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(as.info)Sparc-Directives

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Sparc Machine Directives
------------------------

   The Sparc version of `as' supports the following additional machine
directives:

`.align'
     This must be followed by the desired alignment in bytes.

`.common'
     This must be followed by a symbol name, a positive number, and
     `"bss"'.  This behaves somewhat like `.comm', but the syntax is
     different.

`.half'
     This is functionally identical to `.short'.

`.nword'
     On the Sparc, the `.nword' directive produces native word sized
     value, ie. if assembling with -32 it is equivalent to `.word', if
     assembling with -64 it is equivalent to `.xword'.

`.proc'
     This directive is ignored.  Any text following it on the same line
     is also ignored.

`.register'
     This directive declares use of a global application or system
     register.  It must be followed by a register name %g2, %g3, %g6 or
     %g7, comma and the symbol name for that register.  If symbol name
     is `#scratch', it is a scratch register, if it is `#ignore', it
     just surpresses any errors about using undeclared global register,
     but does not emit any information about it into the object file.
     This can be useful e.g. if you save the register before use and
     restore it after.

`.reserve'
     This must be followed by a symbol name, a positive number, and
     `"bss"'.  This behaves somewhat like `.lcomm', but the syntax is
     different.

`.seg'
     This must be followed by `"text"', `"data"', or `"data1"'.  It
     behaves like `.text', `.data', or `.data 1'.

`.skip'
     This is functionally identical to the `.space' directive.

`.word'
     On the Sparc, the `.word' directive produces 32 bit values,
     instead of the 16 bit values it produces on many other machines.

`.xword'
     On the Sparc V9 processor, the `.xword' directive produces 64 bit
     values.