as.info: listing

Configuring listing output: `--listing'

   The listing feature of the assembler can be enabled via the command
line switch `-a' (*note a::).  This feature combines the input source
file(s) with a hex dump of the corresponding locations in the output
object file, and displays them as a listing file.  The format of this
listing can be controlled by pseudo ops inside the assembler source
(*note List:: *note Title:: *note Sbttl:: *note Psize:: *note Eject::)
and also by the following switches:

`--listing-lhs-width=`number''
     Sets the maximum width, in words, of the first line of the hex
     byte dump.  This dump appears on the left hand side of the listing
     output.

`--listing-lhs-width2=`number''
     Sets the maximum width, in words, of any further lines of the hex
     byte dump for a given inut source line.  If this value is not
     specified, it defaults to being the same as the value specified
     for `--listing-lhs-width'.  If neither switch is used the default
     is to one.

`--listing-rhs-width=`number''
     Sets the maximum width, in characters, of the source line that is
     displayed alongside the hex dump.  The default value for this
     parameter is 100.  The source line is displayed on the right hand
     side of the listing output.

`--listing-cont-lines=`number''
     Sets the maximum number of continuation lines of hex dump that
     will be displayed for a given single line of source input.  The
     default value is 4.