.altmacro
.macro jump_table name init last
  j \name\()_\init
  .if \last > \init
  jump_table \name, %(\init+1), \last
  .endif
.endm

jump_table jump 0 2

==>

0000000000000000 <jump_0-0x18>:
   0:	00000013          	nop
   4:	00000013          	nop
   8:	00000013          	nop
   c:	00c0006f          	j	18 <jump_0>
  10:	0080006f          	j	18 <jump_0>
  14:	0040006f          	j	18 <jump_0>

0000000000000018 <jump_0>:
  18:	00000013          	nop
  1c:	00000013          	nop