Subversion Repositories openrisc

* local labels

* two forms, $[0-9] and label? are allowed

* Local labels are undefined/reset in one of four ways:

* .newblock

* changing sections

* entering an include file

* leaving an include file

        .global addra, addrb, addrc

label1: ld      addra,a

        sub     addrb,a

        bc      $1, alt                 ; generates frag! 

        ld      addrb, a

        b       $2

$1:     ld      addra,a

$2      add     addrc,a

        .newblock

        bc      $1,alt

        stl     a, addrc

$1      nop

* #1, First definition of local label 'lab'

        nop

lab?    add     #1,a                    ; reports as line 17?

        b       lab?

* #2, Included file also defines local label 'lab'

        .copy labels.inc

* #3, Next definition; exit from .copy clears all locals        

lab?    add     #3,a                    ; reports as line 22?

        b       lab?

* #4, Next definition is within macro; supersedes previous definition while

* within the macro

mac     .macro

lab?    add     #4,a                    ; line 31?

        b       lab?

        .endm

* Macro invocation

        mac

* This reference should resolve to definition #3

after_macro:

        b       lab?

* Section change clears all definitions; it's a CODE section if we see insns

        .sect   new_section

        nop

lab?    add     #5,a

        nop

        nop

        b       lab?

* Newblock directive clears local labels

        .newblock

lab?    add     #6,a

        nop

        nop

        b       lab?

        .end