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I am new to AT&T syntax (I used to code for NASM) and can't seem to find the equivalent of Intel's DB (Define Byte)
I am trying to OSDev and need to define:
db 0x55
db 0xAA

old_timer
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    Please refer to the GNU as manual for the directives available. – fuz Jun 05 '21 at 08:07
  • assembly language is specific to the tool not the target. AT&T is a convention and does not cover the details nor differences of the various languages for x86. – old_timer Jun 05 '21 at 18:33
  • @old_timer: In practice there's only one widely-used overall syntax that uses AT&T for instructions, so Unix / GAS directives "go with" AT&T syntax strongly enough that the [att] tag isn't truly wrong for this question. I'm not going to add it back in, but I wouldn't have removed it. I'd expect many novices to search on [att] while looking for a question like this. (I should have removed [bare-metal] when I added [gnu-assembler] though.) Of course there aren't that many GAS directives in the manual, and it's easy to look at gcc output for global `char foo = 123;`. – Peter Cordes Jun 05 '21 at 21:50
  • nothing about the question was related to at&t vs intel. if there had been then it would be a valid tag. – old_timer Jun 05 '21 at 23:58

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Nevermind, it seems it is replaced with .byte

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