RE: how to use .section command in asm code?
Robert Plantz <[email protected]> Mon, 4 Mar 2013 15:31:35 +0000
| Newsgroups | org.kernel.vger.linux-assembly |
|---|---|
| Message-ID | <6E3CF6FDA48EC747AAAE0EAEDF16EFF802C7E62F@coronet.solar.sonoma.edu> |
Actually, the terminology is "assembler directive", "assembly directive", "pseudo opcode", "pseudo-operation", or "pseudo-op". They direct the assembler to do things as it assembles the source file. For example, as Sofiane points out, ".section .text" tells the assembler to place what follows in the .text segment of the object code. I recommend reading http://en.wikipedia.org/wiki/Assembly_language (I recognize that computer programming language terminology is largely English-centric, and that English is not the native language for (probably) most programmers in the world.) --Bob Plantz ________________________________________ From: [email protected] [[email protected]] on behalf of Sofiane Akermoun [[email protected]] Sent: Sunday, March 03, 2013 10:06 PM To: ishare Cc: [email protected] Subject: Re: how to use .section command in asm code? This is not a command. .section is a keyword related to your assembler syntax, probably gas in your case. A binary should have a section containing the code. with gas we declare it with: .section .text with nasm we declare it with section .text We write below this tag all the executable code. A binary could need data of course we create a section containing all the data with .section .data with gas. Your asm source file should be like this: #some headers here .section .data #initialized data here .section .text global _start _start: #the executable code regards, Sofiane Akermoun 2013/3/3 ishare <[email protected]>: > > can .section command be used in asm code to define a section ? > > is there any examples? > > > thanks! > -- > To unsubscribe from this list: send the line "unsubscribe linux-assembly" in > the body of a message to [email protected] > More majordomo info at http://vger.kernel.org/majordomo-info.html -- Sofiane AKERMOUN [email protected] -- To unsubscribe from this list: send the line "unsubscribe linux-assembly" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html