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        comment "subroutine prologue"
        .macro gdbasm_enter
        alloc r33=ar.pfs,0,2,0,0
        mov r32=b0
        nop.i 0
        .endm

        comment "subroutine epilogue"
        .macro gdbasm_leave
        nop.m 0
        mov ar.pfs=r33
        mov b0=r32
        nop.m 0
        nop.f 0
        br.ret.sptk.many b0
        .endm

        .macro gdbasm_call subr
        nop.m 0
        nop.f 0
        br.call.sptk.many b0=\subr
        .endm

        .macro gdbasm_several_nops
        nop.m 0
        nop.i 0
        nop.i 0
        .endm

        comment "exit (0)"
        .macro gdbasm_exit0
        break.m 0x0
        nop.m 0
        nop.i 0
        .endm

        comment "crt0 startup"
        .macro gdbasm_startup
        gdbasm_enter
        mov r32=r0
        nop.i 0
        nop.i 0
        .endm

        comment "Declare a data variable"
        .purgem gdbasm_datavar
        .macro gdbasm_datavar name value
        .data
\name:
        .long   \value
        .endm