

Linux / UNIX Tech Support Forum

gcc inline asm question

This is a discussion on gcc inline asm question within the Coding in General forums, part of the Development/Scripting category; hello! 1) stack var (e.g. pBuff) contains pointer to byte array 2) register (e.g. ebx) contains index to this array ...


Go Back   nixCraft Linux Forum > Development/Scripting > Coding in General

Linux answers from nixCraft.


Coding in General Discussion on PHP/Perl/Python/Ruby/GNU C or C++. MySQL, PgSQL and (X)HTML or any other programming languages you want.

Reply

 

LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old 17-04-2009, 02:18 PM
Junior Member
User
 
Join Date: Jun 2008
OS: sparc
Posts: 2
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
vv40in is on a distinguished road
Default gcc inline asm question

hello!
1) stack var (e.g. pBuff) contains pointer to byte array
2) register (e.g. ebx) contains index to this array

i need take as follows:
movzbl <offsetof_pBuff_from_esp>(%esp,%ebx), %eax
i.e. i need access to byte pBuff[ebx]

how do write such asm command on gcc inline asm?
note: it must be single command!

thanks!
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off


Similar Threads

Thread Thread Starter Forum Replies Last Post
question i cant figure out computerguru Ubuntu / Debian 1 27-11-2008 03:57 AM
C question TOP Coding in General 1 08-07-2006 12:14 AM
C question TOP Coding in General 3 10-03-2006 11:08 PM
question TOPHUMAN Shell scripting 1 06-02-2006 01:25 PM
Redirecting question sonaikar Linux software 1 25-06-2005 12:18 AM


All times are GMT +5.5. The time now is 04:27 PM.


Powered by vBulletin® Version 3.8.5 - Copyright ©2000 - 2010, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.3.2
©2005-2010 nixCraft. All rights reserved

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38