Subversion Repositories openrisc_me

        comment "subroutine prologue"
        .macro gdbasm_enter
        mov.w   r6,@-r7
        mov.w   r7,r6
        subs    #2,r7
        .endm

        comment "subroutine epilogue"
        .macro gdbasm_leave
        adds    #2,r7
        mov.w   @r7+,r6
        rts
        .endm

        .macro gdbasm_call subr
        jsr @\subr
        .endm

        .macro gdbasm_several_nops
        nop
        nop
        nop
        nop
        .endm

        comment "exit (0)"
        .macro gdbasm_exit0
        mov.w #0xdead,r1
        mov.w #0xbeef,r2
        mov.w #0,r0
        sleep
        .endm

        comment "crt0 startup"
        .macro gdbasm_startup
        .section .stack
_stack: .long 1
        .section .text
        .global _start
_start:
        mov.w   #0,r6
        mov.w   #_stack,sp      ; or mov.l #_stack,sp
        mov.w   #_edata,r0
        mov.w   #_end,r1
        sub.w   r2,r2
.loop:  mov.w   r2,@r0
        adds    #2,r0
        cmp     r1,r0
        blo     .loop
        .endm