Subversion Repositories openrisc

        comment "subroutine prologue"

        .macro gdbasm_enter

        addiu %29, %29, 0xfffc

        sw %31,0(%29)

        .endm

        comment "subroutine epilogue"

        .macro gdbasm_leave

        lw %31,0(%29)

        addiu %29, %29, 4

        jr %31

        nop

        .endm

        .macro gdbasm_call subr

        jal \subr

        nop

        .endm

        .macro gdbasm_several_nops

        nop

        nop

        nop

        nop

        .endm

        comment "exit (0)"

        .macro gdbasm_exit0

        ori  %4, %0, 1  # SYS_exit

        ori  %5, %0, 0  # normal exit code

        ori  %6, %0, 0

        ori  %7, %0, 0

        syscall

        .endm

        comment "crt0 startup"

        .macro gdbasm_startup

        andi %0, %0, 0

        addiu %29, %0, 0xffc

        .endm