Commenting syntax for x86 AT&T syntax assembly

assembly comments gnu-assembler att intel-syntax
ihsoy ih picture ihsoy ih · Jul 3, 2013 · Viewed 13.5k times · Source

The Intel syntax has comments using the semicolon. When I switched to AT&T, it actually tried to interpret the comments.

What is the comment syntax for AT&T assembly?

Answer

Zec picture Zec · Jul 3, 2013

Comments for at&t assembler are:

 # this is a comment
 /* this is a comment */

According to the fourth result Google gave me

// and /* */ comments are only supported in .S files because GCC runs the C preprocessor on them before assembling. For .s files, the actual assembler itself (as) only handles # as a comment character, for x86.

For some other ISAs, GAS uses other comment characters, for example @ for ARM.

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